Desizing wastewater recycling treatment method

Abstract

The application discloses a desizing wastewater recycling treatment method, S1, providing a desizing wastewater recycling treatment system; S2, mixing the wastewater and the acidic liquid poured into the wastewater treatment tank; S3, the centrifuge carries out centrifugal dewatering on the sludge, and the sludge is transported to a crushing and drying device; S4, the crushing and drying device carries out crushing and drying on the sludge, and then the sludge is weighed; S5, other wastewater is introduced into the adjusting tank and mixed into the primary sedimentation tank; S6, after the wastewater in the primary sedimentation tank is precipitated, the sludge is discharged into the sludge tank, and the wastewater is introduced into the biochemical tank; S7, the wastewater in the biochemical tank is reacted again, and then is introduced into the secondary sedimentation tank to be precipitated; S8, the Fenton reactor is further reacted, is introduced into the tertiary sedimentation tank to be precipitated, the sludge is discharged into the sludge tank, and the wastewater is discharged to the outside; S9, the sludge is transported to the sludge adjusting tank to add lime, the separated filtrate is returned to the pipe return device and the primary sedimentation tank, and the filter residue is discharged; the method can effectively treat the desizing wastewater and meet the discharge requirements.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of desizing wastewater, and particularly relates to a desizing wastewater recycling treatment method. BACKGROUND

[0002] Desizing wastewater is wastewater containing fibers, precipitates, suspended solids and chemical substances generated in the production process of pulp;

[0003] Desizing is to hydrolyze the pulp carried on the fabric by using chemical agents to form soluble substances, and then remove the soluble substances; therefore, solid-liquid separation of the wastewater is needed by using acid precipitation method. In the wastewater desizing wastewater treatment, acid precipitation is mainly to change the acidity and alkalinity of the water body, so that some specific substances are converted from dissolved or colloidal state to suspended state under this condition, and then the suspended substances are precipitated to form sludge. After being discharged, the sludge is subjected to dewatering treatment, and after the dewatering treatment is completed, the sludge is subjected to final crushing and drying treatment to completely dry the moisture of the sludge and weigh the sludge. In this way, the precise metering function can be realized when discharging, and the needs of discharge treatment operation management can be met. At present, the dewatering and weighing of the sludge in the operation process cannot realize automatic and continuous work, and manual transfer and conveying of the sludge after each step is completed are needed, which is very wasteful in manpower and material resources and low in efficiency. In addition, the wastewater after the acid precipitation method is completed still contains a large amount of active sludge and other impurities which are difficult to treat, and the COD content is high, so that the quality of the discharged wastewater cannot be improved, and the wastewater needs to be further treated. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a desizing wastewater recycling treatment method, which can continuously and effectively treat the desizing wastewater and make the treatment of the desizing wastewater meet the discharge requirements.

[0005] To solve the above technical problems, the technical scheme of the present application is as follows: a desizing wastewater recycling treatment method, comprising the following steps:

[0006] S1. A desizing wastewater recycling and treatment system is provided, comprising a sludge recycling and treatment device and a supernatant treatment device. The sludge recycling and treatment device includes a wastewater treatment tank, a dewatering device, a crushing and drying device, and a weighing device. The dewatering device includes a centrifuge, which is equipped with a return pipe connected to the wastewater treatment tank. The wastewater treatment tank is equipped with a drain pipe leading into the centrifuge, and the drain pipe is equipped with a corresponding power assist device. The centrifuge is equipped with a discharge port, and a continuous conveying system is provided between the centrifuge and the crushing and drying device. The sludge conveying device corresponds to the discharge port, and the weighing device is connected below the crushing and drying device; the supernatant treatment device includes an equalization tank, a pipeline mixer, a primary sedimentation tank, a biological treatment tank, a secondary sedimentation tank, a tertiary sedimentation tank, a sludge tank, a Fenton reactor, a sludge equalization tank, and a filter press; the wastewater treatment tank is equipped with a supernatant connecting pipe leading into the equalization tank, and the equalization tank is connected to multiple inlet pipes, each inlet pipe being equipped with a flow regulating valve; the outlet of the equalization tank is connected to the inlet of the pipeline mixer; The inlet of the primary sedimentation tank is connected to the outlet of the pipe mixer; the outlet of the primary sedimentation tank is connected to the inlet of the biological treatment tank; the outlet of the biological treatment tank is connected to the inlet of the secondary sedimentation tank; the outlet of the secondary sedimentation tank is connected to the raw water addition pipe of the Fenton reactor; the outlet pipe of the Fenton reactor is connected to the inlet of the tertiary sedimentation tank; and the outlet of the tertiary sedimentation tank is connected to the outside. The primary, secondary, and tertiary sedimentation tanks are respectively equipped with a first sludge discharge pipe, a second sludge discharge pipe, and a third sludge discharge pipe connected to the sludge tank. The bottom of the secondary sedimentation tank is connected to the primary sedimentation tank. A first sludge return pipeline is installed between the bottom of the secondary sedimentation tank and the biological treatment tank; a second sludge return pipeline for returning activated sludge is also installed between the bottom of the tertiary sedimentation tank and the primary sedimentation tank; a third sludge return pipeline is installed between the bottom of the tertiary sedimentation tank and the primary sedimentation tank; a conveying pump is installed on the first sludge discharge pipeline, the second sludge discharge pipeline, the third sludge discharge pipeline, the first sludge return pipeline, the second sludge return pipeline, and the third sludge return pipeline; the sludge tank is connected to the sludge equalization tank, the sludge equalization tank is connected to the filter press, and the filtrate produced by the filter press is connected to the dosing port of the pipeline mixer and the inlet of the primary sedimentation tank, respectively;

[0007] S2. Pour wastewater and acidic liquid into the wastewater treatment tank and mix them. The sludge enters the centrifuge from the sewage pipe, and the supernatant enters the equalization tank from the supernatant connection pipe.

[0008] S3. The centrifuge dewaters the sludge, and the liquid separated from the sludge returns to the wastewater treatment tank through the return pipe. The sludge falls from the discharge port into the sludge conveying device and is conveyed to the crushing and drying device.

[0009] S4. The crushing and drying device crushes and dries the sludge, and then weighs it using a weighing device.

[0010] S5, other wastewater is introduced into the adjusting tank through other water inlet pipes, and then the wastewater in the adjusting tank is mixed into the primary sedimentation tank through a pipeline mixer;

[0011] S6, after the wastewater in the primary sedimentation tank is settled, the sludge is discharged into the sludge tank through the first sludge discharge pipeline, and the wastewater is discharged from the primary sedimentation tank into the biochemical tank;

[0012] S7, the wastewater in the biochemical tank is reacted again, and then is settled in the secondary sedimentation tank, the sludge in the secondary sedimentation tank is discharged into the sludge tank through the second sludge discharge pipeline, and the wastewater is discharged from the secondary sedimentation tank into the Fenton reactor;

[0013] S8, the Fenton reactor further reacts the wastewater, after the reaction is completed, the wastewater is settled in the tertiary sedimentation tank, the sludge is discharged into the sludge tank through the third sludge discharge pipeline, and the wastewater in the tertiary sedimentation tank is discharged to the outside;

[0014] S9, the sludge in the sludge tank is transported to the sludge adjusting tank, lime is added into the sludge tank, and finally the sludge is pressure filtered through a pressure filter to separate filtrate and filter residue, the filtrate is returned to the pipeline homogenizer and the primary sedimentation tank, and the filter residue is discharged.

[0015] As a preferred scheme, in step S2, a plurality of airflow pipes are uniformly arranged at the bottom of the wastewater treatment tank, a plurality of aeration discs are arranged on the airflow pipes, the airflow pipes are connected to a total gas pipe, the total gas pipe is connected to an external air inlet pipe, an airflow control box for adjusting the airflow in the air inlet pipe is arranged on the air inlet pipe, a rotating rod is rotatably connected to one side of the airflow control box, the rotating angle of the rotating rod corresponds to the airflow size of the air inlet pipe, a rotating adjusting structure for adjusting the rotating angle of the rotating rod is arranged on the rotating rod, the rotating angle of the rotating rod rotates with the change of the liquid level of the wastewater treatment tank, and a drain port for facilitating water drainage is arranged on the wastewater treatment tank; the treatment process of the wastewater in the wastewater treatment tank comprises the following steps:

[0016] S21, the rotating adjusting structure adjusts the rotating of the rotating rod to control the airflow size passing through the airflow control box;

[0017] S22, the external air inlet pipe transports the airflow into the total gas pipe and disperses the airflow to each airflow pipe, and the airflow is aerated through the aeration discs to complete the disturbance of the wastewater.

[0018] As a preferred scheme, the rotating adjusting structure comprises a pulley fixed at the top end of one side of the wastewater treatment tank, an adjusting floating ball is arranged in the wastewater treatment tank, the adjusting floating ball and the end of the rotating rod are connected through a traction rope, and the traction rope passes through the pulley; the adjusting floating ball can float in the wastewater treatment tank, when the adjusting floating ball descends, the rotating rod swings upward, and the airflow passing through the airflow control box becomes smaller; when the adjusting floating ball rises, the rotating rod swings downward, and the airflow passing through the airflow control box becomes larger.

[0019] As a preferred scheme, in step S3, the sludge conveying device comprises a sludge conveying belt and a screw conveyor, the sludge conveying belt and the screw conveyor successively link to convey the sludge, and the screw conveyor is provided with stirring blades to stir the sludge while conveying the sludge.

[0020] As a preferred scheme, in step S5, the crushing and drying device comprises a crushing box body, a turnover valve is flange-connected to a discharging port of the crushing box body, and a bag clamping structure is flange-connected to the turnover valve; when the sludge is crushed and dried in the crushing box body, the turnover valve controls the discharging time of the sludge after crushing and drying, and the bag clamping structure makes the bag receive the sludge.

[0021] As a preferred scheme, in step S8, the Fenton reactor comprises a reaction tank and a base, the reaction tank is fixedly installed on the base, a water outlet pipe is arranged at a top end of the reaction tank, a vent pipe is arranged at a bottom of the reaction tank, valves are arranged on the water outlet pipe and the vent pipe, a hydrogen peroxide adding pipeline, a divalent iron ion solution pipeline and a raw water adding pipeline are fixedly installed in the reaction tank, an up-and-down liquid lifting pipe is suspendedly installed in the reaction tank, the liquid lifting pipe is perforated at a top and a bottom, the height of the top is lower than that of the water outlet pipe, an air pipe is communicated with the liquid lifting pipe to inject air into the liquid lifting pipe, and the air pipe is perforated through the reaction tank and communicated with the outside; raw water is added into the reaction tank through the raw water adding pipeline, and the hydrogen peroxide adding pipeline and the divalent iron ion solution pipeline also add corresponding hydrogen peroxide and divalent iron ion solution, and the hydrogen peroxide and the divalent iron ion solution start to react after contacting each other, the water level starts to rise and covers the liquid lifting pipe, the air pipe blows air into the liquid lifting pipe, bubbles are formed in the liquid lifting pipe and move upward, the water flow is discharged from the top of the liquid lifting pipe, the liquid is introduced from the bottom of the liquid lifting pipe, and the liquid in the reaction tank is continuously circulated, and the water level rises to the water outlet pipe, and the water outlet pipe is opened to discharge.

[0022] After the above technical scheme is adopted, the effect of the present application is that the desizing wastewater recycling treatment method comprises the following steps:

[0023] S1. Provide a desizing wastewater recycling system, comprising a sludge recycling device and a supernatant treatment device, the sludge recycling device comprises a wastewater treatment tank, a dewatering device, a crushing and drying device and a weighing device, the dewatering device comprises a centrifuge, a liquid return pipe is arranged on the centrifuge and communicates with the wastewater treatment tank, a sewage discharge pipe is arranged on the wastewater treatment tank and extends into the centrifuge, a corresponding power assisting device is arranged on the sewage discharge pipe, a material dropping port is arranged on the centrifuge, a continuous sludge conveying device is arranged between the centrifuge and the crushing and drying device, the sludge conveying device corresponds to the material dropping port, and the crushing and drying device is connected with the weighing device below; the supernatant treatment device comprises an adjusting tank, a pipeline mixer, an initial sedimentation tank, a biochemical tank, a secondary sedimentation tank, a tertiary sedimentation tank, a sludge tank, a Fenton reactor, a sludge adjusting tank and a filter press; a supernatant connecting pipe is arranged on the wastewater treatment tank and extends into the adjusting tank, a plurality of water inlet pipes are connected to the adjusting tank, and a flow regulating valve is arranged on each water inlet pipe; the outlet of the adjusting tank communicates with the water inlet of the pipeline mixer; the inlet of the initial sedimentation tank communicates with the water outlet of the pipeline mixer, the outlet of the initial sedimentation tank communicates with the inlet of the biochemical tank, the outlet of the biochemical tank communicates with the inlet of the secondary sedimentation tank, the outlet of the secondary sedimentation tank communicates with the raw water adding pipe of the Fenton reactor, the water outlet pipe of the Fenton reactor communicates with the inlet of the tertiary sedimentation tank, and the outlet of the tertiary sedimentation tank communicates with the outside; the initial sedimentation tank, the secondary sedimentation tank and the tertiary sedimentation tank are respectively provided with a first sludge discharge pipeline, a second sludge discharge pipeline and a third sludge discharge pipeline which communicate with the sludge tank, a first sludge return pipeline is arranged between the bottom of the secondary sedimentation tank and the initial sedimentation tank, a second sludge return pipeline for returning activated sludge is further arranged between the bottom of the secondary sedimentation tank and the biochemical tank, and a third sludge return pipeline is arranged between the bottom of the tertiary sedimentation tank and the initial sedimentation tank; a conveying pump is arranged on each of the first sludge discharge pipeline, the second sludge discharge pipeline, the third sludge discharge pipeline, the first sludge return pipeline, the second sludge return pipeline and the third sludge return pipeline; the sludge tank communicates with the sludge adjusting tank, the sludge adjusting tank communicates with the filter press, and the filtrate generated by the filter press respectively communicates with the dosing port of the pipeline mixer and the inlet of the initial sedimentation tank.

[0024] S2. The wastewater in the wastewater treatment tank is mixed with the acid liquid, the sludge enters the centrifuge from the sewage discharge pipe, and the supernatant enters the adjusting tank from the supernatant connecting pipe.

[0025] S3. The centrifuge centrifugally dewatering the sludge, the liquid separated from the sludge returns to the wastewater treatment tank through the liquid return pipe, and the sludge falls on the sludge conveying device from the material dropping port and is conveyed to the crushing and drying device.

[0026] S4. The crushing and drying device crushes and dries the sludge, and then the sludge is weighed by the weighing device.

[0027] S5, the other wastewater is introduced into the adjusting tank through the other water inlet pipe, and then the wastewater in the adjusting tank is mixed into the primary sedimentation tank through the pipeline mixer;

[0028] S6, the wastewater in the primary sedimentation tank is subjected to sedimentation, the sludge is discharged into the sludge tank through the first sludge discharge pipeline, and the wastewater is discharged from the primary sedimentation tank into the biochemical tank;

[0029] S7, the wastewater in the biochemical tank is subjected to reaction again, and then is subjected to sedimentation in the secondary sedimentation tank, the sludge in the secondary sedimentation tank is discharged into the sludge tank through the second sludge discharge pipeline, and the wastewater is discharged from the secondary sedimentation tank into the Fenton reactor;

[0030] S8, the Fenton reactor further reacts with the wastewater, and after the reaction is completed, the wastewater is subjected to sedimentation in the tertiary sedimentation tank, the sludge is discharged into the sludge tank through the third sludge discharge pipeline, and the wastewater in the tertiary sedimentation tank is discharged to the outside;

[0031] S9, the sludge in the sludge tank is transported to the sludge adjusting tank, lime is added into the sludge tank, and finally the sludge is subjected to pressure filtration through the filter press to separate the filtrate and the filter residue, the filtrate is returned to the pipeline homogenizer and the primary sedimentation tank, and the filter residue is discharged; after the wastewater is treated in the wastewater treatment tank, it is separated into sludge and supernatant, so that the sludge and the supernatant can be effectively treated, for the sludge, centrifugal dewatering is performed first to minimize the water content in the sludge, and the liquid centrifuged from the sludge is returned to the wastewater treatment tank for reuse, then the sludge is transported to the crushing and drying device for drying to ensure that the water in the sludge is evaporated, and then the sludge is weighed to ensure accurate metering when discharging, and the supernatant is transported to the adjusting tank through the supernatant connecting pipe, and the wastewater in the adjusting tank is subjected to sedimentation and decomposition treatment through the pipeline mixer, the primary sedimentation tank, the biochemical tank, the secondary sedimentation tank, the Fenton reactor, and the tertiary sedimentation tank, so as to meet the discharge requirements, the Fenton reactor can further improve the treatment effect of the wastewater, and the sludge in the secondary sedimentation tank and the tertiary sedimentation tank does not meet the required treatment effect, the sludge can be transported back to the primary sedimentation tank and the biochemical tank in sequence through the first sludge return pipeline, the second sludge return pipeline and the third sludge return pipeline for reaction and sedimentation to ensure that the wastewater treatment is qualified; the method can continuously and effectively treat the desizing wastewater, so that the desizing wastewater treatment meets the discharge requirements.

[0032] And because in step S2, the wastewater treatment tank bottom evenly arranged with several air flow duct, the air flow duct is equipped with several aeration disc, the air flow duct to the total gas pipe, the total gas pipe with external air pipe communication, the air pipe is equipped with the air flow control box that adjusts the air flow size in the air pipe, the air flow control box side rotationally connected with the rotating rod, rotating rod rotation angle and the air flow size in the air pipe correspond, the rotating rod is equipped with the rotation adjustment structure that adjusts the rotating rod angle, the rotating angle of the rotating rod and the change of wastewater treatment tank liquid level and rotate, the wastewater treatment tank is equipped with the water drain hole that facilitates drainage;Wastewater treatment process in the wastewater treatment tank includes the following steps:

[0033] S21, the rotating adjustment structure adjusts the rotating rod, controls the air flow size that passes in the air flow control box;

[0034] S22, external air pipe conveying air flow into the total gas pipe disperses to each air flow duct, through the aeration disc aeration completes the disturbance to the wastewater;This can change the size of aeration with the change of pool liquid surface, improve the use effect in the wastewater treatment tank.

[0035] And because the rotating adjustment structure includes the pulley fixed at the top of one side of the wastewater treatment tank, the wastewater treatment tank is equipped with the adjusting float ball, the adjusting float ball and the end of the rotating rod are connected through the traction rope, the traction rope passes through the pulley;Adjusting float ball can float in the wastewater treatment tank, when the adjusting float ball descends, the rotating rod swings upward, the air flow that passes in the air flow control box becomes smaller;When the adjusting float ball rises, the rotating rod swings downward, the air flow that passes in the air flow control box becomes larger;Traction ball can rise and fall with the rise and fall of the liquid surface, which can drive the rotating rod to swing, thereby adjusting the air flow size that passes through the air flow control box, simple and convenient operation.

[0036] And because in step S3, the sludge conveying device includes a sludge conveyor belt and a screw conveyor, the sludge conveyor belt and the screw conveyor are connected in sequence to convey the sludge, the screw conveyor is equipped with stirring blades, which can stir the sludge while conveying the sludge.

[0037] And because in step S5, the crushing and drying device includes a crushing box, the flange of the discharge port of the crushing box is connected with a turnover valve, and the flange below the turnover valve is connected with a bag clamping structure;When the sludge is crushed and dried in the crushing box, the turnover valve controls the discharge time of the crushed and dried sludge, and the bag clamping structure makes the bag receive the sludge;Through the turnover valve, the sludge can be discharged in time after drying, and the bag below can be used to receive the sludge, ensuring the accuracy of the discharge and facilitating the subsequent weighing.

[0038] And since in step S8, the Fenton reactor comprises a reaction tank and a base, the reaction tank is fixedly installed on the base, a water outlet pipe is arranged at the top of the reaction tank, a vent pipe is arranged at the bottom of the reaction tank, valves are arranged on the water outlet pipe and the vent pipe, a hydrogen peroxide adding pipeline, a divalent iron ion solution pipeline and a raw water adding pipeline are fixedly installed in the reaction tank, an up-and-down penetrating liquid lifting pipe is also suspendedly installed in the reaction tank, the height of the outlet of the liquid lifting pipe is lower than the height of the water outlet pipe, an air pipe for injecting air into the liquid lifting pipe is communicated in the liquid lifting pipe, and the air pipe penetrates the reaction tank and is communicated with the outside; the wastewater enters the reaction tank through the raw water adding pipeline, and the hydrogen peroxide adding pipeline and the divalent iron ion solution pipeline also add corresponding hydrogen peroxide and divalent iron ion solution, and after mutual contact, the reaction starts, when the water level starts to rise and covers the liquid lifting pipe, the air pipe blows air into the liquid lifting pipe, the bubbles in the liquid lifting pipe move upwards, the water flow is brought out from the upper end outlet of the liquid lifting pipe, the liquid is brought into from the lower end outlet of the liquid lifting pipe, the liquid in the reaction tank is continuously circulated, and when the water level rises to the water outlet pipe, the water outlet pipe is opened to discharge; after the wastewater reacted in the secondary sedimentation tank is deposited, the wastewater can be more effectively treated in the Fenton reactor, so that the organic matter in the wastewater can be effectively decomposed, and the treatment effect is better. BRIEF DESCRIPTION OF DRAWINGS

[0039] The application will be further described below in combination with the drawings and examples.

[0040] Figure 1 is a structural schematic view of the embodiment of the application;

[0041] Figure 2 is a semi-sectional view of the wastewater treatment tank of the embodiment of the application;

[0042] Figure 3 is a sectional view of the outer box body of the embodiment of the application;

[0043] Figure 4 is a sectional view of the centrifugal machine and the sludge conveying belt of the embodiment of the application;

[0044] Figure 5 is a structural schematic view of the screw conveyor and the crushing and drying device of the embodiment of the application

[0045] Figure 6 is a sectional view of the crushing and drying device of the embodiment of the application;

[0046] Figure 7 is a structural schematic view of the inside of the conveying pipe of the screw conveyor of the embodiment of the application;

[0047] Figure 8 is a top view of the Fenton reactor of the embodiment of the application;

[0048] Figure 9 is Figure 8A-A is a sectional view;

[0049] In the drawings: 11, wastewater treatment tank; 12, air flow pipeline; 13, aeration disc; 14, total air pipe; 15, air flow control box; 16, rotating rod; 17, drainage outlet; 18, rotating ball; 19, outer box; 110, air flow channel; 111, through channel; 112, connecting shaft; 113, pulley; 114, adjusting floating ball; 115, traction rope; 116, torsion spring; 117, upper limit block; 118, lower limit block; 119, sealing ring; 120, rotating bearing; 121, air inlet pipeline; 122, supernatant connecting pipe;

[0050] 21, centrifuge; 22, liquid return pipe; 23, sewage pipe; 24, material falling port; 25, crushing box; 26, crushing installation platform; 27, rotating shaft; 28, crushing blade; 29, stabilizing support; 210, crushing inlet; 211, exhaust port; 212, discharging port; 213, crushing rotating motor; 214, stabilizing bearing; 215, reversing valve; 216, conveyor frame; 217, sludge conveyor belt; 218, driving pulley; 219, driven pulley; 220, auxiliary pulley; 221, material blocking block; 222, material falling hopper; 223, hopper support; 224, conveying pipe; 225, discharging pipe; 226, spiral shaft; 227, stirring blade; 228, spiral driving motor; 229, bag clamping pipe; 230, bag clamping claw; 231, opening and closing cylinder; 232, weighing hopper; 233, weighing support; 234, sliding block; 235, sliding guide rail; 236, weighing station; 237, loading and unloading station; 238, electric heating ring; 239, limiting rod; 240, blade;

[0051] 31, reaction tank; 32, base; 33, water outlet pipe; 34, vent pipe; 35, valve; 36, hydrogen peroxide adding pipeline; 37, raw water adding pipeline; 38, liquid lifting pipe; 39, air pipe; 310, fixing plate; 311, air leakage hole; 312, pipe section air flow baffle; 313, supporting rod; 314, top end air flow baffle; 315, shaft sleeve; 316, connecting rod; 317, hollow channel; 318, ferrous ion solution pipeline;

[0052] 41, adjusting tank; 42, pipeline mixer; 43, primary sedimentation tank; 44, biochemical tank; 45, secondary sedimentation tank; 46, tertiary sedimentation tank; 47, sludge tank; 48, filter press; 49, sludge adjusting tank; 410, first sludge discharge pipeline; 411, second sludge discharge pipeline; 412, third sludge discharge pipeline; 413, first sludge return pipeline; 414, second sludge return pipeline; 415, third sludge return pipeline. DETAILED DESCRIPTION

[0053] The application will be further described in detail below through specific examples.

[0054] As Figures 1 to 9 shown, the application discloses a desizing wastewater recycling treatment method, which comprises the following steps:

[0055] S1, provide a desizing wastewater recycling treatment system, including sludge recycling treatment device and supernatant treatment device, the sludge recycling treatment device includes wastewater treatment pool 1, dewatering device, crushing drying device and weighing device, the dewatering device includes centrifuge 21, the centrifuge 21 is equipped with the liquid return pipe 22 that communicates with wastewater treatment pool 1, the wastewater treatment pool 1 is equipped with the blowdown pipe 23 that enters into centrifuge 21, the blowdown pipe 23 is equipped with corresponding power-assisted power device, the centrifuge 21 is equipped with the blanking port 24, the centrifuge 21 and crushing drying device between are equipped with the sludge conveying device of continuous conveying, the sludge conveying device and blanking port 24 correspond, the crushing drying device below is connected with the weighing device;The supernatant treatment device includes adjusting pool 41, pipeline mixer 42, primary sedimentation tank 43, biochemical pool 44, secondary sedimentation tank 45, three sedimentation tank 46, sludge pool 47, fenton reactor, sludge conditioning tank 49 and filter press 48;The wastewater treatment pool 1 is equipped with the supernatant connecting pipe 122 that enters into adjusting pool 41, the adjusting pool 41 is connected with multiple water inlet pipes, each water inlet pipe is provided with flow regulating valve;The outlet of adjusting pool 41 is communicated with the water inlet of pipeline mixer 42;The inlet of primary sedimentation tank 43 is communicated with the water outlet of pipeline mixer 42, the outlet of primary sedimentation tank 43 is communicated with the inlet of biochemical pool 44, the outlet of biochemical pool 44 is communicated with the inlet of secondary sedimentation tank 45, the outlet of secondary sedimentation tank 45 is communicated with the raw water adding pipe of fenton reactor, the water outlet pipe of fenton reactor is communicated with the inlet of three sedimentation tank 46, the outlet of three sedimentation tank 46 is communicated with the outside;The primary sedimentation tank 43, secondary sedimentation tank 45, three sedimentation tank 46 are provided with the first sludge discharge pipeline 410, second sludge discharge pipeline 411, third sludge discharge pipeline 412 that are communicated with sludge pool 47 respectively, the bottom of secondary sedimentation tank 45 and primary sedimentation tank 43 are provided with the first sludge return pipeline 413;The bottom of secondary sedimentation tank 45 and biochemical pool 44 are also provided with the second sludge return pipeline 414 that returns activated sludge, the bottom of three sedimentation tank 46 and primary sedimentation tank 43 are provided with the third sludge return pipeline 415;The first sludge discharge pipeline 410, second sludge discharge pipeline 411, third sludge discharge pipeline 412, first sludge return pipeline 413, second sludge return pipeline 414, third sludge return pipeline 415 are all provided with conveying pump;The sludge pool 47 is communicated with sludge conditioning tank 49, the sludge conditioning tank 49 is communicated with filter press 48, the filtrate generated by filter press 48 is communicated with the dosing port of pipeline mixer 42 and the inlet of primary sedimentation tank 43 respectively;

[0056] S2, the wastewater treatment tank 1 pouring into the wastewater and acid liquid mixing, sludge from the drain pipe 23 into the centrifuge 21, supernatant from the supernatant connecting pipe 122 into the conditioning tank 41;

[0057] S3, centrifuge 21 sludge centrifugal dewatering, sludge separated out by the liquid back to the wastewater treatment tank 1 through the back liquid pipe 22, sludge from the material drop 24 fall in the sludge conveying device to the broken drying device conveying;

[0058] S4, broken drying device sludge crushing drying, and then through the weighing device weighing;

[0059] S5, the conditioning tank 41 through other water pipe into other wastewater, then through the pipeline mixer 42 mixed wastewater in the conditioning tank 41 into the primary sedimentation tank 43;

[0060] S6, the wastewater in the primary sedimentation tank 43 after sedimentation, sludge through the first sludge pipe 410 into the sludge tank 47, wastewater from the primary sedimentation tank 43 into the biochemical tank 44;

[0061] S7, the wastewater in the biochemical tank 44 again for reaction, then into the secondary sedimentation tank 45 for sedimentation, sludge in the secondary sedimentation tank 45 through the second sludge pipe 411 into the sludge tank 47, wastewater from the secondary sedimentation tank 45 into the Fenton reactor;

[0062] S8, Fenton reactor for wastewater further reaction, reaction after wastewater into the three sedimentation tank 46 for sedimentation, sludge through the third sludge pipe into the sludge tank 47, wastewater in the three sedimentation tank 46 to the outside;

[0063] S9, the sludge in the sludge tank 47 is transported to the sludge conditioning tank 49, lime is added to the sludge tank 47, and finally the sludge is filtered by the filter press 48 to separate the filtrate and the filter residue, the filtrate is returned to the pipe return device and the primary sedimentation tank 43, and the filter residue is discharged; the method separates the sludge and supernatant separated in the waste treatment tank for separate treatment, the sludge is dewatered by the centrifugal machine 21 to reduce the water content in the sludge to the maximum extent, and the liquid centrifuged out of the sludge is returned to the waste water treatment tank 1 for reuse, then the sludge is transported to the crushing and drying device for drying to ensure that the water in the sludge is evaporated, and then the sludge is weighed to ensure accurate metering when discharging, and the supernatant is transported to the conditioning tank 41 through the supernatant connecting pipe 122, and the waste water in the conditioning tank 41 is subjected to sedimentation and decomposition treatment through the pipe mixer 42, the primary sedimentation tank 43, the biochemical tank 44, the secondary sedimentation tank 45, the Fenton reactor, and the third sedimentation tank 46, so as to meet the discharge requirements, the Fenton reactor can further improve the treatment effect of the waste water, and the sludge in the secondary sedimentation tank 45 and the third sedimentation tank 46 does not meet the required treatment effect, so the sludge can be transported back to the primary sedimentation tank 43 and the biochemical tank 44 in sequence through the first sludge return pipeline 413, the second sludge return pipeline 414 and the third sludge return pipeline 415 for reaction and sedimentation to ensure that the waste water treatment is qualified.

[0064] Preferably, in step S2, a plurality of air flow pipes 12 are uniformly arranged at the bottom of the waste water treatment tank 1, a plurality of aeration discs 13 are arranged on the air flow pipes 12, the air flow pipes 12 converge at a total air pipe 14, the total air pipe 14 is in communication with an external air inlet pipe 121, an air flow control box 15 for adjusting the air flow in the air inlet pipe 121 is arranged on the air inlet pipe 121, a rotating rod 16 is rotatably connected to one side of the air flow control box 15, the rotating angle of the rotating rod 16 corresponds to the air flow size of the air inlet pipe, a rotating adjusting structure for adjusting the angle of the rotating rod 16 is arranged on the rotating rod 16, the rotating angle of the rotating rod 16 rotates with the change of the liquid level of the waste water treatment tank 1, and a drain port 17 for facilitating water drainage is arranged on the waste water treatment tank 1; the treatment process of the waste water in the waste water treatment tank 1 includes the following steps:

[0065] S21, the rotating adjusting structure adjusts and rotates the rotating rod 16 to control the air flow size passing through the air flow control box 15;

[0066] S22, the external air inlet pipe 121 transports air flow into the total air pipe 14 and disperses to each air flow pipe 12, and the air flow is aerated by the aeration disc 13 to complete the disturbance of the waste water; in this way, the air flow size required for aeration is different when waste water at different liquid levels is mixed, so the size of the air flow passing through the air flow control box 15 is changed by rotating the rotating rod 16 to ensure that the air flow corresponds to the liquid level of the waste water tank, so that the use effect of the waste water treatment tank 1 is improved.

[0067] Preferably, the rotation adjusting structure comprises a pulley fixed at the top end of one side of the wastewater treatment tank 1, and an adjusting floating ball is arranged in the wastewater treatment tank 1, the adjusting floating ball and the end of the rotating rod 16 are connected through a traction rope, and the traction rope passes through the pulley; the adjusting floating ball can float in the wastewater treatment tank 1, when the adjusting floating ball descends, the rotating rod 16 is pulled to swing upward, and the passing airflow in the airflow control box 15 becomes small; when the adjusting floating ball rises, the rotating rod 16 swings downward, and the passing airflow in the airflow control box 15 becomes large; since the floating ball can rise and fall with the floating of the liquid surface in the wastewater treatment tank 1, the rotating rod 16 can be driven to deflect through the traction rope, so that the size of the passing airflow of the airflow control box 15 is controlled in time, and the adjustment is ensured to be accurate and timely.

[0068] Preferably, in step S3, the sludge conveying device comprises a sludge conveying belt 217 and a screw conveyor, the sludge conveying belt and the screw conveyor are sequentially connected to convey the sludge, and the screw conveyor is provided with stirring blades 227 to stir the sludge while conveying the sludge; the sludge is preliminarily stirred during conveying, so that the flocculation in the sludge is prevented from being agglomerated, and the sludge is effectively dispersed.

[0069] Preferably, in step S5, the crushing and drying device comprises a crushing box 25, a turnover valve 215 is flange-connected to the discharge port of the crushing box 25, and a bag clamping structure is flange-connected below the turnover valve 215; when the sludge is crushed and dried in the crushing box 25, the turnover valve 215 controls the discharging time of the sludge after crushing and drying, and the bag clamping structure makes the bag receive the sludge; during crushing, the volume of the sludge can be reduced, the sludge is stirred, the heating is uniform, the drying is accelerated, the discharge port of the sludge after drying can be opened, the discharging is accurate, the bag clamping structure can ensure that the discharging is accurately dropped into the bag for weighing, and thus the metering is accurate.

[0070] Preferably, in step S8, the Fenton reactor comprises a reaction tank 31 and a base 32, the reaction tank 31 is fixedly installed on the base 32, a water outlet pipe is arranged at the top of the reaction tank 31, a vent pipe 34 is arranged at the bottom of the reaction tank 31, valves 35 are arranged on the water outlet pipe and the vent pipe 34, a hydrogen peroxide adding pipe 36, a divalent iron ion solution pipe 318 and a raw water adding pipe 37 are fixedly installed in the reaction tank 31, the reaction tank 31 is also suspendedly installed with a liquid lifting pipe 38 which penetrates up and down, the outlet height of the liquid lifting pipe 38 is lower than the height of the water outlet pipe, an air pipe 39 which injects air into the liquid lifting pipe 38 is communicated with the liquid lifting pipe 38, the air pipe 39 penetrates the reaction tank 31 and communicates with the outside; the wastewater enters the reaction tank 31 through the raw water adding pipe 37, at the same time, the hydrogen peroxide adding pipe 36 and the divalent iron ion solution pipe 318 also add corresponding hydrogen peroxide and divalent iron ion solution, after mutual contact, the reaction starts, when the water level starts to rise and covers the liquid lifting pipe 38, the air pipe 39 blows air into the liquid lifting pipe 38, the bubbles in the liquid lifting pipe 38 move upward, the water flow is driven to flow out from the upper end outlet of the liquid lifting pipe 38, the liquid flows into the liquid lifting pipe 38 from the lower end outlet, the liquid in the reaction tank 31 is continuously circulated, when the water level rises to the water outlet pipe, the water outlet pipe is opened to discharge; in this way, the wastewater can be continuously circulated to ensure sufficient mixing, so as to carry out effective reaction, further reduce the content of organic matter in the wastewater and improve the effectiveness of treatment.

[0071] In addition, the desizing wastewater recycling treatment system for realizing the desizing wastewater recycling treatment method is also disclosed in the embodiment of the application,

[0072] As Figures 1 to 9The application discloses a desizing wastewater recycling treatment system, which comprises a sludge recycling treatment device and a supernatant treatment device, wherein the sludge recycling treatment device comprises a wastewater treatment tank 11, a dewatering device, a crushing and drying device and a weighing device, the dewatering device comprises a centrifugal machine 21, a liquid return pipe 22 is arranged on the centrifugal machine 21 and communicates with the wastewater treatment tank 11, a sewage discharge pipe 23 is arranged on the wastewater treatment tank 11 and penetrates into the centrifugal machine 21, a corresponding power assisting device is arranged on the sewage discharge pipe 23, a material dropping port 24 is arranged on the centrifugal machine 21, a continuous sludge conveying device is arranged between the centrifugal machine 21 and the crushing and drying device, the sludge conveying device corresponds to the material dropping port 24, and the weighing device is connected to the crushing and drying device; the supernatant treatment device comprises an adjusting tank 41, a pipeline mixer 42, an initial sedimentation tank 43, a biochemical tank 44, a secondary sedimentation tank 45, a tertiary sedimentation tank 46, a sludge tank 47, a Fenton reactor, a sludge adjusting tank 49 and a filter press 48; the wastewater treatment tank 11 is provided with a supernatant connecting pipe 122 penetrating into the adjusting tank 41, a plurality of water inlet pipes are connected to the adjusting tank 41, and a flow regulating valve is arranged on each water inlet pipe; the outlet of the adjusting tank 41 communicates with the water inlet of the pipeline mixer 42; the inlet of the initial sedimentation tank 43 communicates with the water outlet of the pipeline mixer 42, the outlet of the initial sedimentation tank 43 communicates with the inlet of the biochemical tank 44, the outlet of the biochemical tank 44 communicates with the inlet of the secondary sedimentation tank 45, the outlet of the secondary sedimentation tank 45 communicates with a raw water adding pipe of the Fenton reactor, a water outlet pipe 33 of the Fenton reactor communicates with the inlet of the tertiary sedimentation tank 46, and the outlet of the tertiary sedimentation tank 46 communicates with the outside; the initial sedimentation tank 43, the secondary sedimentation tank 45 and the tertiary sedimentation tank 46 are respectively provided with a first sludge discharge pipeline 410, a second sludge discharge pipeline 411 and a third sludge discharge pipeline 412 which communicate with the sludge tank 47, a first sludge return pipeline 413 is arranged between the bottom of the secondary sedimentation tank 45 and the initial sedimentation tank 43, a second sludge return pipeline 414 for returning activated sludge is further arranged between the bottom of the secondary sedimentation tank 45 and the biochemical tank 44, and a third sludge return pipeline 415 is arranged between the bottom of the tertiary sedimentation tank 46 and the initial sedimentation tank 43; conveying pumps are arranged on the first sludge discharge pipeline 410, the second sludge discharge pipeline 411, the third sludge discharge pipeline 412, the first sludge return pipeline 413, the second sludge return pipeline 414 and the third sludge return pipeline 415; the sludge tank 47 communicates with the sludge adjusting tank 49, the sludge adjusting tank 49 communicates with the filter press 48, and the filtrate generated by the filter press 48 respectively communicates with a dosing port of the pipeline mixer 42 and the inlet of the initial sedimentation tank 43.

[0073] In this embodiment, several airflow pipes 12 are evenly arranged at the bottom of the wastewater treatment tank 11. Several aeration discs 13 are provided on the airflow pipes 12. The airflow pipes 12 converge at a main air pipe 14, which is connected to an external air inlet pipe 121. An airflow control box 15 is provided on the air inlet pipe 121 to adjust the airflow within the pipe. A rotating rod 16 is rotatably connected to one side of the airflow control box 15. The rotation angle of the rotating rod 16 corresponds to the airflow size in the air inlet pipe. A rotation adjustment structure is provided to adjust the angle of the rotating rod 16. The rotation angle of the rotating rod 16 rotates according to the change of the liquid level in the wastewater treatment tank 11. The wastewater treatment tank 11 is provided with a drain outlet 17 for convenient drainage. The bottom of the wastewater treatment tank 11 is provided with three air flow pipes 12, and the three air flow channels 110 are interconnected. Each air flow channel 110 is equipped with four aeration discs 13, so that the aeration discs 13 are evenly distributed in the wastewater treatment tank 11. The aeration discs 13 are existing structures and therefore will not be described in detail in this text.

[0074] like Figure 3 As shown, the airflow control box 15 includes a rotating ball 18 and an outer casing 19. The rotating ball 18 is rotatably mounted inside the outer casing 19. The outer casing 19 has an airflow channel 110 communicating with the air inlet pipe 121. The rotating ball has a through channel 111 communicating with the airflow channel 110. The rotating ball 18 has a connecting shaft 112 connected to the rotating rod 16. The connecting shaft 112 has a reset structure. The outer casing 19 is set on the air inlet pipe 121 for easy adjustment. Since the rotating ball 18 is connected to the rotating rod 16, when the rotating rod 16 rotates, the rotating ball 18 will also rotate. This will cause the corresponding through channel 111 and airflow channel 110 to deviate, resulting in a reduction in airflow and thus changing the aeration level. The reset structure ensures effective reset.

[0075] like Figure 2As shown, the rotation adjusting structure comprises a pulley 113 fixed at the top of one side of the wastewater treatment tank 11, and an adjusting floating ball 114 is arranged in the wastewater treatment tank 11, the adjusting floating ball 114 and the end of the rotating rod 16 are connected through a traction rope 115, and the traction rope 115 passes through the pulley 113; the adjusting floating ball 114 can effectively float in the wastewater treatment tank 11 and rise and fall along with the liquid level, and through the traction rope 115 and the pulley 113, when the adjusting floating ball 114 falls, the rotating rod 16 is pulled to swing upward, so that the rotating ball 18 also rotates, the through channel 111 deviates from the airflow channel 110, and the airflow is reduced; when the adjusting floating ball 114 rises, the reset structure helps the rotating rod 16 to reset, so that the through channel 111 and the airflow channel 110 can be accurately connected, and the airflow is maximum; in this way, the adjusting floating ball 114 can adjust the aeration size along with the change of the liquid level, improve the use effect, and ensure that the wastewater treatment tank 11 can fully mix and react.

[0076] Further, the reset structure comprises a torsion spring 116, the torsion spring 116 is sleeved on the connecting shaft 112, one end of the torsion spring 116 is fixed with the rotating rod 16, and the other end of the torsion spring 116 is fixed with the outer box body 19; when the adjusting floating ball 114 drives the rotating rod 16 to rotate, the torsion spring 116 is deformed under force, and the airflow is adjusted at this time, and the rotating rod 16 cannot be reset under the force of the torsion spring 116, when the adjusting floating ball 114 rises, the rotating rod 16 loses traction, and the torsion spring 116 can drive the rotating rod 16 to reset, so that the airflow is maximum.

[0077] In the embodiment, the outer box body 19 is provided with a limiting block for limiting the rotating rod 16, the limiting block comprises an upper limiting block 117 and a lower limiting block 118, the lower limiting block 118 is located below the rotating rod 16 and the through channel 111 and the airflow channel 110 are fully opened, and the upper limiting block 117 is located above the rotating rod 16 and the through channel 111 and the airflow channel 110 reach the hole for the minimum airflow flow; since the through channel 111 and the airflow channel 110 need to ensure a certain opening connection, the rotating ball 18 does not need a large rotating range, the rotating angle of the rotating ball 18 can be limited by limiting the swing angle of the rotating rod 16 through the upper limiting block 117 and the lower limiting block 118, so that the rotating rod 16 can rotate accurately during use, and the airflow can effectively pass through.

[0078] The rotating ball 18 is provided with a sealing ring 119 on both sides of the through channel 111, and a rotating bearing 120 is arranged between the connecting shaft 112 and the outer box body 19; the sealing ring 119 ensures good sealing effect of the airflow conveying, and the rotating bearing 120 facilitates the rotation of the connecting shaft 112 and reduces wear.

[0079] As Figure 6As shown, the crushing drying device comprises a crushing box 25 fixedly installed on a crushing installation platform 26, a rotating shaft 27 rotatably installed in the crushing box 25, a crushing blade 28 arranged on the rotating shaft 27, a rotating power device arranged at the top of the crushing box 25 for driving the rotating shaft 27 to rotate, a stabilizing support 29 arranged in the crushing box 25 for stabilizing the rotation of the rotating shaft 27, a crushing inlet 210 and an exhaust port 211 arranged at the top of the crushing box 25 and corresponding to the sludge conveying device, an openable and closable discharge port 212 arranged at the bottom of the crushing box 25, a heating structure arranged on the crushing box 25, a flap valve 215 flange-connected to the discharge port 212 of the crushing box 25, and a bag clamping structure flange-connected to the flap valve 215. The rotating power device comprises a crushing rotating motor 213 fixedly installed at the top of the crushing box 25, and the stabilizing support 29 is arranged at the bottom of the crushing box 25 to effectively support the rotating shaft 27, and a stabilizing bearing 214 is arranged on the stabilizing support 29 to facilitate the rotation of the rotating shaft 27. In this way, the rotating shaft 27 penetrates through the top of the crushing box 25 and is supported by the stabilizing support 29 to ensure stable rotation, and the crushing blade 28 can effectively stir and scatter the sludge to improve the drying efficiency. An exhaust pump is arranged at the exhaust port 211 to effectively exhaust the water vapor emitted by the heated sludge. The flap valve 215 can effectively block the discharge port 212, and the bag clamping structure can effectively catch the sludge discharged from the discharge port 212 to ensure accurate measurement. The flap valve 215 is a commercially available structure, and therefore is not described in detail herein.

[0080] As Figure 4 and Figure 7As shown, the sludge conveying device comprises a sludge conveyor belt 217 and a screw conveyor which is connected behind the sludge conveyor belt 217, one end of the sludge conveyor belt 217 corresponding to the material dropping port 24; the screw conveyor comprises a material dropping hopper 222, a hopper support 223, a conveying pipe 224 and a discharging pipe 225, a screw shaft 226 being rotatably installed in the conveying pipe 224, the material dropping hopper 222 and the discharging pipe 225 being located at two ends of the conveying pipe 224, the material dropping hopper 222 corresponding to the sludge conveyor belt 217, the discharging pipe 225 corresponding to the crushing inlet 210, the screw shaft 226 being provided with an agitating blade 227 at intervals between the blades 240, and the conveying pipe 224 being provided at the end with a screw driving power device for driving the screw shaft 226 to rotate; since the centrifuge 21 is a distance away from the crushing box 25 and has different heights, the centrifuge 21 continuously drops materials, so the sludge conveyor belt 217 needs to continuously convey the materials, which can improve the conveying efficiency and save labor; the sludge conveyor belt 217 is arranged on a conveyor frame 216, the conveyor frame 216 being provided with a driving pulley 218, a driven pulley 219 and an auxiliary pulley 220, the driving pulley 218 being driven to rotate by a pulley rotating motor, the sludge conveyor belt 217 changing the conveying direction by the auxiliary pulley 220 to ensure the conveying accuracy, and the sludge conveyor belt 217 being provided with material blocking blocks 221 on both sides to prevent the sludge from flowing to both sides during conveying, further ensuring the conveying accuracy; the screw driving power device comprises a screw driving motor 228 which is fixedly installed at the top end of the conveying pipe 224 to drive the screw shaft 226 to rotate, and the blades 240 on the screw shaft 226 thus rotate to push the sludge, and the agitating blade 227 also stirs the conveyed sludge when the screw shaft 226 rotates, ensuring that the sludge particles are not too large during conveying and improving the conveying effect.

[0081] As Figure 5 and Figure 6As shown, the bag clamping structure comprises a bag clamping pipe 229 connected with the flange of the turnover valve 215, a bag clamping claw 230 hinged with the bag clamping pipe 229, an opening and closing power device for driving the bag clamping claw 230 to open and close, and a limiting structure for limiting the position of the bag clamping claw 230 on the bag clamping pipe 229; the weighing device comprises a weighing hopper 232 for accommodating the bag, the weighing hopper 232 is fixedly installed on a weighing support 233 through a weighing sensor, the weighing support 233 is fixedly installed on a sliding block 234, the sliding block 234 is slidingly installed on a sliding guide rail 235, the sliding guide rail 235 is provided with a weighing station 236 and a loading and unloading station 237 corresponding to the bag clamping pipe 229, and the sliding block 234 moves back and forth through a sliding adjusting device; the opening and closing power device comprises an opening and closing cylinder 231, the bag clamping claw 230 is two and symmetrically hinged on the bag clamping pipe 229, the tail of the opening and closing cylinder 231 is hinged in the middle of one of the bag clamping claws 230, the telescopic end of the opening and closing cylinder 231 is hinged in the middle of the other bag clamping claw 230, and the opening and closing cylinder 231 is also provided with two, which are respectively located on the two sides of the bag clamping claw 230, so that the clamping effect is improved; and the sliding adjusting device is manually moved, when the weighing hopper 232 is at the loading and unloading station 237, the bag is placed in the weighing hopper 232, then the weighing hopper 232 is moved to the weighing station 236, and then the bag opening is fixed on the bag clamping pipe 229 through the bag clamping claw 230, so that the clamping is effectively completed, the weighing is simultaneously performed, and after the weighing is completed, the bag clamping claw is loosened, so that the weighing hopper 232 is pushed back to the loading and unloading station 237, the bag containing the sludge is conveniently taken out, a new bag is re-placed, and the weighing sensor is a structure existing on the market, so it is not described in detail herein.

[0082] In the embodiment, the heating structure comprises an electric heating coil 238 wrapped on the crushing box 25; the electric heating coil 238 is attached to the crushing box 25, can continuously heat the inside of the crushing box 25, so that the heating is simple and convenient, and the sludge is effectively dried.

[0083] Further, the limiting structure comprises a limiting rod 239 fixedly installed on the bag clamping pipe 229, and the limiting rod 239 is located outside the bag clamping claw 230; when the bag opening is sleeved on the bag clamping pipe 229, the bag clamping claw 230 does not need to be opened too large, so that the opening and closing time is reduced, so that when the bag clamping claws 230 are opened to each other, the bag clamping claws 230 will be topped to the limiting rod 239, so that the opening and closing cannot be continuously performed, thereby completing the limiting.

[0084] As shown in the figure, Figure 8 and Figure 9As shown, the Fenton reactor comprises a reaction tank 31 and a base 32, the reaction tank 31 is fixedly installed on the base 32, the top of the reaction tank 31 is provided with a water outlet pipe 33, the bottom of the reaction tank 31 is provided with a vent pipe 34, the water outlet pipe 33 and the vent pipe 34 are both provided with valves 35, the reaction tank 31 is fixedly installed with a hydrogen peroxide adding pipeline 36, a divalent iron ion solution pipeline 318 and a raw water adding pipeline 37, the reaction tank 31 is also suspendedly installed with an up-and-down penetrating liquid lifting pipe 38, the outlet height of the liquid lifting pipe 38 is lower than the height of the water outlet pipe 33, the liquid lifting pipe 38 is communicated with an air pipe 39 for injecting gas into the liquid lifting pipe 38, the air pipe 39 penetrates the reaction tank 31 and communicates with the outside; the hydrogen peroxide adding pipeline 36 and the divalent iron ion solution pipeline 318 are fixedly installed in the reaction tank 31 through a fixed plate 310, the fixed plate 310 is fixedly installed on the side wall of the reaction tank 31, and the raw water adding pipeline 37 is fixedly installed in the middle of the reaction tank 31; in this way, when the raw water adding pipeline 37 communicates with the secondary sedimentation tank 45, the wastewater enters the reaction tank 31 and is fully reacted to improve the treatment effect of the wastewater.

[0085] In the embodiment, the upper half of the pipe section of the liquid lifting pipe 38 is provided with a gas leakage hole 311, and a pipe section airflow blocking structure is arranged on the pipe section of the liquid lifting pipe 38 to block the flow direction of the gas leakage from the gas leakage hole 311; the top of the liquid lifting pipe 38 is provided with a top airflow blocking structure; two gas leakage holes 311 are arranged on the pipe section of the liquid lifting pipe 38 and are symmetrically arranged, so that part of the gas can leak out of the liquid lifting pipe 38 when the gas passes through the gas leakage hole 311, thereby disturbing the outside and further improving the reaction effect; meanwhile, the pipe section airflow blocking structure can expand the flow range of the gas when the gas is discharged from the gas leakage hole 311; similarly, the top airflow blocking structure can also expand the flow range of the gas when the gas is discharged from the top, thereby fully disturbing the liquid in the reaction tank 31 and fully reacting.

[0086] The pipe section airflow blocking structure comprises a pipe section airflow baffle 312 fixedly installed on the pipe section of the liquid lifting pipe 38, and the pipe section airflow baffle 312 is in a conical ring structure; the pipe section airflow baffle 312 is effectively supported by a support rod 313 protruding from the liquid lifting pipe 38; the top airflow blocking structure comprises a top airflow baffle 314 fixedly installed on the top of the liquid lifting pipe 38, and the top airflow baffle 314 is in a conical structure; the top of the liquid lifting pipe 38 is also provided with a support rod 313 for supporting the top airflow baffle 314, so as to increase the resistance of the gas flowing upward from the liquid, thereby increasing the disturbance effect; meanwhile, the liquid lifting pipe 38 can avoid increasing the resistance of the liquid extraction when extracting the liquid, thereby facilitating the formation of a circulating water flow and improving the use effect.

[0087] The hydrogen peroxide adding pipe 36 and the raw water adding pipe 37 are installed on both sides of the riser pipe 38, and the lower ends of the hydrogen peroxide adding pipe 36 and the raw water adding pipe 37 are higher than the lower end of the riser pipe 38; thus, the water flow can be reacted first when entering the reaction tank 31, and then can flow into the riser pipe 38, and the ends of the riser pipe 38 can ensure that the water flow is extracted uniformly, so that the reaction can be more sufficient.

[0088] The shaft sleeve 315 is fixedly installed on the pipe section of the riser pipe 38, the connecting rods 316 are fixedly connected to the inner wall of the reaction tank 31, and the hollow channels 317 are arranged on the connecting rods 316; thus, the riser pipe 38 can be suspendedly installed in the reaction tank 31, and the hollow channels 317 on the connecting rods 316 can reduce the resistance of the water flow during circulation and improve the use effect.

[0089] The adjusting tank 41 is connected to other waste water, and sludge and supernatant are formed after the waste water in the waste water treatment tank 11 is treated; the supernatant is treated effectively, and the supernatant enters the adjusting tank 41 through the supernatant connecting pipe 122, and then the waste water is fully mixed by the pipe mixer 42; the pipe mixer 42 is a structure existing in the market, and thus is not described in detail herein; because the supernatant is acidic and the other waste water is alkaline, the waste water enters the primary settling tank 43 to start the treatment of the waste water, sludge is generated in the waste water and is precipitated, the sludge in the primary settling tank 43 is discharged into the sludge tank 47, and then the waste water in the primary settling tank 43 continues to enter the biochemical tank 44 to further react, enters the secondary settling tank 45 to decompose and precipitate the organic matter in the liquid, and when the waste water is not fully reacted, the waste water is discharged back to the biochemical tank 44 to be re-reacted, the sludge in the secondary settling tank 45 is also discharged into the sludge tank 47, the waste water in the secondary settling tank 45 enters the Fenton reactor to perform Fenton reaction, so that the content of the organic matter in the waste water is further reduced, and finally enters the tertiary settling tank 46 to be precipitated; when the waste water in the tertiary settling tank 46 meets the discharge requirements, the waste water is discharged, the sludge in the tertiary settling tank 46 is discharged into the sludge tank 47, and when the waste water in the secondary settling tank 45 and the tertiary settling tank is not fully reacted, the waste water is discharged back to the primary settling tank 43 to be treated again, until the waste water meets the discharge requirements; the sludge in the sludge tank 47 enters the sludge adjusting tank 49 and lime is added, so that the harmful substances in the sludge are stabilized and solidified, and the sludge is more easily dewatered and treated; finally, the sludge is separated into filtrate and filter residue by the filter press 48, the filter residue is discharged, and the filtrate is returned to the pipe mixer 42 or the primary settling tank 43 to be recycled.

[0090] The above-described embodiments are only preferred embodiments of the present application, and do not limit the scope of the present application; various modifications and improvements of the technical solutions of the present application, which are made without departing from the design spirit of the present application, should fall within the protection scope of the present application.

Claims

1. A desizing wastewater recovery treatment method characterized by comprising: The method comprises the following steps: ​ S1. providing a desizing wastewater recycling system, comprising a sludge recycling device and a supernatant treatment device, wherein the sludge recycling device comprises a wastewater treatment tank, a dewatering device, a crushing and drying device and a weighing device, the dewatering device comprises a centrifuge, the centrifuge is provided with a liquid return pipe in communication with the wastewater treatment tank, the wastewater treatment tank is provided with a sludge discharge pipe leading into the centrifuge, the sludge discharge pipe is provided with a corresponding power-assisted power device, the centrifuge is provided with a material dropping port, a continuous sludge conveying device is arranged between the centrifuge and the crushing and drying device, the sludge conveying device corresponds to the material dropping port, and the crushing and drying device is connected with the weighing device below; S2. mixing the wastewater and the acidic liquid in the wastewater treatment tank, and allowing the sludge to enter the centrifuge from the sludge discharge pipe and the supernatant to enter the adjusting tank from the supernatant connecting pipe; S3. centrifuging and dewatering the sludge in the centrifuge, allowing the liquid separated from the sludge to return to the wastewater treatment tank through the liquid return pipe, and allowing the sludge to drop from the material dropping port to the sludge conveying device and then to the crushing and drying device; S4. crushing and drying the sludge in the crushing and drying device, and then weighing the sludge by the weighing device; S5. introducing other wastewater into the adjusting tank through other water inlet pipes, and then mixing the wastewater in the adjusting tank by the pipeline mixer and then allowing the wastewater to enter the primary sedimentation tank; S6. allowing the wastewater in the primary sedimentation tank to be subjected to sedimentation, allowing the sludge to be discharged into the sludge tank through the first sludge discharge pipe, and allowing the wastewater to enter the biochemical tank from the primary sedimentation tank. S7, the wastewater in the biochemical tank is reacted again, and then enters the secondary sedimentation tank for sedimentation, the sludge in the secondary sedimentation tank is discharged into the sludge tank through the second sludge discharge pipeline, and the wastewater from the secondary sedimentation tank enters the Fenton reactor; S8, the Fenton reactor further reacts the wastewater, and after the reaction is completed, the wastewater enters the third sedimentation tank for sedimentation, the sludge is discharged into the sludge tank through the third sludge discharge pipe, and the wastewater in the third sedimentation tank is discharged to the outside; S9, the sludge in the sludge tank is transported to the sludge conditioning tank, lime is added into the sludge tank, and finally the sludge is pressure filtered through the pressure filter to separate filtrate and filter residue, the filtrate is returned to the pipe return device and the primary sedimentation tank, and the filter residue is discharged, In step S2, a plurality of airflow pipes are uniformly arranged at the bottom of the wastewater treatment tank, a plurality of aeration discs are arranged on the airflow pipes, the airflow pipes are connected to a total gas pipe, the total gas pipe is connected to an external air inlet pipe, an airflow control box for adjusting the airflow in the air inlet pipe is arranged on the air inlet pipe, a rotating rod is rotatably connected to one side of the airflow control box, the rotating angle of the rotating rod corresponds to the airflow size of the air inlet pipe, a rotating adjusting structure for adjusting the rotating angle of the rotating rod is arranged on the rotating rod, the rotating angle of the rotating rod changes with the change of the liquid level of the wastewater treatment tank, and a drain port for conveniently draining water is arranged on the wastewater treatment tank; the wastewater treatment process in the wastewater treatment tank comprises the following steps: S21, the rotating adjusting structure adjusts and rotates the rotating rod to control the airflow size passing through the airflow control box; S22, the external air inlet pipe transports airflow into the total gas pipe and disperses the airflow to each airflow pipe, and the airflow is aerated through the aeration disc to complete the disturbance of the wastewater, The airflow control box comprises a rotating ball and an outer box body, the rotating ball is rotatably installed in the outer box body, an airflow channel is arranged on the outer box body and connected to the air inlet pipe, a through channel is arranged in the rotating ball and connected to the airflow channel, a connecting shaft is arranged on the rotating ball and connected to the rotating rod, and a reset structure is arranged on the connecting shaft; the outer box body is arranged above the air inlet pipe to facilitate adjustment, and the rotating ball is connected to the rotating rod, The rotating adjusting structure comprises a pulley fixed to the top of one side of the wastewater treatment tank, an adjusting float ball is arranged in the wastewater treatment tank, the adjusting float ball and the end of the rotating rod are connected through a traction rope, and the traction rope passes through the pulley; the adjusting float ball can float in the wastewater treatment tank, when the adjusting float ball descends, the rotating rod swings upward, and the airflow passing through the airflow control box becomes smaller; when the adjusting float ball rises, the rotating rod swings downward, and the airflow passing through the airflow control box becomes larger, The reset structure comprises a torsional spring, the torsional spring is sleeved on the connecting shaft, one end of the torsional spring is fixed to the rotating rod, and the other end of the torsional spring is fixed to the outer box body; A limiting block for limiting the rotating rod is arranged on the outer box body, the limiting block comprises an upper limiting block and a lower limiting block, the lower limiting block is located below the rotating rod, and the upper limiting block is located above the rotating rod; The rotating ball is provided with a sealing ring on both sides of the through channel, and a rotating bearing is arranged between the connecting shaft and the outer box body.

2. A desizing wastewater recovery treatment method as claimed in claim 1, characterized by: In step S3, the sludge conveying device comprises a sludge conveying belt and a screw conveyor, which successively link to convey the sludge, and the screw conveyor is provided with stirring blades to stir the sludge while conveying the sludge.

3. A desizing wastewater recovery treatment method as claimed in claim 2, characterized by: In step S5, the crushing and drying device comprises a crushing box, a turnover valve is flange-connected to the discharge port of the crushing box, and a bag clamping structure is flange-connected to the turnover valve; when the sludge is crushed and dried in the crushing box, the turnover valve controls the discharge time of the sludge after crushing and drying, and the bag clamping structure makes the bag receive the sludge.

4. A desizing wastewater recovery treatment method as claimed in claim 3, characterized by: In step S8, the Fenton reactor comprises a reaction tank and a base, the reaction tank is fixedly installed on the base, a water outlet pipe is arranged at the top of the reaction tank, a vent pipe is arranged at the bottom of the reaction tank, valves are arranged on the water outlet pipe and the vent pipe, a hydrogen peroxide adding pipeline, a divalent iron ion solution pipeline and a raw water adding pipeline are fixedly installed in the reaction tank, an up-and-down liquid lifting pipe is suspendedly installed in the reaction tank, the height of the outlet of the liquid lifting pipe is lower than the height of the water outlet pipe, an air pipe for injecting air into the liquid lifting pipe is communicated in the liquid lifting pipe, the air pipe penetrates through the reaction tank and is communicated with the outside; the wastewater enters the reaction tank through the raw water adding pipeline, and the hydrogen peroxide adding pipeline and the divalent iron ion solution pipeline also add corresponding hydrogen peroxide and divalent iron ion solution, and the hydrogen peroxide and the divalent iron ion solution start to react after contacting with each other, when the water level starts to rise and covers the liquid lifting pipe, the air pipe blows air into the liquid lifting pipe, the bubbles in the liquid lifting pipe move upward, the water flow is discharged from the upper end outlet of the liquid lifting pipe, the liquid is flowed into the liquid lifting pipe from the lower end outlet of the liquid lifting pipe, the liquid in the reaction tank is continuously circulated, and when the water level rises to the water outlet pipe, the water outlet pipe is opened to discharge.

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