Intelligent sewage recycling system

Abstract

The application relates to an intelligent sewage circulating system and belongs to the sewage treatment field. The application comprises a primary filtering mechanism, a secondary filtering mechanism, a clean water storage bin, a gas reaction channel, a liquid reaction tower and a waste liquid collecting bin. In order to ensure that harmful substances generated in the sewage filtering process are fully reacted and absorbed, tail gas generated in the process is reacted and recycled through gas-liquid two modes. In the reaction stage, a segmented gas purification chamber is used, and a spiral flow guide plate is embedded in the chamber, so that sufficient reaction space and time are ensured. In the next recycling process, liquid capable of absorbing and recycling substances is uniformly sprayed through a circumferential array of sprinklers in a spraying mode. The gas entering the tower rises around under the influence of the arc-shaped spoiler on the inner wall. In the process, the reaction liquid is fully mixed with the gas in the reaction tower, and then enters the waste liquid collecting bin through the waste liquid port at the bottom for next-step treatment.

Description

TECHNICAL FIELD

[0001] The present application relates to an intelligent sewage recycling system. BACKGROUND

[0002] Various waste water tends to produce foul-smelling or toxic gas in filtration, and the conventional filtration mode produces a large amount of toxic gas, corrosive gas, flammable and explosive gas, etc., such as hydrogen sulfide, hydrogen cyanide, carbon monoxide, carbon dioxide, etc., and some are toxic gases produced in the filtration process, such as chlorine gas, ozone gas, chlorine dioxide gas, etc. If these harmful and toxic gases cannot be treated in time, not only the environment will be polluted, but also there will be safety hazards.

[0003] The traditional denitrification process of sewage treatment generally uses soluble organic matter such as methanol, glucose and sucrose as external carbon source when the carbon source is insufficient. Such carbon source has low molecular weight, is beneficial to the utilization of microorganisms, has high denitrification rate, is beneficial to improve the denitrification effect and reduce the hydraulic retention time, and is the primary choice of external carbon source for sewage plants at present. When methanol is used as the external carbon source for biological denitrification, a period of adaptation is required to achieve the expected denitrification effect, but the methanol dosage must be strictly controlled, and the economic factors should be considered comprehensively, and the dosage should be adjusted according to the surrounding environment. However, the optimal carbon-nitrogen ratio of glucose as carbon source is significantly higher than that of methanol, and when the carbon source is insufficient, the nitrite accumulation phenomenon is more serious when glucose is used as carbon source. Therefore, when such substances are used as external carbon source, the dosage is not easy to control, secondary pollution is easy to occur, the operation cost is high, and special metering and dosing equipment needs to be set up. SUMMARY

[0004] The technical problem to be solved by the present application is to provide an intelligent sewage recycling system.

[0005] The present application adopts the following technical solutions:

[0006] The present application comprises a primary filtration mechanism, a secondary filtration mechanism, a clean water storage bin, a gas reaction channel, a liquid reaction tower and a waste liquid collection bin.

[0007] The primary filtration mechanism, the secondary filtration mechanism and the clean water storage bin are sequentially communicated, the gas reaction channel, the liquid reaction tower and the waste liquid collection bin are sequentially communicated, the primary filtration mechanism and the secondary filtration mechanism are respectively communicated with the gas reaction channel, the primary filtration mechanism is communicated with the underground sewage conveying pipeline, and the clean water storage bin is provided with a water outlet pipe

[0008] The end of the gas reaction channel is connected with a purified gas supply pipeline, and the lower end of the gas reaction channel is provided with a first gas inlet and a second gas inlet.

[0009] The gas reaction channel is provided with a first baffle, a second baffle, a third baffle, a first spiral spoiler and a second spiral spoiler, and the first baffle, the second baffle and the third baffle are circumferentially provided with air holes.

[0010] The first gas purification chamber is formed between the first baffle and the second baffle, the first spiral spoiler is fixedly arranged in the first gas purification chamber, the second gas purification chamber is formed between the second baffle and the third baffle, the second spiral spoiler is fixedly arranged in the second gas purification chamber, the first gas inlet is arranged at the first gas purification chamber, and the second gas inlet is arranged at the second gas purification chamber.

[0011] The front end of the gas reaction channel is connected with the gas inlet end of the liquid reaction tower, and the vertical height of the end of the gas reaction channel is lower than that of the front end.

[0012] The liquid reaction tower is provided with an arc-shaped spoiler, a liquid spraying device and a liquid recovery device, the arc-shaped spoilers are circumferentially and intervaliy arranged on the inner wall of the liquid reaction tower, the arc-shaped spoilers are arranged in a spiral upward manner, and the bottommost arc-shaped spoiler is matched with the position of the gas inlet end of the liquid reaction tower.

[0013] The liquid spraying device is composed of a main pipeline, a sub-pipeline and a spraying head, the end of the main pipeline is connected with a reaction liquid supply pipeline, the front end of the main pipeline is connected with the sub-pipeline, the sub-pipeline is circumferentially arranged at the front end of the main pipeline, and the spraying heads are uniformly arranged on the sub-pipeline.

[0014] The liquid recovery device is composed of a liquid guide tray and a waste liquid collection bin, the upper surface of the liquid guide tray is funnel-shaped, a waste liquid port is arranged at the center of the liquid guide tray, the waste liquid port is connected with the waste liquid collection bin through a waste liquid pipe, and the waste liquid collection bin is connected with a sewage pipe.

[0015] The primary filtration mechanism comprises an aeration denitrification chamber, a phosphorus removal chamber and a sedimentation chamber connected in sequence.

[0016] The aeration denitrification chamber is provided with a denitrification mixture, and the phosphorus removal chamber is provided with an electrocoagulation device.

[0017] The secondary filtration mechanism comprises a filtration chamber and a disinfection chamber connected in sequence.

[0018] The output end of the disinfection chamber is connected with a purified water storage bin.

[0019] The denitrogenation mixture comprises sponge iron, wood chips, walnut shells, bentonite and polyurethane, and the weight ratio is as follows:

[0020] Sponge iron 1-2;

[0021] Wood chips 10-60;

[0022] Walnut shells 10-60;

[0023] Bentonite 1-5;

[0024] Polyurethane 1-100;

[0025] The denitrogenation mixture further comprises ceramic granules, bean pods and straw.

[0026] The primary filtration mechanism is composed of a first water pump, a first-stage filtration mechanism and a second-stage filtration mechanism, the first-stage filtration mechanism comprises an AAO treatment unit and an MBR membrane tank unit, the AAO treatment unit comprises an anoxic tank and an aerobic tank, the anoxic tank and the aerobic tank are connected in series, and the aerobic tank and the MBR membrane tank unit form an integrated tank,

[0027] The secondary filtration mechanism comprises a first water pump, a sedimentation tank and a microfiltration device, and a disinfectant is arranged in the sedimentation tank.

[0028] The gas supplied by the purified gas supply pipeline is ozone.

[0029] The liquid supplied by the reaction liquid supply pipeline is water.

[0030] The angle α between the gas reaction channel and the horizontal direction is 0.35-5 degrees.

[0031] The positive effects of the present application are as follows:

[0032] In order to ensure that the harmful substances generated by sewage filtration are fully reacted and absorbed, the tail gas generated is reacted and recovered through gas-liquid two ways, in the reaction stage, a segmented gas purification chamber is used, and a spiral guide plate is embedded in the chamber, so that sufficient reaction space and time are ensured, and in the next recovery process, the liquid capable of absorbing the recovered substances is uniformly sprayed out through the circumferential array of the shower through the spraying mode, and the gas entering the tower rises around under the influence of the arc-shaped spoiler on the inner wall, in this process, the reaction liquid and the gas in the reaction tower are fully mixed, and then enter the waste liquid collection bin through the waste liquid outlet at the bottom for next step processing. BRIEF DESCRIPTION OF DRAWINGS

[0033] The accompanying drawings illustrate the present application. Figure 1 The accompanying drawings illustrate the present application.

[0034] The accompanying drawings illustrate the present application. Figure 2 The accompanying drawings illustrate the present application.

[0035] attached Figure 3 The schematic diagram of the gas reaction channel structure of the present application.

[0036] attached Figure 4 The schematic diagram of the gas reaction channel angle of the present application.

[0037] attached Figure 5 The schematic diagram of the liquid reaction tower structure of the present application.

[0038] attached Figure 6 The schematic diagram of the gas reaction channel inner baffle structure of the present application. DETAILED DESCRIPTION

[0039] As shown in the attached Figures 1-6 , the present application includes a primary filtering mechanism 1, a secondary filtering mechanism 2, a clean water storage bin 3, a gas reaction channel 4, a liquid reaction tower 5 and a waste liquid collection bin 6;

[0040] The primary filtering mechanism 1, the secondary filtering mechanism 2 and the clean water storage bin 3 are sequentially communicated, the gas reaction channel 4, the liquid reaction tower 5 and the waste liquid collection bin 6 are sequentially communicated, the primary filtering mechanism 1 and the secondary filtering mechanism 2 are respectively communicated with the gas reaction channel 4, the primary filtering mechanism 1 is communicated with the underground sewage conveying pipeline, and the clean water storage bin 3 is provided with a water outlet pipe 12

[0041] The end of the gas reaction channel 4 is communicated with the purified gas supply pipeline, the lower end of the gas reaction channel 4 is provided with a first air inlet and a second air inlet, the first air inlet is communicated with the primary filtering mechanism 1 through a first air inlet pipeline 15, and the second air inlet is communicated with the secondary filtering mechanism 2 through a second air inlet pipeline 16,

[0042] The gas reaction channel 4 is provided with a first baffle 22, a second baffle 26, a third baffle 14, a first spiral spoiler 24 and a second spiral spoiler 27, and the first baffle 22, the second baffle 26 and the third baffle 14 are circumferentially provided with air holes 23,

[0043] The first baffle 22 and the second baffle 26 form a first gas purification chamber 25, the first spiral spoiler 24 is fixedly arranged in the first gas purification chamber 25, the second baffle 26 and the third baffle 14 form a second gas purification chamber 13, the second spiral spoiler 27 is fixedly arranged in the second gas purification chamber 13, the first air inlet is arranged at the first gas purification chamber 25, and the second air inlet is arranged at the second gas purification chamber 13,

[0044] The front end of the gas reaction channel 4 is communicated with the air inlet end of the liquid reaction tower 5, and the vertical height of the end of the gas reaction channel 4 is lower than that of the front end.

[0045] The liquid reaction tower 5 is provided with arc-shaped spoiler plates 18, a liquid spraying device and a liquid recovery device. The arc-shaped spoiler plates 18 are circumferentially and spacedly arranged on the inner wall of the liquid reaction tower 5, and are arranged in a spiral ascending manner, with the bottommost arc-shaped spoiler plate 18 being adapted to the position of the gas inlet end of the liquid reaction tower 5,

[0046] The liquid spraying device is composed of a main pipeline 8, a sub-pipeline 9 and a spraying head 10. The end of the main pipeline 8 is connected with a reaction liquid supply pipeline, the front end of the main pipeline 8 is connected with the sub-pipeline 9, the sub-pipeline 9 is circumferentially arranged at the front end of the main pipeline 8, and the spraying head 10 is uniformly arranged on the sub-pipeline 9.

[0047] The liquid recovery device is composed of a liquid guide tray 19 and a waste liquid collection bin 6. The upper surface of the liquid guide tray 19 is funnel-shaped, a waste liquid port 20 is arranged at the center of the liquid guide tray 19, the waste liquid port 20 is connected with the waste liquid collection bin 6 through a waste liquid pipe 21, and the waste liquid collection bin 6 is connected with a sewage pipe 17.

[0048] The gas supplied by the purified gas supply pipeline is ozone. Ozone can purify some harmful gases in the air, such as sulfur dioxide (SO2), carbon monoxide (CO), some volatile organic compounds (VOCs) and the like. It can reduce the harm of these substances to the environment and human body by oxidizing these substances and converting them into more stable or more easily deposited compounds.

[0049] After the reaction, the gas enters the liquid reaction tower, and the liquid input through the reaction liquid supply pipeline is water, so that the residual products in the air can be recovered.

[0050] The angle α between the gas reaction channel 4 and the horizontal direction is 0.35-5 degrees, which is adjusted according to the length of the pipeline, and the input end is lower than the output end. Embodiment

[0051] The primary filtration mechanism 1 includes an aeration denitrification chamber, a phosphorus removal chamber and a sedimentation chamber which are sequentially connected,

[0052] The aeration denitrification chamber is provided with a denitrification mixture, and the phosphorus removal chamber is provided with an electrocoagulation device,

[0053] The secondary filtration mechanism 2 includes a filtration chamber and a disinfection chamber which are sequentially connected,

[0054] The output end of the disinfection chamber is connected with a purified water storage bin 3.

[0055] In order to reduce or not to add carbon source reagent to achieve the requirement of deep denitrification of sewage treatment, the denitrification mixture adopts the following weight ratio:

[0056] Sponge iron 1;

[0057] Wood chips 10;

[0058] Walnut shell 10;

[0059] Bentonite 1;

[0060] Polyurethane 1;

[0061] After mixing, put into the denitrification chamber for aeration treatment, complete the denitrification process. Embodiment

[0062] The primary filtration mechanism 1 includes aeration denitrification chamber, phosphorus removal chamber, sedimentation chamber,

[0063] The aeration denitrification chamber is provided with a denitrification mixture, and the phosphorus removal chamber is provided with an electric flocculation device,

[0064] The secondary filtration mechanism 2 includes a filtration chamber and a disinfection chamber,

[0065] The output end of the disinfection chamber is communicated with the clean water storage bin 3.

[0066] In order to reduce or not to add carbon source reagent to achieve the requirement of advanced denitrification of sewage treatment, the denitrification mixture adopts the following weight ratio:

[0067] Sponge iron 2;

[0068] Wood chips 60;

[0069] Walnut shell 60;

[0070] Bentonite 5;

[0071] Polyurethane 100;

[0072] After mixing, put into the denitrification chamber for aeration treatment, complete the denitrification process.

[0073] The denitrification mixture further includes ceramic particles, bean pods and wheat stalks.

[0074] Wherein the sponge iron can be replaced by ceramic particles, the wood chips can be replaced by bean pods, and the walnut shell can be replaced by wheat stalks.

[0075] In recent years, more and more researchers are trying to find new types of denitrification carbon sources to replace liquid carbon sources. Biodegradable polymers and solid cellulose substances are gradually favored by researchers because they can avoid repeated addition, are non-toxic and harmless, and have other advantages. Natural solid substances are rich in cellulose and are used as denitrification solid carbon sources. They are inexpensive, widely available, have a loose structure, a large specific surface area, and are conducive to microbial attachment and growth. Because the easily decomposed substances in the cellulose carbon source are utilized by microorganisms at the beginning of the reaction, the carbon source is sufficient, and the denitrification efficiency is high. In the later stage, the carbon source required by microorganisms must be obtained by decomposing and utilizing cellulose, hemicellulose, and lignin in straw. The crystal lattice structure of cellulose and the cross-linking and winding of cellulose, hemicellulose, and lignin are not conducive to the decomposition and utilization of cellulose. Alkaline pretreatment refers to treating cellulose substances with strong alkali and weak alkali. This method can effectively remove lignin and reduce the crystallinity of cellulose. It is the most widely used and most concerned pretreatment method at present. Studies have found that after alkaline pretreatment of cellulose substances, the crystallinity and polymerization degree of cellulose are reduced, the wrapping of lignin on cellulose and hemicellulose is broken, and the raw material is more easily hydrolyzed and utilized. The hydrolyzed product can be used as a microbial denitrification energy source. At a certain ratio, the hydrolysis of lignocellulose can reach an equilibrium state, carbon sources are released at low concentrations, and carbon sources stop being released at high concentrations, thereby achieving the purpose of stable and slow release of carbon sources. Embodiment

[0076] The primary filtration mechanism 1 is composed of a first water pump 7, a primary filtration mechanism, and a secondary filtration mechanism. The primary filtration mechanism includes an AAO treatment unit and an MBR membrane tank unit. The AAO treatment unit includes an anoxic tank and an aerobic tank, which are connected in series. The aerobic tank and the MBR membrane tank unit form an integrated tank.

[0077] AAO stands for Anaerobic-Anoxic-Oxic, which is an abbreviation for anaerobic-anoxic-aerobic.

[0078] MBR stands for Membrane Bio-Reactor, and MBR membrane is also known as membrane bioreactor.

[0079] The secondary filtration mechanism 2 includes a second water pump 11, a sedimentation tank, and a microfiltration device. The sedimentation tank is provided with a disinfectant.

[0080] The microfiltration device can use a Chuanbo-02 type buried integrated sewage treatment equipment or be adjusted according to the actual sewage treatment capacity.

[0081] The disinfectant is added according to the remaining impurities in the sewage, such as sodium hydroxide.

Claims

1. An intelligent wastewater recycling system, characterized in that... It includes a primary filtration unit (1), a secondary filtration unit (2), a purified water storage chamber (3), a gas reaction channel (4), a liquid reaction tower (5), and a waste liquid collection chamber (6). The primary filtration mechanism (1), the secondary filtration mechanism (2), and the purified water storage tank (3) are connected in sequence. The gas reaction channel (4), the liquid reaction tower (5), and the waste liquid collection tank (6) are connected in sequence. The primary filtration mechanism (1) and the secondary filtration mechanism (2) are respectively connected to the gas reaction channel (4). The primary filtration mechanism (1) is connected to the underground sewage transmission pipeline. The purified water storage tank (3) is equipped with a water outlet pipe (12). The end of the gas reaction channel (4) is connected to the purified gas supply pipeline. The lower end of the gas reaction channel (4) is provided with a first air inlet and a second air inlet. The first air inlet is connected to the primary filter mechanism (1) through the first air inlet pipeline (15), and the second air inlet is connected to the secondary filter mechanism (2) through the second air inlet pipeline (16). The gas reaction channel (4) is provided with a first partition (22), a second partition (26), a third partition (14), a first spiral baffle (24), and a second spiral baffle (27). The first partition (22), the second partition (26), and the third partition (14) are provided with air holes (23) around their circumference. A first gas purification chamber (25) is formed between the first partition (22) and the second partition (26). The first spiral baffle (24) is fixedly installed in the first gas purification chamber (25). A second gas purification chamber (13) is formed between the second partition (26) and the third partition (14). The second spiral baffle (27) is fixedly installed in the second gas purification chamber (13). The first air inlet is located in the first gas purification chamber (25), and the second air inlet is located in the second gas purification chamber (13). The front end of the gas reaction channel (4) is connected to the gas inlet of the liquid reaction tower (5), and the vertical height of the end of the gas reaction channel (4) is lower than that of the front end. The liquid reaction tower (5) is equipped with an arc-shaped baffle (18), a liquid spraying device, and a liquid recovery device. The arc-shaped baffle (18) is circumferentially spaced on the inner wall of the liquid reaction tower (5). The arc-shaped baffle (18) is arranged in a spiral upward shape, and the bottom arc-shaped baffle (18) is adapted to the position of the air inlet end of the liquid reaction tower (5). The liquid spraying device consists of a main pipeline (8), sub-pipelines (9), and spray heads (10). The end of the main pipeline (8) is connected to the reaction liquid supply pipeline, and the front end of the main pipeline (8) is connected to the sub-pipeline (9). The sub-pipeline (9) is circumferentially arranged at the front end of the main pipeline (8), and the spray heads (10) are evenly arranged on the sub-pipeline (9). The liquid recovery device consists of a liquid guide tray (19) and a waste liquid collection chamber (6). The upper surface of the liquid guide tray (19) is funnel-shaped, and a waste liquid outlet (20) is provided at the center of the liquid guide tray (19). The waste liquid outlet (20) is connected to the waste liquid collection chamber (6) via a waste liquid pipe (21), and the waste liquid collection chamber (6) is connected to a sewage pipe (17).

2. The intelligent sewage recycling system according to claim 1, characterized in that... The primary filtration unit (1) includes an aeration denitrification chamber, a phosphorus removal chamber, and a sedimentation chamber connected in sequence. The aeration denitrification chamber is equipped with a denitrification mixture, and the phosphorus removal chamber is equipped with an electrocoagulation device. The secondary filtration mechanism (2) includes a filtration chamber and a disinfection chamber connected in sequence. The output end of the disinfection chamber is connected to the purified water storage chamber (3).

3. The intelligent sewage recycling system according to claim 2, characterized in that... The denitrification mixture comprises sponge iron, sawdust, walnut shells, bentonite, and polyurethane, in the following weight proportions: 1-2 pieces of sponge iron; Wood chips 10-60; 10-60 walnut shells; Bentonite 1-5; Polyurethane 1-100.

4. The intelligent sewage recycling system according to claim 3, characterized in that... The denitrification mixture also includes ceramsite, bean pods, and wheat straw.

5. The intelligent sewage recycling system according to claim 1, characterized in that... The primary filtration mechanism (1) consists of a first water pump (7), a first-stage filtration mechanism, and a second-stage filtration mechanism. The first-stage filtration mechanism includes an AAO treatment unit and an MBR membrane tank unit. The AAO treatment unit includes an anoxic tank and an aerobic tank, which are connected in series. The aerobic tank and the MBR membrane tank unit form an integrated tank. The secondary filtration mechanism (2) includes a second water pump (11), a sedimentation tank and a microfiltration device, wherein a disinfectant is provided in the sedimentation tank.

6. The intelligent wastewater recycling system according to any one of claims 1-5, characterized in that... The gas supplied through the purified gas supply pipeline is ozone.

7. The intelligent wastewater recycling system according to any one of claims 1-5, characterized in that... The liquid supplied through the reaction solution supply pipeline is water.

8. The intelligent sewage recycling system according to any one of claims 1-5, characterized in that... The gas reaction channel (4) has an angle α of 0.35-5 degrees with the horizontal direction.

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