Efficient precipitation and concentration device for treating sludge water in waterworks

Abstract

The utility model discloses an efficient precipitation and concentration device for sludge water treatment in a waterworks, which relates to the technical field of tap water sludge water treatment and is sequentially provided with a coagulation reaction tank, a precipitation tank, a sludge pump, a high shear and a biological magnetic separator along the sludge water feeding direction. The coagulation reaction tank is composed of a T1 rapid mixing chamber, a T2 magnetic medium mixing chamber and a T3 coagulation reaction chamber, and meanwhile, the coagulation reaction tank is provided with a matched coagulant and flocculant dosing system; the sedimentation tank is in a form of a round upper part and a single lower part, an inclined pipe is additionally arranged in the sedimentation tank, and a four-scraping-arm form is adopted in the mud bucket. The efficient sedimentation and concentration device has the advantages of better treatment effect, short flocculation reaction flow, strong impact load resistance, low investment cost, small head loss and low magnetic seed loss; meanwhile, as a complete set of steel equipment, the device is high in intensification degree, skid-mounted, extremely small in occupied area and particularly suitable for waterworks without sludge water treatment facilities.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of tap water sludge water treatment technology, and specifically to a high -efficient precipitation concentration device for tap water plant sludge water treatment. BACKGROUND

[0002] At present, purification and protection of water resources have become the focus of global attention, however, in the process of water supply, a large amount of sludge water is generated in the treatment process of the water plant, which causes a series of environmental problems, how to effectively treat the sludge water and reduce its impact on the environment is the problem concerned in the current environmental protection engineering field, effective sludge water treatment process not only can solve the water quality problem, but also can help to improve the operation efficiency of the water plant. In the concentration and dewatering treatment process of the sludge water of the water plant in the market, the concentration process mainly includes gravity concentration tank and high-efficiency concentration tank, among which the gravity concentration tank has the advantages of low operation cost, no drug consumption and power loss, less facilities and equipment, convenient management and operation, strong impact load resistance and adaptability to high turbidity of raw water, but it has the disadvantages of large occupation area and high investment cost; the high-efficiency concentration tank has the advantages of small occupation area, low investment cost and good treatment effect, but according to the different used processes, it also has the problems of high operation cost, need to add PAC and PAM and other reagents, more consumables, high energy consumption, more facilities and equipment and inconvenient maintenance and management.

[0003] The prior art CN117482588A discloses a kind of high-efficiency concentration device for sludge water of water purification plant, and the technical scheme discloses "the present application relates to a kind of high-efficiency concentration device for sludge water of water purification plant, it includes the concentration tank and distribution tank being communicated, still includes the baffle and vertical guide vane being located in distribution tank below being set along distribution tank length direction, the side of distribution tank is fixedly provided with water outlet tank, and the side wall of water outlet tank away from distribution tank is provided with multiple water decanting weirs;The bottom of concentration tank is equipped with multiple sludge outlets, and each sludge outlet is equipped with a valve for controlling its opening and closing.The high-efficiency concentration device defined in the application can be built according to the needs of water purification plant, avoiding the problem of site limitation, relying on the concentration device provided by the application to form a mud treatment system with small occupation area, low energy consumption and low operation and maintenance, achieving reduced pollution discharge and reducing the load of urban sewage treatment; Compared with the traditional treatment process, it can effectively deal with the problem of unstable sludge concentration and varying sludge discharge of sludge water, and adjust through operation to concentrate, to ensure the effluent of recycled water and the sludge discharge effect of the bottom as much as possible."

[0004] Although the prior art has disclosed a kind of high-efficiency concentration device for sludge water of water purification plant, but still there are some deficiencies, specifically, in actual production operation process, because water outlet tank adopts orifice outflow form, and each orifice outflow needs to be consistent in ideal state, which needs to reduce orifice diameter to increase resistance, resulting in large equipment water head loss and potential risk of blockage, which increases operation and maintenance cost. Utility model content

[0005] The utility model discloses a high -efficient sedimentation concentration device of sewage treatment of waterworks, to solve the problem of prior art.

[0006] To realize above -mentioned purpose, the utility model provides the following technical scheme: a high -efficient sedimentation concentration device of sewage treatment of waterworks, the high -efficient sedimentation concentration device includes reaction pool, the reaction pool includes two T1 reaction pool, two T2 reaction pool and two T3 reaction pool, two T2 reaction pool is located between two T1 reaction pool, two T3 reaction pool is located T1 reaction pool one side, the both sides of T1 reaction pool is provided with sedimentation tank respectively, one side of sedimentation tank is provided with residual sludge tank, the T1 reaction pool top is installed with high shear machine, the T2 reaction pool top is installed with biological magnetic separation machine, and the reaction pool and sedimentation tank one side are installed with sludge pump, and the reaction pool and sedimentation tank top are installed with dosing system. Residual sludge collection system is used to collect and handle the sludge after deposition, and the high shear machine fully disperses the mixed flocculation of magnetic powder and sludge, improves the mixing and shearing efficiency, and the biological magnetic separation machine further removes the suspended solids and pollutants in water through magnetic separation technology, ensures that the water quality reaches the standard, and the sludge pump is responsible for conveying the sludge in the sedimentation tank to the subsequent processing unit, realizes the effective management and disposal of sludge.

[0007] The T1 reaction pool is installed with mixing agitator one, the T2 reaction pool is installed with mixing agitator two, and the T3 reaction pool is installed with reaction agitator, the material of the stirring shaft and paddle of mixing agitator one, mixing agitator two and reaction agitator is stainless steel, the T1 reaction pool is fast mixing chamber, the T2 reaction pool is magnetic medium mixing chamber, and the T3 reaction pool is flocculation reaction pool, and the T1 reaction pool, T2 reaction pool and T3 reaction pool adopt steel pool body. The main role of mixing agitator one is fast mixing, mixing agitator two is used for the mixing process of magnetic medium, and reaction agitator is used for the stirring work of flocculation reaction, the T2 reaction pool removes the suspended solids in water by the characteristics of magnetic medium, and the main function of the T3 reaction pool is that suspended particles are gathered to form flocculation by stirring, which is convenient for subsequent separation treatment.

[0008] The T1 reaction tank is provided with a T1 reaction tank water inlet pipe on one side, the T1 reaction tank water inlet pipe is provided with a water inlet main pipe on one side, the water inlet main pipe is connected with the side wall of the sedimentation tank, a water inlet electromagnetic flowmeter is installed on the T1 reaction tank water inlet pipe, a coagulation tank dosing pipe is installed on one side of the T1 reaction tank, a coagulation tank vent pipe one is installed on the other side of the T1 reaction tank, a coagulation tank vent pipe two is installed on the other side of the T2 reaction tank, a flocculant dosing pipe is installed on one side of the T3 reaction tank, and a magnetic coagulation tank vent pipe is installed on the other side of the T3 reaction tank. The T1 reaction tank water inlet pipe is responsible for introducing water into the T1 reaction tank, the water inlet electromagnetic flowmeter can monitor and record water flow data in real time, the coagulation tank dosing pipe is used to add flocculant to the water to promote the coagulation process, and the coagulation tank vent pipe one, the coagulation tank vent pipe two and the magnetic coagulation tank vent pipe are used to discharge water in the tank, facilitating equipment maintenance and repair.

[0009] The sedimentation tank adopts an upper circular and lower single hopper structure, a mud scraper and a mud level meter are installed in the sedimentation tank, the mud scraper is connected with the upper inner wall of the sedimentation tank, the stirring shaft of the mud scraper is provided with a protective sleeve, the water upper part of the mud scraper is made of carbon steel, the water under part of the mud scraper is made of stainless steel, an inclined pipe is arranged in the middle of the sedimentation tank, three groups of overflow weirs are arranged on the upper side of the inclined pipe, a sedimentation tank water outlet groove is arranged on one side of the overflow weirs, a sedimentation tank water outlet pipe is arranged on the other side of the sedimentation tank, a sludge backflow pump and a residual sludge pump are installed on one side of the sedimentation tank, and a sludge dewatering flocculant dosing pipe is installed on one side of the sedimentation tank. The mud scraper is used for scraping the floc with magnetic powder, the mud is pumped out through the mud pump, the mud level meter is used for monitoring the mud level in the sedimentation tank, the inclined pipe helps to accelerate the sedimentation process of the sludge, the overflow weirs can effectively control the water flow, ensure that the water level in the sedimentation tank is kept in an ideal state, and the sludge backflow pump and the residual sludge pump can recycle or discharge the settled sludge.

[0010] The pump group of the high-efficiency sedimentation and concentration device comprises three mud pumps, three sludge backflow pumps and four residual sludge pumps, the three mud pumps are located on one side of a residual sludge tank, a sludge tank mud outlet pipe and a residual sludge pipe are installed on one side of the residual sludge tank, the other side of the residual sludge pipe is connected with the T2 reaction tank, a pressure test exhaust valve is installed on the residual sludge pipe, the three sludge backflow pumps are located on one side of the sedimentation tank, a sedimentation tank mud outlet pipe is installed at one end of the sludge backflow pump, the other end of the sedimentation tank mud outlet pipe is connected with the T2 reaction tank, a backflow sludge electromagnetic flowmeter is installed on the pipeline connected with the sludge backflow pump, a residual sludge electromagnetic flowmeter is installed on the pipeline connected with the residual sludge pump, and a flushing pipe is installed on one side of the biological magnetic separator. The backflow sludge electromagnetic flowmeter is used for controlling the flow of backflow sludge, the residual sludge electromagnetic flowmeter is used for monitoring and controlling the discharge of residual sludge, and the residual sludge flows into the residual sludge tank through the residual sludge pipe for sedimentation.

[0011] The inside of the residual sludge tank is provided with a sludge mixer, the inside upper wall of the residual sludge tank is provided with a sludge tank center flow guide cylinder, one side of the sludge tank center flow guide cylinder is provided with a spiral machine sludge inlet pipe, a spiral machine water outlet pipe and a residual sludge pipe, the other side of the spiral machine water outlet pipe is connected with a spiral machine sludge inlet pump, the spiral machine water outlet pipe is provided with a sludge backflow pipe one and a sludge backflow pipe two, one side of the sludge backflow pipe one and the sludge backflow pipe two is provided with a backflow sludge electromagnetic flowmeter, the inside upper wall of the residual sludge tank is provided with a sludge tank water outlet groove, the sludge tank water outlet groove is connected with a sedimentation tank water outlet groove, the inside lower wall of the residual sludge tank is provided with a sludge tank hopper plate, the residual sludge tank is internally provided with an electrode type liquid level switch, and one side of the residual sludge tank is provided with a sludge tank overflow port. The sludge mixer ensures uniform mixing of the sludge, the sludge tank center flow guide cylinder better guides the sludge flow, the spiral machine sludge inlet pump ensures the continuity of the whole sludge treatment process, the backflow sludge electromagnetic flowmeter is used for detecting the concentration of the backflow sludge, the sludge tank hopper plate helps the sludge discharge, and the electrode type liquid level switch is used for monitoring the liquid level height in the sludge tank.

[0012] One side of the sedimentation tank is provided with a vertical flow type dropwell, the coagulation tank vent pipe one, the coagulation tank vent pipe two and the magnetic coagulation tank vent pipe directly converge into the vertical flow type dropwell through pipelines, one side of the residual sludge tank is provided with a sludge tank vent pipe, the sludge tank vent pipe is connected with a drainage ditch, the drainage ditch is provided with a flushing pipe, and the connection position of the drainage ditch and the vertical flow type dropwell is provided with a grating floor drain. The sludge tank vent pipe is used for discharging the sludge in the residual sludge tank, the flushing pipe is used for periodically flushing the drainage ditch to prevent blockage, and the grating floor drain is used for intercepting large-particle pollutants to prevent pipeline blockage.

[0013] The sedimentation tank water outlet pipe is connected with the water inlet main pipe through a pipeline, the water inlet main pipe is provided with a water inlet switch electric valve, and the water inlet main pipe is provided with a sludge inlet sludge flowmeter. When it is detected that the water quality is substandard, the water outlet of the sedimentation tank enters the next cycle deep treatment by adjusting the water inlet switch electric valve, and the sludge inlet sludge flowmeter is used for monitoring the sludge concentration in the sludge discharge water.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The high-efficiency sedimentation and concentration device can fully remove TP, SS and COD in a relatively short flocculation reaction process by combining the magnetic coagulation technology and adding the inclined pipe in the sedimentation tank, and the inclined pipe and other facilities provide good hydraulic conditions, so that the device has good adaptability to impact load, temperature change and external interference.

[0016] 2. The high-efficiency sedimentation concentration device combines a high shear machine with a biomagnetic separator, so that the mixed floc formed by the magnetic powder and sludge can be fully dispersed, the magnetic powder is efficiently recovered, and the loss rate of magnetic seed is reduced; in addition, the number of pumps used in the whole device is small, the residual sludge after magnetic separation flows by gravity, the total water head loss of the device is small, and the energy consumption is low.

[0017] 3. The high-efficiency sedimentation concentration device is highly automated in the whole process of sludge water inflow, dosing, coagulation reaction, sedimentation, separation of magnetic powder and sludge, recovery of magnetic powder, further dehydration of residual sludge, and external delivery, can be directly connected to the original tail water outflow part of the water plant, and reduces the management and maintenance cost.

[0018] 4. The high-efficiency sedimentation concentration device is a high-intensity and productized steel complete equipment, and the front adjusting pool and the dosing box can be transformed according to the original clear water pool of the water plant, so that the device has the advantages of small occupied area and low investment cost, and has practical significance for large-scale promotion and industrial application. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 is a flow chart of the utility model;

[0020] Figure 2 is a general plan view of the utility model;

[0021] Figure 3 is a lower pipeline plan view of the utility model;

[0022] Figure 4 is an upper pipeline plan view of the utility model;

[0023] Figure 5 is the utility model Figure 2 is a sectional view in A-A direction of the utility model;

[0024] Figure 6 is the utility model Figure 2 is a sectional view in B-B direction of the utility model;

[0025] Figure 7 is the utility model Figure 2 is a sectional view in C-C direction of the utility model;

[0026] Figure 8 is the utility model Figure 2 is a sectional view in D-D direction of the utility model;

[0027] Figure 9 is the utility model Figure 2 is a sectional view in E-E direction of the utility model.

[0028] In the figure: 1, T1 reaction tank; 11, mixing blender one; 2, T2 reaction tank; 21, mixing blender two; 3, T3 reaction tank; 31, reaction blender; 4, sedimentation tank; 41, mud scraper; 42, inclined pipe; 43, overflow weir; 44, sedimentation tank outlet; 5, high shear machine; 6, biological magnetic separator; 71, screw machine inlet pump; 72, sludge backflow pump; 73, excess sludge pump; 8, excess sludge tank; 81, sludge mixer; 82, sludge tank outlet; 83, sludge tank hopper plate; 84, sludge tank center guide cylinder; 91, mud level meter; 92, electrode type liquid level switch; 93, excess sludge electromagnetic flowmeter; 94, backflow sludge electromagnetic flowmeter; 95, inlet electromagnetic flowmeter; 96, inlet sludge flowmeter; 97, water inlet switching electric valve; 98, grid floor drain; 101, water inlet main pipe; 102, sludge tank outlet pipe; 103, sedimentation tank outlet pipe; 104, flushing pipe; 105, screw machine inlet pipe; 106, screw machine outlet pipe; 107, sludge backflow pipe one; 108, sludge backflow pipe two; 109, excess sludge pipe; 1010, pressure test exhaust valve; 1011, sedimentation tank outlet pipe; 1012, coagulation tank dosing pipe; 1013, flocculant dosing pipe; 1014, sludge dewatering flocculant dosing pipe; 1015, sludge tank overflow; 1016, T1 reaction tank inlet pipe; 1017, sludge tank vent pipe; 1018, coagulation tank vent pipe one; 1019, coagulation tank vent pipe two; 1020, magnetic coagulation tank vent pipe; 1021, vertical flow type dropwell. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0030] Please refer to Figures 1-9The utility model provides technical scheme: a high -efficient sedimentation concentration device of sewage treatment of waterworks, high -efficient sedimentation concentration device includes reaction pool, reaction pool includes two T1 reaction pool 1, two T2 reaction pool 2 and two T3 reaction pool 3, two T2 reaction pool 2 is located between two T1 reaction pool 1, two T3 reaction pool 3 is located T1 reaction pool 1 one side, and the both sides of T1 reaction pool 1 are provided with sedimentation tank 4, and one side of sedimentation tank 4 is provided with residual sludge tank 8, and high shear machine 5 is installed on T1 reaction pool 1 top, and biological magnetic separation machine 6 is installed on T2 reaction pool 2 top, and reaction pool and sedimentation tank 4 one side are installed with sludge pump, and reaction pool and sedimentation tank 4 top are installed with dosing system. Residual sludge collection system is used to collect and handle the sludge after deposition, and high shear machine 5 fully disperses the mixed flocculation of magnetic powder and sludge, improves mixing and shearing efficiency, and biological magnetic separation machine 6 further removes suspended solids and pollutants in water through magnetic separation technology, ensures that the water quality reaches the standard, and sludge pump is responsible for conveying the sludge in sedimentation tank 4 to subsequent processing unit, realizes the effective management and disposal of sludge.

[0031] T1 reaction pool 1 is provided with mixing agitator one 11, T2 reaction pool 2 is provided with mixing agitator two 21, and T3 reaction pool 3 is provided with reaction agitator 31, and the material of the stirring shaft and paddle of mixing agitator one 11, mixing agitator two 21 and reaction agitator 31 is 304 stainless steel, T1 reaction pool 1 is a rapid mixing chamber, T2 reaction pool 2 is a magnetic medium mixing chamber, and T3 reaction pool 3 is a flocculation reaction tank, and T1 reaction pool 1, T2 reaction pool 2 and T3 reaction pool 3 adopt steel tank body. The main role of mixing agitator one 11 is rapid mixing, mixing agitator two 21 is used for the mixing process of magnetic medium, and reaction agitator 31 is used for the stirring work of flocculation reaction, T2 reaction pool 2 removes suspended solids in water by the characteristics of magnetic medium, and the main function of T3 reaction pool 3 is to make suspended particles gather to form flocculation by stirring, which is convenient for subsequent separation treatment.

[0032] The T1 reaction tank 1 is installed with a T1 reaction tank water inlet pipe 1016 on one side, the T1 reaction tank water inlet pipe 1016 is installed with a water inlet main pipe 101 on one side, the water inlet main pipe 101 is connected with the side wall of the sedimentation tank 4, the T1 reaction tank water inlet pipe 1016 is installed with a water inlet electromagnetic flowmeter 95, the T1 reaction tank 1 is installed with a coagulation tank dosing pipe 1012 on one side, the T1 reaction tank 1 is installed with a coagulation tank vent pipe one 1018 on the other side, the T2 reaction tank 2 is installed with a coagulation tank vent pipe two 1019 on the other side, the T3 reaction tank 3 is installed with a flocculant dosing pipe 1013 on one side, and the T3 reaction tank 3 is installed with a magnetic coagulation tank vent pipe 1020 on the other side. The T1 reaction tank water inlet pipe 1016 is responsible for introducing water into the T1 reaction tank 1, the water inlet electromagnetic flowmeter 95 can monitor and record water flow data in real time, the coagulation tank dosing pipe 1012 is used to add flocculants to the water to promote the coagulation process, and the coagulation tank vent pipe one 1018, the coagulation tank vent pipe two 1019 and the magnetic coagulation tank vent pipe 1020 are used to discharge water in the tank, which is convenient for equipment maintenance and repair.

[0033] The sedimentation tank 4 adopts an upper circular and lower single hopper structure, the sedimentation tank 4 is installed with a mud scraper 41 and a mud level meter 91, the mud scraper 41 is connected with the upper inner wall of the sedimentation tank 4, the stirring shaft of the mud scraper 41 is attached with a protective sleeve, the upper water part of the mud scraper 41 is made of carbon steel, the underwater part of the mud scraper 41 is made of 304 stainless steel, a slanted pipe 42 is arranged in the middle of the sedimentation tank 4, three groups of overflow weirs 43 are arranged on the upper side of the slanted pipe 42, a sedimentation tank water outlet groove 44 is arranged on one side of the overflow weirs 43, a sedimentation tank water outlet pipe 1011 is arranged on the other side of the sedimentation tank 4, a sludge backflow pump 72 and a residual sludge pump 73 are installed on one side of the sedimentation tank 4, and a sludge dewatering flocculant dosing pipe 1014 is installed on one side of the sedimentation tank 4. The mud scraper 41 is used to scrape off the flocculation body with magnetic powder, which is pumped out through the stacking machine inlet mud pump 71, the mud level meter 91 is used to monitor the mud level in the sedimentation tank 4, the slanted pipe 42 helps to accelerate the sedimentation process of the sludge, the overflow weirs 43 can effectively control the water flow to ensure that the water level in the sedimentation tank 4 remains in an ideal state, and the sludge backflow pump 72 and the residual sludge pump 73 can recycle or discharge the settled sludge.

[0034] The pump set of the high-efficiency sedimentation concentration device includes three stacked screw sludge inlet pumps 71, three sludge backflow pumps 72 and four residual sludge pumps 73. The three stacked screw sludge inlet pumps 71 are located on one side of the residual sludge tank 8. The residual sludge tank 8 is provided with a sludge tank sludge outlet pipe 102 and a residual sludge pipe 109 on one side. The residual sludge pipe 109 is connected to the T2 reaction tank 2 on the other side. A pressure test exhaust valve 1010 is installed on the residual sludge pipe 109. The three sludge backflow pumps 72 are located on one side of the sedimentation tank 4. The sludge backflow pump 72 is provided with a sedimentation tank sludge outlet pipe 103 on one end. The other end of the sedimentation tank sludge outlet pipe 103 is connected to the T2 reaction tank 2. The pipeline connected to the sludge backflow pump 72 is provided with a backflow sludge electromagnetic flowmeter 94. The residual sludge pump 73 is connected to the sedimentation tank sludge outlet pipe 103 on one end. The pipeline connected to the residual sludge pump 73 is provided with a residual sludge electromagnetic flowmeter 93. The biological magnetic separator 6 is provided with a flushing pipe 104 on one side. The backflow sludge electromagnetic flowmeter 94 is used to control the flow of backflow sludge. The residual sludge electromagnetic flowmeter 93 is used to monitor and control the discharge of residual sludge. The residual sludge flows into the residual sludge tank 8 through the residual sludge pipe 109 and settles.

[0035] The residual sludge tank 8 is provided with a sludge mixer 81 on the inside. The residual sludge tank 8 is provided with a sludge tank center flow guide cylinder 84 on the upper inner wall. The sludge tank center flow guide cylinder 84 is provided with a stacked screw sludge inlet pipe 105, a stacked screw water outlet pipe 106 and a residual sludge pipe 109 on one side. The other side of the stacked screw water outlet pipe 106 is connected to the stacked screw sludge inlet pump 71. The stacked screw water outlet pipe 106 is provided with a sludge backflow pipe one 107 and a sludge backflow pipe two 108. The sludge backflow pipe one 107 and the sludge backflow pipe two 108 are provided with a backflow sludge electromagnetic flowmeter 94 on one side. The residual sludge tank 8 is provided with a sludge tank water outlet groove 82 on the upper inner wall. The sludge tank water outlet groove 82 is connected to the sedimentation tank water outlet groove 44. The residual sludge tank 8 is provided with a sludge tank hopper plate 83 on the lower inner wall. The residual sludge tank 8 is provided with an electrode type liquid level switch 92. The residual sludge tank 8 is provided with a sludge tank overflow port 1015 on one side. The function of the sludge mixer 81 is to ensure uniform mixing of the sludge. The function of the sludge tank center flow guide cylinder 84 is to better guide the flow of sludge. The stacked screw sludge inlet pump 71 ensures the continuity of the entire sludge treatment process. The backflow sludge electromagnetic flowmeter 94 is used to detect the concentration of backflow sludge. The sludge tank hopper plate 83 helps to discharge sludge. The electrode type liquid level switch 92 is used to monitor the liquid level in the sludge tank.

[0036] The vertical flow type drop well 1021 is installed on one side of the sedimentation tank 4, the coagulation tank emptying pipe 1018, the coagulation tank emptying pipe 1019 and the magnetic coagulation tank emptying pipe 1020 are directly connected to the vertical flow type drop well 1021 through pipes, the sludge tank emptying pipe 1017 is installed on one side of the residual sludge tank 8, the sludge tank emptying pipe 1017 is connected to the drainage ditch, the flushing pipe 104 is arranged in the drainage ditch, and the grid floor drain 98 is arranged at the connection position of the drainage ditch and the vertical flow type drop well 1021. The sludge tank emptying pipe 1017 is used for discharging sludge in the residual sludge tank 8, the flushing pipe 104 is used for periodically flushing the drainage ditch to prevent blockage, and the grid floor drain 98 is used for intercepting large-particle pollutants to prevent pipe blockage.

[0037] The sedimentation tank outlet pipe 1011 is connected to the water inlet main pipe 101 through a pipe, the water inlet switch electric valve 97 is installed on the water inlet main pipe 101, and the sludge flow meter 96 is installed on the water inlet main pipe 101. When it is detected that the water quality is substandard, the water outlet of the sedimentation tank 4 enters the next cycle deep treatment by adjusting the water inlet switch electric valve 97, and the sludge flow meter 96 is used for monitoring the sludge concentration in the sludge discharge water.

[0038] In a preferred embodiment, the diameter of the sludge scraper 41 is 5.0 m, the peripheral speed is 1.5-3.5 m / s, the shaft of the sludge scraper 41 is provided with a protective sleeve, the water surface part is made of carbon steel, and the underwater part is made of SS304.

[0039] In a preferred embodiment, the sludge level meter 91 has a measurement range of 0-5 m.

[0040] In a preferred embodiment, the sedimentation tank 4 is provided with a water outlet turbidity meter to monitor whether the water quality of the water outlet meets the standard.

[0041] In a preferred embodiment, the sludge pump 71 of the sludge scraper has a flow rate Q of 15 m3 / h and a lift H of 20 m, adopts a two-use-one-backup form, and the pump body is made of steel ultra-high molecular weight polyethylene.

[0042] In a preferred embodiment, the sludge pump 72 has a flow rate Q of 15 m3 / h and a lift H of 15 m, is a variable frequency motor, adopts a two-use-one-backup form, and the pump body is made of steel ultra-high molecular weight polyethylene.

[0043] In a preferred embodiment, the residual sludge pump 73 has a flow rate Q of 25 m3 / h and a lift H of 15 m, is a variable frequency motor, adopts a two-use-one-backup form, and the pump body is made of steel ultra-high molecular weight polyethylene.

[0044] In a preferred embodiment, the material of the high shear machine 5 and the biological magnetic separator 6 is SS304.

[0045] In a preferred embodiment, a screw press inlet water electromagnetic flow meter 95 is installed on the screw press inlet pipe 105 to monitor the amount of sludge entering the screw press for dewatering.

[0046] In a preferred embodiment, a full stainless steel flange diaphragm pressure gauge is provided at the outlet of the sludge return pump 72 and the outlet of the residual sludge pump 73 to monitor the water pressure at the corresponding positions.

[0047] In a preferred embodiment, an electrode type liquid level switch 92 is provided in the sludge tank 8 to monitor the liquid level in the sludge tank.

[0048] For example, the design treatment capacity of the sludge water to be treated in a certain town water plant is 12000m 3 / d. According to the field experiment, the SS of the sludge water in the clarifier is 1300-1600mg / L, the SS of the bottom drainage is 500-700mg / L, and the SS of the backwash water is 122-189mg / L. The design dry sludge capacity is 3.8t / d, and the maximum dry sludge capacity is 4.9t / d. The treatment target is to make the supernatant of the thickening tank meet the requirement of SS≤30mg / L in the new edition of the discharge standard, and after meeting the standard, it can be discharged into the rainwater network. The solid content of the dewatered sludge cake is not less than 25%.

[0049] According to the treatment requirement, the above-mentioned high-efficiency sedimentation and concentration device for sludge water in a water plant is used. Since the single set treatment capacity is 6000m 3 / d, two sets of high-efficiency sedimentation and concentration devices are used to carry out high-efficiency sedimentation and concentration on the sludge water and backwash water. After treatment, the supernatant is discharged after meeting the requirement of SS≤30mg / L. After concentration, the sludge is sent to the sludge dewatering machine (2 sets) for pressure filtration, and the water content of the sludge is further reduced to about 75% after dewatering.

[0050] The working principle of the utility model is as follows: firstly, the sludge water from the water plant enters T1 reaction tank 1 through the water inlet main pipe 101, the coagulant and flocculant are added into T1 reaction tank 1 through the coagulant adding pipe 1012 of the coagulation tank, the mixed stirrer 11 is started to stir the sludge water, so that the reagent and the sludge water are fully mixed and primary coagulation is realized, then the sludge water enters T2 reaction tank 2, the magnetic powder and the returned sludge are added into the sludge water, the mixed stirrer 21 fully mixes the sludge water and the magnetic powder, then the sludge water mixed with the magnetic powder enters T3 reaction chamber 3, and the flocculation reaction is carried out by the stirring of the reaction stirrer 31 to form flocs.

[0051] The sludge water flocculated in the T3 reaction tank 3 enters the sedimentation tank 4. Since the specific gravity of the magnetic powder is large, the specific gravity of the flocculation mixed with the magnetic powder is increased, the flocculation mixed with the magnetic powder can be quickly settled, and the sludge water separation effect is enhanced, the purpose of high-efficiency decontamination and rapid settlement is achieved, the inclined pipe 42 in the sedimentation tank 4 reduces the flow radius of the sedimentation tank 4, increases the flow Froude number, improves the sedimentation efficiency through the shallow pool principle, the flocculation with the magnetic powder is quickly settled in the sedimentation tank 4, is scraped by the mud scraper 41, and is pumped out through the stacking screw machine and the mud pump 71.

[0052] The pumped sludge is directly returned to the T2 reaction tank 2 in part, and the other part passes through the high shear machine 5, the mixed flocculation of the magnetic powder and the sludge is fully dispersed, the sludge enters the biological magnetic separation machine 6, the magnetic powder in the biological magnetic separation machine 6 is separated and recovered, enters the T2 reaction tank 2, participates in the coagulation of the new round of sludge water, and the remaining sludge is pumped into the residual sludge tank 8 through the residual sludge pump 73, is dewatered through the stacking screw machine, and is externally sent.

[0053] It is obvious for those skilled in the art that the utility model is not limited to the details of the above-mentioned exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic characteristics of the utility model. Therefore, no matter from which point, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims instead of the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model. Any reference signs in the claims should not be regarded as limiting the involved claims.

Claims

1. A high-efficiency sedimentation and concentration device for treating sludge discharge water from a waterworks, characterized in that: The high-efficiency precipitation concentration device comprises a reaction tank, the reaction tank comprises two T1 reaction tanks (1), two T2 reaction tanks (2) and two T3 reaction tanks (3), the two T2 reaction tanks (2) are located between the two T1 reaction tanks (1), the two T3 reaction tanks (3) are located on one side of the T1 reaction tank (1), the two sides of the T1 reaction tank (1) are respectively provided with a precipitation tank (4), one side of the precipitation tank (4) is provided with a residual sludge tank (8), a high shear machine (5) is installed above the T1 reaction tank (1), a biological magnetic separation machine (6) is installed above the T2 reaction tank (2), a sludge pump is installed on one side of the reaction tank and the precipitation tank (4), and a dosing system is installed above the reaction tank and the precipitation tank (4).

2. The high-efficiency sedimentation and concentration device for sludge water treatment in a waterworks according to claim 1, characterized in that: The T1 reaction tank (1) is provided with a mixing stirrer (11), the T2 reaction tank (2) is provided with a mixing stirrer (21), and the T3 reaction tank (3) is provided with a reaction stirrer (31), the stirring shafts and paddle blades of the mixing stirrer (11), the mixing stirrer (21) and the reaction stirrer (31) are made of 304 stainless steel, the T1 reaction tank (1) is a rapid mixing chamber, the T2 reaction tank (2) is a magnetic medium mixing chamber, and the T3 reaction tank (3) is a flocculation reaction tank, and the T1 reaction tank (1), the T2 reaction tank (2) and the T3 reaction tank (3) adopt a steel tank body.

3. The high-efficiency sedimentation and concentration device for sludge water treatment in a waterworks according to claim 2, characterized in that: One side of the T1 reaction tank (1) is provided with a T1 reaction tank water inlet pipe (1016), one side of the T1 reaction tank water inlet pipe (1016) is provided with a water inlet main pipe (101), the water inlet main pipe (101) is connected with the side wall of the precipitation tank (4), the T1 reaction tank water inlet pipe (1016) is provided with a water inlet electromagnetic flowmeter (95), one side of the T1 reaction tank (1) is provided with a coagulation tank dosing pipe (1012), the other side of the T1 reaction tank (1) is provided with a coagulation tank vent pipe (1018), the other side of the T2 reaction tank (2) is provided with a coagulation tank vent pipe (1019), one side of the T3 reaction tank (3) is provided with a flocculant dosing pipe (1013), and the other side of the T3 reaction tank (3) is provided with a magnetic coagulation tank vent pipe (1020).

4. The high-efficiency sedimentation and concentration device for sludge water treatment in a waterworks according to claim 3, characterized in that: The sedimentation tank (4) adopts the upper down round single hopper structure, the mud scraper (41) and the mud level meter (91) are installed in the sedimentation tank (4), the mud scraper (41) is connected with the inner wall of the upper side of the sedimentation tank (4), the stirring shaft of the mud scraper (41) is attached with a protective sleeve, the upper water part of the mud scraper (41) is made of carbon steel, the underwater part of the mud scraper (41) is made of 304 stainless steel, the inclined pipe (42) is arranged in the middle of the sedimentation tank (4), three groups of overflow weirs (43) are arranged on the upper side of the inclined pipe (42), the sedimentation tank water outlet groove (44) is arranged on one side of the overflow weir (43), the sedimentation tank water outlet pipe (1011) is arranged on the other side of the sedimentation tank (4), the sludge backflow pump (72) and the residual sludge pump (73) are installed on one side of the sedimentation tank (4), and the sludge dewatering flocculant dosing pipe (1014) is installed on one side of the sedimentation tank (4).

5. The high-efficiency sedimentation and concentration device for sludge water treatment in a waterworks according to claim 4, characterized in that: The pump group of the high-efficiency sedimentation and concentration device comprises three stacked screw mud inlet pumps (71), three sludge backflow pumps (72) and four residual sludge pumps (73), three stacked screw mud inlet pumps (71) are located on one side of the residual sludge tank (8), the sludge tank mud outlet pipe (102) and the residual sludge pipe (109) are installed on one side of the residual sludge tank (8), the other side of the residual sludge pipe (109) is connected with the T2 reaction tank (2), the pressure test exhaust valve (1010) is installed on the residual sludge pipe (109), three sludge backflow pumps (72) are located on one side of the sedimentation tank (4), the sedimentation tank mud outlet pipe (103) is installed at one end of the sludge backflow pump (72), the other end of the sedimentation tank mud outlet pipe (103) is connected with the T2 reaction tank (2), the backflow sludge electromagnetic flowmeter (94) is installed on the pipeline connected with the sludge backflow pump (72), one end of the residual sludge pump (73) is connected with the sedimentation tank mud outlet pipe (103), the residual sludge electromagnetic flowmeter (93) is installed on the pipeline connected with the residual sludge pump (73), and the flushing pipe (104) is installed on one side of the biological magnetic separator (6).

6. The high-efficiency sedimentation and concentration device for sludge water treatment in a waterworks according to claim 5, characterized in that: The inside of the residual sludge tank (8) is provided with a sludge mixer (81), and the inside wall of the upper side of the residual sludge tank (8) is provided with a sludge tank center flow guide cylinder (84), one side of the sludge tank center flow guide cylinder (84) is provided with a spiral machine sludge inlet pipe (105), a spiral machine water outlet pipe (106) and a residual sludge pipe (109), the other side of the spiral machine water outlet pipe (106) is connected with a spiral machine sludge inlet pump (71), the spiral machine water outlet pipe (106) is provided with a sludge backflow pipe one (107) and a sludge backflow pipe two (108), one side of the sludge backflow pipe one (107) and the sludge backflow pipe two (108) is provided with a backflow sludge electromagnetic flowmeter (94), the inside wall of the upper side of the residual sludge tank (8) is provided with a sludge tank water outlet groove (82), the sludge tank water outlet groove (82) is connected with a sedimentation tank water outlet groove (44), the lower side of the inside wall of the residual sludge tank (8) is provided with a sludge tank hopper plate (83), the residual sludge tank (8) is provided with an electrode type liquid level switch (92), and one side of the residual sludge tank (8) is provided with a sludge tank overflow port (1015).

7. The high-efficiency sedimentation and concentration device for sludge water treatment in a waterworks according to claim 6, characterized in that: One side of the sedimentation tank (4) is provided with a vertical flow type drop well (1021), the coagulation tank vent pipe one (1018), the coagulation tank vent pipe two (1019) and the magnetic coagulation tank vent pipe (1020) are directly connected with the vertical flow type drop well (1021) through pipelines, one side of the residual sludge tank (8) is provided with a sludge tank vent pipe (1017), the sludge tank vent pipe (1017) is connected with a drainage ditch, the drainage ditch is provided with a flushing pipe (104), and the connection position of the drainage ditch and the vertical flow type drop well (1021) is provided with a grating floor drain (98).

8. The high-efficiency sedimentation and concentration device for sludge water treatment in a waterworks according to claim 7, characterized in that: The sedimentation tank water outlet pipe (1011) is connected with the water inlet main pipe (101) through a pipeline, the water inlet main pipe (101) is provided with a water inlet switching electric valve (97), and the water inlet main pipe (101) is provided with a sludge flowmeter (96).

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