CN210796140U - Domestic sewage treatment device - Google Patents
Domestic sewage treatment device Download PDFInfo
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- CN210796140U CN210796140U CN201921872360.5U CN201921872360U CN210796140U CN 210796140 U CN210796140 U CN 210796140U CN 201921872360 U CN201921872360 U CN 201921872360U CN 210796140 U CN210796140 U CN 210796140U
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Abstract
The utility model relates to a domestic sewage treatment device, which comprises an adjusting tank, an anaerobic tank, an anoxic tank, a buffer function tank, an aerobic tank, a sedimentation tank, a filtering tank and a clean water tank which are connected in sequence; the anaerobic tank is internally provided with three water outlets which are respectively connected to the anaerobic tank, the anoxic tank and the regulating tank; the flow channel of the water equalizing tank is provided with a U-shaped water distribution weir crest, and the U-shaped water distribution weir crest is provided with a depth positioning plate; the anoxic tank, the aerobic tank and the sedimentation tank are provided with reflux systems; the reflux system of the anoxic tank is a gas stripping reflux device and is connected to the anaerobic tank; the reflux system of the aerobic tank is a gas stripping reflux device and is connected to the anoxic tank; and the outlet reflux system of the sedimentation tank refluxes the bottom of the anaerobic tank through a water pump. The utility model discloses strengthen the preliminary treatment of dimension steady system, set up the biochemical filler carrier that is suitable for, increase microbial activity, homogenization sewage ratio improves each link sewage purification treatment efficiency, reduces the electrical equipment and uses.
Description
Technical Field
The utility model belongs to the technical field of water treatment facilities technique and specifically relates to a domestic sewage treatment device.
Background
Village and town sewage treatment starts just in China, and the construction of sewage treatment facilities lags behind the economic development speed. By 2016, the proportion of the built towns for treating the distributed sewage nationwide is 52.64%, namely 18099 built towns exist nationwide, wherein 13028 built towns do not have sewage treatment facilities, and less than half of the built sewage treatment facilities can still normally operate; the administrative village for treating the dispersed sewage accounts for 20 percent. There are still a large number of regional distributed sewage treatment facilities that are in the clear.
Considering the factors of huge construction cost, insufficient rural management capacity and the like of distributed sewage treatment, the overall realization of the distributed sewage treatment still needs a long time of effort according to the treatment process of overseas developed countries at present. At present, rural sewage treatment in areas with developed economy, sensitive ecological environment, dense population and the like is mainly promoted on the basis of greatly improving the sewage treatment rate of the constructed towns, and rural distributed sewage treatment is promoted in a echelon mode.
The total amount of sewage in villages and towns is large in a macroscopic view, but the water amount is small and the daily change is large as villages or individual farmers. The sewage quality and the discharge law are greatly different from those of cities, and the rural water pollution treatment is different from the urban sewage treatment due to the technical and economic condition limitation of the rural areas.
Firstly, rural population in China is scattered, scattered households, united households and natural villages account for a large proportion, are limited by natural conditions, are difficult to collect uniformly and then process intensively, and are suitable for on-site processing;
secondly, rural technology is weak, and economic bearing capacity is weak;
thirdly, due to the large difference of different areas in China, the sewage discharge characteristics of different rural areas are greatly different due to different areas and environmental conditions, and the requirements on the sewage treatment technology are different;
aiming at the characteristics of distributed sewage and economic bearing capacity, under the support of the national strong policy, the method is gradually applied to the industry system
Under perfect conditions, a set of sewage treatment equipment with strong pertinence, mature process, simple application, convenient installation, simple and convenient operation and maintenance is provided, the development of the industry is greatly promoted, and the market application prospect is very good.
The prior application equipment has the defects that:
(1) the equipment technology is widely and unstably applied: at present, the common integrated sewage treatment main processes comprise activated sludge, contact oxidation, an A/O (anoxic/oxic) process, MBR (membrane bioreactor), SBR (sequencing batch reactor) and the like, but the applied processes are all the miniaturization of municipal processes and do not completely combine the actual treatment requirements of dispersed sewage.
(2) The equipment investment cost is high: the investment cost per ton of integrated equipment is 3500-7000 yuan, the smaller the scale, the higher the unit cost, and the smaller the scale, the higher the unit cost is, the smaller the scale is, the smaller the unit cost is, and the.
(3) The equipment running cost is high: stirring, aeration, lifting, backflow, sludge discharge, and the like are high in power consumption, large maintenance costs such as online cleaning, long-period replacement, replacement of wearing parts and the like are high, the medicine consumption is high, the overall operation cost is high, and the MBR and the improved membrane process thereof are higher in cost and cannot meet the requirements of energy conservation and emission reduction;
(4) the interior of the equipment can not effectively realize the hydrodynamic flow, and functional blind spots or structural dead angles exist.
(5) The occupied area of the equipment is large: partial natural degradation-simulated ecological treatment methods such as artificial wetlands, biological ponds and other processes, the area required by treating ton water is about 20-30 m2The area of the activated sludge A/O and the improved process for treating ton water is about 2-3 m2The area required by the contact oxidation or SBR process for treating per ton of water is about 1-1.5 m2The area required by the MBR process for treating one ton of water is about 0.5-1.0 m2In increasingly tense situations, integrated processing facilities need to be further optimized.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a domestic sewage treatment device, distributed sewage treatment device for the integration, than prior art construction standard height, stable water quality, area is little, the running cost is low, the ton water investment is low, the operation maintenance is simple.
The specific technical scheme is as follows:
a domestic sewage treatment device comprises a regulating tank, an anaerobic tank, an anoxic tank, a buffer function tank, an aerobic tank, a sedimentation tank, a filtering tank and a clean water tank which are connected in sequence;
also comprises a water equalizing tank which is arranged at the top of the anaerobic tank,
three water outlets are arranged in the water equalizing tank and are respectively connected to the anaerobic tank, the anoxic tank and the regulating tank; the flow channel of the water equalizing tank is provided with a U-shaped water distribution weir crest, and the U-shaped water distribution weir crest is provided with a depth positioning plate;
the anoxic tank, the aerobic tank and the sedimentation tank are provided with reflux systems;
the reflux system of the anoxic tank is a gas stripping reflux device and is connected to the anaerobic tank; the reflux system of the aerobic tank is a gas stripping reflux device and is connected to the anoxic tank; the outlet reflux system of the sedimentation tank is that a water pump refluxes to the bottom of the anaerobic tank;
the clean water tank is provided with an overflow port, and an ultraviolet sterilizer is arranged on a water outlet pipeline communicated with the overflow port.
The water inlets of the anaerobic tank, the anoxic tank and the buffer function tank are all arranged above, and the water outlets are all arranged below; the water outlets are provided with baffle plates.
Anaerobic filling is arranged in the anaerobic tank and comprises a plurality of staggered 90-degree L-shaped folded plates, and anaerobic folded plate supports are respectively fixed at two ends of each 90-degree L-shaped folded plate.
The anoxic tank is internally provided with efficient anoxic fillers which are supported in a grid mode.
An aeration head and a perforated air supply pipe are arranged in the aerobic tank.
The front end of the sedimentation tank is provided with a baffling water distribution plate, and a dosing point is arranged in front of the baffling water distribution plate; the top of the sedimentation tank is provided with a U-shaped drainage weir and a slag trap, and the U-shaped drainage weir is arranged at a drainage outlet of the sedimentation tank through a height adjusting screw rod; the U-shaped drainage weir of the sedimentation tank is communicated with the filtering tank; the sedimentation tank is provided with a telescopic deslagging device, and the deslagging device is suspended in the sedimentation tank; a mud bucket is arranged at the bottom of the sedimentation tank; the mud bucket is connected with a mud thickener.
The top of the filter tank is provided with a uniform water distributor; the uniform water distributor is a rotor.
Compared with the prior art the utility model discloses following beneficial effect has:
the utility model provides a pair of domestic sewage treatment plant optimizes cell body structural configuration, strengthen the preliminary treatment of the steady system of dimension, the shock resistance load capacity of reinforcing system, set up reasonable biochemical filler carrier, build biochemical best reaction condition, increase microbial flora activity, homogenization sewage ratio, improve each link sewage purification treatment efficiency, reduce electrical equipment and use, reduce and overhaul the blind spot, it is convenient that necessary equipment accomplishes to maintain as far as possible, reinforcing system's intellectuality and automation, it drops into to reduce manpower fortune dimension, and then synthesize and reach the purpose that the operation is stable and energy saving and emission reduction.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2a is a schematic view of a water equalizing tank;
FIG. 2b is a schematic sectional view of the water equalizing tank a-a;
FIG. 2c is a schematic sectional view of the water equalizing tank b-b;
FIG. 3 is a schematic diagram of the anaerobic packing structure of the anaerobic tank;
FIG. 4 is a schematic view of the structure of the packing support 32 of the anoxic tank;
FIG. 5 is a schematic view of the deslagger structure;
FIG. 6 is a schematic view of a U-shaped weir.
Detailed Description
The present invention will now be further described with reference to the accompanying drawings.
As shown in fig. 1, a domestic sewage treatment device comprises a regulating tank 1, an anaerobic tank 2, an anoxic tank 3, a buffer function tank 4, an aerobic tank 5, a sedimentation tank 6, a filtering tank 7 and a clean water tank 8 which are connected in sequence;
the sewage is lifted to the water equalizing tank 9 by the lifting pump of the adjusting tank 1.
Also comprises a water equalizing tank 9, the water equalizing tank 9 is arranged at the top of the anaerobic tank 2,
as shown in fig. 2a, 2b and 2c, a water equalizing tank baffle plate 91 and three water outlets 94 are arranged in the water equalizing tank 9, and the three water outlets 94 are respectively connected to the anaerobic tank 2, the anoxic tank 3 and the regulating tank 1; the flow channel of the water equalizing tank 9 is provided with a U-shaped water distribution weir crest 92, and the U-shaped water distribution weir crest 92 is provided with a depth positioning plate 93; the runner is provided with a U-shaped water distribution weir crest 92, and the water passing depth proportion is adjusted through a depth positioning plate 93 to finish the water quantity proportioning. The sewage is distributed in proportion in the water equalizing tank 1 and is distributed to the anaerobic tank 2 and the anoxic tank 3 respectively, and two water distribution proportions can be reasonably adjusted according to the water quality of inlet water and the operation condition of the system.
The anoxic tank 3, the aerobic tank 5 and the sedimentation tank 6 are all provided with a reflux system;
the reflux system of the anoxic tank 3 is a gas stripping reflux device 11 and is connected to the anaerobic tank 2; the reflux system of the aerobic tank 5 is a gas stripping reflux device 11 and is connected to the anoxic tank 3; an outlet reflux system of the sedimentation tank 6 is a water pump which refluxes to the bottom of the anaerobic tank 2;
the clean water tank 8 is provided with an overflow port, and an ultraviolet sterilizer 81 is arranged on a water outlet pipeline communicated with the overflow port.
The water inlets of the anaerobic tank 2, the anoxic tank 3 and the buffer function tank 4 are all arranged above, and the water outlets are all arranged below; the water outlets are provided with baffle plates 10.
As shown in fig. 3, an anaerobic filling material 21 is arranged in the anaerobic tank 2, the anaerobic filling material 21 comprises a plurality of staggered 90-degree L-shaped folding plates 22, and anaerobic folding plate supports 23 are respectively fixed at two ends of the 90-degree L-shaped folding plates 22.
The anaerobic tank 2 is an environment for creating anaerobic (dissolved oxygen is about zero), and means a reaction tank without dissolved oxygen and nitrate. Is beneficial to the growth of anaerobic microorganisms. The function of the activated sludge is to adsorb and degrade organic matters. The anaerobic tank 2 is internally provided with the anaerobic bacteria to hydrolyze, acidify and methanize the organic matters, remove the organic matters in the wastewater, improve the biodegradability of the sewage and facilitate the subsequent biochemical treatment. And the phosphorus-accumulating bacteria in the reflux mixed liquor release phosphate radicals under the anaerobic condition.
The anaerobic tank 2 completes the anaerobic function of sewage treatment, a special improved anaerobic filler 21 is arranged in the anaerobic tank, the anaerobic filler 21 adopts a folded plate intermittent method, the overflowing path of sewage is prolonged, and meanwhile, the 90-degree L-shaped folded plate 22 can keep the sludge concentration of the anaerobic tank; the upper part and the lower part are provided with fixed supports for supporting folded plate fillers, and simultaneously, a lower sludge storage space is formed to strengthen the anaerobic treatment effect;
the anaerobic tank 2 is baffled to pass through water, and the water can be discharged from the top to the bottom and can be emptied. Meanwhile, anaerobic sludge can be stored in the bottom space of the anaerobic tank 2, when the sludge is excessive, if the sludge is aboveground equipment, a proper amount of sludge is directly discharged from a drainage port, and if the sludge is buried in the ground, a proper amount of sludge is discharged from a sludge suction pipe of a fecal suction truck penetrating through the space of the water outlet baffle plate.
As shown in figure 4, the high-efficiency anoxic filler 31 is arranged in the anoxic pond 3, and the filler support 32 is in a grid form. The anoxic tank 3 creates an anoxic environment (dissolved oxygen is less than 0.5mg/L) in a reaction tank without dissolved oxygen but with nitrate. Is beneficial to the growth of the anoxic microorganisms. The function of the activated sludge is to adsorb and degrade organic matters. Usually, the nitrite nitrogen and the nitrate nitrogen in the reflux mixed liquor are generated and released under the action of denitrifying bacteria.
The inside of the anoxic tank 3 is provided with a special high-efficiency anoxic filler 31. The high-efficiency anoxic filler 31 is made of hydrophilic polypropylene fibers, the surface is very rough, microorganisms are easily attached to the high-efficiency anoxic filler 31, high integration of microorganism organisms is achieved, the high-efficiency anoxic filler 31 is shaken up and down, left and right near a balance position under the action of water flow, the mass transfer effect can be enhanced, an aged biological film falls off, and a certain amount of biological film and high activity are maintained; meanwhile, due to the combined action of the sludge attached to the filler and the floating activated sludge, the high activated sludge concentration is kept, and due to the high integration of the biological phases on the filler, an internal food chain is formed, so that the sludge generation amount is lower while the sewage is efficiently purified.
The anoxic tank 3 is provided with a filler support 32 as an upper filler support and a lower filler support material hanging layer, the water outlet end is provided with an air-stripping reflux device 11, the slurry-water mixed liquid is refluxed to the anaerobic tank 2 in an air-stripping mode, the thickness of an anaerobic sludge layer and the total amount of microorganisms in the anaerobic tank 2 are ensured, and the anaerobic biochemical phosphorus removal effect at the front end is ensured. The bottom of the anoxic tank 3 is provided with an intermittent air rotational flow stirring 33 which is used for stirring the anoxic tank regularly. The anoxic tank 3 is baffled to pass through water, and the water can enter from the upper part and exit from the lower part and can be emptied. Meanwhile, the bottom space of the anoxic tank 3 can store anoxic sludge, when the sludge is excessive, if the sludge is an overground device, a proper amount of sludge is directly discharged from a drainage port, and if the sludge is an underground device, a sludge suction pipe of a dung suction truck penetrates through the space of the baffle plate to discharge a proper amount of sludge.
The bottom of the buffer functional tank 4 is provided with an aeration pipe and an aeration head to complete the air supply or stirring function. The buffer function tank 4 can have the functions of an anoxic tank and an aerobic tank, when the treatment system focuses on the condition of removing ammonia nitrogen, the functional area is set to be the working condition of the aerobic tank, and at the moment, the tank body gas supply system is in continuous aeration; when the treatment system focuses on the removal effect condition of total nitrogen, the functional area is set to be a working condition of the facultative tank, and the tank body gas supply system only intermittently stirs at the moment. The buffer function tank 4 adopts baffling water, and the water can be discharged from the top to the bottom and can be emptied.
The aerobic tank 5 creates an aerobic environment (the dissolved oxygen is about 4 mg/L), and is beneficial to the growth of aerobic microorganisms. The function of the device is that the aerobic activated sludge adsorbs and degrades organic matters. The activated sludge is subjected to aerobic respiration to further decompose organic matters into inorganic matters. Removing most organic matters such as cod, ammonia nitrogen and the like in the sewage and removing pollutants. The operation is best to control the oxygen content and other requirements of the microorganisms, so that the microorganisms can perform aerobic respiration with maximum benefit.
The aerobic tank 5 is internally provided with a high-efficiency biological activity fluidized bed filler 53 for strengthening the function of an aerobic biochemical system. The filler has the advantages of high porosity, good wear resistance, good hydrophilicity, high microorganism attachment rate and the like. The filler adsorbs and intercepts suspended matters in the sewage, the retention time of bubbles in a water body and the gas-liquid contact surface area are increased by the actions of cutting and blocking bubbles, the mass transfer efficiency is improved, the loss of microbial flora with low propagation speed and low yield can be effectively avoided, the treatment efficiency of a biochemical system and the stability of a biochemical pool are improved, the toxic action of refractory substances and toxic substances on the microbial flora is effectively inhibited, the rain-time capacity of the system for impact of loads and toxic inhibiting substances and changes of pH value and temperature is obviously enhanced, the generation of residual sludge is effectively reduced, and synchronous nitrification and denitrification are realized.
An aeration head 51 and a perforated air supply pipe 52 are arranged in the aerobic tank 5 to complete air supply, and the perforated air supply pipe is arranged at the bottom of the tank to complete stirring and homogenization of bottom deposition filler brought by the installation of the aeration head. The aerobic tank 5 adopts self-flowing water which can be emptied and is provided with an internal filler intercepting layer.
And the water outlet end of the aerobic tank 5 is provided with a gas stripping reflux device 11, and the nitrified mixed liquid is refluxed to the buffer functional tank 4, namely the facultative tank, in a gas stripping manner, so that the denitrification is completed. The air stripping reflux device 11 is arranged at the upper part of the packing interception module and is kept at a certain depth.
The front end of the sedimentation tank 6 is provided with a baffling water distribution plate 61, and a dosing point 62 is arranged in front of the baffling water distribution plate 61; the top of the sedimentation tank 6 is provided with a U-shaped drainage weir 63 and a slag trap 64, and the U-shaped drainage weir 63 is arranged at a water outlet of the sedimentation tank 6 through a height adjusting screw; the U-shaped drainage weir 64 of the sedimentation tank 6 is communicated with the filtering tank 7; the sedimentation tank 6 is provided with a telescopic deslagging device 65, as shown in fig. 5, the deslagging device 65 is suspended in the sedimentation tank 6; a mud bucket 66 is arranged at the bottom of the sedimentation tank 6; the mud bucket 66 is connected with a mud thickener.
The sedimentation tank 6 adopts a horizontal flow sedimentation mode, and the sedimentation tank 6 is sedimentated to form sludge: one part is pumped into the anaerobic tank 2 through a sludge pump, so that the sludge concentration balance of the anaerobic tank is ensured, the hydraulic action of the water discharged by the water pump forms annular hydraulic stirring on the anaerobic tank 2, an anaerobic sludge layer is loosened, the purification energy efficiency of an anaerobic functional unit is enhanced, and the system is ensured not to have dead sludge blind spots. And discharging a part of residual sludge to a sludge concentration tank through gravity flow.
Supernatant liquid formed by the precipitation in the sedimentation tank 6 is collected by the U-shaped water discharge weir 63 and then flows into the water distribution weir of the filter tank 7. As shown in fig. 6, the U-shaped drain weir 63 is a double-sided V-shaped water collecting weir.
The structure of the filter tank 7 from top to bottom is a water distribution weir, an even water distributor 71, a perforated cover plate at the upper part of a filter material, a carbon fiber efficient filter material 72, a perforated support plate at the lower part of the filter material, a perforated air backwash pipe, a perforated water backwash pipe and the tank bottom, and water is distributed evenly, filtered by gravity flow and discharged by a baffle plate. And then discharged into a clean water tank 8.
The top of the filtering tank 7 is provided with an even water distributor 71; the uniform water distributor 71 is a rotor.
The filter tank 7 is internally provided with a carbon fiber high-efficiency filter material 72, the upper part of the filter material layer is provided with a perforated cover plate, the lower part of the filter material layer is provided with a perforated bearing plate, and the filter tank is also provided with a back washing system 73. The filter tank 7 is provided with a back washing system 73 which comprises gas back washing and water back washing, wherein gas and water are mixed during back washing, and impurities are discharged from a self-flowing back washing water discharging pipe after passing through the upper perforated cover plate. Thereby realizing gravity self-flow filtration and automatic air-water back flushing of the filter tank.
The water inlet of the clean water tank 8 is designed to be baffled to be fed through a pipeline, the filtered water is stored and stored, the water overflows to the ultraviolet sterilizer 81 after reaching the designed liquid level, the designed liquid level of the water outlet can be adjusted through the water outlet weir, and the water is discharged after reaching the standard after being sterilized.
And the equipment area is also provided for placing a sludge reflux pump, a filtering backwashing pump, an ultraviolet sterilizer 81, related pipe fittings and matched valves.
The equipment room can be integrated with the main body equipment or can be arranged separately from the main body equipment; an electric cabinet (with a PLC), a fan and a dosing unit are arranged in the equipment room.
Claims (7)
1. A domestic sewage treatment device is characterized by comprising a regulating tank, an anaerobic tank, an anoxic tank, a buffer function tank, an aerobic tank, a sedimentation tank, a filtering tank and a clean water tank which are connected in sequence;
also comprises a water equalizing tank which is arranged at the top of the anaerobic tank,
three water outlets are arranged in the water equalizing tank and are respectively connected to the anaerobic tank, the anoxic tank and the regulating tank; the flow channel of the water equalizing tank is provided with a U-shaped water distribution weir crest, and the U-shaped water distribution weir crest is provided with a depth positioning plate;
the anoxic tank, the aerobic tank and the sedimentation tank are provided with reflux systems;
the reflux system of the anoxic tank is a gas stripping reflux device and is connected to the anaerobic tank; the reflux system of the aerobic tank is a gas stripping reflux device and is connected to the anoxic tank; the outlet reflux system of the sedimentation tank is that a water pump refluxes to the bottom of the anaerobic tank;
the clean water tank is provided with an overflow port, and an ultraviolet sterilizer is arranged on a water outlet pipeline communicated with the overflow port.
2. The domestic sewage treatment device according to claim 1, wherein the water inlets of said anaerobic tank, said anoxic tank and said buffer functional tank are all above, and the water outlets are all below; the water outlets are provided with baffle plates.
3. The domestic sewage treatment device according to claim 1, wherein the anaerobic tank is filled with anaerobic filler, the anaerobic filler comprises a plurality of staggered 90-degree L-shaped folded plates, and anaerobic folded plate supports are respectively fixed at two ends of each 90-degree L-shaped folded plate.
4. The domestic sewage treatment device according to claim 1, wherein said anoxic tank is filled with highly efficient anoxic packing, and the packing support is in a grid form.
5. The domestic sewage treatment apparatus of claim 1, wherein the aeration head and the perforated gas supply pipe are disposed in the aerobic tank.
6. The domestic sewage treatment device according to claim 1, wherein a baffle is arranged at the front end of the sedimentation tank, and a dosing point is arranged in front of the baffle; the top of the sedimentation tank is provided with a U-shaped drainage weir and a slag trap, and the U-shaped drainage weir is arranged at a drainage outlet of the sedimentation tank through a height adjusting screw rod; the U-shaped drainage weir of the sedimentation tank is communicated with the filtering tank; the sedimentation tank is provided with a telescopic deslagging device, and the deslagging device is suspended in the sedimentation tank; a mud bucket is arranged at the bottom of the sedimentation tank; the mud bucket is connected with a mud thickener.
7. The domestic sewage treatment device according to claim 1, wherein an uniform water distributor is arranged at the top of the filtering tank; the uniform water distributor is a rotor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201921872360.5U CN210796140U (en) | 2019-11-02 | 2019-11-02 | Domestic sewage treatment device |
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| CN201921872360.5U CN210796140U (en) | 2019-11-02 | 2019-11-02 | Domestic sewage treatment device |
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| CN210796140U true CN210796140U (en) | 2020-06-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112744909A (en) * | 2020-12-15 | 2021-05-04 | 中新联科环境科技(安徽)有限公司 | Integrated biological treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112744909A (en) * | 2020-12-15 | 2021-05-04 | 中新联科环境科技(安徽)有限公司 | Integrated biological treatment system |
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