CN215288157U - Rural sewage treatment plant of integration - Google Patents
Rural sewage treatment plant of integration Download PDFInfo
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- CN215288157U CN215288157U CN202022442273.5U CN202022442273U CN215288157U CN 215288157 U CN215288157 U CN 215288157U CN 202022442273 U CN202022442273 U CN 202022442273U CN 215288157 U CN215288157 U CN 215288157U
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Abstract
The utility model provides a rural sewage treatment plant of integration, it is not high to aim at solving to have hydraulic load in traditional AO technology, the process flow is complicated, defects such as maintenance cost height, the device includes the sewage treatment box of integral type, it is formed with the equipment district to separate in the sewage treatment box, the oxygen deficiency pond, good oxygen pond, sedimentation tank and retrieval and utilization pond, outside sewage flows through the oxygen deficiency pond in order, good oxygen pond and sedimentation tank, clear water inflow retrieval and utilization pond that obtains is handled through the sedimentation tank, the top in retrieval and utilization pond is provided with the overflow pipe that the discharge surpassed and set for the highest water level, good oxygen pond is separated through the baffle of vertical direction with the oxygen deficiency pond, open the bottom of baffle has the intercommunicating pore, install the aerator in the good oxygen pond, the compressed air source in aerator and the equipment district is connected. The utility model discloses utilize the principle of airlift loop reactor, improve dissolved oxygen efficiency effectively, hold back the longer microorganism of epoch cycle, simple structure is compact, area is little, the operation energy consumption is low, the treatment effeciency is high.
Description
Technical Field
The utility model relates to a sewage treatment field, especially rural sewage treatment plant of integration.
Background
In recent years, the contradiction between the rural economic development and the ecological environment in China is increasingly prominent, and especially the problem of rural water environment pollution is more serious and needs to be solved urgently. Rural water pollution has the characteristics of wide range, large difference between regions, dispersion distribution, large change of water quality and water quantity and the like. Common sewage treatment technologies mainly include anaerobic biotechnology such as septic tanks, anaerobic tanks, and biogas digesters; aerobic biological treatment techniques such as biological contact oxidation, biological filters, oxidation ditches, SBR (sequencing batch reactor) processes; ecological techniques such as stabilization ponds, constructed wetlands, land infiltration and the like. The above treatment technologies all have advantages and disadvantages, and need to be combined in practical engineering.
In the aspect of process selection of rural sewage equipment, the AO process is simple in form and high in treatment efficiency, and is the most common selection process. The traditional AO technology is a sewage biological treatment system consisting of an anoxic reaction system and an aerobic reaction system, and the process flow diagram is shown in figure 1.
The conventional AO process has the following problems:
generally, the concentration of sludge is not high, and is usually about 3000mg/L, so that the hydraulic load is not high.
Consists of a plurality of treatment units such as an anoxic tank, an aerobic tank, a sedimentation tank and the like, wherein each treatment unitThe process flow is complicated due to separate arrangement; the air supply equipment required by the aerobic tank and the reflux equipment required by the sedimentation tank need to be separately built and placed in a machine room, so that the capital investment and the floor area are increased;
the sludge in the aerobic tank and the sedimentation tank needs to be simultaneously refluxed and mixed with the inlet water and flows into the anoxic tank together, and due to the two reflux systems, the equipment is complex to operate, so that the operation management difficulty is high, and the maintenance cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model aims at the deficiency of AO technology, utilizes the principle of airlift loop reactor, improves dissolved oxygen efficiency effectively, holds back the longer microorganism of epoch cycle, provides a simple structure compactness, area is little, the operation energy consumption is low, the rural sewage treatment device of integration that treatment effeciency is high.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a rural sewage treatment plant of integration, includes the sewage treatment box of integral type the partition is formed with equipment district, oxygen deficiency pond, good oxygen pond, sedimentation tank and retrieval and utilization pond in the sewage treatment box, and the sewage treatment box lateral wall of integral type has a water inlet, and outside sewage passes water inlet and oxygen deficiency pond turn-on connection through the delivery pipe, wherein sewage flows through oxygen deficiency pond, good oxygen pond, sedimentation tank and retrieval and utilization pond in order in the sewage treatment box, the top in retrieval and utilization pond is provided with the overflow pipe that the discharge surpassed and sets for the highest water level, install the aerator in the good oxygen pond, aerator pipe connection compressed air source, compressed air source sets up in the equipment district.
The utility model discloses rural sewage treatment plant of integration carries out rational distribution with oxygen deficiency, good oxygen, precipitation treatment unit according to time and space order, brings the system into equipment room, sewage retrieval and utilization jointly simultaneously, constructs each unit structures combination, forms highly integrated integration equipment, and the function subregion includes oxygen deficiency pond, good oxygen pond, sedimentation tank, retrieval and utilization pond and equipment district.
The utility model relates to a rural sewage treatment plant of integration's intercommunication mode does: the anoxic tank is communicated with the aerobic tank through a water passing hole at the bottom of the partition plate, the aerobic tank is communicated with the sedimentation tank through an outer guide plate, the sedimentation tank is communicated with the recycling tank through a water outlet pipe on the water outlet groove, and the recycling tank recycles the treated water through the water outlet pipe to finish sewage purification and resource utilization. Meanwhile, an overflow pipe is also designed at the highest water level of the recycling pool, and when the water volume of the system is higher than the highest water level, the redundant water is discharged out of the system, so that the safety of the system is ensured; an emptying pipe is arranged at the bottom of the aerobic tank and is used for emptying the system.
The utility model discloses rural sewage treatment plant of integration handles the process of sewage as follows: the sewage firstly enters the anoxic tank through the high-level water inlet, and the sewage enters the aerobic tank through the hole at the bottom of the partition plate between the anoxic tank and the aerobic tank. The sewage enters an upflow zone under the action of aeration for aerobic biochemical treatment, and enters a downflow zone defined by an outer guide plate and an inner guide plate when reaching the top of an aerobic tank, and then enters a sedimentation tank. And (3) carrying out mud-water separation on the aerobic treated mixture through an inclined tube filler, wherein the separated water enters a recycling tank through a water outlet pipe on a water outlet groove, and the sludge returns to the bottom of the aerobic tank through an inclined partition plate. And finally, water in the recycling tank is discharged through a water outlet pipe, the sludge subjected to sedimentation separation is mixed with sewage in the aerobic tank to form mixed liquid, the mixed liquid is refluxed to the position near the water inlet of the anoxic tank through a reflux device connected with the equipment area, is mixed with raw water, and enters the system again to start the next cycle of circulation. The excess sludge produced by the system is discharged through an excess sludge pipe connected with a return pipe, and a valve on the excess sludge pipe is opened.
The utility model discloses rural sewage treatment plant of integration gets rid of the principle of pollutant is: in the anoxic pond, heterotrophic bacteria hydrolyze starch, fiber, carbohydrate and other suspended pollutants and soluble organic matters in the sewage into organic acid, so that macromolecular organic matters are decomposed into micromolecular organic matters, insoluble organic matters are converted into soluble organic matters, and when products after anoxic hydrolysis enter the aerobic pond for aerobic treatment, the biodegradability of the sewage is improved, and the oxygen efficiency is improved. Heterotrophic bacteria in anoxic pond can remove protein, fat and other pollutantsAmmoniation is carried out to free ammonia (NH)3-N、NH4 +) Under the condition of sufficient oxygen supply, the nitrification of autotrophic bacteria can react NH3-N（NH4 +) Oxidation to NO3 -Returning to the anoxic tank under reflux control, and denitrifying to remove NO under anoxic condition3 -Reduced to molecular nitrogen (N)2) C, N, O, the ecological cycle is completed, and the sewage harmless treatment is realized.
The utility model discloses rural sewage treatment plant of integration is better to the effect of going of pollutant especially organic matter and ammonia nitrogen, can reach the one-level A standard of "urban sewage treatment plant pollutant discharge standard", if need strengthen the effect of getting rid of phosphorus, can increase chemical dephosphorization facility in the system, adds chemical dephosphorization medicament like coagulant such as PAC, PAFC and advances good oxygen pond. When the effluent of the integrated rural sewage treatment device is recycled, the outflow pipe can be connected with an overflowing type ultraviolet sterilizer according to the requirement, so that the total coliform population of the effluent reaches the standard.
Preferably, the integrated rural sewage treatment equipment is of a steel structure.
The anoxic tank and the aerobic tank are partitioned by a partition plate, and the bottoms of the partition plates are uniformly perforated to realize communication.
The sedimentation tank is positioned in the aerobic tank, the sedimentation tank and the aerobic tank are separated by an outer guide plate, the aerobic tank is arranged outside the outer guide plate, and the mud-water mixture flows from bottom to top in an ascending state. Inside the outer guide plate, the mud-water mixture is in a downflow state and flows from top to bottom.
And the mud-water mixture flows down and then enters a sedimentation tank for mud-water separation, and an inclined tube filler is arranged in the sedimentation tank. The separated water enters a recycling pool through a water outlet groove; the sludge returns to the aerobic tank through the inclined partition plate and returns through a return pipe arranged in the aerobic tank.
The recycling pool is used for storing water for AO purification and sedimentation separation, is positioned at a high position and can provide gravity flow conditions for recycling.
The equipment area is positioned at the lower part of the recycling tank and is separated by a separating bottom plate, and the equipment area is used for storing relevant equipment of the treatment system, such as a fan, a reflux pump, an electric cabinet and the like.
Furthermore, the water inlet pipe and the return pipe of the anoxic tank are mutually vertical, so that the mixture of the inlet water and the return mixed liquid is realized.
Furthermore, an aeration system is arranged at the bottom of the aerobic tank, and the aeration system comprises an air inlet pipe and an aerator.
Further, the outer guide plate is divided into two parts, namely a vertical outer guide plate and an inclined outer guide plate, wherein the included angle between the bottom of the vertical guide plate and the inclined guide plate is preferably 120-135 degrees, and the distance between the bottom of the inclined outer guide plate and the bottom of the equipment is 30-50 cm.
Furthermore, a flow guide control weir plate is fixedly arranged on the outer flow guide plate, a rectangular or triangular weir is arranged on the weir plate, the height of the weir plate can be adjusted up and down, and the entering amount of the mixture in the aerobic tank is controlled.
Furthermore, a return pipe is arranged at the bottom of the aerobic tank and is connected with a return device of the equipment area, so that the high-concentration mixed liquor in the aerobic tank flows back to the anoxic tank. The discharging of the excess sludge of the system is shared by the return pipe, the excess sludge pipe and the return pipe are connected outside the anoxic tank through a tee joint, and when the excess sludge pipe needs to be discharged, a valve on the excess sludge pipe is opened.
Further, the inner guide plate is divided into two parts, namely a vertical inner guide plate and an inclined inner guide plate, and the included angle between the bottom of the vertical inner guide plate and the inclined inner guide plate is preferably 120-135 degrees.
Furthermore, the outer guide plate and the inner guide plate are enclosed to form a down flow area, the distance between the outer guide plate and the inner guide plate is 10-20cm, and in order to ensure the flatness and stability of the down flow area, a cross brace is arranged between the outer guide plate and the inner guide plate, and the upper layer and the lower layer of the cross brace are fixedly installed.
Furthermore, the partition plate of the sedimentation tank is divided into two parts, namely a 2# vertical partition plate and a 2# inclined partition plate, wherein the 2# inclined partition plate is connected with the bottom plate of the equipment, and the included angle is 50-60 degrees.
Furthermore, the inclined tube filler of the sedimentation tank is fixed through an upper layer bracket and a lower layer bracket, and the brackets are vertically welded. The inclined tube packing is obliquely arranged at an angle of 60 degrees, and the length of the inclined tube is preferably 1 m.
Furthermore, a water outlet control weir plate is fixedly arranged on the water outlet groove, a rectangular or triangular weir is arranged on the weir plate, the height of the weir plate can be adjusted up and down, and the water outlet amount is controlled and floaters are intercepted. Meanwhile, in order to ensure the flatness and stability of the water outlet groove, cross braces are arranged in the groove.
Furthermore, an overflow pipe is arranged at the top of the water level of the reuse tank to discharge redundant water, so that the safety of the system is ensured; the bottom of the recycling tank is discharged, the discharged water enters a rear-end system (such as urban greening and vehicle washing) through gravity flow, and a overflowing type ultraviolet sterilizer can be installed in the recycling tank according to the requirement.
The utility model has the advantages that:
(1) by utilizing the principle of the airlift loop reactor, the dissolved oxygen efficiency is effectively improved, microorganisms with longer retention time period and high sludge concentration are intercepted, the hydraulic load during sewage treatment is improved, and the removal effect on pollutants, particularly organic matters and ammonia nitrogen is good.
(2) The sedimentation tank is arranged in the aerobic tank, and the original 2 reflux systems of sludge reflux and mixed liquid reflux are combined into one, so that the energy consumption is reduced, and the operation cost is saved.
(3) The anoxic tank, the aerobic tank, the sedimentation tank, the recycling tank and the equipment area are constructed in a combined manner, the structure is compact, and the capital investment and the occupied area are reduced.
(4) The oxygen-poor pool, the aerobic pool, the sedimentation pool, the recycling pool and the equipment area are combined and constructed, the equipment is highly integrated, the construction technology is simple and convenient, and only the assembled equipment needs to be transported to the site for installation. And fine management is not needed during operation, and the management is convenient.
(5) The recycling tank can be used for recycling urban sewage, is positioned at a high position and can supply water by gravity flow; meanwhile, aquatic plants can be planted in the recycling tank according to the requirement.
Drawings
FIG. 1 is a flow diagram of a conventional AO process.
Fig. 2 is a schematic top plan view of the present invention.
Fig. 3 is a bottom plan view of the present invention.
Fig. 4 is a cross-sectional view a-a of fig. 1.
Fig. 5 is a cross-sectional view B-B of fig. 1.
Fig. 6 is a cross-sectional view taken along line C-C of fig. 1.
Fig. 7 is a cross-sectional view taken along line D-D of fig. 1.
In the figure, A is an anoxic tank, O is an aerobic tank, S is a sedimentation tank, R is a recycling tank, E is a facility area, F-1 is a water inlet pipe valve, F-2 is a surplus sludge pipe valve, F-3 is a return pipe valve, F-4 is a gas inlet pipe valve, F-5 is a water outlet pipe valve, F-6 is an overflow pipe valve, F-7 is an emptying pipe valve, S-1 is an air blower, S-2 is a return pump, S-3 is an aerator, a is a water inlet pipe, b is a water outlet pipe, b-1 is an inner water outlet pipe, b-2 is an outer water outlet pipe, c is an overflow pipe, d is an emptying pipe, E is a sludge discharge pipe, E-1 is a return pipe, E-2 is a surplus sludge discharge pipe, F is a gas inlet pipe, 1 is a cylinder, 2 is a division plate No. 1, 3 is a diversion control weir plate, 4 is an outer diversion plate, and, 4-1 is a vertical outer guide plate, 4-2 is an inclined outer guide plate, 5 is an inner guide plate, 5-1 is a vertical inner guide plate, 5-2 is an inclined inner guide plate, 6 is a water outlet control weir plate, 7 is a water outlet trough plate, 8 is a No. 2 partition plate, 8-1 is a No. 2 vertical partition plate, 8-2 is a No. 2 inclined partition plate, 9 is a partition bottom plate, and 10 is a water passing hole.
Detailed Description
As shown in figure 2, the integrated rural sewage treatment device comprises an anoxic tank A, an aerobic tank O, a sedimentation tank S, a recycling tank R and an equipment area E. The device barrel 1 and the No. 1 division plate 2 form an anoxic tank A, the No. 1 division plate 2 and the outer division plate 4 form an aerobic tank O, the inner division plate 5 and the No. 2 division plate 8 form a sedimentation tank, the No. 2 division plate 8, the barrel 1 and the division bottom plate 9 form a recycling tank R, and the barrel 1 and the division bottom plate 9 form a device area E.
As shown in FIG. 3, the communication mode of the integrated rural sewage treatment device is as follows: the anoxic tank A is communicated with the aerobic tank O through a water passing hole 10 at the bottom, the aerobic tank O is communicated with the sedimentation tank S through an outer guide plate 4 (the outer guide plate 4 comprises 2 parts, namely 4-1, specifically a vertical outer guide plate, and 4-2, specifically an inclined outer guide plate), and the sedimentation tank S is communicated with the recycling tank R through a water outlet pipe b-1 on a water outlet tank enclosed by a water outlet tank plate 7 and a No. 2 vertical partition plate 8-1. The recycling tank R discharges the treated water out of the system through a water outlet pipe b-2 to finish sewage purification. Meanwhile, an overflow pipe c is also designed at the highest water level of the recycling pool R, a valve F-6 is installed on the overflow pipe c, and when the water volume of the system is higher than the highest water level, the redundant water is discharged out of the system, so that the safety of the system is ensured. Meanwhile, an emptying pipe d is arranged at the bottom of the aerobic tank O, and the system can be emptied by opening a valve F-7 on the emptying pipe. The communication mode means the sequence of water flow passing through each zone.
For realizing the biological nitrogen removal function of system, the utility model discloses rural sewage treatment plant of integration has designed return system, connects back flow e-1 through return-flow equipment S-2, and the mud after will deposiing flows back to the water inlet department in oxygen deficiency pond A, gets into oxygen deficiency pond A jointly, and the denitrifying bacteria in the oxygen deficiency pond A utilizes the organic carbon source that raw water and backward flow mud provided jointly to carry out the denitrification, improves denitrogenation efficiency. When excess sludge in the system is excessive, the excess sludge is discharged through an excess sludge pipe e-2, a return pipe e-1 is connected with the excess sludge pipe e-2 through a tee joint, and sludge discharge can be realized by opening a valve F-2 on the excess sludge pipe e-2.
As shown in fig. 4, the integrated rural sewage treatment device of the utility model arranges the sedimentation tank S in the aerobic tank O, and in order to achieve good gas-liquid-solid three-phase separation effect, an outer guide plate 4 is arranged in the aerobic tank O for simple separation, and the outer guide plate 4 comprises 2 parts, namely a vertical outer guide plate 4-1; and secondly, the outer guide plate 4-2 is inclined, the guide control weir plate 3 is arranged at the top of the vertical outer guide plate 4-1 through a No. 1 screw, a rectangular weir or a triangular weir is arranged on the guide control weir plate 3, the height can be adjusted up and down, and the amount of the mud-water mixture of the aerobic tank O entering the sedimentation tank S can be controlled. In order to prevent the influence of gas generated by an aerator S-3 at the bottom of an aerobic tank O on the sludge-water separation effect, an inclined outer guide plate 4-2 is arranged at the tail end of a vertical outer guide plate 4-1, the included angle between the vertical outer guide plate and the inclined outer guide plate is within the range of 120-135 degrees, for example 135 degrees, and the distance between the bottom of the inclined outer guide plate 4-2 and the bottom of equipment is about 30 cm.
The area formed by the outer guide plate 4 and the inner guide plate 5 is a down-flow area, the flow direction of the sewage in the aerobic tank O is changed, the original flow direction of the sewage in the aerobic tank O is from bottom to top to form an up-flow area, and the flow direction is from top to bottom after entering the outer guide plate. The distance between the outer guide plate 4 and the inner guide plate 5 is 10-20cm, and the 5-part of the inner guide plate also comprises 2 parts, namely, the first part is vertical to the 5-1 plate of the inner guide plate; secondly, the inclined inner guide plate 5-2 forms an included angle of 120-135 degrees with the vertical inner guide plate. Outer guide plate 4 is fixed through 1# stull (like the square tube) with interior guide plate 5, and two-layer installation about 1# stull is fixed through 2# screw.
The sedimentation tank S adopts an inclined tube sedimentation method, inclined tube packing 11 is installed in an area formed by vertical inner guide plates 5-1 and a 2# vertical partition plate 8-1, in order to facilitate the installation of the packing, a 2# cross brace and a 3# cross brace (such as a square tube) are arranged at the top and the bottom of the packing, the upper layer and the lower layer of the 2# cross brace and the 3# cross brace are installed, and the directions are vertical to each other. In order to facilitate the sludge discharge of the sedimentation tank, a 2# inclined partition plate 8-2 is designed, and sludge subjected to sludge-water separation slides downwards to the bottom along the inclined partition plate 8-2. The included angle between the 2# inclined partition plate 8-2 and the bottom plate of the equipment is 55 degrees.
The water outlet groove of the sedimentation tank S consists of a water outlet groove plate 7 and a No. 2 vertical partition plate 8-1, and the tail end of the water outlet groove is provided with a water outlet pipe b-1, so that water after sedimentation and separation enters the recycling tank R. In order to intercept the floating objects and adjust the water yield, a water outlet control weir plate 6 is arranged on the water outlet groove plate 7, a rectangular weir or a triangular weir is arranged on the water outlet control weir plate 6, the height can be adjusted up and down, and the separated water in the sedimentation tank S can be controlled to enter a recycling tank R. The water outlet trough plate 7 and the water outlet control weir plate 6 are fixed through a No. 1 screw. In order to ensure the flatness and stability of the water outlet groove section, a No. 1 cross brace (such as square steel) is arranged between the water outlet groove plate 7 and a No. 2 vertical partition plate 8-1 and can be directly welded.
As shown in the figure, the recycling tank R is separated from the equipment area E through a separating bottom plate 9, the recycling tank R is arranged at the upper part and used for storing treated water, if the integrated device is placed on the ground, the position of the water outlet pipe b-2 is higher, and the rear end of the integrated device can be connected with an artificial wetland to realize high-level water distribution of the wetland; if the water outlet display is desired, aquatic plants can be planted in the recycling pool. The equipment area E is used for storing equipment related to the device, such as a reflux pump S-2, a blower S-1, an electric cabinet and the like. The side wall of the equipment area can be provided with a door opening, so that the equipment area can enter at the later stage conveniently.
The utility model relates to a rural sewage treatment plant of integration's intercommunication mode does: the anoxic tank A is communicated with the aerobic tank O through a water passing hole 10 at the bottom of the partition plate 9, the aerobic tank O is communicated with the sedimentation tank S through an outer guide plate 4, the sedimentation tank S is communicated with the recycling tank R through a water outlet pipe b on the water outlet groove, and the recycling tank R discharges the treated water out of the system through the water outlet pipe b to complete sewage purification. Meanwhile, an overflow pipe c is also designed at the highest water level of the recycling pool R, and when the water volume of the system is higher than the highest water level, the redundant water is discharged out of the system, so that the safety of the system is ensured; an emptying pipe d is arranged at the bottom of the aerobic tank O and is used for emptying the system.
The utility model discloses rural sewage treatment plant of integration handles the process of sewage as follows: the direction of the arrow in fig. 3 is the flowing direction of the sewage, the sewage firstly enters the anoxic tank A through the high-level water inlet, and the sewage enters the aerobic tank O through the water passing hole 10 at the bottom of the partition plate 9 between the anoxic tank A and the aerobic tank O. The sewage enters an upflow zone under the action of aeration for aerobic biochemical treatment, and enters a downflow zone formed by the outer guide plate 4 and the inner guide plate 5 when reaching the top of the aerobic tank O, and then enters a sedimentation tank S. The mixture after aerobic treatment is subjected to mud-water separation by virtue of the inclined tube filler, the separated water enters the recycling tank R through a water outlet pipe on the water outlet groove, the sludge returns to the bottom of the aerobic tank through the inclined partition plate 8-2, and the inclined partition plate 8-2 plays a role in guiding the flow direction of the sludge. And finally, water in the recycling tank R is discharged through a water outlet pipe b, the precipitated and separated sludge is mixed with sewage in the aerobic tank O to form mixed liquid, the mixed liquid is refluxed to the position near the water inlet of the anoxic tank O through a reflux equipment reflux pump S-2 connected with the equipment area, mixed with raw water and enters the system again to start the next round of circulation. Excess sludge generated by the system is discharged through an excess sludge pipe e-2 connected with a return pipe e-1, and a valve on the excess sludge pipe is opened. The return pipe e-1 is connected with the excess sludge pipe e-2 through a tee joint, and the amount of the excess sludge can be adjusted through the control of valves at two ends, namely, the amount of the discharged excess sludge is reduced after the return flow is increased; after the reflux amount is reduced, the amount of the discharged excess sludge is increased, and the method is an active adjustment mode.
The utility model discloses rural sewage treatment plant of integration gets rid of the principle of pollutant is: in the anoxic pond, heterotrophic bacteria remove suspended pollutants such as starch, fiber, carbohydrate and the like in the sewageAnd the soluble organic matters are hydrolyzed into organic acids, so that the macromolecular organic matters are decomposed into micromolecular organic matters, insoluble organic matters are converted into the soluble organic matters, and when products after anoxic hydrolysis enter an aerobic tank for aerobic treatment, the biodegradability of sewage is improved, and the oxygen efficiency is improved. Ammoniating protein, fat and other pollutants in heterotrophic bacteria in anoxic pond to release ammonia (NH)3-N、NH4 +) Under the condition of sufficient oxygen supply, the nitrification of autotrophic bacteria can react NH3-N（NH4 +) Oxidation to NO3 -Returning to the anoxic tank under reflux control, and denitrifying to remove NO under anoxic condition3 -Reduced to molecular nitrogen (N)2) R, N, O, the ecological cycle is completed, and the sewage harmless treatment is realized.
The utility model discloses rural sewage treatment device of integration is better to the effect of going of pollutant especially organic matter and ammonia nitrogen, can reach the one-level A standard of "urban sewage treatment plant pollutant discharge standard", if need strengthen the effect of getting rid of phosphorus, can increase chemical dephosphorization facility in the system, adds chemical dephosphorization medicament like coagulant such as PAC, PAFC and advances good oxygen pond.
Claims (10)
1. An integrated rural sewage treatment device is characterized in that: including the sewage treatment box of integral type separate in the sewage treatment box and be formed with equipment district, oxygen deficiency pond, good oxygen pond, sedimentation tank and retrieval and utilization pond, the upper end intercommunication of oxygen deficiency pond lateral wall has the inlet tube, and outside sewage gets into the sewage treatment box through the inlet tube, and sewage flows through oxygen deficiency pond, good oxygen pond and sedimentation tank in order, and the clear water that obtains through the sedimentation tank treatment flows into the retrieval and utilization pond, the top in retrieval and utilization pond is provided with the overflow pipe that the discharge surpassed and set for the highest water level, good oxygen pond is separated through the baffle of vertical direction with the oxygen deficiency pond, and open the bottom of baffle has the intercommunicating pore, install the aerator in the good oxygen pond, the aerator passes through intake pipe line connection compressed air source, compressed air source sets up in the equipment district.
2. The integrated rural sewage treatment plant of claim 1, wherein: the bottom of the aerobic tank is provided with a return pipe, and the return pipe is connected with a return pump of the equipment area.
3. The integrated rural sewage treatment plant of claim 2, wherein: and the external sewage vertically flows downwards in the anoxic tank, and the mixed liquid in the return pipe horizontally flows into the anoxic tank.
4. The integrated rural sewage treatment plant of claim 1, wherein: the equipment area and the recycling tank are arranged on the same side of the aerobic tank, and the recycling tank is arranged above the equipment area.
5. The integrated rural sewage treatment plant of claim 1, wherein: the aerobic tank comprises an ascending area and a descending area, the descending area is formed by surrounding and matching an outer guide plate and an inner guide plate which are arranged in parallel, the anoxic tank is communicated with the ascending area, and the aerator is arranged at the bottom of the ascending area.
6. The integrated rural sewage treatment plant of claim 5, wherein: the sedimentation tank is positioned in the aerobic tank, the inclined tube filler is arranged in the sedimentation tank, and an inclined partition plate inclined towards the bottom of the upflow zone of the aerobic tank is arranged below the sedimentation tank.
7. The integrated rural sewage treatment plant of claim 6, wherein: the sedimentation tank is separated from the down-flow area in the aerobic tank through an outer guide plate.
8. The integrated rural sewage treatment plant of claim 5, wherein: the outer guide plate comprises a vertical outer guide plate and an inclined outer guide plate, the inclined outer guide plate is arranged at the tail end of the vertical outer guide plate and forms an included angle of 120-135 degrees with the vertical outer guide plate, and the inclined outer guide plate is inclined towards one side of the inclined partition plate.
9. The integrated rural sewage treatment plant of claim 8, wherein: the included angle between the outer guide plate of slope and the perpendicular outer guide plate is 135.
10. The integrated rural sewage treatment plant of claim 1, wherein: aquatic plants are planted in the recycling tank.
Priority Applications (1)
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| CN202022442273.5U CN215288157U (en) | 2020-10-29 | 2020-10-29 | Rural sewage treatment plant of integration |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114349273A (en) * | 2021-12-28 | 2022-04-15 | 安徽普氏生态环境工程有限公司 | Nitrogen and phosphorus removal system and process for sewage treatment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114349273A (en) * | 2021-12-28 | 2022-04-15 | 安徽普氏生态环境工程有限公司 | Nitrogen and phosphorus removal system and process for sewage treatment |
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