CN116924617A - Energy-saving efficient circulating oxidation pond - Google Patents
Energy-saving efficient circulating oxidation pond Download PDFInfo
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- CN116924617A CN116924617A CN202310960750.2A CN202310960750A CN116924617A CN 116924617 A CN116924617 A CN 116924617A CN 202310960750 A CN202310960750 A CN 202310960750A CN 116924617 A CN116924617 A CN 116924617A
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- oxidation pond
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- sludge
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- 230000003647 oxidation Effects 0.000 title claims abstract description 75
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 75
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 68
- 239000010802 sludge Substances 0.000 claims abstract description 48
- 239000010865 sewage Substances 0.000 claims abstract description 40
- 239000000945 filler Substances 0.000 claims abstract description 20
- 238000011010 flushing procedure Methods 0.000 claims abstract description 19
- 238000012856 packing Methods 0.000 claims abstract description 19
- 238000011049 filling Methods 0.000 claims description 29
- 238000007667 floating Methods 0.000 claims description 22
- 239000000463 material Substances 0.000 claims description 9
- 238000004873 anchoring Methods 0.000 claims description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims description 4
- 229920006262 high density polyethylene film Polymers 0.000 claims description 3
- 229910052742 iron Inorganic materials 0.000 claims description 2
- 239000004575 stone Substances 0.000 claims 3
- 238000005273 aeration Methods 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 5
- 238000006243 chemical reaction Methods 0.000 abstract description 4
- 238000006213 oxygenation reaction Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 14
- 244000005700 microbiome Species 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 239000003344 environmental pollutant Substances 0.000 description 7
- 231100000719 pollutant Toxicity 0.000 description 7
- 241000196324 Embryophyta Species 0.000 description 5
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 238000005192 partition Methods 0.000 description 3
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 235000005273 Canna coccinea Nutrition 0.000 description 1
- 240000008555 Canna flaccida Species 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000008239 natural water Substances 0.000 description 1
- 238000006396 nitration reaction Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/14—NH3-N
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The application discloses an energy-saving efficient circulating oxidation pond which comprises a packing island and a stripping system, wherein the packing island is arranged in the middle of the oxidation pond, ecological gabions are arranged on slopes around the oxidation pond, and the stripping system is arranged between the packing island and the ecological gabions; the air stripping system comprises an air feeding main pipe, a back flushing pipe and a sludge air stripping air pipe, wherein the air feeding main pipe is arranged in the center of the filler island from top to bottom, the top end of the air feeding main pipe is respectively communicated with the back flushing pipe and the sludge air stripping air pipe, and the sludge air stripping air pipe is arranged at the periphery of the filler island; the application combines the gas stripping principle with the water body aeration, utilizes gas stripping to lift the sewage to the periphery of the oxidation pond, forms a peripheral-middle-peripheral sewage circulation track under the action of liquid level pressure difference, ensures that the water body forms aerobic-anoxic-aerobic state conversion, and improves the sewage treatment effect; meanwhile, the air required by gas stripping and the water in the anoxic zone are fully mixed for oxygenation, so that the oxygenation efficiency is improved, and the energy consumption is reduced.
Description
Technical Field
The application relates to the technical field of micro-power sewage treatment facilities, in particular to an energy-saving efficient circulating oxidation pond.
Background
The pond oxidation technology is rapidly developed in China at present, and becomes one of important technical methods for preventing and treating water pollution and realizing sewage reclamation; the traditional oxidation pond is a natural or artificial pond for treating pollutants in water by utilizing aquatic animals, plants and microorganisms existing in natural water, but has certain limitations: the traditional oxidation pond mainly utilizes the purification effect of aquatic plants to consume pollutants, has low microorganism content, can not effectively remove pollutants and has large occupied area; the low concentration of dissolved oxygen is not beneficial to removing organic matters, for example, although the dissolved oxygen can be improved after an aeration system is added, the water body has no obvious aerobic and anoxic conversion, and TP and TN can not be effectively removed; microorganisms in the oxidation pond are mainly deposited at the bottom of the pond and cannot fully contact with sewage; the slope of the bottom of the oxidation pond is smaller, the sludge can not be effectively gathered, and the sludge is not easy to discharge.
Disclosure of Invention
In order to solve the problems in the prior art, the application provides an energy-saving efficient circulating oxidation pond.
The technical scheme of the application is as follows:
an energy-saving efficient circulating oxidation pond comprises a filling island and a stripping system, wherein the filling island is arranged in the middle of the oxidation pond, ecological gabions are arranged on slopes around the oxidation pond, and the stripping system is arranged between the filling island and the ecological gabions; the air stripping system comprises an air supply main pipe, a back flushing pipe and a sludge air stripping air pipe, wherein the air supply main pipe is arranged in the center of the filling island from top to bottom, the top end of the air supply main pipe is respectively communicated with a plurality of back flushing pipes through the sludge air stripping air pipe, the back flushing pipes extend from the center to the outside in the filling island and are uniformly paved, the top end of the back flushing pipes is communicated with the sludge air stripping air pipe, and the other end of the sludge air stripping air pipe is inserted into the bottom end of the sludge lifting pipe; the sludge gas stripping air pipes are vertically and uniformly distributed on the periphery of the filler island; the bottom end of the air supply main pipe penetrates into the bottom of the oxidation pond and is inserted with a plurality of sewage lifting pipes, and the sewage lifting pipes are uniformly arranged at the bottom of the oxidation pond and extend to the periphery of the oxidation pond to be connected with the water distribution pipe.
Preferably, an impermeable film is paved on the slope and the bottom of the oxidation pond, and the impermeable film adopts an HDPE film; the impermeable membrane is fixed through the anchoring ditch around the periphery of the pond, and the top of the anchoring ditch is provided with a drainage ditch for preventing rainwater from entering the pond.
Preferably, the ecological gabion is surrounded by wire netting, and the inside is filled with filler; the inside of the ecological gabion is averagely divided into an upper layer, a middle layer and a lower layer, and water distribution pipes are buried in the upper layer, the middle layer and the lower layer.
Preferably, the outside of the filling island is surrounded by a grid frame, the inside is filled with light filling, the top of the filling island is provided with a fan, and the output end of the fan is communicated with the air supply main pipe.
Preferably, the backwash pipes are laid out at a length of one quarter of the diameter of the packing island.
Preferably, surrounding sludge collecting wells are arranged around the filling island, and a sludge lifting pipe and a sludge gas stripping pipe are arranged in the sludge collecting wells.
Preferably, a water inlet pipe is arranged on one side of the oxidation pond, and a water outlet pipe is arranged on the other side of the oxidation pond, so that water can directly flow to a discharge port or a farmland or a woodland for use; the end of the water inlet pipe is provided with a grid box, one side of the grid box facing water is composed of grid plates, and the other five sides are sealed by dense partition plates.
Preferably, the water surface in the oxidation pond is provided with an ecological floating block which is bound into a whole, the periphery of the ecological floating block is fixedly formed through a mesh screen, and a filling material is arranged in the ecological floating block.
The application has the following beneficial effects:
1. the application combines the gas stripping principle with the water body aeration, utilizes gas stripping to lift the sewage to the periphery of the oxidation pond, and moves the sewage to the middle under the action of liquid level pressure difference to form a sewage circulation track from the periphery to the middle to the periphery, so as to drive deposited microorganisms to re-suspend, thereby improving the contact area of the sewage and the microorganisms, simultaneously enabling the water body to form aerobic-anoxic-aerobic state conversion, and improving the sewage treatment effect; meanwhile, the air required by gas stripping and the water in the anoxic zone are fully mixed for oxygenation, so that the oxygenation efficiency is improved, the energy consumption is greatly reduced, and two purposes are achieved;
2. the application utilizes the combination of the biomembrane method and the activated sludge method, and simultaneously, the filler is respectively arranged in the aerobic zone and the anoxic zone, thereby greatly improving the microorganism content in the oxidation pond and the sewage treatment efficiency;
3. according to the application, the ecological floating blocks are arranged on the liquid surface of the oxidation pond, the contact area between water and air is increased by arranging the filling materials in the ecological floating blocks, and meanwhile, bubbles generated by aeration in the oxidation pond can be fully absorbed, so that the overall dissolved oxygen of the oxidation pond is improved.
4. The application utilizes the air stripping to lead the sewage to form a sewage circulation track from the periphery to the middle to the periphery, drives suspended matters in the water to gather towards the middle, and gradually deposits at the bottom of a mud collecting well around a filler island in the middle of an oxidation pond under the filtering and back flushing actions of the filler island, thereby being convenient for periodic mud discharge;
5. the oxidation pond has the advantages of simple structure, less equipment and energy consumption, lower engineering construction cost and later operation cost, and stronger practicability.
Drawings
FIG. 1 is a front cross-sectional view of the present application;
FIG. 2 is a top plan view of the pipe laying of the present application;
FIG. 3 is a top view of the present application;
FIG. 4 is a schematic view of a water distribution pipe according to the present application;
FIG. 5 is a plan view of an ecological floating block of the present application;
FIG. 6 is an isometric view of an ecological floating block of the present application;
FIG. 7 is a schematic cross-sectional view of a directional perforated tube in accordance with the present application.
The reference numerals in the drawings are as follows:
1. an impermeable membrane; 2. an anchoring groove; 3. a drainage ditch; 4. a filler island; 5. a grid frame; 6. a light filler; 7. a blower; 8. a main air supply pipe; 9. a first valve; 10. a sludge stripping gas pipe; 11. a second valve; 12. a third valve; 13. a sewage lifting pipe; 14. directional perforated pipe; 15. eave head; 16. ecological gabions; 17. a wire netting; 18. a filler; 19. a water distribution pipe; 20. a back flushing pipe; 21. a sludge lifting pipe; 22. a water inlet pipe; 23. a water outlet pipe; 24. a grille case; 25. a grating plate; 26. compacting the partition plate; 27. a mud collecting well; 28. ecological floating blocks; 29. planting holes; 30. aquatic plants; 31. a mesh screen; 32. and (5) filling materials.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1 to 3, an energy-saving efficient circulating oxidation pond is provided, wherein a main body is a concave oxidation pond with slopes on the periphery, a packing island 4 and a stripping system are arranged in the middle of the oxidation pond, an impermeable film 1 is paved on the slopes on the periphery and the bottom of the pond, and the impermeable film 1 adopts an HDPE film; the impermeable membrane 1 is fixed through an anchor ditch 2 which is arranged around the periphery of the oxidation pond, and a drainage ditch 3 is arranged at the top of the anchor ditch 2 and used for preventing rainwater from entering the oxidation pond, an ecological gabion 16 is arranged on slopes around the oxidation pond, and a gas stripping system is arranged between a filling island 4 and the ecological gabion 16. The air stripping system comprises an air supply main pipe 8, back flushing pipes 20 and sludge air stripping pipes 10, wherein the air supply main pipe 8 is arranged in the center of a packing island 4 from top to bottom, the top ends of the air supply main pipes 8 are respectively communicated with a plurality of back flushing pipes 20 through the sludge air stripping pipes 10, in the embodiment, eight back flushing pipes 20 are provided and perforated aeration pipes are adopted, two sludge air stripping pipes 10 are provided, the back flushing pipes 20 are arranged at the length of one quarter diameter of the packing island 4, and the starting and stopping of the air stripping pipes are controlled through a second valve 11 and a third valve 12; the back flushing pipe 20 is uniformly paved in the packing island 4 from the center to the outside, the top end is inserted into the bottom end of the sludge gas stripping air pipe 10, and the other end is inserted into the bottom end of the sludge lifting pipe 21; the sludge gas stripping air pipes 10 are vertically and uniformly distributed on the periphery of the packing island 4; the bottom end of the air supply main pipe 8 penetrates into the bottom of the oxidation pond and is inserted with a plurality of sewage lifting pipes 13, in the embodiment, four sewage lifting pipes 13 are adopted, a directional perforated pipe 14 is arranged at the part of the air supply main pipe 8 penetrating into the bottom of the oxidation pond, the periphery of the directional perforated pipe 14 is provided with scattered holes with the aperture of 1 millimeter, and an eave 15 is arranged above each scattered hole for ventilation and pollution prevention; the sewage lifting pipes 13 are uniformly arranged at the bottom of the oxidation pond and extend to the periphery of the oxidation pond to be connected with the water distribution pipe 19.
The ecological gabion 16 is surrounded by an iron wire net 17, the inside is filled with a filler 18, and the filler 18 adopts gravel, haydite and other materials; the inside of the ecological gabion 16 is averagely provided with an upper layer, a middle layer and a lower layer which are embedded with water distribution pipes 19, and the water distribution pipes 19 adopt perforated pipes.
The outer periphery of the packing island 4 is provided with a grid frame 5, the inside is filled with light packing 6, the top of the packing island 4 is provided with a fan 7, the output end of the fan 7 is communicated with an air supply main pipe 8, and the start and stop are controlled through a first valve 9; surrounding sludge collecting wells 27 are arranged around the packing islands 4, and a sludge lifting pipe 21 and a sludge gas stripping gas pipe 10 are arranged in the sludge collecting wells 27.
One side of the oxidation pond is provided with a water inlet pipe 22, and the other side is provided with a water outlet pipe 23, so that water can directly flow to a discharge port or a farmland or a woodland for use; the end of the water inlet pipe 22 is provided with a grid box 24, one side of the grid box 24 facing water is composed of grid plates 25, and the other five sides are sealed by dense partition plates 26.
The ecological floating blocks 28 are bound to form a whole on the water surface in the oxidation pond, the periphery of each ecological floating block 28 is fixedly formed through the mesh screen 31, the filling material 32 is arranged in each ecological floating block 28, and the contact area between water and air can be effectively increased through the floating ecological floating blocks 28 and the filling material 32 arranged in each ecological floating block, so that the content of dissolved oxygen in the whole oxidation pond is improved; meanwhile, a planting hole 29 is arranged in the center of the ecological floating block 28 for planting aquatic plants 30 such as canna, iris and the like.
The working principle of the application is as follows:
in the application, collected rural domestic sewage enters a grid box 24 through a water inlet pipe 22, and filtered by a grid plate 25, and then discharged water enters an oxidation pond to be mixed with pond water. Meanwhile, when the fan 7 works, the first valve 9 is opened, the second valve 11 and the third valve 12 are kept closed, compressed air is sent into the sewage lifting pipe 13 through the air supply main pipe 8, and under the action of the directional perforated pipe 14, on one hand, the air and water are fully mixed, so that the dissolved oxygen of the water body is greatly improved; on the other hand, the effective density in the pipe is reduced, gas stripping is formed under the action of the liquid level pressure, and water at the bottom of the oxidation pond is lifted to a water distribution pipe 19 in an ecological gabion 16 arranged on the slope of the oxidation pond along a sewage lifting pipe 13; at this time, the water discharged from the water distribution pipe 19 is near the ecological gabion 16, so that an aerobic environment is formed, a large amount of aerobic microorganisms are gathered in the ecological gabion 16 after a certain time, carbonization and nitration reactions are carried out, and organic matters and ammonia nitrogen are removed, so that nitrate nitrogen is generated. At the same time, due to the suction effect of the sewage riser 13, the water around the oxidation pond moves to the middle and enters the filling island 4. Because no oxygen is supplemented in the advancing process of the sewage, the dissolved oxygen of the sewage is gradually depleted, the sewage enters the filling island 4 to form an anoxic environment, a large number of anoxic microorganisms are accumulated around the filling, nitrate nitrogen in the sewage is subjected to denitrification reaction under the action of the microorganisms to generate nitrogen, and the nitrogen is discharged out of the water; the sewage is pumped from the middle tank bottom to the periphery of the oxidation pond, and moves to the middle under the action of the liquid level pressure difference, so that internal circulation is formed. The water outlet pipe 23 is arranged at the other end of the water inlet pipe 22, and the water discharged from the water distribution pipe 19 is discharged through the water outlet pipe 23 after being filtered by the ecological gabion 16. At the same time, suspended matters in the sewage move towards the middle along with the gradual water body, a part of suspended matters are deposited in the mud collecting well 27 under the action of gravity, and the rest of suspended matters are filtered by the filling islands 4 and then deposited in filling gaps. When the sewage lifting pipe 13 is not smooth in water inflow and the filling island 4 is blocked by sludge, the first valve 9 and the third valve 12 are closed, the second valve 11 is only opened, the filling island 4 performs back flushing aeration under the action of the fan 7 and the back flushing pipe 20, the surface of the fluidized filling is flushed, and the flushed sludge enters the sludge collecting well 27. The sludge collecting well 27 is used for discharging sludge periodically, only the third valve 12 is opened during sludge discharge, the first valve 9 and the second valve 11 are closed, compressed air generated by the fan 7 enters the sludge lifting pipe 21 through the sludge gas stripping pipe 10, and the sludge is lifted to the periphery of the oxidation pond under the gas stripping effect and is collected and treated by professionals; the ecological floating blocks 28 are arranged on the water surface around the oxidation pond, the contact area of water and air is increased through the filling materials 32 arranged in the floating ecological floating blocks 28, and meanwhile, bubbles generated by aeration in the oxidation pond are fully attached and absorbed, so that the overall dissolved oxygen of the oxidation pond is greatly improved, and meanwhile, the microbial load in the pond is also improved by utilizing the implantation preference of the filling materials 32, and the pollution treatment capacity of the oxidation pond is enhanced; aquatic plants 30 are planted on the ecological floating blocks 28, so that the sewage purifying capacity is further enhanced, and the surrounding environment of the oxidation pond is improved.
In order to prove the superiority and effectiveness of the technical scheme provided by the application, the embodiment carries out the following test based on the working principle:
the simulated production test is carried out by using the sewage inflow and water quality of a village in a certain mountain area, and the water inflow and water quality are designed as follows: design scale of water inflow 50m 3 And/d, designing the COD, ammonia nitrogen, TN and TP pollutant contents in the water quality of the inflow water to be 100mg/L, 20mg/L, 25mg/L and 1.5mg/L respectively, designing the water quality of the outflow water to meet the primary standard of the discharge standard of water pollutants of rural domestic sewage treatment facilities (DB 35/1869-2019), wherein the COD, ammonia nitrogen, TN and TP pollutant contents are 60mg/L, 8mg/L, 20mg/L and 1mg/L respectively, the top size of a test oxidation pond is 25 multiplied by 25m, the pond depth is 2m, the slope is 45 degrees, and the average hydraulic retention time is 23d. Gravel gabions with the thickness of 0.5m are paved on the slope, a filling island with the diameter of 2m is arranged in the middle of the oxidation pond, and light ceramsite filling is filled in the filling island. Blower power n=2.2 kW, air supply q=1.5 m 3 And/min. The pool water is filled with the prepared sewage at the beginning of the test,the indexes of the sewage are the limit values of the first-level standard of the wastewater pollutant emission standard of rural domestic sewage treatment facilities (DB 35/1869-2019), namely the contents of COD, ammonia nitrogen, TN and TP pollutants are respectively 60mg/L, 8mg/L, 20mg/L and 1mg/L. The sewage enters the oxidation pond to start running, the DO value around the pond is up to 6mg/L, the DO value at the center of the pond is below 0.5mg/L, and sludge is discharged 1 time per week. After running for 20 days, the surface of the filler island is basically formed with a biomembrane, after 35 days, the surface of the ecological gabion is provided with more biomembranes, and after 35 days, the effluent quality COD, ammonia nitrogen, TN and TP contents of the oxidation pond are about 30mg/L, 4mg/L, 10mg/L and 0.6mg/L respectively, which meet the design effluent standard.
The foregoing description is only illustrative of the present application and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes or direct or indirect application in other related technical fields are included in the scope of the present application.
Claims (8)
1. An energy-saving efficient circulating oxidation pond is characterized in that: the ecological stone lifting device comprises a filler island (4) and a stripping system, wherein the filler island (4) is arranged in the middle of an oxidation pond, ecological stone cages (16) are arranged on slopes around the oxidation pond, and the stripping system is arranged between the filler island (4) and the ecological stone cages (16); the air stripping system comprises an air feeding main pipe (8), a back flushing pipe (20) and a sludge air stripping air pipe (10), wherein the air feeding main pipe (8) is arranged in the center of a filler island (4) from top to bottom, the top ends of the air feeding main pipes (8) are respectively communicated with a plurality of back flushing pipes (20) through the sludge air stripping air pipe (10), the back flushing pipes (20) extend from the center to the outside in the filler island (4) and are uniformly paved, the top ends of the back flushing pipes are communicated with the bottom ends of the sludge air stripping air pipes (10), and the other ends of the sludge air stripping air pipes (10) are inserted into the bottom ends of sludge lifting pipes (21); the sludge gas stripping air pipes (10) are vertically and uniformly distributed on the periphery of the filler island (4); the bottom end of the air supply main pipe (8) penetrates into the bottom of the oxidation pond and is inserted with a plurality of sewage lifting pipes (13), and the sewage lifting pipes (13) are uniformly arranged at the bottom of the oxidation pond and extend to the periphery of the oxidation pond to be connected with the water distribution pipe (19).
2. The energy-saving and efficient circulating oxidation pond according to claim 1, wherein: an impermeable film (1) is paved on the slope and the bottom of the oxidation pond, and the impermeable film (1) adopts an HDPE film; the impermeable membrane (1) is fixed through an anchoring groove (2) which is arranged around the periphery of the oxidation pond, and a drainage ditch (3) is arranged at the top of the anchoring groove (2).
3. The energy-saving and efficient circulating oxidation pond according to claim 1, wherein: the ecological gabion (16) is surrounded by an iron wire mesh (17), and the inside of the ecological gabion is filled with a filler (18); the inside of the ecological gabion (16) is averagely provided with an upper layer, a middle layer and a lower layer which are embedded with water distribution pipes (19).
4. The energy-saving and efficient circulating oxidation pond according to claim 1, wherein: the outside of packing island (4) encloses and is equipped with grid frame (5), and inside packing light packing (6), and the top of packing island (4) is equipped with fan (7), and the output of fan (7) is linked together with air feed main pipe (8).
5. The energy-saving and efficient circulating oxidation pond according to claim 1, wherein: the backwash pipe (20) is arranged at a length of one quarter diameter of the packing island (4).
6. The energy-saving and efficient circulating oxidation pond according to claim 1, wherein: surrounding sludge collecting wells (27) are arranged around the packing island (4), and a sludge lifting pipe (21) and a sludge gas stripping pipe (10) are arranged in the sludge collecting wells (27).
7. The energy-saving and efficient circulating oxidation pond according to claim 1, wherein: a water inlet pipe (22) is arranged on one side of the oxidation pond, and a water outlet pipe (23) is arranged on the opposite side or the inclined opposite side; the tail end of the water inlet pipe (22) is provided with a grid box (24), one side surface of the grid box (24) facing water is composed of grid plates (25), and the other five side surfaces are sealed by a compact baffle plate (26).
8. The energy-saving and efficient circulating oxidation pond according to claim 1, wherein: the ecological floating blocks (28) are bound to form a whole on the water surface in the oxidation pond, the periphery of each ecological floating block (28) is fixedly formed through a mesh screen (31), and filling materials (32) are arranged in the ecological floating blocks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310960750.2A CN116924617A (en) | 2023-08-01 | 2023-08-01 | Energy-saving efficient circulating oxidation pond |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310960750.2A CN116924617A (en) | 2023-08-01 | 2023-08-01 | Energy-saving efficient circulating oxidation pond |
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| Publication Number | Publication Date |
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| CN116924617A true CN116924617A (en) | 2023-10-24 |
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| CN202310960750.2A Pending CN116924617A (en) | 2023-08-01 | 2023-08-01 | Energy-saving efficient circulating oxidation pond |
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