CN111484210B - Domestic sewage treatment system with oil separation and regulation functions and sewage treatment method thereof - Google Patents
Domestic sewage treatment system with oil separation and regulation functions and sewage treatment method thereof Download PDFInfo
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- CN111484210B CN111484210B CN202010508635.8A CN202010508635A CN111484210B CN 111484210 B CN111484210 B CN 111484210B CN 202010508635 A CN202010508635 A CN 202010508635A CN 111484210 B CN111484210 B CN 111484210B
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- 239000010865 sewage Substances 0.000 title claims abstract description 74
- 238000000926 separation method Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000033228 biological regulation Effects 0.000 title claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 53
- 239000010802 sludge Substances 0.000 claims abstract description 44
- 230000001105 regulatory effect Effects 0.000 claims abstract description 43
- 238000010992 reflux Methods 0.000 claims abstract description 37
- 239000003129 oil well Substances 0.000 claims abstract description 36
- 239000013049 sediment Substances 0.000 claims abstract description 10
- 239000000945 filler Substances 0.000 claims abstract description 9
- AHEWZZJEDQVLOP-UHFFFAOYSA-N monobromobimane Chemical compound BrCC1=C(C)C(=O)N2N1C(C)=C(C)C2=O AHEWZZJEDQVLOP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 208000034699 Vitreous floaters Diseases 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims description 27
- 238000011010 flushing procedure Methods 0.000 claims description 20
- 239000000126 substance Substances 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 claims description 4
- 230000009471 action Effects 0.000 claims description 3
- 238000005192 partition Methods 0.000 claims description 3
- 238000011001 backwashing Methods 0.000 claims 1
- 239000000084 colloidal system Substances 0.000 abstract description 5
- 230000008021 deposition Effects 0.000 abstract description 5
- 239000007789 gas Substances 0.000 description 21
- 238000005516 engineering process Methods 0.000 description 8
- 239000012528 membrane Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000005273 aeration Methods 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004065 wastewater treatment 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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2301/00—General aspects of water treatment
- C02F2301/04—Flow arrangements
- C02F2301/046—Recirculation with an external loop
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
-
- 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
-
- 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)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention discloses a domestic sewage treatment system with oil separation and storage regulation functions and a sewage treatment method thereof, wherein the domestic sewage treatment system comprises a filter tank, a filter oil well, an adjusting tank, an anaerobic tank and an aerobic tank which are sequentially communicated from front to back, a basket grid is arranged in the filter tank, the lower part of the filter tank is communicated with the lower part of the filter oil well, the bottom of the regulating tank is also provided with a lifting pump, the lifting pump is connected with the upper part of one side of the anaerobic tank through a lifting pipe, one side of the bottom of the lifting pipe is connected with a rotatable backwash pipe, MBBR fillers are uniformly distributed in the anaerobic tank and the aerobic tank, and sludge at the bottom of the aerobic tank is refluxed through a gas stripping sludge reflux pipeline. The invention reduces the occupied area, can intercept suspended matters and floaters in sewage, intercept suspended matters and part of colloid which block the water pump impeller and the pipeline valve and increase the load of a subsequent treatment unit, can disturb the bottom of the regulating tank, avoid sediment deposition at the bottom of the regulating tank, and can be effectively applied to places such as civil, scenic spots, rural areas and the like.
Description
Technical Field
The invention belongs to the field of sewage treatment, and particularly relates to a domestic sewage treatment system with an oil separation and storage regulation function and a sewage treatment method thereof.
Background
Currently, most domestic sewage treatment mainly adopts a BAF process and an MBR process;
the main working principle of the BAF technology, namely a Biological Aerated Filter (BAF), is that microorganisms in biological films adsorbed on filter materials in a reactor are subjected to oxidative decomposition, adsorption and retention effects of the filter materials and the microbial films and food chain grading predation effects formed along the water flow direction.
The main disadvantages of BAF processes are: the cost is obviously increased: the electricity consumption of the aeration biological filter for sewage plants is about 0.11 degree when treating one ton of sewage. In addition, the amount of backwash water is large, the design scale of the sewage plant is 6 ten thousand tons, the current backwash water is up to more than 1.3 ten thousand tons, the treatment capacity of the sewage plant is reduced, and waste is caused in the aspects of power consumption, medicament addition and the like. The daily management needs to be fine: because BAF water is relatively low in BOD and high in ammonia nitrogen, carbon sources such as methanol and the like are required to be added, the addition amount is required to be well mastered, and the normal state of microorganisms is ensured. The aeration rate also needs to be mastered, ammonia nitrogen is high due to insufficient aeration rate, and sand grains are washed away due to excessive aeration rate.
The MBR technology, namely a membrane-bioreactor (MBR), is a sewage biological treatment technology formed by combining membrane separation and biological treatment technologies, integrates the advantages of the membrane treatment technology and the biological treatment technology, utilizes membrane separation equipment to hold active sludge and macromolecular substances in a biochemical reaction tank, omits a secondary sedimentation tank, and holds microorganism flocs and macromolecular organic substances in the held active sludge mixed solution in the bioreactor, so that the bioreactor obtains high biological concentration and prolongs the retention time of organic solids, and therefore, the membrane-bioreactor technology greatly strengthens the functions of the bioreactor through the membrane separation technology.
The main disadvantages of the MBR process are: ① The investment is large, the manufacturing cost of the membrane component is high, and the investment of engineering is increased by about 30% -50% compared with the conventional treatment method; and the membrane component generally has a service life of about 5 years, and needs to be replaced, so that the operation cost is high. ② High-strength aeration, high energy consumption caused by high membrane driving pressure of the mud-water separation with increased flow rate for reducing membrane pollution, and great increase of running electricity cost; meanwhile, the high-strength aeration causes far too high concentration of dissolved oxygen in the reflux mud-water mixture, and is difficult to meet strict requirements of anoxic denitrification and anaerobic dephosphorization on the dissolved oxygen, so that the denitrification and dephosphorization effects are poor, and the index requirements of total nitrogen and total phosphorus in the effluent cannot be ensured. ③ The processing equipment is more and more complex, has high requirement on automation of an operating system and has high requirement on operation and maintenance personnel.
Therefore, at present, a large amount of integrated equipment construction is being carried out in China aiming at the problems of domestic sewage treatment and the like in civil, scenic spots, rural areas and the like. However, the traditional integrated equipment is characterized in that the grating pool, the oil separation pool, the regulating pool and the biochemical section are arranged separately, so that the occupied area is large.
Moreover, the existing integrated equipment is not provided with a back flushing system in the regulating tank, and the sediments are retained for a long time, so that the water quality in the regulating tank is poor, and the sludge at the bottom of the tank is accumulated. Causing great damage to the operation of equipment and instruments of the regulating tank. Meanwhile, the long-time full tank reduces the regulation and storage functions of the regulating tank.
Disclosure of Invention
The invention aims to solve the defects and shortcomings in the prior art, and provides a domestic sewage treatment system with oil separation and storage regulation functions and a sewage treatment method thereof, wherein a filter tank, an oil separation well, an adjusting tank, an anaerobic tank and an aerobic tank are integrated together, the occupied area is reduced, a basket grid is integrated in the filter tank, suspended matters and floaters in sewage are intercepted, suspended matters and part of colloid which block a water pump impeller and a pipeline valve and increase the load of a subsequent treatment unit are intercepted, the adjusting tank has lifting and back flushing functions, the bottom of the adjusting tank is disturbed, sediment deposition at the bottom of the adjusting tank is avoided, and the domestic sewage treatment system can be effectively applied to places such as civil hosts, scenic spots and rural areas.
The technical scheme of the invention is as follows: the utility model provides a take domestic sewage treatment system of oil removal regulation function, is by preceding back including filtering ponds, oil filter well, equalizing basin, anaerobism pond and the good oxygen pond that communicate in proper order, sets up sewage inlet in one side upper portion of filtering ponds, sets up clear water export in one side upper portion of good oxygen pond, sets up the oil drain port in one side upper portion of oil filter well, the inside of filtering ponds is equipped with the basket grid, and the lower part of filtering ponds and the lower part intercommunication of oil filter well, the bottom of equalizing basin still is equipped with the elevator pump, the elevator pump is connected with one side upper portion of anaerobism pond through a riser, one side of the bottom of riser is connected with rotatable backwash pipe, evenly distributed has MBBR filler in anaerobism pond and the good oxygen pond, the mud of good oxygen pond bottom is through the back flow of air stripping mud backward flow pipeline.
The invention integrates the filter tank, the oil separation well, the regulating tank, the anaerobic tank and the aerobic tank together, reduces the occupied area, integrates the basket grating, intercepts suspended matters and floating matters in sewage, intercepts suspended matters and partial colloid which block the water pump impeller and the pipeline valve and increase the load of a subsequent treatment unit, and the regulating tank has lifting and back flushing functions, perturbs the bottom of the regulating tank, avoids sediment deposition at the bottom of the regulating tank, and can be effectively applied to places such as civil, scenic spots, rural areas and the like.
Preferably, the inside of filtering ponds is equipped with the backup pad of cooperation basket grid, be equipped with a plurality of water holes in the backup pad, the height of basket grid is less than sewage inlet's height, sewage inlet department is equipped with the filter baffle of cooperation basket grid, the width of basket grid and the width assorted of filtering ponds.
The structure further ensures the convenience and stability of the basket grid, and simultaneously ensures the removal effect of the filter tank on floaters and suspended matters.
Preferably, one end of the supporting plate is fixed on one side of the filtering tank, the other end of the supporting plate penetrates through the filtering oil well and then is fixed on one side of the filtering oil well, two lower guide plates and an upper guide plate are arranged in the filtering oil well, the bottom of each lower guide plate is fixed on the supporting plate, a gap is reserved between the top of each lower guide plate and the top of the filtering oil well, the top of each upper guide plate is fixed on the top of the filtering oil well, a gap is reserved between the bottom of each upper guide plate and the supporting plate, and the height of each oil drain port is higher than that of each lower guide plate.
The structure facilitates the arrangement of a plurality of guide plates inside the oil filtering well, thereby ensuring the removal effect of the oil filtering well on the oil substances.
Preferably, the two lower guide plates are respectively a first lower guide plate positioned at the front side of the oil drain opening and a second lower guide plate positioned at the rear side of the oil drain opening, the upper guide plate is positioned between the oil drain opening and the second lower guide plate, the height of the first lower guide plate is matched with the height of the basket grid, the height of the second lower guide plate is higher than that of the first lower guide plate, a drain pipe matched with the regulating tank is arranged at the upper part of one side of the oil filtering well, and the height of the drain pipe is matched with the height of the second lower guide plate.
The structure further ensures the removal effect of the oil filtering well on the oil substances, and simultaneously ensures the smoothness and reliability of water outlet of the oil filtering well.
Preferably, the lifting pump is arranged at the bottom of the regulating tank through a water pump bracket, the bottom of the lifting pipe is connected with a shunt pipe, the rotatable back flushing pipe is connected to the shunt pipe through a rotary joint, and a flushing nozzle is arranged at the front end of the rotatable back flushing pipe.
The structure ensures that the installation of the lifting pump is firm and reliable, and simultaneously ensures the rotation stability and reliability of the rotatable backwash tube and the flushing stability and reliability of the rotatable backwash tube at the bottom of the adjusting tank.
Preferably, the gas stripping sludge reflux pipeline comprises a vertical gas stripping sludge reflux pipeline and a transverse gas stripping sludge reflux pipeline connected to the top of the vertical gas stripping sludge reflux pipeline, the vertical gas stripping sludge reflux pipeline is arranged on the clear water outlet side of the aerobic tank, and the transverse gas stripping sludge reflux pipeline is arranged on the tops of the aerobic tank and the anaerobic tank.
The structure ensures that the gas stripping sludge reflux pipeline carries out gas stripping reflux on the sludge in the aerobic tank more stably and reliably.
Preferably, the bottom of the vertical gas stripping sludge reflux pipeline is aligned to the bottom of the clean water outlet side of the aerobic tank, a riser pipe interface matched with a riser pipe is arranged on the anaerobic tank, the height of the horizontal gas stripping sludge reflux pipeline is higher than that of the riser pipe interface, and the height of the riser pipe interface is higher than that of the clean water outlet.
The structure further ensures that the water outlet of the regulating tank is pumped into the anaerobic tank more stably and reliably, and simultaneously further ensures that the sludge gas stripping and backflow at the bottom of the aerobic tank are more stable and reliable.
Preferably, the height of the sewage inlet is matched with the height of the clear water outlet, and the duckbill valve is arranged at the clear water outlet.
The structure ensures that the clean water flowing out of the clean water outlet is more stable and reliable, and meanwhile, the clean water can be prevented from flowing back.
Preferably, the filter tank, the filter oil well, the regulating tank, the anaerobic tank and the aerobic tank are arranged in the same shell, a supporting base is arranged at the bottom of the shell, and lifting lugs are arranged at two sides of the top of the shell.
The structure further ensures that the integration of the filter tank, the filter oil well, the regulating tank, the anaerobic tank and the aerobic tank is firm, and simultaneously, the integral hoisting of the structure is convenient, and the installation of the structure is stable and reliable.
A sewage treatment method of a domestic sewage treatment system with an oil separation and storage regulation function comprises the following steps:
1) Sewage automatically flows into the filter tank through the sewage inlet, most suspended matters and floaters in the sewage are intercepted by the action of the filter partition plate and the basket grating, the effluent of the filter tank enters the filter oil well, and grating residues are removed periodically through the basket grating;
2) The oily substances in the sewage are discharged from an oil discharge port after being treated by a filter oil well, and the discharged water of the filter oil well enters an adjusting tank;
3) After sewage is treated by the regulating tank, the effluent of the regulating tank enters the anaerobic tank by the lifting pump, and a rotatable backwash pipe is arranged at the bottom of the regulating tank to flush the bottom of the regulating tank so as to prevent sediment accumulation;
4) Sewage enters an aerobic tank after being treated by an anaerobic tank, and is finally discharged from a clear water outlet after being treated by the aerobic tank; the filler in the anaerobic tank and the aerobic tank adopts MBBR filler, and the sludge reflux in the aerobic tank adopts a stripping sludge reflux pipeline.
The invention integrates the filter tank, the oil separation well, the regulating tank, the anaerobic tank and the aerobic tank together, reduces the occupied area, integrates the basket grating, intercepts suspended matters and floating matters in sewage, intercepts suspended matters and partial colloid which block the water pump impeller and the pipeline valve and increase the load of a subsequent treatment unit, and the regulating tank has lifting and back flushing functions, perturbs the bottom of the regulating tank, avoids sediment deposition at the bottom of the regulating tank, and can be effectively applied to places such as civil, scenic spots, rural areas and the like.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the rotatable backwash tube assembly of the present invention;
The device comprises a filter tank 1, a filter well 3, a regulating tank 4, an anaerobic tank 5, an aerobic tank 6, a sewage inlet 7, a clear water outlet 8, an oil drain port 9, a basket grid 10, a filter baffle 11, a lifting pump 12, a lifting pipe 13, a rotatable backwash pipe 14, MBBR packing 15, a gas stripping sludge return pipeline 16, a support plate 17, an upper guide plate 18, a first lower guide plate 19, a second lower guide plate 20, a drain pipe 21, a water pump bracket 22, a shunt pipe 23, a rotary joint 24, a flushing nozzle 25, a duckbill valve 26, a shell 27, a support base 28 and a lifting lug.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings, without limiting the scope of the invention.
As shown in figures 1 and 2, the domestic sewage treatment system with the oil separation and storage regulation functions comprises a filter tank 1, a filter oil well 2, an adjusting tank 3, an anaerobic tank 4 and an aerobic tank 5 which are sequentially communicated from front to back, wherein a sewage inlet 6 is arranged at the upper part of one side of the filter tank 1, a clear water outlet 7 is arranged at the upper part of one side of the aerobic tank 5, an oil drain port 8 is arranged at the upper part of one side of the filter oil well 2, a basket grid 9 is arranged in the filter tank 1, the lower part of the filter tank 1 is communicated with the lower part of the filter oil well 2, a lifting pump 11 is further arranged at the bottom of the adjusting tank 3, the lifting pump 11 is connected with the upper part of one side of the anaerobic tank 4 through a lifting pipe 12, a rotatable back flushing pipe 13 is connected with one side of the bottom of the lifting pipe 12, MBBR packing 14 is uniformly distributed in the anaerobic tank 4 and the aerobic tank 5, and sludge at the bottom of the aerobic tank 5 is refluxed through a gas stripping sludge reflux pipeline 15. The inside of filtering ponds 1 is equipped with the backup pad 16 of cooperation basket grid 9, is equipped with a plurality of water holes on the backup pad 16, and the height of basket grid 9 is less than the height of sewage import 6, and sewage import 6 department is equipped with the filter baffle 10 of cooperation basket grid 9, and the width of basket grid 9 and the width assorted of filtering ponds 1. One end of the supporting plate 16 is fixed on one side of the filter tank 1, the other end of the supporting plate 16 penetrates through the filter oil well 2 and then is fixed on one side of the filter oil well 2, two lower guide plates and an upper guide plate 17 are arranged in the filter oil well 2, the bottoms of the lower guide plates are fixed on the supporting plate 16, a gap is reserved between the tops of the lower guide plates and the tops of the filter oil well 2, the tops of the upper guide plates 17 are fixed on the tops of the filter oil well 2, a gap is reserved between the bottoms of the upper guide plates 17 and the supporting plate 16, and the height of the oil drain port 8 is higher than that of the two lower guide plates. The two lower guide plates are respectively a first lower guide plate 18 positioned at the front side of the oil drain port 8 and a second lower guide plate 19 positioned at the rear side of the oil drain port 8, the upper guide plate 17 is positioned between the oil drain port 8 and the second lower guide plate 19, the height of the first lower guide plate 18 is matched with that of the basket grid 9, the height of the second lower guide plate 19 is higher than that of the first lower guide plate 18, a drain pipe 20 matched with the regulating tank 3 is arranged at the upper part of one side of the oil filtering well 2, and the height of the drain pipe 20 is matched with that of the second lower guide plate 19. The lifting pump 11 is arranged at the bottom of the regulating tank 3 through a water pump bracket 21, the bottom of the lifting pipe 12 is connected with a shunt pipe 22, the rotatable back flushing pipe 13 is connected with the shunt pipe 22 through a rotary joint 23, and a flushing nozzle 24 is arranged at the front end of the rotatable back flushing pipe 13. The gas stripping sludge reflux pipeline 15 comprises a vertical gas stripping sludge reflux pipeline and a transverse gas stripping sludge reflux pipeline connected to the top of the vertical gas stripping sludge reflux pipeline, the vertical gas stripping sludge reflux pipeline is arranged on the side of a clear water outlet 7 of the aerobic tank 5, and the transverse gas stripping sludge reflux pipeline is arranged on the tops of the aerobic tank 5 and the anaerobic tank 4. The bottom of the vertical gas stripping sludge reflux pipeline is aligned to the bottom of the side of the clear water outlet 7 of the aerobic tank 5, a riser pipe interface matched with the riser pipe 12 is arranged on the anaerobic tank 4, the height of the horizontal gas stripping sludge reflux pipeline is higher than that of the riser pipe interface, and the height of the riser pipe interface is higher than that of the clear water outlet 7. The height of the sewage inlet 6 is matched with the height of the clean water outlet 7, and the clean water outlet 7 is provided with a duckbill valve 25. the filter tank 1, the filter oil well 2, the regulating tank 3, the anaerobic tank 4 and the aerobic tank 5 are arranged in the same shell 26, a supporting base 27 is arranged at the bottom of the shell 26, and lifting lugs 28 are arranged at two sides of the top of the shell 26.
A sewage treatment method of a domestic sewage treatment system with an oil separation and storage regulation function comprises the following steps:
1) Sewage automatically flows into the filter tank through the sewage inlet, most suspended matters and floaters in the sewage are intercepted by the action of the filter partition plate and the basket grating, the effluent of the filter tank enters the filter oil well, and grating residues are removed periodically through the basket grating;
2) The oily substances in the sewage are discharged from an oil discharge port after being treated by a filter oil well, and the discharged water of the filter oil well enters an adjusting tank;
3) After sewage is treated by the regulating tank, the effluent of the regulating tank enters the anaerobic tank by the lifting pump, and a rotatable backwash pipe is arranged at the bottom of the regulating tank to flush the bottom of the regulating tank so as to prevent sediment accumulation;
4) Sewage enters an aerobic tank after being treated by an anaerobic tank, and is finally discharged from a clear water outlet after being treated by the aerobic tank; the filler in the anaerobic tank and the aerobic tank adopts MBBR filler, and the sludge reflux in the aerobic tank adopts a stripping sludge reflux pipeline.
The working process of the rotatable backwash tube at the bottom of the adjusting tank is as follows: the water in the regulating tank is lifted to the anaerobic tank for biochemical treatment through the lifting pipe, and a small part of water is split from the split pipe and flows through the rotary joint and then is flushed through the flushing nozzle on the rotatable back flushing pipe.
The invention relates to a set of monomer equipment integrating a filter tank, an oil isolation well, an adjusting tank and a biochemical section. Wherein the filter tank is integrated with a basket grid to intercept suspended matters and floaters in sewage, and intercept suspended matters and part of colloid which block a water pump impeller and a pipeline valve and increase the load of a subsequent treatment unit. The regulating tank has lifting and back flushing functions, and the bottom of the regulating tank is disturbed to avoid sediment deposition at the bottom of the regulating tank. The biochemical section integrates an anaerobic and an aerobic process. Can be effectively applied to the fields of domestic sewage treatment in civilian, scenic spots, rural areas and the like. Solves the problem that the occupied area of the site of the existing sewage treatment system is overlarge, and adopts integrated equipment to reduce the occupied area.
Compared with the prior art, the invention has the following positive effects:
1. At present, a sewage treatment system which is built by combining a grating, an oil separation tank, an adjusting tank and a biochemical system is not available in the industry, the occupied area is reduced by the combined system building, and the treatment pressure of a subsequent treatment system is reduced;
2. the adjusting tank is provided with an adjustable flushing port, and the bottom of the adjusting tank is flushed to prevent sediment accumulation;
3. the biochemical tank adopts stripping sludge reflux;
4. The system integrates the adjusting function to cope with the fluctuation of different water quality and water quantity, has better impact load resistance and adaptability, and greatly improves the utilization rate of equipment;
5. The floor space is relatively compact when sewage treatment projects are implemented nationwide at present, the floor space is greatly reduced through functional integration, and meanwhile, the system can be arranged by utilizing overground and underground spaces, so that the treatment effect is not influenced, and the floor space is saved to the greatest extent.
The effluent treated by the method meets the first-class A and above standard in pollutant emission Standard of urban wastewater treatment plant (GB 18918-2002).
Claims (6)
1. A domestic sewage treatment system with an oil separation and storage regulation function is characterized in that: the sewage treatment device comprises a filter tank, a filter oil well, an adjusting tank, an anaerobic tank and an aerobic tank which are sequentially communicated from front to back, wherein a sewage inlet is formed in the upper part of one side of the filter tank, a clear water outlet is formed in the upper part of one side of the aerobic tank, an oil drain port is formed in the upper part of one side of the filter oil well, a basket grid is arranged in the filter tank, the lower part of the filter tank is communicated with the lower part of the filter oil well, a lifting pump is further arranged at the bottom of the adjusting tank, the lifting pump is connected with the upper part of one side of the anaerobic tank through a lifting pipe, a rotatable backwashing pipe is connected with one side of the bottom of the lifting pipe, MBBR fillers are uniformly distributed in the anaerobic tank and the aerobic tank, and sludge at the bottom of the aerobic tank is refluxed through a gas stripping sludge reflux pipeline; the filter tank is characterized in that a supporting plate matched with the basket grating is arranged in the filter tank, a plurality of water passing holes are formed in the supporting plate, the height of the basket grating is lower than that of the sewage inlet, a filter baffle matched with the basket grating is arranged at the sewage inlet, and the width of the basket grating is matched with that of the filter tank; one end of the supporting plate is fixed on one side of the filtering tank, the other end of the supporting plate penetrates through the filtering oil well and then is fixed on one side of the filtering oil well, two lower guide plates and an upper guide plate are arranged in the filtering oil well, the bottom of each lower guide plate is fixed on the supporting plate, a gap is reserved between the top of each lower guide plate and the top of the filtering oil well, the top of each upper guide plate is fixed on the top of the filtering oil well, a gap is reserved between the bottom of each upper guide plate and the supporting plate, and the height of each oil drain port is higher than that of each lower guide plate; the two lower guide plates are respectively a first lower guide plate positioned at the front side of the oil drain port and a second lower guide plate positioned at the rear side of the oil drain port, the upper guide plate is positioned between the oil drain port and the second lower guide plate, the height of the first lower guide plate is matched with that of the basket grid, the height of the second lower guide plate is higher than that of the first lower guide plate, a drain pipe matched with an adjusting tank is arranged at the upper part of one side of the oil filtering well, and the height of the drain pipe is matched with that of the second lower guide plate; the lifting pump is arranged at the bottom of the regulating tank through a water pump bracket, the bottom of the lifting pipe is connected with a shunt pipe, the rotatable back flushing pipe is connected to the shunt pipe through a rotary joint, and a flushing nozzle is arranged at the front end of the rotatable back flushing pipe.
2. The domestic sewage treatment system with oil separation and regulation functions according to claim 1, wherein: the air-stripping sludge reflux pipeline comprises a vertical air-stripping sludge reflux pipeline and a transverse air-stripping sludge reflux pipeline connected to the top of the vertical air-stripping sludge reflux pipeline, the vertical air-stripping sludge reflux pipeline is arranged on the clear water outlet side of the aerobic tank, and the transverse air-stripping sludge reflux pipeline is arranged on the tops of the aerobic tank and the anaerobic tank.
3. The domestic sewage treatment system with oil separation and regulation functions according to claim 2, wherein: the bottom of the vertical gas stripping sludge reflux pipeline is aligned with the bottom of the clean water outlet side of the aerobic tank, a riser pipe interface matched with a riser pipe is arranged on the anaerobic tank, the height of the horizontal gas stripping sludge reflux pipeline is higher than that of the riser pipe interface, and the height of the riser pipe interface is higher than that of the clean water outlet.
4. The domestic sewage treatment system with oil separation and regulation functions according to claim 1, wherein: the height of the sewage inlet is matched with the height of the clear water outlet, and the duckbill valve is arranged at the clear water outlet.
5. The domestic sewage treatment system with oil separation and regulation functions according to claim 1, wherein: the filter tank, the filter oil well, the regulating tank, the anaerobic tank and the aerobic tank are arranged in the same shell, a supporting base is arranged at the bottom of the shell, and lifting lugs are arranged at two sides of the top of the shell.
6. A sewage treatment method of a domestic sewage treatment system with an oil separation and storage regulation function as claimed in claim 1, characterized by comprising the steps of: the method comprises the following steps:
1) Sewage automatically flows into the filter tank through the sewage inlet, most suspended matters and floaters in the sewage are intercepted by the action of the filter partition plate and the basket grating, the effluent of the filter tank enters the filter oil well, and grating residues are removed periodically through the basket grating;
2) The oily substances in the sewage are discharged from an oil discharge port after being treated by a filter oil well, and the discharged water of the filter oil well enters an adjusting tank;
3) After sewage is treated by the regulating tank, the effluent of the regulating tank enters the anaerobic tank by the lifting pump, and a rotatable backwash pipe is arranged at the bottom of the regulating tank to flush the bottom of the regulating tank so as to prevent sediment accumulation;
4) Sewage enters an aerobic tank after being treated by an anaerobic tank, and is finally discharged from a clear water outlet after being treated by the aerobic tank; the filler in the anaerobic tank and the aerobic tank adopts MBBR filler, and the sludge reflux in the aerobic tank adopts a stripping sludge reflux pipeline.
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| CN117658331A (en) * | 2023-12-22 | 2024-03-08 | 哈尔滨凯纳科技股份有限公司 | A gas stripping and reflux device for rural sewage treatment tanks |
| CN118577053A (en) * | 2024-05-14 | 2024-09-03 | 湖南中车环境工程有限公司 | A multifunctional finished product regulating tank for sewage treatment |
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