CN110550828A - Novel sewage treatment system and treatment method - Google Patents
Novel sewage treatment system and treatment method Download PDFInfo
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- CN110550828A CN110550828A CN201910950883.5A CN201910950883A CN110550828A CN 110550828 A CN110550828 A CN 110550828A CN 201910950883 A CN201910950883 A CN 201910950883A CN 110550828 A CN110550828 A CN 110550828A
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- 239000010865 sewage Substances 0.000 title claims abstract description 94
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000004062 sedimentation Methods 0.000 claims abstract description 65
- 238000001914 filtration Methods 0.000 claims abstract description 39
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 28
- 230000000813 microbial effect Effects 0.000 claims abstract description 28
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 28
- 239000001301 oxygen Substances 0.000 claims abstract description 28
- 230000020477 pH reduction Effects 0.000 claims abstract description 27
- 230000007062 hydrolysis Effects 0.000 claims abstract description 25
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 25
- 239000010802 sludge Substances 0.000 claims abstract description 19
- 239000000945 filler Substances 0.000 claims abstract description 10
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 10
- 238000005273 aeration Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 78
- 239000012528 membrane Substances 0.000 claims description 19
- 230000000249 desinfective effect Effects 0.000 claims description 16
- 239000007789 gas Substances 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 239000004575 stone Substances 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 230000003301 hydrolyzing effect Effects 0.000 claims description 2
- 230000001105 regulatory effect Effects 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 5
- 239000012535 impurity Substances 0.000 description 5
- 239000005416 organic matter Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 244000005700 microbiome Species 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 210000005056 cell body Anatomy 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 239000006228 supernatant Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 230000009102 absorption Effects 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 230000001151 other effect Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000006864 oxidative decomposition reaction Methods 0.000 description 1
- 230000036284 oxygen consumption Effects 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 241001148471 unidentified anaerobic bacterium Species 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
- 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
- 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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
-
- 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
- C02F2303/04—Disinfection
-
- 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
- C02F2303/06—Sludge reduction, e.g. by lysis
-
- 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
-
- 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
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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)
Abstract
The invention discloses a novel sewage treatment system, which comprises a hydrolysis acidification tank, a primary aerobic tank, an anaerobic tank, a secondary aerobic tank, a sedimentation tank and a filtering disinfection tank which are sequentially communicated, wherein microbial fillers are uniformly distributed in the hydrolysis acidification tank, the primary aerobic tank, the anaerobic tank and the secondary aerobic tank, wherein oxygen aeration devices for increasing the oxygen content in the tanks are respectively arranged in the primary aerobic tank and the secondary aerobic tank, the bottom of the anaerobic tank is communicated with the bottom of the sedimentation tank through a connecting pipeline, and the tops of the secondary aerobic tank and the sedimentation tank are communicated with the primary aerobic tank through conveying pipelines. The invention also discloses a novel sewage treatment method, and the novel sewage treatment system and the novel sewage treatment method can recycle the microbial strains used in the sewage treatment process, improve the utilization rate of the microbial strains, reduce the production cost, consume the sludge in the sewage treatment process and reduce the generation of the sludge.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a novel sewage treatment system and a novel sewage treatment method.
Background
Along with the development of society and the improvement of the living standard of people, people pay more and more attention to the environmental protection problem, and sewage treatment is an important part of the environmental protection problem. In the process of sewage treatment, strict requirements are placed on water quality indexes such as organic matters, ammonia nitrogen, total phosphorus and the like in sewage, and the key point of sewage treatment is to reduce the contents of the organic matters, the ammonia nitrogen, the total phosphorus and the like in the sewage. The sewage has the conditions of microorganism growth and reproduction, so that the microorganisms can obtain nutrients from the sewage and degrade and utilize harmful substances, thereby purifying the sewage, and in the existing sewage treatment technology, the aims of effectively removing organic matters, ammonia nitrogen, total phosphorus and other substances in the sewage are achieved through the adsorption, absorption, degradation, oxidation, synthesis and other effects of the microorganisms attached to the biological filler. However, the existing sewage treatment equipment adopting the biological filler has a low utilization rate of microbial strains, the content of the microbial strains in the water is consumed quickly, the microbial strains need to be fed into the water frequently, on one hand, the sewage treatment effect is not ideal due to the untimely supplement of the microbial strains, and on the other hand, the sewage treatment cost is increased.
Disclosure of Invention
The present invention is directed to solve at least one of the above mentioned problems, and provides a novel sewage treatment system and a novel sewage treatment method, which can recycle the microbial strains used in the sewage treatment process, improve the utilization rate of the microbial strains, reduce the production cost, consume the sludge in the sewage treatment process, and reduce the generation of the sludge.
In order to realize the aim, the invention provides a novel sewage treatment system which comprises a hydrolysis acidification tank, a primary aerobic tank, an anaerobic tank, a secondary aerobic tank, a sedimentation tank and a filtering disinfection tank which are communicated in sequence, wherein microbial fillers are uniformly distributed in the hydrolysis acidification tank, the primary aerobic tank, the anaerobic tank and the secondary aerobic tank, wherein, the bottom of the hydrolysis acidification tank is provided with a water supply device for supplying sewage into the tank body, the filtering and disinfection tank is provided with a water outlet pipe, the primary aerobic tank and the secondary aerobic tank are both provided with oxygen aeration devices for increasing the oxygen amount in the tanks, the bottom of the anaerobic tank is communicated with the bottom of the sedimentation tank through a connecting pipeline, so that the silt of sedimentation tank bottom can let in to the bottom of anaerobism pond, and the top of second grade good oxygen pond and sedimentation tank all communicates with one-level good oxygen pond through pipeline to carry the partial sewage on second grade good oxygen pond and sedimentation tank upper portion to one-level good oxygen pond in.
Further, adjacent two of the hydrolytic acidification tank, the first-stage aerobic tank, the anaerobic tank and the second-stage aerobic tank are communicated through a water delivery pipe, the water delivery pipe comprises a first water delivery pipe and a second water delivery pipe, the front end of the first water delivery pipe is arranged on the upper portion of the last tank body and provided with a plurality of water inlet holes, the rear end of the first water delivery pipe is arranged on the upper portion of the next tank body, the upper end of the second water delivery pipe is communicated with the rear end of the first water delivery pipe, and the lower end of the second water delivery pipe extends to the lower portion of the tank body and is provided with a plurality.
Furthermore, the water supply device comprises a water supply pipe which is arranged at the bottom of the regulating tank in a bending and winding manner, a plurality of water outlets are distributed on the water supply pipe along the length direction of the water supply pipe, and one-way check valves are arranged on the water outlets.
Furthermore, the middle part of the hydrolysis acidification tank is provided with a filtering membrane, the hydrolysis acidification tank is divided into an upper half part and a lower half part by the filtering membrane, and the water distributor is arranged on the lower half part, so that the sewage of the lower half part flows to the upper half part after being filtered by the filtering membrane.
Furthermore, the pump body is arranged on the conveying pipeline, one end of the pump body extends into the middle of the first-stage aerobic tank, and the other end of the pump body is provided with two conveying branch pipes which respectively extend into the middle of the second-stage aerobic tank and the middle of the sedimentation tank.
Further, the oxygen aeration device comprises an air supply pipeline, one end of the oxygen supply pipeline is connected with an air supply device, the other end of the oxygen supply pipeline is provided with two branch pipes which are communicated to the bottoms of the first-stage aerobic pool and the second-stage aerobic pool respectively, air supply heads are installed on the two branch pipes, and a plurality of air outlet holes are distributed in the air supply heads.
Further, the second-stage aerobic tank is communicated with the sedimentation tank through a third water conveying pipe, one end of the third water conveying pipe is communicated with the upper portion of the second-stage aerobic tank, the other end of the third water conveying pipe is communicated to the middle portion of the sedimentation tank, the sedimentation tank is communicated with the filtering and disinfecting tank through a fourth water conveying pipe, one end of the fourth water conveying pipe is communicated with the upper portion of the sedimentation tank, and the other end of the fourth water conveying pipe is communicated to the bottom of the filtering and disinfecting tank.
Further, the multilayer filter layers are distributed in the filtering and disinfecting tank along the height direction of the tank body, each layer of filter membrane comprises stone grains and active carbon particles, the particle sizes of the stone grains and the active carbon particles are gradually reduced from the lower layer to the upper layer, and the two adjacent filter layers are separated through the filter membranes.
Further, the hydrolysis acidification tank, the first-stage aerobic tank, the anaerobic tank, the second-stage aerobic tank, the sedimentation tank and the filtering and disinfecting tank are all containers made of stainless steel materials, and an anti-corrosion film is arranged on the inner wall of the sedimentation tank.
The invention also provides a novel sewage treatment method, which adopts any sewage treatment system to treat sewage in sequence through the hydrolysis acidification tank, the primary aerobic tank, the anaerobic tank, the secondary aerobic tank, the sedimentation tank and the filtering and disinfection tank, wherein a small part of sewage at the upper parts of the secondary aerobic tank and the sedimentation tank is pumped into the primary aerobic tank through a conveying pipeline, and the bottom of the sedimentation tank is communicated with the bottom of the anaerobic tank through a connecting pipeline, so that sludge in the sedimentation tank can flow into the anaerobic tank through the connecting pipeline.
The beneficial effects are that: compared with the prior art, the novel sewage treatment system and the novel sewage treatment method have the advantages that microbial strains utilized in the sewage treatment process comprise anaerobic strains and aerobic strains, the sedimentation tank is communicated with the bottom of the anaerobic tank through the connecting pipeline, the sludge at the bottom of the sedimentation tank can flow back to the anaerobic tank, the anaerobic strains in the sludge can be repeatedly recycled in the anaerobic tank due to the fact that the microbial strains and organic matter impurities are mixed in the sludge, the aerobic strains can be recycled in the secondary aerobic tank, meanwhile, the organic matters in the sludge can be further decomposed, the sludge generation and discharge amount can be reduced, meanwhile, partial sewage in the secondary aerobic tank and the sedimentation tank can flow back to the primary aerobic tank for continuous recycling, thereby improving the utilization rate of the microbial strains.
Drawings
The following detailed description of embodiments of the invention is provided in conjunction with the appended drawings, in which:
FIG. 1 is a schematic structural diagram of a novel sewage treatment system of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or there can be intervening components, and when a component is referred to as being "disposed in the middle," it is not just disposed in the middle, so long as it is not disposed at both ends, but rather is within the scope of the middle. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items
As shown in figure 1, a novel sewage treatment system comprises a hydrolysis acidification tank 1, a first-level aerobic tank 2, an anaerobic tank 3, a second-level aerobic tank 4, a sedimentation tank 5 and a filtering disinfection tank 6 which are sequentially communicated, wherein microbial fillers 7 are uniformly distributed in the hydrolysis acidification tank 1, the first-level aerobic tank 2, the anaerobic tank 3 and the second-level aerobic tank 4, the microbial fillers 7 adopted in the application are existing materials and are not described in detail, wherein a water supply device 8 for supplying sewage into the tank body is arranged at the bottom of the hydrolysis acidification tank 1, a water outlet pipe 9 is arranged in the filtering disinfection tank 6, so that sewage is supplied from the bottom of the hydrolysis acidification tank 1 and sequentially passes through the hydrolysis acidification tank 1, the first-level aerobic tank 2, the anaerobic tank 3, the second-level aerobic tank 4, the sedimentation tank 5 and the filtering disinfection tank 6 for treatment, and is finally discharged from the water outlet pipe 9, and aeration devices for increasing the oxygen amount in the first-level aerobic tank 2 and the second-level aerobic tank 4 are arranged, thereby do benefit to the growth of the interior aerobic microbial bacterial of cell body and breed, the bottom intercommunication of connecting tube 10 and sedimentation tank 5 is passed through to the bottom of anaerobism pond 3 in the bottom of anaerobism pond 3, so that the silt of sedimentation tank 5 bottom can let in to the bottom of anaerobism pond 3, preferably, in order to make the transport of mud more unblocked, can add on connecting tube 10 and establish the pump body 16, carry the mud of sedimentation tank 5 bottom to the bottom of anaerobism pond 3 through the pump body 16, the top of second grade aerobic tank 4 and sedimentation tank 5 all communicates with one-level aerobic tank 2 through pipeline 11, in order to carry the partial sewage on second grade aerobic tank 4 and sedimentation tank 5 upper portion to one-level aerobic tank 2. When the sewage is treated, anaerobic bacteria are used for consuming organic matters in the sewage to reduce substances such as ammonia nitrogen, COD (chemical oxygen demand), BOD (biochemical oxygen demand) and the like, and both oxygen aeration and oxygen consumption are used for treating the organic matters in the sewage to reduce substances such as ammonia nitrogen, COD, BOD and the like.
Further, adjacent two tank bodies in the hydrolysis acidification tank 1, the first-stage aerobic tank 2, the anaerobic tank 3 and the second-stage aerobic tank 4 can be communicated through a water conveying pipe, the water conveying pipe comprises a first water conveying pipe 12 and a second water conveying pipe 13, the front end of the first water conveying pipe 12 is arranged on the upper part of the last tank body and is provided with a plurality of water inlet holes 14, the rear end of the first water conveying pipe is arranged on the upper part of the next tank body, the upper end of the second water conveying pipe 13 is communicated with the rear end of the first water conveying pipe 12, the lower end of the second water conveying pipe extends to the lower part of the tank body and is provided with a plurality of water outlet holes, the last tank body mentioned herein refers to the tank body which is positioned above in the flowing direction of sewage in two adjacent communicated tank bodies, namely the hydrolysis acidification tank 1, the first-stage aerobic tank 2, the anaerobic tank 3, the second-stage aerobic tank 4, the sedimentation tank 5 and the filtering and disinfection tank 6 are sequentially, therefore, in the process of upward movement of sewage from the bottom of the tank body, the sewage can be in full contact reaction with microbial strains on the microbial filler 7, and the sewage treatment effect is further improved.
Further, the water supply device 8 may include a water supply pipe disposed at the bottom of the conditioning tank in a winding manner, a plurality of water outlets are disposed on the water supply pipe along the length direction thereof, and a one-way check valve is installed on the water outlets. It is specific, the one end of delivery pipe extends outside the equalizing basin and can make sewage flow into to the equalizing basin in through the delivery port on the delivery pipe, flow out through making sewage from a plurality of even orientation hydrolysis acidification tank 1 each direction in of delivery port, thereby make sewage can be more even with the microbial strain contact on the microbial filler 7, and then improved decomposition reaction efficiency, and simultaneously, through adopting the less delivery port of a plurality of bores, and install one-way check valve on the delivery port, can prevent that the delivery pipe mud from causing the condition of jam to the delivery port when stopping supplying water.
Further, the middle part of hydrolysis-acidification tank 1 can be provided with filtration membrane 15, filtration membrane 15 separates first half and latter half with hydrolysis-acidification tank 1, the water-locator is installed in the latter half, so that the sewage of latter half flows to first half after filtration membrane 15's filtration, in this embodiment, filtration membrane 15 adopts the current filtration membrane 15 structure on the market, through being provided with filtration membrane 15, can carry out prefilter to sewage impurity, and then reduce the impurity that flows into next tank body, can be provided with the drain in hydrolysis-acidification tank 1's bottom simultaneously, and then discharge the mud impurity that will deposit.
Further, the pump body 16 can be installed on the conveying pipeline 11, one end of the pump body extends into the middle of the first-stage aerobic tank 2, the other end of the pump body is provided with two conveying branch pipes which extend into the middle of the second-stage aerobic tank 4 and the middle of the sedimentation tank 5 respectively, so that partial sewage in the second-stage aerobic tank 4 and the sedimentation tank 5 is pumped into the first-stage aerobic tank 2, the sewage in the middle of the second-stage aerobic tank 4 and the sedimentation tank 5 is pumped into the first-stage aerobic tank 2, the supernatant on the upper portions of the second-stage aerobic tank 4 and the sedimentation tank 5 cannot be influenced to flow into the next tank body, the pumped sewage is introduced into the middle of the first-stage aerobic tank 2, and microbial strains can stay in the first-stage.
Further, the oxygen exposure device can include gas supply line 17, the one end that supplies the pipeline is connected with air feeder, the other end sets up two branch pipes and communicates respectively to the bottom of one-level good oxygen pond 2 and second grade good oxygen pond 4, and all install the air feed head 18, a plurality of ventholes have been laid on the air feed head 18, air feeder can adopt air-blast air feeder, through inhaling in the gas supply line 17 with the air, and let in to one-level good oxygen pond 2 and second grade good oxygen pond 4 through the air feed head 18 on two branch pipes, thereby make the internal sewage of pond and air contact oxygenate, and stir the internal sewage of pond, oxygen in the acceleration air shifts to in the sewage, prevent the internal suspension body of pond from sinking, strengthen the internal organic matter of pond and the contact of microorganism and dissolved oxygen, thereby realize carrying out oxidative decomposition to the organic matter in the sewage.
Further, the secondary aerobic tank 4 and the sedimentation tank 5 can be communicated through a third water pipe 19, one end of the third water pipe 19 is communicated with the upper part of the secondary aerobic tank 4, the other end of the third water pipe 19 is communicated with the middle part of the sedimentation tank 5, the sedimentation tank 5 is communicated with the filtering and disinfecting tank 6 through a fourth water pipe 20, one end of the fourth water pipe 20 is communicated with the upper part of the sedimentation tank 5, the other end of the fourth water pipe 20 is communicated with the bottom part of the filtering and disinfecting tank 6, the microbial strains attached to the microbial fillers 7 grow to a certain degree and can fall off membrane-shaped bacteria mass, a large amount of membrane-shaped bacteria mass floats in the sedimentation tank 5, the sedimentation tank 5 adopts an open container with an opening at the top and can contact oxygen in the air, so that the supernatant of the secondary aerobic tank 4 is introduced into the middle part of the sedimentation tank 5 by utilizing the reaction and decomposition of the membrane-shaped bacteria mass, and the sewage, decomposing organic matters in the sewage, and then introducing the supernatant into a filtering and disinfecting tank 6 for filtering and disinfecting.
Specifically, multiple filter layers 21 can be distributed in the filtering and disinfecting tank 6 along the height direction of the tank body, each filter membrane 15 comprises stone grains and active carbon grains, the grain diameters of the stone grains and the active carbon grains are gradually reduced from the lower layer to the upper layer, the two adjacent filter layers 21 are separated through the filter membranes 15, and the sewage can be filtered in multiple stages with different stratification degrees through the multiple filter layers 21 and the filter membranes 15, so that the sewage treatment effect is improved.
further, hydrolysis-acidification tank 1, one-level good oxygen pond 2, anaerobism pond 3, second grade good oxygen pond 4, sedimentation tank 5 and filtering and disinfecting pond 6 are the container that stainless steel material made, and the inner wall is provided with anticorrosive film, can install the container at different positions with the container as required and carry out reasonable laying, and it is more convenient to use, can repeatedly carry out dismouting use, can adopt the environmental protection among the prior art simultaneously anticorrosive inner wall to the cell body to protect, thereby improve the life of cell body.
The invention also provides a novel sewage treatment method, which adopts any one of the sewage treatment systems, and when in treatment, sewage is sequentially treated by the hydrolysis acidification tank 1, the primary aerobic tank 2, the anaerobic tank 3, the secondary aerobic tank 4, the sedimentation tank 5 and the filtration disinfection tank 6, wherein a small part of sewage at the upper parts of the secondary aerobic tank 4 and the sedimentation tank 5 is pumped into the primary aerobic tank 2 through the conveying pipeline 11, and the bottom of the sedimentation tank 5 is communicated with the bottom of the anaerobic tank 3 through the connecting pipeline 10, so that sludge in the sedimentation tank 5 can flow into the anaerobic tank 3 through the connecting pipeline 10.
The novel sewage treatment system and the novel sewage treatment method of the invention have the advantages that microbial strains utilized in the sewage treatment process comprise anaerobic strains and aerobic strains, the sedimentation tank 5 is communicated with the bottom of the anaerobic tank 3 through the connecting pipeline 10, the sludge at the bottom of the sedimentation tank 5 can flow back to the anaerobic tank 3, the anaerobic strains in the sludge can be repeatedly recycled in the anaerobic tank 3 due to the fact that the microbial strains and organic matter impurities are mixed in the sludge, the aerobic strains can be recycled in the secondary aerobic tank 4, meanwhile, the organic matter in the sludge can be further decomposed, the sludge is consumed, the sludge generation and discharge amount are reduced, meanwhile, partial sewage in the secondary aerobic tank 4 and the sedimentation tank 5 is conveyed into the primary aerobic tank 2, and partial microbial strains in the sewage can flow back to the primary aerobic tank 2 for continuous recycling, thereby improving the utilization rate of the microbial strains. Meanwhile, the treatment effect on sewage can be greatly improved through the treatment structures of the first-stage aerobic tank 2, the anaerobic tank 3, the second-stage aerobic tank 4 and the sedimentation tank 5.
The above embodiments are only for illustrating the technical solutions of the present invention and are not limited thereto, and any modification or equivalent replacement without departing from the spirit and scope of the present invention should be covered within the technical solutions of the present invention.
Claims (10)
1. A novel sewage treatment system is characterized by comprising a hydrolysis acidification tank (1), a first-level aerobic tank (2), an anaerobic tank (3), a second-level aerobic tank (4), a sedimentation tank (5) and a filtering and disinfecting tank (6) which are sequentially communicated, wherein microbial fillers (7) are uniformly distributed in the hydrolysis acidification tank (1), the first-level aerobic tank (2), the anaerobic tank (3) and the second-level aerobic tank (4), wherein a water supply device (8) for supplying sewage into a tank body is arranged at the bottom of the hydrolysis acidification tank (1), a water outlet pipe (9) is arranged in the filtering and disinfecting tank (6), oxygen aeration devices for increasing the oxygen amount in the tanks are respectively arranged in the first-level aerobic tank (2) and the second-level aerobic tank (4), the bottom of the anaerobic tank (3) is communicated with the bottom of the sedimentation tank (5) through a connecting pipeline (10), so that sludge at the bottom of the sedimentation tank (5) can be introduced to the bottom of the anaerobic tank (3), the tops of the secondary aerobic tank (4) and the sedimentation tank (5) are communicated with the primary aerobic tank (2) through a conveying pipeline (11) so as to convey part of sewage at the upper parts of the secondary aerobic tank (4) and the sedimentation tank (5) into the primary aerobic tank (2).
2. The novel sewage treatment system according to claim 1, wherein adjacent two of the hydrolytic acidification tank (1), the primary aerobic tank (2), the anaerobic tank (3) and the secondary aerobic tank (4) are communicated with each other through water pipes, each water pipe comprises a first water pipe (12) and a second water pipe (13), the front end of the first water pipe (12) is arranged on the upper portion of the last tank and provided with a plurality of water inlet holes (14), the rear end of the first water pipe is arranged on the upper portion of the next tank, the upper end of the second water pipe (13) is communicated with the rear end of the first water pipe (12), and the lower end of the second water pipe extends to the lower portion of the tank and is provided with a plurality of water outlet holes.
3. The sewage treatment system according to claim 1, wherein said water supply device (8) comprises a water supply pipe which is arranged at the bottom of the regulating tank in a winding manner, a plurality of water outlets are arranged on the water supply pipe along the length direction of the water supply pipe, and one-way check valves are arranged on the water outlets.
4. The novel sewage treatment system according to claim 1, wherein the hydrolysis acidification tank (1) is provided with a filtering membrane (15) in the middle, the filtering membrane (15) separates the hydrolysis acidification tank (1) into an upper half and a lower half, and a water distributor is installed in the lower half, so that sewage in the lower half flows to the upper half after being filtered by the filtering membrane (15).
5. A novel sewage treatment system according to claim 1, wherein the transfer pipe (11) is provided with a pump body (16), one end of which extends into the middle of the primary aerobic tank (2), and the other end of which is provided with two transfer branches which extend into the middle of the secondary aerobic tank (4) and the sedimentation tank (5), respectively.
6. The novel sewage treatment system according to claim 5, wherein the oxygen aeration device comprises a gas supply pipeline (17), one end of the gas supply pipeline is connected with a gas supply device, the other end of the gas supply pipeline is provided with two branch pipes which are respectively communicated with the bottoms of the primary aerobic tank (2) and the secondary aerobic tank (4), and are provided with gas supply heads (18), and a plurality of gas outlet holes are distributed on the gas supply heads (18).
7. The novel sewage treatment system according to claim 5, wherein the secondary aerobic tank (4) is communicated with the sedimentation tank (5) through a third water pipe (19), one end of the third water pipe (19) is communicated with the upper part of the secondary aerobic tank (4), the other end is communicated to the middle part of the sedimentation tank (5), the sedimentation tank (5) is communicated with the filtering and disinfecting tank (6) through a fourth water pipe (20), one end of the fourth water pipe (20) is communicated with the upper part of the sedimentation tank (5), and the other end is communicated to the bottom of the filtering and disinfecting tank (6).
8. The novel sewage treatment system according to claim 7, wherein a plurality of filter layers (21) are arranged in the filtering and disinfecting tank (6) along the height direction of the tank body, each filter membrane (15) comprises stone grains and activated carbon grains, the grain sizes of the stone grains and the activated carbon grains are gradually reduced from the lower layer to the upper layer, and two adjacent filter layers (21) are separated by the filter membranes (15).
9. The novel sewage treatment system according to claim 1, wherein the hydrolysis acidification tank (1), the primary aerobic tank (2), the anaerobic tank (3), the secondary aerobic tank (4), the sedimentation tank (5) and the filtering and disinfecting tank (6) are all containers made of stainless steel materials, and the inner wall of the containers is provided with an anticorrosive film.
10. A novel sewage treatment method, characterized in that, the sewage is treated by the sewage treatment system according to any one of claims 1 to 9 through a hydrolysis acidification tank (1), a primary aerobic tank (2), an anaerobic tank (3), a secondary aerobic tank (4), a sedimentation tank (5) and a filtration disinfection tank (6) in sequence, wherein, a small part of the sewage at the upper parts of the secondary aerobic tank (4) and the sedimentation tank (5) is pumped into the primary aerobic tank (2) through a conveying pipeline (11), and the bottom of the sedimentation tank (5) is communicated with the bottom of the anaerobic tank (3) through a connecting pipeline (10), so that the sludge in the sedimentation tank (5) can flow into the anaerobic tank (3) through the connecting pipeline (10).
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