CN112592001A - Treatment facility suitable for rural domestic sewage - Google Patents
Treatment facility suitable for rural domestic sewage Download PDFInfo
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- CN112592001A CN112592001A CN202011575292.3A CN202011575292A CN112592001A CN 112592001 A CN112592001 A CN 112592001A CN 202011575292 A CN202011575292 A CN 202011575292A CN 112592001 A CN112592001 A CN 112592001A
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- domestic sewage
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- 239000010865 sewage Substances 0.000 title claims abstract description 132
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 43
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 14
- 239000011574 phosphorus Substances 0.000 claims abstract description 14
- 241000894006 Bacteria Species 0.000 claims abstract description 6
- 238000010521 absorption reaction Methods 0.000 claims abstract description 4
- 241001148470 aerobic bacillus Species 0.000 claims abstract description 4
- 238000006243 chemical reaction Methods 0.000 claims abstract description 4
- 241001148471 unidentified anaerobic bacterium Species 0.000 claims abstract description 4
- 239000012528 membrane Substances 0.000 claims description 98
- 238000004062 sedimentation Methods 0.000 claims description 61
- 238000005273 aeration Methods 0.000 claims description 46
- 239000007788 liquid Substances 0.000 claims description 38
- 238000005352 clarification Methods 0.000 claims description 21
- 239000008394 flocculating agent Substances 0.000 claims description 8
- 238000011001 backwashing Methods 0.000 claims description 7
- 238000011010 flushing procedure Methods 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 5
- 239000000701 coagulant Substances 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 239000000645 desinfectant Substances 0.000 claims description 3
- 238000005406 washing Methods 0.000 claims description 3
- 230000003311 flocculating effect Effects 0.000 claims 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 17
- 238000010992 reflux Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 12
- 230000008569 process Effects 0.000 description 12
- 238000003756 stirring Methods 0.000 description 11
- 238000004659 sterilization and disinfection Methods 0.000 description 10
- 238000005507 spraying Methods 0.000 description 8
- 239000010802 sludge Substances 0.000 description 7
- 230000001954 sterilising effect Effects 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910019142 PO4 Inorganic materials 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 4
- 239000010452 phosphate Substances 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 206010021143 Hypoxia Diseases 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 244000005700 microbiome Species 0.000 description 3
- 230000001546 nitrifying effect Effects 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- 239000013049 sediment Substances 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 206010002660 Anoxia Diseases 0.000 description 1
- 241000976983 Anoxia Species 0.000 description 1
- 241000588724 Escherichia coli Species 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 238000005276 aerator Methods 0.000 description 1
- 230000007953 anoxia Effects 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 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
- 238000007599 discharging Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000007726 management method Methods 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Images
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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- 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
- 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
-
- 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
- C02F3/302—Nitrification and denitrification treatment
Landscapes
- 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)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The application discloses treatment facility suitable for rural domestic sewage includes: the anoxic reactor is used for providing an anoxic state for the sewage so as to enable denitrifying bacteria in the sewage to perform denitrification reaction so as to perform denitrification treatment on the sewage; the anaerobic reactor is used for providing an anaerobic state for the sewage so as to enable anaerobic bacteria in the sewage to react so as to release phosphorus and perform ammoniation treatment on the sewage; the aerobic reactor provides an aerobic environment for the sewage to enable aerobic bacteria in the sewage to react so as to carry out nitrification phosphorus absorption and BOD removal treatment on the sewage; wherein the anoxic reactor, the anaerobic reactor and the aerobic reactor are communicated in turn so that the sewage flows through the anoxic reactor, the anaerobic reactor and the aerobic reactor in turn. The application has the beneficial effects that the treatment equipment which has higher nitrogen and phosphorus removal efficiency and overcomes the problem of larger change of rural water quality and water quantity and is suitable for rural domestic sewage is provided.
Description
Technical Field
The application relates to water treatment equipment, in particular to treatment equipment suitable for rural domestic sewage.
Background
In 2019, in 4 months, the department of ecological environment issued work guidelines (trial) for establishment of water pollution emission control regulations of rural domestic sewage treatment facilities, and pointed out that the emission standard of tail water is appropriately relaxed according to local conditions; encourages the preferential selection of nitrogen and phosphorus resource and tail water utilization technology.
In the same month, the technical standard of rural domestic sewage treatment engineering published by the ministry of civil engineering will be formally implemented in 12 months in 2019, and the standard sets the design water quantity and quality, sewage collection system, sewage treatment, supporting facilities, construction and acceptance, operation and maintenance and the like comprehensively and systematically.
The existing sewage treatment equipment is difficult to be suitable for rural domestic sewage treatment.
Disclosure of Invention
In order to solve the defects of the prior art, the application provides a treatment device suitable for rural domestic sewage, which comprises: the system comprises a water inlet device, an anoxic reactor, an anaerobic reactor, an aerobic reactor, a return flow sedimentation tank, a membrane bioreactor, a return flow sedimentation tank, a back flush clarification tank, a first return flow device, a second return flow device, a first aeration fan, a second aeration fan and a water outlet device.
The anoxic reactor provides an anoxic state for the sewage so as to enable denitrifying bacteria in the sewage to perform denitrification reaction, thereby performing denitrification treatment on the sewage. The anaerobic reactor provides anaerobic state for the sewage to enable anaerobic bacteria in the sewage to react so as to release phosphorus and perform ammoniation treatment on the sewage. The aerobic reactor provides an aerobic environment for the sewage so that aerobic bacteria in the sewage react to carry out nitrification phosphorus absorption and BOD removal treatment on the sewage. Wherein the anoxic reactor, the anaerobic reactor and the aerobic reactor are communicated in turn so that the sewage flows through the anoxic reactor, the anaerobic reactor and the aerobic reactor in turn.
Wherein, the return flow sedimentation tank is used for settling the fixed objects in the sewage; the return flow sedimentation tank is communicated with the aerobic reactor so that sewage discharged by the aerobic reactor enters the return flow sedimentation tank; the return flow sedimentation tank is communicated with the anoxic reactor so as to lead the bottom layer liquid of the return flow sedimentation tank to flow back to the anoxic reactor.
Wherein, the membrane bioreactor is used for carrying out solid-liquid separation on the sewage through the built-in membrane filaments; the membrane bioreactor is communicated with the return flow sedimentation tank so that the upper layer of the return flow sedimentation tank flows to the membrane bioreactor. The membrane bioreactor simultaneously carries out liquid flow reflux to the aerobic reactor.
Wherein, the return flow sedimentation tank carries out flocculation treatment on the sewage by adding a flocculating agent or a coagulant aid. Specifically, an inclined tube device is arranged in the return flow sedimentation tank to precipitate fixed objects in the sewage through the inclined tube device; an ultraviolet light tube is arranged in the return sedimentation tank so that the ultraviolet light can disinfect the sewage.
Wherein, the back flushing clarification tank is used for sewage clarification and provides a clarification liquid flow required by back flushing; the backflushing clarification tank is communicated with the membrane bioreactor so that the backflushing clarification tank clarifies the liquid flow filtered by the membrane bioreactor, and meanwhile, the backflushing clarification tank provides the backflushing liquid flow for the membrane bioreactor.
Wherein, the first return flow equipment is used for conveying the lower layer sewage in the aerobic reactor back to the anoxic reactor. The second backflow equipment is used for conveying the lower layer sewage of the backflow sedimentation tank back to the anoxic reactor.
The first aeration fan is used for carrying out aeration treatment on the aerobic reactor; the first aeration fan is connected to the anoxic reactor so that the first aeration fan generates airflow to be conveyed to the aerobic reactor.
The second aeration fan is used for carrying out aeration treatment on the membrane bioreactor; the second aeration fan is connected to the membrane bioreactor so that the second aeration fan generates airflow to be conveyed to the membrane bioreactor.
The membrane pool self-priming pump is used for pumping the treated sewage in the membrane bioreactor when the liquid level in the membrane bioreactor exceeds a preset water level; the backwashing water pump is used for flushing membrane filaments of the membrane bioreactor in the membrane bioreactor; the membrane pool dosing device is used for adding disinfectant into the membrane bioreactor; the air washing device is used for disturbing and vibrating membrane filaments in the membrane bioreactor to strip attached solid dirt.
The application has the advantages that: provides a treatment device which has higher nitrogen and phosphorus removal efficiency and overcomes the problem of larger change of rural water quality and water quantity and is suitable for rural domestic sewage.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:
FIG. 1 is a schematic structural diagram of a treatment facility suitable for rural domestic sewage according to an embodiment of the present application;
FIG. 2 is a schematic perspective view of a rural domestic sewage treatment facility according to another embodiment of the present application;
FIG. 3 is a schematic view showing the overall structure of the treatment equipment for rural domestic sewage shown in FIG. 2;
FIG. 4 is a schematic structural view of a first mounting box of the treatment equipment suitable for rural domestic sewage shown in FIG. 2;
FIG. 5 is a schematic structural view of a sedimentation tank of the treatment equipment suitable for rural domestic sewage shown in FIG. 2;
FIG. 6 is a schematic side view of the slide rail of the rural domestic sewage treatment facility shown in FIG. 2;
FIG. 7 is a schematic view of the structure of an aerator pipe of the treatment facility suitable for rural domestic sewage shown in FIG. 2;
FIG. 8 is a schematic structural view of a stirring blade of the treatment equipment suitable for rural domestic sewage shown in FIG. 2;
fig. 9 is a partial enlarged structural view of a part A of fig. 3 of the treatment equipment for rural domestic sewage shown in fig. 2.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all 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 application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.
Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "disposed," "provided," "connected," and "sleeved" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1, the treatment equipment suitable for rural domestic sewage of the present application comprises: the system comprises a water inlet device, an anoxic reactor, an anaerobic reactor, an aerobic reactor, a return flow sedimentation tank, a membrane bioreactor, a return flow sedimentation tank, a back flush clarification tank, a first return flow device, a second return flow device, a first aeration fan, a second aeration fan and a water outlet device.
The anoxic reactor provides an anoxic state for the sewage so as to enable denitrifying bacteria in the sewage to perform denitrification reaction, thereby performing denitrification treatment on the sewage. The anaerobic reactor provides anaerobic state for the sewage to enable anaerobic bacteria in the sewage to react so as to release phosphorus and perform ammoniation treatment on the sewage. The aerobic reactor provides an aerobic environment for the sewage so that aerobic bacteria in the sewage react to carry out nitrification phosphorus absorption and BOD removal treatment on the sewage. Wherein the anoxic reactor, the anaerobic reactor and the aerobic reactor are communicated in turn so that the sewage flows through the anoxic reactor, the anaerobic reactor and the aerobic reactor in turn.
Wherein, the return flow sedimentation tank is used for settling the fixed objects in the sewage; the return flow sedimentation tank is communicated with the aerobic reactor so that sewage discharged by the aerobic reactor enters the return flow sedimentation tank; the return flow sedimentation tank is communicated with the anoxic reactor so as to lead the bottom layer liquid of the return flow sedimentation tank to flow back to the anoxic reactor.
Wherein, the membrane bioreactor is used for carrying out solid-liquid separation on the sewage through the built-in membrane filaments; the membrane bioreactor is communicated with the return flow sedimentation tank so that the upper layer of the return flow sedimentation tank flows to the membrane bioreactor. The membrane bioreactor simultaneously carries out liquid flow reflux to the aerobic reactor.
Wherein, the return flow sedimentation tank carries out flocculation treatment on the sewage by adding a flocculating agent or a coagulant aid. Specifically, an inclined tube device is arranged in the return flow sedimentation tank to precipitate fixed objects in the sewage through the inclined tube device; an ultraviolet light tube is arranged in the return sedimentation tank so that the ultraviolet light can disinfect the sewage.
Wherein, the back flushing clarification tank is used for sewage clarification and provides a clarification liquid flow required by back flushing; the backflushing clarification tank is communicated with the membrane bioreactor so that the backflushing clarification tank clarifies the liquid flow filtered by the membrane bioreactor, and meanwhile, the backflushing clarification tank provides the backflushing liquid flow for the membrane bioreactor.
Wherein, the first return flow equipment is used for conveying the lower layer sewage in the aerobic reactor back to the anoxic reactor. The second backflow equipment is used for conveying the lower layer sewage of the backflow sedimentation tank back to the anoxic reactor.
The first aeration fan is used for carrying out aeration treatment on the aerobic reactor; the first aeration fan is connected to the anoxic reactor so that the first aeration fan generates airflow to be conveyed to the aerobic reactor.
The second aeration fan is used for carrying out aeration treatment on the membrane bioreactor; the second aeration fan is connected to the membrane bioreactor so that the second aeration fan generates airflow to be conveyed to the membrane bioreactor.
The membrane pool self-priming pump is used for pumping the treated sewage in the membrane bioreactor when the liquid level in the membrane bioreactor exceeds a preset water level; the backwashing water pump is used for flushing membrane filaments of the membrane bioreactor in the membrane bioreactor; the membrane pool dosing device is used for adding disinfectant into the membrane bioreactor; the air washing device is used for disturbing and vibrating membrane filaments in the membrane bioreactor to strip attached solid dirt.
More specifically, the present application will be described in detail below.
Introduction of AAO Process:
the method has the advantages that the relation of traditional anaerobism (A), anoxia (A) and aerobism (O) in the preposed anoxic tank is improved by improving the preposed anoxic tank through experiments, and the method mainly has the function of removing nitrate contained in return sludge of a secondary sedimentation tank so as to ensure that phosphorus is more fully released in an anaerobic section; in the anaerobic section, the phosphorus accumulating bacteria are anoxic to release phosphate and organic matter is removed to some extent. Although oxygen is not supplied in the anoxic section, the mixed liquid in the aerobic tank flows back to supply NO3-N as an electron acceptor so as to denitrify and denitrify. In the aerobic tank, aerobic microorganisms carry out nitrification and remove a large amount of organic matters, and also absorb a large amount of soluble phosphate, and the soluble phosphate is stored in the body, so that the phosphorus removal effect is achieved by discharging excess sludge. The aerobic tank is stirred by aeration without additionally arranging an underwater propulsion device, and the aeration stirring power can reach that the activated sludge is in a suspension state. The mixed liquid returned from the anoxic pond needs to be conveyed by an underwater propulsion device, and the return ratio is 300 percent
Compared with the traditional AAO, the method has the following advantages:
1) the effluent quality is higher than that of the AAO process, the denitrification and dephosphorization effect is good, and the use of chemical agents is saved.
2) The total hydraulic retention time is less than that of other similar processes.
3) Anaerobic and aerobic alternate operation can effectively inhibit sludge expansion.
4) The sludge settling property is good, the sludge bulking problem is avoided, the effluent quality is good, certain impact load resistance is realized, the operation is stable, and the management is simple and convenient.
5) Adopts blast aeration, has high oxygen utilization rate and lower power consumption.
6) The designed water depth is larger, and the occupied area of the aeration tank can be reduced.
The AAO + precipitation + MBR membrane module process is an improved integrated water treatment device, and the practical field application shows that the effluent quality can stably reach the first-grade A standard of the relevant discharge standard.
The following is a description of the process:
1. and (3) water inflow explanation:
the integration equipment front end is equipped with the equalizing basin, has the elevator pump in the equalizing basin, carries out relevant control to the elevator pump through liquid level control switch, and the elevator pump is opened and is intake integration equipment during high liquid level, and low liquid level stops.
Get into oxygen deficiency section bottom of pool (A) through the pipeline, wait to the full back in oxygen deficiency pond, through flowing into anaerobism pond (A) bottom of pool certainly, wait to get into good oxygen pond bottom of pool (O) through flowing automatically after anaerobism pond water is full, get into two heavy ponds of pond draft tubes entering through flowing automatically after good oxygen pond water is full, carry out the solid-liquid separation of first degree, get rid of the great suspended solid of most proportion, wait to two heavy pond water full backs, water flows automatically through the overflow weir plate that two heavy pond tops gets into the membrane cisterna. When the liquid level is high, the self-priming pump is automatically started, solid-liquid separation of a second degree is further carried out in the membrane pool, and smaller suspended matters and microorganisms with large related volumes are further removed. The membrane effluent is discharged to a clarification tank (a backwashing water tank) and discharged by self-flowing after the water is full.
2. Description of actions of related equipment in water inlet process
A liquid level meter is arranged in the regulating tank, a high liquid level lift pump is started, the water feeding work is started integrally, microbial fillers are fully distributed in the anoxic section tank, the anaerobic section tank and the aerobic section tank, and the internal pollutants are adsorbed and treated by further metabolism of the organisms through the Newcastle of the organisms in the places where the organisms with related attributes are parasitized and propagated. During the working period, the external aeration fan device provides aeration for the aerobic tank section, so as to provide a better aerobic environment for microorganisms.
And secondly, a reflux pump is arranged in the aerobic tank, the nitrifying liquid in the aerobic tank is refluxed to the nitrifying liquid in the anoxic tank, and related pollutants are further removed in a reverse circulation mode through an anaerobic and anoxic environment.
And then just the good oxygen pond water gets into two heavy ponds through flowing automatically, is equipped with the draft tube device in two heavy ponds, and what flow automatically came over can be cut through the draft tube, and splash is gone into with external supplementary sediment medicament that adds and is fully fused, further improves inside mud and the biomembrane that drops and deposits efficiency. Still be equipped with the pipe chute device in the sedimentation tank, the pipe chute device plays a relevant dwell effect to the rivers, has increased the settling time greatly, and the effect of deposiing for this also can further improve.
Therefore, the water in the supernatant of the sedimentation tank flowing into the membrane tank is relatively clean, and SS and partial pollutants in the effluent of the sedimentation tank are further reduced by pumping through the membrane, so that the first-class A effluent standard is achieved. The membrane pool auxiliary equipment is provided with a self-priming pump, a back flush water pump and a disinfection and dosing system, and the service life of the membrane filaments is further prolonged. Moreover, SS intercepted by the membrane can also flow back to the anoxic tank section through a sludge reflux pump in the membrane tank to further remove related substances in cycles, so that stable running of effluent is ensured.
3. Description of the Process linkage
The trunk line includes: lift pump, aeration fan, suction pump, two dosing pumps and related liquid level meter.
The front end of the equipment can be provided with a regulating tank which can be of a concrete structure, when the liquid level in the regulating tank reaches a high level, the lifting pump works, the corresponding aeration fan works, the precipitation dosing equipment works, the flocculating agent or the coagulant aid is added into the reciprocating sedimentation tank, and when the liquid level in the membrane tank reaches the high level, the suction pump works. The corresponding device stops working when the liquid level is low.
Moreover, when the inflow is greater than the suction volume of the membrane self-priming pump, namely when the membrane tank reaches an ultrahigh liquid level, the membrane tank self-priming pump works, and the front-end equipment (a lifting pump, an aeration fan and dosing equipment) synchronously works and only works. Thus, the linkage work is repeated.
The water after the membrane tank comes out passes through the clarification tank, and the pathogenic bacteria of related escherichia coli are killed by the agent of the disinfection equipment, so that the water is further discharged after reaching the standard.
Description of the auxiliary trunk: the auxiliary trunk line includes: nitrifying liquid reflux pump, mud reflux pump, backwash fan, backwash water pump.
After the four devices are operated in the early stage to obtain relevant data, a time relay and a pressure difference transmitter in the PLC are used for determining the backflow period through time, and the backflow period and the membrane backwashing period are determined through inlet and outlet pressure differences.
The water outlet is better ensured through the process linkage of the two processes, and the service life of the MBR membrane module is furthest ensured on the other hand, so that the later-stage operation cost is reduced.
As another aspect of the present application, the treatment equipment for rural domestic sewage of the present application has a remote communication module, which can form data interaction with a smart phone or a PC terminal, so that a user can control the treatment equipment for rural domestic sewage of the present application through the smart phone or the PC terminal, and obtain corresponding data conditions of the treatment equipment for rural domestic sewage.
As a further preferred scheme, the treatment equipment suitable for rural domestic sewage is further provided with an image acquisition device, and images can be acquired and transmitted to a smart phone or a PC terminal of a user.
As an extension scheme of the application, referring to FIGS. 2 to 9, the new rural construction sewage treatment equipment comprises an anaerobic tank 2, an anoxic tank 29, a sedimentation tank 28, a membrane tank 15, a disinfection tank 19 and a second mounting box 11, wherein the tops of the anaerobic tank 2 and a first motor 3 are fixedly connected with a first driving box 4, one side of the first driving box 4 is provided with the first motor 3, the output end of the first motor 3 is fixedly connected with a driving bevel gear 45, one side of the driving bevel gear 45 is provided with a driven bevel gear 43 which is engaged with the driving bevel gear, the tops of the inner cavities of the anaerobic tank 2 and the anoxic tank 29 are respectively provided with a sliding rail 38 through a bracket, the surface of the sliding rail 38 is slidably connected with a sliding block 39, the inner cavities of the anaerobic tank 2 and the anoxic tank 29 are respectively provided with a cleaning pipe 44, the top of the cleaning pipe 44 is fixedly connected with a rotating rod 47, the bottom surface of the rotating rod 47 is fixedly connected with the sliding block, the water pipe 46 is connected with the rotating rod 47 through a rotary seal;
the top of a sedimentation tank 28 is fixedly connected with a second mounting box 11, the top of the inner cavity of the second mounting box 11 is fixedly connected with a second motor 10, one side of the second motor 10 is fixedly connected with a rotary table 9, the surface of the rotary table 9 is rotatably connected with a reciprocating rod 8, the bottom end of the reciprocating rod 8 is rotatably connected with a push rod 14, the top and the top of the inner cavity of the sedimentation tank 28 are respectively provided with a limit groove 12, the push rod 14 passes through the limit groove 12 and extends to the inner cavity of the sedimentation tank 28 to be fixedly connected with a movable plate 6, two sides of the movable plate 6 are respectively fixedly connected with scrapers 5, the inner cavity of the second mounting box 11 is respectively provided with a first mounting box 7, the top of the inner cavity of the first mounting box 7 is provided with a slide rail 34, the surface of the slide rail 34 is slidably connected with a movable plate 36, two sides of the bottom end of the movable plate 36 are respectively fixedly connected with a movable rod 33 and a first electric push;
the center of the bottom of the inner cavity of the anoxic tank 29 is provided with a waterproof shell 24, the inner cavity of the waterproof shell 24 is provided with a third motor 25, the output end of the top of the third motor 25 penetrates and is fixedly connected with a stirring rod 23, the surface of the stirring rod 23 is fixedly connected with a plurality of stirring blades 40, the surface of each stirring blade 40 is provided with a plurality of crushing holes, two sides of the bottom of the inner cavity of the sedimentation tank 28 are respectively provided with an aeration pipe 26, the aeration pipe 26 is provided with a plurality of air outlet pipes 42;
the bottom of the inner cavity of the membrane pool 15 is provided with a biological membrane component 16, one side of the bottom of the inner cavity of the membrane pool 15 is provided with a reflux pump 22, the top end of the reflux pump 22 is connected with the biological membrane component 16 through a reflux pipe 30, the bottom end of the reflux pump 22 is connected with the anaerobic pool 2 through the reflux pipe 30, one side of the inner cavity of the membrane pool 15 is provided with a delivery pump 20, one end of the delivery pump 20 is connected with the biological membrane component 16 through a delivery pipe 21, the other end of the delivery pump 20 is connected with a disinfection pool 19 through.
One side of the anaerobic tank 2 is fixedly connected with an anoxic tank 29, one side of the anoxic tank 29 is fixedly connected with a sedimentation tank 28, two sides of the anoxic tank 29 are respectively connected with the anaerobic tank 2 and the sedimentation tank 28 through one-way valves 1, and a water inlet is arranged at the bottom of one side of the anaerobic tank 2.
Both ends of the air outlet pipe 42 are connected with the inner wall of the aeration pipe 26 through threads, and the top end of the air outlet pipe 42 is provided with a mounting groove for mounting the porous membrane 41; the width of the section of one end of the movable rod 33 is larger than the width of the notch on one side of the sleeve 32, and two ends of the slide rail 34 are provided with lugs; the inner cavity of the anoxic pond 29 is provided with a spraying plate 13, the bottom of the spraying plate 13 is provided with a nozzle, and the bottom and two sides of the cleaning pipe 44 are provided with nozzles; the slide rail 38 is of an annular structure, the slide rail 38 is arranged in a groove in the bracket, and the top of the bracket is fixedly connected with the top of the inner cavity of the anaerobic tank 2; one side of the sedimentation tank 28 is fixedly connected with the membrane tank 15, and the top of the sedimentation tank 28 is connected with the membrane tank 15 through a one-way valve 1; two sewage pumps 27 are symmetrically arranged at the bottom of the sedimentation tank 28, and the sewage pumps 27 are externally connected with sewage pipes; a disinfection water box 17 is arranged in the center of the top of the disinfection tank 19, and two ultraviolet sterilization lamps are symmetrically arranged at the top end of the inner cavity of the disinfection tank 19; the bottom of the flocculating agent box 37 is connected with the top of the spraying plate 13, and one side of the scraper 5 is attached to the inner wall of the sedimentation tank 28.
When the device is used, electric elements appearing in the device are externally connected with a power supply and a control switch when in use, sewage is conveyed to an inner cavity of an anaerobic tank 2 through a water inlet at one side of the anaerobic tank 2, phosphorus-accumulating bacteria can be anoxic through the anaerobic tank 2 to release phosphate, meanwhile, organic matters are removed to a certain extent, the sewage can flow into an anoxic tank 29 through a one-way valve 1, denitrification is carried out in the anoxic tank 29, the sewage can flow into a sedimentation tank 28 through the one-way valve 1, aeration can be conveniently carried out through an aeration pipe 26, and during aeration, the aeration effect can be improved through a porous membrane 41 and an air outlet pipe 42, large bubbles are avoided, a stirring rod 23 can be driven to rotate through a third motor 25, a flocculating agent is sprayed through a flocculating agent box 37 and a spraying plate 13, and the first electric push rod 35 can move through a pushing moving plate 36, the top end of the movable plate 36 moves on the surface of the slide rail 34, and the bottom end drives the sewage pump 27 to move, when the first electric push rod 35 stretches back and forth, the spraying plate 13 can spray more uniformly, when the movable plate 36 moves, the reciprocating motion can be facilitated through the spring 31, the sleeve 32 and the movable rod 33, the sedimentation effect can be improved by the stirring of the stirring rod 23 and the stirring blade 40, the timely sewage discharge can be facilitated by the cooperation of the sewage pump 27, the second motor 10 can drive the rotary table 9 to rotate, the rotary table 9 can drive the second motor 10 to push the push rod 14 to reciprocate up and down, the push rod 14 can push the movable plate 6 and the scraper 5 to move up and down, the inner wall of the sedimentation tank 28 can be cleaned, sediment adhesion on the inner wall of the sedimentation tank 28 can be avoided, then the sediment can enter the inside of the membrane tank 15, the sewage can be filtered again through the biological membrane module 16, and can be conveyed, and the sterilizing water box 17 and the spraying plate 18 can spray sterilizing water for sterilization, the ultraviolet sterilizing lamp at the top of the sterilizing tank 19 can improve the sterilizing effect, and the sewage screened by the biological membrane component 16 can improve the effect that the return pump 22 and the return pipe 30 are conveyed to the anaerobic tank 2 for secondary treatment.
According to the scheme of the embodiment, the interior of the anaerobic tank and the interior of the anoxic tank can be conveniently cleaned through the first motor, the first driving box, the sliding block, the sliding rail, the driven bevel gear, the cleaning pipe, the driving bevel gear, the water pipe and the rotating rod, the inner wall of the sedimentation tank can be conveniently cleaned through the rotary disc, the second motor, the reciprocating rod, the limiting groove, the push rod, the movable plate and the scraper plate, and sewage can be conveniently discharged through the cooperation of the sewage discharge pump; moreover, the spraying plate can be controlled to spray the flocculating agent conveniently through the first mounting box, the spring, the sleeve, the movable rod, the slide rail, the first electric push rod, the movable plate and the slide rail, the sedimentation effect can be improved when the spraying plate is shaken to spray, and the aeration effect can be improved through the stirring rod, the aeration pipe, the third motor, the air outlet pipe and the porous membrane, so that the sedimentation effect can be improved conveniently; in addition, sewage can be subjected to multiple treatment through the anaerobic tank, the anoxic tank, the membrane tank, the biological membrane component and the disinfection tank, the treatment effect can be improved, and the sewage can be subjected to secondary treatment through the reflux pump and the reflux pipe, so that the treatment effect is convenient to improve.
The first motor 3 and the second motor 1 are manufactured by Lanbo motors of Taizhou, model y2-225M and relevant power supplies and circuits.
It is well within the skill of those in the art to implement, without undue experimentation, the present application is not directed to software and process improvements, as they relate to circuits and electronic components and modules.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims (11)
1. The utility model provides a treatment facility suitable for rural domestic sewage which characterized in that:
the treatment facility suitable for rural domestic sewage includes:
the anoxic reactor is used for providing an anoxic state for the sewage so as to enable denitrifying bacteria in the sewage to perform denitrification reaction so as to perform denitrification treatment on the sewage;
the anaerobic reactor is used for providing an anaerobic state for the sewage so as to enable anaerobic bacteria in the sewage to react so as to release phosphorus and perform ammoniation treatment on the sewage;
the aerobic reactor provides an aerobic environment for the sewage to enable aerobic bacteria in the sewage to react so as to carry out nitrification phosphorus absorption and BOD removal treatment on the sewage;
wherein the anoxic reactor, the anaerobic reactor and the aerobic reactor are communicated in sequence so that the sewage flows through the anoxic reactor, the anaerobic reactor and the aerobic reactor in sequence.
2. The treatment equipment suitable for rural domestic sewage according to claim 1, characterized in that:
the treatment facility suitable for rural domestic sewage still includes:
the return flow sedimentation tank is used for settling the fixed objects in the sewage;
the return flow sedimentation tank is communicated with the aerobic reactor so that sewage discharged by the aerobic reactor enters the return flow sedimentation tank; the return flow sedimentation tank is communicated with the anoxic reactor so as to enable the bottom layer liquid of the return flow sedimentation tank to flow back to the anoxic reactor.
3. The treatment equipment suitable for rural domestic sewage according to claim 2, characterized in that:
the treatment facility suitable for rural domestic sewage still includes:
the membrane bioreactor is used for carrying out solid-liquid separation on the sewage through the built-in membrane filaments;
the membrane bioreactor is communicated with the return flow sedimentation tank so that the upper layer of the return flow sedimentation tank flows to the membrane bioreactor.
4. The treatment equipment suitable for rural domestic sewage according to claim 3, characterized in that:
the return flow sedimentation tank is used for flocculating sewage by adding a flocculating agent or a coagulant aid.
5. The treatment equipment suitable for rural domestic sewage according to claim 6, characterized in that:
an inclined tube device is arranged in the return flow sedimentation tank to enable fixed objects in the sewage to be precipitated through the inclined tube device;
an ultraviolet light tube is arranged in the return flow sedimentation tank so that the ultraviolet light can disinfect the sewage.
6. The treatment equipment suitable for rural domestic sewage according to claim 5, characterized in that:
the treatment facility suitable for rural domestic sewage still includes:
the backwashing clarification tank is used for clarifying sewage and providing a clarification liquid flow required by backwashing;
the backflushing clarification tank is communicated with the membrane bioreactor so that the backflushing clarification tank clarifies the liquid flow filtered by the membrane bioreactor, and meanwhile, the backflushing clarification tank provides the backflushing liquid flow for the membrane bioreactor.
7. The treatment equipment suitable for rural domestic sewage according to claim 6, characterized in that:
the treatment facility suitable for rural domestic sewage still includes:
the first return flow equipment is used for conveying the lower layer sewage in the aerobic reactor back to the anoxic reactor.
8. The treatment equipment suitable for rural domestic sewage according to claim 1, characterized in that:
the treatment facility suitable for rural domestic sewage still includes:
and the second backflow equipment is used for conveying the lower-layer sewage of the backflow sedimentation tank back to the anoxic reactor.
9. The treatment equipment suitable for rural domestic sewage according to claim 1, characterized in that:
the treatment facility suitable for rural domestic sewage still includes:
the first aeration fan is used for carrying out aeration treatment on the aerobic reactor;
the first aeration fan is connected to the anoxic reactor so that the first aeration fan generates airflow to be conveyed to the aerobic reactor.
10. The treatment equipment suitable for rural domestic sewage according to claim 1, characterized in that:
the treatment facility suitable for rural domestic sewage still includes:
the second aeration fan is used for carrying out aeration treatment on the inside of the membrane bioreactor;
the second aeration fan is connected to the membrane bioreactor so that the second aeration fan generates airflow to be conveyed to the membrane bioreactor.
11. The treatment facility suitable for rural domestic sewage still includes:
the membrane pool self-priming pump is used for pumping the treated sewage in the membrane bioreactor when the liquid level in the membrane bioreactor exceeds a preset water level;
the backwashing water pump is used for flushing membrane filaments of the membrane bioreactor in the membrane bioreactor;
the membrane pool dosing device is used for adding a disinfectant into the membrane bioreactor;
and the air washing device is used for disturbing and vibrating the membrane filaments in the membrane bioreactor to peel off the attached solid dirt.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011575292.3A CN112592001A (en) | 2020-12-28 | 2020-12-28 | Treatment facility suitable for rural domestic sewage |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011575292.3A CN112592001A (en) | 2020-12-28 | 2020-12-28 | Treatment facility suitable for rural domestic sewage |
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| CN112592001A true CN112592001A (en) | 2021-04-02 |
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| CN202011575292.3A Pending CN112592001A (en) | 2020-12-28 | 2020-12-28 | Treatment facility suitable for rural domestic sewage |
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