CN115043495A - Rural sewage container type A 2 O integrated processing device - Google Patents
Rural sewage container type A 2 O integrated processing device Download PDFInfo
- Publication number
- CN115043495A CN115043495A CN202210787709.5A CN202210787709A CN115043495A CN 115043495 A CN115043495 A CN 115043495A CN 202210787709 A CN202210787709 A CN 202210787709A CN 115043495 A CN115043495 A CN 115043495A
- Authority
- CN
- China
- Prior art keywords
- water
- area
- zone
- pipe
- sludge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000010865 sewage Substances 0.000 title claims abstract description 113
- 238000012545 processing Methods 0.000 title claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 311
- 239000010802 sludge Substances 0.000 claims abstract description 134
- 238000003756 stirring Methods 0.000 claims abstract description 60
- 239000007788 liquid Substances 0.000 claims abstract description 47
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 45
- 238000000926 separation method Methods 0.000 claims abstract description 43
- 238000009826 distribution Methods 0.000 claims abstract description 38
- 238000004062 sedimentation Methods 0.000 claims abstract description 32
- 238000005192 partition Methods 0.000 claims description 51
- 230000005484 gravity Effects 0.000 claims description 39
- 238000006243 chemical reaction Methods 0.000 claims description 37
- 238000005345 coagulation Methods 0.000 claims description 34
- 230000015271 coagulation Effects 0.000 claims description 33
- 238000005273 aeration Methods 0.000 claims description 30
- 238000010992 reflux Methods 0.000 abstract description 22
- 230000001546 nitrifying effect Effects 0.000 abstract description 17
- 239000006228 supernatant Substances 0.000 abstract description 10
- 230000001954 sterilising effect Effects 0.000 abstract description 6
- 238000009434 installation Methods 0.000 abstract description 5
- 238000011272 standard treatment Methods 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 description 37
- 238000000034 method Methods 0.000 description 25
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 23
- 229910052698 phosphorus Inorganic materials 0.000 description 23
- 239000011574 phosphorus Substances 0.000 description 23
- 239000003814 drug Substances 0.000 description 22
- 230000000694 effects Effects 0.000 description 22
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 21
- 239000007787 solid Substances 0.000 description 18
- 239000000126 substance Substances 0.000 description 17
- 239000000645 desinfectant Substances 0.000 description 16
- 230000008569 process Effects 0.000 description 16
- 238000012423 maintenance Methods 0.000 description 15
- 238000001556 precipitation Methods 0.000 description 14
- 230000002829 reductive effect Effects 0.000 description 14
- 238000005842 biochemical reaction Methods 0.000 description 13
- 238000005265 energy consumption Methods 0.000 description 13
- 239000000945 filler Substances 0.000 description 12
- 241000894006 Bacteria Species 0.000 description 11
- 239000007789 gas Substances 0.000 description 10
- 238000002156 mixing Methods 0.000 description 10
- 229910052757 nitrogen Inorganic materials 0.000 description 10
- 230000008901 benefit Effects 0.000 description 9
- 239000010410 layer Substances 0.000 description 9
- 238000010276 construction Methods 0.000 description 8
- 238000013461 design Methods 0.000 description 8
- 230000014759 maintenance of location Effects 0.000 description 8
- 239000002351 wastewater Substances 0.000 description 8
- 230000000721 bacterilogical effect Effects 0.000 description 7
- 238000005189 flocculation Methods 0.000 description 7
- 230000016615 flocculation Effects 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 229920001397 Poly-beta-hydroxybutyrate Polymers 0.000 description 6
- 229920000331 Polyhydroxybutyrate Polymers 0.000 description 6
- 238000000151 deposition Methods 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 6
- 239000012528 membrane Substances 0.000 description 6
- 231100000719 pollutant Toxicity 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 230000008878 coupling Effects 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 230000008021 deposition Effects 0.000 description 5
- 239000008187 granular material Substances 0.000 description 5
- 230000008439 repair process Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 230000000903 blocking effect Effects 0.000 description 4
- 229940079593 drug Drugs 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 239000000047 product Substances 0.000 description 4
- 239000013049 sediment Substances 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 3
- 238000004061 bleaching Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- 230000035484 reaction time Effects 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- -1 COD Substances 0.000 description 2
- ZKQDCIXGCQPQNV-UHFFFAOYSA-N Calcium hypochlorite Chemical compound [Ca+2].Cl[O-].Cl[O-] ZKQDCIXGCQPQNV-UHFFFAOYSA-N 0.000 description 2
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- 229910019142 PO4 Inorganic materials 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 239000007844 bleaching agent Substances 0.000 description 2
- 210000005056 cell body Anatomy 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 235000009508 confectionery Nutrition 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 230000002147 killing effect Effects 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000011259 mixed solution Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010813 municipal solid waste Substances 0.000 description 2
- 235000015097 nutrients Nutrition 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 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
- IOVCWXUNBOPUCH-UHFFFAOYSA-M Nitrite anion Chemical compound [O-]N=O IOVCWXUNBOPUCH-UHFFFAOYSA-M 0.000 description 1
- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 description 1
- 206010033799 Paralysis Diseases 0.000 description 1
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000011001 backwashing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 210000004027 cell Anatomy 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002431 foraging effect Effects 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000001727 in vivo Methods 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000006213 oxygenation reaction Methods 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000035755 proliferation Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- 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
- C02F3/308—Biological phosphorus removal
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/0039—Settling tanks provided with contact surfaces, e.g. baffles, particles
- B01D21/0051—Plurality of tube like channels
-
- 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
- C02F3/20—Activated sludge processes using diffusers
- C02F3/201—Perforated, resilient plastic diffusers, e.g. membranes, sheets, foils, tubes, hoses
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/16—Total nitrogen (tkN-N)
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/18—PO4-P
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/22—O2
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
-
- 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
- C02F2303/14—Maintenance of water treatment installations
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Biodiversity & Conservation Biology (AREA)
- Organic Chemistry (AREA)
- Microbiology (AREA)
- Molecular Biology (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Biological Treatment Of Waste Water (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
Rural sewage container type A 2 The O integrated treatment device comprises an anaerobic area A, an anoxic area A, an aerobic area O, a mud-water separation area, an inclined tube sedimentation area and a contact disinfection area in sequence in a rectangular box; the zones are communicated by holes, pipelines or water collecting grooves. The anaerobic zone is provided with a water inlet pipe; the anaerobic zone and the anoxic zone are provided with air stirring pipes; the tail end of the aerobic zone and the middle upper part of the mud-water separation zone are respectively provided with an air stripping device for refluxing the nitrifying liquid and the suspended sludge to the anoxic zone; the inclined tube area is provided with a bottom water distribution perforated tube and a middle layer inclined tube, supernatant in the area meets the first-level A standard after contact sterilization, and finally the supernatant is discharged after being measured by a flow meter connected with the box body. The device has compact structure, convenient transportation and installation, simple operation and operation, and is suitable for villagesLow cost and high standard treatment of village sewage.
Description
Technical Field
The invention relates to the technical field of sewage treatment equipment, in particular to a rural sewage container type A 2 The O integrated technology, especially the active sludge method, the air lifting and the coagulating sedimentation technology are innovatively combined in the container type box body, and finally the effective consideration of low-cost sewage treatment and high-efficiency nitrogen and phosphorus removal is realized through the compactification of the structure, the standardization of the device and the simplicity and convenience of operation.
Background
The biochemical sewage treating technology is widely applied in different countries in the worldThe most convenient and efficient AAO (abbreviation of Anaerobic-aerobic) is also called A 2 O) nitrogen and phosphorus removal technology has become the mainstream of urban or town sewage treatment technology. However, in the field of container type sewage treatment equipment, due to the restriction of volume and size, the biological contact oxidation technology is mostly adopted in the past, and the Membrane Bioreactor (MBR) technology is mostly adopted recently; the former belongs to a biomembrane method technology, and the effluent of the former can only reach the first-class B standard of pollutant discharge standard of urban sewage treatment plants; the latter belongs to the membrane separation and A 2 The O activated sludge process compound technology replaces a secondary sedimentation tank at the tail end of a system with a membrane component, effluent can meet the current higher first-level A standard requirement, but the complex system, relatively high energy consumption, cleaning (online physical cleaning, chemical cleaning of various off-line medicaments which need to be specialized, cleaning in different time periods and the like) depending on an external team, aging of the membrane component, scaling and blockage need to be replaced, and the cost is high, so that the low-cost use of the technical product in vast rural areas and scattered residential points is limited.
It is well known that any sewage treatment facility needs one-time construction investment, and in addition, the daily sewage treatment in the design life period also needs to consume electricity and chemicals, remove slag and sludge, watch personnel, maintain and the like to maintain normal operation, so that the sewage treatment can never be carried on once and once for all, moreover, the sewage treatment is a professional with strong technical performance, and the effluent needs to continuously and stably reach the specified discharge standard, which is very difficult. In fact, because the lower salary of the country is unattractive to the professional talents in sewage treatment, the daily operation and maintenance cost of sewage treatment is not a long-term reliable source, and the small-scale sewage treatment has no scale effect, a plurality of treatment facilities with high manufacturing cost, complex operation and high operation cost are difficult to normally function, so that the water pollution treatment and water environment protection effects are greatly reduced.
Therefore, the invention provides a container type integrated device which has high nitrogen and phosphorus removal efficiency, good and stable effluent quality, low long-term operation cost, low purchasing and manufacturing cost, compact structure, standardized device, simple and convenient operation, convenient transportation and installation and small daily overhaul and maintenance workload, so as to meet the actual requirement of the current sewage treatment in the vast rural areas and deal with the reality of difficult talent foraging and environmental capital shortage of the environmental protection professional in the rural areas.
Disclosure of Invention
The invention aims to provide an innovative rural sewage container type A 2 The O integrated treatment device aims at solving the problems in the background technology, practically realizes both low-cost sewage treatment and high-efficiency nitrogen and phosphorus removal, relieves the financial and economic pressure of all parties for water environment protection, and really realizes sustainable development.
In order to achieve the purpose, the technical scheme of the invention is as follows:
overall, rural sewage container type A 2 The O integrated treatment device comprises a container type rectangular box body 10, and six functional areas including an anaerobic reaction area 1, an anoxic denitrification area 2, an aerobic nitrification area 3, a muddy water gravity separation area 4, a coagulation reaction-inclined tube sedimentation area 5 and a contact disinfection area 6, wherein the space is sequentially divided into the five partition plates including straight partition plates 11, 12 and 13 with holes and inclined partition plates 14 and 15. All areas in the box are communicated by holes, pipelines, components, water collecting grooves and the like. The sewage after pretreatment outside the tank enters the anaerobic reaction zone 1 at the head end in the tank from the water inlet pipe 7, biochemical and physicochemical strengthening treatment, air stripping circulation and chemical adding processes are sequentially carried out, the produced excess sludge is discharged through the large-opening sludge discharge pipe 24, and finally, clear water is discharged after being measured by the flowmeter 36 connected with the tail end of the tank body.
Further, the anaerobic reaction zone 1 is a rectangular space surrounded by a rectangular box body 10 and a first straight partition plate 11, the lower part of the starting end of the zone is provided with a sewage inlet pipe 7, and the bottom of the zone is provided with an anaerobic air stirring pipe 8;
the position of an inflow opening of the water inlet pipe 7 in the anaerobic reaction zone 1 and the flow direction of water distribution are positioned in the middle of the plane of the zone and at a position which is not more than 800mm away from the bottom plate, and the flow direction of the water distribution is to symmetrically distribute water to two sides and/or distribute water downwards;
2 parallel horizontal air stirring pipes 8 are arranged at the bottom of the anaerobic reaction zone 1, the height between the center of each stirring pipe and the bottom plate is less than or equal to 300mm, and the 2 stirring pipes are intermittently used in turn, namely the electromagnetic valves/electric valves which correspond to the compressed air pipelines connected with the stirring pipes in a one-to-one mode are intermittently opened and closed in turn to carry out short-time air stirring;
the anoxic denitrification area 2 is a rectangular space between a first straight partition plate 11 and a second straight partition plate 12, the bottom of the area is provided with an air stirring pipe 8 ', the stirring pipe is 2 parallel horizontal air stirring pipes 8', and the 2 stirring pipes are intermittently used in turn, namely, the electromagnetic valves/electric valves corresponding to the compressed air pipelines connected with the stirring pipes are intermittently opened and closed in turn to carry out short-time air stirring; a nitrifying liquid return pipe 19 and a suspended sludge return pipe 19' are arranged under the water surface of the region and close to the water surface;
the distance between the center of the pipeline opening of the nitrified liquid return pipe 19 at the water surface at the upper part of the anoxic denitrification area 2 and the center of the corresponding first small hole 9 on the first straight partition plate 11 is less than or equal to 1200 mm;
the distance between the center of the pipeline opening of the suspended sludge return pipe 19' at the water surface at the upper part of the anoxic denitrification area 2 and the center of the corresponding first small hole 9 on the first straight partition plate 11 is less than or equal to 1200 mm;
the aerobic nitrification zone 3 is a rectangular space between the second straight partition plate 12 and the third straight partition plate 13, the bottom of the zone is provided with a micropore aeration device 21, the tail end of the zone is provided with a point type gas stripping device 17 for refluxing nitrified liquid to the anoxic zone, the outlet of the gas stripping device is connected with a nitrified liquid return pipe 19, and the other end of the return pipe extends to the anoxic denitrification zone 2; the tail end of the area is also provided with a vertical diversion square pipe 22 for discharging water to the next area;
the upper opening of the vertical guide square pipe 22 is submerged below the designed water surface of the aerobic nitrification region 3, and the lower opening of the vertical guide square pipe is communicated with the muddy water gravity separation region 4 through the third middle hole 23 of the straight partition plate 13;
the bottom of the vertical guide square pipe 22 is a closed inclined plane, the horizontal inclination angle of the inclined plane is 35-65 degrees, the inclination angle is convenient for accumulated mud on the inclined plane to slide along with water flow, and the water inlet flow state of the mud-water gravity separation zone 4 is improved.
The muddy water gravity separation area 4 is a semi-Y-shaped space between the third straight partition plate 13 and the fourth inclined partition plate 14, and the bottom of the area is provided with a large-opening sludge discharge pipe 24; a linear gas stripping device 18 is arranged on the upper part of the middle part of the water depth and is used for refluxing suspended sludge to the anoxic zone, the outlet of the gas stripping device is connected with a suspended sludge return pipe 19', and the other end of the return pipe extends to the upper-layer starting end of the anoxic denitrification zone 2 and is close to the water surface; a medicament feeding port 25 is arranged above the middle of the water surface of the zone, a water collecting pipe/groove 26 is arranged on the water surface below the feeding port, the water collecting pipe/groove is connected with a pipe type mixer 27 below the feeding port in a T shape, the water collecting pipe/groove continuously penetrates through the inclined partition plate 14 downwards to enter the coagulation reaction-inclined pipe settling zone 5, and then the water collecting pipe/groove is connected with a water distribution perforated pipe 29 through an L-shaped pipeline;
the coagulation reaction-inclined tube sedimentation zone 5 is an S-shaped folded plate space between a fourth inclined partition plate 14 and a fifth inclined partition plate 15, perforated sludge discharge pipes 28 are arranged on two sides of the bottom of the zone, a water distribution perforated pipe 29 is arranged in the middle of the bottom of the zone, a special sewage inclined tube/inclined plate filler 30 is arranged in the middle of the zone, and a clear water collecting tank 31 for uniformly collecting water is arranged on the water surface; the water distribution perforated pipe 29 is horizontally arranged, the orifices of water distribution face downwards, the height of the center line of the pipeline is 150 mm-350 mm away from the bottom plate, and the caliber of the perforated pipe 29 is larger than that of the tubular mixer 27;
the contact disinfection area 6 is a trapezoidal space surrounded by a fifth inclined partition plate 15 and a rectangular box body 10, the contact disinfection area is provided with 3 vertical partition plates 33 and is used for dividing the volume of the contact disinfection area 6 into 4 equal parts, the top of the starting end of the contact disinfection area is also provided with a disinfectant device/adding point 32, the water surface at the tail end of the contact disinfection area is provided with a clear water outlet weir 35, the outlet of the outlet weir is connected to the outside of the box body through a pipeline, and finally the outlet is connected with a water outlet flow meter 36 outside the box body; the left side of the center of the bottom of the 1 st block and the 3 rd block of the vertical partition plate 33 is provided with a water passing hole 34.
A first small hole 9 is formed above the first straight partition plate 11 and close to the water surface, and is used for allowing water flow to flow from the anaerobic reaction area 1 to the anoxic denitrification area 2;
the bottom of the second straight partition plate 12 is provided with a second small hole 16 for water flow to flow from the anoxic denitrification region 2 to the aerobic nitrification region 3;
a third middle hole 23 is formed in the position, close to the bottom, of the third straight partition plate 13 and used for enabling water flow to flow from the aerobic nitrification region 3 to the muddy water gravity separation region 4;
the lower part of the fourth inclined clapboard 14 is provided with a hole for passing through an L-shaped pipeline and guiding water flow from the muddy water gravity separation area 4 to the coagulation reaction-inclined tube settling area 5;
the upper part of the fifth inclined clapboard 15 is provided with a through-wall hole of a clear water collecting tank 31 for water flow to enter a contact disinfection area 6 from a coagulation reaction-inclined tube sedimentation area 5;
the anaerobic air stirring pipe 8, the anoxic air stirring pipe 8', the point type air lifting device 17 and the linear air lifting device 18 are connected with an air pipeline 20 outside the top of the aerobic nitrification region 3; the microporous aeration device 21 is also connected with the air pipeline 20; the air pipeline 20 is connected with an aeration blower outside the tank through a pipeline;
the anaerobic reaction zone 1, the anoxic denitrification zone 2, the aerobic nitrification zone 3 and the muddy water gravity separation zone 4 form a first water surface, the coagulation reaction-inclined tube sedimentation zone 5 is a second water surface, the contact disinfection zone 6 is a third water surface, and the heights of the three water surfaces are sequentially reduced to form permanent power for water flow flowing from the water inlet pipe 7 to the water outlet weir 35;
the first water surface is 250-400 mm higher than the second water surface, and the second water surface is 200-350 mm higher than the third water surface.
The above-mentioned all component parts are mainly connected by welding and/or flange connection, and can be effectively connected according to the set plane position and height position, and finally made into the village sewage container type A 2 And (O) an integrated treatment device.
The invention relates to a rural sewage container type A 2 The operation of the O-integrated treatment device is the same.
It should be noted that, considering that the volume of the container-type sewage treatment device is very limited, considering the convenience of daily operation and preventing internal siltation and blockage, generally speaking, before entering the container-type tank body, the sewage must be pretreated outside the tank body, usually including procedures of grating slag blocking, regulation of a regulating tank, sludge and sand settling, lifting of a sewage pump, and the like, but the invention is not exceptional, so that the pretreated sewage can enter the invention for denitrification and dephosphorization biochemical treatment, and the working process is as follows:
in general, the wastewater from the wastewater inlet pipe 7 enters the anaerobic reaction zone 1, and before the wastewater comes from a wastewater conditioning lift pump (with stirring function) pool outside the tank, the conditioning pool receives not only the wastewater to be treated, but also the wastewater from the invention A 2 And O, discharging sludge of the integrated device, so that the sewage entering the device is actually mixed liquid of the sewage and the activated sludge. The mixed liquor is subjected to biochemical reaction under the anaerobic condition of the anaerobic reaction zone 1, wherein the phosphorus accumulating bacteria obtain energy by releasing phosphate in vivo, and the energy is used for absorbing organic matters which can be rapidly degraded in sewage and converting the organic matters into PHB (poly beta hydroxybutyrate) to be stored in cell bodies. When the phosphorus-accumulating bacteria enter the subsequent aerobic condition, PHB stored in the body is degraded to start the synthesis and proliferation of cells and absorb a large amount of phosphorus to form sludge with high phosphorus content, and the sludge is discharged out of the system along with the residual sludge, thereby achieving the purpose of biochemical phosphorus removal. Then, the sewage enters the anoxic denitrification area 2 from the first small hole 9 along with the flow, is mixed with the nitrifying liquid and the suspended sludge which flow back from the subsequent links, carries out denitrification biochemical reaction in the area, and enters the aerobic nitrification area 3 from the second small hole 16 for aeration treatment after denitrification. After sufficient aerobic biochemical reaction, one part of the obtained nitrified mixed liquid flows back to the anoxic zone 2 through the point-type gas stripping device 17 and enters the next round of circulation, and the other part enters the muddy water gravity separation zone 4. The mixed liquid entering the mud-water separation zone 4 is subjected to mud-water gravity separation, the separated suspended sludge flows back to the anoxic zone 2 through the wire type air stripping device 18 and enters the next round of circulation, the supernatant is collected and added with the chemicals and then is hydraulically mixed through the pipe type mixer 27, the mixture is guided into the bottom of the inclined tube precipitation zone 5 through the L-shaped pipeline to be uniformly distributed with water, the coagulation reaction-inclined tube precipitation materialization treatment is carried out in the inclined tube zone, at the moment, all residual pollutants are further removed, finally, the upper layer clear water is collected from the water collecting tank 31 and then enters the contact disinfection zone 6, and after the disinfectant is added for contact disinfection for half an hour, the clear water reaching the standard at the tail end of the box body is metered through a flowmeter 36 connected with the box body and then is discharged.
Further, the detailed and specific working process of the invention is as follows:
an anaerobic reaction zone 1: the sewage enters the lower part of the starting end of the anaerobic reaction zone 1 in the box from the water inlet pipe 7, the sewage is actually mixed liquid of the sewage and the activated sludge, and in the anaerobic environment of the zone (dissolved oxygen DO is less than or equal to 0.2mg/L), the activated sludge phosphorus accumulating bacteria release phosphate in the body to obtain energy, absorb organic matters which can be rapidly degraded in the sewage, convert the organic matters into PHB (poly beta hydroxybutyrate) and store the PHB in the cell body. In order to ensure homogeneous mass transfer and prevent activated sludge from depositing and silting in the area, an anaerobic air stirring pipe 8 is arranged at the bottom of the area to replace a conventional mechanical stirring device, and air bubbles which are released in turn, intermittently and in short time are used for churning and stirring the water body. The sludge-water mixed liquid which finishes the anaerobic phosphorus release task through the anaerobic biochemical reaction passes through the first small holes 9 (2 in total) on the first straight partition plate 11 at the tail end of the area and enters the next area to continue the new biochemical reaction.
And 2, an anoxic denitrification area: the muddy water mixed liquor entering the anoxic denitrification area 2 from the first small hole 9 is mixed with the nitrifying liquid and the suspended sludge which are refluxed together at the starting end of the water surface of the area, and then anoxic denitrification biochemical reaction (nitrogen overflow is formed) is started to be carried out immediately, the reaction substrates are nitrate and intermediate product nitrite carried by the nitrifying liquid, and the required nutrients are organic pollutants which can be biochemically degraded in the inlet water. Both the returned nitrifying liquid and the returned suspended sludge contain activated sludge. The nitrified liquid comes from the tail end of the subsequent aerobic nitrification zone 3 and is obtained by air stripping and refluxing through a point type air stripping device 17; the suspended sludge comes from the mud-water gravity separation zone 4 at the rear part and is stripped and refluxed by the linear stripping device 18. In the process of slow advancing and biochemical reaction of the mixed liquid in the anoxic zone, the mixed liquid is stirred by air bubbles intermittently released by the bottom 2 parallel horizontal air stirring pipes 8' in turn, so that the smooth overflow of the micro nitrogen bubbles in the reaction product is facilitated, and meanwhile, the sedimentation and deposition of activated sludge in the zone are prevented.
After that, the mixed liquid which completes the denitrification task in the anoxic denitrification area 2 passes through the second small holes 16 (2 in total) on the second straight partition plate 12 at the tail end of the area and enters the next area to continue the new biochemical reaction.
An aerobic nitrification area 3: in the mixed solution, aerobic microorganisms adsorb, oxidize, decompose and partially synthesize carbon-containing organic pollutants (part of carbon sources are consumed as carbon sources in the first two areas) in the sewage of the area into new bacteria under the condition of abundant Dissolved Oxygen (DO) in the area, nitrifying bacteria nitrify ammonia nitrogen in the sewage into nitrite nitrogen and nitrate nitrogen, and phosphorus accumulating bacteria absorb phosphorus in the sewage in an excessive manner. After sufficient aerobic biochemical reaction, when the mixed liquor slowly advances to the tail end of the area, various pollutants in the sewage are greatly removed, but the nitrified product with the changed form and not eliminated is required to flow back to the anoxic denitrification area 2 for anoxic denitrification to realize the reduction of Total Nitrogen (TN). At this time, most of the mixed liquor needs to flow back to the front anoxic zone 2 for denitrification and enter the next cycle through a point-type gas stripping device 17 at the tail end of the zone in a gas stripping mode, and a small part of the mixed liquor passes through a vertical flow guide square pipe 22 from top to bottom, then passes through a third middle hole 23 on a third straight partition plate 13, and enters the next zone for sludge-water gravity separation.
Sludge-water gravity separation zone 4: the mixed liquid after aeration treatment enters the lower part of the muddy water gravity separation zone 4, then the flow velocity is gradually slowed down because the sectional area of the horizontal plane is gradually increased in the process of ascending, and when the settling velocity (v) of solid particles at a certain height position Lower part ) With the velocity (v) of the water flow rising there On the upper part ) When the sludge particles are equal, the sludge particles are in a suspended static state, the upper part of the sludge forms a sludge-water interface, clear liquid on the interface is supernatant liquid which meets the requirement of the first-level B water quality index, the supernatant liquid is collected from a water collecting pipe/groove 26 at the water surface of the sludge-water separation zone, the supernatant liquid is mixed by adding drugs and then passes through the fourth inclined partition plate 14, the mixture enters the next zone, namely the inclined tube zone 5 to start deep treatment, and the suspended sludge intercepted by the sludge-water separation zone 4 continuously flows back to the anoxic zone 2 through the linear air stripping device 18 to enter the next round of circulation. In addition, the concentrated sludge precipitated at the bottom of the area is partially taken as excess sludge and discharged out of the system from a large-opening sludge discharge pipe 24 at the bottom, the excess sludge comprises aged sludge, biochemical phosphorus removal sludge and subsequent chemical phosphorus removal sludge, and the other part of the excess sludge is taken as anaerobic reaction sludge, enters a water inlet regulating tank of a pretreatment process outside a box body in a gravity flow mode controlled by a sludge discharge valve outside the box body in an automatic flow mode, and returns to the water inlet regulating tank of the pretreatment process of the invention by the lifting of a sewage pumpAn anaerobic reaction zone 1 for the phosphorus accumulating bacteria to return to the system for biochemical phosphorus removal. The sludge is discharged out of the system in the form of excess sludge, and the treatment and disposal of the sludge are harmlessly treated by other related equipment or methods.
Coagulation reaction-inclined tube settling zone 5: the supernatant liquid after the medicine adding and mixing passes through the fourth inclined clapboard 14 through the L-shaped pipeline and enters the inclined tube area 5 for the coagulation reaction-inclined tube sedimentation advanced treatment. The medicine is basic aluminum chloride (PAC) and ferric trichloride (FeCl) 3 ) And the metering and adding of the liquid medicine of the conventional water treatment medicament are carried out, and the mixing is the rapid hydraulic mixing of the medicament and the water in the tubular mixer 27. The coagulation reaction in the inclined tube area 5 is driven by the height difference of the water surface between the mud-water separation area 4 and the inclined tube area 5, namely the height difference of 250 mm-400 mm between the first water surface and the second water surface. The zone further removes residual phosphorus in an auxiliary chemical phosphorus removal mode, and simultaneously further removes residual Chemical Oxygen Demand (COD), Suspended Solids (SS), chroma and the like in a flocculation precipitation mode, so that indexes of COD, SS, Total Phosphorus (TP), chroma and the like of effluent can continuously and stably reach higher first-level A standard. In the area, floccules generated by chemical reaction of residual pollutants are intercepted and precipitated on the inner inclined wall of the filler and then slide down and fall to the bottom plate of the box body to form chemical sludge in the process of flowing through the special inclined pipe/inclined plate filler 30 for sewage upwards under the action of a famous superficial layer precipitation principle, and the chemical sludge contains aged dead activated sludge thallus fragments, removed COD and SS and also contains TP precipitates for chemical phosphorus removal. Under the action of the water pressure difference inside and outside the tank, the chemical sludge is discharged into a regulating tank (the water surface elevation is lower than the water surface of an inclined tube area) outside the tank body through perforated sludge discharge pipes 28 on two sides of the bottom, is lifted back to the muddy water gravity separation area 4 in front of the area through a regulating tank sewage pump, and is finally discharged out of the system in the form of residual sludge.
The clear water on the surface layer of the inclined tube area 5 passes through the upper part of the fifth inclined clapboard 15 after being collected by the clear water collecting tank 31 and enters the contact disinfection area 6 for final disinfection.
Contact sterilization zone 6: and a disinfectant device/adding point 32 arranged at the top of the starting end of the region is used for adding a disinfectant to the clean water converged into the starting end, the clean water containing the disinfectant is required to be in contact with the region and stay for 30min or more, after bacteria are fully killed, the clean water overflows from a water outlet weir 35 at the tail end of the region, and at the moment, the clean water with qualified bacteriological indexes is metered by a flow meter 36 connected with the tail end of the box body and then is discharged.
In order to ensure the disinfection effect and avoid short flow of the water flow which is in contact with the disinfection, the invention is provided with 3 vertical partition plates 33 in the contact disinfection area 6, wherein the left side of the center of the bottom of the No. 1 and No. 3 partition plates is provided with a water passing hole 34, thus the water flow can zigzag move forwards in the interval up and down, left and right, the water flow is ensured to be in contact with the area for 30min or more, and the aim of fully killing bacteria is achieved.
The invention adopts the following five creative technologies, is particularly suitable for non-MBR type container type sewage treatment devices, and has the following technical creativity, advancement and obvious practicability:
one-air double-rotation alternate intermittent short stirring technology
The technology is summarized as follows: under the action of biased air stirring, the fluids in the anaerobic zone and the anoxic zone do vertical left-handed and vertical right-handed eccentric motion, alternating motion and intermittent motion in a minimum oxygenation mode at different time.
The method specifically comprises the following steps: the invention relates to a rural sewage container type A 2 The O integrated treatment device is respectively arranged at two sides of the bottom of the anaerobic reaction zone 1 and the anoxic denitrification zone 2, 2 air stirring pipes 8 and 8', which can respectively control the operation, are symmetrically arranged, 2 air stirring pipes are parallel to each other and are horizontally arranged, and the installation height of the center of each pipe from a bottom plate is about 100 mm. The air inlet vertical pipe connected with the stirring pipes in a T shape is introduced from a compressed air pipeline at the top of the rectangular box body 10, and each stirring pipe is respectively connected with an electromagnetic valve/an electric valve which is a normally closed valve. When the stirring pipe works, the 2 stirring pipes are intermittently used in turn, namely, the PLC or the time controller alternately controls the opening and closing of the corresponding electromagnetic valve/electric valve at intervals: when one is opened, the other is in a closed state, the opening time is short, the closing time is long, and the opening and the closing are carried out in turn.
The original air double-rotation alternate intermittent short stirring technology is applied, and the main purposes are 3:
1, hydraulic machinery such as a submersible mixer or a paddle mixer and the like configured in a conventional anaerobic zone and an anoxic zone are cancelled, so that electric motors are reduced as much as possible, wearing parts are reduced, the probability of failure of the device is reduced as much as possible, and the device is simplified and is not complicated, so that the workload of maintenance and repair of the device is reduced, and the labor cost is reduced;
2, in order to overcome the defects of the prior air stirring, for example, although some container type sewage treatment devices also adopt air stirring, usually a single straight line-shaped or L-shaped or U-shaped or O-shaped stirring pipe, when the device is operated, a hydraulic dead angle is easily formed at a position slightly far away from the stirring pipe, and the quality of effluent water is seriously influenced because activated sludge at the dead angle is settled and deposited, then the agglomerated sludge is dead and floats upwards; or, the air quantity or the stirring time is increased to avoid silting and death, but the DO values of the anaerobic zone and the anoxic zone are increased, the anaerobic environment and the denitrification anoxic environment are adversely affected and even destroyed, so that the anaerobic phosphorus release and denitrification effects are poor, and the TP and TN values of the final effluent are increased and even DO not reach the standard; the problem can not occur by adopting the air double-rotation alternate intermittent short stirring technology which is originally created by the invention;
3, the anaerobic reaction zone 1 and the anoxic denitrification zone 2 are used for meeting the normal production requirements and energy-saving requirements, and are specifically represented as follows: the inventive double-rotation air stirring is applied to strengthen the mass transfer exchange between reaction substrates and nutrients in the mixed solution and activated sludge microorganisms, strengthen the mixing of sewage, the reflux nitrification liquid and the reflux suspended sludge, and strengthen the disturbance removal of micro nitrogen bubbles of denitrification products. In addition, because the air stirring is short and intermittent, the application of the original technology not only ensures the minimum input to the anaerobic zone and the anoxic zone DO, but also ensures the stirring energy consumption to be at the relatively lowest level, and plays a positive role in reducing the energy consumption of sewage treatment integrally.
Air stripping double-reflux maintenance-free energy-saving technology for container type sewage treatment
The technology is summarized as follows: in a narrow space of a container type device, a point type air lifting device is used for refluxing nitrified liquid at the tail end of an aerobic zone to an anoxic zone, meanwhile, a linear type air lifting device is used for refluxing suspended sludge in a mud-water gravity separation zone to the anoxic zone, and power required by air lifting is sourced from an aeration blower for sewage treatment without adding an additional power machine.
The method specifically comprises the following steps: the invention arranges a point-type gas stripping device 17 at the tail end of an aerobic nitrification region 3 for nitrifying liquid to flow back to an anoxic denitrification region 2 at the front end so as to meet the process requirement of denitrification treatment and replace installing a complicated nitrifying liquid reflux pump, a valve pipeline and an exhaust facility; meanwhile, a linear air lifting device 18 is arranged at the middle belt-shaped position of the muddy water gravity separation area 4 and is used for returning the intercepted suspended sludge to the anoxic denitrification area 2 at the front end after the muddy water is separated so as to meet the dynamic balance of the activated sludge of the biochemical treatment system, ensure the normal operation of the whole sewage treatment system and replace a sludge reflux pump, a valve pipeline and an exhaust facility which are complicated to install. The air lifting device in the box is not provided with underwater movable parts and underwater motors, all pipelines and valves are very simple in arrangement, the valve for controlling air lifting amount is positioned at the outer top of the box body, and the energy consumption of the required air is very small compared with that of a water pump machine, so that the parts of the two air lifting backflow in the box are maintenance-free and energy-saving.
By applying the gas stripping double-backflow maintenance-free energy-saving technology, the requirements of the process flow are met, two backflow pumps and complicated installation and occupied space are saved, operation management is simplified, energy is saved, the desire of not arranging electric equipment outside the box inside the box is realized, complicated maintenance is omitted, and the daily operation cost, the maintenance cost and the labor cost are greatly reduced.
Two-stage precipitation low water head energy-saving technology of three-stage and small-sized sewage equipment
The technology is summarized as follows: in small-size sewage equipment narrow and small space, utilize upflow type suspension clarification and pipe chute to deposit the sharing batter wall between them, ingenious realization is close to and inseparable two-stage deposits, and the head difference that the two-stage was deposited is little, and the primary deposits for not adding medicine natural gravity formula, and the second grade deposits for adding medicine coagulation-pipe chute formula, double-phase coupling, has finally realized that the dosing is few, the coagulating sedimentation is effectual, and the box space that occupies is few and the energy consumption and the little technical advantage of management cost.
The invention of the technology mainly solves three technical problems of a container type narrow space, one is that the actual sludge area load of the previous single-stage sedimentation is too high (the national design specification requires that the sludge solid load is less than or equal to 150 kg/m) 2 ·d～200kg/m 2 D, taking the wastewater into and out of a secondary sedimentation tank), wherein the single-stage secondary sedimentation tank can only ensure that the wastewater reaches the first-stage B standard; secondly, the previous single-stage precipitation cannot be well subjected to dosing coagulation precipitation in a box, so that efficient auxiliary chemical phosphorus removal and coagulation precipitation cannot be realized through low medicine consumption to further reduce pollutants such as COD, SS, chromaticity, TP and the like, and the current higher-requirement first-stage A standard cannot be met; thirdly, in the past, if two-stage sedimentation is to be realized, the sedimentation can only be respectively completed in two boxes, the water head difference between the two boxes can often reach 500-600 mm, the arrangement and the energy-saving use of an elevation system are greatly not facilitated, and the integral installation and integration of the device are also not facilitated.
The invention adopts the low-resistance quick tubular mixer 27 to carry out hydraulic mixing, carries out coagulation reaction in a large space at the bottom of the inclined tube area 5, and the power of the invention comes from the water surface height difference between the mud-water separation area 4 and the inclined tube area 5, namely the height difference of 250 mm-400 mm between the first water surface and the second water surface, no additional hydraulic machine is needed to provide power, and the invention only depends on the water surface height difference determined in the design to provide lasting power.
Therefore, the invention directly obtains high-standard effluent quality by utilizing the two-stage sedimentation low-waterhead energy-saving technology of small sewage equipment, saves precious box space, reduces system equipment investment, simplifies operation management, saves overall energy consumption, and reduces daily operation cost and maintenance cost.
Water distribution and contact coagulation technology for inclined tube sedimentation shallow pool
Generally, the water depth of an upflow counter-current inclined tube (plate) sedimentation tank for sewage treatment is generally 3.40-4.40 m, and the container type sewage treatment device is limited by the height limit of road transportation, so that the water depth of the inclined tube sedimentation of the container type device can be controlled to be not more than 2.50m (the hydraulic height difference with the muddy water gravity separation zone 4 in the previous area is considered), and therefore, the height data can be called 'earth-soil inch gold'.
The invention adopts the specific inclined tube sedimentation shallow pool water distribution and contact coagulation technology facing the container type sewage treatment device, successfully controls the inclined tube sedimentation water depth of the container type sewage treatment device to be about 2.40m, and obtains satisfactory effect.
The method specifically comprises the following steps: the depth of water in the upper part of the inclined tube area is 0.50m, the height of the inclined length of the standard inclined tube of 1.00m (60 degrees) is 0.866m, the height of the buffer layer in the bottom of the inclined tube area is 1.014m, and the total depth is 2.38 m. Therefore, the technology of shallow pool water distribution and contact coagulation adopted by the invention is one of core technologies of container type sewage treatment and belongs to the initiative of the container type sewage field, and the technology needs to consider not only uniform water distribution, but also sufficient flocculation time and contact coagulation effect in the height of 1.014m containing a buffer layer at the bottom, and also efficient sludge discharge (discharge of more rows of thick sludge and less water discharge as much as possible) of precipitated chemical sludge.
Further technical performance: the supernatant fluid after being hydraulically mixed by the dosing and tubular mixer 27 is connected with a water distribution perforated pipe 29 at the bottom of the inclined pipe area 5 through an L-shaped pipeline, the water distribution perforated pipe 29 is horizontally arranged, all water distribution orifices face downwards rather than upwards, the height of the pipeline central line from a bottom plate is 150-350 mm, and the caliber of the water distribution pipe 29 is larger than that of the tubular mixer 27; therefore, the water distribution flow is a jet flow towards the bottom plate, the flow velocity and flow difference of the starting end hole and the tail end hole of the water distribution perforated pipe 29 is very small (the large resistance orifice water distribution principle-large pipeline small orifice water distribution), then the linear water distribution is changed into the slow and uniform upwelling flow of the whole plane through the reflection action of the bottom plate to the projection periphery of two sides and orifices, thus the effective flocculation reaction time is prolonged, the flocculation effect is strengthened, and the short flow and the muddy water from local inclined pipes are avoided.
Water flow slowly and evenly rises on the whole plane and passes through the in-process that suspends the mud layer, with earlier floc and mud sedimentation granule fully contact, flocculation reaction effect has further been improved again, make floc granule grow bigger and bigger, the granule of local position is more and more closely knit and deposits near the U-shaped perforation mud pipe 28 of both sides, partial light tiny granule enters into pipe chute/swash plate filler 30 along with rising rivers, under the effect of famous shallow layer precipitation principle, light tiny granule is intercepted and is depositd on the skew wall in the filler, then the gliding falls to the bottom plate of the box and becomes mud. Sludge on two sides of the bottom plate in the tank is discharged through the perforated sludge discharge pipes 28 on two sides, lifted by a sewage pump of a regulating reservoir, returned to the sludge-water gravity separation zone 4 and discharged out of the system in the form of residual sludge.
The shallow pool water distribution and contact coagulation technology is applied, the layout of coagulation reaction-inclined tube precipitation in a narrow space is met, the reinforced physicochemical treatment process is realized, the residual pollutants such as COD, SS, TP, chromaticity and the like are further removed by using lower space occupation, a small amount of conventional reagents and extremely low energy consumption of two-stage precipitation coupling, the effluent is ensured to stably reach the first-level A standard, the operation management is simplified, the complicated cleaning, maintenance and maintenance of MBR are omitted, the expensive cost for replacing a membrane module is saved, the electricity charge is saved by 70%, and the daily operation cost and the labor cost are greatly reduced. In conclusion, significant advantages are obtained.
Integrated technology of five, small sewage container type coupling contact disinfection function
The technology is summarized as follows: at the end of container formula device, the skew wall exterior space of pipe chute filler promptly, in this trapezoidal space, make full use of this space coupling becomes the contact disinfection space, sets up 3 vertical baffles and divide into 4 equal divisions this space, thereby forms rivers "maze" and prevent to appear short-term flow.
The technical necessity is as follows: bacteriological index (faecal coliform number 10) in view of the first-class B criteria 4 n/L) and first stage A (10) 3 The unit/L) is 10 times, while the prior container type sewage treatment device does not pay attention to the disinfection problem and does not always consider the disinfection problem or only simplifies the use of an ultraviolet disinfection device (ultraviolet illumination attenuates along with the aging of a lamp tube, and bacteriological indexes hardly reach the standard), so the invention has the advantages of overcoming the difficulty and effectively solving the first-level A full index (containing the bacteriological indexes) by adopting the integrated technology of the container type sewage treatment coupled contact disinfection function) The difficult problem of reaching the standard, therefore, the coupling technology is necessary.
Specifically, a disinfectant device/adding point 32 is arranged at the top of the starting end of the contact disinfection area 6, a disinfectant is added to the clean water converged into the starting end, the clean water containing the disinfectant needs to be in contact with the area for 30min or more, after bacteria are sufficiently killed, the clean water overflows from an effluent weir 35 at the tail end of the area, and at the moment, the clean water with qualified bacteriological indexes is measured by a flow meter 36 connected with the tail end of the box body and then is discharged.
Furthermore, in order to ensure the disinfection effect and avoid short flow of water contacting with disinfection, the invention is provided with 3 vertical partition plates 33, wherein the left side of the center of the bottom of the 1 st 3 rd partition plate is provided with a water passing hole 34, so that the water flow can zigzag move forwards in the interval up and down, left and right, the water flow is ensured to contact and stay in the interval for 30min or more, and the purpose of fully killing bacteria is achieved.
The invention has the following five most obvious beneficial effects on two major aspects of technical economy:
1. can meet the high standard treatment requirement of container type non-MBR small sewage: the device is original and advanced in technology, high in nitrogen and phosphorus removal efficiency, good in water quality of effluent, capable of reaching the first-level A standard in all indexes, free of leakage and weak items, balanced in performance, controllable and adjustable in indexes such as a gas circuit, a water circuit, a mud circuit and a medicine circuit in operation, and easy to control water quality after reaching the standard;
2. the technical reliability is high: the device of the invention not only operates stably and reliably, but also shows that the technical principle, the technical parameters and the construction details are very reliable. The technical terms used by the invention are standard, have no hidden and difficult links, have no obscure concepts, are more free from being confused, have clear and clear internal structure, fully consider how to avoid siltation and blockage and facilitate maintenance when the technical route is planned and designed, and consider how to eliminate potential fault factors in advance from the deep level of theory, so that compared with other container type sewage treatment devices, a user can do without worry after normal use;
3. the whole cost is low, and the preparation is uncomplicated, and the sexual valence relative altitude: the device is designed and manufactured in a container type, the internal structure is compact, the reaction volume is maximized, the device is standardized, no special material (all conventional water treatment materials) exists, no movable part exists under water, and the possibility of silting and blocking is reduced to the minimum through the structure and process design; the air double-rotation stirring, the micropore aeration, the air stripping double-reflux, the large-opening sludge discharge, the tubular mixing, the reflection water distribution, the perforation sludge discharge, the uniform water collection, the labyrinth contact disinfection and the like which are adopted in the tank, and the parts such as a sewage lifting pump, an aeration blower and the like outside the tank are all conventional, have no expensive material requirement, no special parts/components and no expensive price restriction, so compared with a container type MBR device, the cost performance advantage is very obvious;
4. the daily operation cost is low, and the financial and economic pressures paid by using units or governments are low:
the invention is in the lowest power consumption and lowest drug consumption level in the field of small-sized sewage integrated treatment. The sewage treatment device has the advantages that the stirring energy consumption, the backflow energy consumption (multiple backflow and lift reduction), the medicament adding energy consumption, the blast aeration energy consumption (lower air-water ratio) and the medicament consumption (including bleaching fine powder disinfectant and the like) are reduced to the minimum or the efficiency is improved to the maximum compared with other sewage treatment devices. Therefore, the energy consumption and the drug consumption of the activated sludge process sewage treatment device are reduced to the lowest in the industry, namely, the container type device is adopted, and under the condition of the same sewage treatment capacity, the container type device is adopted, and the container type device is adopted according to the first-class A standard, so that the electricity consumption is the lowest, the drug consumption is the lowest, the direct operation cost is the lowest, and the economic cost of water environment protection is the lowest;
5. the operation is simple, the maintenance workload is small, and the maintenance (minor repair and major repair) cost amortization is low:
the requirement on the professional skill of the operation management personnel is low, the personnel can be put on duty after being trained slightly, and the situation that the talents cannot find out and stay due to complex operation of past equipment and high requirement on the skill and low salary is avoided, or the system is in a paralysis state due to the fact that no management is available. The invention has few faults, the faults are easy to observe and easy to repair, no special professional team is needed, namely, 36834a, \36834adiagnosis and maintenance, no expensive parts/assemblies need to be frequently replaced, and inclined pipes/inclined plate fillers, valves and the like which possibly need to be replaced are conventional general products for water treatment and are not limited by patent price factors. In a word, the single cost and the comprehensive cost such as the human resource cost, the repair cost of daily maintenance and/or professional maintenance and the like in the operation process are the lowest in the same type in the industry at present, so the sustainable development of environmental protection is most easily realized.
In conclusion, the rural sewage container type A of the invention 2 The O integrated treatment device has the advantages that the one-time construction cost (construction cost) is the lowest, the daily operating costs comprise manpower and maintenance cost, namely, the low-cost treatment and high-standard treatment of the rural sewage are realized, and the two are effectively considered. Therefore, the invention has wide application prospect.
Drawings
Fig. 1 is a schematic main sectional view of the present invention.
Fig. 2 is a schematic plan view of the present invention.
FIG. 3 is a schematic sectional view of an anaerobic reaction zone 1-1 according to the present invention.
FIG. 4 is a schematic sectional view of the anoxic denitrification zone 2-2 according to the present invention.
FIG. 5 is a schematic sectional view of the aerobic nitrification zone 3-3 according to the present invention.
FIG. 6 is a schematic sectional view of the end 4-4 of the aerobic nitrification zone of the present invention.
FIG. 7 is a schematic sectional view of the muddy water gravity separation zone 5-5 of the present invention.
FIG. 8 is a schematic cross-sectional view taken along line 6-6 of the present invention.
Fig. 9 is a schematic sectional view of 7-7 of the present invention.
FIG. 10 is a schematic sectional view of the coagulation reaction-inclined tube settling zone 8-8 of the present invention.
Fig. 11 is a schematic cross-sectional view of the contact sterilization zone 9-9 of the present invention.
Fig. 12 is a schematic cross-sectional view of the contact sterilization zone 10-10 of the present invention.
Wherein: 1-anaerobic reaction zone, 2-anoxic denitrification zone, 3-aerobic nitrification zone, 4-muddy water gravity separation zone, 5-coagulation reaction-inclined tube sedimentation zone, 6-contact disinfection zone, 7-water inlet pipe, 8-anaerobic air stirring pipe, 8 '-anoxic air stirring pipe, 9-first small hole, 10-rectangular box body, 11-first straight clapboard, 12-second straight clapboard, 13-third straight clapboard, 14-fourth inclined clapboard, 15-fifth inclined clapboard, 16-second small hole, 17-point type air stripping device, 18-line type air stripping device, 19-nitrifying liquid return pipe, 19' -micropore suspended sludge return pipe, 20-air pipeline, 21-micropore aeration device, 22-vertical diversion square pipe, 23-third middle hole sludge discharge pipe, 24-large hole sludge discharge pipe, 25-medicament feeding port, 26-water collection pipe/groove, 27-tubular mixer, 28-perforated sludge discharge pipe, 29-water distribution perforated pipe, 30-inclined pipe/inclined plate filler, 31-clear water collecting tank, 32-disinfectant device/feeding point, 33-vertical partition plate, 34-water passing hole, 35-water outlet weir, 36-flowmeter.
Detailed Description
In order to better understand the technical solution of the present invention, the following description is made with reference to specific examples. It is to be understood that the described embodiments are merely exemplary of some, not all embodiments of the invention, and that various changes, improvements, modifications, substitutions, integrations, modifications, etc. may be made therein without departing from the spirit and principles of the invention.
Example one
Rural sewage container formula A of this embodiment 2 O Integrated processing apparatus, processing Capacity 75m 3 D, referring to the external dimension design of a foreign trade container, specifically referring to the external length of 12.192m × width of 2.438m × height of 2.896m of a 40-size ultrahigh container 40HQ model, the external actual dimension of the rectangular box body 10 of the embodiment is as follows: the length is 7.50m, the width is 2.43m, the height is 2.88m, and the external dimension is not limited by the width and the height of domestic transport vehicles and domestic highways, so that the mass production in factories, namely the device standardization and the transport barrier-free are facilitated, please refer to fig. 1, fig. 2 and fig. 3.
The device specifically comprises a rectangular box body 10, a first straight partition plate 11, a second straight partition plate 12, a third straight partition plate 13, a fourth inclined partition plate 14, a fifth inclined partition plate 15 and five functional areas including an anaerobic reaction area 1, an anoxic denitrification area 2, an aerobic nitrification area 3, a mud-water gravity separation area 4, a coagulation reaction-inclined tube sedimentation area 5 and a contact disinfection area 6 which are sequentially partitioned by the five partition plates.
The anaerobic reaction zone 1, the anoxic denitrification zone 2, the aerobic nitrification zone 3 and the muddy water gravity separation zone 4 form a first water surface, the coagulation reaction-inclined tube sedimentation zone 5 is a second water surface, the contact disinfection zone 6 is a third water surface, and the heights of the three water surfaces are sequentially reduced to form permanent power for the water flow flowing from the water inlet pipe 7 to the water outlet weir 35.
The first water level is 300mm higher than the second water level, and the second water level is 280mm higher than the third water level.
The net height of the upper part of the first water surface is 170mm, the net height of the upper part of the second water surface is 470mm, and the net height of the upper part of the third water surface is 750 mm.
The width of the six functional areas is the same as the effective width of the rectangular box body 10.
The anaerobic reaction zone 1 is 1.00m long, the water depth is 2.68m, and the effective volume is 6.244m 3 The hydraulic retention time HRT is 2.00h, the average concentration X of the mixed liquid suspended solid is 4gMLSS/L, and the sludge reflux ratio R is 50%.
The length of the anoxic denitrification area 2 is 1.70m, the water depth is 2.68m, and the effective volume is 10.615m 3 The hydraulic retention time HRT is 3.40h, the average concentration X of the mixed liquid suspended solid is 6gMLSS/L, the BOD sludge load Ls is 0.0482kgBOD 5 V (kgMLSS d), Denitrification Rate K de ＝0.044kgNO 3 -N/(kgMLSS. d), sludge age θ C 21d, the sludge reflux ratio R is 50 percent, and the nitrifying liquid reflux ratio R is i ＝250％。
The length of the aerobic nitrification zone 3 is 2.21m, the water depth is 2.68m, and the effective volume is 13.800m 3 The hydraulic retention time HRT is 4.41h, the total nitrogen load rate is 0.043 (less than or equal to 0.05) kgTN/(kgMLSS.d), the average concentration X of the mixed liquid suspended solids is 6gMLSS/L, and the sludge age theta is C 21d, the sludge reflux ratio R is 50 percent, and the nitrifying liquid reflux ratio R is i ＝250％。
The upper part of the mud-water gravity separation zone 4 is 1.67m long, the bottom part of the mud-water gravity separation zone is 0.50m long, the water depth is 2.68m, and the effective volume is 6.375m 3 The precipitation time is 2.04h, and the surface load is 0.803m 3 /(m 2 ·h)。
The coagulation reaction-inclined tube sedimentation area 5 has the water surface length of 0.66m, but the actual length of the inclined tube area is 0.81m, the water depth is 2.38m, and the effective volume is 5.026m 3 The settling time is 1.608h, and the surface load of the inclined tube is 1.656m 3 /(m 2 H) in which the coagulation zone volume 2.471m is located in the lower part of the chute 3 The coagulation reaction time is 0.79 h-47.4 min.
The upper part of the contact disinfection area 6 is 0.25m long, the bottom part is 0.89m long, the water depth is 2.10m, and the effective volume is 3.51m 3 The contact disinfection time, namely the hydraulic retention time HRT is 1.12h and 67 min.
As shown in fig. 1, fig. 2 and fig. 3, in the anaerobic reaction zone 1, a sewage inlet pipe 7 with a caliber of DN65 is arranged at the center of the head end plane at a position 450mm away from the bottom plate; 2 parallel air stirring pipes 8' with the caliber of DN25 are arranged at the position of the bottom with the height of 100mm, and each pipe is provided with 6 phi 4mm air injection small holes which are arranged at 150mm and face downwards at 45 degrees. Each air stirring pipe 8' is connected with an air vertical pipe of DN20, and the top outside the box is correspondingly provided with an electromagnetic valve/an electric valve respectively and is connected with a PLC controller or a time controller. The tail end of the anaerobic reaction zone 1 is provided with 2 first small holes 9 (the size is 200 multiplied by 100mm) which are symmetrically arranged at the upper part of a first straight clapboard 11 and are communicated with the anoxic denitrification zone 2. In order to prevent sediment deposition at the corners of the bottom, a bottom conical slope is also arranged, and the enhancement effect of air stirring and flow guiding is also achieved.
As shown in fig. 1, 2 and 4, in the anoxic denitrification area 2, at a position close to the water surface below the water surface and close to the first small hole, a discharge pipe opening of a nitrification liquid return pipe 19 and a suspended sludge return pipe 19' are arranged, wherein the specifications of the discharge pipe openings are DN65, and the pipe openings are respectively 300mm away from the center of the first small hole 9; in addition, 2 parallel air stirring pipes 8' with the caliber of DN32 are arranged at the position of the bottom height of 100mm, and each pipe is provided with 10 phi 4mm air injection small holes which are arranged at 150mm and face downwards at 45 degrees. Each air stirring pipe 8' is connected with an air vertical pipe of DN25, and the top outside the box is correspondingly provided with an electromagnetic valve/an electric valve respectively and is connected with a PLC controller or a time controller. At the end of the anoxic denitrification region 2, the bottom of the second straight partition plate 12 is provided with 2 second small holes 16 (200 x 150mm in size) which are symmetrically arranged and communicated with the aerobic nitrification region 3. In order to prevent sediment deposition at the corners of the bottom, a bottom conical slope is also arranged, and the enhancement effect of air stirring and flow guiding is also achieved.
As shown in the figures 1, 2, 5 and 6, 15 general microporous aeration disks are arranged at the bottom in the aerobic nitrification zone 3, namely a microporous aeration device 21 with the specification of phi 215mm is arranged at the bottom, and is connected with an aeration blower valve pipeline and the like outside a tank through an aeration vertical pipe in the middle of the zone. The tail end of the zone is provided with 1 set of point type air stripping device 17, air stripping power is derived from an aeration blower pressure air pipe at the top outside the box, and the air stripping power and biochemical reaction blast aeration share the same power. The inlet of the point-type air stripping device 17 is arranged near the middle part of the water depth, the outlet of the point-type air stripping device is connected with a nitrifying liquid return pipe 19 close to the water surface through a pipeline pipe fitting, and finally the nitrifying liquid is sent to the position, close to the center of the first small hole 9, of the water surface of the anoxic denitrification area 2 at a distance of 300mm so as to be fully mixed with the sewage after anaerobic treatment. The middle position of the tail end plane of the aerobic nitrification area 3 is tightly attached to the third straight partition plate 13, a vertical flow guide square pipe 22 is further arranged, the size of the square pipe is 300 multiplied by 180mm, the top of the square pipe is 200mm away from the water surface, the bottom of the square pipe is sealed by an inclined plate, the horizontal angle of the inclined plate is 45 degrees, the square pipe is communicated with the mud-water gravity separation area 4 through a third middle hole 23 at the lower part of the third straight partition plate 13, and the size of the third middle hole 23 is 540 multiplied by 300 mm.
As shown in fig. 1, fig. 2, fig. 7, fig. 8 and fig. 9, the bottom of the muddy water gravity separation zone 4 is provided with a large-opening mud discharge pipe 24, the caliber of the mud discharge pipe is DN65, the mud discharge pipe comprises 2 downward mud discharge openings which are symmetrically arranged, the reason for forming the large opening is to prevent trash impurities such as fiber hair, candy paper and the like in the bottom layer of sludge from blocking the mud discharge openings, and a bottom conical slope is also arranged to prevent silt from accumulating at the bottom corners, and simultaneously, the effect of gravity concentration of the sludge is achieved; the upper part of the middle part of the water depth is provided with a linear air lifting device 18, air lifting power is derived from an aeration blower pressure air pipe at the top outside the tank, and the air lifting power and biochemical reaction blast aeration share the same power. The inlet of the linear air lifting device 18 is a sludge suction hole on a perforated sludge suction pipe which is longitudinally horizontal, the outlet is connected with a suspended sludge return pipe 19' close to the water surface through a pipeline pipe fitting, and finally the suspended sludge return pipe is sent to the position which is close to the water surface of the anoxic denitrification area 2 and is 300mm away from the center of the first small hole 9 so as to be fully mixed with the sewage after anaerobic treatment; a medicament feeding port 25 is arranged above the middle of the water surface of the region, a water collecting pipe/groove 26 is arranged below the water surface of the region and used for collecting supernatant in the region to the next region, the water collecting pipe/groove 26 is connected with a lower tubular mixer 27 in a T shape, the tubular mixer 27 is a low-resistance fixed helical blade rapid mixing type with the specification of DN 65; the lower part of the tubular mixer 27 is connected with a pipeline passing through the inclined clapboard 14 downwards to enter the coagulation reaction-inclined tube sedimentation area 5 and is connected with a water distribution perforated pipe 29 through an L-shaped pipeline.
As shown in fig. 1, 2, 9 and 10, in the coagulation reaction-inclined tube sedimentation zone 5, two perforated sludge discharge pipes 28 are respectively arranged on two sides of the bottom and connected in parallel to form a U shape with specification DN80, small sludge inlet holes with diameter of 24mm are uniformly arranged at the bottom of the pipeline, sludge is discharged by adopting internal and external static pressure difference, sludge is periodically discharged at intervals under the control of an electric valve, and because the sludge in the zone contains less impurities and is mainly flocculated and precipitated chemical sludge, a mature large-resistance perforated tube sludge discharge mode is adopted instead of large-opening sludge discharge, in addition, bottom conical slopes are also arranged on two side corners to achieve the effect of gravity concentration of the sludge, and the sludge is lifted by a sewage pump of an out-of-box regulation tank and returned to the sludge-water gravity separation zone 4 and then discharged out of the system in the form of residual sludge; the middle of the bottom of the inclined tube area 5 is provided with a DN80 with the specification of a water distribution perforated tube 29, the water distribution perforated tube is horizontally arranged with a downward water distribution orifice, the central line of the pipeline is 180mm away from the bottom plate, 6 phi 24mm water distribution holes are uniformly distributed, and a DN80 water distribution perforated tube 29 with the specification larger than a tubular mixer DN65 is adopted, so that the water distribution flow difference of the first hole and the last hole on the pipeline is ensured to be as small as possible; in addition, the middle part of the water depth of the region is provided with a special sewage standard honeycomb inclined pipe/inclined plate filler 30, the caliber is phi 80mm, the inclined length is 1000mm, and the inclination angle is 60 degrees, chemical sludge which is deposited on the inner inclined wall of the filler and then slides downwards to fall to the bottom plate of the box body is discharged through a perforated sludge discharge pipe 28; meanwhile, 3 parallel clear water collecting troughs 31 are also arranged on the water surface, and at the moment, the clear water on the surface layer meets the first-level A emission standard except the bacteriological index, and compared with other technologies, the filter equipment facilities needing frequent back washing are reduced, so that the manufacturing cost, the operation energy consumption and the management are greatly saved; in conclusion, the hydraulic mixing and flocculation reaction power of the area comes from the water surface height difference between the mud-water separation area 4 and the inclined pipe area 5, namely the 300mm height difference between the first water surface and the second water surface, no additional hydraulic machine is needed for providing power, and the durable power is provided only by means of the water surface height difference determined in the design. Finally, the clear water passes through the fifth inclined clapboard 15 after being collected by the water collecting tank 31 and enters the contact disinfection area 6 for disinfection treatment.
As shown in fig. 1, fig. 2, fig. 11 and fig. 12, 3 vertical partition boards 33 are arranged in the contact sterilization zone 6 to divide the space of the zone into 4 equal parts, wherein the left side of the bottom of the 1 st and 3 rd plates is provided with a water through hole 34, the size of the water through hole is 200 x 100mm, and the top of the 2 nd plate is 80mm lower than the designed water surface; a disinfectant device/adding point 32 is arranged above the starting end of the area, and a solid disinfectant solution is added into the gathered clear water, wherein the solid disinfectant can be slow-release chlorine tablets, bleaching powder, bleaching fine powder and the like, and can be purchased and selected according to market supply conditions; the tail end of the region close to the water surface is provided with a water outlet weir 35 with the specification of DN150, the elevation of the weir top is 40mm lower than the designed water surface, the outlet of the water outlet weir is connected to the outside of the box body through DN65 pipeline pipe fitting, the disinfected clean water overflows from the water outlet weir 35 and is discharged after being metered by a flow meter 36 connected with the tail end of the box body, and the specification of the flow meter is DN 65.
Village sewage container formula A of this embodiment 2 And the water quality of inlet water and the water quality of outlet water of the O integrated treatment device are shown in the following table.
The results show that: for general domestic sewage, the village sewage container type A of the embodiment 2 And the O integrated treatment device can stably reach the national first-level A standard of the effluent quality under the condition of two-level precipitation without filtration. This embodiment handles each timem 3 The direct cost of the sewage, such as power consumption (including sewage lifting, blast aeration and the like), medicine consumption, manpower, overhaul and amortization, is 0.58 yuan, and compared with the same scale of the existing container type sewage treatment primary A technology, the construction investment, the occupied area, the operation cost and the like can be saved by about 50 percent approximately, so the technical and economic benefits of the invention are very obvious, and good sewage denitrification and dephosphorization advanced treatment effect and technical and economic effect are obtained.
Example two
Village sewage container formula A of this embodiment 2 O Integrated processing apparatus, processing Capacity 150m 3 D, referring to the external dimension design of a foreign trade container, specifically referring to the external length of 12.192m × width of 2.438m × height of 2.896m of a 40-size ultrahigh container 40HQ model, the external actual dimension of the rectangular box body 10 of the embodiment is as follows: the length is 12.150m multiplied by the width is 2.43m multiplied by the height is 2.88m, the external dimension is not limited by the width and the height of domestic transport vehicles and domestic roads, thereby being convenient for the mass production and the manufacture of the device in factories, namely the standardization of the device and the barrier-free transportation, please refer to fig. 1, fig. 2 and fig. 3.
The construction form of this embodiment is the same as that of the first embodiment. To avoid duplication, the same contents are omitted, and different contents are as follows:
the width of the six functional areas is the same as the effective width of the rectangular box body 10.
The anaerobic reaction zone 1 is 2.00m long, the water depth is 2.68m, and the effective volume is 12.488m 3 The hydraulic retention time HRT is 2.00h, the average concentration X of the mixed liquid suspended solid is 4gMLSS/L, and the sludge reflux ratio R is 50%.
The length of the anoxic denitrification area 2 is 3.22m, the water depth is 2.68m, and the effective volume is 20.107m 3 The hydraulic retention time HRT is 3.22h, the average concentration X of the mixed liquid suspended solid is 6gMLSS/L, the BOD sludge load Ls is 0.0467kgBOD 5 V (kgMLSS d), Denitrification Rate K de ＝0.0436kgNO 3 -N/(kgMLSS. d), sludge age θ C 21d, the sludge reflux ratio R is 50 percent, and the nitrifying liquid reflux ratio R is i ＝250％。
The length of the aerobic nitrification region 3 is 4.02m, the water depth is 2.68m, and the effective volume is 25.102m 3 The hydraulic retention time HRT is 4.01h, the total nitrogen load rate is 0.0429 (less than or equal to 0.05) kgTN/(kgMLSS.d), the average concentration of the mixed liquid suspended solid X is 6gMLSS/L, and the sludge age theta is C 21d, the sludge reflux ratio R is 50 percent, and the nitrifying liquid reflux ratio R is i ＝250％。
The upper part of the muddy water gravity separation zone 4 is 1.90m long, the bottom part of the muddy water gravity separation zone is 0.73m long, the water depth is 2.68m, and the effective volume is 7.811m 3 The settling time is 1.25h, and the surface load is 1.412m 3 /(m 2 ·h)。
The length of the water surface of the coagulation reaction-inclined tube settling zone 5 is 0.75m, but the actual length of the inclined tube zone is 0.90m, the water depth is 2.38m, and the effective volume is 5.525m 3 The settling time is 0.884h, and the surface load of the inclined tube is 2.98m 3 /(m 2 H) in which the coagulation zone volume 2.6837m in the lower part of the chute 3 The coagulation reaction time is 0.4293h, 25.7 min.
The upper part of the contact disinfection area 6 is 0.25m long, the bottom part is 0.89m long, the water depth is 2.10m, and the effective volume is 3.51m 3 The contact disinfection time, namely the hydraulic retention time HRT is 0.561h and 33.6 min.
As shown in fig. 1, fig. 2 and fig. 3, in the anaerobic reaction zone 1, a sewage inlet pipe 7 with a caliber of DN80 is arranged at the center of the head end plane at the position 500mm away from the bottom plate; 2 parallel air stirring pipes 8' with the caliber of DN32 are arranged at the position of the bottom with the height of 100mm, and each pipe is provided with 10 phi 4mm air injection small holes which are arranged at 170mm and face downwards at 45 degrees. Each air stirring pipe 8' is connected with an air vertical pipe of DN32, and the top outside the box is correspondingly provided with an electromagnetic valve/an electric valve respectively and is connected with a PLC controller or a time controller. The tail end of the anaerobic reaction zone 1 is provided with 2 first small holes 9 (the size is 200 multiplied by 200mm) on the upper part of a first straight clapboard 11, and the first small holes are symmetrically arranged and communicated with the anoxic denitrification zone 2. In order to prevent sediment deposition at the corners of the bottom, a bottom conical slope is also arranged, and the enhancement effect of air stirring and flow guiding is also achieved.
As shown in fig. 1, 2 and 4, in the anoxic denitrification area 2, at a position close to the water surface below the water surface and close to the first small hole, a discharge pipe opening of a nitrification liquid return pipe 19 and a suspended sludge return pipe 19' are arranged, wherein the specifications of the discharge pipe openings are DN80, and the pipe openings are respectively 300mm away from the center of the first small hole 9; in addition, 2 parallel air stirring pipes 8' with the caliber of DN40 are arranged at the position of 100mm of the bottom, and each pipe is provided with 16 phi 4mm air injection small holes which are arranged at @140mm and face downwards at 45 degrees. Each air stirring pipe 8' is connected with an air vertical pipe of DN40, and the top outside the box is correspondingly provided with an electromagnetic valve/an electric valve respectively and is connected with a PLC controller or a time controller. The tail end of the anoxic denitrification area 2 is provided with 2 second small holes 16 (the size is 200 multiplied by 200mm) at the bottom of the second straight partition plate 12, and the second small holes are symmetrically arranged and communicated with the aerobic nitrification area 3. In order to prevent sediment deposition at the corners of the bottom, a bottom conical slope is also arranged, and the enhancement effect of air stirring and flow guiding is also achieved.
As shown in the figures 1, 2, 5 and 6, 27 general microporous aeration discs are arranged at the bottom of the aerobic nitrification zone 3, namely a microporous aeration device 21 with the specification of phi 215mm is connected with an aeration blower valve pipeline and the like outside a tank through an aeration vertical pipe in the middle of the zone. The tail end of the zone is provided with 1 set of point type air stripping device 17, air stripping power is derived from an aeration blower pressure air pipe at the top outside the box, and the air stripping power and biochemical reaction blast aeration share the same power. The inlet of the point-type air stripping device 17 is arranged near the middle part of the water depth, the outlet of the point-type air stripping device is connected with a nitrifying liquid return pipe 19 close to the water surface through a pipeline pipe fitting, and finally the nitrifying liquid is sent to the position, close to the first small hole 9, of the water surface of the anoxic denitrification area 2 at a distance of 300mm so as to be fully mixed with the sewage after anaerobic treatment. The middle position of the tail end plane of the aerobic nitrification region 3 is tightly attached to the third straight partition plate 13, a vertical flow guide square pipe 22 is further arranged, the size of the square pipe is 400 multiplied by 240mm, the top of the square pipe is 200mm away from the water surface, the bottom of the square pipe is sealed by an inclined plate, the horizontal angle of the inclined plate is 45 degrees, the square pipe is communicated with the mud-water gravity separation region 4 through a third middle hole 23 at the lower part of the third straight partition plate 13, and the size of the third middle hole 23 is 740 multiplied by 400 mm.
As shown in fig. 1, fig. 2, fig. 7, fig. 8 and fig. 9, the bottom of the muddy water gravity separation zone 4 is provided with a large-opening mud discharge pipe 24, the caliber of the mud discharge pipe is DN65, the mud discharge pipe comprises 2 downward mud discharge openings which are symmetrically arranged, the reason for forming the large opening is to prevent trash impurities such as fiber hair, candy paper and the like in the bottom layer of sludge from blocking the mud discharge openings, and a bottom conical slope is also arranged to prevent silt from accumulating at the bottom corners, and simultaneously, the effect of gravity concentration of the sludge is achieved; the upper part of the middle part of the water depth is provided with a linear air lifting device 18, air lifting power is derived from an aeration blower pressure air pipe at the top outside the tank, and the air lifting power and biochemical reaction blast aeration share the same power. The inlet of the linear air lifting device 18 is a sludge suction hole on a longitudinal horizontal perforated sludge suction pipe, the outlet of the linear air lifting device is connected with a suspended sludge return pipe 19' close to the water surface through a pipeline pipe fitting, and finally the suspended sludge return pipe is sent to the position close to the center of the first small hole 9 and at a distance of 300mm on the water surface of the anoxic denitrification area 2 so as to be fully mixed with sewage after anaerobic treatment; a medicament feeding port 25 is arranged above the middle of the water surface of the region, a water collecting pipe/groove 26 is arranged below the water surface of the region and used for collecting supernatant in the region to the next region, the water collecting pipe/groove 26 is connected with a lower tubular mixer 27 in a T shape, the tubular mixer 27 is a low-resistance fixed helical blade rapid mixing type with the specification of DN 80; the lower part of the tubular mixer 27 is connected with a pipeline passing through the inclined clapboard 14 downwards to enter the coagulation reaction-inclined tube sedimentation area 5 and is connected with a water distribution perforated pipe 29 through an L-shaped pipeline.
As shown in fig. 1, 2, 9 and 10, in the coagulation reaction-inclined tube sedimentation zone 5, two perforated sludge discharge pipes 28 are respectively arranged on two sides of the bottom and connected in parallel to form a U shape with specification DN80, small sludge inlet holes with diameter of 24mm are uniformly arranged at the bottom of the pipeline, sludge is discharged by adopting internal and external static pressure difference, sludge is periodically discharged at intervals under the control of an electric valve, and because the sludge in the zone contains less impurities and is mainly flocculated and precipitated chemical sludge, a mature large-resistance perforated tube sludge discharge mode is adopted instead of large-opening sludge discharge, in addition, bottom conical slopes are also arranged on two side corners to achieve the effect of gravity concentration of the sludge, and the sludge is lifted by a sewage pump of an out-of-box regulation tank and returned to the sludge-water gravity separation zone 4 and then discharged out of the system in the form of residual sludge; the middle of the bottom of the inclined tube area 5 is provided with a water distribution perforated tube 29 with specification DN100, the perforated tube is horizontally arranged, water distribution orifices are downward, the central line of the pipeline is 200mm away from the bottom plate, 8 phi 24mm water distribution holes are uniformly distributed, and the DN100 water distribution perforated tube 29 which is one specification larger than the tubular mixer DN80 is adopted, so that the water distribution flow difference of the first hole and the last hole on the pipeline is ensured to be as small as possible; in addition, the middle part of the water depth of the region is provided with a special sewage standard honeycomb inclined pipe/inclined plate filler 30, the caliber is phi 80mm, the inclined length is 1000mm, and the inclination angle is 60 degrees, chemical sludge which is deposited on the inner inclined wall of the filler and then slides downwards to fall to the bottom plate of the box body is discharged through a perforated sludge discharge pipe 28; meanwhile, 3 parallel clear water collecting troughs 31 are also arranged at the water surface, and at the moment, the clear water on the surface layer meets the first-level A emission standard except bacteriological indexes; in conclusion, the hydraulic mixing and flocculation reaction power of the area comes from the water surface height difference between the mud-water separation area 4 and the inclined pipe area 5, namely the 300mm height difference between the first water surface and the second water surface, no additional hydraulic machine is needed for providing power, and the durable power is provided only by means of the water surface height difference determined in the design. Finally, the clear water passes through the fifth inclined clapboard 15 after being collected by the water collecting tank 31 and enters the contact disinfection area 6 for disinfection treatment.
As shown in fig. 1, fig. 2, fig. 11 and fig. 12, 3 vertical partition boards 33 are arranged in the contact sterilization zone 6 to divide the space of the zone into 4 equal parts, wherein the left side of the bottom of the 1 st and 3 rd plates is provided with a water through hole 34, the size of the water through hole is 250 x 120mm, and the top of the 2 nd plate is 80mm lower than the designed water surface; a disinfectant device/adding point 32 is arranged above the starting end of the area, and a solid disinfectant solution is added into the gathered clear water, wherein the solid disinfectant can be slow-release chlorine tablets, bleaching powder, bleaching fine powder and the like, and can be purchased and selected according to market supply conditions; the tail end of the region is close to the water surface, an effluent weir 35 with the specification of DN200 is arranged, the elevation of the weir top is 40mm lower than the designed water surface, the outlet of the effluent weir is connected to the outside of the box body through DN80 pipeline pipe fittings, the disinfected clean water overflows from the effluent weir 35 and is discharged after being measured by a flow meter 36 connected with the tail end of the box body, and the specification of the flow meter is DN 80.
Village sewage container formula A of this embodiment 2 And the water quality of inlet water and the water quality of outlet water of the O integrated treatment device are shown in the following table.
The results show that: village sewage container formula A of this embodiment 2 And the O integrated treatment device can stably reach the national first-level A standard of the effluent quality under the condition of two-level precipitation without filtration. This example deals with per m 3 The direct cost of the sewage, such as power consumption (including sewage lifting, blast aeration and the like), medicine consumption, manpower, overhaul and amortization and the like, is 0.55 yuan in total, and compared with the same scale of the existing first-level A technology of container type sewage treatment, the construction investment, the occupied area, the operation cost and the like, the cost can be saved by about 50 percent approximately, so the technical and economic benefits of the invention are very obvious, and good advanced treatment effect and technical and economic effect are obtained.
The invention relates to a rural sewage container type A 2 The O integrated treatment device only needs to regularly observe index conditions of a sludge discharge graduated cylinder SV30 (sludge sedimentation ratio-volume of activated sludge settled in a 1 liter graduated cylinder for 30min, mL/L) and SVI (sludge volume index-volume of 1g dry sludge after the activated sludge settled for 30min, mL/g), and properly adjusts and determines how long an interval is opened for one-time sludge discharge according to an operation procedure by combining with the actual observation. Besides, the invention is a village sewage container type A 2 The operation of the O integrated treatment device is very simple and direct, the O integrated treatment device can be normally in an unattended state, and only an on-duty person needs to regularly observe whether the abnormity of blockage, overflow, muddy water and the like exists, therefore, the rural sewage container type A of the invention 2 The high efficiency, high reliability, energy saving and lowest operating cost of the O-integrated treatment device are clearly evident.
From the two embodiments, the invention can treat rural domestic sewage with different scales, can carry out advanced treatment with low cost to directly reach the first-level A standard, and does not need to additionally add a complex filter tank or MBR membrane module. Therefore, compared with other container type sewage treatment equipment, the invention has the advantages of simple process, low construction cost and low operation cost.
Finally, it should be noted that: the above are only preferred embodiments of the present invention, and are not intended to limit the present invention, and it will be obvious to those skilled in the art that modifications may be made to the technical solutions of the embodiments of the present invention, or equivalents may be substituted for some of the technical features, and any modifications, equivalents, improvements, etc. made herein are included in the scope of the present invention.
Claims (6)
1. Rural sewage container type A 2 O integrated processing apparatus, its characterized in that: the device consists of six functional areas including a rectangular box body 10 and an anaerobic reaction area 1, an anoxic denitrification area 2, an aerobic nitrification area 3, a muddy water gravity separation area 4, a coagulation reaction-inclined tube sedimentation area 5 and a contact disinfection area 6 which are sequentially connected in the box, wherein each functional area is sequentially separated by straight partition plates 11, 12 and 13 with holes and inclined partition plates 14 and 15, and the straight partition plates are communicated with the inclined partition plates through corresponding holes on the partition plates. The head end of the anaerobic zone 1 is provided with a sewage inlet pipe 7, and the tail end of the disinfection zone 6 is provided with a clear water outlet weir 35. An air pipeline 20 is arranged outside the top of the aerobic zone 3, one end of the air pipeline is connected with an aeration blower outside the tank, and the other end of the air pipeline is connected with a micropore aeration device 21 at the bottom of the aerobic zone 3; in addition, the pipeline is also connected with 4 air supply branch pipes which are respectively connected with an anaerobic air stirring pipe 8, an anoxic air stirring pipe 8', a point type air lifting device 17 and a line type air lifting device 18 in the front end 4 areas in sequence through valve pipelines.
2. A rural sewage container type a as claimed in claim 1 2 O integrated processing apparatus, its characterized in that: the position of the inflow port of the water inlet pipe 7 in the anaerobic reaction zone 1 and the flow direction of water distribution are positioned in the middle of the plane of the zone and at a position which is less than or equal to 800mm away from the bottom plate, and the flow direction of the water distribution is to symmetrically distribute water to both sides and/or distribute water downwards.
3. A rural sewage container type a as claimed in claim 1 2 O integrated processing apparatus, its characterized in that: the bottom of the anaerobic reaction zone 1 is provided with 2 parallel horizontal air stirring pipes 8, the height between the center of each stirring pipe and the bottom plate is less than or equal to 300mm, and the 2 stirring pipes are intermittently used in turn, namely the solenoid valves/electric valves which are in one-to-one correspondence with the compressed air pipelines connected with the stirring pipes are intermittently opened and closed in turn to carry out short-time air stirring.
4. A rural sewage container type a as claimed in claim 1 2 O integrated processing apparatus, its characterized in that: the distance between the center of the pipeline opening of the nitrified liquid return pipe 19 at the water surface at the upper part of the anoxic denitrification area 2 and the center of the corresponding first small hole 9 on the first straight partition plate 11 is less than or equal to 1200 mm.
5. A rural sewage container type a as claimed in claim 1 2 O integrated processing apparatus, its characterized in that: the distance between the center of the pipeline opening of the suspended sludge return pipe 19' at the water surface at the upper part of the anoxic denitrification area 2 and the center of the corresponding first small hole 9 on the first straight clapboard 11 is less than or equal to 1200 mm.
6. A rural sewage container type a as claimed in claim 1 2 O integrated processing apparatus, its characterized in that: the bottom of the vertical guide square pipe 22 is a closed inclined plane, and the horizontal inclination angle of the inclined plane is 35-65 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210787709.5A CN115043495A (en) | 2022-07-06 | 2022-07-06 | Rural sewage container type A 2 O integrated processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210787709.5A CN115043495A (en) | 2022-07-06 | 2022-07-06 | Rural sewage container type A 2 O integrated processing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115043495A true CN115043495A (en) | 2022-09-13 |
Family
ID=83165194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210787709.5A Pending CN115043495A (en) | 2022-07-06 | 2022-07-06 | Rural sewage container type A 2 O integrated processing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115043495A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103395947A (en) * | 2013-08-18 | 2013-11-20 | 武汉宝捷能环境工程技术有限公司 | V-shaped gas stripping reflux two-stage precipitation integrated sewage treatment tank |
| CN203291786U (en) * | 2013-05-08 | 2013-11-20 | 桑德环境资源股份有限公司 | Tank body internal recycling gas stirring device of waste water adjusting tank and waste water adjusting tank |
| CN204265745U (en) * | 2014-12-07 | 2015-04-15 | 深圳市朗坤环保有限公司 | For the mud purging system in anaerobic fermentation of kitchen waste tank |
| CN109354336A (en) * | 2018-12-14 | 2019-02-19 | 谢绍舜 | The optimum organization system of town domestic sewage processing |
| CN110714221A (en) * | 2019-11-29 | 2020-01-21 | 无锡星亿智能环保装备股份有限公司 | Electroplating solution air stirring pipeline |
| CN112551828A (en) * | 2020-12-24 | 2021-03-26 | 华夏碧水环保科技有限公司 | Low-carbon-nitrogen-ratio rural domestic sewage treatment device and treatment process thereof |
| CN215249635U (en) * | 2021-04-28 | 2021-12-21 | 天津市生态环境科学研究院(天津市环境规划院、天津市低碳发展研究中心) | Compressed air stirring reaction device |
| CN216323651U (en) * | 2021-09-30 | 2022-04-19 | 哈尔滨哈飞航空工业有限责任公司 | Infiltration detects washing station water supply system |
| WO2022121321A1 (en) * | 2020-12-12 | 2022-06-16 | 北京工业大学 | Method for enhancing nitrogen and phosphorus removal by combining multi-stage ao short-range denitrification coupling anammox process with sludge hydrolytic acidification |
| CN218709623U (en) * | 2022-07-06 | 2023-03-24 | 武汉辰雨环保科技有限公司 | Rural sewage container formula A2O integration processing apparatus |
-
2022
- 2022-07-06 CN CN202210787709.5A patent/CN115043495A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203291786U (en) * | 2013-05-08 | 2013-11-20 | 桑德环境资源股份有限公司 | Tank body internal recycling gas stirring device of waste water adjusting tank and waste water adjusting tank |
| CN103395947A (en) * | 2013-08-18 | 2013-11-20 | 武汉宝捷能环境工程技术有限公司 | V-shaped gas stripping reflux two-stage precipitation integrated sewage treatment tank |
| CN204265745U (en) * | 2014-12-07 | 2015-04-15 | 深圳市朗坤环保有限公司 | For the mud purging system in anaerobic fermentation of kitchen waste tank |
| CN109354336A (en) * | 2018-12-14 | 2019-02-19 | 谢绍舜 | The optimum organization system of town domestic sewage processing |
| CN110714221A (en) * | 2019-11-29 | 2020-01-21 | 无锡星亿智能环保装备股份有限公司 | Electroplating solution air stirring pipeline |
| WO2022121321A1 (en) * | 2020-12-12 | 2022-06-16 | 北京工业大学 | Method for enhancing nitrogen and phosphorus removal by combining multi-stage ao short-range denitrification coupling anammox process with sludge hydrolytic acidification |
| CN112551828A (en) * | 2020-12-24 | 2021-03-26 | 华夏碧水环保科技有限公司 | Low-carbon-nitrogen-ratio rural domestic sewage treatment device and treatment process thereof |
| CN215249635U (en) * | 2021-04-28 | 2021-12-21 | 天津市生态环境科学研究院(天津市环境规划院、天津市低碳发展研究中心) | Compressed air stirring reaction device |
| CN216323651U (en) * | 2021-09-30 | 2022-04-19 | 哈尔滨哈飞航空工业有限责任公司 | Infiltration detects washing station water supply system |
| CN218709623U (en) * | 2022-07-06 | 2023-03-24 | 武汉辰雨环保科技有限公司 | Rural sewage container formula A2O integration processing apparatus |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102161554B (en) | Anaerobic hydrolysis-acidification and anoxic-aerobic process-sequencing batch reactor (AO-SBR) integrated sewage treatment reaction tank | |
| CN106904796B (en) | Multistage diversion type SSMBBR sewage treatment system and treatment method | |
| CN106927638B (en) | Multistage diversion type MBBR sewage treatment system and treatment method | |
| CN202297322U (en) | Bioaugmentation efficient activated sludge in-situ reduction device | |
| CN106116045A (en) | A kind of efficiently villages and small towns waste water treating and reutilizing device and technique thereof | |
| WO2022237019A1 (en) | Miniature integrated jbr sewage treatment integrated device | |
| CN109095708B (en) | Sewage treatment equipment | |
| CN108249691B (en) | Integrated low-energy-consumption distributed village and town domestic sewage treatment system | |
| CN210855718U (en) | Novel rural sewage treatment system | |
| CN203866158U (en) | Concentric type integrated sewage treatment system | |
| CN218709623U (en) | Rural sewage container formula A2O integration processing apparatus | |
| CN115072934A (en) | Container type sewage nitrogen and phosphorus removal advanced treatment device | |
| CN218146052U (en) | Biochemical and physical integrated treatment tank for village and town sewage A2O | |
| CN218146053U (en) | Container type sewage treatment equipment complete system | |
| CN218146051U (en) | A2O integration sewage treatment pond complete set system | |
| CN115010255B (en) | AOA (advanced organic framework) -process-based sludge granulation treatment system and debugging method | |
| CN213738791U (en) | Biochemical system for treating domestic sewage | |
| CN216141334U (en) | Simple and efficient integrated domestic sewage treatment device | |
| CN213865815U (en) | Integrated domestic sewage treatment equipment | |
| CN115072873A (en) | Sewage A 2 O-shaped integrated pond system and process method | |
| CN115043495A (en) | Rural sewage container type A 2 O integrated processing device | |
| CN212076761U (en) | Container type integrated sewage treatment equipment | |
| CN219929829U (en) | Container type sewage denitrification and dephosphorization advanced treatment device | |
| CN213680293U (en) | Integrated biological fluidized bed sewage treatment device | |
| CN211999015U (en) | Improved UCT coupling biological rotating disc sewage treatment system for black and odorous water body |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |