CN107265771A - A kind of system and method for deeply treating wastewater - Google Patents
A kind of system and method for deeply treating wastewater Download PDFInfo
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- CN107265771A CN107265771A CN201710602042.6A CN201710602042A CN107265771A CN 107265771 A CN107265771 A CN 107265771A CN 201710602042 A CN201710602042 A CN 201710602042A CN 107265771 A CN107265771 A CN 107265771A
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- 238000000034 method Methods 0.000 title claims abstract description 43
- 239000002351 wastewater Substances 0.000 title claims abstract description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 115
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
- 239000003610 charcoal Substances 0.000 claims abstract description 59
- 230000003647 oxidation Effects 0.000 claims abstract description 55
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 55
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 48
- 239000010865 sewage Substances 0.000 claims abstract description 33
- 238000012545 processing Methods 0.000 claims abstract description 13
- 238000000926 separation method Methods 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 239000007787 solid Substances 0.000 claims abstract description 5
- 239000010802 sludge Substances 0.000 claims description 31
- 239000002002 slurry Substances 0.000 claims description 31
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 21
- 239000001301 oxygen Substances 0.000 claims description 21
- 229910052760 oxygen Inorganic materials 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 19
- 230000000694 effects Effects 0.000 claims description 14
- 239000012528 membrane Substances 0.000 claims description 13
- 230000009471 action Effects 0.000 claims description 10
- 238000005273 aeration Methods 0.000 claims description 10
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 9
- 230000015556 catabolic process Effects 0.000 claims description 8
- 238000006731 degradation reaction Methods 0.000 claims description 8
- 239000000843 powder Substances 0.000 claims description 7
- 230000015572 biosynthetic process Effects 0.000 claims description 6
- 230000001954 sterilising effect Effects 0.000 claims description 6
- 238000004659 sterilization and disinfection Methods 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 230000018044 dehydration Effects 0.000 claims description 4
- 238000006297 dehydration reaction Methods 0.000 claims description 4
- 238000007654 immersion Methods 0.000 claims description 4
- 230000011218 segmentation Effects 0.000 claims description 4
- 235000012489 doughnuts Nutrition 0.000 claims description 3
- 238000012805 post-processing Methods 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 3
- 230000007261 regionalization Effects 0.000 claims description 3
- 229920002472 Starch Polymers 0.000 claims description 2
- 238000004140 cleaning Methods 0.000 claims description 2
- 230000002708 enhancing effect Effects 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 239000008213 purified water Substances 0.000 claims description 2
- 235000019698 starch Nutrition 0.000 claims description 2
- 238000010992 reflux Methods 0.000 claims 3
- 239000008107 starch Substances 0.000 claims 1
- 239000003344 environmental pollutant Substances 0.000 abstract description 8
- 231100000719 pollutant Toxicity 0.000 abstract description 8
- 238000006396 nitration reaction Methods 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000003014 reinforcing effect Effects 0.000 abstract description 4
- 238000004065 wastewater treatment Methods 0.000 abstract description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 32
- 229910052757 nitrogen Inorganic materials 0.000 description 16
- 238000005276 aerator Methods 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 8
- 238000009826 distribution Methods 0.000 description 4
- 230000033228 biological regulation Effects 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000007772 electroless plating Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 230000018199 S phase Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011953 bioanalysis Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012851 eutrophication Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000010841 municipal wastewater Substances 0.000 description 1
- 230000001546 nitrifying effect Effects 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 230000037452 priming Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000011426 transformation method Methods 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
Classifications
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
Abstract
The invention discloses a kind of system and method for deeply treating wastewater, system includes AA/O oxidation ditches, second pond, Powdered Activated Carbon submerged ultrafiltration reactor；AA/O oxidation ditches are made up of anaerobic pond, anoxic pond, Aerobic Pond, and Powdered Activated Carbon submerged ultrafiltration reactor is pre-mixed pond by charcoal water and submerged ultrafiltration separate tank is constituted；The sewage of sewage treatment plant enters AA/O oxidation ditches after pretreatment facility processing by conduit, the water outlet of AA/O oxidation ditches sends into second pond by conduit and carries out separation of solid and liquid, clear water after separation is sent into Powdered Activated Carbon submerged ultrafiltration reactor by conduit, and the clear water after separation is discharged by conduit；Present invention employs the deeply treating wastewater technology that " reinforcing nitration denitrification denitrogenation technique ", " biological activated carbon ", " CUF " three are combined, system stable effluent quality can be stably reached《Urban wastewater treatment firm pollutant emission standard》One-level A effluent standards, realize sewage treatment plant carries mark.
Description
Technical field
The invention belongs to advanced treatment of wastewater technical field, and in particular to a kind of sewage treatment plant carry mark transformation system and
Method, and in particular to one kind is using enhanced nitrogen removal process, biological activated carbon, Powdered Activated Carbon submerged ultrafiltration reactor
(CUF) what three kinds of techniques were combined is used for the system and method that sewage treatment plant proposes mark transformation.
Background technology
During " 13 ", major part sewage treatment plant of China faces the problem of proposing mark upgrading.Urban sewage disposal
The organic concentration of factory's sewage is relatively low, and total nitrogen content is higher, and total nitrogen is the leading indicator for reflecting body eutrophication, total nitrogen
Control is gradually put into control standard.
China's municipal wastewater treatment plant uses bioanalysis to carry out denitrogenation substantially, and temperature and organic carbon source are to influence the two of denitrification effect
Individual key factor.Low temperature limits the activity of nitrifier and denitrifying bacterium, thus influence sewage treatment plant to polluter especially
It is the degradation effect of nitrogen-containing pollutant, and energy is originated and electron donor necessary to organic carbon source is anti-nitration reaction, if carbon source
The not enough degree that will directly affect denitrification process progress, causes water outlet total nitrogen exceeded.
General denitrification process carbon source requirement is BOD5/ TN ＞ 4.0, and urban sewage plant wastewater influent BOD5Content is low,
Total nitrogen content is high, BOD5/ TN is between 1.0~2.5, belongs to low carbon source urban sewage.
Research shows, when aerobic zone is under complete aeration condition, i.e. DO (dissolved oxygen) concentration ＞ 2.5mg/L, DO concentration
Height, is conducive to organic matter degradation and nitrifying process, therefore water outlet COD, ammonia nitrogen removal effect are good；But high DO is unfavorable for denitrification and entered
OK, cause total nitrogen removal effect bad.
The characteristics of AA/O oxidation ditch process can combine AA/O techniques and oxidation ditch process, using surface aeration equipment oxygen supply simultaneously
Plug-flow is assisted with impeller under water so that uneven distribution is presented in the dissolved oxygen in oxidation ditch, easily form lacking for regional area
Oxygen environment, promotes the generation of simultaneous nitrification-denitrification, is conducive to making full use of carbon source, realizes that the biology under the conditions of low-carbon-source takes off
Nitrogen.
In AA/O oxidation ditches, adjustment aerobic zone DO (dissolved oxygen) concentration can promote to be formed in region in below 2.0mg/L
The alternate form of Anoxic/Aerobic, is conducive to the progress of nitration denitrification, realizes the removal of total nitrogen, but due to the reduction of DO concentration,
Cause the decline of aerobic zone organic pollutant degradation efficiency, water outlet COD, ammonia nitrogen concentration do not reach to be aerated completely under equal conditions
The treatment effect of (DO ＞ 2.5mg/L).
The content of the invention
In view of the deficienciess of the prior art, the invention provides system and the side that a kind of sewage treatment plant proposes mark transformation
Method.
The technical scheme that is used of system of the present invention is：A kind of system of deeply treating wastewater, it is characterised in that：Including
AA/O oxidation ditches, second pond, Powdered Activated Carbon submerged ultrafiltration reactor；The AA/O oxidation ditches by anaerobic pond, anoxic pond,
Aerobic Pond is constituted, and the Powdered Activated Carbon submerged ultrafiltration reactor is pre-mixed pond and submerged ultrafiltration separate tank by charcoal water
Composition；
The sewage of sewage treatment plant enters the AA/O oxidation ditches after pretreatment facility processing by conduit, described
The water outlet of AA/O oxidation ditches sends into the second pond by conduit and carries out separation of solid and liquid, and the clear water after separation is sent into described by conduit
In Powdered Activated Carbon submerged ultrafiltration reactor, the clear water after separation is discharged by conduit；
A charcoal slurry part for the second pond is back in the Aerobic Pond of AA/O oxidation ditches by conduit forms bioactivity
Charcoal technique, improves the biochemical action of sludge；Charcoal slurry in the Aerobic Pond is back to AA/O oxidation ditches by a conduit part
In anoxic pond；
A charcoal slurry part for the Powdered Activated Carbon submerged ultrafiltration reactor is back to AA/O oxidation ditches by conduit
Aerobic zone in formed BAC process, improve sludge biochemical action；A part is back to powder activity by conduit
The charcoal water premixing pond of charcoal submerged ultrafiltration reactor.
The technical scheme that is used of method of the present invention is：A kind of method of deeply treating wastewater, it is characterised in that including
Following steps：
Step 1：Biochemical denitrification and biological activated carbon processing；
Sewage enters the AA/O oxidation ditches after pretreatment facility processing, and sewage is respectively by anaerobism, anoxic, aerobic
Three stages carried out biochemical degradation；The AA/O oxidation ditches water outlet sends into the second pond and carries out separation of solid and liquid；
A charcoal slurry part for second pond is back to formation biological activated carbon work in the Aerobic Pond of AA/O oxidation ditches by conduit
Skill, improves the biochemical action of sludge；Charcoal slurry in Aerobic Pond is back to by a conduit part in the anoxic pond of AA/O oxidation ditches；
Step 2：Powdered Activated Carbon advanced treating；
The water outlet of AA/O oxidation ditches enters the charcoal water premixing pond of Powdered Activated Carbon submerged ultrafiltration reactor, and from powder
The charcoal slurry of backflow in activated carbon submerged ultrafiltration reactor is mixed, and charcoal water mixed liquid is super by Powdered Activated Carbon immersion
Filter membrane reactor filtration, purification, further removes ammonia nitrogen, degraded COD, discharge purified water；Charcoal slurry is partly refluxed to Aerobic Pond and charcoal water
It is pre-mixed pond.
The characteristics of the inventive method has following and beneficial effect：
(1) it is characteristic of the invention that by enhanced nitrogen removal process, BAC process, ultrafiltration membrance filter technique this three's phase
Carry out first passing through adjustment DO concentration in advanced treating, AA/O oxidation ditches to remove total nitrogen with reference to sewage plant sewage；CUF charcoals are starched back
AA/O oxidation ditches formation biological activated carbon is flow to, reinforcing biochemical action is with the COD that further degrades, ammonia nitrogen；Carried out finally by CUF
Powder electroless plating and membrane filtration effect degraded COD, water outlet items pollutant load is reduced to standard after being handled through system
Within.
(2) aerator is set in aerobic zone in AA/O oxidation ditches, during operation, aeration intensity is changed by subregion segmentation,
Adjust aeration quantity size so that aerobic zone DO fluctuation of concentrations, anoxic/aerobic alternating state is presented, may be implemented in low-carbon-source water inlet
When effective biological denitrificaion, nitration denitrification also takes full advantage of carbon source while aerobic zone；From CUF backflows in AA/O oxidation ditches
Biological activated carbon can improve Sludge Property, using powder electroless plating add microbiological oxidation ammonia nitrogen, absorption degradation COD；
Although because aerobic zone is anoxic/aerobic alternating state, aeration intensity is intermittent not enough so that aerobic biochemical effect can not be most
Carried out under good operating mode, result in that COD, ammonia nitrogen removal are not sufficiently effective, but it is long-term in CUF membrane cisternas maintain stable high concentration charcoal slurry,
Advantageously form and be rapidly achieved adsorption equilibrium, not degradable pollutant in the leading portion oxidation ditch water outlet that can effectively degrade is removed
COD, ammonia nitrogen, while strengthening system reply water quality and the stability of water impact, water outlet is transparent after being handled through system；COD, ammonia
The pollutant loads such as nitrogen, total nitrogen can be met《Urban wastewater treatment firm pollutant emission standard》One-level A standards.
(3) this technique has stable effluent quality, and automaticity is high, and operation and operational management are simple, large-scale engineering
Change uses modular assembly, safeguards and changes facility, the advantages of large-scale engineering practices simple.
Brief description of the drawings
Fig. 1：The system construction drawing of the embodiment of the present invention；
Fig. 2：The method schematic of the embodiment of the present invention.
Embodiment
Understand for the ease of those of ordinary skill in the art and implement the present invention, the present invention is made into one below in conjunction with the accompanying drawings
The detailed description of step, it will be appreciated that implementation example described herein is merely to illustrate and explain the present invention, is not used to limit
The present invention.
See the system of Fig. 1, the present invention a kind of deeply treating wastewater provided, including AA/O oxidation ditches, second pond, powder
Activated carbon submerged ultrafiltration reactor (CUF), feeding apparatus for powdered activated charcoal, clear water reserviors, sterilization pool, sludge concentration tank and anti-
Rinse subsystem；
The sewage of sewage treatment plant enters in AA/O oxidation ditches, oxidation ditch after pretreatment facility processing and is divided into anaerobism
Area, anoxic zone, aerobic zone.Aerator is provided with aerobic zone, aerator oxygen supply into aerobic zone passes through the regulation of aeration quantity
To adjust dissolved oxygen (DO) concentration and distribution, strengthen anoxic zone denitrification denitrogenation, aerobic zone is realized while creating conditions
Simultaneous nitrification-denitrification denitrogenation, to reach the purpose for improving overall denitrification effect.AA/O oxidation ditch water outlets are consolidated through second pond
Liquid is separated, and clear water enters in Powdered Activated Carbon submerged ultrafiltration reactor (CUF)；If being set in submerged ultrafiltration separate tank
Dry group external-compression type submerged ultrafiltration, external-compression type submerged ultrafiltration is using doughnut enhancing film silk, and membrane aperture is 0.005-
0.02μm；Submerged ultrafiltration separate tank is provided with feeding apparatus for powdered activated charcoal, and the charcoal for preparing predetermined concentration is starched, and is led to
Piping is pumped into CUF in external-compression type submerged ultrafiltration by diaphragm metering pump；
The clear water that Powdered Activated Carbon submerged ultrafiltration reactor is isolated a, part is pooled to clear water reserviors, for anti-
Rinse subsystem and water for cleaning is provided；Discharged after the sterilized pond sterilization of another part；
A charcoal slurry part for Powdered Activated Carbon submerged ultrafiltration reactor is back to the good of AA/O oxidation ditches by conduit
BAC process is formed in oxygen area, improves the biochemical action of sludge；A part is back to Powdered Activated Carbon by conduit and soaked
Do not have the charcoal water premixing pond of formula ultrafiltration membrane reactor；
The useless charcoal in useless charcoal slurry, AA/O oxidation ditches in Powdered Activated Carbon submerged ultrafiltration reactor is starched and biochemistry is dirty
Useless charcoal slurry and biochemical sludge in mud, second pond, periodically by discharge of pipes to sludge concentration tank, dehydration post processing.
The present invention technical principle be：
Present invention employs the depth that enhanced nitrogen removal process, BAC process, ultrafiltration membrance filter technique three are combined
Degree processing Technology of Sewage, particular technique principle is as follows：
AA/O oxidation ditches, which are divided into three regions of anaerobic- anoxic- oxic, aerobic zone along water (flow) direction, sets aerator,
Aerator changes aeration intensity when being aerated operation by segmentation and regionalization, adjusts the size of aeration quantity so that described is aerobic
The control of dissolved oxygen DO concentration is fluctuated in the range of 0.2~2.0mg/L in area, is preferably lacked with realizing to present in described aerobic zone
Oxygen/aerobic alternate state.By adjusting dissolved oxygen DO concentration and distribution, strengthen anoxic zone denitrification denitrogenation, create simultaneously
Nitration denitrification denitrogenation while condition realizes described aerobic zone is made, to reach the purpose for improving overall denitrification effect.
Meanwhile, the phase of being drafted in CUF membrane cisternas discharges a small amount of activated carbon and starched to AA/O oxidation ditches formation BAC process.
Aerobic zone is provided with aerator, and Powdered Activated Carbon, activated sludge can be made fully to be contacted with sewage, strengthens biochemical action, and degraded is dirty
Thing is contaminated, water outlet toxicity is reduced, effectively improves COD clearance.
Powdered Activated Carbon in absorption water pollutant, CUF is sufficiently mixed using high concentration Powdered Activated Carbon and sewage to accumulate
At concentrations up to 30000mg/L, active carbon layer continuous updating strengthens silk milipore filter come in separation water using external-compression type doughnut
Perforated pipe aerating regulation is arranged under Powdered Activated Carbon, membrane module, air-flow drives current strong disturbance Powdered Activated Carbon can be made to be filled with sewage
Divide haptoreaction and update film surface.Produce water conservancy and extract clear water out with self priming pump formation negative pressure.Whole service cycle water, quiet containing production
Put, backwash process, flexibly set by automatic control equipment.
CUF leading portions set a charcoal water to be pre-mixed pond, and the high concentration charcoal slurry that flowed back out of membrane cisterna is mixed with water inlet, hydraulic retention
Time about 30~40min, premixing bottom of pond portion arrangement perforated pipe aerating regulation, can make Powdered Activated Carbon and the abundant haptoreaction of sewage.
See the method for Fig. 2, the present invention a kind of deeply treating wastewater provided, comprise the following steps：
Step 1：Biochemical denitrification and BAC process processing；
Sewage enters AA/O oxidation ditches after pretreatment facility processing, and sewage passes through anaerobism, anoxic, aerobic three rank respectively
Aerator is set in Duan Jinhang biochemical degradations, aerobic zone, and aerator oxygen supply into aerobic zone is changed by segmentation and regionalization and exposed
Gas intensity, adjusts the size of aeration quantity, and to change dissolved oxygen DO concentration and distribution, the described anoxic zone denitrification of reinforcing takes off
Nitrogen, while nitration denitrification denitrogenation while creating anoxic/aerobic alternate condition to realize described aerobic zone, is carried with reaching
The purpose of high totality denitrification effect.
A Powdered Activated Carbon slurries part is back to AA/O oxidation ditches formation BAC process in CUF, can effectively control
Sludge bulking processed, strengthens biochemical action, and the sewage after biochemical degradation, strengthened denitrification processing enters second pond, carries out solid-liquid point
From.
Step 2：Powdered Activated Carbon submerged ultrafiltration reactor (CUF) processing；
The water outlet of AA/O oxidation ditches enters the charcoal water premixing pond of CUF leading portions, is mixed with the charcoal slurry flowed back out of CUF；
External-compression type submerged membrane is provided with CUF, the charcoal slurry of suitable concn is prepared herein, external-compression type immersion is pumped into by diaphragm metering pump
In film, charcoal water mixed liquid is purified by ultrafiltration membrance filter, further removes ammonia nitrogen, degraded COD, and water purification enters after sterilization pool sterilization
Discharge, the charcoal slurry being trapped is partly refluxed to AA/O oxidation ditches and premixing pond；
Step 3：Treatment of Sludge；
The biochemical sludge and charcoal of AA/O oxidation ditches discharge, which are starched, to be accumulated in pond and is periodically emitted into sludge concentration tank, and CUF is
Stable charcoal concentration is maintained, except backflow is outer, a small amount of charcoal of phase discharge is drafted and starches to sludge concentration tank, the sludge in sludge concentration tank is defeated
Dewatering system dehydration is delivered to, and outward transport is centrally disposed.
Present invention employs " reinforcing nitration denitrification denitrogenation technique ", " biological activated carbon ", " Powdered Activated Carbon immersion surpasses
The deeply treating wastewater technology that filter membrane reactor (CUF) " three is combined, anti-nitre is nitrified by adjusting dissolved oxygen concentration to strengthen
The AA/O oxidation ditches of change effect can effectively remove total nitrogen, and BAC process can effectively control sludge bulking, improve sludge
Can, CUF can further adsorb pollutant, degraded COD, remove ammonia nitrogen, and system stable effluent quality can be stably reached《Cities and towns are dirty
Water treatment plant's pollutant emission standard》One-level A effluent standards, realize sewage treatment plant carries mark.
It should be appreciated that the part that this specification is not elaborated belongs to prior art.
It should be appreciated that the above-mentioned description for preferred embodiment is more detailed, therefore it can not be considered to this
The limitation of invention patent protection scope, one of ordinary skill in the art is not departing from power of the present invention under the enlightenment of the present invention
Profit is required under protected ambit, can also be made replacement or be deformed, each fall within protection scope of the present invention, this hair
It is bright scope is claimed to be determined by the appended claims.
Claims (10)
1. a kind of system of deeply treating wastewater, it is characterised in that：Including AA/O oxidation ditches, second pond, Powdered Activated Carbon submergence
Formula ultrafiltration membrane reactor；The AA/O oxidation ditches are made up of anaerobic pond, anoxic pond, Aerobic Pond, the Powdered Activated Carbon immersion
Ultrafiltration membrane reactor is pre-mixed pond by charcoal water and submerged ultrafiltration separate tank is constituted；
The sewage of sewage treatment plant enters the AA/O oxidation ditches, the AA/O oxygen after pretreatment facility processing by conduit
Change ditch water outlet and the second pond progress separation of solid and liquid is sent into by conduit, the clear water after separation is sent into the powder by conduit and lived
In property charcoal submerged ultrafiltration reactor, the clear water after separation is discharged by conduit；
A charcoal slurry part for the second pond is back to formation biological activated carbon work in the Aerobic Pond of AA/O oxidation ditches by conduit
Skill, improves the biochemical action of sludge；Charcoal slurry in the Aerobic Pond is back to the anoxic of AA/O oxidation ditches by a conduit part
In pond；
A charcoal slurry part for the Powdered Activated Carbon submerged ultrafiltration reactor is back to the good of AA/O oxidation ditches by conduit
BAC process is formed in oxygen area, improves the biochemical action of sludge；A part is back to Powdered Activated Carbon by conduit and soaked
Do not have the charcoal water premixing pond of formula ultrafiltration membrane reactor.
2. the system of deeply treating wastewater according to claim 1, it is characterised in that：Provided with aeration dress in the Aerobic Pond
Put, for the segmentation and regionalization progress oxygen supply into the Aerobic Pond so that the dissolved oxygen DO concentration control of nitrification liquid exists in Aerobic Pond
Fluctuated in the range of 0.2~2.0mg/L, to realize presentation anoxic/aerobic alternating state in the Aerobic Pond.
3. the system of described deeply treating wastewater according to claim 1, it is characterised in that：The submerged ultrafiltration separation
Some groups of external-compression type submerged ultrafiltrations are set in pond；The submerged ultrafiltration separate tank is provided with Powdered Activated Carbon and adds dress
Put, the charcoal for preparing predetermined concentration is starched, and is sent into by pipeline in external-compression type submerged ultrafiltration.
4. the system of deeply treating wastewater according to claim 3, it is characterised in that：The external-compression type submerged ultrafiltration
Using doughnut enhancing film silk, membrane aperture is 0.005-0.02 μm.
5. the system of the deeply treating wastewater according to claim 1-4 any one, it is characterised in that：The system is also matched somebody with somebody
It is equipped with clear water reserviors, sterilization pool and backwash subsystem；
The backwash subsystem is used to clean the Powdered Activated Carbon submerged ultrafiltration reactor；The powder is lived
Property the clear water isolated of charcoal submerged ultrafiltration reactor, a part is pooled to clear water reserviors, for being provided to backwash subsystem
Water for cleaning；Discharged after the sterilized pond sterilization of another part.
6. the system of the deeply treating wastewater according to claim 1-4 any one, it is characterised in that：The system is also matched somebody with somebody
It is equipped with sludge concentration tank；The useless charcoal in useless charcoal slurry, AA/O oxidation ditches in the Powdered Activated Carbon submerged ultrafiltration reactor
Useless charcoal slurry and biochemical sludge in slurry and biochemical sludge, second pond, periodically by discharge of pipes to the sludge concentration tank, dehydration
Post processing.
7. a kind of method of deeply treating wastewater, it is characterised in that comprise the following steps：
Step 1：Biochemical denitrification and biological activated carbon processing；
Sewage enters the AA/O oxidation ditches after pretreatment facility processing, and sewage passes through anaerobism, anoxic, aerobic three rank respectively
Duan Jinhang biochemical degradations；The AA/O oxidation ditches water outlet sends into the second pond and carries out separation of solid and liquid；
A charcoal slurry part for second pond is back in the Aerobic Pond of AA/O oxidation ditches by conduit forms BAC process, changes
The biochemical action of kind sludge；Charcoal slurry in Aerobic Pond is back to by a conduit part in the anoxic pond of AA/O oxidation ditches；
Step 2：Powdered Activated Carbon advanced treating；
The water outlet of AA/O oxidation ditches enters the charcoal water premixing pond of Powdered Activated Carbon submerged ultrafiltration reactor, and from powder activity
The charcoal slurry of backflow in charcoal submerged ultrafiltration reactor is mixed, and charcoal water mixed liquid passes through Powdered Activated Carbon submerged ultrafiltration
Reactor filtration, purification, further removes ammonia nitrogen, degraded COD, discharge purified water；Charcoal slurry is partly refluxed to Aerobic Pond and charcoal water premix
Close pond.
8. the method for deeply treating wastewater according to claim 7, it is characterised in that：In step 1, Aerobic Pond is back to scarce
The charcoal slurry reflux ratio in oxygen pond is 150%~200%, and the charcoal slurry reflux ratio that second pond is back to Aerobic Pond is 80%~100%, is mixed
It is 4500~6500mg/L to close liquid sludge concentration MLSS, and sludge age is 15~20d；The dissolved oxygen DO of the anoxic pond of AA/O oxidation ditches
Concentration control is controlled in 0.2~2.0mg/L in the dissolved oxygen DO concentration less than 0.6mg/L, the Aerobic Pond of AA/O oxidation ditches.
9. the method for deeply treating wastewater according to claim 7, it is characterised in that：In step 2, Powdered Activated Carbon is added
The amount for the Powdered Activated Carbon that device is added into Powdered Activated Carbon submerged ultrafiltration reactor is 50~500mg/L, is made into
Charcoal slurry concentration is 5%；Aerobic Pond is back to out of Powdered Activated Carbon submerged ultrafiltration reactor and charcoal water is pre-mixed the charcoal in pond
It is 30%~100%, 100%~150% respectively to starch reflux ratio.
10. the method for the deeply treating wastewater according to claim 7-9 any one, it is characterised in that：Methods described is also
Including Treatment of Sludge；The useless charcoal in useless charcoal slurry, AA/O oxidation ditches in Powdered Activated Carbon submerged ultrafiltration reactor is starched and raw
Change sludge, useless charcoal slurry and biochemical sludge in second pond, periodically by discharge of pipes to sludge concentration tank, dehydration post processing.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107902852A (en) * | 2017-12-27 | 2018-04-13 | 沧州绿源水处理有限公司 | One kind improves biochemical and immersion hyperfiltration treatment sewage technique using Powdered Activated Carbon |
| CN111517465A (en) * | 2020-04-30 | 2020-08-11 | 南京柯若环境技术有限公司 | Advanced treatment integrated equipment and treatment method for aged leachate |
| CN114506970A (en) * | 2022-01-24 | 2022-05-17 | 天津市政工程设计研究总院有限公司 | System and method for cooperatively treating sewage and sludge by using powdered activated carbon |
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| CN114506970B (en) * | 2022-01-24 | 2023-09-19 | 天津市政工程设计研究总院有限公司 | System and method for cooperatively treating sewage and sludge by using powdered activated carbon |
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