CN106045232A - Culture sewage treatment method and system - Google Patents
Culture sewage treatment method and system Download PDFInfo
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- CN106045232A CN106045232A CN201610635238.0A CN201610635238A CN106045232A CN 106045232 A CN106045232 A CN 106045232A CN 201610635238 A CN201610635238 A CN 201610635238A CN 106045232 A CN106045232 A CN 106045232A
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- sewage
- water
- tank
- low
- oxygen aeration
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- 239000010865 sewage Substances 0.000 title claims abstract description 111
- 238000000034 method Methods 0.000 title claims abstract description 78
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 116
- 239000001301 oxygen Substances 0.000 claims abstract description 68
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 68
- 238000006243 chemical reaction Methods 0.000 claims abstract description 64
- 238000000926 separation method Methods 0.000 claims abstract description 43
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 31
- 231100000719 pollutant Toxicity 0.000 claims abstract description 31
- KVUYSIIZYQUVMT-UHFFFAOYSA-N 1,2-diisothiocyanatoethane Chemical compound S=C=NCCN=C=S KVUYSIIZYQUVMT-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000005345 coagulation Methods 0.000 claims abstract description 8
- 230000015271 coagulation Effects 0.000 claims abstract description 8
- 238000005273 aeration Methods 0.000 claims description 63
- 239000002351 wastewater Substances 0.000 claims description 49
- 239000010802 sludge Substances 0.000 claims description 42
- 238000009360 aquaculture Methods 0.000 claims description 41
- 244000144974 aquaculture Species 0.000 claims description 41
- 238000001556 precipitation Methods 0.000 claims description 40
- 238000004062 sedimentation Methods 0.000 claims description 37
- 239000007788 liquid Substances 0.000 claims description 36
- 230000001112 coagulating effect Effects 0.000 claims description 35
- 238000005188 flotation Methods 0.000 claims description 32
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 24
- 230000001105 regulatory effect Effects 0.000 claims description 23
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 19
- 206010021143 Hypoxia Diseases 0.000 claims description 18
- 230000007954 hypoxia Effects 0.000 claims description 18
- 244000005700 microbiome Species 0.000 claims description 18
- 239000007787 solid Substances 0.000 claims description 18
- 230000033228 biological regulation Effects 0.000 claims description 15
- 238000003672 processing method Methods 0.000 claims description 15
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 13
- 239000002893 slag Substances 0.000 claims description 13
- 239000001117 sulphuric acid Substances 0.000 claims description 13
- 235000011149 sulphuric acid Nutrition 0.000 claims description 13
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 12
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 11
- 239000000701 coagulant Substances 0.000 claims description 11
- 235000003891 ferrous sulphate Nutrition 0.000 claims description 11
- 239000011790 ferrous sulphate Substances 0.000 claims description 11
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 11
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 11
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 11
- 230000018044 dehydration Effects 0.000 claims description 9
- 238000006297 dehydration reaction Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 6
- 238000010992 reflux Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 4
- 239000000377 silicon dioxide Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 3
- 230000007062 hydrolysis Effects 0.000 claims description 2
- 238000006460 hydrolysis reaction Methods 0.000 claims description 2
- 230000020477 pH reduction Effects 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 6
- 230000008021 deposition Effects 0.000 abstract 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 abstract 1
- 238000000354 decomposition reaction Methods 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract 1
- 229910052757 nitrogen Inorganic materials 0.000 abstract 1
- 229920002401 polyacrylamide Polymers 0.000 description 31
- 239000000203 mixture Substances 0.000 description 13
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 5
- 239000002244 precipitate Substances 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 3
- 244000144977 poultry Species 0.000 description 3
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 210000003608 fece Anatomy 0.000 description 2
- 239000012065 filter cake Substances 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 210000002700 urine Anatomy 0.000 description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 206010054949 Metaplasia Diseases 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005842 biochemical reaction Methods 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 239000010794 food waste Substances 0.000 description 1
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 244000144972 livestock Species 0.000 description 1
- 230000015689 metaplastic ossification Effects 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000005204 segregation Methods 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- 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
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
-
- 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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
-
- 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
- C02F3/06—Aerobic processes using submerged filters
-
- 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
- C02F3/28—Anaerobic digestion processes
- C02F3/2846—Anaerobic digestion processes using upflow anaerobic sludge blanket [UASB] reactors
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
-
- 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)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention provides a culture sewage treatment method and system. The method comprises S10, pretreatment: removing insoluble pollutants in culture sewage and a part of chroma so that culture sewage pollutant biodegradability is improved, S20, EBIS technology-based biological treatment: carrying out decomposition on pollutants in the sewage treated in the step S10 through microbes in a low-oxygen state and then carrying out sludge-water separation, S30, after coagulation deposition: carrying out after coagulation deposition on the sewage treated by the step S20, and S40, Fenton reaction: carrying out a Fenton reaction process on the water treated by the step S30. The culture sewage treatment method has strong impact resistance and guarantees product water ammonia nitrogen stability and standard meeting. Through deep treatment such as after coagulation deposition and Fenton reaction on the product water after biotreatment, the discharged water is stable and satisfies the standards.
Description
Technical field
The present invention relates to sewage disposal, particularly relate to a kind of aquaculture wastewater processing method and aquaculture wastewater processing system.
Background technology
Aquaculture wastewater is livestock and poultry farm waste water, mainly includes poultry urine, remaining feces, food-residue and flushing water
Deng.Its feature is pollutant levels height, float is many, colourity is deep, ammonia-nitrogen content is high, the discharge water yield is big and concentrates, remain in a large number
Pathogen etc., belong to one of intractable waste water.
Tradition raising sewage disposal process flow process: waste water → coarse rack → preliminary sedimentation tank → regulating reservoir → UASB reactor → connect
Touch oxidation pond → coagulative precipitation tank → discharge.
Sewage first passes around grid and removes blocks of solid float, flows into preliminary sedimentation tank and removes part bulky grain float, so
After be pumped to regulating reservoir, the regulating water quality water yield, regulating reservoir water outlet, through UASB reactor, is removed part COD, colourity and improves dirt
After water biodegradability, entering contact-oxidation pool, remove dirty organic pollutants, contact-oxidation pool water outlet enters coagulating sedimentation
Pond, discharges after removing SS (fixing float, lower same), COD further.
The problem that tradition cultivating wastewater purification method exists: early stage pretreatment is not thorough, and float is higher, it is impossible to after guaranteeing
The continuous condition processing technique；UASB reactor requires height to water inlet float, lacks agitating device, and impact resistance is poor, processes effect
The most undesirable；Traditional contact oxidation technology, impact resistance is poor；Lack the advanced treating of colourity in sewage, it is difficult to ensure that row
Colority of water stably reaching standard；Lack the process to biological denitrificaion, it is impossible to ensure ammonia nitrogen stably reaching standard.
Summary of the invention
In view of drawbacks described above of the prior art or deficiency, it is desirable to provide a kind of impact resistance is strong, and can
Ensure the aquaculture wastewater processing method of draining stably reaching standard.
It is a further object of the present invention to provide a kind of impact resistance strong, and ensure that the cultivation of draining stably reaching standard is dirty
Water treatment system.
The invention provides a kind of aquaculture wastewater processing method, comprise the following steps:
S10, pretreatment: remove the insoluble pollutant in aquaculture wastewater and part colourity, improve in aquaculture wastewater and pollute
The biodegradability of thing；
S20, EBIS technique is utilized to carry out a biological disposal upon: the sewage after processing in step S10 is utilized under hypoxia
Microorganism carries out mud-water separation after decomposing pollutant therein；
S30, rear coagulating sedimentation: the sewage after processing in step S20 is carried out rear coagulating sedimentation；
S40, Fenton's reaction: the water after processing in step S30 carries out Fenton's reaction.
Optionally, in described step S10, pretreatment comprises the following steps:
S101, solid-liquid separation: aquaculture wastewater is carried out solid-liquid separation and obtains sewage and excrement slag；
S102, air-flotation process: gained sewage in step S101 is carried out sewage and scum silica frost after air-flotation process must process；
S103, regulation: be adjusted equalizing its water quality and quantity by gained sewage in step S102；
S104, anaerobic reaction: the sewage after regulation in step S103 is carried out anaerobic reaction.
Optionally, described step S10 the most also includes step S105: the water outlet after anaerobic reaction entered
The step of row precipitation.
Optionally, described step S20 utilizes EBIS technique to carry out biological treatment and specifically includes following steps:
S201, in step S10 process after sewage utilize microorganism that pollutant therein are carried out under hypoxia
Decompose；
S202, will in step S201 process after sewage under hypoxia, utilize microorganism to pollutant therein again
Decompose；
S203, will step S202 process after part of contaminated water be recycled in step S201 and enter in step S201
Carrying out step S201 again after sewage mixing after the process of step S10, the sewage after processing in step S202 enters into step S201
In amount and step S10 in process after sewage to enter into the volume ratio of amount in step S201 be 10～30；
S204, in step S203 process after part of contaminated water carry out mud-water separation, after mud-water separation produce mud portion
Divide in the sewage being back in step S201 and recycle.
Optionally, in the rear precipitation process of coagulation in described step S30, sewage adds Calx, ferric chloride and PAM
As coagulant, the addition of Calx is for making sewage PH value 8～9, and ferric chloride addition is 200～400mg/l, and PAM adds
Amount is 3～7mg/l.
Optionally, during the Fenton's reaction in described step S40, add material ferrous sulfate, hydrogen peroxide, sulphuric acid and
PAM, the addition of sulphuric acid is for making sewage pH 2～4, and ferrous sulfate addition is 100～250mg/l, and hydrogen peroxide addition is
25～60mg/l, PAM addition is 3～10mg/l.
Optionally, in described step S101 after solid-liquid separation excrement slag water content between 50wt%～60wt%；
And/or, the air-flotation process in described step S102 utilizes shallow air-floatation, adds PAC and PAM before air supporting in sewage
Coagulant, PAC addition is 450～600mg/l, and PAM addition is 20～30mg/l；
And/or, in described step S103, the regulating time in regulating step is 18～36 hours；
And/or, in described step S104, the anaerobic reaction time is 5～10 days, volatile acid concentration 1～5mol/l.
Present invention also offers a kind of aquaculture wastewater processing system, it includes sump, the solid-liquid separation dress being sequentially communicated
Put, flotation tank, regulating reservoir, anaerobic reaction device, integral biological treatment tank, rear coagulative precipitation tank and Fenton's reaction pond.
Optionally, preliminary sedimentation tank and cache pool, described preliminary sedimentation tank it are additionally provided with between described equipment for separating liquid from solid and flotation tank
Water inlet end connect with equipment for separating liquid from solid, the water inlet end of described cache pool is connected with the water side of preliminary sedimentation tank, described cache pool
Water side connect with flotation tank；
And/or, be additionally provided with anaerobic precipitation pond between described anaerobic reaction device and integral biological treatment tank, described in detest
The water inlet end in oxygen precipitation pond connects with anaerobic reaction device water side, at the water side in described anaerobic precipitation pond and integral biological
The water inlet end connection of reason pond；
And/or, it is provided with agitating device in described regulating reservoir；
And/or, described integral biological treatment tank includes the first low-oxygen aeration district, the second low-oxygen aeration being wholely set
District, air plug-flow district and settling zone；Described first low-oxygen aeration district and the second low-oxygen aeration district are disposed adjacent and have shared
Midfeather, one end of described midfeather is provided with and connects the of described first low-oxygen aeration district and the second low-oxygen aeration district
One flow channels, the other end has the second flow channels connecting described second low-oxygen aeration district with described air plug-flow district；Institute
State air plug-flow district and be arranged at the one end in described first low-oxygen aeration district, and can be mixed by what the second low-oxygen aeration district refluxed
Closing in liquid plug-flow extremely described first low-oxygen aeration district, described first low-oxygen aeration district also has wastewater inlet；Described settling zone with
Described second low-oxygen aeration district is disposed adjacent, and has shared partition wall, and this partition wall has connection settling zone and described the
3rd flow channels in two low-oxygen aeration districts, is additionally provided with sludge reflux and leads between described settling zone and the first low-oxygen aeration district
Road, described settling zone is provided with separation water collecting groove, and the outlet of described separation water collecting groove enters with rear coagulative precipitation tank
The mouth of a river connects；
And/or, it is provided with agitating device in described regulating reservoir；
And/or, it is provided with agitating device in described hydrolysis acidification pool.
Optionally, sludge concentration tank and dehydration pond are also included；
The water inlet end of described sludge concentration tank respectively with integral biological treatment tank, rear coagulative precipitation tank, Fenton's reaction pond,
Flotation tank, anaerobic precipitation pond and preliminary sedimentation tank connection；
Described dehydration pond connects with sludge concentration tank.
The aquaculture wastewater processing method of the present invention has been abandoned catalytic oxidation of the prior art and has been processed and utilize UASB to react
The step that device processes, and use EBIS technique to carry out carrying out a biological disposal upon under hypoxia and utilize microorganism that pollutant therein are entered
Row decomposes, and has anti-impact force strong, and ensure that the advantage of water outlet ammonia nitrogen stably reaching standard, further, since in biological treatment
Afterwards water outlet is carried out the depths reasons such as rear coagulating sedimentation and Fenton's reaction, it is possible to ensure draining stably reaching standard.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to
Other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the process flow diagram of aquaculture wastewater processing method in the specific embodiment of the invention；
Fig. 2 is the structured flowchart of aquaculture wastewater processing system in the embodiment of the present invention 1；
Fig. 3 is the structural representation of the integral biological treatment tank in the embodiment of the present invention 1.
In figure, labelling is illustrated as:
1-sump；
2-equipment for separating liquid from solid；
3-flotation tank；
4-regulating reservoir；
5-anaerobic reaction device；
6-integral biological treatment tank；
Coagulative precipitation tank after 7-；
8-Fenton's reaction pond；
9-preliminary sedimentation tank；
10-cache pool；
11-anaerobic precipitation pond；
12-sludge concentration tank；
13-is dehydrated pond；
401-the first low-oxygen aeration district；
402-the second low-oxygen aeration district；
403-air plug-flow district；
404-settling zone；
405-the first flow channels；
406-the second flow channels；
407-wastewater inlet；
408-the 3rd flow channels；
409-sludge reflux passage；
410-excess sludge discharge passage；
411-separates water collecting groove.
Detailed description of the invention
With embodiment, the application is described in further detail below in conjunction with the accompanying drawings.It is understood that this place is retouched
The specific embodiment stated is used only for explaining related invention, rather than the restriction to this invention.It also should be noted that, in order to
It is easy to describe, accompanying drawing illustrate only and invent relevant part.
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can phases
Combination mutually.Describe the application below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
See Fig. 1, the invention provides a kind of aquaculture wastewater processing method, comprise the following steps:
S10, pretreatment: remove the insoluble pollutant in aquaculture wastewater and part colourity, improve in aquaculture wastewater and pollute
The biodegradability of thing；
S20, EBIS technique is utilized to carry out a biological disposal upon: the sewage after processing in step S10 is utilized under hypoxia
Microorganism carries out mud-water separation after decomposing pollutant therein；
S30, rear coagulating sedimentation: the sewage after processing in step S20 is carried out rear coagulating sedimentation；
S40, Fenton's reaction: the water after processing in step S30 carries out Fenton's reaction.
Above-mentioned aquaculture wastewater processing method has been abandoned catalytic oxidation of the prior art and has been processed and utilize UASB reactor
The step processed, and use EBIS technique to carry out carrying out a biological disposal upon under hypoxia and utilize microorganism that pollutant therein are carried out
Decompose, there is anti-impact force strong, and ensure that the advantage of water outlet ammonia nitrogen stably reaching standard, further, since after biological treatment
Water outlet is carried out the depths reasons such as rear coagulating sedimentation and Fenton's reaction, it is possible to ensure draining stably reaching standard
In the present embodiment, further, optionally, in described step S10, pretreatment comprises the following steps:
S101, solid-liquid separation: aquaculture wastewater is carried out solid-liquid separation and obtains sewage and excrement slag；
S102, air-flotation process: gained sewage in step S101 is carried out sewage and scum silica frost after air-flotation process must process；
S103, regulation: be adjusted equalizing its water quality and quantity by gained sewage in step S102, it is therefore an objective to uneven
After the dyeing and printing sewage of discharge is collected, mix homogeneously in regulating reservoir, to equalize the indices such as COD in sewage, PH, colourity；
S104, anaerobic reaction: the sewage after regulation in step S103 is carried out anaerobic reaction.
It addition, optional, described step S10 is the most also included step S105: after anaerobic reaction
Water outlet carries out the step precipitated, and to remove part anaerobic sludge, is more beneficial for the carrying out of subsequent step.
Further, optionally, described step S20 utilize EBIS (integral biological process technique) technique to carry out biology
Process specifically includes following steps:
S201, in step S10 process after sewage utilize microorganism that pollutant therein are carried out under hypoxia
Decompose；
S202, will in step S201 process after sewage under hypoxia, utilize microorganism to pollutant therein again
Decompose；
S203, will step S202 process after part of contaminated water be recycled in step S201 and enter in step S201
Carrying out step S201 again after sewage mixing after the process of step S10, the sewage after processing in step S202 enters into step S201
In amount and step S10 in process after sewage to enter into the volume ratio of amount in step S201 be 10～30, in order in step
S201 has higher microorganism concn, makes the more abundant of biochemical reaction, improve the resolution ratio of pollutant.
S204, in step S203 process after part of contaminated water carry out mud-water separation, after mud-water separation produce mud portion
Divide in the sewage being back in step S201 and recycle.
In the present embodiment, optionally, in the rear precipitation process of coagulation in described step S30, in sewage add Calx, three
Iron chloride and PAM (Poly acrylamide, poly-third big gun acrylamide, lower with) as coagulant, the addition of Calx is for making sewage
PH value 8～9, ferric chloride addition is 200～400mg/l, and PAM addition is 3～7mg/l, in order to make in sewage is insoluble
Thing flocculates greatly, convenient removal, is simultaneously also beneficial to remove colourity in sewage to a greater degree.
It addition, optional, during the Fenton's reaction in described step S40, add material ferrous sulfate, hydrogen peroxide,
Sulphuric acid and PAM, the addition of sulphuric acid is for making sewage pH 2～4, and ferrous sulfate addition is 100～250mg/l, and hydrogen peroxide adds
Entering amount is 25～60mg/l, and PAM addition is 3～10mg/l, so that Fenton's reaction is carried out more fully.
Additionally, optional, in described step S101 after solid-liquid separation excrement slag water content at 50wt%～60wt% (wt, weight
Amount percent) between.
Optionally, the air-flotation process in described step S102 utilizes shallow air-floatation, before air supporting in sewage add PAC and
PAM coagulant, PAC (Polyaluminium Chloride, aluminium polychlorid, lower with) addition is 450～600mg/l, PAM
Addition is 20～30mg/l, with indexs such as the pollutant load in reduction sewage further, SS, colourities, makes the water after process
Reach discharge standard.
It addition, in the present embodiment, optionally, in described step S103, the regulating time in regulating step is 18～36 little
Time, in order to make the water quality and quantity of sewage more equalize.
During regulation, sewage can be stirred, to improve regulation efficiency.
In the present embodiment, in described step S104, the anaerobic reaction time is preferably 5～10 days, volatile acid concentration preferably 1～
5mol/l, in order to carry out anaerobic reaction more fully, makes the pollutant in sewage decompose greatly.
In the present embodiment, the step of dirt collection can also be included before solid-liquid separation, will poultry urine, remaining feces, raise
Material residue and flushing water etc. are brought together.
In the present embodiment, it is also possible to sink at the beginning of arranging between the solid-liquid separation of step S101 and the air-flotation process of step S102
Step, in order to the solid pollutant in the sewage obtained after solid-liquid separation carries out preliminary precipitate and separate.
It addition, more enter, in the just heavy step that can also arrange buffering between step and step S102 air-flotation process, with
Just collect enough sewage and carry out air-flotation process, improve pneumatically supported treating capacity.
Additionally, in the present embodiment, also including the step of sludge condensation, this step is particularly as follows: process integral biological
Materialized mud, air-flotation process that the materialized mud of the excess sludge after backflow, rear coagulating sedimentation generation, Fenton's reaction produce produce
Scum silica frost, just heavy in the anaerobic sludge that produces in the mud step S105 settling step that produces concentrate after carry out sludge condensation, dense
Being dehydrated after contracting, plant equipment can be used to be dehydrated, the filtrate produced after dehydration returns dirt collection step or solid-liquid separation
Processing in step, filter cake is sent outside, to solve the recycling problem of the mud produced.
Embodiment 1
See Fig. 2, present embodiments provide a kind of aquaculture wastewater processing system, including the sump 1 being sequentially communicated, solid-liquid
Segregation apparatus 2, flotation tank 3, regulating reservoir 4, anaerobic reaction device 5, integral biological treatment tank 6, rear coagulative precipitation tank 7 and Fenton
Reaction tank 8.
Above-mentioned aquaculture wastewater processing system has been abandoned catalytic oxidation of the prior art and has been processed and utilize UASB reactor
The method processed, and use integral biological treatment tank to utilize microorganism that pollutant therein and ammonia nitrogen are entered under hypoxia
Row decomposes, and has anti-impact force strong, and ensure that the advantage of water outlet ammonia nitrogen stably reaching standard, further, since in one metaplasia
Thing is provided with rear coagulative precipitation tank 7 and Fenton's reaction pond 8 after processing pond, water outlet can be carried out rear coagulating sedimentation and Fenton's reaction
Manage Deng depths, it is possible to ensure draining stably reaching standard.
In the present embodiment, optionally, preliminary sedimentation tank 9 and caching it are additionally provided with between described equipment for separating liquid from solid 2 and flotation tank 3
Pond 10, the water inlet end of described preliminary sedimentation tank 9 connects with equipment for separating liquid from solid 2, and the water inlet end of described cache pool 10 goes out with preliminary sedimentation tank 9
Water end (W.E.) connects, and the water side of described cache pool 10 connects with flotation tank 3.By described preliminary sedimentation tank 9 can be to solid-liquid separation after
Solid pollutant in the sewage obtained carries out preliminary precipitate and separate.The purpose arranging cache pool 10 is to collect enough dirts
Water carries out air-flotation process, improves pneumatically supported treating capacity.
It addition, optional, it is additionally provided with anaerobic precipitation between described anaerobic reaction device 5 and integral biological treatment tank 6
Pond 11, the water inlet end in described anaerobic precipitation pond 11 connects with anaerobic reaction device 5 water side, the water outlet in described anaerobic precipitation pond 11
End connects with integral biological treatment tank 6 water inlet end；The purpose arranging described anaerobic precipitation pond 11 is to remove partial sludge, more has
It is beneficial to the carrying out of subsequent step.
Additionally, in the present embodiment, it is also possible to it is provided with agitating device in described regulating reservoir 4, to improve the dirt in regulating reservoir 4
Water regulation efficiency.
It addition, see Fig. 3, the first low-oxygen aeration district 401 that described integral biological treatment tank 4 includes being wholely set,
Two low-oxygen aeration districts 402, air plug-flow district 403 and settling zone 404；
Described first low-oxygen aeration district 401 and the second low-oxygen aeration district 402 are disposed adjacent and have shared middle interval
Wall, one end of described midfeather is provided with the described first low-oxygen aeration district 401 and the first of the second low-oxygen aeration district 402 of connection
Flow channels 405, the other end has the described second low-oxygen aeration district 402 of connection and crosses stream with the second of described air plug-flow district 403
Passage 406；
Described air plug-flow district 403 is arranged at the one end in described first low-oxygen aeration district 401, and can be by the second hypoxia
In aeration zone 402 in the mixed liquor plug-flow of backflow extremely described first low-oxygen aeration district 401, state the first low-oxygen aeration district 401 and also have
There is wastewater inlet 407；
Described settling zone 404 is disposed adjacent with described second low-oxygen aeration district 402, and has shared partition wall, should be every
There is on wall the 3rd flow channels 408 of connection settling zone 404 and described second low-oxygen aeration district 402, described settling zone 404 with
It is additionally provided with sludge reflux passage 409 between first low-oxygen aeration district 401, described settling zone 404 is provided with separation water and collects
Groove 411, the outlet of described separation water collecting groove 411 is connected with the water inlet of rear coagulative precipitation tank 7, isolated to collect
Water, described separation water collecting groove 411 is connected with the water inlet of described rear coagulative precipitation tank 7, so that separation water is delivered to rear coagulation
Sedimentation tank 7 carries out rear coagulating sedimentation.
It is capable of the integral biological to sewage by described integral biological treatment tank 6 to process, not only at saving
The floor space of reason system, and sewage can be made to have bigger nitrate recirculation ratio, improve sludge concentration, and then improve reaction effect
Rate, to decomposing greatly at machine thing and ammonia nitrogen in sewage.
Described low-oxygen aeration district volumetric loading is preferably 1.0～1.5kgCOD/m3.d。
It addition, described settling zone preferably employs the form of tube settler, surface loading is preferably 1.0～1.5m3/㎡
.h。
In another optional embodiment of the present embodiment, described aquaculture wastewater processing system also includes sludge concentration tank 12
With dehydration pond 13；
The water inlet end of described sludge concentration tank 12 is anti-with integral biological treatment tank 6, rear coagulative precipitation tank 7, Fenton respectively
Pond 8, flotation tank 3, anaerobic precipitation pond 11 and preliminary sedimentation tank 9 is answered to connect；
Described dehydration pond 13 connects with sludge concentration tank 12.
By described sludge concentration tank 12, excess sludge, the rear coagulative precipitation tank 7 of integral biological treatment tank 6 can be produced
It is floating that the materialized mud of life, the materialized mud of Fenton's reaction pond 8 generation and the mud of preliminary sedimentation tank 9 initial gross separation, flotation tank 3 produce
The anaerobic sludge that slag, anaerobic precipitation pond 11 produce concentrates, and is then dehydrated by dehydration pond 13, the filter produced after dehydration
Liquid returns in sump 1 or processes in equipment for separating liquid from solid 2, and filter cake is sent outside, to solve the recycling of the mud produced
Problem.
When specifically arranging, the sludge reflux passage 409 of integral biological treatment tank 6 is additionally provided with excess sludge discharge and leads to
Road 410, the excess sludge discharge passage 410 of described integral biological treatment tank 6 is with described sludge concentration tank 12 by pipeline even
Logical.To be delivered in sludge concentration tank 12 process by excess sludge discharge passage 410 by excess sludge.
Embodiment 2
Aquaculture wastewater is processed according to the following steps:
In a201, general's cultivation sewage collecting to sump；
A202, by step a201 collect aquaculture wastewater be delivered in equipment for separating liquid from solid utilize equipment for separating liquid from solid to enter
Row solid-liquid separation obtains sewage and excrement slag, and excrement slag water content is 50wt%；
A203, by the sewage transport that obtains in step a202 to flotation tank, add PAC and PAM coagulant, PAC adds
Amount is 20mg/l for 500mg/l, PAM addition, utilizes shallow air-floatation to carry out air-flotation process；
A204, will step a203 process after sewage transport to the water quality water stopping 20 hours regulation sewage in regulating reservoir
Amount, regulation limit, limit is stirred；
A205, will in step a204 process after sewage transport to anaerobic reaction device, carry out anaerobic reaction, during reaction
Between be 7 days, volatile acid concentration 3mol/l；
A206, will in step a205 process after sewage transport precipitate to anaerobic precipitation pond, removing unit fractional precipitation
Thing；
A207, will step a206 process after sewage transport to the first low-oxygen aeration district of integral biological treatment tank
In, mix (to enter with by air plug-flow district mud mixture from the second low-oxygen aeration district plug-flow to the first low-oxygen aeration district
Enter the sewage to air plug-flow district and the volume ratio from the mud mixture of the second low-oxygen aeration district backflow be 20), at dissolved oxygen
Concentration 0.5mg/l, utilizes microorganism to decompose pollutant therein, then mud mixture under the conditions of sludge concentration 6g/l
Enter in the second low-oxygen aeration district at dissolved oxygen concentration 0.5mg/l, under the conditions of sludge concentration 6g/l, utilize microorganism to wherein
Pollutant again carry out exploded rear and divide and be back in air plug-flow district, and enter the first hypoxia by air plug-flow district plug-flow and expose
In gas district, enter partly into settling zone and carry out mud-water separation and obtain separating water and mud, partial sludge is back to the first hypoxia
In aeration zone；
A208, the separation water obtained in step a207 is delivered in rear coagulative precipitation tank carry out rear coagulating sedimentation, point
In water, addition Calx, ferric chloride and PAM are as coagulant, and the addition of Calx is for making sewage PH value 8, and ferric chloride adds
Amount is 10mg/l for 300mg/l, PAM addition；
A209, by step a208 through after water after coagulating sedimentation be delivered in Fenton's reaction pond carry out Fenton's reaction,
During Fenton's reaction, add material ferrous sulfate, hydrogen peroxide, sulphuric acid and PAM, the addition of sulphuric acid for making sewage pH 3,
Ferrous sulfate addition is 100mg/l, hydrogen peroxide addition be 25mg/l, PAM addition be 3mg/l.
Embodiment 3
Aquaculture wastewater is processed according to the following steps:
In a301, general's cultivation sewage collecting to sump；
A302, by step a301 collect aquaculture wastewater be delivered in equipment for separating liquid from solid utilize equipment for separating liquid from solid to enter
Row solid-liquid separation obtains sewage and excrement slag, and excrement slag water content is 55wt%；
A303, by the sewage transport that obtains in step a302 to flotation tank, add PAC and PAM coagulant, PAC adds
Amount is 25mg/l for 550mg/l, PAM addition, utilizes shallow air-floatation to carry out air-flotation process；
A304, will step a303 process after sewage transport to the water quality water stopping 18 hours regulation sewage in regulating reservoir
Amount, regulation limit, limit is stirred；
A305, will in step a304 process after sewage transport to anaerobic reaction device, carry out anaerobic reaction, during reaction
Between be 5 days, volatile acid concentration 1mol/l；
A306, will in step a305 process after sewage transport precipitate to anaerobic precipitation pond, removing unit fractional precipitation
Thing；
A307, will step a306 process after sewage transport to the first low-oxygen aeration district of integral biological treatment tank
In, mix (to enter with by air plug-flow district mud mixture from the second low-oxygen aeration district plug-flow to the first low-oxygen aeration district
Enter the sewage to air plug-flow district and the mud mixture volume ratio from the backflow of the second low-oxygen aeration district be 10), dense at dissolved oxygen
Degree 0.3mg/l, utilizes microorganism to decompose pollutant therein under the conditions of sludge concentration 5g/l, then mud mixture enters
Enter in the second low-oxygen aeration district at dissolved oxygen concentration 0.3mg/l, under the conditions of sludge concentration 5g/l, utilize microorganism to therein
Pollutant again carry out exploded rear and divide and be back in air plug-flow district, and enter the first low-oxygen aeration by air plug-flow district plug-flow
Qu Zhong, enters partly into settling zone and carries out mud-water separation and obtain separating water and mud, partial sludge is back to the first hypoxia and exposes
In gas district；
A308, the separation water obtained in step a307 is delivered in rear coagulative precipitation tank carry out rear coagulating sedimentation, point
In water, addition Calx, ferric chloride and PAM are as coagulant, and the addition of Calx is for making sewage PH value 9, and ferric chloride adds
Amount is 7mg/l for 200mg/l, PAM addition；
A309, by step a308 through after water after coagulating sedimentation be delivered in Fenton's reaction pond carry out Fenton's reaction,
During Fenton's reaction, add material ferrous sulfate, hydrogen peroxide, sulphuric acid and PAM, the addition of sulphuric acid for making sewage pH 3,
Ferrous sulfate addition is 150mg/l, hydrogen peroxide addition be 40mg/l, PAM addition be 5mg/l.
Embodiment 4
Aquaculture wastewater is processed according to the following steps:
In a401, general's cultivation sewage collecting to sump；
A402, by step a401 collect aquaculture wastewater be delivered in equipment for separating liquid from solid utilize equipment for separating liquid from solid to enter
Row solid-liquid separation obtains sewage and excrement slag, and excrement slag water content is 60wt%；
A403, the sewage obtained in step a402 is carried out in preliminary sedimentation tank just heavy after the most heavy after sewage, after just sinking
Sewage transport, in flotation tank, adds PAC and PAM coagulant, PAC addition be 600mg/l, PAM addition be 30mg/l, profit
Air-flotation process is carried out with shallow air-floatation；
A404, will step a 403 process after sewage transport to the water quality stopping 36 hours regulation sewage in regulating reservoir
The water yield, regulation limit, limit is stirred；
A405, will in step a404 process after sewage transport to anaerobic reaction device, carry out anaerobic reaction, during reaction
Between be 10 days, volatile acid concentration 5mol/l；
A406, will in step a405 process after sewage transport precipitate to anaerobic precipitation pond, removing unit fractional precipitation
Thing；
A407, will step a406 process after sewage transport to the first low-oxygen aeration district of integral biological treatment tank
In, mix (to enter with by air plug-flow district mud mixture from the second low-oxygen aeration district plug-flow to the first low-oxygen aeration district
Enter the sewage to air plug-flow district and the mud mixture volume ratio from the backflow of the second low-oxygen aeration district be 30), dense at dissolved oxygen
Degree 0.8mg/l, utilizes microorganism to decompose pollutant therein under the conditions of sludge concentration 8g/l, then mud mixture enters
Enter in the second low-oxygen aeration district at dissolved oxygen concentration 0.8mg/l, under the conditions of sludge concentration 8g/l, utilize microorganism to therein
Pollutant again carry out exploded rear and divide and be back in air plug-flow district, and enter the first low-oxygen aeration by air plug-flow district plug-flow
Qu Zhong, enters partly into settling zone and carries out mud-water separation and obtain separating water and mud, partial sludge is back to the first hypoxia and exposes
In gas district；
A408, the separation water obtained in step a407 is delivered in rear coagulative precipitation tank carry out rear coagulating sedimentation, point
In water, addition Calx, ferric chloride and PAM are as coagulant, and the addition of Calx is for making sewage PH value 9, and ferric chloride adds
Amount is 5mg/l for 400mg/l, PAM addition；
A409, by step a408 through after water after coagulating sedimentation be delivered in Fenton's reaction pond carry out Fenton's reaction,
During Fenton's reaction, add material ferrous sulfate, hydrogen peroxide, sulphuric acid and PAM, the addition of sulphuric acid for making sewage pH 4,
Ferrous sulfate addition is 250mg/l, hydrogen peroxide addition be 60mg/l, PAM addition be 10mg/l.
Table 1
Above description is only the preferred embodiment of the application and the explanation to institute's application technology principle.People in the art
Member should be appreciated that invention scope involved in the application, however it is not limited to the technology of the particular combination of above-mentioned technical characteristic
Scheme, also should contain in the case of without departing from described inventive concept simultaneously, above-mentioned technical characteristic or its equivalent feature carry out
Combination in any and other technical scheme of being formed.Such as features described above has similar merit with (but not limited to) disclosed herein
The technical scheme that the technical characteristic of energy is replaced mutually and formed.
Claims (10)
1. an aquaculture wastewater processing method, it is characterised in that comprise the following steps:
S10, pretreatment: remove the insoluble pollutant in aquaculture wastewater and part colourity, improve pollutant in aquaculture wastewater
Biodegradability；
S20, EBIS technique is utilized to carry out a biological disposal upon: the sewage after processing in step S10 is utilized under hypoxia micro-life
Thing carries out mud-water separation after decomposing pollutant therein；
S30, rear coagulating sedimentation: the sewage after processing in step S20 is carried out rear coagulating sedimentation；
S40, Fenton's reaction: the water after processing in step S30 carries out Fenton's reaction.
Aquaculture wastewater processing method the most according to claim 1, it is characterised in that in described step S10, pretreatment is concrete
Comprise the following steps:
S101, solid-liquid separation: aquaculture wastewater is carried out solid-liquid separation and obtains sewage and excrement slag；
S102, air-flotation process: gained sewage in step S101 is carried out sewage and scum silica frost after air-flotation process must process；
S103, regulation: be adjusted equalizing its water quality and quantity by gained sewage in step S102；
S104, anaerobic reaction: the sewage after regulation in step S103 is carried out anaerobic reaction.
Aquaculture wastewater processing method the most according to claim 2, it is characterised in that in step S104 in described step S10
The most also include step S105: the water outlet after anaerobic reaction is carried out the step precipitated.
Aquaculture wastewater processing method the most according to claim 1, it is characterised in that utilize EBIS work in described step S20
Skill carries out biological treatment and specifically includes following steps:
S201, in step S10 process after sewage utilize microorganism that pollutant therein are decomposed under hypoxia；
S202, will in step S201 process after sewage utilize microorganism that pollutant therein are carried out again under hypoxia
Decompose；
S203, will step S202 process after part of contaminated water be recycled in step S201 and the step that enters in step S201
Carrying out step S201 again after sewage mixing after S10 process, the sewage after processing in step S202 enters in step S201
It is 10～30 that sewage after processing in amount and step S10 enters into the volume ratio of amount in step S201；
S204, in step S203 process after part of contaminated water carry out mud-water separation, after mud-water separation produce sludge part return
It flow in the sewage in step S201 recycle.
Aquaculture wastewater processing method the most according to claim 1, it is characterised in that the rear coagulation in described step S30 sinks
During shallow lake, sewage adds Calx, ferric chloride and PAM as coagulant, the addition of Calx for make sewage PH value 8～
9, ferric chloride addition is 200～400mg/l, and PAM addition is 3～7g/l.
Aquaculture wastewater processing method the most according to claim 1, it is characterised in that the Fenton's reaction in described step S40
During, adding material ferrous sulfate, hydrogen peroxide, sulphuric acid and PAM, the addition of sulphuric acid is for making sewage pH 2～4, and sulphuric acid is sub-
Ferrum addition is 100～250mg/l, and hydrogen peroxide addition is 25～60mg/l, and PAM addition is 3～10g/l.
Aquaculture wastewater processing method the most according to claim 2, it is characterised in that in described step S101 after solid-liquid separation
Excrement slag water content is between 50wt%～60wt%；
And/or, the air-flotation process in described step S102 utilizes shallow air-floatation, adds PAC and PAM coagulation before air supporting in sewage
Agent, PAC addition is 450～600mg/l, and PAM addition is 20～30mg/l；
And/or, in described step S103, the regulating time in regulating step is 18～36 hours；
And/or, in described step S104, the anaerobic reaction time is 5～10 days, volatile acid concentration 1～5mol/l.
8. an aquaculture wastewater processing system, it is characterised in that the sump that includes being sequentially communicated, equipment for separating liquid from solid, air supporting
Pond, regulating reservoir, anaerobic reaction device, integral biological treatment tank, rear coagulative precipitation tank and Fenton's reaction pond.
Aquaculture wastewater processing system the most according to claim 8, it is characterised in that described equipment for separating liquid from solid and flotation tank
Between be additionally provided with preliminary sedimentation tank and cache pool, the water inlet end of described preliminary sedimentation tank connects with equipment for separating liquid from solid, described cache pool
Water inlet end is connected with the water side of preliminary sedimentation tank, and the water side of described cache pool connects with flotation tank；
And/or, it being additionally provided with anaerobic precipitation pond between described anaerobic reaction device and integral biological treatment tank, described anaerobism is sunk
The water inlet end in pond, shallow lake connects with anaerobic reaction device water side, the water side in described anaerobic precipitation pond and integral biological treatment tank
Water inlet end connects；
And/or, it is provided with agitating device in described regulating reservoir；
And/or, the first low-oxygen aeration district that described integral biological treatment tank includes being wholely set, the second low-oxygen aeration district, sky
Gas plug-flow district and settling zone；Described first low-oxygen aeration district and the second low-oxygen aeration district are disposed adjacent and have shared centre
Partition wall, one end of described midfeather is provided with the first mistake stream connecting described first low-oxygen aeration district and the second low-oxygen aeration district
Passage, the other end has the second flow channels connecting described second low-oxygen aeration district with described air plug-flow district；Described air
Plug-flow district is arranged at the one end in described first low-oxygen aeration district, and can be pushed away by the mixed liquor of backflow in the second low-oxygen aeration district
Flowing in described first low-oxygen aeration district, described first low-oxygen aeration district also has wastewater inlet；Described settling zone and described the
Two low-oxygen aeration districts are disposed adjacent, and have shared partition wall, and this partition wall has connection settling zone and described second hypoxia
3rd flow channels of aeration zone, is additionally provided with sludge reflux passage between described settling zone and the first low-oxygen aeration district, described
Being provided with separation water collecting groove on settling zone, the outlet of described separation water collecting groove connects with the water inlet of rear coagulative precipitation tank
Connect；
And/or, it is provided with agitating device in described regulating reservoir；
And/or, it is provided with agitating device in described hydrolysis acidification pool.
Aquaculture wastewater processing system the most according to claim 9, it is characterised in that also include sludge concentration tank and dehydration
Pond；
The water inlet end of described sludge concentration tank respectively with integral biological treatment tank, rear coagulative precipitation tank, Fenton's reaction pond, air supporting
Pond, anaerobic precipitation pond and preliminary sedimentation tank connection；
Described dehydration pond connects with sludge concentration tank.
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| CN115557607B (en) * | 2022-08-31 | 2024-02-23 | 达斯玛环境科技（北京）有限公司 | Integrated biological reaction tank system and method |
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Application publication date: 20161026 |