CN109293138A - A kind of aquaculture wastewater purifying treatment method - Google Patents
A kind of aquaculture wastewater purifying treatment method Download PDFInfo
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- CN109293138A CN109293138A CN201811168491.5A CN201811168491A CN109293138A CN 109293138 A CN109293138 A CN 109293138A CN 201811168491 A CN201811168491 A CN 201811168491A CN 109293138 A CN109293138 A CN 109293138A
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- treatment
- sewage
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- flocculant
- aquaculture wastewater
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- 239000002351 wastewater Substances 0.000 title claims abstract description 32
- 238000009360 aquaculture Methods 0.000 title claims abstract description 28
- 244000144974 aquaculture Species 0.000 title claims abstract description 28
- 239000010865 sewage Substances 0.000 claims abstract description 55
- 238000000034 method Methods 0.000 claims abstract description 43
- 244000005700 microbiome Species 0.000 claims abstract description 39
- 230000000694 effects Effects 0.000 claims abstract description 26
- 230000020477 pH reduction Effects 0.000 claims abstract description 25
- 229920001308 poly(aminoacid) Polymers 0.000 claims abstract description 21
- 238000002360 preparation method Methods 0.000 claims abstract description 19
- 238000004062 sedimentation Methods 0.000 claims abstract description 19
- 238000000926 separation method Methods 0.000 claims abstract description 19
- 239000007787 solid Substances 0.000 claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 15
- 150000004676 glycans Polymers 0.000 claims abstract description 14
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- 239000005017 polysaccharide Substances 0.000 claims abstract description 14
- 150000004804 polysaccharides Polymers 0.000 claims abstract description 14
- 238000001556 precipitation Methods 0.000 claims abstract description 13
- 238000001914 filtration Methods 0.000 claims abstract description 9
- 238000005189 flocculation Methods 0.000 claims abstract description 9
- 230000016615 flocculation Effects 0.000 claims abstract description 9
- 239000010802 sludge Substances 0.000 claims description 37
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- MSFGZHUJTJBYFA-UHFFFAOYSA-M Sodium dichloroisocyanurate Chemical group [Na+].ClN1C(=O)[N-]C(=O)N(Cl)C1=O MSFGZHUJTJBYFA-UHFFFAOYSA-M 0.000 claims description 2
- 239000000919 ceramic Substances 0.000 claims description 2
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- 239000008394 flocculating agent Substances 0.000 abstract 1
- 244000144972 livestock Species 0.000 description 9
- 239000005416 organic matter Substances 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000006068 polycondensation reaction Methods 0.000 description 8
- 244000144977 poultry Species 0.000 description 8
- 238000004659 sterilization and disinfection Methods 0.000 description 8
- SVPXDRXYRYOSEX-UHFFFAOYSA-N Bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 7
- 229910001385 heavy metal Inorganic materials 0.000 description 7
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- 239000001569 carbon dioxide Substances 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
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- 230000002906 microbiologic Effects 0.000 description 2
- NHNBFGGVMKEFGY-UHFFFAOYSA-N nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 2
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- 229910052717 sulfur Inorganic materials 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 239000000592 Artificial Cell Substances 0.000 description 1
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- 241000244203 Caenorhabditis elegans Species 0.000 description 1
- 241000726221 Gemma Species 0.000 description 1
- CKLJMWTZIZZHCS-REOHCLBHSA-N L-aspartic acid Chemical compound OC(=O)[C@@H](N)CC(O)=O CKLJMWTZIZZHCS-REOHCLBHSA-N 0.000 description 1
- 230000036091 Metabolic activity Effects 0.000 description 1
- 208000008425 Protein Deficiency Diseases 0.000 description 1
- 241000282898 Sus scrofa Species 0.000 description 1
- 229940117013 Triethanolamine oleate Drugs 0.000 description 1
- GJCOSYZMQJWQCA-UHFFFAOYSA-N Xanthene Chemical compound C1=CC=C2CC3=CC=CC=C3OC2=C1 GJCOSYZMQJWQCA-UHFFFAOYSA-N 0.000 description 1
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- OAICVXFJPJFONN-UHFFFAOYSA-N phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
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- ZLMJMSJWJFRBEC-UHFFFAOYSA-N potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
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- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
-
- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/38—Organic compounds containing nitrogen
-
- 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic processes
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Abstract
The present invention provides a kind of aquaculture wastewater purifying treatment method, belongs to technical field of sewage, including separation of solid and liquid, acidification, Anaerobic Treatment, Aerobic Process for Treatment, flocculation sedimentation and film filtration treatment step；Above-mentioned step of flocculation precipitation flocculant include a kind of polyaminoacid and a kind of biological activity homopolymerization polysaccharide flowable, that form gel, above-mentioned biological activity homopolymerization polysaccharide and polyaminoacid promotor there are in the environment of, form a kind of hydrogel.The good purification of aquaculture wastewater purifying treatment method provided by the invention, processed in units amount and treatment effeciency are high, and decontamination is long with the growth survival period of microorganism, and preparation usage amount is small and input cost is low, and the anti-load-bearing capacity of system is strong, and operation and administration fee are cheap；It is evenly distributed inside flocculating agent molecule used in this method, crosslink density is small, and crosslinking points are more, and swellbility is big, stability and excellent adsorption, and bioavailability and practical value are high.
Description
Technical field
The invention belongs to technical field of sewage, and in particular to a kind of aquaculture wastewater purifying treatment method.
Background technique
Intensive culture at home and abroad rapidly develops in recent years, the excrement and sewage generated by intensive livestock and poultry breeding industry
Caused by stench, water eutrophication, propagation " infecting both domestic animals and human " disease the problems such as arouse great concern.But it is right
In the improvement of sewage of farm, still lacking at present can be by the generally accepted technique of raiser, and the processing difficulty of such sewage
It is very big.Existing livestock breed aquatics field is mostly that fowl and animal excrement is directly discharged into pond or rivers, and these contaminated water sources
River is poured with rainwater in flood season, serious pollution is caused to the surface water, underground water, soil and air, and water body richness is caused to be sought
Feedingization and the main reason for jeopardize livestock and poultry itself and human health, be China lake and offshore sea waters eutrophication.
The processing of aquaculture wastewater can be divided into physical method and chemical method by its handling principle at present, wherein physical method is mainly
Suspended material and pernicious gas in water removal are removed by mechanical, physics method, common method has precipitating, filtering, foam point
From, reverse osmosis, absorption etc.；Chemical method is mainly oxidation processes, in flocculant and coagulation etc., and the cultivation that these methods carry out is dirty
Water process receives water surface area influence, can only rest on surface, especially all harmful substances are simply by coagulation sedimentation basin
Bottom can not effectively be removed, and aquatic environment does not obtain final solution；Although there are also the modes of biological treatment, such as
Biofilter removes ammonia nitrogen and the effect of organic matter is relatively good, wherein anaerobism, aerobic biological treatment process are combined, it can
With make full use of anaerobism, amphimicrobian, aerobic microbiological metabolic activity Decomposition Wastewater in organic pollutant, by organic matter,
Nitrogen and phosphorus etc. are utilized as the nutrition of microorganism by microorganism, be finally decomposed to stable inorganic matter or synthetic cell substance and
As sludge by being separated in water, to make to purify the sewage, processing cost can be reduced simultaneously, reach discharge standard.But it wants
Realize that being kept completely separate for microorganism is impossible therefore harmful to health microorganism sometimes together with useless by infall process
Water enters environment together, pollutes.
It is more universal in heavy metal elements such as Dietary Supplemented Zinc, copper with the fast development of scale livestock farming, example
Such as, use high-copper also fairly common as the feed additive for promoting growth of pig.Appropriate heavy metal element can improve the life of livestock and poultry
Long performance brings good growth efficiency for Production of Livestock and Poultry.However, a most of huge sum of money for high dose heavy metal feed addictive
Category can be excreted with feces of livestock and poultry, for example, being discharged from excrement into 90% copper in livestock and poultry body and 90~95% zinc, directly
Connecing causes the content of beary metal in feces of livestock and poultry and sewage of farm to severely exceed.It is reported that China uses in feed every year
Heavy metal element additive be 15~180,000 tons, wherein about 100,000 tons of heavy metals are unutilized and that livestock and poultry are discharged is external.
When sewage of farm or biogas slurry are irrigated in farmland for a long time, heavy metal element can be built up in the soil, to produce to soil property
Raw certain negative effect such as inhibits crop growth, reduces Crops production and quality；And crop may also excessively absorb
Heavy metal element in soil after being eaten by animals and humans, will finally endanger the health of animals and humans.
Summary of the invention
A kind of high, decontamination that one of the objects of the present invention is to provide the processed in units amount and treatment effeciencies life of microorganism
Long survival period is long, the anti-load-bearing capacity of system is strong, preparation usage amount is small and input cost is low, operation and administration fee are cheap, purification
The good aquaculture wastewater purifying treatment method of effect.
The second object of the present invention is to provide that a kind of intramolecule is evenly distributed, crosslink density is small, crosslinking points are more, molten
Expansibility is big, stability and excellent adsorption, bioavailability and the high flocculant of practical value.
The technical solution that the present invention is taken to achieve the above object are as follows:
A kind of flocculant, it is characterised in that: include,
A) a kind of flowable, the polyaminoacid of gel is formed, the molecular weight of above-mentioned polyaminoacid is 3000~5000；
B) a kind of biological activity homopolymerization polysaccharide, above-mentioned homopolymerization polysaccharide are 10~15% weights with polyaminoacid weight
Amount is present in flocculant；
C) a kind of above-mentioned biological activity homopolymerization polysaccharide and a kind of polyaminoacid are in the environment of promotor exists, formation
A kind of hydrogel.Polycondensation occurs for polyaminoacid and cellulose, can form the porous hydrogel of surface porosity, swelling behavior,
Stability and absorption property are all improved, especially the groups such as O-H ,-COOH in hydrogel structure, in the same of absorption
When in the presence of the diversified forms such as complexing, ion exchange cohesion, and belong to it is renewable, can natural degradation green material.
Preferably, biological activity homopolymerization polysaccharide is cellulose, polyaminoacid is poly-aspartate, poly-aspartate
The ratio of α and beta comfiguration is 55:2~3 in molecule.The presence of beta molecule configuration in poly-aspartate, can substantially reduce polyaminoacid
With minimum activation energy needed for cellulose polycondensation reaction, the rate of polycondensation is caused to be accelerated, while the difference on molecular configuration, made
Difference occurs for the crosslinking degree for obtaining product molecule interchain, and the sky that compactness extent is more loose, molecular distribution is more uniform can be obtained
Between reticular structure, to increase the swelling space of hydrogel.
Preferably, promotor contains the following parts by weight: the glutaraldehyde of 1~2 parts by weight, 0.045~0.065
The 3- indolebutyric acid of parts by weight and the 2 thiophene carboxaldehyde of 0.033~0.038 parts by weight.3- indolebutyric acid and 2- thiophene first is added
As promotor, polycondensation ,-NH occur aldehyde for the O-H in the-COOH and cellulose in poly-aspartate2The electronics between O-H
When substitution, crosslinking points are more, and the swellbility of hydrogel is bigger, using in poly-aspartate backbone structure amido bond and promotion
, finally there is molecular radical as supporter inside the three dimensional network structure of formation, expands in molecular radical cohesion in agent
Internal duct while increasing swellbility, reduces crosslink density so that hydrogel inner space increases, make metal from
Son can more easily enter inside hydrosol molecular structure, be complexed with internal group, rather than only rest on surface shape
At complexing, increase it and adsorb complex performance, improve its bioavailability, and increases hydrogel to have to sour, light stabilization
Property, expand the practical value of hydrogel.
Preferably, the preparation step of flocculant is as follows: being added by weight for the ratio of 1:10~12 into cellulose
Concentration is that the liquor potassic permanganate of 0.05~0.1mol/L washes away Gao Meng at 50~55 DEG C after 10~15min of stir process
Sour potassium solution, the distilled water that 10~15 times of amounts are then added into pretreated cellulose mixes, then adds poly-aspartate
And promotor, be stirred to react 3.5~4h at 70~80 DEG C, dry and crush, cross 200~220 meshes to get.
A kind of aquaculture wastewater purifying treatment method is also disclosed in the present invention, comprising the following steps:
S1. it is separated by solid-liquid separation: the aquaculture wastewater containing solid content being passed through into equipment for separating liquid from solid, after carrying out pulp water separation, is sent
Enter acidification pool, water content control is 30~45% in the filter residue after pulp water separation, and without obvious solid content in filtrate, collection
Solid matter, which can be used as organic fertilizer use, reduces subsequent dirt by being separated by solid-liquid separation the larger molecular organics that can remove in sewage
Water process load and cost, and it is separated by solid-liquid separation the blocking that can also prevent pump, pipeline, valve etc., the use of equipment can be extended
Service life；
S2. acidification: after sewage flows into acidification pool, stopping 2~3h, adjust concentration, pH, carries out primary absorption and heavy
It forms sediment, acidification pool bottom of pond is equipped with filter packing, and filler is the graded sand and stone of 50~65cm thickness, adjusts acidity, precipitable sewage
In insoluble in acid suspended matter, impurity, while can by part long-chain hydrolysis of organic matter be short chain, small organic molecule, after raising
Continuous biodegradability, C, N, P, S ratio after acidification in waste water are more suitable for microorganism growth；
S3. the sewage after acidification Anaerobic Treatment: is sent into the anaerobic pond for being provided with the contact filler of microbe carrier
It is interior, 6~8h of Anaerobic Treatment is carried out, the biogas of generation is collected, under anaerobic, amphimicrobian and anaerobe group will
Organic matter is converted into methane and carbon dioxide, and organic matter of sewage concentration is high, and carbon, nitrogen ratio are moderate, Anaerobic Treatment gas generation property
It is more stable, and sludge quantity low output, it consumes energy low, operating cost is low；
S4. Aerobic Process for Treatment: the sewage after Anaerobic Treatment is sent into aerobic tank, and adds complex microorganism preparations, is carried out
Oxygen handles 8~10h, and Aerobic Process for Treatment can further decrease the content of BOD, COD in sewage, can also be by the organic amino in sewage
Nitrogen is converted into nitrate, and nitrogen phosphorus ligands effect is preferable, while eliminating the peculiar smell of sewage；
S5. flocculation sedimentation: the upper layer sewage after Aerobic Process for Treatment is sent into sedimentation basin, adds flocculant, dosage is
3~5g/L carries out 2~3h of coagulating sedimentation, and adding flocculant can the further metal ion in adsorption precipitation sewage and part
Microorganism, will be added in feed and undigested precipitation by metallic ion gets off, and can avoid the metal ion concentration in sewage
Caused by secondary pollution；
S6. film filtration treatment: by the supernatant after precipitation process by membrane bioreactor, through ultrafiltration membrane mistake therein
After filter, filtrate is collected, adding after disinfectant disinfects 1~2h can discharge, and can remove various maintain using ultrafiltration membrance filter
Suspended matter and bacterium avoid microorganism from entering environment, are recycled simultaneously, can reduce input cost.
Preferably, graded sand and stone is the mixture of river sand and zeolite in step S2, weight ratio is 3.5~4:1.5,
The granularity of above-mentioned river sand is 0.5~1.5mm, and zeolite particle size is 1.5~2.5mm.
Preferably, filler is contacted in step S3 uses elastomer, wherein comprising the biomembrane that microorganism is formed, on
Stating microorganism is at least one of denitrifying bacterium, nitrifier, saccharomycete, lactic acid bacteria.
Preferably, in step S4 in complex microorganism preparations containing nitrite bacteria, Thiobacillus, bacillus subtilis,
At least one of bacillus licheniformis, pseudomonad.Under artificial aerobic condition, to sewage and various micropopulations into
The continuous mixed culture of row, forms activated sludge, using the biological flocculation and precipitation, absorption and oxidation of activated sludge, to decompose removal
Organic pollutant in sewage makes to purify the sewage.
Preferably, carrying out deep layer inflation in step S4 during Aerobic Process for Treatment, ventilatory capacity is 200~250m3/h。
Preferably, filters pressing after can collecting bottom activated sludge, gained sludge can make compost after the completion of Aerobic Process for Treatment,
Filtrate can send back to anaerobic pond and/or aerobic tank.
Preferably, the sludge that coagulating sedimentation generates in step S5 can periodically drain back into aerobic tank and be activated sludge or row
System out.
Preferably, disinfectant is sodium dichloro cyanurate or sym-closene in step S6, membrane bioreactor is adopted
With polymeric membrane bioreactor or ceramic membrane bioreactor.The effect that disinfectant has sterilization, disinfection is added, it can be by sewage
In harmful microorganism equal size be preferably minimized, reduce biohazard.
Preferably, the sludge that membrane bioreactor generates, which periodically drains back into anaerobic pond or adds to aerobic tank, makees activity
Sludge.
The invention has the benefit that
1) aquaculture wastewater concatenates membrane bioreactor and coagulative precipitation after conventional anaerobic-Aerobic Process for Treatment in the present invention
Advanced treating, can remove COD, nitrogen phosphorus organic matter, metal ion, the microorganism etc. in sewage, processed in units amount and processing effect
Rate is high, and decontamination is extended with the growth period of microorganism and survival period, and activated sludge is recycled, and has both realized the net of aquaculture wastewater
Change processing, and improve utilization of resources value；
2) purification method in the present invention can realize the high-efficiency low energy consumption removal of nitrogen phosphorus, also have disinfection effect, together
When effectively reduce the generation of sludge quantity, the anti-load-bearing capacity of system is strong, and preparation usage amount is small and input cost is low, is suitable for
Water quality significantlys change, and operation is simple and easy to control, and operation and administration fee are cheap, and wastewater purifying efficiency is good；
3) poly-aspartate-cellulose aquagel prepared in the present invention, intramolecule is evenly distributed, crosslink density is small,
Crosslinking points are more, have excellent swellability, stability and absorption property, while using functional group chemisorption, exist
The cohesion of the diversified forms such as complexing, ion exchange, bioavailability and practical value are higher, belong to it is renewable, can natural degradation
Green material.
Present invention employs above-mentioned technical proposals to provide a kind of aquaculture wastewater purifying treatment method, compensates for the prior art
Deficiency, reasonable design, easy operation.
Detailed description of the invention
Fig. 1 be in the embodiment of the present invention 2 made poly-aspartate-cellulose aquagel through high temperature drying treated SEM
Photo；
Fig. 2 is freeze-dried treated the SEM of made poly-aspartate-cellulose aquagel in the embodiment of the present invention 2
Photo；
Fig. 3 is purification system flow diagram of the invention.
Specific embodiment
Technical solution of the present invention is described in further detail below in conjunction with specific embodiment and attached drawing:
Embodiment 1:
A kind of flocculant, it is characterised in that: include,
A) a kind of flowable, the polyaminoacid of gel is formed, the molecular weight of above-mentioned polyaminoacid is 3000~5000；
B) a kind of biological activity homopolymerization polysaccharide, above-mentioned homopolymerization polysaccharide are deposited with 10% weight of polyaminoacid weight
It is in flocculant；
C) a kind of above-mentioned biological activity homopolymerization polysaccharide and a kind of polyaminoacid are in the environment of promotor exists, formation
A kind of hydrogel.Polycondensation occurs for polyaminoacid and cellulose, can form the porous hydrogel of surface porosity, swelling behavior,
Stability and absorption property are all improved, especially the groups such as O-H ,-COOH in hydrogel structure, in the same of absorption
When in the presence of the diversified forms such as complexing, ion exchange cohesion, and belong to it is renewable, can natural degradation green material.
Biological activity homopolymerization polysaccharide is cellulose, and polyaminoacid is poly-aspartate, α and β in poly-aspartate molecule
The ratio of configuration is 55:2.The presence of beta molecule configuration in poly-aspartate, can substantially reduce polyaminoacid and cellulose polycondensation
Minimum activation energy needed for reaction, causes the rate of polycondensation to be accelerated, while the difference on molecular configuration, so that product molecule chain
Between crosslinking degree occur difference, the space net structure that compactness extent is more loose, molecular distribution is more uniform can be obtained,
To increase the swelling space of hydrogel.
Promotor contains the following parts by weight: the glutaraldehyde of 1 parts by weight, 0.045 parts by weight 3- indolebutyric acid and
The 2 thiophene carboxaldehyde of 0.034 parts by weight.3- indolebutyric acid and 2 thiophene carboxaldehyde is added as promotor, in poly-aspartate
- COOH and cellulose in O-H occur polycondensation ,-NH2Between O-H electronics replace when, crosslinking points are more, hydrogel it is molten
Expansibility is bigger, is agglomerated using the molecular radical in the amido bond and promotor in poly-aspartate backbone structure, is finally being formed
Three dimensional network structure inside there is molecular radical as supporter, internal duct is expanded, so that hydrogel inner space
Increase, while increasing swellbility, reduces crosslink density, metal ion is allow to more easily enter water-soluble xanthan molecule
Inside configuration is complexed with internal group, rather than only rests on surface and form complexing, increases it and adsorbs complex performance, mentions
Its high bioavailability, and hydrogel is increased with the stability to acid, light, expand the practical value of hydrogel.
The preparation step of flocculant is as follows: concentration is added into cellulose by weight the ratio for being 1:10 is
The liquor potassic permanganate of 0.05mol/L at 50 DEG C after stir process 10min, washes away liquor potassic permanganate, then to pre- place
The distilled water that 10 times of amounts are added in the cellulose managed mixes, then adds poly-aspartate and promotor, stirs at 70 DEG C anti-
Answer 3.5h, dry and crush, cross 200 meshes to get.
A kind of aquaculture wastewater purifying treatment method, comprising the following steps:
S1. it is separated by solid-liquid separation: the aquaculture wastewater containing solid content being passed through into equipment for separating liquid from solid, after carrying out pulp water separation, is sent
Enter acidification pool, water content control is 35% in the filter residue after pulp water separation, and without obvious solid content, the solid of collection in filtrate
Substance can be used as organic fertilizer use and be reduced at subsequent sewage by being separated by solid-liquid separation the larger molecular organics that can remove in sewage
Load and cost are managed, and is separated by solid-liquid separation the blocking that can also prevent pump, pipeline, valve etc., can extend equipment uses the longevity
Life；
S2. acidification: after sewage flows into acidification pool, stopping 3h, adjust concentration, pH, carries out primary absorption and precipitating,
Acidification pool bottom of pond is equipped with filter packing, and filler is the graded sand and stone of 55cm thickness, adjusts acidity, insoluble in precipitable sewage
Suspended matter, impurity in acid, while can be short chain, small organic molecule by part long-chain hydrolysis of organic matter, raising is subsequent can
Biochemical, C, N, P, S ratio after acidification in waste water are more suitable for microorganism growth；
S3. the sewage after acidification Anaerobic Treatment: is sent into the anaerobic pond for being provided with the contact filler of microbe carrier
It is interior, Anaerobic Treatment 6.5h is carried out, the collecting methane of generation is to air accumulator, under anaerobic, amphimicrobian and anaerobe
Organic matter is converted methane and carbon dioxide by group, and organic matter of sewage concentration is high, and carbon, nitrogen ratio are moderate, and Anaerobic Treatment produces
Gas performance is more stable, and sludge quantity low output, consumes energy low, operating cost is low；
S4. Aerobic Process for Treatment: the sewage after Anaerobic Treatment is sent into aerobic tank, and adds complex microorganism preparations, is carried out
Oxygen handles 8h, and Aerobic Process for Treatment can further decrease the content of BOD, COD in sewage, can also turn the organic ammonia nitrogen in sewage
Nitrate is turned to, nitrogen phosphorus ligands effect is preferable, while eliminating the peculiar smell of sewage；
S5. flocculation sedimentation: the upper layer sewage after Aerobic Process for Treatment is sent into sedimentation basin, adds flocculant, dosage is
3g/L carries out coagulating sedimentation 2.5h, adds the micro- life of metal ion and part that flocculant can further in adsorption precipitation sewage
Object, will be added in feed and undigested precipitation by metallic ion gets off, and can avoid the metal ion concentration in sewage and draws
The secondary pollution risen；
S6. film filtration treatment: by the supernatant after precipitation process by membrane bioreactor, through ultrafiltration membrane mistake therein
After filter, collect filtrate, add disinfectant disinfection treatment 2h after can discharge, using ultrafiltration membrance filter can remove it is various maintain it is outstanding
Floating object and bacterium avoid microorganism from entering environment, are recycled simultaneously, can reduce input cost.
Graded sand and stone is the mixture of river sand and zeolite, weight ratio 3.5:1.5, the grain of above-mentioned river sand in step S2
Degree is 0.5~1.5mm, and zeolite particle size is 1.5~2.5mm.
Filler is contacted in step S3 and uses elastomer, wherein comprising the biomembrane that microorganism is formed, mentioned microorganism is
The arbitrary proportion mixing of denitrifying bacterium, nitrifier, saccharomycete.
Arbitrary proportion in step S4 in complex microorganism preparations containing nitrite bacteria, Thiobacillus, bacillus subtilis
Mixing.Under artificial aerobic condition, sewage and various micropopulations are continuously mixed, form activated sludge, benefit
Obtain sewage with the biological flocculation and precipitation, absorption and oxidation of activated sludge to decompose the organic pollutant in removal sewage
Purification.
Deep layer inflation, ventilatory capacity 200m are carried out in step S4 during Aerobic Process for Treatment3/h；After the completion of Aerobic Process for Treatment, it can incite somebody to action
Filters pressing after bottom activated sludge is collected, gained sludge can make compost, and filtrate can send back to anaerobic pond and/or aerobic tank.
The sludge that coagulating sedimentation generates in step S5 can periodically drain back into aerobic tank and do activated sludge or discharge system.
Disinfectant is sym-closene in step S6, and membrane bioreactor uses polymeric membrane bioreactor.It is added
Disinfectant has the effect of sterilization, disinfection, can be preferably minimized the harmful microorganism equal size in sewage, reduces biohazard.
The sludge that membrane bioreactor generates, which periodically drains back into anaerobic pond or adds to aerobic tank, makees activated sludge.
Embodiment 2:
A kind of aquaculture wastewater purifying treatment method, comprising the following steps:
S1. it is separated by solid-liquid separation: the aquaculture wastewater containing solid content being passed through into equipment for separating liquid from solid, after carrying out pulp water separation, is sent
Enter acidification pool, water content control is 43% in the filter residue after pulp water separation, and the solid matter of collection, which can be used as organic fertilizer, to be made
With without obvious solid content in filtrate；
S2. acidification: after sewage flows into acidification pool, 2.5h is stopped, adjusts concentration, pH, wherein bottom of pond is equipped with filtering
Filler, depth of packing are the graded sand and stone of 60cm, carry out primary absorption and precipitating, and above-mentioned graded sand and stone is river sand and zeolite
Mixture, weight ratio 3.8:1.5, the granularity of above-mentioned river sand are 0.5~1.5mm, and zeolite particle size is 1.5~2.5mm；
S3. Anaerobic Treatment: the sewage after acidification is sent into anaerobic pond, is wherein provided with microbe carrier in pond
Contact filler, carry out Anaerobic Treatment 7.5h, the collecting methane of generation arrives air accumulator, above-mentioned contact filler using elastomer,
The biomembrane wherein formed comprising microorganism, mentioned microorganism are the arbitrary proportion mixing of denitrifying bacterium, nitrifier, saccharomycete；
S4. Aerobic Process for Treatment: the sewage after Anaerobic Treatment is sent into aerobic tank, and adds complex microorganism preparations, is carried out
Oxygen handles 8.5h, contains nitrite bacteria, Thiobacillus, bacillus subtilis, lichens gemma bar in above-mentioned complex microorganism preparations
The arbitrary proportion of bacterium mixes, and deep layer inflation, ventilatory capacity 250m are carried out during Aerobic Process for Treatment3/ h can after the completion of Aerobic Process for Treatment
Filters pressing after bottom activated sludge is collected, gained sludge can make compost, and filtrate can send back to anaerobic pond and/or aerobic tank；
S5. flocculation sedimentation: the upper layer sewage after Aerobic Process for Treatment is sent into sedimentation basin, and adding flocculant, to carry out coagulation heavy
Shallow lake 2h, above-mentioned flocculant are poly-aspartate-cellulose aquagel, dosage 4.5g/L, the sludge that coagulating sedimentation generates
Aerobic tank can periodically be drained back into and do activated sludge or discharge system；
S6. film filtration treatment: by the supernatant after precipitation process by membrane bioreactor, through ultrafiltration membrane mistake therein
After filter, filtrate is collected, can be discharged after adding disinfectant disinfection treatment 1.5h, above-mentioned disinfectant is sym-closene, film biology
Reactor uses polymeric membrane bioreactor.
The preparation step of flocculant is as follows in step S5: concentration being added into cellulose by weight for the ratio of 1:11
For the liquor potassic permanganate of 0.08mol/L, at 55 DEG C after stir process 13min, liquor potassic permanganate is washed away, then to pre-
The distilled water that 12 times of amounts are added in processed cellulose mixes, then adds poly-aspartate and promotor, stirs at 75 DEG C
3.5h is reacted, dries and crushes, crosses 220 meshes to get above-mentioned cellulose is 13.5% weight with poly-aspartate weight
Amount is present in flocculant, and the ratio of α and beta comfiguration is 55:3 in poly-aspartate molecule, and promotor includes following parts by weight
Component: the 2 thiophene carboxaldehyde of the glutaraldehyde of 1.5 parts by weight, the 3- indolebutyric acid of 0.053 parts by weight and 0.036 parts by weight
Embodiment 3:
A kind of aquaculture wastewater purifying treatment method advanced optimizes, the concrete measure taken on the basis of embodiment 2
It is as follows:
S1. it is separated by solid-liquid separation: the aquaculture wastewater containing solid content being passed through into equipment for separating liquid from solid, after carrying out pulp water separation, is sent
Enter acidification pool, water content control is 43% in the filter residue after pulp water separation, and the solid matter of collection, which can be used as organic fertilizer, to be made
With without obvious solid content in filtrate；
S2. acidification: after sewage flows into acidification pool, 2.5h is stopped, adjusts concentration, pH, wherein bottom of pond is equipped with filtering
Filler, depth of packing are the graded sand and stone of 60cm, carry out primary absorption and precipitating, and above-mentioned graded sand and stone is river sand and zeolite
Mixture, weight ratio 3.8:1.5, the granularity of above-mentioned river sand are 0.5~1.5mm, and zeolite particle size is 1.5~2.5mm；
S3. Anaerobic Treatment: the sewage after acidification is sent into anaerobic pond, is wherein provided with microbe carrier in pond
Contact filler, carry out Anaerobic Treatment 7.5h, the collecting methane of generation arrives air accumulator, above-mentioned contact filler using elastomer,
The biomembrane wherein formed comprising microorganism, mentioned microorganism are the arbitrary proportion mixing of denitrifying bacterium, nitrifier, saccharomycete；
S4. Aerobic Process for Treatment: the sewage after Anaerobic Treatment is sent into aerobic tank, and adds complex microorganism preparations and gain
Agent carries out Aerobic Process for Treatment 8.5h, in above-mentioned complex microorganism preparations containing nitrite bacteria, Thiobacillus, bacillus subtilis,
The arbitrary proportion of bacillus licheniformis mixes, and deep layer inflation, ventilatory capacity 250m are carried out during Aerobic Process for Treatment3/ h, Aerobic Process for Treatment
After the completion, filters pressing after can collecting bottom activated sludge, gained sludge can make compost, and filtrate can send back to anaerobic pond and/or good
Oxygen pond, the additive amount of above-mentioned accelerant are the 0.35% of microorganism formulation additional amount, contain weight accounting 3.6% in accelerant
Triethanolamine oleate and 4.8% sulfated castor oil, the addition of accelerant can reduce between sludge, microorganism and sewage
Surface-active, make between ternary Rapid contact and to react, while as purification carries out, the thickness of pool bottom sludge increases
Add, sludge internal environment is caused to be in anoxic or anaerobic state, accelerant can be cooperateed with and is deeply infiltrated into activated sludge
Portion, and hydrone and oxygen entrance are carried, improve the internal environment and viscosity of sludge, makes the microorganism growth period inside sludge
Extended with survival period, and then increase processed in units amount and treatment effeciency, and reduce the investment of aerobic microbiological preparation at
This；
S5. flocculation sedimentation: the upper layer sewage after Aerobic Process for Treatment is sent into sedimentation basin, and adding flocculant, to carry out coagulation heavy
Shallow lake 2h, above-mentioned flocculant are poly-aspartate-cellulose aquagel, dosage 4.5g/L, the sludge that coagulating sedimentation generates
Aerobic tank can periodically be drained back into and do activated sludge or discharge system；
S6. film filtration treatment: by the supernatant after precipitation process by membrane bioreactor, through ultrafiltration membrane mistake therein
After filter, filtrate is collected, can be discharged after adding disinfectant disinfection treatment 1.5h, above-mentioned disinfectant is sym-closene, film biology
Reactor uses polymeric membrane bioreactor.
Embodiment 4:
A kind of aquaculture wastewater purifying treatment method compares test on the basis of embodiment 2, and that takes specifically arranges
Apply as follows: flocculant used in step S5 is poly-aspartate-cellulose aquagel, and preparation step is as follows: by weight
The liquor potassic permanganate that concentration is 0.08mol/L, the stir process at 55 DEG C are added into cellulose for the ratio of 1:11
After 13min, liquor potassic permanganate is washed away, the distilled water that 12 times of amounts are then added into pretreated cellulose mixes, then adds
Addition polymerization aspartic acid and promotor are stirred to react 3.5h at 75 DEG C, dry and crush, and cross 220 meshes to get above-mentioned promotion
Agent is the glutaraldehyde of 1.5 parts by weight, i.e., 3- indolebutyric acid and 2 thiophene carboxaldehyde are not added in preparation process.
Embodiment 5:
By the aquaculture wastewater of certain farm, 4 groups are equally divided into, carries out purified treatment with the method for embodiment 2~4 respectively
Group as test group 1~3, the group of purified treatment is carried out using polyacrylamide as flocculant used in step S5
For control group, effluent quality monitoring result such as the following table 1.
1 aquaculture wastewater purified treatment effluent quality testing result of table
| Test group 1 | Test group 2 | Test group 3 | Control group | Before processing | |
| COD/mg·L-1 | 75 | 65 | 83 | 125 | 6547 |
| BOD/mg·L-1 | 37 | 24 | 38 | 158 | 1752 |
| Ammonia nitrogen/mgL-1 | 23 | 12 | 25 | 54 | 849 |
| SS/mg·L-1 | 52 | 45 | 54 | 89 | 6571 |
| Cu2+/mg·L-1 | 1.8 | 0.9 | 1.7 | 3.5 | 257 |
| Zn2+/mg·L-1 | 1.2 | 0.6 | 1.5 | 2.1 | 287 |
| Roundworm egg/L-1 | 12 | 6 | 15 | 29 | 541 |
| Coliform group count/mL-1 | 254 | 210 | 267 | 354 | 2566 |
As seen from the above table, the treatment effect of test group is substantially better than control group, illustrates flocculant employed in the present invention
Poly-aspartate-cellulose aquagel effect is more preferable；It analyzes from the data of test group 1 and 3 it is found that preparing hydrogel
Promotor 3- indolebutyric acid and 2 thiophene carboxaldehyde are added in the process certain beneficial effect to final water quality；And test group 2
Treatment effect is optimal, is due to joined a small amount of accelerant in processing step S4, so that the growth period of microorganism and survival
Phase extends, and then pushes treatment effect to better direction.
The prior art of routine techniques dawn known to those skilled in the art in above-described embodiment, therefore herein no longer in detail
Carefully repeat.
The above embodiments are only used to illustrate the present invention, and not limitation of the present invention, the ordinary skill people of this field
Member can also make a variety of changes and modification without departing from the spirit and scope of the present invention.Therefore, all equivalent
Technical solution also belong to scope of the invention, scope of patent protection of the invention should be defined by the claims.
Claims (10)
1. a kind of flocculant, it is characterised in that: include,
A) a kind of flowable, the polyaminoacid of gel is formed, the molecular weight of the polyaminoacid is 3000 ~ 5000；
B) a kind of biological activity homopolymerization polysaccharide, the homopolymerization polysaccharide are present in 10 ~ 15% weight of polyaminoacid weight
In flocculant；
C) a kind of biological activity homopolymerization polysaccharide and a kind of polyaminoacid promotor there are in the environment of, form a kind of water
Gel.
2. a kind of flocculant according to claim 1, it is characterised in that: the biological activity homopolymerization polysaccharide is fiber
Element；The polyaminoacid is poly-aspartate, and the ratio of α and beta comfiguration is 55:2 ~ 3 in the poly-aspartate molecule.
3. a kind of flocculant according to claim 1, it is characterised in that: the promotor includes the group of following parts by weight
Point: the 2- thiophene of the glutaraldehyde of 1 ~ 2 parts by weight, the 3- indolebutyric acid of 0.045 ~ 0.065 parts by weight and 0.033 ~ 0.038 parts by weight
Formaldehyde.
4. a kind of flocculant according to claim 1, it is characterised in that: the preparation step of the flocculant is as follows: by weight
Amount is than being after liquor potassic permanganate processing is added into cellulose for the ratio of 1:10 ~ 12, to clean, then to pretreated fiber
Distilled water is added in element to mix, then adds poly-aspartate and promotor, after being stirred to react, dries and crush, sieving to get.
5. a kind of aquaculture wastewater purifying treatment method using any one of claim 1 ~ 4 flocculant, it is characterised in that: packet
Include following steps:
S1. it is separated by solid-liquid separation: the aquaculture wastewater containing solid content is passed through into equipment for separating liquid from solid, after carrying out pulp water separation, be sent into acid
Change pond；
S2. acidification: after sewage flows into acidification pool, stopping 2 ~ 3h, adjust concentration, pH, carries out primary absorption and precipitating, described
Acidification pool bottom of pond is equipped with filter packing, and the filler is the graded sand and stone of 50 ~ 65cm thickness；
S3. Anaerobic Treatment: the sewage after acidification being sent into the anaerobic pond for the contact filler for being provided with microbe carrier, into
Row 6 ~ 8h of Anaerobic Treatment, collects the biogas of generation；
S4. Aerobic Process for Treatment: the sewage after Anaerobic Treatment is sent into aerobic tank, and adds complex microorganism preparations, carries out aerobic place
Manage 8 ~ 10h；
S5. flocculation sedimentation: the upper layer sewage after Aerobic Process for Treatment is sent into sedimentation basin, adds flocculant, and dosage is 3 ~ 5g/
L carries out 2 ~ 3h of coagulating sedimentation；
S6. film filtration treatment: by the supernatant after precipitation process by membrane bioreactor, after ultrafiltration membrance filter therein,
Filtrate is collected, adding after disinfectant disinfects 1 ~ 2h can discharge.
6. a kind of aquaculture wastewater purifying treatment method according to claim 5, it is characterised in that: gradation in the step S2
Sandstone is the mixture of river sand and zeolite, and weight ratio is 3.5 ~ 4:1.5, and the granularity of the river sand is 0.5 ~ 1.5mm, the boiling
Stone grain degree is 1.5 ~ 2.5mm.
7. a kind of aquaculture wastewater purifying treatment method according to claim 5, it is characterised in that: contacted in the step S3
Filler uses elastomer, wherein the microorganism is denitrifying bacterium, nitrifier, yeast comprising the biomembrane that microorganism is formed
At least one of bacterium, lactic acid bacteria.
8. a kind of aquaculture wastewater purifying treatment method according to claim 5, it is characterised in that: compound in the step S4
In microorganism formulation containing in nitrite bacteria, Thiobacillus, bacillus subtilis, bacillus licheniformis, pseudomonad at least
It is a kind of.
9. a kind of aquaculture wastewater purifying treatment method according to claim 5, it is characterised in that: aerobic in the step S4
Deep layer inflation is carried out during processing, ventilatory capacity is 200 ~ 250m3/h；It, can be by bottom activated sludge after the completion of the Aerobic Process for Treatment
Filters pressing after collection, gained sludge can make compost, and filtrate can send back to anaerobic pond and/or aerobic tank.
10. a kind of aquaculture wastewater purifying treatment method according to claim 5, it is characterised in that: disappear in the step S6
Toxic agent is sodium dichloro cyanurate or sym-closene, and membrane bioreactor uses polymeric membrane bioreactor or ceramic membrane
Bioreactor.
Priority Applications (1)
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| CN112499914A (en) * | 2021-01-12 | 2021-03-16 | 惠州市济圣环保科技有限公司 | Method for preparing derivative of aquaculture sewage by recycling |
| CN114084964A (en) * | 2020-08-24 | 2022-02-25 | 中国石油化工股份有限公司 | Aromatic organic compound wastewater biological treatment accelerant and preparation method and application thereof |
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