CN105833832A - Biochemical preparation for treating glutamic acid fermentation sewage - Google Patents
Biochemical preparation for treating glutamic acid fermentation sewage Download PDFInfo
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- CN105833832A CN105833832A CN201610455760.0A CN201610455760A CN105833832A CN 105833832 A CN105833832 A CN 105833832A CN 201610455760 A CN201610455760 A CN 201610455760A CN 105833832 A CN105833832 A CN 105833832A
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- 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
- C02F3/341—Consortia of bacteria
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/02—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material
- B01J20/10—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate
- B01J20/103—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising inorganic material comprising silica or silicate comprising silica
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
Abstract
The invention relates to a biochemical preparation for treating glutamic acid fermentation sewage. The biochemical preparation contains a physical adsorbent and a composite microbial preparation, wherein the composite microbial preparation is prepared from the following raw materials in parts by weight: 6-8 parts of azotobacter chroococcum, 4-6 parts of Rhodococcus sp., 4-6 parts of bacillus amyloliquefaciens, 3-5 parts of clostridium papyrosolvens, 3-5 parts of penicillium ochrochlorron, 3-4 parts of Pseudomonas stutzeri and 2-3 parts of bacillus cereus. The biochemical preparation contains a variety of microbes which have excellent degradation capability to refractory contaminants, and all strains are reasonably combined, so that the biochemical preparation has a good degradation effect and has a broad application prospect.
Description
Technical field
The present invention relates to the process preparation of a kind of waste water, particularly provide a kind of biochemical preparation for administering glutamic acid fermentation sewage.
Background technology
Sodium glutamate chemical name alpha-amido 1,3-propanedicarboxylic acid one sodium, is a kind of salt formed by sodium ion and glutamate ion, and its Glutamic Acid is a kind of aminoacid, and sodium is a kind of metallic element.The main component of flavouring agent monosodium glutamate conventional in life is exactly sodium glutamate.Monosodium glutamate is flavoring agent conventional in daily life, by increasing capacitance it is possible to increase the delicate flavour of food, is conducive to improving the human body digestibility to food.Additionally, glutamic acid has again highly important function, it is widely used in food, medicine, the field such as industrial and agriculture.
The main source of glutamic acid fermentation sewage is: fermentation liquor extracts the waste liquor after glutamic acid or ion exchange tail washings；The washes of various equipment (tank of sizing mixing, liquefied pot, saccharifying tank, fermentation tank, extraction pot, the tank etc. of neutralization decolouring) in production process；Ion exchange resin washing and regenerative wastewater；Liquefaction (95 DEG C) is to saccharifying, the cooling water of saccharifying to each stages such as fermentation；Various condensed waters (technique such as liquefaction, saccharifying, concentration)；
The feature of Some Domestic manufacturer production waste water quality and subject matter
On the one hand: the electricity such as the extraction of glutamic acid generally employing-from the method for friendship, make glutamic acid crystallization out by adding concentrated sulphuric acid regulation isoelectric point, IP, and production process producesAmmonium sulfateWaste liquid, brings greatly difficulty to liquid waste processing, and environment, water source are caused directly harm.
On the other hand: the greatest contamination source in monosodium glutamate industry Ye Shi China fermentation industry, according to statistics, msg product per ton produces high-concentration waste water about 15 tons.Monosodium glutamate industry high concentrated organic wastewater is seriously polluted, is the common problem that industry is prominent.Fermentation waste liquor or glutamate wastewater are the primary pollution source of glutamate production industry.
Last: absorption method depends on the specific surface area that adsorbent is huge, the pollutant in water are removed by physical absorption or chemisorbed.Activated carbon is because having abundant pore structure and huge specific surface area, and its chemical stability is good, high adsorption capacity, is often widely used as a kind of important sorbent material, but it is relatively costly.The nonmetallic ion mineral such as attapulgite are also utilized to adsorb, but natural non-metallic mineral have some limitation following as adsorbent: natural non-metallic mineral density is compared with big and specific surface area is limited, how electronegative natural non-metallic mineral surfaces is, and directly use natural non-metallic fine ore such as clay minerals as adsorbent, after there is absorption, solid-liquid is difficult to the problem separated.
It is reported, often produce 1t monosodium glutamate, will be about discharging the mother solution after 10-15 ton extracts glutamic acid, 10,000,000 tons of this high concentrated organic wastewaters are discharged in the whole nation every year.Not only severe contamination natural environment, and constrain the development of monosodium glutamate industry.Although glutamate production enterprise, scientific research institution and relevant universities and colleges have all carried out substantial amounts of research to improvement.But, the most also do not have the complete set technology of maturation to be applied to production practices.Major problem is that one-time investment is excessive, or day-to-day operation expense is too high, most Gourmet Powder Factories cannot bear, it has to the present situation of long term maintenance discharge beyond standards.
Therefore, study a kind of biochemical preparation processing and administering glutamic acid fermentation sewage, to reduce contaminated wastewater, to turn waste into wealth, be that this area is needed badly and solved the technical problem that.
Summary of the invention
It is an object of the invention to the deficiency for traditional handicraft, it is provided that the process technique of a kind of glutamic acid fermentation waste water, it significantly reduces production cost, and production process is easy and simple to handle, stable and reliable product quality.Meet the requirement of comprehensive utilization of resources, energy-saving and emission-reduction, decrease discharging of waste liquid simultaneously, alleviate sewage disposal burden, bring huge economic benefit and environmental benefit.In order to realize the object of the invention, adopt the following technical scheme that
A kind of biochemical preparation for administering glutamic acid fermentation sewage, it is characterised in that include physical absorbent and complex microorganism preparations.
Described physical absorbent is: according to the mass ratio mixing that forsterite powder, conch meal, crushed crude pearlite, pore creating material mass ratio are 5:2:2:3; stir and be placed in comminutor; add compound 22-25%(weight) water, pelletize, obtaining particle diameter is 3～5mmSphericalGreen compact；It is dried 20h under the conditions of 100 DEG C, under the conditions of 980 DEG C, calcines 1h, obtain physical absorbent.
Described complex microorganism preparations includes the raw material of following weight portion:
Azotobacter chroococcum 6-8 part, Rhodococcus fascians 4-6 part, bacillus amyloliquefaciens 4-6 part, Clostridium papyrosolvens 3-5 part, green ochre penicillium sp 3-5 part, pseudomonas 3-4 part, Bacillus cercus 2-3 part.
Described azotobacter chroococcum is (Azotobacter chroococcum) CGMCC3768(CN102021118)
Described Rhodococcus fascians be Rhodococcus fascians (Rhodococcus sp.) CGMCC NO.6924(sees CN104140935A)；
Described bacillus amyloliquefaciens be (Bacillus amyloliquefaciens) ATCC 23843；
Described Clostridium papyrosolvens be (Clostridium papyrosolvens) ATCC 700395；
Described green ochre penicillium sp is (penicillium ochrochlorron) CGMCC
NO.4390(CN102174411)；
Described pseudomonas be (Pseudomonas stutzeri) CCTCC NO.2012281 (CN102876617)；
Said waxy bacillus cereus is (bacillus cereus) CGMCC NO.3836 (CN102899277)
By above azotobacter chroococcum, Rhodococcus fascians, bacillus amyloliquefaciens, Clostridium papyrosolvens, green ochre penicillium sp, pseudomonas, Bacillus cercus, all control 1 × 10 according to cellar culture concentration7Individual/gram, the bacterium solution cultivated is mixed to get liquid bacterial agent according to part by weight；
The preparation method of described composite bacteria agent capable is, takes aforesaid liquid microbial inoculum and mixes with adsorbent stirring,
According to microbial inoculum: adsorbent is the weight ratio mixing of 1:1.It is dried: will mix material and be dried, baking temperature is 20-50 DEG C, and dried water content is 20-30%；Inspection, packaging: checking by quality standard, finished product is packed by weight, obtains biological preparation.
Described adsorbent is made up of the raw material of following weight proportioning: attapulgite 3 parts, montmorillonite 3 parts, chitosan 2 parts, and above-mentioned attapulgite, montmorillonite, chitosan are 100 mesh.
Utilize the method that above-mentioned biochemical preparation carries out glutamic acid fermentation waste water process, it is characterised in that comprise the steps:
(1) by glutamic acid fermentation waste water after grid, entering setting pot, the sewage through girt-water separation enters primary sedimentation pond, by preliminary sedimentation tank,Promote the buoyance lift of oils and fats in waste water, reduce the content of float；
(2) physical absorbent is prepared
(3) according to the addition of sewage per ton interpolation 0.5kg, physical absorbent is added in sewage in the waste water processed through preliminary sedimentation tank enters Aeration tank, Aeration tank；
After physical absorbent processes, part NH3-N, sulfate radical are removed；
(4) waste water through Air Exposure enters sedimentation tank, and regulation pH is 6.5-7.0, and waste water per ton adds composite bacteria agent capable 15-20 gram every time, and sewage residence time in sedimentation tank controls to be to discharge after 24 hours.
The beneficial effect that the present invention obtains:
1 forsterite is commonly used for refractory material: manufacture forsterite brick, for ladle, as filler for tap holes of electric furnace primary raw material etc. in glass melter, but single to its exploitation Application comparison, and the above-mentioned refractory material purposes of forsterite is strict to granularity requirements, it is only necessary to coarseness and middle granularity, fine powder is made not have purposes, adding the brittle a large amount of fine powder of generation under development that causes of forsterite, above-mentioned forsterite fine powder is used for filling out ditch, causes the wasting of resources.And the fine fraction that wet production line produces is walked with river drift, causes serious environmental pollution.
After the present invention uses physical absorption, not only twice laid forsterite fine powder, and through physical absorption, part NH3-N, sulfate radical are removed, and greatly reduce time and the dosage of biological treatment microbial inoculum of subsequent biological treatment, also reduce processing cost.
2 composite bacteria agent capables are specifically designed for through physical absorption, remove the sewage after most ammonia-nitrogen sulfate radical to be designed, by the various strains that can form dominant microflora, it is configured to high-efficiency microorganism preparation, it is added in Waste Water Treatment by a certain amount of, accelerate the degraded of microbe, to improve the biological treatment efficiency of system, it is ensured that system stable operation.It contains the multiple microorganism having excellent degradation capability to Recalcitrant chemicals, reasonable compatibility between each strain, symbiosis is coordinated, the most not antagonism, activity is high, and Biomass is big, breeding is fast, add in Waste Water Treatment, macromole, hard-degraded substance are had good degradation effect, traditional propylhomoserin process discharge waste water is had the treatment effect of uniqueness.Be suitable to the application preparation method and produce discharge of wastewater process, the process water yield and water quality treatment can be improved, reduce operating cost, promote qualified discharge.
3 adsorbents are to be the natural material of main body containing attapulgite, containing a number of glutinous grain, it is made to have electronegativity in various degree in aqueous, the change of this electronegativity and raw wastewater present the processes such as metastable particle generation charge neutrality, absorption, destroy the potential balance of raw wastewater, collision between aggravation particle so that the effect that flocculation declines strengthens.And containing a certain amount of mineral in above-mentioned attapulgite, montmorillonite, chitin carrier, when being effectively scattered in waste water, the cation exchange capacity (CEC) himself having plays positive assosting effect in flocculation process, chitosan is macromolecule cation flocculant, playing its net in the treatment of waste water to catch and build bridge function, adsorption effect obtains and improves.
Detailed description of the invention:
Embodiment 1
A kind of biochemical preparation for administering glutamic acid fermentation sewage, it is characterised in that include physical absorbent and complex microorganism preparations.
Described physical absorbent is: according to the mass ratio mixing that forsterite powder, conch meal, crushed crude pearlite, pore creating material mass ratio are 5:2:2:3; stir and be placed in comminutor; add compound 22-25%(weight) water, pelletize, obtaining particle diameter is 3～5mmSphericalGreen compact；It is dried 20h under the conditions of 100 DEG C, under the conditions of 980 DEG C, calcines 1h, obtain physical absorbent.
Described complex microorganism preparations includes the raw material of following weight portion:
Azotobacter chroococcum 6 parts, Rhodococcus fascians 4 parts, bacillus amyloliquefaciens 4 parts, Clostridium papyrosolvens 3 parts, green ochre penicillium sp 3 parts, pseudomonas 3 parts, Bacillus cercus 2 parts.
Described azotobacter chroococcum is (Azotobacter chroococcum) CGMCC3768(CN102021118)
Described Rhodococcus fascians be Rhodococcus fascians (Rhodococcus sp.) CGMCC NO.6924(sees CN104140935A)；
Described bacillus amyloliquefaciens be (Bacillus amyloliquefaciens) ATCC 23843；
Described Clostridium papyrosolvens be (Clostridium papyrosolvens) ATCC 700395；
Described green ochre penicillium sp is (penicillium ochrochlorron) CGMCC
NO.4390(CN102174411)；
Described pseudomonas be (Pseudomonas stutzeri) CCTCC NO.2012281 (CN102876617)；
Said waxy bacillus cereus is (bacillus cereus) CGMCC NO.3836 (CN102899277)
By above azotobacter chroococcum, Rhodococcus fascians, bacillus amyloliquefaciens, Clostridium papyrosolvens, green ochre penicillium sp, pseudomonas, Bacillus cercus, all control 1 × 10 according to cellar culture concentration7Individual/gram, the bacterium solution cultivated is mixed to get liquid bacterial agent according to part by weight；
The preparation method of described complex microorganism preparations is, takes aforesaid liquid microbial inoculum and mixes with carrier stirring,
According to microbial inoculum: carrier is the weight ratio mixing of 1:1.It is dried: will mix material and be dried, baking temperature is 20-50 DEG C, and dried water content is 20-30%；Inspection, packaging: checking by quality standard, finished product is packed by weight, obtains biological preparation.
Described adsorbent is made up of the raw material of following weight proportioning: attapulgite 3 parts, montmorillonite 3 parts, chitosan 2 parts, and above-mentioned attapulgite, montmorillonite, chitosan are 100 mesh.
Utilize the method that above-mentioned preparation carries out glutamic acid fermentation waste water process, it is characterised in that comprise the steps:
(1) by glutamic acid fermentation waste water after grid, entering setting pot, the sewage through girt-water separation enters primary sedimentation pond, by preliminary sedimentation tank,Promote the buoyance lift of oils and fats in waste water, reduce the content of float；
(2) physical absorbent is prepared；
(3) according to the addition of sewage per ton interpolation 0.5kg, physical absorbent is added in sewage in the waste water processed through preliminary sedimentation tank enters Aeration tank, Aeration tank；
After physical absorbent processes, part NH3-N, sulfate radical are removed；
(4) waste water through Air Exposure enters sedimentation tank, and waste water per ton adds complex microorganism preparations 15-20 gram every time, and sewage residence time in sedimentation tank controls to be to discharge after 24 hours.
Embodiment 2
A kind of biochemical preparation for administering glutamic acid fermentation sewage, it is characterised in that include physical absorbent and complex microorganism preparations.
Described physical absorbent is: according to the mass ratio mixing that forsterite powder, conch meal, crushed crude pearlite, pore creating material mass ratio are 5:2:2:3; stir and be placed in comminutor; add compound 22-25%(weight) water, pelletize, obtaining particle diameter is 3～5mmSphericalGreen compact；It is dried 20h under the conditions of 100 DEG C, under the conditions of 980 DEG C, calcines 1h, obtain physical absorbent.
Described complex microorganism preparations includes the raw material of following weight portion:
Azotobacter chroococcum 8 parts, Rhodococcus fascians 6 parts, bacillus amyloliquefaciens 6 parts, Clostridium papyrosolvens 5 parts, green ochre penicillium sp 5 parts, pseudomonas 4 parts, Bacillus cercus 3 parts.
Described azotobacter chroococcum is (Azotobacter chroococcum) CGMCC3768(CN102021118)
Described Rhodococcus fascians be Rhodococcus fascians (Rhodococcus sp.) CGMCC NO.6924(sees CN104140935A)；
Described bacillus amyloliquefaciens be (Bacillus amyloliquefaciens) ATCC 23843；
Described Clostridium papyrosolvens be (Clostridium papyrosolvens) ATCC 700395；
Described green ochre penicillium sp is (penicillium ochrochlorron) CGMCC
NO.4390(CN102174411)；
Described pseudomonas be (Pseudomonas stutzeri) CCTCC NO.2012281 (CN102876617)；
Said waxy bacillus cereus is (bacillus cereus) CGMCC NO.3836 (CN102899277)
By above azotobacter chroococcum, Rhodococcus fascians, bacillus amyloliquefaciens, Clostridium papyrosolvens, green ochre penicillium sp, pseudomonas, Bacillus cercus, all control 1 × 10 according to cellar culture concentration7Individual/gram, the bacterium solution cultivated is mixed to get liquid bacterial agent according to part by weight；
The preparation method of described complex microorganism preparations is, takes aforesaid liquid microbial inoculum and mixes with adsorbent stirring,
According to microbial inoculum: carrier is the weight ratio mixing of 1:1.It is dried: will mix material and be dried, baking temperature is 20-50 DEG C, and dried water content is 20-30%；Inspection, packaging: checking by quality standard, finished product is packed by weight, obtains biological preparation.
Described carrier is made up of the raw material of following weight proportioning: attapulgite 3 parts, montmorillonite 3 parts, chitosan 2 parts, and above-mentioned attapulgite, montmorillonite, chitosan are 100 mesh.
Utilize the method that above-mentioned biochemical preparation carries out glutamic acid fermentation waste water process, it is characterised in that comprise the steps:
(1) by glutamic acid fermentation waste water after grid, entering setting pot, the sewage through girt-water separation enters primary sedimentation pond, by preliminary sedimentation tank,Promote the buoyance lift of oils and fats in waste water, reduce the content of float；
(2) physical absorbent is prepared；
(3) according to the addition of sewage per ton interpolation 0.5kg, physical absorbent is added in sewage in the waste water processed through preliminary sedimentation tank enters Aeration tank, Aeration tank；
After physical absorbent processes, part NH3-N, sulfate radical are removed；
(4) waste water through Air Exposure enters sedimentation tank, and regulation pH is 6.5-7.0, and waste water per ton adds complex microorganism preparations 15-20 gram every time, and sewage residence time in sedimentation tank controls to be to discharge after 24 hours.
Embodiment 3 processes waste water example effects
Take abundant rich workshop extracting glutamic acid waste water, enter sewage disposal system, sampling and measuring COD, ammonia nitrogen, total nitrogen data according to embodiment 1-2 method bottom material respectively；
Matched group 1 compared with Example 1, without physical absorption；Compare 2 groups compared with Example 1 without complex microorganism preparations.Sampling and measuring COD, ammonia nitrogen, SS and clarity test data such as table 1 below:
Table 1
| COD clearance | Ammonia nitrogen removal frank | SS clearance | Clarity | |
| Compare 1 group | 43.8% | 35.2% | 50.7% | 11cm |
| Compare 2 groups | 46.4% | 61.3% | 51.4% | 9cm |
| Embodiment 1 group | 99.6% | 99.3% | 99.1% | 27cm |
| Embodiment 2 groups | 99.3% | 99.2% | 99.3% | 27cm |
Listed above is only the optimal specific embodiment of the present invention.It is clear that the invention is not restricted to above example, it is also possible to there are many deformation.All deformation that those of ordinary skill in the art can directly derive from present disclosure or associate, are all considered as protection scope of the present invention.
Claims (8)
1. the biochemical preparation being used for administering glutamic acid fermentation sewage, it is characterised in that include physical absorbent and complex microorganism preparations.
Preparation the most according to claim 1; it is characterized in that; the preparation method of described physical absorbent is: according to the mass ratio mixing that forsterite powder, conch meal, crushed crude pearlite, pore creating material mass ratio are 5:2:2:3; stir and be placed in comminutor; add compound 22-25%(w/w) water; pelletize, obtains the green compact that particle diameter is 3～5mm；Then it is dried 20h under the conditions of 100 DEG C, under the conditions of 980 DEG C, finally calcines 1h, to obtain final product.
Preparation the most according to claim 1, it is characterised in that described complex microorganism preparations includes the raw material of following weight portion:
Azotobacter chroococcum 6-8 part, Rhodococcus fascians 4-6 part, bacillus amyloliquefaciens 4-6 part, Clostridium papyrosolvens 3-5 part, green ochre penicillium sp 3-5 part, pseudomonas 3-4 part, Bacillus cercus 2-3 part.
4. according to the preparation described in claim 1-3, it is characterised in that
Described azotobacter chroococcum is (Azotobacter
chroococcum)CGMCC NO.3768；
Described Rhodococcus fascians is (Rhodococcus sp.) CGMCC NO.6924；；
Described bacillus amyloliquefaciens is (Bacillus amyloliquefaciens) ATCC 23843；
Described Clostridium papyrosolvens is (Clostridium papyrosolvens) ATCC 700395；
Described green ochre penicillium sp is (penicillium ochrochlorron) CGMCC NO.4390；
Described pseudomonas is (Pseudomonas stutzeri) CCTCC NO.2012281；
Said waxy bacillus cereus is (bacillus cereus) CGMCC NO.3836.
5. according to the preparation described in claim 1-4, it is characterized in that, the preparation method of described complex microorganism preparations is: by azotobacter chroococcum, Rhodococcus fascians, bacillus amyloliquefaciens, Clostridium papyrosolvens, green ochre penicillium sp, pseudomonas, Bacillus cercus, cultivate respectively to concentration be 1 × 107Individual/gram, the bacterium solution cultivated is mixed to get liquid bacterial agent according to part by weight；
According to liquid bacterial agent: carrier is the weight ratio mixing of 1:1, is drying to obtain.
6. according to the preparation described in claim 1-5, it is characterised in that described carrier is made up of the raw material of following weight proportioning: attapulgite 3 parts, montmorillonite 3 parts, chitosan 2 parts.
7. the purposes that preparation described in claim 1-6 processes for waste water.
Purposes the most according to claim 7, it is characterised in that described waste water is glutamic acid fermentation waste water.
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| CN106967644A (en) * | 2017-04-19 | 2017-07-21 | 卢松 | A kind of biological agent for handling glutamic acid fermentation sewage |
| CN107162342A (en) * | 2017-06-28 | 2017-09-15 | 蒋小萍 | A kind of method that utilization biochemical technology repairs dyeing waste water |
| CN107445391A (en) * | 2017-04-19 | 2017-12-08 | 内蒙古阜丰生物科技有限公司 | A kind of method that Amino Acid Fermentation Wastewater is repaired using biochemical technology |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106967644A (en) * | 2017-04-19 | 2017-07-21 | 卢松 | A kind of biological agent for handling glutamic acid fermentation sewage |
| CN107445391A (en) * | 2017-04-19 | 2017-12-08 | 内蒙古阜丰生物科技有限公司 | A kind of method that Amino Acid Fermentation Wastewater is repaired using biochemical technology |
| CN107445391B (en) * | 2017-04-19 | 2020-04-10 | 内蒙古阜丰生物科技有限公司 | Method for repairing amino acid fermentation wastewater by using biochemical technology |
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| CN107162342A (en) * | 2017-06-28 | 2017-09-15 | 蒋小萍 | A kind of method that utilization biochemical technology repairs dyeing waste water |
| CN107162342B (en) * | 2017-06-28 | 2020-12-18 | 杭州富阳飞博科技有限公司 | Method for repairing printing and dyeing wastewater by using biochemical technology |
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