CN103663870A - Sewage processing method for food entrepreneurs - Google Patents
Sewage processing method for food entrepreneurs Download PDFInfo
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- CN103663870A CN103663870A CN201310661280.6A CN201310661280A CN103663870A CN 103663870 A CN103663870 A CN 103663870A CN 201310661280 A CN201310661280 A CN 201310661280A CN 103663870 A CN103663870 A CN 103663870A
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- 238000003672 processing method Methods 0.000 title abstract 3
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- 238000000746 purification Methods 0.000 claims description 49
- 239000003795 chemical substances by application Substances 0.000 claims description 48
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 28
- 238000006386 neutralization reaction Methods 0.000 claims description 25
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- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 18
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 15
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 15
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 15
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 14
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical compound [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 claims description 14
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 12
- 238000010521 absorption reaction Methods 0.000 claims description 12
- 239000003513 alkali Substances 0.000 claims description 12
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 10
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 10
- 230000003647 oxidation Effects 0.000 claims description 9
- 238000007254 oxidation reaction Methods 0.000 claims description 9
- 239000002245 particle Substances 0.000 claims description 8
- 108010011619 6-Phytase Proteins 0.000 claims description 6
- 241000894006 Bacteria Species 0.000 claims description 6
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- 108010029541 Laccase Proteins 0.000 claims description 6
- 102000003820 Lipoxygenases Human genes 0.000 claims description 6
- 108090000128 Lipoxygenases Proteins 0.000 claims description 6
- 239000001569 carbon dioxide Substances 0.000 claims description 6
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 6
- 229940106157 cellulase Drugs 0.000 claims description 6
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 230000003750 conditioning effect Effects 0.000 claims description 6
- 229940088598 enzyme Drugs 0.000 claims description 6
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- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 5
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- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 5
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- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Removal Of Specific Substances (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The invention belongs to the technical field of environmental protection, and specifically relates to a sewage processing method for food entrepreneurs. The method comprises the following steps: (1) neutralizing; (2) flocculating; (3) oxidizing; (4) treating with biological enzymes; (5) absorbing; (6) carrying out an anaerobic treatment; and finally discharging the processed wastewater. The sewage processing method has a good processing effect on wastewater generated by food entrepreneurs. The method first carries out a physical flocculation and settlement treatment so as to remove the impurities which can settle in the wastewater, then carries out a microorganism treatment on the wastewater to further process the wastewater so as to make the wastewater indexes such as pH value, chrominance, COD, BOD5, sulfide content, nitride content, and organic phosphorous content be in the prescribed range, thus achieves the goal of purifying water body, and assists the safe wastewater discharging for food entrepreneurs.
Description
Technical field
The invention belongs to environmental technology field, be specifically related to the method for food enterprise sewage disposal.
Background technology
In food production, the cleaning of various raw materials pretreatment and equipment etc. will produce a large amount of waste water, to environment, so, wastewater treatment is one of main task of food factories design, China's industrial wastewater discharge standard is that on January 1st, 1974 is tentative, revision in 1988 is < < sewage drainage standard > > replacement GB54-1973(waste water part), within 1996, again revise as < < integrated wastewater discharge standard > > (GB8978-1996), on January 1st, 1998 comes into effect.China's industrial wastewater discharge standard regulation:
The water quality of the water source of tap water and landscape excursion district, forbids to have any pollution;
Fishery and agricultural water, guarantee the growth conditions of plant, guarantees that the remaining toxicity of objectionable impurities in animal and plant body must not surpass food sanitation standard;
The water source of process water, must meet the requirement of industrial process waters.
In emission standard, to containing the highest permissible discharge concentration of objectionable impurities in trade effluent, make strict regulation.The highest permissible discharge concentration of objectionable impurities is divided into two classes: the first kind, can in environment or animal and plant body, put aside, HUMAN HEALTH be produced to the objectionable impurities of long-range impact, the trade effluent that contains this class objectionable impurities, at discharge of wastewater mouth place, should emission standard up to specification could discharge.
Equations of The Second Kind, its long-range impact is less than first kind objectionable impurities, that is to say, in the long run considers, and its toxic action is lower than the toxicity of first kind material, and the concentration of narmful substance at its factory's relief outlet place should meet the requirements prescribed, and could discharge.
National sewage comprehensive emission standard has not only been stipulated the highest permissible discharge concentration of objectionable impurities in trade effluent, and has stipulated the highest permission water displacement of part industry.
The parameter of the pollution level of detection water quality is as follows:
Detect the pollution level of water quality, the highest permissible discharge concentration of the one or two class in regulation, also have a lot of indexs, sum up and can be divided into following three classes:
(1) pollution parameters of physics aspect: as transparency, turbidity, color, suspended substance, temperature, stink, taste, evaporation residue and specific conductivity etc.;
(2) pollution parameters of chemical aspect: as pH value, acidity, basicity, hardness, biochemical oxygen demand (BOD), chemical oxygen demand (COD), dissolved oxygen, total organic carbon, total oxygen demand, oil-contg, nutrient content and harmful and noxious substance content etc.;
(3) pollution parameters of biological aspect: as virus, coliform number, bacterial count, toxicity of fish experiment and aquatic organism analysis etc.
The treatment process of sewage mainly contains following several:
The physical treatment method of waste water:
Physical treatment method is to utilize physical action; suspended substance in waste water, oils, solubility salt and other solid are separated; thereby protection subsequent disposal facility can normally move; reduce other treatment facility load, the physical treatment method of waste water is divided into two classes: every filter (as barrier, screen cloth, filtration, centrifugal etc.) and separated (as precipitation, floating etc.).
The chemical treatment method of waste water: the chemical treatment method of waste water is to add certain chemical substance in waste water, utilize chemical reaction separated, reclaim some pollution substance in waste water, or making it be converted into harmless material, its processing object is mainly inorganic or organic (being difficult to biodegradable) dissolved substance or the colloidalmaterial in water and waste water.Main method has chemical coagulation, neutralization, chemical precipitation and oxidation reduction process etc.
The bioremediation of waste water:
At occurring in nature, exist the microorganism of a large amount of dependence organism lives, they not only can decompose the organism that oxidation is general, and are translated into stable compound, and can also transform toxic organic compound.In fact, in the harmless process of trade effluent, not only utilize microbiological treatment organic poison, as phenol, aldehyde, nitrile etc., the inorganic toxic material also forming for the treatment of microbial nutrition element, as prussiate, sulfide etc., these materials itself are to the toxic effect of microorganism, but form the element of these materials, some is that microbial nutrition is required, therefore they have duality to microorganism, and by the control of concentration, poisonous substance can become nutriment.
Biological treatment is exactly to utilize microorganism to decompose this function of oxidation of organic compounds, and take certain artificial measures, creation has the environment that utilizes microorganism growth, breeding, microorganism is bred in a large number, the method of decomposing a kind of wastewater treatment of oxidation of organic compounds efficiency to improve it, biological treatment is divided into the aerobic and large class of anaerobism two, and aerobe is processed the supply that needs aerobic, and anaerobic biological treatment needs to guarantee oxygen-free environment.
Summary of the invention
In order to solve above-mentioned technical problem, the invention provides the method for the food enterprise sewage disposal that a kind for the treatment of effect is good.
The method of food enterprise sewage disposal of the present invention is to realize by following technical scheme:
The method of food enterprise sewage disposal, comprises following step:
(1) neutralization: food wastewater is introduced in neutralization tank, measured the pH value in waste water,
If it is acid that waste water is: drop into alkali in waste water;
If waste water is alkalescence: or to inject in waste water compression carbon dioxide, to waste water, blast stack gas, to waste water, drop into acid or acid waste water;
Neutralization wastewater pH is afterwards reached between 6.5-7.5;
(2) flocculation: drop into water purification agent in the waste water after neutralization, described water purification agent is physics water purification agent, and described physics water purification agent is diatomite, calcium aluminate, polymerize aluminum chloride; Adopt above-mentioned water purification agent to water conditioning, its concrete steps are: above-mentioned water purification agent is added to the water, stirs, the part by weight of water purification agent and water body is 1:60-80, stir standingly after 30-60 minute, filter above-mentioned water body, removal filter residue;
(3) oxidation: pass into hydrogen peroxide in waste water, waste water is oxidized, the weight ratio of the amount of described hydrogen peroxide and waste water water body is 1:150-300;
(4) cellulase treatment: add catalase, laccase, lipoxygenase, phytase in waste water, the 1/300-1/200 that is total up to waste water water body of four kinds of above-mentioned enzymes;
(5) absorption: drop into gac in waste water, impurity, metal ion, bacterium in absorption waste water;
(6) anaerobic treatment: waste water is introduced to up-flow anaerobic sludge blanket, anaerobic treatment;
Waste water after above-mentioned processing is discharged.
Above-mentioned acid is any in acetic acid, oxalic acid, citric acid, hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid.
Above-mentioned alkali is any in sodium hydroxide, potassium hydroxide, calcium hydroxide;
The ratio of weight and number of above-mentioned diatomite, calcium aluminate, polymerize aluminum chloride is 1-4:1:1.
The ratio of weight and number of above-mentioned diatomite, calcium aluminate, polymerize aluminum chloride is 3:1:1.
In above-mentioned step (2), the part by weight of water purification agent and water body is 1:70.
The particle diameter of gac is 20-60 order.
Preferably, the particle diameter of gac is 40 orders.
Beneficial effect of the present invention is, the waste water that adopts above-mentioned method to produce food enterprise is processed, its treatment effect is good, first physics flocculating settling, except the impurity of sedimentation that deenergizes, then by microorganism, water quality is further processed, made pH, colourity, COD, BOD5, sulfide, the nitride of water body, the content of organophosphorus is all down in specified standards, thereby reach the object of water body purification, be conducive to the waste water safety dumping of food enterprise.
Embodiment
Below in conjunction with specific embodiment, the present invention is further described, so that those skilled in the art more understands the present invention, but does not therefore limit the present invention.
Embodiment 1
The method of food enterprise sewage disposal, comprises following step:
(1) neutralization: food wastewater is introduced in neutralization tank, measured the pH value in waste water,
If it is acid that waste water is: drop into alkali in waste water;
If waste water is alkalescence: or to inject in waste water compression carbon dioxide, to waste water, blast stack gas, to waste water, drop into acid or acid waste water;
Make neutralization wastewater pH afterwards reach 7.0 left and right;
(2) flocculation: drop into water purification agent in the waste water after neutralization, described water purification agent is physics water purification agent, and described physics water purification agent is diatomite, calcium aluminate, polymerize aluminum chloride; Adopt above-mentioned water purification agent to water conditioning, its concrete steps are: above-mentioned water purification agent is added to the water, stirs, the part by weight of water purification agent and water body is 1:70, stir standingly after 45 minutes, filter above-mentioned water body, removal filter residue;
(3) oxidation: pass into hydrogen peroxide in waste water, waste water is oxidized, the weight ratio of the amount of described hydrogen peroxide and waste water water body is 1:240;
(4) cellulase treatment: in waste water, add catalase, laccase, lipoxygenase, phytase, four kinds of above-mentioned enzymes be total up to 1/250 of waste water water body;
(5) absorption: drop into gac in waste water, impurity, metal ion, bacterium in absorption waste water;
(6) anaerobic treatment: waste water is introduced to up-flow anaerobic sludge blanket, anaerobic treatment;
Waste water after above-mentioned processing is discharged.
Above-mentioned acid is oxalic acid.
Above-mentioned alkali is sodium hydroxide;
The ratio of weight and number of above-mentioned diatomite, calcium aluminate, polymerize aluminum chloride is 3:1:1.
In above-mentioned step (2), the part by weight of water purification agent and water body is 1:70.
The particle diameter of gac is 40 orders.
Embodiment 2
The method of food enterprise sewage disposal, comprises following step:
(1) neutralization: food wastewater is introduced in neutralization tank, measured the pH value in waste water,
If it is acid that waste water is: drop into alkali in waste water;
If waste water is alkalescence: or to inject in waste water compression carbon dioxide, to waste water, blast stack gas, to waste water, drop into acid or acid waste water;
Make neutralization wastewater pH afterwards reach 6.5 left and right;
(2) flocculation: drop into water purification agent in the waste water after neutralization, described water purification agent is physics water purification agent, and described physics water purification agent is diatomite, calcium aluminate, polymerize aluminum chloride; Adopt above-mentioned water purification agent to water conditioning, its concrete steps are: above-mentioned water purification agent is added to the water, stirs, the part by weight of water purification agent and water body is 1:60-80, stir standingly after 30-60 minute, filter above-mentioned water body, removal filter residue;
(3) oxidation: pass into hydrogen peroxide in waste water, waste water is oxidized, the weight ratio of the amount of described hydrogen peroxide and waste water water body is 1:150;
(4) cellulase treatment: in waste water, add catalase, laccase, lipoxygenase, phytase, four kinds of above-mentioned enzymes be total up to 1/300 of waste water water body;
(5) absorption: drop into gac in waste water, impurity, metal ion, bacterium in absorption waste water;
(6) anaerobic treatment: waste water is introduced to up-flow anaerobic sludge blanket, anaerobic treatment;
Waste water after above-mentioned processing is discharged.
Above-mentioned acid is any in acetic acid, oxalic acid, citric acid, hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid.
Above-mentioned alkali is any in sodium hydroxide, potassium hydroxide, calcium hydroxide;
The ratio of weight and number of above-mentioned diatomite, calcium aluminate, polymerize aluminum chloride is 1:1:1.
In above-mentioned step (2), the part by weight of water purification agent and water body is 1:70.
The particle diameter of gac is 20 orders.
Embodiment 3
The method of food enterprise sewage disposal, comprises following step:
(1) neutralization: food wastewater is introduced in neutralization tank, measured the pH value in waste water,
If it is acid that waste water is: drop into alkali in waste water;
If waste water is alkalescence: or to inject in waste water compression carbon dioxide, to waste water, blast stack gas, to waste water, drop into acid or acid waste water;
Make neutralization wastewater pH afterwards reach 7.5 left and right;
(2) flocculation: drop into water purification agent in the waste water after neutralization, described water purification agent is physics water purification agent, and described physics water purification agent is diatomite, calcium aluminate, polymerize aluminum chloride; Adopt above-mentioned water purification agent to water conditioning, its concrete steps are: above-mentioned water purification agent is added to the water, stirs, the part by weight of water purification agent and water body is 1:80, stir standingly after 60 minutes, filter above-mentioned water body, removal filter residue;
(3) oxidation: pass into hydrogen peroxide in waste water, waste water is oxidized, the weight ratio of the amount of described hydrogen peroxide and waste water water body is 1:300;
(4) cellulase treatment: in waste water, add catalase, laccase, lipoxygenase, phytase, four kinds of above-mentioned enzymes be total up to 1/200 of waste water water body;
(5) absorption: drop into gac in waste water, impurity, metal ion, bacterium in absorption waste water;
(6) anaerobic treatment: waste water is introduced to up-flow anaerobic sludge blanket, anaerobic treatment;
Waste water after above-mentioned processing is discharged.
Above-mentioned acid is any in acetic acid, oxalic acid, citric acid, hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid.
Above-mentioned alkali is any in sodium hydroxide, potassium hydroxide, calcium hydroxide;
The ratio of weight and number of above-mentioned diatomite, calcium aluminate, polymerize aluminum chloride is 4:1:1.
In above-mentioned step (2), the part by weight of water purification agent and water body is 1:70.
The particle diameter of gac is 60 orders.
Embodiment 4
The method of food enterprise sewage disposal, comprises following step:
(1) neutralization: food wastewater is introduced in neutralization tank, measured the pH value in waste water,
If it is acid that waste water is: drop into alkali in waste water;
If waste water is alkalescence: or to inject in waste water compression carbon dioxide, to waste water, blast stack gas, to waste water, drop into acid or acid waste water;
Make neutralization wastewater pH afterwards reach 6.8 left and right;
(2) flocculation: drop into water purification agent in the waste water after neutralization, described water purification agent is physics water purification agent, and described physics water purification agent is diatomite, calcium aluminate, polymerize aluminum chloride; Adopt above-mentioned water purification agent to water conditioning, its concrete steps are: above-mentioned water purification agent is added to the water, stirs, the part by weight of water purification agent and water body is 1:60-80, stir standingly after 30-60 minute, filter above-mentioned water body, removal filter residue;
(3) oxidation: pass into hydrogen peroxide in waste water, waste water is oxidized, the weight ratio of the amount of described hydrogen peroxide and waste water water body is 1:200;
(4) cellulase treatment: in waste water, add catalase, laccase, lipoxygenase, phytase, four kinds of above-mentioned enzymes be total up to 1/200 of waste water water body;
(5) absorption: drop into gac in waste water, impurity, metal ion, bacterium in absorption waste water;
(6) anaerobic treatment: waste water is introduced to up-flow anaerobic sludge blanket, anaerobic treatment;
Waste water after above-mentioned processing is discharged.
Above-mentioned acid is any in acetic acid, oxalic acid, citric acid, hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid.
Above-mentioned alkali is any in sodium hydroxide, potassium hydroxide, calcium hydroxide;
The ratio of weight and number of above-mentioned diatomite, calcium aluminate, polymerize aluminum chloride is 2:1:1.
In above-mentioned step (2), the part by weight of water purification agent and water body is 1:70.
The particle diameter of gac is 40 orders.
Claims (7)
1. a method for food enterprise sewage disposal, comprises following step:
(1) neutralization: food wastewater is introduced in neutralization tank, measured the pH value in waste water,
If it is acid that waste water is: drop into alkali in waste water;
If waste water is alkalescence: or to inject in waste water compression carbon dioxide, to waste water, blast stack gas, to waste water, drop into acid or acid waste water;
Neutralization wastewater pH is afterwards reached between 6.5-7.5;
(2) flocculation: drop into water purification agent in the waste water after neutralization, described water purification agent is physics water purification agent, and described physics water purification agent is diatomite, calcium aluminate, polymerize aluminum chloride; Adopt above-mentioned water purification agent to water conditioning, its concrete steps are: above-mentioned water purification agent is added to the water, stirs, the part by weight of water purification agent and water body is 1:60-80, stir standingly after 30-60 minute, filter above-mentioned water body, removal filter residue;
(3) oxidation: pass into hydrogen peroxide in waste water, waste water is oxidized, the weight ratio of the amount of described hydrogen peroxide and waste water water body is 1:150-300;
(4) cellulase treatment: add catalase, laccase, lipoxygenase, phytase in waste water, the 1/300-1/200 that is total up to waste water water body of four kinds of above-mentioned enzymes;
(5) absorption: drop into gac in waste water, impurity, metal ion, bacterium in absorption waste water;
(6) anaerobic treatment: waste water is introduced to up-flow anaerobic sludge blanket, anaerobic treatment;
Waste water after above-mentioned processing is discharged.
2. the method for a kind of food enterprise sewage disposal as claimed in claim 1, is characterized in that, described acid is any in acetic acid, oxalic acid, citric acid, hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid.
3. the method for a kind of food enterprise sewage disposal as claimed in claim 1, is characterized in that, described alkali is any in sodium hydroxide, potassium hydroxide, calcium hydroxide;
A kind of method for purifying water as claimed in claim 1, is characterized in that, the ratio of weight and number of described diatomite, calcium aluminate, polymerize aluminum chloride is 1-4:1:1.
4. a kind of method for purifying water as claimed in claim 1, is characterized in that, the ratio of weight and number of described diatomite, calcium aluminate, polymerize aluminum chloride is 3:1:1.
5. a kind of method for purifying water as claimed in claim 1, is characterized in that, in described step (2), the part by weight of water purification agent and water body is 1:70.
6. a kind of method for purifying water as claimed in claim 1, is characterized in that, the particle diameter of described gac is 20-60 order.
7. a kind of method for purifying water as claimed in claim 1, is characterized in that, the particle diameter of described gac is 40 orders.
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| CN104529054A (en) * | 2014-11-26 | 2015-04-22 | 山东永泰化工有限公司 | Rubber accelerant NOBS production wastewater treatment method |
| CN104860481A (en) * | 2015-05-23 | 2015-08-26 | 张家港市山牧新材料技术开发有限公司 | Method for treating sewage of food enterprise |
| CN105152416A (en) * | 2015-10-14 | 2015-12-16 | 周智 | Method for treating liquid dung in pig farms |
| CN105271620A (en) * | 2015-11-13 | 2016-01-27 | 西华大学 | Method for efficiently treating bamboo shoot processing wastewater |
| CN106348523A (en) * | 2016-08-28 | 2017-01-25 | 潘纪鸿 | Method for treating waste water from food industry |
| CN117566845A (en) * | 2024-01-17 | 2024-02-20 | 中国农业科学院农业环境与可持续发展研究所 | Method for treating organic waste liquid |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104529054A (en) * | 2014-11-26 | 2015-04-22 | 山东永泰化工有限公司 | Rubber accelerant NOBS production wastewater treatment method |
| CN104529054B (en) * | 2014-11-26 | 2016-02-17 | 山东永泰化工有限公司 | Rubber accelerator NOBS production wastewater treatment method |
| CN104860481A (en) * | 2015-05-23 | 2015-08-26 | 张家港市山牧新材料技术开发有限公司 | Method for treating sewage of food enterprise |
| CN105152416A (en) * | 2015-10-14 | 2015-12-16 | 周智 | Method for treating liquid dung in pig farms |
| CN105271620A (en) * | 2015-11-13 | 2016-01-27 | 西华大学 | Method for efficiently treating bamboo shoot processing wastewater |
| CN106348523A (en) * | 2016-08-28 | 2017-01-25 | 潘纪鸿 | Method for treating waste water from food industry |
| CN117566845A (en) * | 2024-01-17 | 2024-02-20 | 中国农业科学院农业环境与可持续发展研究所 | Method for treating organic waste liquid |
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