CN206886900U - A kind of brewed spirit Waste Water Treatment - Google Patents
A kind of brewed spirit Waste Water Treatment Download PDFInfo
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- CN206886900U CN206886900U CN201720441300.2U CN201720441300U CN206886900U CN 206886900 U CN206886900 U CN 206886900U CN 201720441300 U CN201720441300 U CN 201720441300U CN 206886900 U CN206886900 U CN 206886900U
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Abstract
A kind of brewed spirit Waste Water Treatment provided by the utility model, the Waste Water Treatment are made up of grille well, regulating reservoir, coagulative precipitation tank, intermediate pool, upflow anaerobic sludge blanket reactor, one-level anoxic pond, one-level Aerobic Pond, two level anoxic pond, two level Aerobic Pond, second pond, the sterilization pool being sequentially connected.By brewed spirit Waste Water Treatment provided by the utility model, process operation expense is low, and treatment effect is stable, and final outflow water indices are below the waste water after processing after testing《Fermentation alcohol and Liquor-making industry pollution discharge standard》（GB27631—2011）Requirement, can directly to sewage treatment plant be discharged into advance a step processing.
Description
Technical field
It the utility model is related to field of waste water treatment, more particularly to a kind of brewed spirit Waste Water Treatment.
Background technology
China liquor culture is of extensive knowledge and profound scholarship, alcohol product as and meanwhile meet the special of people's material requisite and spiritual demand
Commodity are connected closely with the culture in its place of production.Drink and be not only a kind of material enjoyment, even more people give expression to one's sentiment, promote friendship,
Expand the Emotion carrier of contacts, be indispensable adjustment in interpersonal relationships.According to statistics, the nationwide above white wine in 2015
Enterprise 1563, the national kilolitre of white wine total output 1312.80 ten thousand, 5558.86 hundred million yuan of income from sales；White wine commodity add up spoken parts in an opera
The kilolitre of wine quantity 16188.83, add up 4.49 hundred million dollars of total export.But liquor production is creating material wealth, is promoting national warp
Substantial amounts of waste water can be also produced while Ji development.
The white wine raw material in China is mostly based on wheat, corn, sorghum, and caused waste water mainly includes in brewing process
Caused distillation residual water, bent box rinse water, the bent waste water of print, distillers ' grains waste liquid, fermentation vat ooze draining, grain leaching in production process
The waste water such as soaked, distillation cooling water and equipment cleaning.Such waste water main component is amino acid, low-carbon alcohols（Ethanol and amylalcohol etc.）
And aliphatic acid, belong to high concentrated organic wastewater.Such waste water has COD（COD）Concentration is high, solid suspension（SS）
Content is big, biodegradability is strong and the features such as complicated component.At present, domestic white wine wastewater processing is frequently with anaerobic-aerobic biochemical process
Handled.But still lack economical rationality at this stage, the group technology of technology maturation handles such waste water.
Therefore, it is low that a kind of good denitrogenation and dephosphorization effect, investment and operating cost are found, suit measures to local conditions, operational administrative it is simple, and
The group technology of certain economy and environmental benefit can be produced, problem of environmental pollution is particularly to caused by solving scale white wine wastewater
It is important.
The content of the invention
In order to solve the above technical problems, the utility model provides a kind of brewed spirit Waste Water Treatment, the waste water
Processing system by be sequentially connected grille well, regulating reservoir, coagulative precipitation tank, intermediate pool, upflow anaerobic sludge blanket reactor,
One-level anoxic pond, one-level Aerobic Pond, two level anoxic pond, two level Aerobic Pond, second pond and sterilization pool composition.
Wherein, the coagulative precipitation tank, the upflow anaerobic sludge blanket reactor and the second pond respectively with sludge
Concentration basin is connected, and the sludge concentration tank is connected with filter press.
Preferably, described filter press is chamber-type press filter or plate and frame filter press.
Wherein,
The equal Hengshui of regulating reservoir is promoted to by elevator pump after vinasse and bulky grain suspension in the grille well removal waste water
Matter and water；
Waste water in the regulating reservoir flows into coagulative precipitation tank and removes fine suspension and colloidal solid；
Waste water outflow in the coagulative precipitation tank enters intermediate pool and stores temporarily and ensure subsequent technique after regulating pondage
Waste water supply；
The waste water of the intermediate pool is promoted to upflow anaerobic sludge blanket reactor degradation of organic substances by elevator pump, together
When kill pathogenic bacteria；
It is aerobic that waste water in the upflow anaerobic sludge blanket reactor flows into the one-level anoxic pond, the one-level successively
Pond, the two level anoxic pond and the two level Aerobic Pond remove the nitrogen phosphorus and organic matter in waste water；
The sterilization pool is flowed into after the waste water inflow second pond progress separation of solid and liquid of the two level Aerobic Pond outflow to enter
Row is discharged into sewage treatment plant after disinfecting；
The coagulative precipitation tank, the upflow anaerobic sludge blanket reactor and sludge caused by the second pond are discharged into dirt
Mud thickener, filled after being concentrated after filter press press filtration water removal.
Wherein, nitrification liquid is contained in the one-level Aerobic Pond and two level Aerobic Pond, the nitrification liquid in the one-level Aerobic Pond
It is partly refluxed to the one-level anoxic pond, the nitrification liquid in the two level Aerobic Pond is partly refluxed to the two level anoxic pond.
Wherein, the partial sludge in the sludge concentration tank is back to the one-level anoxic pond, keeps the one-level anoxic
Activated sludge concentration in pond.
Wherein, the filtrate of the supernatant liquor in the sludge concentration tank and the filter press is back to the regulating reservoir.
Wherein, coagulant and alkali are contained in the coagulative precipitation tank.
Wherein, described coagulant is polyacrylamide and aluminium polychloride.
Wherein, described alkali can be any one in sodium hydroxide, potassium hydroxide, sodium carbonate, calcium oxide and calcium carbonate
Kind or several combinations.
Wherein, the pH value of waste water is 7 ~ 8 in the coagulative precipitation tank.
The beneficial effects of the utility model：
A kind of brewed spirit Waste Water Treatment provided by the utility model, first aspect are closed by coagulating basin and sedimentation basin
Build, reduce floor space, reduce investment, the water of coagulating basin flows directly into settling zone by partition wall can improve precipitation separation effect
Fruit；In addition, adding coagulant polyacrylamide and aluminium polychloride in coagulative precipitation tank, polyacrylamide and polyaluminium are utilized
The absorption of aluminium and flocculation remove fine suspension and colloidal solid in waste water.
Second aspect handles waste water waste water by upflow anaerobic sludge blanket reactor, eliminates in waste water
Majority of organic pollutants, impact load of the water quality to subsequent technique is reduced, ensures the normal operation of subsequent biological treatment technique,
Caused a large amount of biogas can use as the energy；In addition, anaerobic digestion can kill substantial amounts of Escherichia coli, malignant bacteria
And fractionated viral, mitigate the processing load of follow-up sterilization pool.
The third aspect goes dephosphorization, biomembrance process removing by two-stage anoxic/aerobic tandem process processing using activated sludge
Nitrogen, for polyP bacteria and the different multiplication characteristics of denitrifier, by controlling sludge sludge age, hydraulic detention time, aerobic section to mix
The operational factors such as the reflux ratio of liquid overcome traditional handicraft existing deficiency, nitrate interference, sludge during denitrogenation dephosphorizing
The problem of sludge age is difficult to take into account denitrifier and polyP bacteria, realize high-efficient denitrification and dephosphorization.
By brewed spirit Waste Water Treatment provided by the utility model, process operation expense is low, and treatment effect is stable,
Final outflow water indices are below waste water after processing after testing《Fermentation alcohol and Liquor-making industry pollution discharge standard》
（GB27631—2011）Requirement, can directly to sewage treatment plant be discharged into advance a step processing.
Brief description of the drawings
In order to illustrate more clearly of the technical solution of the utility model, below by the accompanying drawing to being needed to use in embodiment
It is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present utility model, correspond to this
For the those of ordinary skill in field, on the premise of not paying creative work, other can also be obtained according to these accompanying drawings
Accompanying drawing.
Fig. 1 is the structural representation of white wine wastewater processing system provided by the utility model.
Embodiment
It is preferred embodiment of the present utility model below, it is noted that for those skilled in the art
For, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improvements and modifications
It is considered as the scope of protection of the utility model.
Waste water caused by the White wine brewing process of white wine wastewater processing system provided by the utility model processing, after testing water
Matter parameter is：COD（CODcr）For 11250mg/L, five-day BOD（BOD5）For 6580mg/L, ammonia-nitrogen content
（NH3-N）For 96mg/L, suspension（SS）For 1854mg/L.
Embodiment 1
A kind of brewed spirit Waste Water Treatment provided by the utility model, waste water import grille well after pipe network is collected and entered
Row pretreatment, regulating reservoir equilibrium water quality and water is promoted to by elevator pump after removing the suspension of vinasse and bulky grain in waste water
Amount；Waste water in the regulating reservoir flows into coagulative precipitation tank and removes fine suspension and colloidal solid, is added in coagulative precipitation tank
The concentration of coagulant polyacrylamide and aluminium polychloride, polyacrylamide and aluminium polychloride is respectively 15g/m3And 150g/
m3, the fine suspension and colloidal solid in waste water are removed using the absorption of coagulant and cohesion, while add hydroxide
The pH value of sodium regulation waste water is 7；Waste water outflow in coagulative precipitation tank enters intermediate pool and stores and ensured after regulating pondage temporarily
The waste water supply of subsequent technique, then upflow anaerobic sludge blanket reactor is promoted to by elevator pump（UASB）In degrading waste water
Organic matter, while kill pathogenic bacteria；Waste water in UASB flow into successively one-level anoxic pond, one-level Aerobic Pond, two level anoxic pond and
Two level Aerobic Pond removes the nitrogen phosphorus and organic matter in waste water（Dissolved oxygen concentration in one-level anoxic pond is 0.25mg/L, and ammonia nitrogen is dense
Spend for 78.5mg/L, the dissolved oxygen concentration in one-level Aerobic Pond is 1.85mg/L, ammonia nitrogen concentration 30.5mg/L, two level anoxic pond
In dissolved oxygen concentration be 0.25mg/L, ammonia nitrogen concentration 23.5mg/L, the dissolved oxygen concentration in two level Aerobic Pond is 2.5mg/
L, ammonia nitrogen concentration 11.5mg/L）；The waste water of two level Aerobic Pond outflow flows into after the second pond carries out separation of solid and liquid and flows into institute
State sterilization pool using sodium hypochlorite carry out disinfection processing after be discharged into sewage treatment plant；Coagulative precipitation tank, UASB and second pond produce
Sludge be discharged into sludge concentration tank, after being concentrated through chamber-type press filter press filtration water removal after filled.
Obtained waste water is handled by embodiment 1, after testing：CODcrFor 98mg/L, BOD5For 26mg/L, NH3- N is
6mg/L, SS 45mg/L, meet《Fermentation alcohol and Liquor-making industry pollution discharge standard》（GB27631—2011）Will
Ask.
Embodiment 2
A kind of brewed spirit Waste Water Treatment provided by the utility model, waste water import grille well after pipe network is collected and entered
Row pretreatment, regulating reservoir equilibrium water quality and water is promoted to by elevator pump after removing the suspension of vinasse and bulky grain in waste water
Amount；Waste water in the regulating reservoir flows into coagulative precipitation tank and removes fine suspension and colloidal solid, is added in coagulative precipitation tank
The concentration of coagulant polyacrylamide and aluminium polychloride, polyacrylamide and aluminium polychloride is respectively 20g/m3And 200g/
m3, the fine suspension and colloidal solid in waste water are removed using the absorption of coagulant and cohesion, while add hydroxide
The pH value of potassium regulation waste water is 7.5；Waste water outflow in coagulative precipitation tank enters intermediate pool and stores and protected after regulating pondage temporarily
Hinder the waste water supply of subsequent technique, then the organic matter in UASB degrading waste waters is promoted to by elevator pump, while kill pathogenic bacteria；
Waste water in UASB flows into one-level anoxic pond, one-level Aerobic Pond, two level anoxic pond and two level Aerobic Pond and removed in waste water successively
Nitrogen phosphorus and organic matter（Dissolved oxygen concentration in one-level anoxic pond is 0.35mg/L, ammonia nitrogen concentration 81.5mg/L, one-level Aerobic Pond
In dissolved oxygen concentration be 1.9mg/L, ammonia nitrogen concentration 32.5mg/L, the dissolved oxygen concentration in two level anoxic pond is 0.35mg/
L, ammonia nitrogen concentration 24.5mg/L, the dissolved oxygen concentration in two level Aerobic Pond is 3.5mg/L, ammonia nitrogen concentration 12.5mg/L）；Two
The waste water of level Aerobic Pond outflow flows into after the second pond carries out separation of solid and liquid and flows into the sterilization pool using sodium hypochlorite progress
Sewage treatment plant is discharged into after disinfecting；Coagulative precipitation tank, UASB and sludge caused by second pond are discharged into sludge concentration tank, carry out
Filled after concentration after plate and frame filter press press filtration water removal.
Obtained waste water is handled by embodiment 2, after testing：CODcrFor 94mg/L, BOD5For 24mg/L, NH3- N is
5mg/L, SS 42mg/L, meet《Fermentation alcohol and Liquor-making industry pollution discharge standard》（GB27631—2011）Will
Ask.
Embodiment 3
A kind of brewed spirit Waste Water Treatment provided by the utility model, waste water import grille well after pipe network is collected and entered
Row pretreatment, regulating reservoir equilibrium water quality and water is promoted to by elevator pump after removing the suspension of vinasse and bulky grain in waste water
Amount；Waste water in the regulating reservoir flows into coagulative precipitation tank and removes fine suspension and colloidal solid, is added in coagulative precipitation tank
The concentration of coagulant polyacrylamide and aluminium polychloride, polyacrylamide and aluminium polychloride is respectively 22g/m3And 200g/
m3, the fine suspension and colloidal solid in waste water are removed using the absorption of coagulant and cohesion, while add hydroxide
The pH value of sodium regulation waste water is 8；Waste water outflow in coagulative precipitation tank enters intermediate pool and stores and ensured after regulating pondage temporarily
The waste water supply of subsequent technique, then the organic matter in UASB degrading waste waters is promoted to by elevator pump, while kill pathogenic bacteria；
Waste water in UASB flows into one-level anoxic pond, one-level Aerobic Pond, two level anoxic pond and two level Aerobic Pond and removed in waste water successively
Nitrogen phosphorus and organic matter（Dissolved oxygen concentration in one-level anoxic pond is 0.3mg/L, ammonia nitrogen concentration 85mg/L, in one-level Aerobic Pond
Dissolved oxygen concentration be 2.0mg/L, ammonia nitrogen concentration 35mg/L, the dissolved oxygen concentration in two level anoxic pond is 0.3mg/L, ammonia nitrogen
Concentration is 26mg/L, and the dissolved oxygen concentration in two level Aerobic Pond is 3.5mg/L, ammonia nitrogen concentration 12mg/L）；Two level Aerobic Pond stream
The waste water that goes out, which flows into the second pond, flow into after separation of solid and liquid the sterilization pool and is carried out disinfection using sodium hypochlorite after processing
It is discharged into sewage treatment plant；Coagulative precipitation tank, UASB and sludge caused by second pond are discharged into sludge concentration tank, through railway carriage or compartment after being concentrated
Filled after formula filter press press filtration water removal.
Obtained waste water is handled by embodiment 3, after testing：CODcrFor 86mg/L, BOD5For 22mg/L, NH3- N is
4mg/L, SS 43mg/L, meet《Fermentation alcohol and Liquor-making industry pollution discharge standard》（GB27631—2011）Will
Ask.
In order to preferably verify implementation result of the present utility model, the utility model is also provided with contrast test, to having a competition
Waste water caused by the White wine brewing process of processing is tested as the waste water quality parameter that the utility model embodiment is handled.To having a competition
Test with embodiment 3 as reference, by adjusting process, to verify each processing step to wastewater treatment caused by White wine brewing process
Influence.
Contrast test 1
（1）Caused waste water in White wine brewing process is first pre-processed, the vinasse and bulky grain in removal waste water
Suspension, then waste water is passed through into UASB, one-level anoxic pond and one-level Aerobic Pond successively（Dissolved oxygen concentration in one-level anoxic pond is
0.3mg/L, ammonia nitrogen concentration 85mg/L, the dissolved oxygen concentration in one-level Aerobic Pond is 2.0mg/L, ammonia nitrogen concentration 35mg/L）
With two level anoxic pond and two level Aerobic Pond（Dissolved oxygen concentration in two level anoxic pond is 0.3mg/L, ammonia nitrogen concentration 26mg/L,
Dissolved oxygen concentration in two level Aerobic Pond is 3.5mg/L, ammonia nitrogen concentration 12mg/L）, finally flow into second pond and carry out solid-liquid point
From the waste water after separation of solid and liquid is carried out disinfection using sodium hypochlorite again, and the precipitating sludge after separation of solid and liquid is successively by concentration, pressure
Filled after filter.
Detected by the waste water obtained to the processing of contrast test 1：CODcrFor 356.8 mg/L, BOD5For 274.5mg/
L, NH3- N is 13.0mg/L, and SS is 448.3 mg/L.It follows that in the contrast test 1, added not in waste water mixed
Solidifying agent polyacrylamide and aluminium polychloride, also adjust the pH value of waste water without addition alkali, a series of process processing below, most
The waste water indices of post processing are all significantly larger than《Fermentation alcohol and Liquor-making industry pollution discharge standard》（GB27631—
2011）Requirement.
Contrast test 2
（1）Caused waste water in White wine brewing process is first pre-processed, the vinasse and bulky grain in removal waste water
Suspension, then polyacrylamide and aluminium polychloride are added in coagulative precipitation tank, control polyacrylamide and aluminium polychloride
Concentration be 22g/L and 200g/L, while add sodium hydroxide regulation waste water pH value be 8.0；Waste water is passed through one successively again
Level anoxic pond and one-level Aerobic Pond（Dissolved oxygen concentration in one-level anoxic pond is 0.3mg/L, ammonia nitrogen concentration 85mg/L, one-level
Dissolved oxygen concentration in Aerobic Pond is 2.0mg/L, ammonia nitrogen concentration 35mg/L）With two level anoxic pond and two level Aerobic Pond（Two level
Dissolved oxygen concentration in anoxic pond is 0.3mg/L, ammonia nitrogen concentration 26mg/L, and the dissolved oxygen concentration in two level Aerobic Pond is
3.5mg/L, ammonia nitrogen concentration 12mg/L）, last waste water flows into second pond and carries out separation of solid and liquid, and the waste water after separation of solid and liquid is adopted again
Carried out disinfection with sodium hypochlorite, the precipitating sludge after separation of solid and liquid is filled after concentration, press filtration successively.
Detected by the waste water obtained to the processing of contrast test 1：CODcrFor 743.2 mg/L, BOD5For 571.4mg/
L, NH3- N is 11.0 mg/L, and SS is 135.8 mg/L.It follows that in the contrast test 2, waste water UASB is not passed through into
Reacted, remove the majority of organic pollutants in waste water, reduced water quality to the impact load of subsequent technique, finally handle
Waste water indices are all significantly larger than《Fermentation alcohol and Liquor-making industry pollution discharge standard》（GB27631—2011）Will
Ask.
Contrast test 3
（1）Caused waste water in White wine brewing process is first pre-processed, the vinasse and bulky grain in removal waste water
Suspension, then polyacrylamide and aluminium polychloride are added in coagulative precipitation tank, control polyacrylamide and aluminium polychloride
Concentration be 22g/L and 200g/L, while add sodium hydroxide regulation waste water pH value be 8.0；Waste water is passed through successively again
UASB, two level anoxic pond and two level Aerobic Pond（Dissolved oxygen concentration in two level anoxic pond is 0.3mg/L, ammonia nitrogen concentration 72mg/
L, the dissolved oxygen concentration in two level Aerobic Pond is 3.5mg/L, ammonia nitrogen concentration 35mg/L）, last waste water inflow second pond progress
Separation of solid and liquid, the waste water after separation of solid and liquid are carried out disinfection using sodium hypochlorite again, the precipitation after separation of solid and liquid successively by concentration,
Filled after press filtration.
Detected by the waste water obtained to the processing of contrast test 1：CODcrFor 548.3 mg/L, BOD5For 423.6mg/
L, NH3- N is 28.4 mg/L, and SS is 134.7 mg/L.It follows that in the contrast test 3, waste water one-level is not passed through into
Anoxic pond and one-level Aerobic Pond, remove nitrogen phosphorus and organic matter in waste water, and the waste water indices finally handled are all significantly larger than
《Fermentation alcohol and Liquor-making industry pollution discharge standard》（GB27631—2011）Requirement.
Contrast test 4
（1）Caused waste water in White wine brewing process is first pre-processed, the vinasse and bulky grain in removal waste water
Suspension, then polyacrylamide and aluminium polychloride are added in coagulative precipitation tank, control polyacrylamide and aluminium polychloride
Concentration be 22g/L and 200g/L, while add sodium hydroxide regulation waste water pH value be 8.0；Waste water is passed through successively again
UASB, one-level anoxic pond and one-level Aerobic Pond（Dissolved oxygen concentration in one-level anoxic pond is 0.3mg/L, ammonia nitrogen concentration 85mg/
L, the dissolved oxygen concentration in one-level Aerobic Pond is 2.0mg/L, ammonia nitrogen concentration 38mg/L）, last waste water into second pond carry out
Separation of solid and liquid, the waste water after separation of solid and liquid are carried out disinfection using sodium hypochlorite again, and the precipitating sludge after separation of solid and liquid passes through successively
Filled after concentration, press filtration.
Detected by the waste water obtained to the processing of contrast test 1：CODcrFor 569.2 mg/L, BOD5For 423.6mg/
L, NH3- N is 25.7 mg/L, and SS is 145.5 mg/L.It follows that in the contrast test 3, waste water two level is not passed through into
Anoxic pond and two level Aerobic Pond, remove nitrogen phosphorus and organic matter in waste water, and the waste water indices finally handled are all significantly larger than
《Fermentation alcohol and Liquor-making industry pollution discharge standard》（GB27631—2011）Requirement.
Above example only expresses several embodiments of the present utility model, and its description is more specific and detailed, but simultaneously
Therefore the limitation to the utility model patent scope can not be interpreted as.It should be pointed out that the ordinary skill for this area
For personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these all belong to
The scope of protection of the utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (3)
- A kind of 1. brewed spirit Waste Water Treatment, it is characterised in that：The Waste Water Treatment by be sequentially connected grille well, Regulating reservoir, coagulative precipitation tank, intermediate pool, upflow anaerobic sludge blanket reactor, one-level anoxic pond, one-level Aerobic Pond, two level Anoxic pond, two level Aerobic Pond, second pond and sterilization pool composition.
- 2. brewed spirit Waste Water Treatment according to claim 1, it is characterised in that：It is the coagulative precipitation tank, described Upflow anaerobic sludge blanket reactor and the second pond are connected with sludge concentration tank respectively, the sludge concentration tank and filter press It is connected.
- 3. brewed spirit Waste Water Treatment according to claim 1, it is characterised in that：Waste water in the coagulative precipitation tank PH value be 7~8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201720441300.2U CN206886900U (en) | 2017-04-25 | 2017-04-25 | A kind of brewed spirit Waste Water Treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720441300.2U CN206886900U (en) | 2017-04-25 | 2017-04-25 | A kind of brewed spirit Waste Water Treatment |
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| Publication Number | Publication Date |
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| CN206886900U true CN206886900U (en) | 2018-01-16 |
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ID=61324831
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106977053A (en) * | 2017-04-25 | 2017-07-25 | 南昌大学 | A kind of brewed spirit Waste Water Treatment |
| CN113620538A (en) * | 2021-08-26 | 2021-11-09 | 李任帅 | Process for treating high-concentration pit bottom wastewater of Maotai-flavor liquor |
-
2017
- 2017-04-25 CN CN201720441300.2U patent/CN206886900U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106977053A (en) * | 2017-04-25 | 2017-07-25 | 南昌大学 | A kind of brewed spirit Waste Water Treatment |
| CN113620538A (en) * | 2021-08-26 | 2021-11-09 | 李任帅 | Process for treating high-concentration pit bottom wastewater of Maotai-flavor liquor |
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Granted publication date: 20180116 Termination date: 20210425 |