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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- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 16
- 239000002351 wastewater Substances 0.000 claims abstract description 109
- 239000010802 sludge Substances 0.000 claims abstract description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 230000001112 coagulating effect Effects 0.000 claims abstract description 27
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 12
- 238000012545 processing Methods 0.000 claims abstract description 5
- 238000004062 sedimentation Methods 0.000 claims description 44
- 238000011282 treatment Methods 0.000 abstract description 24
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 abstract description 12
- 230000000694 effects Effects 0.000 abstract description 7
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- 229910052760 oxygen Inorganic materials 0.000 description 29
- 239000001301 oxygen Substances 0.000 description 29
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- 239000007788 liquid Substances 0.000 description 21
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- 238000000926 separation method Methods 0.000 description 17
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 16
- 229920002401 polyacrylamide Polymers 0.000 description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 14
- 238000000034 method Methods 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 13
- 238000002474 experimental method Methods 0.000 description 13
- 239000002245 particle Substances 0.000 description 13
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 12
- 229910052698 phosphorus Inorganic materials 0.000 description 12
- 239000011574 phosphorus Substances 0.000 description 12
- 239000007787 solid Substances 0.000 description 10
- 239000003344 environmental pollutant Substances 0.000 description 8
- 239000008235 industrial water Substances 0.000 description 8
- 231100000719 pollutant Toxicity 0.000 description 8
- 238000003825 pressing Methods 0.000 description 8
- 239000005708 Sodium hypochlorite Substances 0.000 description 7
- 239000000701 coagulant Substances 0.000 description 7
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 7
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 238000013124 brewing process Methods 0.000 description 6
- 244000052616 bacterial pathogen Species 0.000 description 5
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- 230000001546 nitrifying effect Effects 0.000 description 3
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- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 206010021143 Hypoxia Diseases 0.000 description 2
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
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- 239000002699 waste material Substances 0.000 description 2
- 241000588724 Escherichia coli Species 0.000 description 1
- AMQJEAYHLZJPGS-UHFFFAOYSA-N N-Pentanol Chemical compound CCCCCO AMQJEAYHLZJPGS-UHFFFAOYSA-N 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 240000006394 Sorghum bicolor Species 0.000 description 1
- 235000011684 Sorghum saccharatum Nutrition 0.000 description 1
- 241000209140 Triticum Species 0.000 description 1
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- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
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Landscapes
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
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
The utility model relates to a waste water treatment field especially relates to a effluent disposal system is made to white spirit.
Background
Chinese liquor culture is huge and profound, and liquor products serving as special commodities meeting the material requirements and the mental requirements of people are closely connected with the culture of the producing areas of the liquor. Drinking is not only a kind of material enjoyment, but also an emotion carrier for expressing emotion, promoting friendship and expanding communication of people, and is an indispensable regulator in interpersonal relationship. According to statistics, in over 1563 white spirit enterprises in 2015, the total white spirit yield is 1312.80 kilo-kiloliters and the sales income is 5558.86 billion yuan; the amount of white spirit in the product is 16188.83 kiloliters, and the total amount of white spirit in the product is 4.49 hundred million dollars. However, the production of the white spirit can create material wealth and promote the development of national economy and simultaneously can generate a large amount of waste water.
The raw materials of Chinese liquor are mainly wheat, corn and sorghum, and the waste water produced in the brewing process mainly comprises distilled bottom boiler water, yeast box cleaning water, yeast printing waste water, liquor vinasse waste liquid, fermentation tank leachate, grain soaking water, distilled cooling water, equipment cleaning and the like produced in the production process. The main components of the wastewater are amino acid, low-carbon alcohol (ethanol, amyl alcohol and the like) and fatty acid, and the wastewater belongs to high-concentration organic wastewater. The wastewater has the characteristics of high Chemical Oxygen Demand (COD) concentration, high content of Suspended Solids (SS), strong biodegradability, complex components and the like. At present, the domestic white spirit wastewater treatment is usually carried out by adopting an anaerobic-aerobic biochemical method. But at the present stage, an economical, reasonable and technically mature combined process for treating the wastewater is still lacked.
Therefore, the combined process which has good nitrogen and phosphorus removal effect, low investment and operation cost, simple operation and management according to local conditions and can generate certain economic and environmental benefits is found, and is especially important for solving the problem of environmental pollution caused by large-scale white spirit wastewater.
Disclosure of Invention
For solving the technical problem, the utility model provides a effluent disposal system is made to white spirit, effluent disposal system comprises consecutive grid well, equalizing basin, coagulating sedimentation tank, middle pond, up-flow anaerobic sludge bed reactor, one-level oxygen deficiency pond, one-level good oxygen pond, second grade oxygen deficiency pond, second grade good oxygen pond, two heavy ponds and disinfection pond.
The coagulating sedimentation tank, the upflow anaerobic sludge blanket reactor and the secondary sedimentation tank are respectively connected with a sludge concentration tank, and the sludge concentration tank is connected with a filter press.
Preferably, the filter press is a chamber filter press or a plate and frame filter press.
Wherein,
after removing vinasse and large particle suspended matters in the wastewater, lifting the wastewater to a regulating tank by a lifting pump to balance water quality and water quantity;
the wastewater in the regulating tank flows into a coagulating sedimentation tank to remove fine suspended matters and colloidal particles;
the wastewater in the coagulating sedimentation tank overflows into an intermediate water tank for temporary storage and water quantity regulation, and then the wastewater supply of the subsequent process is guaranteed;
the wastewater in the intermediate water tank is lifted to the upflow anaerobic sludge bed reactor through a lift pump to degrade organic matters and kill pathogenic bacteria simultaneously;
the wastewater in the up-flow anaerobic sludge bed reactor sequentially flows into the primary anoxic tank, the primary aerobic tank, the secondary anoxic tank and the secondary aerobic tank to remove nitrogen, phosphorus and organic matters in the wastewater;
wastewater flowing out of the secondary aerobic tank flows into the secondary sedimentation tank for solid-liquid separation, then flows into the disinfection tank for disinfection treatment, and then is discharged into a sewage treatment plant;
and sludge generated by the coagulating sedimentation tank, the upflow anaerobic sludge bed reactor and the secondary sedimentation tank is discharged into a sludge concentration tank, is concentrated and is subjected to filter pressing and dewatering by the filter press, and then is buried.
The primary aerobic tank and the secondary aerobic tank contain nitrifying liquid, part of the nitrifying liquid in the primary aerobic tank flows back to the primary anoxic tank, and part of the nitrifying liquid in the secondary aerobic tank flows back to the secondary anoxic tank.
And part of sludge in the sludge concentration tank flows back to the primary anoxic tank to keep the concentration of the activated sludge in the primary anoxic tank.
And the supernatant in the sludge concentration tank and the filtrate of the filter press flow back to the regulating tank.
Wherein, the coagulating sedimentation tank contains a coagulant and alkali.
Wherein the coagulant is polyacrylamide and polyaluminium chloride.
Wherein, the alkali can be any one or the combination of several of sodium hydroxide, potassium hydroxide, sodium carbonate, calcium oxide and calcium carbonate.
Wherein the pH value of the wastewater in the coagulating sedimentation tank is 7-8.
The utility model has the advantages that:
the utility model provides a white spirit brewing wastewater treatment system, on the first hand through the coagulation basin with the sedimentation tank co-construction, reduce area, reduce the investment, the water of coagulation basin directly flows into the sedimentation district through the partition wall can improve the sedimentation separation effect; in addition, a coagulant of polyacrylamide and polyaluminium chloride is added into the coagulating sedimentation tank, and the adsorption and flocculation effects of the polyacrylamide and the polyaluminium chloride are utilized to remove fine suspended matters and colloidal particles in the wastewater.
In the second aspect, the wastewater is treated by an up-flow anaerobic sludge bed reactor, so that most organic pollutants in the wastewater are removed, the impact load of water on a subsequent process is reduced, the normal operation of the subsequent biological treatment process is ensured, and a large amount of generated methane can be used as energy; in addition, the anaerobic fermentation can kill a large amount of escherichia coli, pathogenic bacteria and partial viruses, and the treatment load of a subsequent disinfection tank is reduced.
And in the third aspect, the problems of deficiency, nitrate interference and difficulty in taking both denitrifying bacteria and phosphorus accumulating bacteria into consideration in the denitrifying and phosphorus removing process of the traditional process are solved by controlling operating parameters such as sludge age, hydraulic retention time, reflux ratio of mixed liquid in an aerobic section and the like according to different proliferation characteristics of phosphorus accumulating bacteria and denitrifying bacteria through two-stage anoxic/aerobic series process treatment, and the phosphorus and phosphorus removing is realized efficiently.
Through the utility model provides a wastewater treatment system is made to white spirit, technology working costs is low, and the treatment effect is stable, and waste water after the processing detects the requirement that final play water each item index all is less than "fermentation alcohol and white spirit industrial water pollutant emission standard" (GB 27631-2011), can directly carry out further processing to sewage treatment plant discharge.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the embodiments will be briefly described below, and obviously, the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained according to the drawings without creative efforts for those skilled in the art.
FIG. 1 is a schematic structural view of a white spirit wastewater treatment system provided by the utility model.
Detailed Description
The following is a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the principle of the present invention, and these improvements and decorations are also considered as the protection scope of the present invention.
The utility model provides a waste water that white spirit brewing technology that white spirit effluent disposal system handled produced, through detecting the quality of water parameter and being: chemical Oxygen Demand (COD)cr) 11250mg/L, five days Biochemical Oxygen Demand (BOD)5) 6580mg/L, ammonia nitrogen content (NH)3N) was 96mg/L and the suspension (SS) was 1854 mg/L.
Example 1
The utility model provides a white spirit brewing wastewater treatment system, which is characterized in that wastewater is collected through a pipe network and then is gathered into a grid well for pretreatment, and the wastewater is lifted to an adjusting tank by a lift pump to balance water quality and water quantity after vinasse and large-particle suspended matters in the wastewater are removed; the wastewater in the regulating tank flows into a coagulating sedimentation tank to remove fine suspended matters and colloidal particles, a coagulant polyacrylamide and polyaluminium chloride are added into the coagulating sedimentation tank, and the concentrations of the polyacrylamide and the polyaluminium chloride are respectively 15g/m3And 150g/m3Removing fine suspended substances and colloids in wastewater by utilizing adsorption and coagulation of coagulantAdding sodium hydroxide to regulate the pH value of the wastewater to 7; the wastewater in the coagulating sedimentation tank overflows into an intermediate water tank for temporary storage and water quantity regulation, then the wastewater supply of the subsequent process is guaranteed, and the wastewater is lifted to an upflow anaerobic sludge blanket reactor (UASB) through a lift pump to degrade organic matters in the wastewater and kill pathogenic bacteria; wastewater in UASB flows into a first-stage anoxic tank, a first-stage aerobic tank, a second-stage anoxic tank and a second-stage aerobic tank in sequence to remove nitrogen, phosphorus and organic matters in the wastewater (the concentration of dissolved oxygen in the first-stage anoxic tank is 0.25mg/L, the concentration of ammonia nitrogen is 78.5mg/L, the concentration of dissolved oxygen in the first-stage aerobic tank is 1.85mg/L, the concentration of ammonia nitrogen is 30.5mg/L, the concentration of dissolved oxygen in the second-stage anoxic tank is 0.25mg/L, the concentration of ammonia nitrogen is 23.5mg/L, the concentration of dissolved oxygen in the second-stage aerobic tank is 2.5mg/L, and the concentration of ammonia nitrogen is 11.5 mg/L); wastewater flowing out of the secondary aerobic tank flows into the secondary sedimentation tank for solid-liquid separation, then flows into the disinfection tank for disinfection treatment by sodium hypochlorite, and then is discharged into a sewage treatment plant; and discharging sludge generated by the coagulating sedimentation tank, the UASB and the secondary sedimentation tank into a sludge concentration tank, concentrating, and performing filter pressing and dewatering by using a box type filter press to perform landfill.
The waste water obtained by treatment of example 1, tested: CODcr98mg/L, BOD5Is 26mg/L, NH3N is 6mg/L, SS is 45mg/L, and the requirements of the emission standard of pollutants for fermented alcohol and white spirit industrial water (GB 27631-2011) are met.
Example 2
The utility model provides a white spirit brewing wastewater treatment system, which is characterized in that wastewater is collected through a pipe network and then is gathered into a grid well for pretreatment, and the wastewater is lifted to an adjusting tank by a lift pump to balance water quality and water quantity after vinasse and large-particle suspended matters in the wastewater are removed; the wastewater in the regulating tank flows into a coagulating sedimentation tank to remove fine suspended matters and colloidal particles, a coagulant polyacrylamide and polyaluminium chloride are added into the coagulating sedimentation tank, and the concentrations of the polyacrylamide and the polyaluminium chloride are respectively 20g/m3And 200g/m3Removing waste by adsorption and coagulation of coagulantAdding potassium hydroxide to adjust the pH value of the wastewater to 7.5; the wastewater in the coagulating sedimentation tank overflows into an intermediate water tank for temporary storage and water quantity regulation, then the wastewater supply of the subsequent process is guaranteed, and the wastewater is lifted to UASB through a lifting pump to degrade organic matters in the wastewater and kill pathogenic bacteria; wastewater in UASB flows into a first-stage anoxic tank, a first-stage aerobic tank, a second-stage anoxic tank and a second-stage aerobic tank in sequence to remove nitrogen, phosphorus and organic matters in the wastewater (the concentration of dissolved oxygen in the first-stage anoxic tank is 0.35mg/L, the concentration of ammonia nitrogen is 81.5mg/L, the concentration of dissolved oxygen in the first-stage aerobic tank is 1.9mg/L, the concentration of ammonia nitrogen is 32.5mg/L, the concentration of dissolved oxygen in the second-stage anoxic tank is 0.35mg/L, the concentration of ammonia nitrogen is 24.5mg/L, the concentration of dissolved oxygen in the second-stage aerobic tank is 3.5mg/L, and the concentration of ammonia nitrogen is 12.5 mg/L); wastewater flowing out of the secondary aerobic tank flows into the secondary sedimentation tank for solid-liquid separation, then flows into the disinfection tank for disinfection treatment by sodium hypochlorite, and then is discharged into a sewage treatment plant; and discharging sludge generated by the coagulating sedimentation tank, the UASB and the secondary sedimentation tank into a sludge concentration tank, concentrating, and performing filter pressing and dewatering by using a plate-and-frame filter press for landfill.
The waste water obtained by treatment of example 2, tested: CODcr94mg/L, BOD5Is 24mg/L, NH3N is 5mg/L, SS is 42mg/L, and the requirements of the emission standard of pollutants for fermented alcohol and white spirit industrial water (GB 27631-2011) are met.
Example 3
The utility model provides a white spirit brewing wastewater treatment system, which is characterized in that wastewater is collected through a pipe network and then is gathered into a grid well for pretreatment, and the wastewater is lifted to an adjusting tank by a lift pump to balance water quality and water quantity after vinasse and large-particle suspended matters in the wastewater are removed; the wastewater in the regulating tank flows into a coagulating sedimentation tank to remove fine suspended matters and colloidal particles, a coagulant polyacrylamide and polyaluminium chloride are added into the coagulating sedimentation tank, and the concentrations of the polyacrylamide and the polyaluminium chloride are respectively 22g/m3And 200g/m3Removing waste water by using the adsorption and coagulation of coagulantSimultaneously adding sodium hydroxide to adjust the pH value of the wastewater to 8; the wastewater in the coagulating sedimentation tank overflows into an intermediate water tank for temporary storage and water quantity regulation, then the wastewater supply of the subsequent process is guaranteed, and the wastewater is lifted to UASB through a lifting pump to degrade organic matters in the wastewater and kill pathogenic bacteria; wastewater in UASB flows into a first-stage anoxic tank, a first-stage aerobic tank, a second-stage anoxic tank and a second-stage aerobic tank in sequence to remove nitrogen, phosphorus and organic matters in the wastewater (the concentration of dissolved oxygen in the first-stage anoxic tank is 0.3mg/L, the concentration of ammonia nitrogen is 85mg/L, the concentration of dissolved oxygen in the first-stage aerobic tank is 2.0mg/L, the concentration of ammonia nitrogen is 35mg/L, the concentration of dissolved oxygen in the second-stage anoxic tank is 0.3mg/L, the concentration of ammonia nitrogen is 26mg/L, the concentration of dissolved oxygen in the second-stage aerobic tank is 3.5mg/L, and the concentration of ammonia nitrogen is 12 mg/L); wastewater flowing out of the secondary aerobic tank flows into the secondary sedimentation tank for solid-liquid separation, then flows into the disinfection tank for disinfection treatment by sodium hypochlorite, and then is discharged into a sewage treatment plant; and discharging sludge generated by the coagulating sedimentation tank, the UASB and the secondary sedimentation tank into a sludge concentration tank, concentrating, and performing filter pressing and dewatering by using a box type filter press to perform landfill.
The waste water obtained by treatment of example 3 was tested: CODcr86mg/L, BOD5Is 22mg/L, NH3N is 4mg/L, SS is 43mg/L, and the requirements of the emission standard of pollutants for fermented alcohol and white spirit industrial water (GB 27631-2011) are met.
For better verification the utility model discloses an implement the effect, the utility model discloses still set up the contrast test, the white spirit that the contrast test was handled makes the waste water that the technology produced with follow the utility model discloses the waste water quality of water parameter of handling is the same. Comparative experiments with reference to example 3, the effect of each process step on the treatment of wastewater generated by the white spirit brewing process was verified by adjusting the process.
Comparative experiment 1
(1) Pretreating wastewater generated in a liquor brewing process to remove vinasse and large-particle suspended matters in the wastewater, sequentially passing the wastewater through a UASB, a primary anoxic tank and a primary aerobic tank (the dissolved oxygen concentration in the primary anoxic tank is 0.3mg/L, the ammonia nitrogen concentration is 85mg/L, the dissolved oxygen concentration in the primary aerobic tank is 2.0mg/L, and the ammonia nitrogen concentration is 35 mg/L), a secondary anoxic tank and a secondary aerobic tank (the dissolved oxygen concentration in the secondary anoxic tank is 0.3mg/L, the ammonia nitrogen concentration is 26mg/L, the dissolved oxygen concentration in the secondary aerobic tank is 3.5mg/L, and the ammonia nitrogen concentration is 12 mg/L), finally flowing into a secondary sedimentation tank to perform solid-liquid separation, sterilizing the wastewater after solid-liquid separation by using sodium hypochlorite, and sequentially concentrating precipitated sludge after solid-liquid separation, and (5) performing filter pressing and then landfill.
The wastewater obtained by the treatment of comparative experiment 1 was tested: CODcr356.8 mg/L, BOD5274.5mg/L, NH3N is 13.0mg/L, and SS is 448.3 mg/L. Therefore, in the comparative experiment 1, coagulant polyacrylamide and polyaluminium chloride are not added into the wastewater, alkali is not added to adjust the pH value of the wastewater, and after a series of treatments, all indexes of the finally treated wastewater are far higher than the requirements of the emission standard of pollutants for fermented alcohol and white spirit industrial water (GB 27631-2011).
Comparative experiment 2
(1) Pretreating wastewater generated in a white spirit brewing process to remove vinasse and large-particle suspended matters in the wastewater, adding polyacrylamide and polyaluminium chloride into a coagulating sedimentation tank, controlling the concentrations of the polyacrylamide and the polyaluminium chloride to be 22g/L and 200g/L, and simultaneously adding sodium hydroxide to adjust the pH value of the wastewater to be 8.0; and then sequentially passing the wastewater through a primary anoxic tank and a primary aerobic tank (the dissolved oxygen concentration in the primary anoxic tank is 0.3mg/L, the ammonia nitrogen concentration is 85mg/L, the dissolved oxygen concentration in the primary aerobic tank is 2.0mg/L, and the ammonia nitrogen concentration is 35 mg/L), and a secondary anoxic tank and a secondary aerobic tank (the dissolved oxygen concentration in the secondary anoxic tank is 0.3mg/L, the ammonia nitrogen concentration is 26mg/L, the dissolved oxygen concentration in the secondary aerobic tank is 3.5mg/L, and the ammonia nitrogen concentration is 12 mg/L), finally passing the wastewater into a secondary sedimentation tank for solid-liquid separation, sterilizing the wastewater after solid-liquid separation by adopting sodium hypochlorite, and sequentially concentrating, filter-pressing and burying the precipitated sludge after solid-liquid separation.
The wastewater obtained by the treatment of comparative experiment 1 was tested: CODcr743.2 mg/L, BOD5571.4mg/L, NH3N is 11.0 mg/L, and SS is 135.8 mg/L. Therefore, in the comparative experiment 2, the wastewater is not subjected to UASB reaction, most organic pollutants in the wastewater are removed, the impact load of water quality on the subsequent process is reduced, and all indexes of the finally treated wastewater are far higher than the requirements of the emission standards of pollutants in fermented alcohol and white spirit industrial water (GB 27631-2011).
Comparative experiment 3
(1) Pretreating wastewater generated in a white spirit brewing process to remove vinasse and large-particle suspended matters in the wastewater, adding polyacrylamide and polyaluminium chloride into a coagulating sedimentation tank, controlling the concentrations of the polyacrylamide and the polyaluminium chloride to be 22g/L and 200g/L, and simultaneously adding sodium hydroxide to adjust the pH value of the wastewater to be 8.0; and then sequentially passing the wastewater through a UASB, a secondary anoxic tank and a secondary aerobic tank (the concentration of dissolved oxygen in the secondary anoxic tank is 0.3mg/L, the concentration of ammonia nitrogen is 72mg/L, the concentration of dissolved oxygen in the secondary aerobic tank is 3.5mg/L, and the concentration of ammonia nitrogen is 35 mg/L), finally, allowing the wastewater to flow into a secondary sedimentation tank for solid-liquid separation, sterilizing the wastewater after solid-liquid separation by using sodium hypochlorite, and sequentially concentrating, filter-pressing and burying precipitates after solid-liquid separation.
The wastewater obtained by the treatment of comparative experiment 1 was tested: CODcr548.3 mg/L, BOD5423.6mg/L, NH3N28.4 mg/L, SS 134.7 mg/L. Therefore, in the comparative experiment 3, the wastewater does not pass through the first-stage anoxic tank and the first-stage aerobic tank to remove nitrogen, phosphorus and organic matters in the wastewater, and all indexes of the finally treated wastewater are far higher than the requirements of the discharge standards of pollutants in fermented alcohol and white spirit industrial water (GB 27631-2011).
Comparative experiment 4
(1) Pretreating wastewater generated in a white spirit brewing process to remove vinasse and large-particle suspended matters in the wastewater, adding polyacrylamide and polyaluminium chloride into a coagulating sedimentation tank, controlling the concentrations of the polyacrylamide and the polyaluminium chloride to be 22g/L and 200g/L, and simultaneously adding sodium hydroxide to adjust the pH value of the wastewater to be 8.0; and then sequentially passing the wastewater through a UASB, a primary anoxic tank and a primary aerobic tank (the dissolved oxygen concentration in the primary anoxic tank is 0.3mg/L, the ammonia nitrogen concentration is 85mg/L, the dissolved oxygen concentration in the primary aerobic tank is 2.0mg/L, and the ammonia nitrogen concentration is 38 mg/L), finally, feeding the wastewater into a secondary sedimentation tank for solid-liquid separation, sterilizing the wastewater after the solid-liquid separation by adopting sodium hypochlorite, and sequentially concentrating, filter-pressing and burying the precipitated sludge after the solid-liquid separation.
The wastewater obtained by the treatment of comparative experiment 1 was tested: CODcr569.2 mg/L, BOD5423.6mg/L, NH3N was 25.7 mg/L and SS was 145.5 mg/L. Therefore, in the comparative experiment 3, the wastewater does not pass through the secondary anoxic tank and the secondary aerobic tank to remove nitrogen, phosphorus and organic matters in the wastewater, and all indexes of the finally treated wastewater are far higher than the requirements of the emission standards of pollutants for fermented alcohol and white spirit industrial water (GB 27631-2011).
The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several changes and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (3)
1. The utility model provides a processing system of waste water is made to white spirit which characterized in that: the wastewater treatment system consists of a grid well, an adjusting tank, a coagulating sedimentation tank, an intermediate water tank, an up-flow anaerobic sludge bed reactor, a primary anoxic tank, a primary aerobic tank, a secondary anoxic tank, a secondary aerobic tank, a secondary sedimentation tank and a disinfection tank which are sequentially connected.
2. The liquor brewing wastewater treatment system according to claim 1, wherein: the coagulating sedimentation tank, the up-flow anaerobic sludge bed reactor and the secondary sedimentation tank are respectively connected with a sludge concentration tank, and the sludge concentration tank is connected with a filter press.
3. The liquor brewing wastewater treatment system according to claim 1, wherein: and the pH value of the wastewater in the coagulating sedimentation tank is 7-8.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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