CN1315296A - Process for treating waste liquid of molasses alcohol - Google Patents
Process for treating waste liquid of molasses alcohol Download PDFInfo
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- CN1315296A CN1315296A CN 00112824 CN00112824A CN1315296A CN 1315296 A CN1315296 A CN 1315296A CN 00112824 CN00112824 CN 00112824 CN 00112824 A CN00112824 A CN 00112824A CN 1315296 A CN1315296 A CN 1315296A
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- molasses alcohol
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Abstract
A process for treating the waste liquid of molasses alcohol includes such steps as cooling to 20-35 deg.C, regulating pH value to 5.5-7.5, acidic hydrolysis to make it soluble, oxidizing by photosynthesis bacteria in 4-7 oxidizing pools in sequence, bio-oxidizing with aerobic microbes by activated sludge method, and membrane separation. Its advantages include high effect, low cost and use of waste.
Description
The present invention administers molasses alcohol waste mash for a kind of the processing with the biochemical treatment binding film, makes waste water after the processing can reach the method for emission standard.
Molasses alcohol waste mash is the waste liquid of the molasses fermented preparing alcohol byproduct in sugar refinery, one ton of alcohol of every production will discharge 13-15 ton waste liquid, its main component is: COD concentration 8-12 ten thousand mg/L, BOD concentration 4-6 ten thousand mg/L, solid substance 9-13%, PH4-5, colourity 2500-5000 times, organism 7-9%, complete sugared 1.2-1.9%, potassium 5-8g/L, nitrogen 0.42% and multiple amino acids.Present most sugar refinery does not add processing and directly it is entered water body, causes the severe contamination at environment and water source, has wasted the effective constituent in the useless mash simultaneously yet.The processing of molasses alcohol waste mash is a green technology difficult problem that troubles sugar-refining industry always.For containing organic waste water, promptly containing the wastewater treatment method of biological oxygen demand BOD composition, generally adopted activated sludge process in the past.This method is removed BOD composition contained in the waste water by the microbiological degradation in the active sludge.Yet the BOD concentration that is applicable to the waste water of above-mentioned Wastewater Treated by Activated Sludge Process generally only is about 1000mg/L.If handle with evaporation concentration method, not only the high sugar refinery of working cost can't be born, and wherein effective constituent is lost significantly after pyroprocessing, makes it can not get effective and reasonable utilization.Existing anaerobism biogas, aeration is handled useless mash after the anaerobism, and reaction time is long, and investment is big, and occupation of land is big, and leading indicators such as COD, BOD, colourity all are difficult to reach discharging standards, and the also high sugar refinery of processing cost can not be born.Publication number is that the Chinese patent file of CN_1072661A has been announced a kind of " treatment process of organic waste water ", claims its purpose to be to use photosynthetic bacterium to handle the waste water that contains the ultrahigh concentration organism.Its treatment process comprises the sorption of photosynthetic bacterium thalline so as to protecting it, can not prey on by the prey bacterium it in porous carrier, improves the settleability of secondary endophytic bacteria body simultaneously.The treatable waste water BOD of this method, COD concentration are about 10,000 mg/L, however molasses alcohol waste mash COD concentration up to 8-12 ten thousand mg/L, BOD concentration is up to 4-6 ten thousand mg/L.Even if therefore handling molasses alcohol waste mash with this method also is difficult to make it reach emission standard.
The improvement method that the purpose of this invention is to provide a kind of molasses alcohol waste mash can reach emission standard after require using this method to handle molasses alcohol waste mash, and facility investment and working cost are low, can utilize resource to turn waste into wealth.
The inventive method in turn includes the following steps:
The pH value that cools the temperature to 20 ℃-35 ℃ molasses alcohol waste mash is adjusted to 5.5-7.5 (best pH value is 6) → carry out dissolving processing → successively in 4-7 photosynthetic bacterium oxidation pond with the acidification hydrolization mode, use commercially available photosynthetic microbial inoculum carry out photosynthetic bacterium oxide treatment → employing activated sludge process with aerobic microbiological carry out bio-contact oxidation handle → carry out the film processing with the film device of prior art.
Can dissolve processing, be at good gas and dislike under the effect of gas bacterium, macromolecular substance is resolved into small-molecule substance,, maximally utilise its biochemical function, improve the purification efficiency of waste water for light and bacterium provide suitable nutraceutical matrix.When this carry out small moleculesization, with organic oxygenolysis.Waste water is about 10-15% at the COD in this stage clearance.
The feasible part of utilizing the photosynthetic bacterium method to handle high concentrated organic wastewater is that former water is not added dilution and directly enters treatment system, can bear higher organic loading in the treatment system, and treatment effect is stable, and volumetric loading can reach BOD6kg/m
3During the photosynthetic bacterium oxide treatment, between the photosynthetic bacterium population and the groupy phase mutual effect of different oxygen bacterium,,, organism is degraded for photosynthetic bacterium provides suitable nutraceutical matrix continuously by the close fit between each population of microorganism.This stage, the COD clearance was about 75%.
Waste water is after photosynthetic bacterium is handled, and remaining organic concentration is also very high, need carry out bio-contact oxidation and handle, and promptly further handles with aerobic microbiological, to improve total processing efficiency.This stage, the COD clearance was at 40-60%.
Because after above-mentioned processing, still remaining organism and can not be by the material of biochemical treatment, water quality does not still reach emission standard, therefore need carry out film and handle.But the water qualified discharge after film is handled.
Adopt the inventive method, can handle effectively COD concentration up to COD concentration up to 120,000 mg/L, the ultra-high concentration organic wastewater of BOD concentration about up to 60,000 mg/L.
Beneficial effect of the present invention: can reach emission standard after handling molasses alcohol waste mash, and facility investment and working cost are low.In addition, when using this method to handle, all contain the light and the bacterium of higher concentration in the water outlet of photosynthetic bacterium groove and the mud of settling bath, can fully be used.Light and bacterium have a wide range of applications as a kind of microbial product, and for example can be used as bio-feritlizer is used for agricultural, and soil improvement is had better effect.Therefore the present invention can also make full use of resource, turns waste into wealth.
Accompanying drawing is the process flow diagram of embodiment.
Embodiment: accompanying drawing is seen in technical process, and further is described as follows:
1, equalizing tank: because the temperature of molasses alcohol waste mash can not directly be carried out biochemical treatment about 80 ℃-90 ℃, therefore carry out the cooling of two steps, its temperature is reduced to about 28 ℃.In equalizing tank, carry out water quality and quantity and regulate, and the pH value of molasses alcohol waste mash is adjusted to 6 with an amount of calcium oxide.
But 2 molten pools: add urea, phosphamidon and dipotassium hydrogen phosphate, molasses alcohol waste mash is carried out dissolving processing.
3, settling tank 1: waste water carries out solid-liquid separation at this after can dissolving, and clear liquid flows into the photosynthetic bacterium oxidation pond, but a precipitating sludge part is returned molten pool, and a part enters sludge sump.
4, photosynthetic bacterium oxidation pond: in 5 photosynthetic bacterium oxidation ponds, use the commercially available photosynthetic microbial inoculum based on the non-sulphur Cordycepps of redness (Athiorhodaceae) to carry out the photosynthetic bacterium oxide treatment successively, every grade treatment time is 24 hours.Said commercially available photosynthetic microbial inoculum is that commodity person of outstanding talent by name makes special bacteria agent, this product in October, 1998 People's Republic of China's license licensed licenser licence, and card number faces word (0019) number for microorganism fertilizer (1998).
5, settling tank 2: the major part in the photosynthetic bacterium oxidation pond of the organism in the waste water is removed, and produces a certain amount of thalline mud simultaneously, so need carry out mud-water separation, supernatant liquor flows into biological contact oxidation pond, and precipitating sludge enters sludge sump after refluxing.
6, in the biological contact oxidation pond: add active sludge, use aerobic microbiological to carry out bio-contact oxidation and handle.
7, settling tank 3: the microbial film in the biological contact oxidation pond on the biologic packing material is after growth after a while, and will constantly wear out comes off, and brings in constant renewal in.The microbial film that comes off enters settling tank 3 with water outlet and carries out mud-water separation.The stillness of night enters intermediate pool 1, and isolated mud enters sludge sump.
8, high efficiency filter: owing to also have small solid particulate in the clear liquid through precipitating and isolating, can handle next step film and bring disadvantageous effect, therefore earlier carry out purifying treatment through high efficiency filter, water outlet enters intermediate pool.Used high efficiency filter is commercially available standard equipment.
9, film is handled: selected membrane treatment appts is ultra-filtration equipment and the nanofiltration device that Dalian Chemiclophysics Inst., Chinese Academy of Sciences, film engineering research centre of development, Dalian produce.This device is the standard series product, and working process is full-automatic control.Ultra-filtration equipment COD removes filter for 25-39%, and certain decolorization is arranged.Ultra-filtration equipment is that the first step is filtered.The second stage is filtered into nanofiltration device, and COD removes filter can reach 94%, and has significant decolorization.But the water qualified discharge after film is handled, bringing back to life of condensed water system handles again.
10, sludge treating system: remainder all entered sludge sump after the isolated mud of settling tanks at different levels refluxed, and squeezed into plate-and-frame filter press with sludge pump again and carried out processed.Mud cake is good organic fertilizer, and toxicological harmless can be directly used in the infertile field, also can treat as solid refuse and abandon.
11, airing system: biochemical treatments at different levels unit all need blast pressurized air, and oxygenation in waste water is to guarantee the life Metabolic activity of aerobic microbiological.Pressurized air is provided by roots blower.But perforated pipe aerating regulation is adopted in equalizing tank molten pool, light and bacterium pond, and contact-oxidation pool adopts high efficient aeration head aeration.
Handle the water yield: 1m
3/ h
Waste water quality before handling: COD 8-12 ten thousand mg/L
BOD5 4-6 ten thousand mg/L
SS 6000-1200mg/L
PH 4-5
Colourity 2500-5000 doubly
Handle back water quality: COD 145.43mg/L
BOD5?85.52mg/L
SS 4mg/L
PH 6-7
Colourity more than 10 times index through Kunming environment detecting/monitoring junction centre monitoring, reach country's " integrated wastewater discharge standard " (GB8978-1996) in secondary standard of regulation.
Above embodiment is only for the present invention is further illustrated, and scope of the present invention is not subjected to the limitation of illustrated embodiment.
Claims (5)
1, a kind of improvement method of molasses alcohol waste mash, it is characterized in that: the pH value that cools the temperature to 20 ℃-35 ℃ molasses alcohol waste mash is adjusted to 5.5-7.5 (best pH value is 6) → carry out dissolving processing → successively in 4-7 photosynthetic bacterium oxidation pond with the acidification hydrolization mode, use commercially available photosynthetic microbial inoculum carry out photosynthetic bacterium oxide treatment → employing activated sludge process with aerobic microbiological carry out bio-contact oxidation handle → carry out the film processing with the film device of prior art.
2, as the improvement method of the said molasses alcohol waste mash of claim 1, the pH value that it is characterized in that cooling the temperature to 20 ℃-35 ℃ molasses alcohol waste mash is adjusted to 6.
3, as the improvement method of the said molasses alcohol waste mash of claim 1, it is characterized in that adding urea, phosphamidon and dipotassium hydrogen phosphate, molasses alcohol waste mash is carried out dissolving processing.
4, as the improvement method of the said molasses alcohol waste mash of claim 1, it is characterized in that waste water after can dissolving processing, carries out solid-liquid separation, clear liquid flows into the photosynthetic bacterium oxidation pond, but a precipitating sludge part is returned molten pool, and a part enters sludge sump.
5, as the improvement method of the said molasses alcohol waste mash of claim 1, it is characterized in that using commercially available photosynthetic microbial inoculum to carry out the photosynthetic bacterium oxide treatment based on the non-sulphur Cordycepps of redness (Athiorhodaceae),
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00112824 CN1315296A (en) | 2000-03-29 | 2000-03-29 | Process for treating waste liquid of molasses alcohol |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 00112824 CN1315296A (en) | 2000-03-29 | 2000-03-29 | Process for treating waste liquid of molasses alcohol |
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| CN1315296A true CN1315296A (en) | 2001-10-03 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101746911B (en) * | 2009-12-21 | 2011-09-21 | 陕西师范大学 | Preprocessing method of hexadecyl trimethyl ammonium bromide for molasses alcohol waste water |
| CN102372404A (en) * | 2011-09-28 | 2012-03-14 | 浙江省环境保护科学设计研究院 | Bio-augmentation treatment sludge in-situ reduction method |
| CN102381815A (en) * | 2011-09-30 | 2012-03-21 | 江苏春晖乳业有限公司 | Treatment method of milk production wastewater |
| CN103553281A (en) * | 2013-11-19 | 2014-02-05 | 广西新方向化学工业有限公司 | Innocent treatment of alcohol slops and application technique |
| CN104150714A (en) * | 2014-08-12 | 2014-11-19 | 蓝昆元 | Method for treating sulfur-containing waste produced by sugarhouse and producing compound bacterial fertilizer by using multiple species inoculant |
| CN106277587A (en) * | 2016-08-24 | 2017-01-04 | 江苏众胜灭菌设备科技有限公司 | The backwash filter method that a kind of effluent cycle processes |
-
2000
- 2000-03-29 CN CN 00112824 patent/CN1315296A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101746911B (en) * | 2009-12-21 | 2011-09-21 | 陕西师范大学 | Preprocessing method of hexadecyl trimethyl ammonium bromide for molasses alcohol waste water |
| CN102372404A (en) * | 2011-09-28 | 2012-03-14 | 浙江省环境保护科学设计研究院 | Bio-augmentation treatment sludge in-situ reduction method |
| CN102381815A (en) * | 2011-09-30 | 2012-03-21 | 江苏春晖乳业有限公司 | Treatment method of milk production wastewater |
| CN103553281A (en) * | 2013-11-19 | 2014-02-05 | 广西新方向化学工业有限公司 | Innocent treatment of alcohol slops and application technique |
| CN104150714A (en) * | 2014-08-12 | 2014-11-19 | 蓝昆元 | Method for treating sulfur-containing waste produced by sugarhouse and producing compound bacterial fertilizer by using multiple species inoculant |
| CN106277587A (en) * | 2016-08-24 | 2017-01-04 | 江苏众胜灭菌设备科技有限公司 | The backwash filter method that a kind of effluent cycle processes |
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