CN1131179C - Bio-chemical process for treating waste liquid of molasses alcohol - Google Patents
Bio-chemical process for treating waste liquid of molasses alcohol Download PDFInfo
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- CN1131179C CN1131179C CN 00128938 CN00128938A CN1131179C CN 1131179 C CN1131179 C CN 1131179C CN 00128938 CN00128938 CN 00128938 CN 00128938 A CN00128938 A CN 00128938A CN 1131179 C CN1131179 C CN 1131179C
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Abstract
The present invention belongs to a method for treating waste molasses alcohol liquid by using a bio-chemical technology. According to the properties, such as ash separation and high acidity of the waste molasses alcohol liquid, the waste molasses alcohol liquid reaches discharge standards by culturing aerobic base materials with quick degradation ability after the organic substance degradation treatment in a multistage pool for removing harmful substances in the waste liquid. The treating method has the advantages of simple technology, low investment cost, convenient operation, high comprehensive utilization ratio and high economic benefit.
Description
Technical field
The invention belongs to a kind of method of utilizing the biochemical technology waste liquid of molasses alcohol.
Background technology
Along with the development of China's sucrose industry, quickened the production of molasses-spirit.And molasses-spirit gives off a large amount of waste liquids in process of production, and its 10-15 that is equivalent to alcohol output doubly.Factors such as these waste liquids contain the ash content height, and it is dark pigment, and are acid serious, and solid substance is many, and chemical oxygen demand (COD) (COD) soiling value is big cause serious harm to ecotope and human health.
For many years, relevant scientific research personnel has adopted various methods to handle research, comprises chemical method, physics method, biological process and hybrid system etc., has obtained certain effect.Handle with the steam raising oven dry common have (1), this method cost height, and service life of equipment is short, complex process.(2) handle with burn reclaiming potassium, patent 92103868.2 method for treatment of waste sacrose liquid for example, this method cost is higher, and equipment corrosion is serious, and the rate of recovery is lower.(3) anaerobically fermenting is handled, and this method is limited by processing condition, the production poor flexibility, and biogas sulphur removal difficulty, last treatment solution can not qualified discharge.(4) processing of circle pseudoyeast method is supported in good air culture, and this method cost is low, reclaim better, but last treatment solution can not qualified discharge.In addition also has quick-fried oxygen mud in conjunction with comprehensive treating process or the like.Above the whole bag of tricks all is applied in the production, but because of its defective that exists separately, can not reach the ideal effect in molasses alcohol waste liquid is handled.
Summary of the invention
The purpose of this invention is to provide a kind of at molasses alcohol waste liquid ash content height, acid big character, by cultivating a kind of aerobic type matrix material that quick degradation capability is arranged, carry out organic matter degradation handles through multistage pond, reach emission standard at last, can reduce cost the method for the simple biochemical technology waste liquid of molasses alcohol of processing method.
For achieving the above object, method steps of the present invention is as follows:
(1) preparation matrix material:
Chicken manure, sapropel, water are washed in 10: 1: 20 ratio, taking out one is positioned in the plane ware that contains peptone etc., under 38 ℃ of constant temperature, cultivated three days, the bacterium colony of getting good stalwartness places liquid nutrient medium, under 38 ℃ constant temperature, cultivated three days, pouring nutrient solution into prescription per-cent is to stir in the mixture of chicken manure 80-90%, sapropel 5-15%, alcohol slops 5-10%, and heap fermentation two months obtains the active sludge matrix material;
(2) handle in the starting pond:
Alcohol slops is used after 10 days to precipitation storage pond with pump delivery again and is pumped in the starting pond that natural pumice is housed, with 3-4 factory's recirculated water doubly alcohol slops is diluted, the matrix material that step (1) makes is thrown in the starting pond, injected volume is input in 1: 20 in the ratio with waste liquid for the first time, in the pond, add air continuously with pump, carried out first step organic matter degradation in lasting three days at normal temperatures and pressures, treatment solution flows to next process; After this injected volume of matrix material was by 1: 10000;
(3) digester is handled:
The treatment solution that will start in the 4th day in the pond flows into the digester that is separated into 12 Xiao Chi at least, places natural pumice in the digester, and continues bubbling air, continues 12 days, carries out the secondary organic matter degradation;
(4) settling tank is handled:
The treatment solution of step (3) is banished into settling tank, and throw out is carried back starting pond reuse in the bottom with the pump extraction, and the top treatment solution flows into subsequent processing;
(5) handle in the decolouring pond:
The effusive treatment solution of step (4) flows into the decolouring pond, and adding concentration is the high-molecular coagulant adopting of 5-10%
The ratio of described coagulating agent and treatment solution is 1: 1000, places and obtains supernatant liquor and flocculent precipitate after 12 hours;
(6) packing is handled:
The supernatant liquor that step (5) obtains can be recycled or qualified discharge, and flocculent precipitate is extracted out and can be fully utilized.
The method of biochemical technology waste liquid of molasses alcohol of the present invention, at molasses alcohol waste liquid ash content height, acid factor such as big, cultivating a kind ofly has the aerobic type of quick degradation capability to produce alkaline matrix material, with the natural pumice is absorption carrier, improve vigor by oxygenation, the organism in the waste liquid of degrading rapidly is through multiple-stage treatment, make discharge liquid up to standard, its last flocculent precipitate also can fully utilize.The cost of this treatment process is low, and technology is simple, and comprehensive utilization is made good use of, the economic benefit height.
Following table is the contrast of the parameters index before and after the liquid waste disposal.
| Sequence number | Title | Molasses alcohol waste liquid | Supernatant liquor after the processing |
| 1 | Concentration | 10-13BX° | 0.1BX° |
| 2 | PH | 4.0-4.3 | 7.0 about |
| 3 | COD | 10-15 ten thousand mg/L | 250 following mg/L |
| 4 | Colourity | Brown-black | Transparent |
| 5 | Suspended substance | 700-10000mg/L | Trace (up to standard) |
| 6 | Ash content | 11-19％ | Up to standard |
| 7 | Smell | Acid is smelly | Free from extraneous odour |
| 8 | Organism | 6-8％ | Up to standard |
| 9 | Other | Up to standard | |
| 10 | Effect | Harmful | Utilize useful again |
Description of drawings
Fig. 1 is a process flow sheet of the present invention;
Fig. 2 is a digester structural representation of the present invention;
Fig. 3 is that the A of Fig. 2 is to view.
Embodiment
Treatment process of the present invention is to handle and precipitate the decolouring processing through the organic matter degradation in what pond to make waste liquid reach emission standard.Its equipment can be the pond with Tu Tang, also can build cement pit, is equipped with ventilation pump and equipment such as pipeline and transferpump.The pond of building various different sizes by the size of producing the alcohol blowdown flow rate.To have a daily output of 30 tons grain distillery is example, and the waste liquid amount of discharge is 300-450m
3/ day, waste liquid is with 400m
3/ day calculating, 10 days amount can be stored in precipitation storage pond, and the capacity in precipitation storage pond is 4000m
3, the capacity in starting pond is 6000m
3, the capacity of digester is 24000m
3, the capacity of settling tank is 2000m
3, the capacity in decolouring pond is 2000m
3Suspension bracket is equipped with in the top in starting pond, is used to hang the mesh bag that natural pumice is housed.The construction of digester is shown in Fig. 2,3, a Da Chi 1 is separated into 12-25 Xiao Chi 2, water-in 7 and the water outlet 8 of Xiao Chi 2 stagger mutually, air line 4 is laid in bottom in the pond, the surface arrangement of air line 4 has a plurality of production wells 5, suspension bracket 9 is equipped with in the top of digester 1, with the mesh bag of lifting natural pumice 6.The bottom of settling tank has one to be funnelform outlet, and outlet connects transferpump.
Enforcement of the present invention at first prepares matrix material, with chicken manure, sapropel, water is washed in 10: 1: 20 ratio, taking out one then is positioned in the plane ware that contains peptone etc., under 38 ℃ of constant temperature, cultivated three days, the bacterium colony of getting good stalwartness places liquid nutrient medium, under 38 ℃ constant temperature, cultivated three days, pouring nutrient solution into per-cent is chicken manure 80-90%, sapropel 5-15%, stir in the mixture of alcohol slops 5-10%, heap fermentation two months, obtain the active sludge matrix material, contain anti-peracid in this material, the bacterial classification strong to the high-enriched organics degradability.Described sapropel adopts and has the soil that leaf is piled up through fermentation.After making matrix material, at first starting the pond handles, alcohol slops was parked 10 days to precipitation storage pond with pump delivery, again with being pumped into the starting pond, with 3-4 factory's recirculated water doubly waste liquid is diluted, starting is equipped with natural pumice in the pond, and effect is the bacterial classification of adsorbing base material, does not allow it flow away.Natural pumice mesh bag packing, 10 kilograms every bag, hang equably, natural pumice is immersed in the treatment solution, and about 2 tons of every pond consumption is provided with the air line of a plurality of production wells of surface arrangement at the bottom of the pond.Getting matrix material banishes in the starting pond after the dissolving fully in dissolving tank for 20 tons, in the pond, add air continuously with pump, oxygen supply and stirring, continue three days at normal temperatures and pressures, contain the matrix material of enriching bacterial classification and in the pond, turn out a large amount of bacterial classifications, waste liquid is carried out first step organic matter degradation.To start treatment solution in the pond on the 4th day banishes and carries out digester into digester and handle, treatment solution is from first Xiao Chi of digester each Xiao Chi that flows through lentamente, natural pumice installs with mesh bag and hangs on the suspension bracket, natural pumice is immersed in and adsorbs bacterial classification in the treatment solution, can not flow away along with flowing of liquid again.The air line of digester bottom constantly replenishes air, continues 12 days, carries out the secondary organic matter degradation.Treatment solution comes out to flow into settling tank from digester, and the throw out of this bottom, pond is withdrawn into the starting pond as a supplement with pump, and the top treatment solution flows into the decolouring pond and handles.The decolouring pond is built two and is used in turn.Treatment solution flows down in the decolouring pond, and adding concentration is the high-molecular coagulant adopting of 5-10%, and the ratio of described coagulating agent and treatment solution is 1: 1000, places after 12 hours, obtains supernatant liquor and flocculent precipitate.Supernatant liquor has reached the standard of entering, can do factory's recirculated water use or discharging, also can carry out comprehensive utilization and drink modifying agent or extraction antialcoholic drug etc. as feed factory batching modifying agent, fowl poultry, and flocculent precipitate can be made fertilizer, reodorant or river course stagnant water modifying agent etc.
Claims (1)
1, a kind of method of biochemical technology waste liquid of molasses alcohol, its processing step is as follows:
(1) preparation matrix material:
Chicken manure, sapropel, water are washed by 10: 1: 20 part by weight, taking out one is positioned in the plane ware that contains peptone, under 38 ℃ of constant temperature, cultivated three days, the bacterium colony of getting good stalwartness places liquid nutrient medium, under 38 ℃ constant temperature, cultivated three days, nutrient solution poured in the mixture that formulation weight per-cent is chicken manure 80-90%, sapropel 5-15%, alcohol slops 5-10% stir, heap fermentation two months obtains the active sludge matrix material;
(2) handle in the starting pond:
Alcohol slops is used after 10 days to precipitation storage pond with pump delivery again and is pumped in the starting pond that natural pumice is housed, with 3-4 factory's recirculated water doubly alcohol slops is diluted, the matrix material that step (1) makes is thrown in the starting pond, injected volume is input in 1: 20 by the part by weight with waste liquid for the first time, in the pond, add air continuously with pump, carried out first step organic matter degradation in lasting three days at normal temperatures and pressures, treatment solution flows to next process; After this injected volume of matrix material is 1: 10000 by weight;
(3) digester is handled:
Digester is to be separated at least 12 Xiao Chi by a Da Chi, water-in and the water outlet of Xiao Chi stagger mutually, lay air line in the bottom in pond, and the surface arrangement of air line has a plurality of production wells, suspension bracket is equipped with in the top of digester, and suspension bracket is hung oneself the mesh bag of natural pumice is housed; To start treatment solution in the pond on the 4th day and flow into each Xiao Chi in the digester successively, and constantly replenish air, continue 12 days, carry out the secondary organic matter degradation by air line;
(4) settling tank is handled:
The treatment solution of step (3) is banished into settling tank, and throw out is carried back starting pond reuse in the bottom with the pump extraction, and the top treatment solution flows into subsequent processing;
(5) handle in the decolouring pond:
The effusive treatment solution of step (4) flows into the decolouring pond, adds to be diluted with water to the high-molecular coagulant adopting that weight ratio concentration is 5-10%, and the part by weight of described coagulating agent and treatment solution is 1: 1000, places and obtains supernatant liquor and flocculent precipitate after 12 hours;
(6) packing is handled:
The supernatant liquor that step (5) obtains can be recycled or qualified discharge, and flocculent precipitate is extracted out and can be fully utilized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00128938 CN1131179C (en) | 2000-09-15 | 2000-09-15 | Bio-chemical process for treating waste liquid of molasses alcohol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 00128938 CN1131179C (en) | 2000-09-15 | 2000-09-15 | Bio-chemical process for treating waste liquid of molasses alcohol |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1343637A CN1343637A (en) | 2002-04-10 |
| CN1131179C true CN1131179C (en) | 2003-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 00128938 Expired - Fee Related CN1131179C (en) | 2000-09-15 | 2000-09-15 | Bio-chemical process for treating waste liquid of molasses alcohol |
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| CN (1) | CN1131179C (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101367678B (en) * | 2008-09-27 | 2011-09-21 | 哈尔滨工业大学 | Uses of amendment in sludge composting |
| CN101816280B (en) * | 2010-04-21 | 2011-08-10 | 桂林理工大学 | Method for preparing high-quality soil by fermenting Bayer process red mud and molasses alcohol waste liquid |
| CN102173532B (en) * | 2011-02-22 | 2013-03-20 | 雷耀隆 | Method for removing pigment of molasses alcohol wastewater by using biotechnology |
| CN102839128B (en) * | 2011-06-23 | 2013-10-23 | 广西大学 | Microorganism used for decolouring molasses alcohol waste water and decolouring method |
| CN102703516B (en) * | 2012-06-08 | 2014-07-30 | 广西平果凯特生物化工有限公司 | Alcohol cycle production technology by taking cassava and molasses as raw materials |
| CN103030211B (en) * | 2012-12-10 | 2014-01-15 | 广西大学 | Method for treating molasses alcohol wastewater |
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2000
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