CN1036530C - No-drain treatment method for waste liquid containing alcohol - Google Patents
No-drain treatment method for waste liquid containing alcohol Download PDFInfo
- Publication number
- CN1036530C CN1036530C CN 94100431 CN94100431A CN1036530C CN 1036530 C CN1036530 C CN 1036530C CN 94100431 CN94100431 CN 94100431 CN 94100431 A CN94100431 A CN 94100431A CN 1036530 C CN1036530 C CN 1036530C
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- waste liquid
- alcohol
- evaporating pot
- treatment method
- concentrated
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Abstract
The present invention relates to a zero-discharge treatment method for the waste liquid of alcohol. After the waste liquid of alcohol is adjusted to be neutral by adding alkali, solids are separated from liquid, filtrate is concentrated into concentrated solution of a value in the concentration range of 60 to 95BX by an evaporating pot and an intermittent type concentration pot, filter residue can be used for producing feed, and the concentrated solution can be used as a raw material for producing organic composite fertilizer, combustible gas, organic carbon, extracting caramel and glycerol, etc. The zero discharge and the comprehensive utilization of the waste liquid of the alcohol are realized. The method has the advantages of simple technology, less investment and capability of obtaining obvious economic benefit.
Description
The present invention is the treatment process that a kind of alcohol slops does not have discharging.
Alcohol slops belongs to one of severe contamination source, and its pH value is about 4.0, and chemical oxygen demand surpasses 100,000 mg/litre, is a kind of high dense useless organic waste water.At present, the method of domestic existing multiple processing alcohol slops, as produce fodder yeast, biogas fermentation, biochemical treatment, condensed combustion is handled or the like, the inventor has pointed out the weak point of present various treatment processs in the patent application of " alcohol waste liquid for sugar refinery recycle method " (application number 92110207.0), and provide a kind of and adopted the domestication yeast and with the method for alcohol slops as the molasses thinner that utilizes molasses production alcohol, significantly reduced the discharging of waste liquid amount, but this method still has the waste liquid that is not inconsistent emission standard to produce, do not effect a radical cure secondary pollution as yet, fail to realize making full use of of useful matter yet.
The purpose of this invention is to provide a kind of by improve alcohol slops concentration, to greatest extent fully utilize waste liquid, realize no discharging of waste liquid and the method for treating alcohol discharge liquid that production technique is simple, facility investment is few.
The present invention realizes its purpose as follows: alcohol slops is added alkali be adjusted to neutrality, carry out solid-liquid separation, filtrate imitates evaporating pot evaporation concentration to concentration through number, and to be that 60～95BX can store standby.It is the intermittently discharged jar that jar is imitated at the end of evaporating pot.First admission pressure of imitating evaporating pot I is 0.15～0.18MPa (absolute pressure, down together), and the juice stripping temperature is 105～115 ℃.
Handle alcohol slops with method of the present invention, evaporating pot incrustation is few, waste liquid can be concentrated into 60～95BX, and can utilize products such as concentrated solution production dark reddish brown, fertilizer, inflammable gas, extraction glycerine, no discharging of waste liquid, and facility investment is few, and tangible economic benefit and social benefit are arranged.
Further specify the present invention below in conjunction with accompanying drawing.
Fig. 1 is the process flow sheet of this method for treating alcohol discharge liquid.
Fig. 2 is the evaporating and concentrating process schema that adopts the quadruple effect evaporation in the treating processes.
After alcohol effluent in the alcohol production process is discharged by destilling tower, make its pH to wherein adding the alkali adjusting Value is 6.0～7.0. For reducing equipment incrustation, must carry out Separation of Solid and Liquid to waste liquid, can use the natural sedimentation tank Separate insoluble matter, also can be with centrifugal putting-down machine or flame filter press isolated by filtration. Filtrate is preheated to After 90～100 ℃, successively give each evaporator evaporation and concentration. Each evaporator all adopts conventional knot except the end effect tank Structure. The steam pressure of the input first effect evaporator I is 0.15～0.18MPa, and the juice stripping temperature is controlled at 105～115 ℃; Juice stripping temperature in second effect evaporator II and the triple effect evaporator III can reach respectively 100～105 ℃ and 97～102 ℃; The liquid waste concentration that concentrates out from three tanks can reach respectively: 13～15BX, 15～25BX, 25～35BX. The concentrating spent liquor that comes out from triple effect evaporator III enters batch (-type) Juice vapour in the evaporator IV, tank is pumped down to vacuum tube, and waste liquid continues to be concentrated in tank. Because having adopted intermittently The formula discharging modes can be concentrated into waste liquid any concentration discharging in 60～95BX scope as required. Between The formula evaporator of having a rest can adopt and be similar to the crystallizing tank structure of boiling sugared usefulness, and can a standby slack tank. After the processing Concentrating spent liquor can be used as the extraction dark reddish brown, glycerine, organic charcoal or the chemical products such as production fertilizer, fuel gas Raw material; Sediment in the Separation of Solid and Liquid process contains yeast, and is separable rear as feed. Like this, just real Showed taking full advantage of of waste liquid. The solidifying tank of all going here and there of evaporator vapour can utilize the solidifying hydro-thermal amount of vapour to continue evaporation, joint About steam. Filtrate after the Separation of Solid and Liquid also can utilize 20～40% to be used for the production of Substitute For Partial water dilution molasses Alcohol.
Embodiment 1: alcohol slops adds alkali, and to be adjusted to the pH value be 6.5, filtered 2 minutes with centrifugal putting-down machine, filtrate is preheated to 93 ℃, concentration is 10.0BX, pumps into first and imitates evaporating pot I, and the steam in the input jar is turbine back pressure gas, pressure is 0.16MPa, the juice stripping temperature is controlled to be 108 ℃, and waste liquid is concentrated into 13.5BX, delivers to second and imitates evaporating pot II, the juice stripping temperature is 101 ℃ in jar, waste liquid is concentrated into 23BX, delivers to triple effect evaporator III again, the juice stripping temperature is 99 ℃ in jar, waste liquid is concentrated into 34BX, make it enter the intermittent type evaporating pot, the juice stripping temperature is 77 ℃ in jar, draws the concentrating spent liquor that concentration is 76BX.
Embodiment 2: alcohol slops adds alkali, and to be adjusted to the pH value be 6.0, filtered 1.5 hours with the natural sedimentation jar, filtrate is preheated to 90 ℃, concentration is 10.0BX, pump into first and imitate evaporating pot I, the vapor pressure in the input jar is 0.15MPa, and the juice stripping temperature is controlled to be 105 ℃, waste liquid is concentrated into 13BX, deliver to second and imitate evaporating pot II, the juice stripping temperature is 100 ℃ in jar, and waste liquid is concentrated into 22BX, deliver to triple effect evaporator III again, the juice stripping temperature is 97 ℃ in jar, and waste liquid is concentrated into 33BX, makes it enter the intermittent type evaporating pot, the juice stripping temperature is 78 ℃ in jar, draws the concentrating spent liquor that concentration is 68BX.
Embodiment 3: alcohol slops adds alkali, and to be adjusted to the pH value be 7.0, filtered 15 minutes with flame filter press, filtrate is preheated to 95 ℃, concentration is 10.0BX, pump into first and imitate evaporating pot I, the vapor pressure in the input jar is 0.18MPa, and the juice stripping temperature is controlled to be 115 ℃, waste liquid is concentrated into 15BX, deliver to second and imitate evaporating pot II, the juice stripping temperature is 105 ℃ in jar, and waste liquid is concentrated to 25BX, deliver to triple effect evaporator III again, the juice stripping temperature is 101 ℃ in jar, and waste liquid is concentrated into 35BX, makes it enter the intermittent type evaporating pot, the juice stripping temperature is 68 ℃ in jar, draws the concentrating spent liquor that concentration is 82BX.
Claims (2)
1. no-drain treatment method for waste liquid containing alcohol, it is characterized in that at first adding alkali to alcohol slops makes its pH value be 6.0-7.0, again to the waste liquid solid-liquid separation, filtrate send number effect evaporating pot evaporation concentration to be used to extract dark reddish brown, glycerine, organic charcoal or to be used as the raw material of producing fertilizer, combustible gas to 60-95BX, and filter residue is as feed.
2. no-drain treatment method for waste liquid containing alcohol as claimed in claim 1 is characterized in that the end effect jar that wherein said number is imitated in the evaporating pot is the intermittent discharge evaporating pot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94100431 CN1036530C (en) | 1994-01-28 | 1994-01-28 | No-drain treatment method for waste liquid containing alcohol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 94100431 CN1036530C (en) | 1994-01-28 | 1994-01-28 | No-drain treatment method for waste liquid containing alcohol |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1091466A CN1091466A (en) | 1994-08-31 |
| CN1036530C true CN1036530C (en) | 1997-11-26 |
Family
ID=5029642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 94100431 Expired - Fee Related CN1036530C (en) | 1994-01-28 | 1994-01-28 | No-drain treatment method for waste liquid containing alcohol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1036530C (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103319021A (en) * | 2013-07-12 | 2013-09-25 | 冯光兴 | Alcohol waste liquid evaporator washing water processing method |
| CN105906136B (en) * | 2015-11-03 | 2018-11-13 | 云南全成环境工程有限公司 | Brewing spirit high concentration wastewater treatment method |
| CN108928943B (en) * | 2018-07-09 | 2021-08-20 | 格翎（上海）环境科技有限公司 | Method for treating alcohol waste liquid discharged from molasses alcohol factory |
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1994
- 1994-01-28 CN CN 94100431 patent/CN1036530C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1091466A (en) | 1994-08-31 |
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| C10 | Entry into substantive examination | ||
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| C53 | Correction of patent for invention or patent application | ||
| CB02 | Change of applicant information |
Co-applicant after: Zhengyu High-New Tech. Co., Ltd., Nanning Co-applicant before: Environment Science & Technology Development Co., Pingguo County |
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| COR | Change of bibliographic data |
Free format text: CORRECT: CO-APPLICANT; FROM: PINGGUO COUNTY ENVIRONMENTAL TECHNOLOGY DEVELOPMENT COMPANY TO: NANNING ZHENGYU HIGH-TECH CO., LTD. |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |