CN1241840C - Waste water circulating and reusing process for starch processing - Google Patents
Waste water circulating and reusing process for starch processing Download PDFInfo
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- CN1241840C CN1241840C CN 02144742 CN02144742A CN1241840C CN 1241840 C CN1241840 C CN 1241840C CN 02144742 CN02144742 CN 02144742 CN 02144742 A CN02144742 A CN 02144742A CN 1241840 C CN1241840 C CN 1241840C
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Abstract
The present invention discloses a waste water circulating and reusing technology for a starch processing process. In the waste water circulating and reusing technology for a starch processing process, in the starch processing process, after the pH value of waste water after a maize conveying process is regulated to 5.0 to 5.2 by lime water, the waste water is flocculated and settled by a settler, and the treated water is repetitively and circularly utilized and is mainly used for the conveying working procedure of maize raw materials and the soaking working procedure of maize. Technological water obtained by a protein flotation working procedure is mainly used for working procedures, such as thickly and finely grinding the maize, washing germ, washing fiber, separating starch, etc., for replacing clear water, and water supply volume is greatly lowered. The water supply volume of the whole technology is steam volume discharged into the atmospheric layer in the drying process of a product, water is saved, and the water supply volume of every ton of starch is only from 1.2 to 2 m<3>. Compared with the water discharge of the treatment of the waste water, secondary pollution can not be caused because the waste water circulating and reusing technology for a starch processing process does not discharge water. The present invention can cause enterprises to achieve the purposes of environmental protection, enterprise synergy and energy consumption saving.
Description
Technical field
The present invention relates to the technical field of waste water reuse in a kind of starch course of processing.
Background technology
The starch course of processing is: corn is after living together reason clearly, send into bubble and steep material between truck, soak after carry out the thickness mill with corn after grinding Duan Jiashui, grind after fiber wash, starch separate and starch eddy flow technology after enter starch dewatered drying workshop section, dry starch product.
Corn is after living together reason clearly, and water is delivered between the bubble truck and steeped material, because influences such as sandstone, earth in the raw material corn are about 4m with the clear water amount in the process that feeds intake
3/ ton starch, and used clear water all discharges.Water mainly is the relieving haperacidity water between the bubble truck, and the clear water consumption is 1.5m
3/ ton starch.Carry out the thickness mill with corn after grinding Duan Jiashui, use clear water 2m approximately
3/ ton starch.Grind back fiber wash clear water 4m
3/ ton starch, separating spiral-flow technology is 3.5m with the clear water amount
3/ ton starch, enter starch dewatered drying workshop section behind the starch slurry separating spiral-flow, dry starch product.Whole process water consumption more approximately needs water 15m
3/ ton starch.
The state-of-the-art technology of the present waste water treatment of starch industry is that sewage discharged after reaching the national requirements emission standards after the waste water of starch discharging was handled by methods such as anaerobism, oxygen consumption, biochemistry.This waste water control method, the required equipment investment is big, and forms secondary pollution easily.
Summary of the invention
The object of the present invention is to provide waste water cycling and reutilization technology in a kind of starch course of processing, this technology with the process water otherwise processed after the recirculation utilization, reduce water consumption greatly.The water consumption of whole technology is discharged into the steam vapour amount in the atmospheric layer when being the product oven dry.Like this can water saving, water consumption only is 1.2-2m
3/ ton starch does not cause secondary pollution again; And enterprise can reach the purpose of protection environment, enterprise's synergy, energy efficient.
Waste water part in the starch course of processing of the present invention is transported to slurry tank, and a part is transported to the process water basin, and recycling is to each operation.
Concrete technical scheme of the present invention is:
The starch manufacturing procedure is: maize raw material gets finished product of starch after living together reason, conveying, screening, corn soaking, corn washing, screening, corn corase grind, corn correct grinding, fiber separation washing, seitan flash trapping stage, the separation of seitan secondary, starch ten secondary eddy flows, starch dehydration, starch oven dry, screening clearly.
Be used for sewage that corn carries and transfer pH value flocculating settling to the 5.0-5.2 with liming, primary water, the primary water Recycling is in carrying corn; Water mainly is with process water system sodium bisulfite soaking corn between the bubble truck, soak the rare corn steep liquor in back and carry out triple effect evaporation, water vapor that the corn steep liquor evaporation is produced and the used secondary steam of evaporation corn steep liquor are fully recycled, two imitate evaporation and condensation water removes slurry tank, zero imitates evaporation and condensation water removes ten second cyclones, and one imitates the recycling of evaporation and condensation water back boiler; Soak the back corn and wash, remove slurry tank after the primary water utilization, reuse after the sedimentation with water behind slurry tank processing back primary water and the corase grind top sieve sub-sieve; Slightly finish grind with corn after grinding Duan Jiashui, with process water (flowing water in the albumen flotation) in the process water basin; The section of grinding is extracted maize germ, washing will be used the process water in the process water basin during plumule screening, grind back fiber separation washing process water, the back scrubbing of fiber treatment press for extracting juice water is washed operation and is used for conveying fiber, and screening sieve back water all returns the fiber wash operation and is used for washing the fibre; Correct grinding and the corn starch liquid that fiber wash produced are sent to flash trapping stage and secondary separates and ten secondary eddy flow technologies, the albumen that the flash trapping stage machine is separated is through albumen flotation, albumen concentration, flowing water goes the recycling of process water basin in the flotation cell, the albumen concentrated filtrate goes the slurry tank recycling, and the light addition part of secondary separating machine process water is as the wash-down water of separating machine; Ten secondary eddy flow technologies are imitated evaporation and condensation water with clear water and water extracter siphon water and corn steep liquor zero, enter starch dewatered drying workshop section behind the starch slurry separating spiral-flow, sieve finished product starch.
The invention has the advantages that:
1. less investment, comparing gross investment with domestic modern technique is its 1/6 (250,000 tons of output need 6,000 ten thousand more than as the waste water control equipment that starts).
2. running expense is low, and the present invention regulates processing to process water in technology, reaches the working conditions of the process water in the technology, needs running expense hardly, as the sewage treatment facility that starts, about 40 yuan of/ton starch of sewage disposal expense.
3. reduce water consumption, water loss of the present invention only needs 1.5-2m
3/ ton, the former water 15m that needs
3/ ton reduces the water consumption greatly.
4. do not form secondary pollution,, can not form secondary pollution because discharge water is not compared with the waste water control draining.
Description of drawings
Fig. 1 is a waste water cycling and reutilization process flow sheet in the starch course of processing of the present invention.
Embodiment
Whole technology as shown in the figure, corn is after living together reason clearly, water is delivered between the bubble truck and is steeped material, there is gravity to sieve on the bubble batch can, sieve back water is used for carrying, the sewage that corn is carried with liming transfer pH value to 5.0-5.2 after the settling vessel flocculating settling, the primary water recycle is used to carry corn.Water mainly is the relieving haperacidity water between the bubble truck, and relieving haperacidity does not influence the immersion effect with process water system sodium bisulfite soaking corn, and has saved the energy of heating and wasting because of clear water.Soak the rare corn steep liquor in back and carry out triple effect evaporation, water vapor that the corn steep liquor evaporation is produced and the used secondary steam of evaporation corn steep liquor are fully recycled, two imitate evaporation and condensation water removes slurry tank, and zero imitates evaporation and condensation water removes ten second cyclones, and one imitates the recycling of evaporation and condensation water back boiler.It is the protein fodder product that product is produced in triple effect evaporation, and the production process emptying will be taken away about 1.02m
3/ ton starch.Water behind clarifying process water and the corase grind top sieve sub-sieve removed slurry tank after the process water utilization after the back blanking of bubble material was handled with slurry tank, reused after the sedimentation.Carry out thickness mill, about water 3m with corn after grinding Duan Jiashui
3/ ton starch is with process water basin process water (flowing water in the albumen flotation).The section of grinding is extracted maize germ, and washing will be used process water in the process water basin during plumule screening, and about 0.134m is taken away in the emptying of germ product water vapor
3/ ton starch.Grind back fiber separation washing process water 4.5m
3/ ton starch, the back scrubbing of fiber treatment press for extracting juice water is washed operation and is used for conveying fiber, and screening back water all returns the fiber wash operation and is used for washing the fibre.Correct grinding and the corn starch liquid that fiber wash produced are sent to flash trapping stage and secondary separates and ten secondary eddy flow technologies, the albumen that the flash trapping stage machine is separated is through albumen flotation, albumen concentration, flowing water removes the technology water pot in the flotation cell, the albumen concentrated filtrate removes slurry tank, and albumen dries that into protein product and water vapor emptying are taken away about 0.157m
3/ ton starch, the light addition part of secondary separating machine process water is as the wash-down water of separating machine.Ten secondary eddy flow technology clear water 1.2--2m
3/ ton starch and water extracter siphon water and corn steep liquor zero imitated evaporation and condensation water, enters starch dewatered drying workshop section behind the starch slurry separating spiral-flow, starch dehydration clear water 0.5m
3/ ton starch is used to the filter cloth that recoils, and the siphon water that dehydration produces returns ten second cyclone final stages, and overflow water returns ten second cyclone one-levels, and about 0.471m is taken away in starch product and oven dry emptying
3/ ton starch.
Claims (1)
1, waste water cycling and reutilization technology in a kind of starch course of processing, the starch manufacturing procedure is: maize raw material gets finished product of starch after living together reason, conveying, screening, corn soaking, corn washing, screening, corn corase grind, corn correct grinding, fiber separation washing, seitan flash trapping stage, the separation of seitan secondary, starch ten secondary eddy flows, starch dehydration, starch oven dry, screening clearly, it is characterized in that: corn is after living together reason clearly, be used for sewage that corn carries and transfer pH value flocculating settling to the 5.0-5.2 with liming, get primary water, the primary water Recycling is in carrying corn; Water is mainly with process water system sodium bisulfite soaking corn between the bubble truck, soak the rare corn steep liquor in back and carry out triple effect evaporation, water vapor that the corn steep liquor evaporation is produced and the used secondary steam of evaporation corn steep liquor are fully recycled, two imitate evaporation and condensation water removes slurry tank, zero imitates evaporation and condensation water removes ten second cyclones, and one imitates the recycling of evaporation and condensation water back boiler; Soak the back corn and wash, remove slurry tank after the primary water utilization, reuse after the sedimentation with water behind slurry tank primary water and the corase grind top sieve sub-sieve; Slightly finish grind with corn after grinding Duan Jiashui, with process water in the process water basin; The section of grinding is extracted maize germ, washing will be used the process water in the process water basin during plumule screening, grind back fiber separation washing process water, the back scrubbing of fiber treatment press for extracting juice water is washed operation and is used for conveying fiber, and screening sieve back water all returns the fiber wash operation and is used for washing the fibre; Correct grinding and the corn starch liquid that fiber wash produced are sent to flash trapping stage and secondary separates and ten secondary eddy flow technologies, the albumen that the flash trapping stage machine is separated is through albumen flotation, albumen concentration, flowing water goes the recycling of process water basin in the flotation cell, the albumen concentrated filtrate goes the slurry tank recycling, and the light addition part of secondary separating machine process water is as the wash-down water of separating machine; Ten secondary eddy flow technologies are imitated evaporation and condensation water with clear water and water extracter siphon water and corn steep liquor zero, enter starch dewatered drying workshop section behind the starch slurry separating spiral-flow, sieve finished product starch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02144742 CN1241840C (en) | 2002-12-07 | 2002-12-07 | Waste water circulating and reusing process for starch processing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02144742 CN1241840C (en) | 2002-12-07 | 2002-12-07 | Waste water circulating and reusing process for starch processing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1506320A CN1506320A (en) | 2004-06-23 |
| CN1241840C true CN1241840C (en) | 2006-02-15 |
Family
ID=34232086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02144742 Expired - Fee Related CN1241840C (en) | 2002-12-07 | 2002-12-07 | Waste water circulating and reusing process for starch processing |
Country Status (1)
| Country | Link |
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| CN (1) | CN1241840C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1880339B (en) * | 2005-06-13 | 2010-08-04 | 山东西王糖业有限公司 | Fine corn fiber evaporated concentration and extraction method for corn starch milk production |
| CN1879969B (en) * | 2005-06-13 | 2010-05-12 | 山东西王糖业有限公司 | Method for soaking corn using circulating water and condensed water in production |
| CN100371270C (en) * | 2005-10-15 | 2008-02-27 | 桂林工学院 | Combined treatment process for manioc producing effluent |
| CN100451036C (en) * | 2006-04-20 | 2009-01-14 | 山东阜丰发酵有限公司 | Process for production and precipitation of gluten from starch |
| CN101033258B (en) * | 2007-04-09 | 2010-05-19 | 菱花集团有限公司 | Production technique for starch without waste matter |
| CN102452740A (en) * | 2010-10-18 | 2012-05-16 | 中粮集团有限公司 | Treatment method of gluten water |
| CN104788577B (en) * | 2015-04-13 | 2017-05-17 | 宝鸡阜丰生物科技有限公司 | Method for recycling secondary steam generated in corn starch wet milling production process |
| CN112759179A (en) * | 2020-12-10 | 2021-05-07 | 肇庆焕发生物科技有限公司 | Water treatment process for corn starch processing wastewater |
| CN117247079B (en) * | 2023-11-17 | 2024-02-27 | 欧尚元智能装备有限公司 | Process water treatment system and process for starch production |
-
2002
- 2002-12-07 CN CN 02144742 patent/CN1241840C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1506320A (en) | 2004-06-23 |
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