CN104628181A - Wastewater treatment system for achieving zero emission of starch production wastewater - Google Patents
Wastewater treatment system for achieving zero emission of starch production wastewater Download PDFInfo
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- CN104628181A CN104628181A CN201410785774.XA CN201410785774A CN104628181A CN 104628181 A CN104628181 A CN 104628181A CN 201410785774 A CN201410785774 A CN 201410785774A CN 104628181 A CN104628181 A CN 104628181A
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Abstract
The invention discloses a wastewater treatment system for achieving zero emission of starch production wastewater and belongs to the field of treatment of starch production wastewater. According to the system, physical, chemical and membrane separation methods are combined and are applied to treatment of the starch production wastewater; a precipitation unit, a neutralization unit, a flocculation unit, a horizontal screw centrifugation unit, a microfiltration unit, an ultrafiltration unit, a nanofiltration unit and a reverse osmosis unit are combined to use; the pH is adjusted to be 6-8 by the neutralization unit and the flocculation unit; the temperature is raised to 40-45 DEG C; the starch production waste is added with a flocculating agent and then stands still for 30-45 minutes; the starch production waste is added with a defoaming agent and then is centrifugally separated by a horizontal screw centrifugal machine of which the axle distance is 2-2.5m and the rotating speed is 3800-3900r/min; suspended solids and insoluble substances are filtered by the microfiltration unit; macromolecular substances, such as water-soluble protein, which contribute to CODCr are removed by the ultrafiltration unit and the nanofiltration unit, so that the effluent reaches the requirements of partial procedures (such as potato cleaning) in early starch production; and the effluent is treated by the reverse osmosis unit and reaches the pure water requirements in a critical procedure, so that complete reuse and zero emission of the treated wastewater are achieved.
Description
Technical field
Belong to starch production wastewater process field.
Background technology
Use pure water in Starch Production critical process, can starch quality be significantly improved.Starch Production water consumption is large, a middle-size and small-size Starch Production factory, and use water just reached hundreds of and even go up kiloton every day, thus produced a large amount of waste water, contained a small amount of protein, starch, Mierocrystalline cellulose and other impurity, COD in these waste water
crcan 10 be reached
4mg/L; it is main contamination index; by so a large amount of factory effluents directly discharge can cause the severe contamination of environment; if reach reuse after production process water supply standard through process; both water saving, improves the performance of enterprises, again protection of the environment; improving social benefit, is the ultimate aim of Starch Production scale wastewater treatment.The treatment process of current starch production wastewater is roughly divided into Physical, chemical method and biological process.More advancedly at present be physics and chemistry method and use, occasionally have membrane sepn to participate in wherein, but all do not reach the level of zero release.
Summary of the invention
The present invention discloses a treatment system making starch production wastewater realize zero release, belongs to starch production wastewater process field.This system is by physics, chemistry and membrane separation process combine, apply to the wastewater treatment of Starch Production, by " the neutralization of " precipitation " unit, flocculation " unit, " sleeping spiral shell is centrifugal " unit, " micro-filtration " unit, " ultrafiltration " unit, " nanofiltration " unit and " reverse osmosis " unit combination use, its operational scheme is, the former water of waste water after precipitation, introduce " neutralization, flocculation " unit, regulate pH=6-8, heat to 40-45 DEG C, add after flocculation agent leaves standstill 30-45 minute, add defoamer again, enter " sleeping spiral shell is centrifugal " unit, require horizontal screw centrifuge wheelbase 2-2.5m, rotating speed 3800-3900r/min, the protein of water is not dissolved in through centrifugal segregation major part, Mierocrystalline cellulose and other impurity, remaining a small amount of small size suspended substance is removed again by " micro-filtration " unit, insolubles, removed COD by " ultrafiltration " unit and nano-filtration unit
crcontribute the protein etc. of larger dissolved in water, the dope of ultrafiltration and nanofiltration returns " neutralization, flocculation " unit.Now, the water outlet of " nanofiltration " unit has reached the water supply standard of production part of earlier stage operation (as cleaning potato), continue, through " reverse osmosis " cell processing, to make water outlet reach the requirement of production critical process pure water, thus full reuse, zero release after realizing wastewater treatment.
Accompanying drawing explanation
Fig. 1 is component units and the schema of " Waste Water Treatment making starch production wastewater realize zero release ".
Claims (5)
1. the Waste Water Treatment making starch production wastewater realize zero release, it is characterized in that, to " neutralize, flocculate " unit, " sleeping spiral shell is centrifugal " unit, " micro-filtration " unit, " ultrafiltration " unit, " nanofiltration " unit and " reverse osmosis " unit combination will use, reach the requirement of production critical process pure water after making starch production wastewater process, return production process and reuse.
2. " neutralization, flocculation " unit according to claim 1, is characterized in that, regulate pH=6-8, heat to 40-45 DEG C, add flocculation agent and leave standstill 30-45 minute.
3. " sleeping spiral shell centrifugal " unit according to claim 1 horizontal screw centrifuge be wheelbase 2-2.5m, rotating speed 3800-3900r/min.
4. the dense water of " ultrafiltration " unit according to claim 1, " nanofiltration " unit is incorporated to the water outlet of " precipitation " unit in process.
5. " reverse osmosis " unit according to claim 1, is characterized in that, when reuse water less demanding (as only for cleaning potato), can omit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410785774.XA CN104628181A (en) | 2014-12-18 | 2014-12-18 | Wastewater treatment system for achieving zero emission of starch production wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410785774.XA CN104628181A (en) | 2014-12-18 | 2014-12-18 | Wastewater treatment system for achieving zero emission of starch production wastewater |
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| Publication Number | Publication Date |
|---|---|
| CN104628181A true CN104628181A (en) | 2015-05-20 |
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| CN201410785774.XA Pending CN104628181A (en) | 2014-12-18 | 2014-12-18 | Wastewater treatment system for achieving zero emission of starch production wastewater |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105271576A (en) * | 2015-11-10 | 2016-01-27 | 中国科学院海洋研究所 | Wastewater treatment method in agar production |
| CN106277436A (en) * | 2016-08-18 | 2017-01-04 | 成都振中电气有限公司 | A kind of photovoltaic solar method for fetching water for remote districts |
| CN106746225A (en) * | 2016-12-28 | 2017-05-31 | 宁夏北国环保节能有限公司 | A kind of device and method for reclaiming waste water produced in potato starch manufacturing |
| CN106819699A (en) * | 2017-01-16 | 2017-06-13 | 北京联合大学 | Potato Normal juice, juice beverage and preparation method thereof |
| CN109626636A (en) * | 2018-12-24 | 2019-04-16 | 东莞市健源泉水处理科技有限公司 | A kind of extracting protein from waster water of starch and purification process |
| CN109896656A (en) * | 2017-12-07 | 2019-06-18 | 贺州学院 | A method of processing horseshoe amylum wastewater |
| CN114105352A (en) * | 2021-10-29 | 2022-03-01 | 甘肃宏腾油气装备制造有限公司 | Visual multistage drainage system |
-
2014
- 2014-12-18 CN CN201410785774.XA patent/CN104628181A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105271576A (en) * | 2015-11-10 | 2016-01-27 | 中国科学院海洋研究所 | Wastewater treatment method in agar production |
| CN106277436A (en) * | 2016-08-18 | 2017-01-04 | 成都振中电气有限公司 | A kind of photovoltaic solar method for fetching water for remote districts |
| CN106746225A (en) * | 2016-12-28 | 2017-05-31 | 宁夏北国环保节能有限公司 | A kind of device and method for reclaiming waste water produced in potato starch manufacturing |
| CN106819699A (en) * | 2017-01-16 | 2017-06-13 | 北京联合大学 | Potato Normal juice, juice beverage and preparation method thereof |
| CN109896656A (en) * | 2017-12-07 | 2019-06-18 | 贺州学院 | A method of processing horseshoe amylum wastewater |
| CN109896656B (en) * | 2017-12-07 | 2021-10-26 | 贺州学院 | Method for treating water chestnut starch processing wastewater |
| CN109626636A (en) * | 2018-12-24 | 2019-04-16 | 东莞市健源泉水处理科技有限公司 | A kind of extracting protein from waster water of starch and purification process |
| CN114105352A (en) * | 2021-10-29 | 2022-03-01 | 甘肃宏腾油气装备制造有限公司 | Visual multistage drainage system |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150520 |
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| WD01 | Invention patent application deemed withdrawn after publication |