CN102040297A - Method for decolorizing and recycling waste water from xylose production - Google Patents
Method for decolorizing and recycling waste water from xylose production Download PDFInfo
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- CN102040297A CN102040297A CN 201010298811 CN201010298811A CN102040297A CN 102040297 A CN102040297 A CN 102040297A CN 201010298811 CN201010298811 CN 201010298811 CN 201010298811 A CN201010298811 A CN 201010298811A CN 102040297 A CN102040297 A CN 102040297A
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Abstract
The invention discloses a method for decolorizing and recycling waste water from xylose production, which comprises: adding decolorizing agent into the waste water from xylose production, and quickly stirring for 1 second; delivering the waste water to a floatation tank mixer by a conveying pump, adding coagulant in a static mixer arranged at the outlet of the conveying pump till the coagulant concentration in the waste water reaches 50 to 100mg/l and allowing the coagulant to react in the mixer for about 1 second; adding flocculant till the flocculant concentration in the waste water is 10 to 90mg/l, reacting for about 2 to 3 seconds, and delivering the waste water to the floatation tank; and in the floatation tank in which alumen ustum and microscopic bubble float up together, removing floating mud by using a mud scraper, and discharging clear water from the middle of the floatation tank for recycling. In the method, the design is reasonable, the cost is low, the operation is convenient, and the treatment is complete; after decolorization, coagulation, flocculation and floatation treatment, the percentage of the decolority reaches more than or equal to 80 percent and the COD removal rate reaches more than or equal to 85 percent; and other ions are avoided as much as possible, the clear water can be completely recycled, the discharge amount of waste water is reduced, and water resource is saved. Thus, the method has a high promotion value.
Description
Technical field
The present invention relates to the xylose production technical field, particularly a kind of wood sugar waste water decoloring recycling method.
Background technology
Wood sugar mainly is to be raw material with agricultural byproducts such as corn cob, bagasse, cotton seed hulls, birch, through a kind of function sugar of operation preparations such as hot-water soak pre-treatment, hydrolysis, decolouring, purification, concentrated, centrifugal, packing.But xylose production is the pentosan in the hydrolysis of corncob, except that producing wood sugar, also makes impurity such as containing a large amount of colloids, pigment in the factory effluent in the hydrolytic process.At present, after wastewater biochemical is handled, COD (chemical oxygen demand (COD)) substantially can be up to standard to national secondary discharge standard, but the colourity multiple is still more than 150 times, people mouthful set up the clorox medicine system total row and decolour, but this method can only temporarily be decoloured, 0.5h after can restore again, restricted ordinary production, increased production cost, the while contaminate environment, and can not make the water reuse again.
Summary of the invention
Technical problem to be solved by this invention is to overcome the deficiencies in the prior art, provides to reduce chroma in waste water, COD and turbidity to greatest extent, and introduces a kind of wood sugar waste water decoloring of other ionic recycling method as few as possible.
Technical problem of the present invention adopts following technical proposals to solve:
A kind of wood sugar waste water decoloring recycling method is characterized in that being undertaken by following technological process:
A, in xylose production waste water, add discoloring agent, make that discoloring agent concentration is 10-90mg/l in the waste water, stirred fast 1 second;
B, stirring are after transferpump is squeezed into the air flotation pool mixing tank, establish static mixer in the transferpump outlet, coagulating agent adds at static mixer, the further coagulation of small-particle that the discoloring agent that the first step is added forms, make that coagulant concentration is 50-100mg/l in the waste water, about 1 second of coagulating agent reaction times in mixing tank;
C, adding flocculation agent, the concentration in the waste water is 10-90mg/l, the reaction times is about 2-3 second, enters air flotation pool;
D, in air flotation pool, alumen ustum combines come-up with microbubble, removes mud scum through mud scraper, clear water effluxes reuse in the middle of the air flotation pool.
Described discoloring agent is a kind of in polydiene propyl-dimethyl ammonia chloride, Dyhard RU 100-copolyoxymethylenes or acrylamide-diallyl dimethyl chlorination amine copolymer thing;
Described coagulating agent is a kind of in polymerize aluminum chloride, bodied ferric sulfate, aluminium iron polychloride or the ferrous sulfate;
Described flocculation agent is a kind of in polyacrylamide, Dyhard RU 100-copolyoxymethylenes, polydiene propyl-dimethyl ammonia chloride or the sodium cellulose glycolate.
The present invention is reasonable in design, with low cost, easy to operate, processing is thorough, after decolouring, coagulation, flocculation, air supporting are handled, chroma removal rate 〉=80%, COD clearance 〉=85%, and introduce other ion as few as possible, and fully can reuse, reduced wastewater discharge, save water resources, had promotional value widely.
Embodiment
Below in conjunction with being that embodiment is described in further details the present invention:
Implementation column 1
1, getting the colourity multiple is 150 (doubly), chemical oxygen demand (COD) (COD) is the wood sugar waste water 1L of 200mg/l, flow into intermediate pool, add polydiene propyl-dimethyl ammonia chloride discoloring agent 10mg, the concentration that makes discoloring agent is 10mg/l, make in the discoloring agent quaternary amine, tertiary amine etc. be with strong positive electricity superpolymer to combine with electronegative pigment group, macromole and other insolubles, stirred fast 1 second by hydrogen bond and Van der Waals force;
2, squeeze into the air flotation pool mixing tank through transferpump, add coagulant polymeric aluminium chloride 100mg at static mixer, the decolouring floc sedimentation is grown up, the concentration of coagulating agent is 100mg/l, about 1 second of coagulating agent reaction times in mixing tank;
3, add flocculation agent polyacrylamide 10mg, the concentration that makes flocculation agent is 10mg/l, and the reaction times is 2-3 second, enters air flotation pool;
4, in air flotation pool, alumen ustum combines come-up with microbubble, removes mud scum through mud scraper, and clear water effluxes reuse in the middle of air flotation pool.
Result by analysis: the colourity multiple is 35 times, and COD is 32mg/l.
Implementation column 2
1, getting the colourity multiple is 150 times, and COD is the wood sugar waste water 1L of 200mg/l, flows into intermediate pool, adds Dyhard RU 100-copolyoxymethylenes discoloring agent 90mg, and the concentration that makes discoloring agent is 90mg/l, stirs fast 1 second;
2, squeeze into the air flotation pool mixing tank through transferpump then, add coagulant polymeric ferric sulfate 50mg, the concentration of coagulating agent is 50mg/l, about 1 second of coagulating agent reaction times in mixing tank;
3, add flocculation agent Dyhard RU 100-copolyoxymethylenes 90mg then, the concentration of flocculation agent is 90mg/l, and the reaction times is 2-3 second, enters air flotation pool;
4, in air flotation pool, alumen ustum combines come-up with microbubble, removes mud scum through mud scraper, and clear water effluxes reuse in the middle of air flotation pool.
Result by analysis: the colourity multiple is 25 times, and COD is 30mg/l.
Implementation column 3
1, getting the colourity multiple is 150 times, and COD is the wood sugar waste water 1L of 200mg/l, flows into intermediate pool, adds acrylamide-diallyl dimethyl chlorination amine discoloring agent 30mg, and the concentration that makes discoloring agent is 30mg/l, stirs fast 1 second;
2, squeeze into the air flotation pool mixing tank through transferpump then, add coagulant polymeric aluminium chloride ferrum 80mg, the concentration of coagulating agent is 80mg/l, about 1 second of coagulating agent reaction times in mixing tank;
3, add flocculation agent polydiene propyl-dimethyl ammonia chloride 60mg then, the concentration of flocculation agent is 60mg/l, and the reaction times is 2-3 second, enters air flotation pool;
4, in air flotation pool, alumen ustum combines come-up with microbubble, removes mud scum through mud scraper, and clear water effluxes reuse in the middle of air flotation pool.
Result by analysis: the colourity multiple is 30 times, and COD is 33mg/l.
Implementation column 4
1, getting the colourity multiple is 150 times, COD is the wood sugar waste water 1L of 200mg/l, flow into intermediate pool, add polydiene propyl-dimethyl ammonia chloride discoloring agent 60mg, the concentration that makes discoloring agent is 60mg/l, make in the discoloring agent quaternary amine, tertiary amine etc. be with strong positive electricity superpolymer to combine with electronegative pigment group, macromole and other insolubles, stirred fast 1 second by hydrogen bond and Van der Waals force;
2, squeeze into the air flotation pool mixing tank through transferpump, add coagulating agent ferrous sulfate 70mg, the decolouring floc sedimentation is grown up, the concentration of coagulating agent is 70mg/l, about 1 second of coagulating agent reaction times in mixing tank;
3, add flocculation agent sodium cellulose glycolate 80mg, the concentration of flocculation agent is 80mg/l, and the reaction times is about 2-3 second, enters air flotation pool;
4, in air flotation pool, alumen ustum combines come-up with microbubble, removes mud scum through mud scraper, and clear water effluxes reuse in the middle of air flotation pool.
Result by analysis: the colourity multiple is 32 times, and COD is 30mg/l.
Claims (4)
1. wood sugar waste water decoloring recycling method is characterized in that being undertaken by following technological process:
A, in xylose production waste water, add discoloring agent, make that discoloring agent concentration is 10-90mg/l in the waste water, stirred fast 1 second;
B, stirring are after transferpump is squeezed into the air flotation pool mixing tank, establish static mixer in the transferpump outlet, coagulating agent adds at static mixer, the further coagulation of small-particle that the discoloring agent that the first step is added forms, make that coagulant concentration is 50-100mg/l in the waste water, about 1 second of coagulating agent reaction times in mixing tank;
C, adding flocculation agent, the concentration that makes flocculation agent in the waste water is 10-90mg/l, the reaction times is about 2-3 second, enters air flotation pool;
D, in air flotation pool, alumen ustum combines come-up with microbubble, removes mud scum through mud scraper, clear water effluxes reuse in the middle of the air flotation pool.
2. according to the described a kind of wood sugar waste water decoloring recycling method of claim 1, it is characterized in that described discoloring agent is a kind of in polydiene propyl-dimethyl ammonia chloride, Dyhard RU 100-copolyoxymethylenes or acrylamide-diallyl dimethyl chlorination amine copolymer thing;
3. according to the described a kind of wood sugar waste water decoloring recycling method of claim 1, it is characterized in that described coagulating agent is a kind of in polymerize aluminum chloride, bodied ferric sulfate, aluminium iron polychloride, the ferrous sulfate;
4. according to the described a kind of wood sugar waste water decoloring recycling method of claim 1, it is characterized in that described flocculation agent is a kind of in polyacrylamide, Dyhard RU 100-copolyoxymethylenes, polydiene propyl-dimethyl ammonia chloride, the sodium cellulose glycolate.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102988116A CN102040297B (en) | 2010-09-30 | 2010-09-30 | Method for decolorizing and recycling waste water from xylose production |
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| CN2010102988116A CN102040297B (en) | 2010-09-30 | 2010-09-30 | Method for decolorizing and recycling waste water from xylose production |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011506A (en) * | 2012-12-12 | 2013-04-03 | 山东绿健生物技术有限公司 | Treatment method of xylose production wastewater |
| CN104803462A (en) * | 2015-04-14 | 2015-07-29 | 南通华新环保设备工程有限公司 | Technological method for advanced sewage treatment |
| CN105347452A (en) * | 2016-01-04 | 2016-02-24 | 苏州巨联环保科研有限公司 | Method for decoloring printing and dyeing wastewater |
| CN106755614A (en) * | 2016-11-30 | 2017-05-31 | 山东福田药业有限公司 | A kind of method of xylose purity in raising xylose hydrolysis fluid |
| CN107034318A (en) * | 2016-11-30 | 2017-08-11 | 山东福田药业有限公司 | A kind of processing method of xylose hydrolysis fluid |
| CN109368849A (en) * | 2018-11-01 | 2019-02-22 | 深圳永清水务有限责任公司 | A kind of depth decoloration process of livestock breeding wastewater |
| CN110255753A (en) * | 2019-05-16 | 2019-09-20 | 中国皮革制鞋研究院有限公司 | The processing method of tannin extract waste water |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201240950Y (en) * | 2008-06-26 | 2009-05-20 | 山东福田药业有限公司 | Apparatus for recovering waste acid and waste alkali |
| CN101585613A (en) * | 2008-05-19 | 2009-11-25 | 李界文 | Medicament preparation process flow for purifying and treating wastewater from xylose production and use method thereof |
| CN101659490A (en) * | 2008-08-26 | 2010-03-03 | 尤长松 | Method for treating xylitol wastewater |
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2010
- 2010-09-30 CN CN2010102988116A patent/CN102040297B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101585613A (en) * | 2008-05-19 | 2009-11-25 | 李界文 | Medicament preparation process flow for purifying and treating wastewater from xylose production and use method thereof |
| CN201240950Y (en) * | 2008-06-26 | 2009-05-20 | 山东福田药业有限公司 | Apparatus for recovering waste acid and waste alkali |
| CN101659490A (en) * | 2008-08-26 | 2010-03-03 | 尤长松 | Method for treating xylitol wastewater |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103011506A (en) * | 2012-12-12 | 2013-04-03 | 山东绿健生物技术有限公司 | Treatment method of xylose production wastewater |
| CN104803462A (en) * | 2015-04-14 | 2015-07-29 | 南通华新环保设备工程有限公司 | Technological method for advanced sewage treatment |
| CN105347452A (en) * | 2016-01-04 | 2016-02-24 | 苏州巨联环保科研有限公司 | Method for decoloring printing and dyeing wastewater |
| CN105347452B (en) * | 2016-01-04 | 2018-07-31 | 苏州巨联环保科研有限公司 | Methods of Color Removal of Dyestuff Effluent |
| CN106755614A (en) * | 2016-11-30 | 2017-05-31 | 山东福田药业有限公司 | A kind of method of xylose purity in raising xylose hydrolysis fluid |
| CN107034318A (en) * | 2016-11-30 | 2017-08-11 | 山东福田药业有限公司 | A kind of processing method of xylose hydrolysis fluid |
| CN109368849A (en) * | 2018-11-01 | 2019-02-22 | 深圳永清水务有限责任公司 | A kind of depth decoloration process of livestock breeding wastewater |
| CN110255753A (en) * | 2019-05-16 | 2019-09-20 | 中国皮革制鞋研究院有限公司 | The processing method of tannin extract waste water |
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| CN102040297B (en) | 2012-07-25 |
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