CN101575371B - Method for adopting tannin to process silkworm cocoon processing wastewater and recycle sericin protein - Google Patents
Method for adopting tannin to process silkworm cocoon processing wastewater and recycle sericin protein Download PDFInfo
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- CN101575371B CN101575371B CN 200910114063 CN200910114063A CN101575371B CN 101575371 B CN101575371 B CN 101575371B CN 200910114063 CN200910114063 CN 200910114063 CN 200910114063 A CN200910114063 A CN 200910114063A CN 101575371 B CN101575371 B CN 101575371B
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- sericin
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Abstract
The invention discloses a method which adopts tannin to process silkworm cocoon processing wastewater and recycle sericin protein. The method is characterized in that: firstly, tannin solution is prepared by a conventional method; secondly, under the condition of stirring, sulphuric acid or hydrochloric acid is added to wastewater containing sericin; thirdly, under the condition of complete stirring, the tannin solution is added until the sericin protein is completely precipitated, and the turbid wastewater can be clarified; fourthly, standing is carried out for solid-liquid separation; fifthly, after sand in water is filtered, the wastewater reaches the grade 2 discharge standard and then is discharged or recycled; and sixthly, solid substances are cleaned and treated by alcohol to causethe solid-liquid separation, and after the solid is dried the sericin protein can be obtained. The method has the advantages that the tannin is the pure natural and environment-friendly protein flocculant and is available; tannin can fast and efficiently act with the sericin protein, the sericin protein can be separated out more completely than other methods, the formed floccule is easy to precipitate, the separation technology is simple, and the COD removal rate is high.
Description
Technical field
The present invention relates to the processing of organic waste water, specifically a kind of method with tannin processing silkworm cocoon processing wastewater and recovery sericin.
Background technology
The silk cocoon course of processing produces the high concentrated organic wastewater that contains a large amount of sericins, how effectively to process this type of waste water, simultaneously these natural resource of sericin is recycled, turn waste into wealth, and be silk cocoon processing industry problem in the urgent need to address.Existing method such as acid-precipitation method, chemical coagulation process etc., these methods exist that processing efficiency is low, running cost is high, the rate of recovery of sericin is not high and the impure defective such as many.
Summary of the invention
The objective of the invention is to disclose a kind of cost low, efficient is high, and technique is simple, and is easy and simple to handle, is convenient to the method with tannin processing silk cocoon processing silk gum waste water and recovery sericin of industrial applications.
The technical scheme that realizes the object of the invention is:
The appliable plant tannin is processed cocoon sericin waste water and is reclaimed sericin as flocculation agent, and concrete processing step comprises:
1, presses the tanning solution of well-established law compound concentration 1～20g/L;
2, containing the frigon waste water (COD of silk gum
CrBe 8000～35000mg/L), cocoon cooking or silk reeling wastewater (COD
CrBe in 150～700mg/L), add sulfuric acid or hydrochloric acid under the agitation condition, the pH value that makes waste water is 3～6;
3, add tanning solution under well-beaten state, complete to the sericin precipitation, waste water becomes clarification by muddiness and ends;
4, leave standstill, make solid-liquid separation;
5, the water outlet of step 4 COD after the sand filter
Cr＜200mg/L, discharging or reuse;
6, the solids of step 4 is cleaned, processed with alcohol, solid-liquid separation, solid drying namely obtains the higher sericin of purity.
Described vegatable tannin also claims plant polyphenol, comprises the polyphenol monomer or the mixture that extract from each position of each kind of plant, and the material that contains vegatable tannin, such as the juice of common various tannin extracts, vegetable tanning agent, the plant that contains tannin and fruit thereof etc.
Obtain tannin spirituous solution remaining behind the sericin, available distillation under vacuum is recovered alcohol and tannin respectively, for recycling.
The invention has the advantages that:
1, tannin is a class pure natural, eco-friendly protein flocculant, and wide material sources;
The effect of tannin and sericin rapidly and efficiently, sericin is separated out more complete than additive method, the flco of formation is easy to sedimentation, separating technology is simple, the COD clearance is high, can reach more than 90%;
3, can reclaim sericin, can further be processed as nutritious prod, cosmetic material, also can be used as feed or fertilizer;
4, the flocculation agent tannin can recycling use.
Embodiment:
Further specify technical scheme of the present invention below by 4 indefiniteness embodiment that enumerate.
Embodiment 1:
The present invention utilizes tannin to the cohesion of protein, reaches the purpose that reclaims sericin and administer waste water from silk gum waste water, and its processing step is as follows:
(1) contains the organic solvent solutions such as the water of tannin 20g/L or ethanol with tannin extract preparation;
(2) containing the frigon waste water of silk gum, adding certain density sulfuric acid or hydrochloric acid under the agitation condition, making the pH value of waste water be about 4;
(3) under fully stirring, adding tanning solution, complete to waste water clarification, silk gum flocculation sediment;
(4) leave standstill, make solid-liquid separation with sedimentation, filtration, the known method such as centrifugal;
(5) water outlet of step (4) reaches secondary discharge standard discharging or reuse after the sand filter further purifies;
(6) process with alcohol after the solids of step (4) is cleaned, solid-liquid separation, solid drying namely obtains the higher sericin of purity.
Embodiment 2:
(1) prepares the aqueous solution that contains tannin 8g/L with tannin extract;
(2) in containing the cocoon boiling wastewater of silk gum, add certain density sulfuric acid or hydrochloric acid under the agitation condition, make the pH value of waste water be about 5;
(3) add tanning solution fully stirring, complete to waste water clarification, silk gum flocculation sediment;
All the other are with embodiment 1.Waste water reaches secondary discharge standard discharging or reuse.
Embodiment 3:
(1) prepares the aqueous solution that contains tannin 1g/L with tannin extract;
(2) in containing the silk reeling wastewater of silk gum, add certain density sulfuric acid or hydrochloric acid under the agitation condition, make the pH value of waste water be about 5;
(3) add tanning solution fully stirring, complete to waste water clarification, silk gum flocculation sediment;
All the other are with embodiment 1.Waste water reaches secondary discharge standard discharging or reuse.
Embodiment 4:
The persimmon that (1) will contain tannin is squeezed the juice or is pulled an oar, and makes the concentration of tannin reach 6g/L;
(2) in silk gum waste water, add certain density sulfuric acid or hydrochloric acid under the agitation condition, make the pH value of waste water be about 4;
(3) add an amount of persimmon juice or slurry fully stirring, complete to waste water clarification, silk gum flocculation sediment;
All the other are with embodiment 1.Waste water reaches secondary discharge standard discharging or reuse.
Claims (1)
1. the application on the sericin of tannin in reclaiming silkworm cocoon processing wastewater is characterized in that:
1) with tannin extract or persimmon squeeze the juice, the pull an oar solution of preparation 1～20g/L concentration tannin;
2) containing the frigon waste water COD of silk gum
CrBe 8000～35000mg/L or silk reeling wastewater COD
CrBe 150～700mg/L, add sulfuric acid or hydrochloric acid under the agitation condition, the pH value that makes waste water is 3～6, then
3) add tanning solution under well-beaten state, complete to the sericin precipitation, waste water becomes clarification by muddiness and ends;
4) leave standstill, make solid-liquid separation;
5) water outlet step 4) is COD after the sand filter
Cr＜200mg/L, discharging or reuse;
6) with step 4) solids clean, process with alcohol, solid-liquid separation, solid drying namely obtains the higher sericin of purity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910114063 CN101575371B (en) | 2009-05-13 | 2009-05-13 | Method for adopting tannin to process silkworm cocoon processing wastewater and recycle sericin protein |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200910114063 CN101575371B (en) | 2009-05-13 | 2009-05-13 | Method for adopting tannin to process silkworm cocoon processing wastewater and recycle sericin protein |
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| CN101575371A CN101575371A (en) | 2009-11-11 |
| CN101575371B true CN101575371B (en) | 2013-09-18 |
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| CN 200910114063 Expired - Fee Related CN101575371B (en) | 2009-05-13 | 2009-05-13 | Method for adopting tannin to process silkworm cocoon processing wastewater and recycle sericin protein |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108047322A (en) * | 2017-12-19 | 2018-05-18 | 上海祁稷新材料发展有限公司 | A kind of preparation method and application of sericin |
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| CN101857319A (en) * | 2010-04-16 | 2010-10-13 | 钱永言 | Method for recycling protein from protein-contained waste water |
| CN104356752A (en) * | 2014-10-14 | 2015-02-18 | 安徽澳雅合金有限公司 | Offset printing ink with filature wastewater reused |
| CN106008689A (en) * | 2016-06-30 | 2016-10-12 | 浙江汇能生物股份有限公司 | Sericin recycling method |
| CN106279467A (en) * | 2016-09-21 | 2017-01-04 | 云南师范大学 | A kind of method utilizing tannic extract to fix natural rubber latex proteins matter |
| CN106745878A (en) * | 2016-11-30 | 2017-05-31 | 广西大学 | The recovery method of sericin in filature industrial wastewater |
| CN106804892A (en) * | 2017-01-26 | 2017-06-09 | 黔东南贵人蚕业开发有限公司 | A kind of method that silkworm chrysalis protein is extracted from fresh silk cocoon silk reeling wastewater |
| CN108221173A (en) * | 2018-01-26 | 2018-06-29 | 徐州光彩丝绵制品有限公司 | A kind of high-efficiency antimicrobial silk wadding quilt and preparation method thereof |
| CN108996741A (en) * | 2018-07-17 | 2018-12-14 | 舒城县宏通丝业有限公司 | A kind for the treatment of process of silk reeling wastewater |
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| CN101182062A (en) * | 2007-11-30 | 2008-05-21 | 重庆工学院 | Method for treating waste water containing sericin protein |
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|---|---|---|---|---|
| CN100999545A (en) * | 2007-01-12 | 2007-07-18 | 东华大学 | Process of recovering sericine by ion exchanging |
| CN101182062A (en) * | 2007-11-30 | 2008-05-21 | 重庆工学院 | Method for treating waste water containing sericin protein |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108047322A (en) * | 2017-12-19 | 2018-05-18 | 上海祁稷新材料发展有限公司 | A kind of preparation method and application of sericin |
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