CN103274570A - Ramie sewage treatment process - Google Patents
Ramie sewage treatment process Download PDFInfo
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- CN103274570A CN103274570A CN2013102445166A CN201310244516A CN103274570A CN 103274570 A CN103274570 A CN 103274570A CN 2013102445166 A CN2013102445166 A CN 2013102445166A CN 201310244516 A CN201310244516 A CN 201310244516A CN 103274570 A CN103274570 A CN 103274570A
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Abstract
The invention discloses a ramie sewage treatment process which comprises the following process steps: A, pre-treating black liquid; B, treating black liquid sludge; C, pre-treating scotching wastewater; D, comprehensively treating wastewater; and E, treating biochemical sludge. The invention provides the ramie sewage treatment process, so that the difficult problem of difficulty for treating ramie wastewater is solved, the ramie wastewater is discharged according to the standard after comprehensive treatment, and the total amount of pollutant discharge is reduced; and meanwhile, most of the wastewater is recycled after being treated for reaching the standard, so that the water resources are saved and the sewage treatment and production costs are reduced.
Description
Technical field
The present invention relates to a kind of sewage treatment process, relate to the technology that a kind of sewage that produces when ramie is produced is handled specifically.
Background technology
Ramie is one of important textile raw material of China, and the ramie production history is long, have because of its product advantages such as well-pressed, the good permeability of dress extremely people like.China grass degumming is the preceding operation of flaxen fiber weaving, adopts chemical degumming law mostly, and most of producer of China still adopts chemical degumming law at present.Chemical degumming law is exactly to utilize NaOH under high temperature and certain pressure ramie to be carried out boiling to remove gelatinoid in the ramee.Ramie after coming unstuck namely is processed as degummed ramie through copying technologies such as fiber crops, pickling, washing, bleaching and oven dry.Degummed ramie can be used as spinning, woven fiber.Just can become textile raw material after ramie boiling-off, the washing, its production technique is as follows: ramie is by sour preimpregnation, enter boiling-off in the pot then, in boiling-off, add caustic soda and auxiliary agent, one boil, two discharge of wastewater after boiling, after boiling-off, the most of fiber in the ramie is separated, contain a large amount of pectin, half fiber, xylogen, alkali, cured matter and a large amount of suspended substance in the water of discharging, water is brownish black; COD content in the water is very high, alkali content height, difficult treatment.Ramie after the boiling-off also needs through beating fine, further comes unstuck, and the waste water of generation mainly contains organism and suspended substance; Such wastewater through organic matter content is lower.Ramie chemical Degumming waste water has characteristics such as concentration height, colourity height, basicity height and water temperature height, its complicated component, and contain the organism of a large amount of difficult degradations.
The ramie of China produces and processing mainly concentrates on ground such as Sichuan, Hunan, Hubei and Jiangxi.The come unstuck waste water of factory of specialty can be divided into three classes, and the first kind is the saucepan water of very high concentrations, and its CODcr value is generally 12,000-15, and 000mg/L is brown, and water temperature is the 80-90 degree, and the pH value is 12-14, good biodegradability.Second class is to wash fiber crops, copy middle section waters such as fiber crops and pickling, and this part middle section water water yield is big, and its CODcr value is generally 400-500mg/L, and it is acid that water quality is.The 3rd class is bleaching effluent, and its CODcr value is very low, generally is no more than 150mg/L, and contains a spot of oxygenant.Three kinds of glassware for drinking waters have that the change in concentration gradient is big, the organic content variable gradient is big and characteristics such as the colourity variable gradient is big, directly enter environment with the severe contamination water body.
Because the black liquor that chemical Degumming produces has characteristics such as organic contamination substrate concentration height, colourity height, basicity height, temperature height, waste water is more difficult.
Summary of the invention
In view of this, the invention provides a kind of ramie sewage treatment process, thereby solved the reluctant difficult problem of ramie waste water, thereby avoided the discharge of wastewater contaminate environment, make ramie waste water qualified discharge after comprehensive treating process, reduced gross contamination emission, simultaneously recycle is carried out in most of wastewater treatment after up to standard, save water resources, reduced sewage disposal and production cost.
For solving above technical problem, technical scheme of the present invention is:
The ramie sewage treatment process comprises following processing step:
A, black liquor pre-treatment;
。B, black liquor sludge treatment;
C, scutching Wastewater Pretreatment;
D, comprehensive wastewater are handled;
E, biochemical sludge are handled.
Black liquor in the steps A is biological degumming waste water, black liquor is introduced into black liquor equalizing tank homogeneous all measure after, entering spray chamber handles, water outlet enters the ash settling basin precipitation, entering the decolouring pond then decolours, water outlet enters the black liquor multifeed clarifier and precipitates again, then supernatant liquor enters black liquor hydrolysis acidification pool and the multistage anaerobic pond of black liquor, under the effect of anerobe, be tractable lower-molecular substance with unmanageable macromolecular substance biological hydrolysis, simultaneously long-chain organism in the waste water is converted into small organic molecule, make that dissolved organic matter significantly improves in the sewage, then water outlet enters the black liquor aeration tank, carries out aerobic treatment, enters the multistage vertical sedimentation tank of black liquor again, supernatant liquor through post precipitation enters a dosing pond and No. two dosing ponds successively, after further removing the suspended substance in the water, enter the vertical sedimentation tank precipitation again, supernatant liquor enters the comprehensive wastewater hydrolysis acidification pool and finishes the black liquor pre-treatment.
As preferably, utilize the tail gas that produces in the boiler for producing to spray in the described spray chamber; In described decolouring pond, add discoloring agent to the black liquor processing of decolouring, and in the black liquor aeration tank imports the pipeline of multistage vertical sedimentation tank, also be added into discoloring agent; In a dosing pond and No. two dosing ponds, add PAC and PAM respectively.
Mud is respectively the precipitated impurities mud in ash settling basin, decolouring pond, multifeed clarifier and the multistage vertical sedimentation tank among the step B.This mud imports filtering basin by pipeline and filters, after filtering wherein thick slag mix mutually with thin slag derivation and with coal.
The waste water that scutching waste water produces for cleaning ramie in producing among the step C, mainly be a large amount of numb suede staple fibre, suspended substance and a spot of dissolved organic matters in the waste water, therefore this waste water is introduced into the pulp water separating machine, after removing most of numb suede staple fibre, suspended substance, enter comprehensive wastewater vertical sedimentation tank precipitation again, supernatant liquor enters the comprehensive wastewater equalizing tank and regulates water quality and the water yield then, and then water outlet enters comprehensive hydrolysis acidification pool and pretreated black liquor mixes.
As preferably, described numb suede staple fibre and scutching waste water after separating will be recycled.
Comprehensive wastewater among the step D comprises mixed solution, dyeing waste water and the sanitary wastewater in the comprehensive wastewater hydrolysis acidification pool.Comprehensive wastewater enters comprehensive multistage mud backflow Aerobic Pond by pipeline, under the effect of aerobic bacteria, organism is decomposed into carbonic acid gas and water by aeration, waste water after the processing enters the suspended substance in the comprehensive wastewater vertical sedimentation tank removal water No. one, supernatant liquor enters No. three dosing ponds and No. four dosing ponds again, then mixed solution passes through multistage vertical sedimentation tank post precipitation again, supernatant liquor enters reuse pool, the most of reuse of the clear water in the reuse pool, residue clear water qualified discharge.
As preferably, described composite waste enters in No. three dosing ponds and No. four dosing ponds and adds PAM and PAC respectively.
Biochemical sludge in the step e comprises anaerobism in vertical sedimentation tank and the comprehensive wastewater vertical sedimentation tank and aerobic biochemical sludge, this biochemical sludge enters sludge thickener and concentrates, then the mud after concentrating is carried out sand and consider drying and other treatment, at last it is mixed mutually with coal.
Compared with prior art, the present invention has following beneficial effect:
(1) the present invention handles by black liquor sludge treatment and biochemical sludge the mud in the waste water and additive mud is handled, and with its with produce in the coal that uses carry out combination treatment, thereby the pollution of having avoided mud discharging to bring, improved the effect of coal burning simultaneously, thereby saved resource, further reduced the cost of producing required input;
(2) the present invention is by handling factory effluent, thereby effectively reduced pollutants in waste water matter, makes waste water reach emission standard, and environment is had high protection benefit, keeping and protect positive contribution the ecosystem;
(3) the present invention is by the processing to factory effluent, waste water is purified layer by layer, thereby make the waste water that reclaims to produce utilization again, thereby reduced in the ordinary production consumption to the water yield, and then further reduced the cost of producing required input, to promoting enterprise development positive effect is arranged;
(4) the present invention is simple in structure, and is easy to use, produces and follows cost of processing lower, can be good at producing on a large scale and using.
Description of drawings
Fig. 1 is process flow sheet of the present invention.
Description of drawings:
Embodiment
Core thinking of the present invention is, a kind of ramie sewage treatment process is provided, thereby solved the reluctant difficult problem of ramie waste water, make ramie waste water qualified discharge after comprehensive treating process, reduced gross contamination emission, simultaneously most of wastewater treatment is carried out recycle after up to standard, saved water resources, reduced sewage disposal and production cost.
In order to make those skilled in the art understand technical scheme of the present invention better, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Embodiment 1
As shown in Figure 1, the ramie sewage treatment process is characterized in that, comprises following processing step:
A, black liquor pre-treatment;
B, black liquor sludge treatment;
C, scutching Wastewater Pretreatment;
D, comprehensive wastewater are handled;
E, biochemical sludge are handled.
Black liquor in the steps A is biological degumming waste water, black liquor is introduced into black liquor equalizing tank homogeneous all measure after, entering spray chamber handles, water outlet enters the ash settling basin precipitation, entering the decolouring pond then decolours, water outlet enters the black liquor multifeed clarifier and precipitates again, then supernatant liquor enters black liquor hydrolysis acidification pool and the multistage anaerobic pond of black liquor, under the effect of anerobe, be tractable lower-molecular substance with unmanageable macromolecular substance biological hydrolysis, simultaneously long-chain organism in the waste water is converted into small organic molecule, make that dissolved organic matter significantly improves in the sewage, then water outlet enters the black liquor aeration tank, carries out aerobic treatment, enters the multistage vertical sedimentation tank of black liquor again, supernatant liquor through post precipitation enters a dosing pond and No. two dosing ponds successively, after further removing the suspended substance in the water, enter the vertical sedimentation tank precipitation again, supernatant liquor enters the comprehensive wastewater hydrolysis acidification pool and finishes the black liquor pre-treatment.
As preferably, utilize the tail gas that produces in the boiler for producing to spray in the described spray chamber; In described decolouring pond, add discoloring agent to the black liquor processing of decolouring, and in the black liquor aeration tank imports the pipeline of multistage vertical sedimentation tank, also be added into discoloring agent; In a dosing pond and No. two dosing ponds, add PAC and PAM respectively.
Mud is respectively ash settling basin, the precipitated impurities mud of decolouring in pond, multifeed clarifier and the multistage vertical sedimentation tank among the step B, and this mud imports filtering basin by pipeline and filters, after filtering wherein thick slag mix mutually with slag derivation carefully and with coal.
Scutching waste water cleans the waste water that ramie produces in producing among the step C, mainly be a large amount of numb suede staple fibre, suspended substance and a spot of dissolved organic matters in the waste water, therefore this waste water is introduced into the pulp water separating machine, remove most of numb suede staple fibre,, behind the suspended substance, enter comprehensive wastewater vertical sedimentation tank precipitation again, supernatant liquor enters the comprehensive wastewater equalizing tank and regulates water quality and the water yield then, and then water outlet enters comprehensive hydrolysis acidification pool and pretreated black liquor mixes.
As preferably, described numb suede and scutching waste water after separating will be recycled.
Comprehensive wastewater among the step D comprises the mixed solution in the comprehensive wastewater hydrolysis acidification pool, dyeing waste water and sanitary wastewater, comprehensive wastewater enters comprehensive multistage mud backflow Aerobic Pond by pipeline, under the effect of aerobic bacteria, organism is decomposed into carbonic acid gas and water by aeration, waste water after the processing enters the suspended substance in the comprehensive wastewater vertical sedimentation tank removal water No. one, supernatant liquor enters No. three dosing ponds and No. four dosing ponds again, then mixed solution passes through multistage vertical sedimentation tank post precipitation again, supernatant liquor enters reuse pool, the most of reuse of clear water in the reuse pool, residue clear water qualified discharge.
As preferably, described composite waste enters in No. three dosing ponds and No. four dosing ponds and adds PAM and PAC respectively.
Biochemical sludge in the step e comprises anaerobism in vertical sedimentation tank and the comprehensive wastewater vertical sedimentation tank and aerobic biochemical sludge, this biochemical sludge enters sludge thickener and concentrates, then the mud after concentrating is carried out sand and consider drying and other treatment, at last it is mixed mutually with coal.
Only be preferred implementation of the present invention below, should be pointed out that above-mentioned preferred implementation should not be considered as limitation of the present invention, protection scope of the present invention should be as the criterion with claim institute restricted portion.For those skilled in the art, without departing from the spirit and scope of the present invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. the ramie sewage treatment process is characterized in that, comprises following processing step:
A, black liquor pre-treatment;
B, black liquor sludge treatment;
C, scutching Wastewater Pretreatment;
D, comprehensive wastewater are handled;
E, biochemical sludge are handled.
2. ramie sewage treatment process according to claim 1, it is characterized in that, black liquor in the steps A is biological degumming waste water, black liquor is introduced into black liquor equalizing tank homogeneous all measure after, entering spray chamber handles, water outlet enters the ash settling basin precipitation, entering the decolouring pond then decolours, water outlet enters the black liquor multifeed clarifier and precipitates again, then supernatant liquor enters black liquor hydrolysis acidification pool and the multistage anaerobic pond of black liquor, under the effect of anerobe, be tractable lower-molecular substance with unmanageable macromolecular substance biological hydrolysis, simultaneously long-chain organism in the waste water is converted into small organic molecule, make that dissolved organic matter significantly improves in the sewage, then water outlet enters the black liquor aeration tank, carries out aerobic treatment, enters the multistage vertical sedimentation tank of black liquor again, supernatant liquor through post precipitation enters a dosing pond and No. two dosing ponds successively, after further removing the suspended substance in the water, enter the vertical sedimentation tank precipitation again, supernatant liquor enters the comprehensive wastewater hydrolysis acidification pool and finishes the black liquor pre-treatment.
3. ramie sewage treatment process according to claim 2 is characterized in that, utilizes the tail gas that produces in the boiler for producing to spray in the described spray chamber; In described decolouring pond, add discoloring agent to the black liquor processing of decolouring, and in the black liquor aeration tank imports the pipeline of multistage vertical sedimentation tank, also be added into discoloring agent; In a dosing pond and No. two dosing ponds, add PAC and PAM respectively.
4. ramie sewage treatment process according to claim 3, it is characterized in that, mud is respectively the precipitated impurities mud in ash settling basin, decolouring pond, multifeed clarifier and the multistage vertical sedimentation tank among the step B, this mud imports filtering basin by pipeline and filters, after filtering wherein thick slag mix mutually with thin slag derivation and with coal.
5. ramie sewage treatment process according to claim 4, it is characterized in that, scutching waste water cleans the waste water that ramie produces in producing among the step C, mainly be a large amount of numb suede staple fibre, suspended substance and a spot of dissolved organic matters in the waste water, therefore this waste water is introduced into the pulp water separating machine, after removing most of numb suede staple fibre, suspended substance, enter comprehensive wastewater vertical sedimentation tank precipitation again, supernatant liquor enters the comprehensive wastewater equalizing tank and regulates water quality and the water yield then, and then water outlet enters comprehensive hydrolysis acidification pool and pretreated black liquor mixes.
6. ramie sewage treatment process according to claim 5 is characterized in that, described numb suede staple fibre and scutching waste water after separating will be recycled.
7. ramie sewage treatment process according to claim 6 is characterized in that, the comprehensive wastewater among the step D comprises mixed solution, dyeing waste water and the sanitary wastewater in the comprehensive wastewater hydrolysis acidification pool.Comprehensive wastewater enters comprehensive multistage mud backflow Aerobic Pond by pipeline, under the effect of aerobic bacteria, organism is decomposed into carbonic acid gas and water by aeration, waste water after the processing enters the suspended substance in the comprehensive wastewater vertical sedimentation tank removal water No. one, supernatant liquor enters No. three dosing ponds and No. four dosing ponds again, then mixed solution passes through multistage vertical sedimentation tank post precipitation again, supernatant liquor enters reuse pool, the most of reuse of the clear water in the reuse pool, residue clear water qualified discharge.
8. ramie sewage treatment process according to claim 7 is characterized in that, described composite waste enters in No. three dosing ponds and No. four dosing ponds and adds PAM and PAC respectively.
9. ramie sewage treatment process according to claim 8 is characterized in that, the biochemical sludge in the step e comprises anaerobism in vertical sedimentation tank and the comprehensive wastewater vertical sedimentation tank and aerobic biochemical sludge.This biochemical sludge enters sludge thickener and concentrates, and then the mud after concentrating is carried out sand and considers drying and other treatment, at last it is mixed mutually with coal.
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| CN201310244516.6A CN103274570B (en) | 2013-06-19 | 2013-06-19 | Ramie sewage treatment process |
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| CN201310244516.6A CN103274570B (en) | 2013-06-19 | 2013-06-19 | Ramie sewage treatment process |
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| CN103274570A true CN103274570A (en) | 2013-09-04 |
| CN103274570B CN103274570B (en) | 2015-04-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104150646A (en) * | 2014-09-02 | 2014-11-19 | 江西恩达麻世纪科技股份有限公司 | Pretreatment method of ramie degumming wastewater and device adopting same |
| CN113441525A (en) * | 2021-07-07 | 2021-09-28 | 湖南迪亚环境工程有限公司 | Comprehensive treatment system and method for kitchen waste |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1821111A (en) * | 2006-03-09 | 2006-08-23 | 湖北大学 | Treating and reusing method for ramie degumming waste water |
| CN102863116A (en) * | 2012-07-12 | 2013-01-09 | 湖南润久科技有限公司 | Method and device for repeatedly utilizing ramie biological degumming waste water |
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2013
- 2013-06-19 CN CN201310244516.6A patent/CN103274570B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1821111A (en) * | 2006-03-09 | 2006-08-23 | 湖北大学 | Treating and reusing method for ramie degumming waste water |
| CN102863116A (en) * | 2012-07-12 | 2013-01-09 | 湖南润久科技有限公司 | Method and device for repeatedly utilizing ramie biological degumming waste water |
Non-Patent Citations (2)
| Title |
|---|
| 吴江等: "物化与生化组合工艺在苎麻脱胶废水处理工程中的应用", 《中国农学通报》 * |
| 黄鹏: "物化-生化-深度处理工艺处理苎麻脱胶废水", 《四川环境》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104150646A (en) * | 2014-09-02 | 2014-11-19 | 江西恩达麻世纪科技股份有限公司 | Pretreatment method of ramie degumming wastewater and device adopting same |
| CN113441525A (en) * | 2021-07-07 | 2021-09-28 | 湖南迪亚环境工程有限公司 | Comprehensive treatment system and method for kitchen waste |
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| CN103274570B (en) | 2015-04-15 |
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