CN102923912A - Method for comprehensively treating sewage of chemical fiber oiling agents in production plants - Google Patents
Method for comprehensively treating sewage of chemical fiber oiling agents in production plants Download PDFInfo
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- CN102923912A CN102923912A CN2012104399929A CN201210439992A CN102923912A CN 102923912 A CN102923912 A CN 102923912A CN 2012104399929 A CN2012104399929 A CN 2012104399929A CN 201210439992 A CN201210439992 A CN 201210439992A CN 102923912 A CN102923912 A CN 102923912A
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Abstract
The invention discloses a method for comprehensively treating sewage of chemical fiber oiling agents in production plants. The method mainly includes the following steps: mineral oil is recovered from the chemical fiber oiling agents through acidification; the acidified lower clear liquid is performed with a Fenton reaction and then enters a middle water tank to be homogenized with washing water in a workshop and run-off rain water of oiliness paths; suspended materials and small elaioplast in the homogenized sewage are removed through an air floating pool; the water discharged from the air floating pool and sanitary sewage together enter a comprehensive adjusting tank to be treated by an anaerobic baffle pool, an aerobiotic pool and a settling pool, and then outlet water can meet the B-level wastewater quality standards for discharge to municipal sewers (CJ3082-2010). The method for comprehensively treating sewage of chemical fiber oiling agents is convenient to manage and maintain, capable of adapting to large water quality fluctuation, stable and reliable in treating effect and moderate in operation cost.
Description
Technical field
The present invention relates to a kind of integrated conduct method of sewage, especially the integrated conduct method of preparation medium production plant area sewage.
Background technology
Preparation medium is one of auxiliary agent essential in synthon manufacturing and the spinning processing process thereof, and its effect is to make fiber have good smoothness, convergency, static resistance, satisfies the requirement of fiber process.Along with the development of synthetic fiber industry, many kinds, short run, high-speed stage have been moved towards in synthon production, need a large amount of novel finishes that cooperate with it.2011, the domestic synthetic fiber annual production reached more than 3,000 ten thousand tons, and approximately 300,000 tons of year consumption finishes comprise terylene finish, polypropylene fibre finish, polyamide fibre and acrylic fibers finish, other finishes etc.Preparation medium generally is comprised of the mineral oil (white oil, machine oil) of various viscositys, emulsifying agent (alkylphenol polyoxyethylene), static inhibitor (alkylphosphonic acid carboxylic acid sylvite), smooth agent (Acrawax, polyethers), silicone oil, the anti-agent of splashing etc.These molecular weight of material are large, and mostly with various branched groups, the difficulty of biochemical degradation is quite large.Preparation medium manufacturing enterprise can produce the waste water that contains in a large number preparation medium in the product vessel process of washing and recycling, this kind Wastewater Pollutant composition overwhelming majority is mineral oil.In addition, evaporating, emitting, dripping or leaking of liquid or gas is to road in the on-site product loading and unloading of preparation medium manufacturing enterprise, the transportation, and oil-containing road runoff sewage, the workshop sanitary sewage synthetic or washing water and on-site that washes away generation that rains also is the sewage that the chemical plant must be processed.Generally speaking, there is the sewage of 4 kinds of different sourcess in preparation medium production plant area: the preparation medium waste water that the washing and recycling product vessel produces, synthetic workshop washing water, the oil-containing rainwater of road runoff generation and the sanitary sewage of on-site need to consider it is processed.
Preparation medium waste water is because Pollutant levels high (COD concentration is up to 1,000,000 mg/L), pollutes the most seriously, and the need emphasis is processed, and the treatment process of oily(waste)water is continued to use in the processing of such waste water mostly, mainly contains quiet heavy oil removal method, dissolved air flotation etc.Quiet heavy oil removal method have advantages of need not to add medicament, cost is low, but the shortcoming of inferior separating effect is arranged, the wastewater treatment difficulty is still very large after the oil removal; Dissolved air flotation relatively is suitable for the processing of lower concentration oily(waste)water, and is relatively poor for the highly concentrated oil-bearing wastewater effect.
Therefore, for the water quality characteristics of preparation medium waste water, and combination on-site other different sources sewage, develop a kind of integrated conduct method of can the high efficiente callback mineral oil, can satisfy on-site sewage qualified discharge again and extremely be necessary.
Summary of the invention
The integrated conduct method that the purpose of this invention is to provide a kind of preparation medium production plant area sewage is realized preparation medium waste water mineral recovery of oil, solves the comprehensive treating process difficult problem of the various different sources sewage of production plant area.
The integrated conduct method of preparation medium production of the present invention plant area sewage, concrete steps are as follows:
(1) preparation medium waste water enters the acid out tank, add sulfuric acid and heat to 55 ~ 65 ℃ and carry out breakdown of emulsion pre-treatment 2 ~ 4 h, the volume ratio of sulfuric acid and preparation medium waste water is 0.4% ~ 1.0%, most mineral oil are separated from waste water, acid out tank top mineral oil enters the recovery of oil pond, acid out tank bottom clear liquid enters Fenton (Fenton) retort under action of gravity, liquid pH to 3.0 ~ 3.5 in the regulating tank, and to wherein adding mass concentration 30% hydrogen peroxide and ferrous sulfate, the mol ratio of hydrogen peroxide and ferrous sulfate is 8 ~ 10, and the reaction times is 2 ~ 4 h;
(2) water outlet of Fenton's reaction tank, workshop washing water and oil-containing road runoff rainwater are all sent into intermediate pool, in intermediate pool, add NaOH adjusting pH to 8～8.5, in intermediate pool, generate the ironic hydroxide floss;
(3) the sewage mixed solution of intermediate pool enters air flotation pool, utilizes the adhesive attraction of ironic hydroxide floss and elaioleucite that suspended substance and little elaioleucite are separated from sewage under the micro-bubble carrier that air flotation pool disperses;
(4) air flotation pool water outlet and sanitary sewage enter the comprehensive adjustment pond, and the water yield of carrying out of different sources sewage is regulated and the water quality homogenize;
(5) sewage of comprehensive adjustment pond output enters the anaerobic baffle plate pond through Impulsive tank with pulse mode, carry out intermittent aeration in the anaerobic baffle plate pond, enter Aerobic Pond behind hydraulic detention time 3 ~ 4 d, hydraulic detention time 2 ~ 3 d at Aerobic Pond, the degraded most organic, enter again settling tank, after the settling tank gravity separation, reach emission standard water quality and enter municipal sewage system; Settling tank part precipitating sludge is back to Aerobic Pond, another part mud and the mud of discharging from air flotation pool and anaerobic baffle plate pond all enter sludge thickener and concentrate, mud after concentrated is transported outward after the plate-and-frame filter press press filtration, and filtrate enters intermediate pool and processes.
In the step of the present invention (1), the built-in oil level inductive probe of described acid out tank, temp probe, heating coil and stirrer, acid out tank outsourcing lagging material, and the PLC control device is installed, tank body side bottommost arranges lower clear liquid water outlet, every 0.1m the electromagnetic valve water outlet is set from top to bottom; The PLC control device is realized the water outlet of clear liquid under mineral oil and the acid out by the switch of oil level inductive probe feedback signal control electromagnetic valve.
In order to keep the sludge concentration in anaerobic baffle plate pond and the Aerobic Pond, usually the bamboo filler can be set all in anaerobic baffle plate pond and Aerobic Pond.
The advantage of the integrated conduct method of preparation medium production of the present invention plant area sewage is:
(1) waste oil reclaims fully, realizes the utilization of waste effectively resource recycling.This technique can reclaim the low viscosity mineral oil in the preparation medium waste water fully, can realize waste material efficient circulation recycling, and reduces cost for wastewater treatment.
(2) take full advantage of different sources sewage quality characteristics, organic combination is produced the various sewage of on-site, and effluent quality is good.Preparation medium waste water COD concentration after the acid out breakdown of emulsion is processed is still higher, and shortage nutritive substance, present method is namely utilized on-site sanitary sewage extra-nutrition material, and workshop washing water and oil-containing road runoff rainwater are carried out after the air supporting alleviating the inhibition of high COD concentration as dilution water.Through integrating on-site different sources sewage, solve the difficult problem of the difficult qualified discharge of high density preparation medium waste water, stable effluent quality is up to standard, reaches " sewage enters the town sewer water quality standard " (CJ3082-2010) B grade standard.
(3) strong to degradation capability poisonous, difficult degradation chemical fibre oiling worker waste water.Selecting anaerobism fixed bed filler is that anaerobic baffle plate is processed main process, the bamboo packing layer is set therein to be held and stays anaerobic sludge, and intake with pulse mode, can guarantee that effective hydraulic detention time is longer, the dead angle is few, mud contacts more abundant with pollutent, reach to tame to hold to stay the anaerobic sludge poisonous, difficult degradation chemical fibre oiling worker waste water of degrading, and this type of waste water is had stronger degradation capability.
Description of drawings
Fig. 1 is process flow sheet of the present invention.
Embodiment
The invention will be further described below in conjunction with accompanying drawing 1 and example.
Take certain production plant area of chemical fibre oil manufacturing enterprise sewage treatment process as example, in this production plant area of chemical fibre oil manufacturing enterprise sewage treatment process, preparation medium waste water generation is about 2 tons/day, and the COD maximum concentration can reach 1 * 10
6Mg/L, in addition, plant area lavatory and dining room can produce sanitary sewage and be about 7 tons/day, and the COD maximum concentration is 500 mg/L; Workshop washing water generation is about 2 tons/day, and the COD maximum concentration is 1700 mg/L; Finished product loading place and truck parking are because the oil-containing road runoff sewage quantity that produces that rains is about 9 tons/day.
Technical process such as Fig. 1, preparation medium waste water at first enters the acid out tank, its built-in oil level inductive probe, temp probe, heating coil and stirrer; The outsourcing lagging material, and the PLC control device is installed, tank body side bottommost arranges lower clear liquid water outlet, every 0.1m the electromagnetic valve water outlet is set from top to bottom; The PLC control device is realized the water outlet of clear liquid under mineral oil and the acid out by the switch of oil level inductive probe feedback signal control electromagnetic valve.After preparation medium waste water enters the acid out tank, add sulfuric acid and heat to 60 ℃ and carry out breakdown of emulsion pre-treatment 4 h, the volume ratio of sulfuric acid and preparation medium waste water is 0.4%, after the reaction, overwhelming majority mineral oil is separated from waste water, reclaim the mineral oil in the waste water, significantly reduce organic concentration in the waste water.Acid out tank top mineral oil enters the recovery of oil pond, acid out tank bottom clear liquid enters the Fenton retort under action of gravity, utilize the Fenton oxidation style to improve the biochemical of waste water, liquid pH to 3.0 in the regulating tank, to wherein adding mass concentration 30% hydrogen peroxide and ferrous sulfate, the mol ratio of hydrogen peroxide and ferrous sulfate is 10, reaction times is 4 h, preparation medium waste water is behind acid out, the COD clearance is 90% ~ 95%, the approximately recyclable 0.5 ton of waste oil of per 1 ton of preparation medium waste water, COD concentration is below 40000 mg/L behind the acid out; Acid out tank bottom clear liquid enters the Fenton retort, utilizes the Fenton oxidation style to remove part COD and improves the biochemical of waste water, and the COD clearance is 50% ~ 60%, and effluent COD concentration is down to below 20000 mg/L;
Subsequently, the water outlet of Fenton retort, workshop washing water and oil-containing road runoff rainwater are all sent into intermediate pool, add NaOH accent pH to 8 in intermediate pool, can produce a large amount of ironic hydroxide floss in the pond this moment, and intermediate pool COD concentration is at 2000-2500 mg/L.
The sewage mixed solution of three kinds of different sourcess of intermediate pool enters air flotation pool, under the micro-bubble carrier of air flotation pool high dispersing, utilize the adhesive attraction of ironic hydroxide floss and elaioleucite that suspended substance and little elaioleucite are separated from waste water, intermediate pool sewage is behind air flotation pool, the COD clearance is 10% ~ 20%, and effluent COD concentration is at 1700-1800 mg/L.
Air flotation pool water outlet and sanitary sewage enter the comprehensive adjustment pond, to different sources sewage carry out that the water yield is regulated and the water quality homogenize, the Main Function of sanitary sewage is for providing the nutritive substance such as nitrogen phosphorus, comprehensive adjustment pond COD concentration is at 1100-1300 mg/L.
The sewage of comprehensive adjustment pond output enters the anaerobic baffle plate pond through Impulsive tank with pulse mode, carries out intermittent aeration in the anaerobic baffle plate pond, and purpose one is to prevent SO
4 2-Significantly to H
2S transforms, and purpose two is part H that stripping produces
2S is to alleviate H
2S is to producing the restraining effect of acid and methanogen.Enter Aerobic Pond behind the anaerobic baffle plate tank waterpower residence time 4 d, hydraulic detention time 3 d at Aerobic Pond, realize the degraded of most organic, enter again settling tank, effluent COD concentration is at 350-450 mg/L after the settling tank gravity separation, reach " sewage enters the town sewer water quality standard " (CJ3082-2010) the B grade standard enter municipal sewage system.
A settling tank precipitating sludge part is back to Aerobic Pond, another part mud and the mud of discharging from air flotation pool and anaerobic baffle plate pond all enter sludge thickener and concentrate, mud after concentrated is transported outward after the plate-and-frame filter press press filtration, and filtrate enters intermediate pool and processes.
Claims (3)
1. the integrated conduct method of a preparation medium production plant area sewage, its feature may further comprise the steps:
(1) preparation medium waste water enters the acid out tank, add sulfuric acid and heat to 55 ~ 65 ℃ and carry out breakdown of emulsion pre-treatment 2 ~ 4 h, the volume ratio of sulfuric acid and preparation medium waste water is 0.4% ~ 1.0%, most mineral oil are separated from waste water, acid out tank top mineral oil enters the recovery of oil pond, acid out tank bottom clear liquid enters the Fenton's reaction tank under action of gravity, liquid pH to 3.0 ~ 3.5 in the regulating tank, and to wherein adding mass concentration 30% hydrogen peroxide and ferrous sulfate, the mol ratio of hydrogen peroxide and ferrous sulfate is 8 ~ 10, and the reaction times is 2 ~ 4 h;
(2) water outlet of Fenton's reaction tank, workshop washing water and oil-containing road runoff rainwater are all sent into intermediate pool, in intermediate pool, add NaOH adjusting pH to 8～8.5, in intermediate pool, generate the ironic hydroxide floss;
(3) the sewage mixed solution of intermediate pool enters air flotation pool, utilizes the adhesive attraction of ironic hydroxide floss and elaioleucite that suspended substance and little elaioleucite are separated from sewage under the micro-bubble carrier that air flotation pool disperses;
(4) air flotation pool water outlet and sanitary sewage enter the comprehensive adjustment pond, and the water yield of carrying out of different sources sewage is regulated and the water quality homogenize;
(5) sewage of comprehensive adjustment pond output enters the anaerobic baffle plate pond through Impulsive tank with pulse mode, carry out intermittent aeration in the anaerobic baffle plate pond, enter Aerobic Pond behind hydraulic detention time 3 ~ 4 d, hydraulic detention time 2 ~ 3 d at Aerobic Pond, the degraded most organic, enter again settling tank, after the settling tank gravity separation, reach emission standard water quality and enter municipal sewage system; Settling tank part precipitating sludge is back to Aerobic Pond, another part mud and the mud of discharging from air flotation pool and anaerobic baffle plate pond all enter sludge thickener and concentrate, mud after concentrated is transported outward after the plate-and-frame filter press press filtration, and filtrate enters intermediate pool and processes.
2. the integrated conduct method of preparation medium production according to claim 1 plant area sewage, it is characterized in that: the acid out tank described in the step (1), built-in oil level inductive probe, temp probe, heating coil and stirrer, acid out tank outsourcing lagging material, and installation PLC control device, tank body side bottommost arranges lower clear liquid water outlet, every 0.1m the electromagnetic valve water outlet is set from top to bottom; The PLC control device is realized the water outlet of clear liquid under mineral oil and the acid out by the switch of oil level inductive probe feedback signal control electromagnetic valve.
3. the integrated conduct method of preparation medium production according to claim 1 plant area sewage is characterized in that: be equipped with the bamboo filler in described anaerobic baffle plate pond and the Aerobic Pond.
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103159384A (en) * | 2013-04-15 | 2013-06-19 | 安徽绿创环境工程有限公司 | Method for processing food industry wastewater with small sludge emission |
| CN103359889A (en) * | 2013-08-02 | 2013-10-23 | 江苏和顺环保股份有限公司 | Sewage treatment device |
| CN103395932A (en) * | 2013-08-02 | 2013-11-20 | 江苏和顺环保股份有限公司 | Processing apparatus for waste emulsified liquid and machining wastewater |
| CN103395931A (en) * | 2013-08-02 | 2013-11-20 | 江苏和顺环保股份有限公司 | Processing technology for waste emulsified liquid and machining wastewater |
| CN103466877A (en) * | 2013-08-22 | 2013-12-25 | 桐昆集团浙江恒通化纤有限公司 | Full-biochemical treatment process of chemical fiber high-concentration spin finish effluent |
| CN103755097A (en) * | 2014-01-17 | 2014-04-30 | 上海交通大学 | Advanced oxidation-biological treatment device for non-biodegradable waste water |
| CN103755096A (en) * | 2014-01-17 | 2014-04-30 | 上海交通大学 | Coupled Fenton oxidation and anaerobic digestion reactor for treating surplus sludge |
| CN104250056A (en) * | 2013-06-28 | 2014-12-31 | 中国石油化工股份有限公司 | Processing method of tertiary oil recovery surfactant production sewage |
| CN104529090A (en) * | 2015-01-06 | 2015-04-22 | 常州大学 | Paper-making waste water deep processing system |
| CN104529085A (en) * | 2014-12-31 | 2015-04-22 | 广州立白企业集团有限公司 | Fat and oil hydrolysis waste water treatment method |
| CN105000708A (en) * | 2015-07-01 | 2015-10-28 | 上海幽岫环保科技有限公司 | Waste emulsion quantitative reduction processing technology and apparatus |
| CN105130042A (en) * | 2015-06-25 | 2015-12-09 | 巨化集团技术中心 | Pretreatment method for wastewater containing alkylphenol polyoxyethylene |
| CN105417884A (en) * | 2015-12-23 | 2016-03-23 | 山西翔宇化工有限公司 | Method and device of 4010NA waste water treatment |
| CN105819617A (en) * | 2016-03-28 | 2016-08-03 | 煤科集团杭州环保研究院有限公司 | Biological thickening treatment method and biological thickening device for high-salt organic chemical waste water |
| CN108298688A (en) * | 2018-04-12 | 2018-07-20 | 北京昊业同宇科技有限公司 | The processing unit and method of high-concentration sewage |
| CN114031217A (en) * | 2021-11-24 | 2022-02-11 | 中复神鹰碳纤维股份有限公司 | Method for rapidly treating waste oil agent for carbon fiber spinning |
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| CN103159384A (en) * | 2013-04-15 | 2013-06-19 | 安徽绿创环境工程有限公司 | Method for processing food industry wastewater with small sludge emission |
| CN104250056A (en) * | 2013-06-28 | 2014-12-31 | 中国石油化工股份有限公司 | Processing method of tertiary oil recovery surfactant production sewage |
| CN104250056B (en) * | 2013-06-28 | 2016-09-21 | 中国石油化工股份有限公司 | A kind of processing method of tertiary oil recovery surfactant production waste |
| CN103359889A (en) * | 2013-08-02 | 2013-10-23 | 江苏和顺环保股份有限公司 | Sewage treatment device |
| CN103395932A (en) * | 2013-08-02 | 2013-11-20 | 江苏和顺环保股份有限公司 | Processing apparatus for waste emulsified liquid and machining wastewater |
| CN103395931A (en) * | 2013-08-02 | 2013-11-20 | 江苏和顺环保股份有限公司 | Processing technology for waste emulsified liquid and machining wastewater |
| CN103466877B (en) * | 2013-08-22 | 2015-05-27 | 桐昆集团浙江恒通化纤有限公司 | Full-biochemical treatment process of chemical fiber high-concentration spin finish effluent |
| CN103466877A (en) * | 2013-08-22 | 2013-12-25 | 桐昆集团浙江恒通化纤有限公司 | Full-biochemical treatment process of chemical fiber high-concentration spin finish effluent |
| CN103755097A (en) * | 2014-01-17 | 2014-04-30 | 上海交通大学 | Advanced oxidation-biological treatment device for non-biodegradable waste water |
| CN103755096A (en) * | 2014-01-17 | 2014-04-30 | 上海交通大学 | Coupled Fenton oxidation and anaerobic digestion reactor for treating surplus sludge |
| CN103755096B (en) * | 2014-01-17 | 2015-03-04 | 上海交通大学 | Coupled Fenton oxidation and anaerobic digestion reactor for treating surplus sludge |
| CN103755097B (en) * | 2014-01-17 | 2015-05-20 | 上海交通大学 | Advanced oxidation-biological treatment device for non-biodegradable waste water |
| CN104529085A (en) * | 2014-12-31 | 2015-04-22 | 广州立白企业集团有限公司 | Fat and oil hydrolysis waste water treatment method |
| CN104529090B (en) * | 2015-01-06 | 2016-08-17 | 常州大学 | A kind of deep treatment system of papermaking wastewater |
| CN104529090A (en) * | 2015-01-06 | 2015-04-22 | 常州大学 | Paper-making waste water deep processing system |
| CN105130042A (en) * | 2015-06-25 | 2015-12-09 | 巨化集团技术中心 | Pretreatment method for wastewater containing alkylphenol polyoxyethylene |
| CN105000708A (en) * | 2015-07-01 | 2015-10-28 | 上海幽岫环保科技有限公司 | Waste emulsion quantitative reduction processing technology and apparatus |
| CN105417884A (en) * | 2015-12-23 | 2016-03-23 | 山西翔宇化工有限公司 | Method and device of 4010NA waste water treatment |
| CN105819617A (en) * | 2016-03-28 | 2016-08-03 | 煤科集团杭州环保研究院有限公司 | Biological thickening treatment method and biological thickening device for high-salt organic chemical waste water |
| CN108298688A (en) * | 2018-04-12 | 2018-07-20 | 北京昊业同宇科技有限公司 | The processing unit and method of high-concentration sewage |
| CN114031217A (en) * | 2021-11-24 | 2022-02-11 | 中复神鹰碳纤维股份有限公司 | Method for rapidly treating waste oil agent for carbon fiber spinning |
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