CN103145269A - Purification treatment method for oily grinding wastewater in bearing production - Google Patents
Purification treatment method for oily grinding wastewater in bearing production Download PDFInfo
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- CN103145269A CN103145269A CN2013100955291A CN201310095529A CN103145269A CN 103145269 A CN103145269 A CN 103145269A CN 2013100955291 A CN2013100955291 A CN 2013100955291A CN 201310095529 A CN201310095529 A CN 201310095529A CN 103145269 A CN103145269 A CN 103145269A
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Abstract
The invention discloses a purification treatment method for oily grinding wastewater in bearing production. The purification treatment method is characterized by comprising the following steps of: performing homogenization and amount equalization on the wastewater in an adjusting pool; feeding the wastewater into a gravity type inclined plate oil isolating pool for removing the floating oil; after passing through the inclined plate oil isolating pool, entering a three-joint reaction tank; decreasing the pH value of the wastewater to be at 3-4 by using 10% H2SO so as to realize acidification demulsification; further adding three agents, namely, 5-10% lime emulsion, 10% PAC (Polymeric Aluminum) and 0.1% PAM (Polyacrylamide) to carry out chemical coagulation treatment; subsequently entering an inclined plate sedimentation basin for solid-liquid separation; and finally filtering by using a walnut shell filter to meet the standard and subsequently discharging into a discharging pool. The purification treatment method disclosed by the invention takes the place of the conventional treatment process of the original aeration biochemical treatment; and the contents of the CODCra dn BOD5 and the oil content in the treated water all meet the GB8978 Sewage Comprehensive Emission Three-Grade Emission Standard.
Description
Technical field
The present invention relates to a kind of method for purifying treatment of industrial effluent, particularly disclose the purifying treatment method of oil-containing abrasive waste water in a kind of Production of bearing, be applicable to machinery industry to the purifying treatment of oil-containing abrasive waste water, reach emission standard.
Background technology
Bearing is to work the parts of fixing and reducing the load frictional coefficient in mechanical transmission course, be a kind of very important component in contemporary mechanical means, be widely used in the fields such as automobile, air-conditioning, electric motor, wheelwork, injection moulding agent, lathe, mining machinery, engineering machinery, motorcycle, office equipment, papermaking equipment, pump and compressor, railway, semi-conductor, metallurgical equipment, aerogenerator.Show according to Chinese bearing industry association related data, National Bearing manufacturing enterprise is about 4000～5000, reaches reach 1750 of certain marketing scale, and what only be used for automobile accessories just has a family more than 30.
Tolerance and technical requirements in order to ensure bearing inevitably need through overground processing, lappingout or the steps such as polishing, grinding.The lapping liquid that produces is artificial silicon carbide (SiC), natural silicon carbide (Al
2O
3), quartz sand (SiO
2) and the composition such as stearic acid, oleic acid, paraffin, rust-preventive agent, thickening material, the general pollutant component of the waste water of its discharging is COD
Cr(chemical oxygen demand (COD)) 1000-1500mg/L, BOD
5(biochemical oxygen demand (BOD)) 300-500mg/L, the SS(suspended substance) 600-1000mg/L, petroleum-type (n-Hex) 80-100mg/L, the waste water water displacement is generally 100-300m
3/ d.
Oil content in draining mainly exists with the emulsion state, usually the processing means of this type of oil-containing abrasive waste water are order dischargings after oil removal, air supporting, aeration biochemical to sand filtration are processed, this treatment process often exists that breakdown of emulsion is insufficient, oil removal and oil removal treatment not good and cause the aeration biochemical treatment effect not good, because affected by tensio-active agent etc., can not normally float first-class phenomenon when some abrasive materials and suspended substance air supporting.
Summary of the invention
The objective of the invention is to solve the drawback that is subject to high oil content impact when the oil-containing abrasive waste water adopts traditional aeration biochemical, the purifying treatment method of oil-containing abrasive waste water in a kind of Production of bearing is disclosed, it is a kind of simple method that does not need aeration biochemical to process, after making the oil-containing abrasive waste water processed, COD in water not only
Cr, BOD
5Content reaches emission standard, and also oleaginousness also reaches emission standard.
The present invention is achieved in that the purifying treatment method of oil-containing abrasive waste water in a kind of Production of bearing, it is characterized in that: after the equalizing tank homogeneous is all measured, with being pumped into for the gravity type boat davit sloping plate oil separation tank of removing oil slick, enter the triple response groove after sloping plate oil separation tank, first adopt 10% H
2SO
4The pH value of waste water is down to 3～4, after realizing Production Wastewater By Combined Acidification And Demulsification, add again 5～10% lime slurries, 10%PAC polymerize aluminum chloride and three kinds of medicaments of 0.1%PAM polyacrylamide and carry out the chemical coagulation processing, then enter the inclined-plate clarifying basin for solid-liquid separation, filter by walnut shell filter at last, guarantee to discharge after in the water after processed, oleaginousness reaches emission standard 20mg/L.It is the oil slick of 10～100 μ that described gravity type boat davit sloping plate oil separation tank is removed particle diameter, and oil removal rate never 30% before breakdown of emulsion is brought up to more than 80%.The input amount of described 5～10% lime slurries, 10%PAC polymerize aluminum chloride and three kinds of medicaments of 0.1%PAM polyacrylamide is obtained by traditional coagulation beaker experimental technique, and the supernatant liquor water white transparency that produces take test is as above-mentioned three kinds of medicament quantitative basis.
Wherein gravity type boat davit sloping plate oil separation tank and inclined-plate clarifying basin are conventional art, and the present invention is not described further.Walnut shell filter is selected commercially available special-purpose nut-shell, has the characteristics such as hardness is high, wear resistance good, good hydrophilic property, oil rub resistance, and the efficient of deoiling reaches more than 85%,
Removal efficiency is also in 90% left and right, and design current velocity is 20m/h, and back washing strength is 8m3/cm2h, and general annual 10% left and right that replenishes gets final product.The present invention also is provided with the use that the vertical-type planetary cycloidal planetary gear speed reducer mixes walnut shell filtering material.Oily sludge and precipitating sludge adopt commercially available folded spiral shell formula sludge dewatering equipment to process, and water ratio is lower than 80%.The document of having delivered at present and patent are only improved from structure for the walnut shell filter that is used for disposing polluted water in oil, and the walnut shell filter that the present invention adopts is mainly on to the oily(waste)water end processing that contains oil in water emulsion, new application innovation have been arranged.
The invention has the beneficial effects as follows: the invention solves the drawback that is subject to high oil content impact when the oil-containing abrasive waste water adopts traditional aeration biochemical, replaced the conventional process means that former aeration biochemical is processed, after making the oil-containing abrasive waste water processed, COD in water
Cr, BOD
5Content and oleaginousness all reach " three grades of emission standards of GB8978 sewage comprehensive discharge ", and treatment process is simple, and oil removal rate is high.
Description of drawings
Fig. 1 is the process flow diagram of the inventive method.
Embodiment
With reference to the accompanying drawings, in Production of bearing of the present invention, the purifying treatment method technical process of oil-containing abrasive waste water is: raw wastewater is after the equalizing tank homogeneous is all measured, with being pumped into for the gravity type boat davit sloping plate oil separation tank of removing oil slick, removing particle diameter is the oil slick of 10～100 μ, and oil removal rate never 30% before breakdown of emulsion is brought up to more than 80%.Enter the triple response groove after sloping plate oil separation tank, first adopt 10% H
2SO
4The pH value of waste water is down to 3～4, after realizing Production Wastewater By Combined Acidification And Demulsification, add again 5～10% lime slurries, 10%PAC polymerize aluminum chloride and three kinds of medicaments of 0.1%PAM polyacrylamide and carry out the chemical coagulation processing, input amount is obtained by traditional coagulation beaker experimental technique, and the supernatant liquor water white transparency that produces take test is as above-mentioned three kinds of medicament quantitative basis.Then enter the inclined-plate clarifying basin for solid-liquid separation, filter by walnut shell filter at last and discharge after in the water of guaranteeing after processed, oleaginousness reaches emission standard 20mg/L.
Embodiment:
The inventive method is applied to the construction project of Japan certain bearing makers' domestic factory, its waste water day quantity discharged be 300m
3/ d presses 15m
3/ h design adopt operational path of the present invention, but by the waste discharge of table 1 discharge of wastewater water conditioning to table 2, water outlet can reach emission standard, and average removal rate is listed in table 2.
Table 1, discharge of wastewater water quality are as follows.
Water quality and clearance after table 2, processing.
Claims (3)
1. the purifying treatment method of oil-containing abrasive waste water in a Production of bearing, is characterized in that: after the equalizing tank homogeneous is all measured, with being pumped into for the gravity type boat davit sloping plate oil separation tank of removing oil slick, enter the triple response groove after sloping plate oil separation tank, first adopt 10% H
2SO
4The pH value of waste water is down to 3～4, after realizing Production Wastewater By Combined Acidification And Demulsification, add again 5～10% lime slurries, 10%PAC polymerize aluminum chloride and three kinds of medicaments of 0.1%PAM polyacrylamide and carry out the chemical coagulation processing, then enter the inclined-plate clarifying basin for solid-liquid separation, filter by walnut shell filter at last and drain into after up to standard in the discharging pond.
2. the purifying treatment method of oil-containing abrasive waste water in described Production of bearing according to claim 1, it is characterized in that: it is the oil slick of 10～100 μ that described gravity type boat davit sloping plate oil separation tank is removed particle diameter, and oil removal rate is increased to more than 80%.
3. the purifying treatment method of oil-containing abrasive waste water in described Production of bearing according to claim 1, it is characterized in that: the input amount of described 5～10% lime slurries, 10%PAC polymerize aluminum chloride and three kinds of medicaments of 0.1%PAM polyacrylamide is obtained by traditional coagulation beaker experimental technique, and the supernatant liquor water white transparency that produces take test is as above-mentioned three kinds of medicament quantitative basis.
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| CN2013100955291A CN103145269A (en) | 2013-03-25 | 2013-03-25 | Purification treatment method for oily grinding wastewater in bearing production |
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| CN2013100955291A CN103145269A (en) | 2013-03-25 | 2013-03-25 | Purification treatment method for oily grinding wastewater in bearing production |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103723853A (en) * | 2013-12-04 | 2014-04-16 | 江苏双净净化科技有限公司 | Intermittent comprehensive treating system for gas generating station and treating method of intermittent comprehensive treating system |
| CN104496059A (en) * | 2015-01-01 | 2015-04-08 | 湖南东祥油脂有限公司 | Process for treating sewage produced in edible oil plant |
| CN104710048A (en) * | 2015-03-31 | 2015-06-17 | 邓声荣 | Zero-emission process for treating waste water on metallic surface |
| CN106746112A (en) * | 2016-12-09 | 2017-05-31 | 苏州纳贝通环境科技有限公司 | A kind of processing method of oily waste water |
| CN107473450A (en) * | 2017-09-27 | 2017-12-15 | 界首市皖俊轴承有限公司 | A kind of wastewater treatment equipment and method based on Production of bearing |
| CN107698078A (en) * | 2017-11-13 | 2018-02-16 | 广州桑尼环保科技有限公司 | Pretreatment method and treatment system for explosive production wastewater |
| CN113087240A (en) * | 2021-03-31 | 2021-07-09 | 国网山东省电力公司电力科学研究院 | Treatment system for oily wastewater of direct current converter station and application method |
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| JP2008126164A (en) * | 2006-11-22 | 2008-06-05 | Daicen Membrane Systems Ltd | Treatment method of oil-containing wastewater |
| CN101376532A (en) * | 2007-08-31 | 2009-03-04 | 中国石油天然气股份有限公司 | Low-temperature oily sewage treatment method |
| CN201280498Y (en) * | 2008-09-04 | 2009-07-29 | 江苏兴邦环保工程科技有限公司 | Integrated process apparatus for oily wastewater |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103723853A (en) * | 2013-12-04 | 2014-04-16 | 江苏双净净化科技有限公司 | Intermittent comprehensive treating system for gas generating station and treating method of intermittent comprehensive treating system |
| CN103723853B (en) * | 2013-12-04 | 2015-08-26 | 江苏双净净化科技有限公司 | Gas generating station intermittent type total system and treatment process thereof |
| CN104496059A (en) * | 2015-01-01 | 2015-04-08 | 湖南东祥油脂有限公司 | Process for treating sewage produced in edible oil plant |
| CN104710048A (en) * | 2015-03-31 | 2015-06-17 | 邓声荣 | Zero-emission process for treating waste water on metallic surface |
| CN104710048B (en) * | 2015-03-31 | 2016-06-22 | 邓声荣 | A kind of technique of zero discharge for Treatment of Metal Surface waste water |
| CN106746112A (en) * | 2016-12-09 | 2017-05-31 | 苏州纳贝通环境科技有限公司 | A kind of processing method of oily waste water |
| CN106746112B (en) * | 2016-12-09 | 2020-05-05 | 创智汇晶知识产权运营(苏州)有限公司吴中经济开发区分公司 | Treatment method of oily wastewater |
| CN107473450A (en) * | 2017-09-27 | 2017-12-15 | 界首市皖俊轴承有限公司 | A kind of wastewater treatment equipment and method based on Production of bearing |
| CN107698078A (en) * | 2017-11-13 | 2018-02-16 | 广州桑尼环保科技有限公司 | Pretreatment method and treatment system for explosive production wastewater |
| CN113087240A (en) * | 2021-03-31 | 2021-07-09 | 国网山东省电力公司电力科学研究院 | Treatment system for oily wastewater of direct current converter station and application method |
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Application publication date: 20130612 |