CN103770243A - Economic and environmentally-friendly waste plastic cleaning process - Google Patents
Economic and environmentally-friendly waste plastic cleaning process Download PDFInfo
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- CN103770243A CN103770243A CN201310521205.XA CN201310521205A CN103770243A CN 103770243 A CN103770243 A CN 103770243A CN 201310521205 A CN201310521205 A CN 201310521205A CN 103770243 A CN103770243 A CN 103770243A
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- cleaning
- waste
- surfactant
- waste plastic
- alkali
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Abstract
The invention provides an economic and environmentally-friendly waste plastic cleaning process and relates to the technical field of resource recycling and environmental protection. The process comprises the following steps: 1) a surfactant is adopted to remove all non-oily dirt and more than 80 percent of oil dirt on waste plastic particles; 2) cleaning sewage containing the surfactant is precipitated, the clarified water is reused, and neutral precipitated mud is used for fertilizer processing; 3) the waste plastic particles cleaned in the first step are washed by alkaline liquor with the concentration of 20 percent and temperature of 60-80 DEG C; 4) a flocculant is added into alkaline sewage produced after secondary cleaning for precipitating, clarified water on the upper layer is reused after being added with alkali, acid is added into precipitated mud on the lower layer for neutralizing, substances on the oil layer are used for fertilizer processing, and non-oily mud is used for building filling. According to the invention, two processes of neutral surfactant washing and caustic soda strong washing are adopted to clean the waste plastic particles, so that the using amount of alkali and sewage treatment amount are reduced greatly, sewage treatment cost is reduced, all sewage is recycled and not discharged, sludge is used fully, the process is economic and environmentally-friendly, the utilization ratio of resources is increased, and the problems of environment pollution and high pollution treatment cost in the conventional process are solved.
Description
Technical field
The present invention relates to resource reutilization and environmental technology field, be specifically related to a kind of waste plastics cleaning technique of economic environmental protection.
Background technology
At present, recycling economy is paid attention to, the fast development of waste plastic regeneration industry, in its development, first to separate waste or used plastics, broken, clean, traditional cleaning method is mainly to utilize alkali lye to clean, can produce thus a large amount of alkaline waste waters, if directly discharge pollutes the environment, if environmental protection treatment in addition, with high costs, enterprise is difficult to carry out.The cleaning technique of releasing a kind of economic environmental protection is imperative.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of waste plastics cleaning technique of economic environmental protection.
Technical problem to be solved by this invention realizes by the following technical solutions:
A waste plastics cleaning technique for economic environmental protection, its processing step is as follows:
1) the waste or used plastics particle of pulverizing is put into cleaning machine one, in rinse water, add neutral surfactant, clean 10-20 minute, utilize all non-oily dirts and 80% above greasy dirt on removal of surfactant waste or used plastics particle;
2) emit cleaning sullage one, the cleaning sullage that contains surfactant is focused on to sedimentation basin adds flocculant to precipitate, after the primary water supplementary table surface-active agent of upper strata, circulating and recovering is in cleaning together, and lower floor is rich in after organic neutral glar press filtration is dried and can processes for fertilizer;
3) in Er road cleaning machine, add concentration 20%, the alkali lye of temperature 60-80 ℃, carries out thermokalite to obstinate oil stain on waste or used plastics particle and washes by force, cleans and pulls waste or used plastics particle out after 10-20 minute, and sheet stock washes down after rear dehydration drains and recycles with clear water;
4) alkaline sewage after the cleaning of Jiang Er road and flushing water are concentrated to put into and are left standstill pond, add flocculant, leave standstill more than 5 hours, circulating and recovering Yu Er road alkali cleaning after the primary water benefit alkali of upper strata, lower sediment dredge pump go out to add in spent acid and after, oil reservoir separating substances is for fertilizer processing, and non-oiliness mud is used for building embankment.
The invention has the beneficial effects as follows: the present invention adopts neutral surface active agent to wash to wash by force twice technique with caustic soda waste or used plastics bottle chips is cleaned, greatly reduce alkali charge and sewage load, reduce cost of sewage disposal, effluent cycle is utilized, do not have waste water to arrange outward, mud makes full use of, process economics environmental protection, improved the utilization rate of resource, solved traditional handicraft clean in the problems such as contaminated environment, pollution treatment be with high costs.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach object and effect is easy to understand, below in conjunction with specific embodiment, further set forth the present invention.
A waste plastics cleaning technique for economic environmental protection, its processing step is as follows:
1) the waste or used plastics particle of pulverizing is put into cleaning machine one, in rinse water, add neutral surfactant, clean 10-20 minute, utilize all non-oily dirts and 80% above greasy dirt on removal of surfactant waste or used plastics particle;
2) emit cleaning sullage one, the cleaning sullage that contains surfactant is focused on to sedimentation basin adds flocculant to precipitate, after the primary water supplementary table surface-active agent of upper strata, circulating and recovering is in cleaning together, and lower floor is rich in after organic neutral glar press filtration is dried and can processes for fertilizer;
3) in Er road cleaning machine, add the alkali lye of concentration 20% temperature 60-80 ℃, obstinate oil stain on waste or used plastics particle is carried out to thermokalite and wash by force, clean and pull waste or used plastics particle out after 10-20 minute, sheet stock washes down after rear dehydration drains and recycles with clear water;
4) alkaline sewage after the cleaning of Jiang Er road and flushing water are concentrated to put into and are left standstill pond, add flocculant, leave standstill more than 5 hours, circulating and recovering Yu Er road alkali cleaning after the primary water benefit alkali of upper strata, lower sediment dredge pump go out to add in spent acid and after, oil reservoir separating substances is for fertilizer processing, and non-oiliness mud is used for building embankment.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; that in above-described embodiment and description, describes just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.The claimed scope of the present invention is defined by appending claims and equivalent thereof.
Claims (1)
1. a waste plastics cleaning technique for economic environmental protection, relates to resource reutilization and environmental technology field, it is characterized in that: its processing step is as follows,
1) the waste or used plastics particle of pulverizing is put into cleaning machine one, in rinse water, add neutral surfactant, clean 10-20 minute, utilize all non-oily dirts and 80% above greasy dirt on removal of surfactant waste or used plastics particle;
2) emit cleaning sullage one, the cleaning sullage that contains surfactant is focused on to sedimentation basin adds flocculant to precipitate, after the primary water supplementary table surface-active agent of upper strata, circulating and recovering is in cleaning together, and lower floor is rich in after organic neutral glar press filtration is dried and can processes for fertilizer;
3) in Er road cleaning machine, add the alkali lye of concentration 20% temperature 60-80 ℃, obstinate oil stain on waste or used plastics particle is carried out to thermokalite and wash by force, clean and pull waste or used plastics particle out after 10-20 minute, sheet stock washes down after rear dehydration drains and recycles with clear water;
4) alkaline sewage after the cleaning of Jiang Er road and flushing water are concentrated to put into and are left standstill pond, add flocculant, leave standstill more than 5 hours, circulating and recovering Yu Er road alkali cleaning after the primary water benefit alkali of upper strata, lower sediment dredge pump go out to add in spent acid and after, oil reservoir separating substances is for fertilizer processing, and non-oiliness mud is used for building embankment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310521205.XA CN103770243B (en) | 2013-10-29 | 2013-10-29 | A kind of waste plastics cleaning technique |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310521205.XA CN103770243B (en) | 2013-10-29 | 2013-10-29 | A kind of waste plastics cleaning technique |
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| CN103770243A true CN103770243A (en) | 2014-05-07 |
| CN103770243B CN103770243B (en) | 2015-10-28 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105251732A (en) * | 2015-11-09 | 2016-01-20 | 奉化市旭日鸿宇有限公司 | Cleaning method of plastic particle raw materials |
| CN105269713A (en) * | 2015-11-17 | 2016-01-27 | 王仁杰 | Low-temperature crushing and separating treatment method for oil field waste plastic |
| CN106273062A (en) * | 2016-08-23 | 2017-01-04 | 天津市旭辉恒远塑料包装股份有限公司 | A kind of cleaning of waste or used plastics |
| CN107443614A (en) * | 2017-07-19 | 2017-12-08 | 成都新柯力化工科技有限公司 | A kind of method for improving the regenerated plastics transparency |
| CN111547937A (en) * | 2020-04-30 | 2020-08-18 | 南京大学 | Water-salt balancing method and system for recycling household garbage waste plastic cleaning water |
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| US5120768A (en) * | 1991-05-09 | 1992-06-09 | The Goodyear Tire & Rubber Company | Process for separating polyethylene terephthalate from polyvinyl chloride |
| JP2000189922A (en) * | 1998-12-25 | 2000-07-11 | Toufuku Kk | Treatment of waste synthetic resin material |
| US6114401A (en) * | 1994-03-21 | 2000-09-05 | Doonan; Billie Odell | Plastic reclamation process |
| CN101230152A (en) * | 2007-01-28 | 2008-07-30 | 青岛科技大学 | Method for preparing waste polyphenylacetylene micron-size spherical particles |
| CN101445303A (en) * | 2008-12-03 | 2009-06-03 | 王静丽 | Method for recycling sewage for cleaning waste plastic and device thereof |
| CN101993157A (en) * | 2010-09-10 | 2011-03-30 | 孙卫东 | Technical method for recycling sewage in regeneration process of waste plastics |
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2013
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Patent Citations (6)
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| US5120768A (en) * | 1991-05-09 | 1992-06-09 | The Goodyear Tire & Rubber Company | Process for separating polyethylene terephthalate from polyvinyl chloride |
| US6114401A (en) * | 1994-03-21 | 2000-09-05 | Doonan; Billie Odell | Plastic reclamation process |
| JP2000189922A (en) * | 1998-12-25 | 2000-07-11 | Toufuku Kk | Treatment of waste synthetic resin material |
| CN101230152A (en) * | 2007-01-28 | 2008-07-30 | 青岛科技大学 | Method for preparing waste polyphenylacetylene micron-size spherical particles |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105251732A (en) * | 2015-11-09 | 2016-01-20 | 奉化市旭日鸿宇有限公司 | Cleaning method of plastic particle raw materials |
| CN105269713A (en) * | 2015-11-17 | 2016-01-27 | 王仁杰 | Low-temperature crushing and separating treatment method for oil field waste plastic |
| CN105269713B (en) * | 2015-11-17 | 2017-11-17 | 王仁杰 | Oil field waste plastic at low temperature crushes method for separating and processing |
| CN106273062A (en) * | 2016-08-23 | 2017-01-04 | 天津市旭辉恒远塑料包装股份有限公司 | A kind of cleaning of waste or used plastics |
| CN107443614A (en) * | 2017-07-19 | 2017-12-08 | 成都新柯力化工科技有限公司 | A kind of method for improving the regenerated plastics transparency |
| CN107443614B (en) * | 2017-07-19 | 2019-06-28 | 上海展通实业有限公司 | A method of improving the regenerated plastics transparency |
| CN111547937A (en) * | 2020-04-30 | 2020-08-18 | 南京大学 | Water-salt balancing method and system for recycling household garbage waste plastic cleaning water |
Also Published As
| Publication number | Publication date |
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| CN103770243B (en) | 2015-10-28 |
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