CN203159385U - Treatment and reuse system for polymerization centrifugation mother liquor - Google Patents

Treatment and reuse system for polymerization centrifugation mother liquor Download PDF

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Publication number
CN203159385U
CN203159385U CN 201320019977 CN201320019977U CN203159385U CN 203159385 U CN203159385 U CN 203159385U CN 201320019977 CN201320019977 CN 201320019977 CN 201320019977 U CN201320019977 U CN 201320019977U CN 203159385 U CN203159385 U CN 203159385U
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China
Prior art keywords
polymerization
mother liquor
cooling tower
pool
biochemical
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Expired - Lifetime
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CN 201320019977
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Chinese (zh)
Inventor
张刚
崔兆杰
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XINFA GROUP CO Ltd
Shandong University
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XINFA GROUP CO Ltd
Shandong University
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Abstract

The utility model belongs to the field of polyvinyl chloride production, and relates to a treatment and reuse system for polymerization centrifugation mother liquor. The treatment and reuse system for the polymerization centrifugation mother liquor comprises a biochemical system, a sedimentation pool, a sand filter, an ozone reactor, an active carbon filter and a final drainage pool which are sequentially connected via a water tube, wherein the biochemical system comprises an anaerobic biochemical pool and an aerobiotic biochemical pool which are sequentially connected, and a cooling tower is further connected in front of the anaerobic biochemical pool; and a fibre filter is connected between a position in front of the anaerobic biochemical pool and the cooling tower, and a PAC (polyaluminum chloride) addition device and a PAM (polyacrylamide) addition device are sequentially connected between the cooling tower and the fibre filter. The treatment and reuse system for the polymerization centrifugation mother liquor, disclosed by the utility model, has the beneficial effect that the troubling problem of full recycling for wall-coating wastewater in the same industry is really solved for the first time by adopting the main flow of a process including bio-contact oxidation, sand filtering, ozone and active carbon filtering, thus smoothly solving the obstacle that the COD (chemical oxygen demand) in the polymerization centrifugation mother liquor is hard to remove, finally controlling the COD value of produced water after the treatment to be less than 10mg/L, and meeting recycling requirements.

Description

The polymerization centrifuge mother liquor is handled and reclaiming system
Technical field
The utility model belongs to the Production of PVC field, relates to a kind of polymerization centrifuge mother liquor and handles and reclaiming system.
Background technology
In the Production of PVC process, can produce a large amount of polymerization centrifuge mother liquors, these mother liquor waste waters have very high COD value (chemical oxygen demand (COD), the water pollutant index), do not reach reuse water standard and emission standard, therefore need handle, to reduce COD concentration and to satisfy the reuse requirement.
Summary of the invention
The utility model provides a kind of good waste water treatment effect, polymerization centrifuge mother liquor easy to use to handle and reclaiming system in order to remedy the deficiencies in the prior art.
The utility model is achieved by the following technical solution:
Polymerization centrifuge mother liquor of the present utility model is handled and reclaiming system, and its special character is: comprise the biochemical system, settling tank, sand filtration strainer, ozone reactor, activated charcoal filter and the final outflow water pond that connect successively by water pipe.
Preferred version is, biochemical system comprises anaerobic biological pond and the aerobic biochemistry pool that connects successively, the anaerobic biological pond all is connected urea adding apparatus and diammonium phosphate adding apparatus with aerobic biochemistry pool, also connects cooling tower before the anaerobic biological pond, and the aerobic biochemical pond also connects roots blower.Be connected fabric filter before the anaerobic biological pond with between the cooling tower, be connected PAC adding apparatus and PAM adding apparatus successively between cooling tower and the fabric filter.Ozone reactor connects ozonizer.Also be connected with the adjusting Buffer Pool between cooling tower and the fabric filter, regulate Buffer Pool and be positioned at PAC adding apparatus front.Outlet sump in the middle of being connected with between settling tank and the sand filtration strainer.Be provided with the ozone reaction Buffer Pool between ozone reactor and the activated charcoal filter.
The beneficial effects of the utility model are, adopt bio-contact oxidation+sand filtration+ozone+activated carbon filtration technology main flow, and be aided with special physical chemistry method in different steps, utilize auxiliary physico-chemical process to remove milkiness shape material in the polymeric mother liquid in the biochemical treatment section, follow-up biological decomposition polyatomic phenol efficient is significantly improved.This technology has solved the obstacle that COD is difficult to remove in the polymerization centrifuge mother liquor smoothly, at first utilize biological contact technique to remove most COD in the centrifuge mother liquor, the part that contact can't be handled for biology then adopts ozone technology further to degrade, finally make water outlet COD value control after the processing below 10mg/L, reach the reuse requirement.This system's operation is mature and stable, and level is in a leading position at present domestic polyvinyl chloride industry.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Among the figure, 1 cooling tower, 2 is regulated Buffer Pool, 3 fabric filters, 4 anaerobic biological ponds, 5 aerobic biochemical ponds, 6 settling tanks, 7 middle outlet sumies, 8 sand filtration strainers, 9 ozone reactors, 10 ozone reaction Buffer Pools, 11 activated charcoal filters, 12 final outflow water ponds, 13 PAC adding apparatus, 14 PAM adding apparatus, 15 urea adding apparatus, 16 diammonium phosphate adding apparatus, 17 roots blowers.
Embodiment
Accompanying drawing is a kind of specific embodiment of the present utility model.
Polymerization centrifuge mother liquor of the present utility model is handled and reclaiming system, comprises the biochemical system, settling tank 6, sand filtration strainer 8, ozone reactor 9, activated charcoal filter 11 and the final outflow water pond 12 that connect successively by water pipe.Biochemical system comprises anaerobic biological pond 4 and the aerobic biochemistry pool 5 that connects successively, the anaerobic biological pond all is connected urea adding apparatus 15 and diammonium phosphate adding apparatus 16(interpolation urea and diammonium phosphate as the nutritive substance of anerobe and aerobic bacteria with aerobic biochemistry pool), also connect cooling tower 1 before the anaerobic biological pond, the aerobic biochemical pond also connects roots blower 17.Be connected fabric filter 3 before the anaerobic biological pond with between the cooling tower, be connected PAC adding apparatus 13 and PAM adding apparatus 14 successively between cooling tower and the fabric filter.Ozone reactor connects ozonizer.Also be connected with between cooling tower and the fabric filter and regulate Buffer Pool 2, regulate Buffer Pool and be positioned at PAC adding apparatus front.Outlet sump 7 in the middle of being connected with between settling tank and the sand filtration strainer.Be provided with ozone reaction Buffer Pool 10 between ozone reactor and the activated charcoal filter.PAC is polymerize aluminum chloride, and high-molecular coagulant adopting, PAM are polyacrylamide, and flocculation agent gets up to become macrobead with the tiny flco polymerization in the troubled liquor, is convenient to filter.
In this polymerization centrifuge mother liquor processing and the reclaiming system, cooling tower 1, adjusting Buffer Pool 2, fabric filter 3, anaerobic biological pond 4, aerobic biochemical pond 5, settling tank 6, middle outlet sump 7, sand filtration strainer 8, ozone reactor 9, activated charcoal filter 11 are connected successively with final outflow water pond 12.
Polymerization centrifugal mother liquor treatment reclaiming technology adopts bio-contact oxidation+sand filtration+ozone+activated carbon filtration technology main flow, and be aided with special physical chemistry method in different steps, utilize auxiliary physico-chemical process to remove milkiness shape material in the polymeric mother liquid in the biochemical treatment section, follow-up biological decomposition polyatomic phenol efficient is significantly improved.This technology has solved the obstacle that COD is difficult to remove in the polymerization centrifuge mother liquor smoothly, at first utilize the biologically removing technology to remove most COD in the centrifuge mother liquor, the part that contact can't be handled for biology then adopts ozone technology further to degrade, finally make water outlet COD value control after the processing below 10mg/L, reach the reuse requirement.This system's operation is mature and stable, and level is in a leading position at present domestic polyvinyl chloride industry.
When producing vinylchlorid, be provided with 4 cover bio-contact oxidation systems, the first phase mother liquor water of deviating from from drying centrifuge enters biochemical system (being anaerobic biological pond and aerobic biochemistry pool) after the cooling tower cooling, the second phase mother liquor enters biochemical system (being anaerobic biological pond and aerobic biochemistry pool) again after fabric filter is removed part PVA colloid (polyvinyl alcohol) after the cooling tower cooling, stripping waste water and wash-down water must be through entering biochemical system (being anaerobic biological pond and aerobic biochemistry pool) through the sieve that shakes after the ozone pre-treatment again because containing the agent of Tu wall; Above organic waste water stopped about 30 hours in the bio-contact oxidation system, during need nutrient to keep biological life metabolism.COD drops to below the 30mg/L finally by the inclined-plate clarifying basin post precipitation, and water outlet is delivered to advanced treatment system through sand-bed filter after the biochemical treatment.
In the system backwash water of each strainer all through concentrating and press filtration after, get back to system front end again and enter system and handle again, accomplish that organic waste water does not discharge.
The regular ejector priming of the mud of settling tank is sent to concentration basin and handles.
Advanced treatment system comprises ozone oxidation and two important stages of charcoal absorption.Ozonizer is that unstripped gas is produced ozone with the oxygen of purity 93%, enter afterwards in the ozone reactor 9 that contains waste water, rest COD is continued decomposing oxidation, enter ozone reaction Buffer Pool 10 then, delivered to by lift pump then and carry out residual organic substances and impurity absorption in the activated charcoal filter 11, this moment, COD was reduced to below the 10mg/L, was stored in to do water usefulness in the clean water basin (being final outflow water pond 12) one time.
In this polymerization centrifuge mother liquor processing and the reclaiming system, main units and power-equipment are:
(1) cooling tower: 2 covers, adopt 200m 3/ h cooling power counter-flow cooling tower;
(2) fabric filter: 5 covers, adopt high efficiency filter;
(3) precipitation absorption+anaerobic biological treating pond: 2 covers;
(4) aerobic bio-contact oxidation pond: 5 covers, be provided with roots blower, when mother liquor stops 14-15 hour, build 1 of a cover concentration basin in addition;
(5) sand-bed filter: 2;
(6) ozone sterilization: 2 covers, ozonizer+ozone reactor;
(7) carbon filter: 6, charcoal filter;
(8) retaining Buffer Pool: 2, regulate Buffer Pool+ozone reaction Buffer Pool;
(9) backwash water collecting tank: 1;
(10) sludge treating system: concentration basin+pressure filter;
(11) DCS Controlling System: major control equipment backwash process, operating parameters such as the flow of Monitoring systems, liquid level, dissolved oxygen.

Claims (7)

1. a polymerization centrifuge mother liquor is handled and reclaiming system, it is characterized in that: comprise the biochemical system, settling tank, sand filtration strainer, ozone reactor, activated charcoal filter and the final outflow water pond that connect successively by water pipe.
2. polymerization centrifuge mother liquor according to claim 1 is handled and reclaiming system, it is characterized in that: biochemical system comprises anaerobic biological pond and the aerobic biochemistry pool that connects successively, the anaerobic biological pond all is connected urea adding apparatus and diammonium phosphate adding apparatus with aerobic biochemistry pool, also connect cooling tower before the anaerobic biological pond, the aerobic biochemical pond also connects roots blower.
3. polymerization centrifuge mother liquor according to claim 2 is handled and reclaiming system, it is characterized in that: be connected fabric filter before the anaerobic biological pond with between the cooling tower, be connected PAC adding apparatus and PAM adding apparatus successively between cooling tower and the fabric filter.
4. handle and reclaiming system according to claim 1,2 or 3 described polymerization centrifuge mother liquors, it is characterized in that: ozone reactor connects ozonizer.
5. polymerization centrifuge mother liquor according to claim 3 is handled and reclaiming system, it is characterized in that: also be connected with the adjusting Buffer Pool between cooling tower and the fabric filter, regulate Buffer Pool and be positioned at PAC adding apparatus front.
6. handle and reclaiming system according to claim 1,2 or 3 described polymerization centrifuge mother liquors, it is characterized in that: outlet sump in the middle of being connected with between settling tank and the sand filtration strainer.
7. handle and reclaiming system according to claim 1,2 or 3 described polymerization centrifuge mother liquors, it is characterized in that: be provided with the ozone reaction Buffer Pool between ozone reactor and the activated charcoal filter.
CN 201320019977 2013-01-15 2013-01-15 Treatment and reuse system for polymerization centrifugation mother liquor Expired - Lifetime CN203159385U (en)

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Application Number Priority Date Filing Date Title
CN 201320019977 CN203159385U (en) 2013-01-15 2013-01-15 Treatment and reuse system for polymerization centrifugation mother liquor

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Application Number Priority Date Filing Date Title
CN 201320019977 CN203159385U (en) 2013-01-15 2013-01-15 Treatment and reuse system for polymerization centrifugation mother liquor

Publications (1)

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CN203159385U true CN203159385U (en) 2013-08-28

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106830547A (en) * 2017-03-03 2017-06-13 北京中科众联新能源技术服务有限公司 A kind of suspension type polyvinyl-chloride polymerization workshop section method of wastewater treatment and device
CN111392913A (en) * 2020-04-24 2020-07-10 莱特莱德(北京)环境技术股份有限公司 System and method for advanced treatment of PVC centrifugal mother liquor waste liquid

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106830547A (en) * 2017-03-03 2017-06-13 北京中科众联新能源技术服务有限公司 A kind of suspension type polyvinyl-chloride polymerization workshop section method of wastewater treatment and device
CN106830547B (en) * 2017-03-03 2018-01-09 北京中科众联新能源技术服务有限公司 A kind of suspension type polyvinyl-chloride polymerization workshop section method of wastewater treatment and device
CN108002654A (en) * 2017-03-03 2018-05-08 北京中科众联新能源技术服务有限公司 A kind of suspension type polyvinyl-chloride polymerization workshop section wastewater treatment method
CN108002654B (en) * 2017-03-03 2020-11-13 北京中科众联新能源技术服务有限公司 Suspension method polyvinyl chloride polymerization section wastewater treatment method
CN111392913A (en) * 2020-04-24 2020-07-10 莱特莱德(北京)环境技术股份有限公司 System and method for advanced treatment of PVC centrifugal mother liquor waste liquid

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Granted publication date: 20130828

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