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Centrifugal mother liquor water recycling system and method thereof

A technology for centrifuging mother liquor and water reuse, applied in chemical instruments and methods, multi-stage water treatment, water/sewage treatment, etc., can solve problems such as threats to wastewater treatment systems, waste of water resources, hidden safety hazards, etc., and achieve the solution of enterprise resources Effects of shortage, pollution elimination, and heat recovery

Inactive Publication Date: 2020-05-26
HWASU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The content of suspended solids (SS) and VCM in the centrifuge mother liquor is relatively high. If it is discharged directly, it will not only waste water resources, but also cause serious pollution to the environment; moreover, due to the overflow of a large amount of VCM, it will form a potential safety hazard in the drainage. System poses a serious threat

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A centrifugal mother liquor water recycling system, the system includes a mother liquor recovery tank, a mother liquor centrifugal settling tank, a slurry filter, a circulating cooler, an organic photocatalytic oxidation tank, a secondary settling tank, and a recycling tank; the mother liquor recovery tank is connected to the mother liquor Centrifugal settling tank, the supernatant of the mother liquid centrifugal settling tank is connected to the slurry filter; the filtrate outlet of the slurry filter is equipped with a circulating cooler; the filtrate outlet is connected to the organic photocatalytic oxidation tank, and the organic photocatalytic oxidation tank is connected to the second stage Settling tank, the supernatant outlet of the secondary settling tank is connected to the recycling tank.

[0023] The mother liquor recovery tank is connected to the PVC polymerization kettle through the slurry centrifugal system; the slurry centrifugal system includes a slurry d...

Embodiment 2

[0028] A treatment method of a centrifuge mother liquor water recycling system, said method comprising the steps of:

[0029] 1. The mother liquor in the slurry enters the mother liquor recovery tank from the PVC polymerization kettle;

[0030] 2. The mother liquor enters the mother liquor centrifugal settling tank for sedimentation, and the settled supernatant enters the slurry filter for filtration; the sediment is collected and discharged;

[0031] 3. The supernatant is filtered in the slurry filter, and the filtered filtrate is cooled below room temperature through a circulating cooler;

[0032] 4. The cooled filtrate in the third step enters the organic photocatalytic oxidation tank for catalytic oxidation treatment to treat organic matter; the catalyzed filtrate enters the secondary settling tank;

[0033] 5. After the secondary settling treatment, the supernatant in the secondary settling tank is returned to the recycling tank; reused.

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PUM

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Abstract

The invention discloses a centrifugal mother liquor water recycling system. The system comprises a mother liquor recycling tank, a mother liquor centrifugal settling tank, a slurry filter, a circulating cooler, an organic photocatalytic oxidation tank, a secondary settling tank and a recycling tank, wherein the mother liquor recycling tank is communicated and connected with the mother liquor centrifugal settling tank, and an supernatant of the mother liquor centrifugal settling tank is connected with the slurry filter; the circulating cooler is arranged at a filtrate outlet of the slurry filter; the filtrate outlet is connected with the organic photocatalytic oxidation tank which is connected with the secondary settling tank; and a supernatant outlet of the secondary settling tank is connected with the recycling tank. The invention discloses a centrifugal mother liquor water recycling system which effectively recycles centrifugal mother liquor, solves the problem of shortage of enterprise resources, and can recycle heat energy, eliminate pollution and increase economic benefits.

Description

technical field [0001] The invention relates to the field of waste water treatment, in particular to a centrifuge mother liquor water reuse system. Background technique [0002] At present, the production methods of polyvinyl chloride (PVC) in my country mainly include ethylene oxychlorination method and calcium carbide acetylene method. Due to our country's unique coal and limestone resources, it provides a guarantee for the supply of calcium carbide raw materials; in addition, after the development and improvement of calcium carbide acetylene process PVC in recent years, the process technology is mature, which provides technical support for the development of calcium carbide acetylene process PVC resin. support. But for a long time, a large amount of calcium carbide slag and waste water produced by calcium carbide acetylene process PVC have been used to produce cement, and most of the waste water has not been utilized. With the continuous improvement of the suspension me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04
CPCC02F1/001C02F1/52C02F1/725C02F9/00C02F2301/08
Inventor 宋开生徐明陈雷
Owner HWASU