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Comprehensive treatment process and treatment device of calcium-containing suspended solids and chlorine and salt-containing waste liquid

A technology for solid suspended solids and saline waste liquid, which is applied in the directions of multi-stage water treatment, water/sewage treatment, multi-stage water/sewage treatment, etc. It can solve the problems of restricting chemical production and environmental protection capacity expansion, and large waste liquid discharge. problem, achieve the effect of reducing or lowering the pollution factor, reducing the failure rate, and overcoming the poor mixing effect

Active Publication Date: 2015-01-14
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The daily discharge of waste liquid from existing chemical production equipment is huge. In addition to other water and domestic water, a large amount of sewage is discharged every day. The discharge of waste liquid has become a bottleneck restricting chemical production, environmental protection and future capacity expansion.

Method used

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  • Comprehensive treatment process and treatment device of calcium-containing suspended solids and chlorine and salt-containing waste liquid

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Embodiment Construction

[0022] Such as figure 1 Shown: comprehensive treatment device for calcium-containing solid suspended matter, chlorine-containing, and salt-containing waste liquid, including waste liquid collection tank, waste liquid feeding pump, settler, thick liquid tank, thick liquid pump, clear liquid tank, clear liquid pump , a tubular mixer, a gas-liquid separator, a heat exchange device, a chlorination reaction fine-tuning tank, a chlorine absorption device, a hydrochloric acid tank and an acid pump, and the waste liquid collection tank 1 and the pump inlet of the waste liquid feeding pump 2 pass through The pipeline is connected, and the pump outlet of the waste liquid feeding pump is connected with the inlet of the settler 3 through a pipeline. The lower part of the settler is provided with a thick liquid outlet, and the upper part is provided with a waste liquid clear liquid outlet. The thick liquid outlet Connected with the thick liquid tank 4, the thick liquid tank is connected wi...

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Abstract

The invention relates to comprehensive treatment process and treatment device of calcium-containing suspended solids and a chlorine and salt-containing waste liquid. The process comprises the following steps: settling the waste liquid from a production device for solid-liquid separation; feeding a clean liquid of the waste liquid which still contains a part of calcium-containing suspended solids to a tubular mixer; meanwhile, feeding hydrochloric acid into the tubular mixer; after the clean liquid of the waste liquid and the hydrochloric acid are reacted in the tubular mixer, absorbing chlorine generated by reaction of ClO<-> and hydrochloric acid in the clean liquid of the waste liquid by using alkali liquor after separation by using a gas-liquid separator to generate sodium hypochlorite; after heat exchange and cooling, feeding the rest liquid phase mixed liquid to a chlorination fine adjusting tank; meanwhile, feeding the hydrochloric acid into the chlorination fine adjusting tank for further full reaction; and after heat exchange and cooling and dechlorination of the reacted system, refilling underground to collect halogens for producing low-nitryl brine. The process provided by the invention not only can be used for realizing zero emission of calcium, chlorine and salt-containing waste liquid, but also can be used for recovering effective components, treating waste by waste and reducing or lowering pollution factors.

Description

technical field [0001] The invention belongs to the field of waste water treatment, and in particular relates to a comprehensive treatment process and a treatment device for calcium-containing solid suspended matter, chlorine-containing and salt-containing waste liquid. Background technique [0002] The daily discharge of waste liquid from existing chemical production equipment is huge. In addition to other water and domestic water, a large amount of sewage discharge is generated every day. The discharge of waste liquid has become a bottleneck restricting chemical production, environmental protection and future capacity expansion. The waste liquid is reused after reasonable treatment to realize the advanced treatment and comprehensive utilization of the waste liquid, which can fundamentally solve the problem of waste liquid discharge. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a comprehensive treatment proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/04
CPCB01D53/68B01D53/78C01B11/062C02F1/52C02F1/58C02F9/00C02F2101/101C02F2101/12C02F2301/08
Inventor 叶学良李俊胡墨涛吴威武
Owner CHINA PETROLEUM & CHEM CORP
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