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Processing method for industrial park salt-containing wastewater

A technology for salty wastewater and concentrated water, which is applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, general water supply saving, etc. To achieve the effect of short construction period, lower investment and investment saving

Inactive Publication Date: 2014-08-13
郭强
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] Disadvantages: large investment, large land occupation, high operating costs, and large negative impact on the environment;
[0007] Disadvantages: Compared with traditional technology, it saves investment, but is still larger, occupies less land but is still larger, and has higher operating costs. The negative impact on the environment is slightly reduced, but there is no essential difference

Method used

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  • Processing method for industrial park salt-containing wastewater

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] The following takes the industrial park saline wastewater treatment project as an example to introduce.

[0038] The method for treating saline wastewater in the park includes the following steps:

[0039] (1) The saline waste water enters the adjustment tank through the pipeline for simple adjustment and then enters the softening sedimentation tank. First, add lime water to the softening sedimentation tank for 10 minutes, settle for 30 minutes, add sodium carbonate, react for 10 minutes, settle for 30 minutes, and then Add acid to adjust the pH to below 6.5, and the supernatant flows into the multi-media filter;

[0040] (2) The liquid flow initially filtered by the multi-media filter enters the ultrafiltration device through the high-pressure pump, and the liquid flow filtered by the ultrafiltration membrane device enters the first section of the roll-type reverse osmosis system through the high-pressure pump;

[0041] (3) Concentrated water from the first coil type ...

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Abstract

The invention discloses a processing method for salt-containing wastewater. Wastewater is processed successively by a regulating tank, a softening sedimentation tank, a multimedium filter, an ultrafiltration apparatus, a first-segment roll-type reverse osmosis system, a second-segment roll-type reverse osmosis system, an ion exchange apparatus, a roll-type nanofiltration membrane apparatus, a high-pressure reverse osmosis membrane system and an efficient evaporator. According to the method, the anti-pollution capability is strong, the obstruction problem is solved, the concentration multiple is high, the reusable efficiency is high, the processing efficiency is high, the automation degree is high, the investment is saved, and the operation cost is low.

Description

technical field [0001] The invention relates to a treatment device and method for saline wastewater in an industrial park, belonging to the field of water treatment in environmental protection. Background technique [0002] At present, there are basically two options for the treatment of salty wastewater in chemical industry parks: traditional process and improved process. [0003] Traditional process: adopt traditional multi-media filter + ultrafiltration + two-stage roll reverse osmosis + evaporation pond process. In some projects, a roll-type reverse osmosis membrane system is actually used. With this traditional process, the system recovery rate is within 80%, and a large area of ​​evaporation pond is required to produce concentrated water. [0004] Disadvantages: large investment, large land occupation, high operating costs, and large negative impact on the environment; [0005] Improved process: It is an advanced process that has just emerged in China. It is based o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10
CPCY02A20/131
Inventor 郭强
Owner 郭强
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