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A treatment method and device for high-salt wastewater with zero discharge and salt separation

A technology of high-salt wastewater and treatment method, which is applied in water/sewage multi-stage treatment, water/sludge/sewage treatment, osmosis/dialysis water/sewage treatment, etc. Affect the surrounding environment and enterprise economic benefits, efficient treatment of wastewater, etc., to achieve the effect of reducing investment costs and space, improving effluent quality, and reducing chemical dosage

Active Publication Date: 2018-07-20
华电水务工程有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of high-salt wastewater treatment, there are often problems such as the treatment and utilization of sludge and residue generated during the treatment process, secondary pollution, separation and utilization of salt components, and recycling of flocculants.
For enterprises, the investment in the treatment of high-salt wastewater is huge, but it is often difficult to efficiently treat wastewater and achieve zero discharge, which directly affects the surrounding environment and the economic benefits of enterprises

Method used

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  • A treatment method and device for high-salt wastewater with zero discharge and salt separation
  • A treatment method and device for high-salt wastewater with zero discharge and salt separation
  • A treatment method and device for high-salt wastewater with zero discharge and salt separation

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Embodiment 1

[0142] Embodiment 1 A treatment method for high-salt wastewater with zero discharge and salt separation, comprising the following steps: S1 wastewater pretreatment; S2 wastewater reduction and concentration; S3 crystallization.

[0143] Step S1: The wastewater pretreatment process is a chemical softening-tubular microfiltration treatment process, including the following steps:

[0144] S1-1 High-salt wastewater first enters the regulating tank, and sodium hypochlorite is added to the regulating tank; the effluent from the regulating tank enters the first reaction tank, and sodium hydroxide is added to the first reaction tank for reaction; the effluent from the first reaction tank enters the second reaction tank, and the second reaction Add sodium carbonate solution to react in the pool;

[0145] S1-2 After the reaction in the second reaction tank, the effluent overflows into the concentration tank, and the concentration tank and the tubular microfiltration system carry out wat...

Embodiment 2

[0149] A treatment method for high-salt wastewater with zero discharge and salt separation, comprising the following steps: S1 wastewater pretreatment; S2 wastewater reduction and concentration; S3 crystallization.

[0150] Step S1: The wastewater pretreatment process is a chemical softening-tubular microfiltration treatment process, including the following steps:

[0151] S1-1 High-salt wastewater first enters the regulating tank, and sodium hypochlorite is added to the regulating tank; the effluent from the regulating tank enters the first reaction tank, and sodium hydroxide is added to the first reaction tank for reaction; the effluent from the first reaction tank enters the second reaction tank, and the second reaction Add sodium carbonate solution to react in the pool;

[0152] S1-2 After the reaction in the second reaction tank, the effluent overflows into the concentration tank, and the concentration tank and the tubular microfiltration system carry out water circulatio...

Embodiment 3

[0157] A treatment method for high-salt wastewater with zero discharge and salt separation, comprising the following steps: S1 wastewater pretreatment; S2 wastewater reduction and concentration; S3 crystallization.

[0158] Step S1: The wastewater pretreatment process is a chemical softening-tubular microfiltration treatment process, including the following steps:

[0159] S1-1 High-salt wastewater first enters the regulating tank, and sodium hypochlorite is added to the regulating tank; the effluent from the regulating tank enters the first reaction tank, and sodium hydroxide is added to the first reaction tank for reaction; the effluent from the first reaction tank enters the second reaction tank, and the second reaction Add sodium carbonate solution to react in the pool;

[0160] S1-2 After the reaction in the second reaction tank, the effluent overflows into the concentration tank, and the concentration tank and the tubular microfiltration system carry out water circulatio...

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Abstract

The invention discloses a high-salt waste water zero emission and salt separation processing method and device. The method includes the following steps of 1, waste water preprocessing, 2, waste water decrement and concentration and 3, crystallization. By means of the high-salt waste water zero emission and salt separation processing method and device, waste water can be processed efficiently, liquid and salt ingredients in the waste water are effectively separated, a product obtained after waste water can be recycled or sold as other industrial products, so that zero emission of waste water is achieved. The method is simple and easy to implement, high in processing efficiency and small in energy consumption; by the adoption of the method, pollution to the environment is avoided, an active function is played on improvement of regional water environment quality, the utilization rate of waste water is raised, production cost is saved, and environmental and social benefits are quite remarkable. The device is high in operation efficiency, convenient to assemble, low in cost and small in energy consumption.

Description

technical field [0001] The invention relates to a treatment method and device for zero discharge and salt separation of high-salt wastewater, specifically belonging to the field of high-salt wastewater treatment. Background technique [0002] Industrial wastewater refers to the wastewater, sewage and waste liquid produced in the process of industrial production, which contains industrial production materials, intermediate products and products lost with water, as well as pollutants produced in the production process. With the rapid development of industry, the types and quantities of wastewater have increased rapidly, and the pollution of water bodies has become increasingly widespread and serious, threatening human health and safety. Therefore, for the protection of the environment, the treatment of industrial wastewater is more important than the treatment of urban sewage. [0003] There are usually three types of industrial wastewater: [0004] The first is to classify ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/10C01D3/04C01D5/00C02F1/44
Inventor 李宏秀秦树篷刘志江潘孝宇李文杰潘旗周保卫李雪忠张存柱
Owner 华电水务工程有限公司
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