Low-cost concentration reduction and resourceful treatment process for high-salinity wastewater

A high-salt wastewater treatment technology, applied in water/sewage treatment, heating water/sewage treatment, water/sewage multi-stage treatment, etc., can solve the problem of high investment cost and operation cost, inability to realize resource utilization, product process impact and other issues, to achieve the effect of reducing operating costs, realizing resource-based processing, and ensuring service life and operating cycle

Pending Publication Date: 2020-09-18
HUADIAN ELECTRIC POWER SCI INST CO LTD
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Problems solved by technology

However, the investment cost and operating cost of this treatment technology are relatively high, and the treated product is difficult to handle or has an impact on the subsequent product process, so resource utilization cannot be realized

Method used

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  • Low-cost concentration reduction and resourceful treatment process for high-salinity wastewater

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Embodiment Construction

[0016] The present invention will be further described in detail below in conjunction with the accompanying drawings and through the examples. The following examples are to explain the present invention and the present invention is not limited to the following examples.

[0017] Example.

[0018] see figure 1 , In this embodiment, a low-cost concentration reduction and resource treatment process for high-salt wastewater includes a low-temperature flue gas / hot air heating, concentration and reduction system 1, a softening and turbidity removal pretreatment system 2, and a nanofiltration salt separation system 3 And the bipolar membrane electrodialysis resource treatment system 4, the high-salt wastewater inlet interface of the low-temperature flue gas / hot air heating, concentration and reduction system 1 is connected to the high-salt wastewater pipeline 5, and the low-temperature flue gas / hot air heating, concentration and reduction system The steam condensate reuse outlet of ...

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Abstract

The invention discloses a low-cost concentration reduction and resourceful treatment process for high-salinity wastewater, and solves the problems that in the prior art, the current environmental protection requirement cannot be met, the investment and operation cost is high, and resourceful utilization of a treated product cannot be realized. The process adopts a low-temperature flue gas/hot airheating concentration reduction system, a softening turbidity removal pretreatment system, a nanofiltration salt separation system and a bipolar membrane electrodialysis resourceful treatment system.Through the coupling synergistic effect of multiple systems, a new process is provided for treatment of high-salinity wastewater, the design is reasonable, the national environmental protection requirement is met, the operation cost is low, and the treatment product can be recycled.

Description

technical field [0001] The invention relates to the technical field of water pollution control, in particular to the related fields of wastewater treatment and resource utilization. Background technique [0002] In the process of industrial production, a large amount of high-salt wastewater will be produced, such as desulfurization wastewater from thermal power plants, acid-base wastewater, coal chemical wastewater, and high-salt wastewater from industrial parks. These high-salt wastewater have the characteristics of complex composition and unstable water quality and quantity , so its processing is difficult and the processing cost is high. With the continuous improvement of environmental protection requirements, more and more attention has been paid to the treatment of high-salt wastewater. At present, common treatment methods include conventional chemical precipitation technology and zero-discharge treatment technology. For example, the "neutralization-precipitation-coagu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/10
CPCC02F9/00C02F1/02C02F5/08C02F1/444C02F1/42C02F2001/425C02F1/4693C02F1/442
Inventor 晋银佳兰永龙朱跃尤良洲王仁雷唐国瑞喻江张山山
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD
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