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Membrane system for realizing high-power concentration

A technology for concentrating membranes and membrane systems, applied in the field of water pollution treatment, can solve the problems of low concentration ratio of membrane systems

Active Publication Date: 2021-02-09
烟台金正环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the deficiencies of the prior art, the present invention provides a method and membrane system for realizing high concentration, which mainly solves the problem of low concentration ratio of the membrane system

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  • Membrane system for realizing high-power concentration
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  • Membrane system for realizing high-power concentration

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0035] attached figure 1 It is a flowchart of the present invention. Including the pretreatment system, the pretreatment system treats the raw water through chemical, physical, biochemical and other methods to reduce the alkalinity, hardness and turbidity of the raw water so that it can meet the requirements of entering the membrane system.

[0036] The high-concentration membrane system can be designed in a multi-stage manner according to the water quality and quantity and specific conditions, and the multi-stage design method can be applied to different water inflow situations. The concentrated water of each section enters the next section through the pipeline, and the water quality and water quantity balance can be realized by setting booster pumps and circulating pumps between the sections, so as to meet the requirements of the inlet water flow and...

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Abstract

The invention discloses a membrane system for realizing high-power concentration, and belongs to the technical field of water pollution treatment. The system comprises a pretreatment system, a high-concentration membrane system, a water production tank and a secondary membrane system. The pretreatment system is connected with the high-concentration membrane system, the high-concentration membranesystem is connected with the water production tank, and the water production tank is connected with the secondary membrane system; and in addition, the water production tank is connected with the high-concentration membrane system, and the secondary membrane system is connected with the high-concentration membrane system. According to the system, the osmotic pressure difference between a concentrated water side and a water production side is reduced by controlling the desalination rate of the membrane assembly, so that high-power concentration is realized under relatively low operation pressure, and the highest concentration can be close to a saturated state.

Description

technical field [0001] The invention belongs to the technical field of water pollution treatment, and relates to a membrane system for realizing high concentration. Background technique [0002] A large amount of wastewater is often produced in coal mining, landfill, steel coking, coal chemical industry and various industrial production. These wastewaters mainly contain Na + , SO 4 2- , Cl - and some refractory organic matter. The direct discharge of such wastewater will cause water pollution, soil poisoning, and even endanger human health. At present, according to national and regional policies, zero-discharge treatment of such wastewater has become an inevitable trend. [0003] The mainstream process of zero discharge is: through "pretreatment + membrane system" or "pretreatment + electrodialysis" and other processes, the wastewater is initially concentrated, and then the concentrated solution is treated through evaporation crystallization, freezing crystallization a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/14C02F101/10C02F101/12
CPCC02F1/00C02F1/44C02F3/00C02F9/00C02F2101/101C02F2101/12Y02A20/131
Inventor 李越彪林会杰李辉周宇飞张鹏李志伟张卓
Owner 烟台金正环保科技有限公司
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