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Reverse osmosis concentrated water treatment system with high permanent hardness

A reverse osmosis concentrated water and treatment system technology, applied in the field of sewage treatment, can solve the problems of increased difficulty in crystallization and separation, energy consumption, and high output of concentrated brine, and achieve the effects of saving chemical costs, increasing production, and reducing tediousness

Pending Publication Date: 2019-04-09
GREENTECH ENVIRONMENTAL CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, foreign substances are introduced in this process, which adds a new burden to downstream processing
Secondly, the water production rate of reverse osmosis is generally only 75%, the output of concentrated brine is high, and the concentrated brine contains scale inhibitors, which makes crystallization and separation more difficult
Furthermore, the use of technologies such as strong evaporation and crystallization in the zero-emission process consumes a lot of energy, and the newly introduced carbonate also increases the cost of softening agents. Therefore, simple and efficient crystallization and concentration technology is required to recover sulfate in water

Method used

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  • Reverse osmosis concentrated water treatment system with high permanent hardness
  • Reverse osmosis concentrated water treatment system with high permanent hardness

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Embodiment Construction

[0018] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0019] It should be understood that the terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may also be meant to include the plural forms unless the context clearly dictates otherwise. The terms "comprising", "comprising", "containing" and "having" are inclusive and thus indicate the presence of stated...

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Abstract

The invention belongs to the technical field of sewage treatment, and particularly relates to a reverse osmosis concentrated water treatment system with high permanent hardness. The treatment system comprises a primary crystallizer unit, a primary reverse osmosis filter unit, a secondary crystallizer unit, a lime softening unit and a secondary reverse osmosis filter unit. The treatment system caneliminate permanent hardness and temporary hardness in strong brine, and the hardness in strong brine can be reduced to 50mg / L or lower.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to a treatment system for reverse osmosis concentrated water with high permanent hardness. Background technique [0002] At present, in the production process of petrochemical, electric power, chemical fiber and other industries, a large amount of sulfate wastewater will be produced. After the wastewater is treated by reverse osmosis, the regenerated water obtained can be reused as production water, but the treatment of the high hardness concentrated water become a technical and economical problem. If reverse osmosis concentrated water is discharged directly, it will definitely have a very adverse impact on the surrounding environment. Therefore, for the recycling or product reprocessing of concentrated brine, it will be a very challenging and significant task to achieve zero discharge in the desalination process of brine. At present, for concentrated brine wi...

Claims

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Application Information

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IPC IPC(8): C02F9/04C01F11/46C02F101/10
CPCC01F11/46C02F9/00C02F1/38C02F1/001C01P2006/80C02F2301/08C02F2001/5218C02F2101/101C02F1/5236C02F1/441C02F1/5281C02F5/02C02F2103/365B01D2311/268B01D2311/2676B01D2311/04B01D2317/022B01D61/026B01D2311/2643B01D2311/26
Inventor 黎泽华张巧云韩慧铭刘渊苏英强张和兴
Owner GREENTECH ENVIRONMENTAL CO LTD
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