A nanofiltration salt separation process confirmation method based on isoelectric point identification

An isoelectric point and process technology, applied in chemical instruments and methods, membranes, reverse osmosis, etc., can solve the problems of unsuitable process requirements, low efficiency, complex process formulation process, etc., to improve the success rate and work efficiency, accurate definite effect
CN106830191BActive Publication Date: 2020-08-28SUZHOU XINER ENVIRONMENTAL TECH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SUZHOU XINER ENVIRONMENTAL TECH CO LTD
Publication Date
2020-08-28

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Abstract

The invention relates to a nanofiltration salt-dividing process confirmation method based on isoelectric point recognition. The method comprises the following steps of: S1, membrane screening: determining initial separation coefficients of different membranes on materials based on recognition on isoelectric points on the surfaces of different membranes; according to a selective preference principle, dividing the membranes with great initial separation coefficients and small relative isoelectric points into I membranes, II membranes, III membranes and IV membranes; S2, process parameter optimizing: optimizing the process parameters for the selected II membranes and III membranes, wherein the optimized parameters comprise operating pressure, operating flow, operating temperature and PH value of a separate material; and S3, process flow confirming: determining the membrane type according to the S1 and directly using the I membranes; optimizing the process parameters in the S2 for the II membranes and the III membranes; and directly abandoning the IV membranes. The method provided by the invention is integrally scientific and systematic and is easy to understand and maser, and the work efficiency is increased.
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Description

technical field

[0001] The invention belongs to the technical field of wastewater treatment, and relates to a method for confirming a nanofiltration salt separation process based on isoelectric point identification. Background technique

[0002] With the society's increasing requirements for environmental protection technology, salt separation technology has attracted more and more attention from different industries, especially some industries that produce saline wastewater or mixed salt wastewater, such as coal chemical industry, electroplating, printing and dyeing, etc. According to the development trend of environmental protection requirements at this stage, zero discharge is an inevitable development requirement. In the middle, only through advanced and reasonable salt separation technology can the final reduction and zero discharge be efficiently completed. At the same time, some industries can also recycle There are precious metals of economic value or high-purity ino...

Claims

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