Improvements of choice of the water-chemical regime of reserve osmosis installation

The effectiveness of monitoring the composition and intensity of deposits on reverse osmosis membranes is shown. The use of test installations of the NGO "NPK Mediana-Filter" speeds up and significantly reduces the labor intensity of monitoring deposits in the conditions of industrial oper...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2021-01, Vol.1035 (1), p.12028
Main Authors: Odoevtseva, M V, Spiridonov, D A
Format: Article
Language:English
Subjects:
Cleaning
Composition
Demineralizing
Deposits
Formulations
Membranes
Monitoring
Osmosis
Reverse osmosis
Service life
Water treatment
Water treatment plants
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Summary:The effectiveness of monitoring the composition and intensity of deposits on reverse osmosis membranes is shown. The use of test installations of the NGO "NPK Mediana-Filter" speeds up and significantly reduces the labor intensity of monitoring deposits in the conditions of industrial operation of reverse osmosis installations. The effectiveness of determining the composition and intensity of deposits on the membrane surface using the energy dispersive analysis method was revealed. The effectiveness of commercial formulations for cleaning intensely contaminated membranes is not always sufficient. The use of ready-made solutions from various manufacturers excludes the possibility of a targeted selection of the concentration of a solvent to remove deposits from the membrane surface, provided that these solutions are safe for the operating parameters of the membranes. The monitoring results made it possible to implement a targeted choice of compositions of detergent mixtures, their combinations and the regime of their effect on deposits on membranes, provided that the pH of the solutions is stable throughout the entire cleaning time. Controlling the intensity of the formation of deposits according to the data of test installations will reduce the laboriousness of choosing the optimal water-chemical regime of an industrial reverse osmosis plant, which will reduce the rate of formation of deposits, increase the service life of membrane elements of an industrial water treatment plant with a consistently high quality of demineralized water.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/1035/1/012028