Experience in industrial wastewater treatment of woodworking enterprise system

The paper presents the results of the experience of industrial wastewater reuse after cleaning from formaldehyde-containing compounds in the water supply system at a woodworking enterprise. The drains after the main stage of mechanical cleaning, cascade precipitators, were additionally settled with...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2019-05, Vol.537 (6), p.62042
Main Authors: Isakov, V G, Dyagelev, M Y, Varfolomeeva, O I, Abramova, A A, Chvorenkov, D A
Format: Article
Language:English
Subjects:
Aluminum sulfate
Industrial wastes
Mechanical cleaning
Polyacrylamide
Precipitators
Reagents
Resins
Sewage disposal
Solid phases
Wastewater treatment
Water reuse
Water supply
Water treatment
Woodworking
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Summary:The paper presents the results of the experience of industrial wastewater reuse after cleaning from formaldehyde-containing compounds in the water supply system at a woodworking enterprise. The drains after the main stage of mechanical cleaning, cascade precipitators, were additionally settled with the addition of chemical reagents: 5% aluminium sulphate solution, 6% polyacrylamide solution and 10% sodium solution. In this case, the maximum cleaning effect was achieved by 7% higher without the use of reagents. A detailed analysis of the dry residue showed that during the processes of settling up to 28% of the dissolved resins are transferred to the solid phase, and the additional treatment with chemical reagents no longer contributes to the transition of the dissolved resins to a dispersed state. As a modification of the technological scheme of industrial wastewater treatment, two options were proposed that differ in the preliminary preparation of the effluent before evaporation.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/537/6/062042