Experience in industrial wastewater treatment of woodworking enterprise system

International Workshop "Advanced Technologies in Material Science, Mechanical and Automation Engineering – MIP: Engineering – 2019"

材料科学;机械制造;原子能学

Isakov, V.G.^1 ; Dyagelev, M.Y.^1 ; Varfolomeeva, O.I.^1 ; Abramova, A.A.^1 ; Chvorenkov, D.A.^1

Kalashnikov Izhevsk State Technical University, Studencheskaya 7, Izhevsk

426069, Russia^1

关键词: Additional treatment;    Aluminium sulphate;    Chemical reagents;    Enterprise system;    Industrial wastewater treatment;    Industrial wastewaters;    Mechanical cleaning;    Technological scheme;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/537/6/062042/pdf
DOI  :  10.1088/1757-899X/537/6/062042

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

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.