| Autor: |
Isakov, V G, Dyagelev, M Y, Varfolomeeva, O I, Abramova, A A, Chvorenkov, D A |
| Zdroj: |
IOP Conference Series: Materials Science and Engineering; May 2019, Vol. 537 Issue: 6 p062042-062042, 1p |
| Abstrakt: |
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. |
| Databáze: |
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