Combining activated sludge process with membrane separation to obtain recyclable quality water from paper mill effluent
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- 作者：Sudheer Kumar Shukla ; Vivek Kumar…
- 关键词：Activated sludge process ; Adsorbable organic halides ; Membrane separation ; Paper industry ; Paper mill effluent
- 刊名：Clean Technologies and Environmental Policy
- 出版年：2015
- 出版时间：March 2015
- 年：2015
- 卷：17
- 期：3
- 页码：781-788
- 全文大小：623 KB
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18. M?ntt?ri, M, Nuortila-Jokinen, J, Nystr?m, M (1997) Influence of filtration conditions on the performance of NF membranes in the filtration of paper mill total effluent. J Membr Sc - 刊物类别：Engineering
- 刊物主题：Industrial and Production Engineering
Industrial Chemistry and Chemical Engineering
Industrial Pollution Prevention
Environmental Economics - 出版者：Springer Berlin / Heidelberg
- ISSN：1618-9558
文摘
The present study was carried out for the treatment of paper mill effluent using combination of activated sludge process and membrane separation. An integrated paper mill employing OCEOPHH sequence (oxidation, chlorination, alkali extraction re-enforced by oxygen and peroxide, hypo-1, and hypo-2) for the bleaching of hardwood pulp was selected for the study. The purpose of this work was to examine the water quality and membrane performance when combining activated sludge process with different membrane separation processes in series. Pollutant removal including adsorbable organic halides (AOX) was compared among different treatment combinations; (i) ASP?+?microfiltration (MF), (ii) ASP +MF?+?ultrafiltration (UF), (iii) ASP +MF?+?UF?+?nanofiltration (NF), and (iv) ASP +MF?+?UF?+?NF?+?reverse osmosis (RO) to select the optimal treatment scheme for water recycling in the paper mill. Different initial inlet pressures were used for the UF and NF (6.8, 10.3, and 13.7?bar) and for RO (10.3, 13.7, and 17.2) The retentate from each membrane was recycled back to the feed and retreated until the inlet pressure increased to the maximum cut-off pressure for each membrane. After separation, 100?% total suspended solids, total dissolved solids, color removal and 94.2?% chemical oxygen demand, and 86?% AOX removal was observed. This study suggests the potential application of the combination of membrane separation with activated sludge process for recycling water in the paper industry.