Water savings and sludge minimization in a beet-sugar factory through re-design of the wastewater treatment facility |
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| Institution: | 1. Chemical Engineering Department, ITQUIMA, University of Castilla-La Mancha, Av. Camilo Jose Cela, 13071 Ciudad Real, Spain;2. Chemical Engineering Department, Enrique Costa Building, University of Castilla-La Mancha, Av. Camilo Jose Cela, n 12, 13071 Ciudad Real, Spain;3. NEXT ENERGY· EWE Research Centre for Energy Technology at The University of Oldenburg, Carl-von-Ossietzky Str. 15, 26129 Oldenburg, Germany;1. Department of Environmental Science and Engineering, Tsinghua University, Beijing 100084, China;2. College of Agronomy and Biotechnology/Center of Biomass Engineering, China Agricultural University, Beijing 100193, China;1. Department of Orthopaedic Surgery, Kobe University Graduate School of Medicine, 1-1 Rokkodai-cho, Nada-ku, Kobe, Hyōgo Prefecture 657-8501, Japan;2. Department of Biomedical Engineering, Doshisha University, Karasuma-Higashi-iru, Kyoto, Kyoto Prefecture 602-8580, Japan;3. Department of Orthopedic Surgery, Rush University Medical Center, 1653 W. Congress Parkway, Chicago, IL 60612, USA;4. Department of Orthopaedic Surgery, University of California San Diego School of Medicine, 9500 Gilman Drive, La Jolla, San Diego, CA 92093, USA |
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| Abstract: | The task of rehabilitating the already existing waste treatment facilities of a sugar factory was undertaken. A detailed survey of the water and wastewater streams indicated a necessity for immediate action towards water conservation within the plant. The spent waters from the beet-washing unit were first being intercepted at an integrated solids–liquid separation system (ISLSS) where they were partially recycled for reuse. Sludge from the ISLSS was going to an end-of-pipe treatment plant composed of lagoons. In order to conserve and recycle water, it was firstly deemed essential to modify the operating regime of the ISLSS. Consequently the sludge going to the lagoons could be decreased by one third. Next, the existing lagoons were re-arranged to comply with the discharge standards, at a very little extra cost. |
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