Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 343126
Title Performance of UASB septic tank for treatment of concentrated black water within DESAR concept
Author(s) Kujawa-Roeleveld, K.; Fernandes, T.; Wiryawan, Y.; Tafwik, A.; Visser, M. de; Zeeman, G.
Source Water Science and Technology 52 (2005)1-2. - ISSN 0273-1223 - p. 307 - 313.
Department(s) Sub-department of Environmental Technology
Research Institute for Animal Husbandry
Publication type Refereed Article in a scientific journal
Publication year 2005
Keyword(s) afvalwater - scheiding - anaërobe behandeling - hergebruik van water - afvalwaterbehandeling - verzamelen - waste water - separation - anaerobic treatment - water reuse - waste water treatment - collection - waste-water
Categories Waste Water Treatment
Abstract Separation of wastewater streams produced in households according to their origin, degree of pollution and affinity to a specific treatment constitutes a starting point in the DESAR concept (decentralised sanitation and reuse). Concentrated black water and kitchen waste carry the highest load of organic matter and nutrients from all waste(water)streams generated from different human activities. Anaerobic digestion of concentrated black water is a core technology in the DESAR concept. The applicability of the UASB septic tank for treatment of concentrated black water was investigated under two different temperatures, 15 and 25 °C. The removal of total COD was dependent on the operational temperature and attained 61 and 74% respectively. A high removal of the suspended COD of 88 and 94% respectively was measured. Effluent nutrients were mainly in the soluble form. Precipitation of phosphate was observed. Effective sludge/water separation, long HRT and higher operational temperature contributed to a reduction of E. coli. Based on standards there is little risk of contamination with heavy metals when treated effluent is to be applied in agriculture as fertiliser.
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