Treatment of Textile Wastewater Using a Natural Flocculant

The physicochemical treatment of wastewater is of substantial interest, especially when conventional treatments by biological processes are not amenable. Among the current chemical processes used for industrial wastewater treatment, coagulation-flocculation has received a large attention for high po...

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Bibliographic Details
Published in:Environmental technology 2005-06, Vol.26 (6), p.705-712
Main Authors: Aboulhassan, M.A., Souabi, S., Yaacoubi, A., Baudu, M.
Format: Article
Language:English
Subjects:
Applied sciences
COAGULATION FLOCCULATION
Exact sciences and technology
Flocculation
General purification processes
Industrial Waste
NATURAL FLOCCULENT
Pollution
Textile Industry
TEXTILE WASTEWATERS
Wastewaters
Water Pollutants, Chemical
Water treatment and pollution
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Summary:The physicochemical treatment of wastewater is of substantial interest, especially when conventional treatments by biological processes are not amenable. Among the current chemical processes used for industrial wastewater treatment, coagulation-flocculation has received a large attention for high pollutant removal efficiency. This paper summarizes the results of a textile wastewater treatment process aimed at the destruction of colour by coagulation-flocculation process and using an organic natural flocculant: tannic substances. Jar-test experiments were carried out in order to determine the optimum conditions for the removal of organic matter and color. Treatment with studied flocculent (Polysep3000) proved to be effective in a wide pH range (pH ≤ 10), very effective in removing the color (96 %) and a fraction of the COD (40-50 %) from the textile wastewater. Polysep3000 is compared to Al 2 (SO 4 ) 3 and FeCl 3 for sludge production. Polysep3000 seems to be suitable for yielding a high removal of color (> 90 %) and corresponding low volume of settled sludge.
ISSN:0959-3330
1479-487X
DOI:10.1080/09593330.2001.9619510