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A brief study on the experimental investigation for the treatment of industrial waste water (washing water) had been carried out for the analysis of better treatment of water by using natural coagulants. While treatment, natural coagulant such as Strychnospotatorum (nirmali seeds), Eirchorrniacrassipes (water hyacinth) are used for waste water treatment. This includes the various parameters such as pH, sulphates, chlorides, total solids, total suspended solids (TSS), total dissolved solids (TDS), acidity, alkalinity, optimum coagulant dosage (jar apparatus), biological oxygen demand (BOD) and chemical oxygen demand(COD).These natural coagulants, when used for treatment of waters with low to medium turbidity range (50–500 NTU), are comparable to their chemical counterparts in terms of treatment efficiency. The test results indicated that the natural coagulants give better results which can be used as either separately or in combination with chemical coagulant alum. The natural coagulant produces lesser floc, hence the cost of sludge treatment is reduced. From the natural coagulants used, water hyacinth gives better result than nirmali seed. The natural coagulants can be used for treatment of textile waste wherever it is available in plenty.

Experimental Investigation on Treatment of Industrial Waste Using Natural Coagulant