Abstract: Use of chitosan and sodium alginate in treating effluent from dyeing and finishing process was studied. Chitosan and sodium alginate solutions were separately added into two samples of effluent containing acid chrome blue K dye, followed by mixing together the two samples. Since the positively charged chitosan and negatively charged sodium alginate precipitated each,waste dye was absorbed and separated from the solution. Experimental results showed that removal of waste dye is affected by the dosage of chitosan and sodium alginate,the ratio of chitosan to sodium alginate,treatment temperature,pH and time.