Abstract: The disadvantages of traditional technology for viscose sewage treatment were analyzed.According to several experiments, the primary physico-chemical method was confirmed. The optimized conditions were determined as follows, the pH value of aeration neutralization pool was 3, the dosage of FeSO4 and H2O2 in oxidation pool were both 800 mg/L, the pH value of neutralization coagulation pool was between 8 and 9, and the PAM dosage was 3 mg/L. After comparing the sludge dewatering effect of plate pressure filter with belt filter, the authors concluded that the effect of the former one was better.

Key words: viscose sewage; physico-chemical method; sludge dewatering