摘要：Pulp and paper mill effluents contain various organic and inorganic pollutants. The polluting strength of these effluents are measured as COD and BOD which range between 5000- 10000 and 1500-6000 mg/L respectively. In addition to these, heavy metals such as Cd, Cr, Cu, Fe, Ni, Pb and Zn also find place in these effluents. By adopting proper treatment technologies these paper mill effluents can be transformed into environmentally safe and harmless form for disposal. The treated effluents from a paper mill were collected, analysed and tested for their biological safety. Day old broiler chicks were taken for the study. The treatments were 0%, 25%, 50%, 75% and 100% effluent as drinking water. The management practices viz. brooding, feed etc were identical. The treatments were compared for weight gain, feed & water consumption. The effect of replacement of fresh water with treated effluent was found to be innocuous, and birds exhibited normal growth even under 100% water replacement.
关键词：Paper mill effluent; Growth of chicks; Biological safety.
