Foreword
The Central and State Pollution Control Boards are constituted under the Water (Prevention & Control of Pollution) Act, 1974. The Boards under the Act are empowered to lay down and enforce stream and effluent standards to meet the objective of maintaining and restoring the (wholesomeness of water. The present emphasis is on source control of industrial wastewater discharges. The Boards have adopted Minimal National Standards (MINAS) for each type of industries. The Central Pollution Control Boardin colla- boration with State Boards has initiated a nation-wide action oriented pro- gramme in respect of Chlor-Alkali, Man-made Fibre, Oil Refinery, Sugar and Distillery Lndustries to implement MINAS.Under the programme a detailed investigation of M/s Harihar Polyfibr,es, 'Karnataka was undertaken. The investigation was conducted and the report prepared by Dr. lnamul Haq, Scientist, Central Board under the constant guidance of Dr. K.R. Ranganathan, Member Secretary. This report highlights- the performance and achievability of the existing zinc treatment system in the in1ustry. The sources of various discharges and quantum of zinc emanating from different process units are identified and steps to minimize loss of zinc suggested.