Upgrading a paper industry effluent treatment plant for capacity expansion with recourse to recycling effluent

摘要

Upgradation of an effluent treatment plant (ETP) to meet capacity expansion of a large-scale paper industry for recycle of treated effluent is addressed. Performance evaluation of the plant under existing operating conditions and measures delineated for effective performance of the plant is also reported. A viable treatment alternative based on treatability studies is recommended for upgrading the existing facility for additional wastewater load from capacity expansion. The treatment alternative intends to provide effluent quality meeting the requirements for recycle in the paper machine section through modifications and proposed additional units. Implementation of the proposed scheme will result in conserving 28 500 m~3 per day of fresh water demand.