Treatment of waste generated from cement industry and their treatment- a review

Abstract

Cement manufacturing Industries is one of the key sectors of the Indian Economy has been rapidly growing at a rate over 8% and it is estimated to grow more. Cement is a crucial product for the society delivering easy secure reliable modern housing and infrastructure. The contribution of pollution towards the environmental degradation is increasing at an alarming rate. A good number of cement plants have made significant efforts in controlling and regulating the emissions by well organized control measure like Electro Static Precipitator (ESP) and Bag Filter APCD devices and these plants are maintaining their pollution level. Fugitive emissions (emission not from stack) in cement plant is still is a major problem and are waiting for new effective technologies. This review mainly focuses on overview of the pollution of air and water and solid waste in cement industries and the main sources of environmental pollution in cement industries. The review carried out here shows techniques which are in practice in present to treat the waste (air, water and solid) generated from cement industry including co-processing and pollution control at each stage of cement production. Several countries, including India, have introduced strict ecological and environmental standard for cement industries. With more strict controls expected in the future, it is essential that control measures be implemented to minimize effluent problems.