Sethi G.,Century Pulp and Paper Mill |
Kumar D.,Century Pulp and Paper Mill |
Sarna J.,Century Pulp and Paper Mill |
Maurya L.,Century Pulp and Paper Mill |
Ram R.B.,Century Pulp and Paper Mill
IPPTA: Quarterly Journal of Indian Pulp and Paper Technical Association | Year: 2011
In India an average of 70-75 m3 of high quality ground water and around 22 - 25 GJ of energy is needed for the production of one ton of paper. As economic circumstances are changing and environmental legislation stiffens, paper mills are forced to minimize their energy- and water consumption. Due to increasing local taxes and regulations on energy and water consumption there is a need for further water system closure in paper industry. Purifying and recycling process water is a way to minimize the use of potable water and the production of wastewater in the industry. The use of well water as fresh water is attracting more and more attention because of environmental reasons like dry up in certain water sensitive areas. The degree of pollution of industrial effluent emissions on surface water areas is also becoming more important. These aspects make reduction of water consumption a major issue. The most important aspects for further water reuse for the paper production process are: a more stable process and product quality, a higher runnability, better energy efficiency, reduction in water demand and decrease of environmental pollution. This paper focuses on the upcoming membrane bioreactor technology and the applications in the paper industry for treatment and reuse of wastewater. An application in the paper industry is discussed: Pilot trial with a closed loop system at the paper mill.