There are many large and medium paper industries located in India. It covers major demands of world requirement and this industry is in demand. Paper industries require bulk quantity of treated water for production of good quality of paper. So naturally wastewater quantity is also high. This wastewater contains hazardous chemicals like lignin, Ligno sulfonate, Caustic, Fibers and so on.
These chemicals are very costly. After processing leftover wastewater contains high quantity of chemicals which requires to recover from waste water if possible. Here membrane technology is playing a vital role to recover valuable chemical from wastewater. It not only recovers valuable chemicals but also recycle fresh water which can reuse in process again. Now a day pollution authority demands to recycle as much as water from treated effluent by applying membrane technology as it is proven for almost all industries effluent wastewater.