The First Zero Discharge Demonstration Project of Papermaking Wastewater in China
In the past 30 years, China’s industrial economy has achieved great development. However, the governance on water environment in industrial parks was relatively backward. Water pollution has approached their environmental capacities. It is of great necessity to control water pollution in industrial parks.
In April 2014, the zero discharge demonstration project of papermaking wastewater was the first of its kind to be implemented in Nantong China, which has a daily disposal of 17,500 tons of wastewater.
Six months later, on October 28, 2014, Zhejiang Kaichuang Environmental Technology Co., Ltd. accomplished the entire project and achieved the first zero discharge demonstration project of papermaking wastewater.
Zhejiang Kaichuang Environmental Technology Co., Ltd. have worked through a great deal of technical problems in this project with some independent innovations. Most notably, the application of a Multistage Membrane Separation system and a fourth-generation Creflux Concrete-Membrane have contributed greatly to achieve this project.
This project has remarkable effects on energy conservation and emission reduction. Each year, it makes a great contribution to society and the environment, by reducing 6,387,500 tons in papermaking wastewater, and cuts down the COD emissions by 51,100 tons. Meanwhile, it has achieved highly efficient use of wastewater by saving 6,259,800 tons of tap water.
This project was the first zero discharge project of papermaking wastewater in over ten thousand tons level in China, which has been a model for other projects in wastewater reduction and efficient reuse of industrial water.