Physico-chemical treatment of wastewater and efficient technology / Xiamen materialized efficient wastewater treatment technology / Fujian materialized efficient wastewater treatment technology Which is better? Environmental Science and Technology Co., Ltd. Xiamen Zhong Europe www.xmzhongou.com. The company developed the physico-chemical treatment of wastewater and efficient technology is the application of the combined effects of physical and chemical methods to purify wastewater. This technique is typically a wastewater treatment system by physical and chemical methods of composition, or that individual processing method including physical and chemical processes, such as flotation, stripping, crystallization, adsorption, extraction, electrolysis, electrodialysis, ion exchange, reverse osmosis and advanced oxidation technology.