the world market for polyacrylamide 4): dominated by snf in netherlands
Japan leads the world in membrane water treatment technology. Currently, Japanese manufacturers have about a 60 percent share of the global water treatment membrane market. Japan's global market share of reverse osmosis membrane products, which are highly energy efficient but particularly challenging technically, is nearly 70 percent.
3. Gray water is miscellaneous domestic wastewater except night soil. 4. Though not many facilities are installed in individual houses, the number is increasing. Various Systems for Treatment of Night Soil, Sewage and Wastewater in Japan Public water bodies
