Industrial, process, circulating and waste water clarification, giving water for industrial process in chemical, pulp and paper industries and sewage treatment, involves adding aluminum nitrate and biological removal of nitrate

摘要

Process for treating industrial, process, circulating and waste water to separate dissolved and undissolved contents and using the clarified water for industrial processes in the chemical, pulp and paper industries and sewage treatment comprises adding monomeric, dimeric and polymeric aluminum nitrate compounds (I) and removing the added nitrate anion from the water biologically.