... acid, phosphoric acid slurry such as the transmission medium.2) The non-ferrous metal smelting industry: especially suitable ... Pink production, all kinds of dyes, pigment production,non-metallic mineral processing industries.4), chlor-alkali industry: hydrochloric ... paper making wastewater, textile wastewater, food wastewater, sewage, the pharmaceutical industry, sewage, etc.).6) iron and steel ...