... food industry: brewing, microzyme, juice, edible oil, vegetable oil, sauce, sugar mill, etc.C.mattallurgyindustry:gold ... wastewater, living wastewater, water treatment plant wastewater, steel plant wastewater, dust collecting wastewater, leather plant wastewater, seaport silt, red ... removing from air; widely used in metallurgical plant, chemical plant, sugar industry, dye house, pharmaceutical industry ...