The highest allowable concentration of cyanide in surface water and indoor air
September 14, 2024
China's industrial enterprise design hygiene standards stipulate the highest allowable concentration of cyanide in surface water and indoor air. The maximum allowable concentration of cyanide in surface water is less than 0.05 mg / liter of domestic water; less than 0.5 mg / liter of industrial sewer discharge; less than 1 mg / liter of cyanide-containing sewage into the tailings dam. The maximum allowable concentration of cyanide in the air is not more than 0.3 mg/ m3 . Grating Fence,Metal Grate Fence,Steel Grating Fence,Metal Grate Fencing ANPING COWAN WIRE MESH & MACHINES CO., LTD , https://www.cowanfences.com