... Al2Cl (OH) 5Technical standards: national standards for product quality in line with GB15892-2009Appearance: white, golden yellow, tawny, reddish ... dosing the amount of dosing, and look at adjusting in the running. See fewer sedimentation tanks alum, and dark, the ... water purification.C, urban wastewater treatment.D, useful substances in industrial waste water and solid waste recycling, promoting the ...