... , harmless, safe and reliable.4, turbidity, decolorization and removal of oil, dehydration, sterilization, algae, removal of COD, BOD and heavy metal ... 6-9, purified water pH and total alkalinity range, the processing equipment corrosion.6, the micro pollution, including algae, low temperature and ... water purification effect is good.7, less dosage, low costs, processing costs can be saved as 20%-50%.