Landscape wastewater treatment process using polyaluminum chloride (iron) Step method Landscape wastewater Treatment process using polyaluminum chloride (iron) Step method Landscape water sources can be divided into two categories, surface water and groundwater, and sometimes Directly from the city water supply network system. According to the water quality of different water sources, respectively, using physical methods, physical and chemical rice to be processed, the higher the turbidity of raw water, the need for coagulation and sedimentation treatment, in general, polyaluminum chloride or aluminum chloride can be added, each Tons of water added to 20-50g, the suspension can be flocculated by sedimentation flocculation, reduce color, reduce bacteria. After coagulation sedimentation water filtration by ordinary sand filter. For plant conservation water, can be directly sprinkler irrigation, pollution-free emissions and treatment issues. Water drainage works according to the situation to determine the way; for the water flow is very small water, after the water can be discharged into the city storm water pipe network; water for larger water features, water circulation should generally be used, you can set the pump room, but also Set the submersible pump and the pond water supply water cycle, and in the pipeline to be set up filters and disinfection equipment to remove circulating water debris, algae and germs. In addition, the circulating water used after a period of time, should be regularly replaced, according to the actual situation to determine the water change cycle. Effluent water can be used for sprinkling or sprinkling water on the surrounding green areas. Park artificial lake and other water features, there is a basic body of water does not flow, algae easily reproduce, the water color turns green, deteriorating water quality. Due to the large amount of water, it is difficult to achieve continuous water treatment and water exchange. More common and economical way to use algaecides, commonly used agents are aluminum ferric chloride, copper sulfate and bleach. Dosing can be dosing, according to the species and quantity of algae and other conditions identified. For organisms such as fish in the lake, copper sulfate must be added before spring algae growth and development, otherwise the fish will be killed because a large number of algal dead cells are decomposed by microbes to cause hypoxia in the water and release Endotoxin in algal cells results.