Abstract
That phosphorus has been removed more from water in purification process can result in higher grade of biological stability of the effluent tap water, especially for the water plant when using surface water source. This study conducted the experiments of phosphorus removal by three coagulants including aluminum chloride, aluminum sulfate and poly aluminum chloride. The results indicated that the poly aluminum chloride is the preferred one that could remove phosphorus up to 80%, followed by aluminum chloride and aluminum sulfate. The lowest proportion of aluminum quality to phosphorus quality is 63 as using poly aluminum chloride, followed by aluminum chloride and aluminum sulfate. It is suggested that the poly aluminum chloride should be the best option to remove phosphorus in water plant.
Highlights
A comprehensive study of the biological stability has been undertaken [1]-[3]
Because nowadays the water source has been polluted seriously for many water plants, of which the microbe would grow in tap water and the biological instability would occur
The PAC was used first time in 1960’s in Japan, and other countries start to produce it in great deal
Summary
A comprehensive study of the biological stability has been undertaken [1]-[3]. It has been demonstrated that the phosphorus is a limiting factor for microorganism growth in tap water [4] [5]. Because nowadays the water source has been polluted seriously for many water plants, of which the microbe would grow in tap water and the biological instability would occur. (2014) Comparison of Three Aluminum Coagulants for Phosphorus Removal. The removal rate for phosphorus by aluminum salt and comparison of three general aluminum salts should be researched. This study is helpful to probe the removal rate of phosphorus in traditional water purification process, and promote to develop new coagulant for larger removal rate of phosphorus
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