Orthogonal Experimental Study on Coagulation Effect of Polyaluminum Chloride with Different Basicity Levels
The coagulation effect is crucial in the entire production process of tap water,and the control of aluminum in the factory water is increasingly becoming a research focus.In order to guide actual production,orthogonal experiments were used to study the effects of factors such as the total dosage of coagulant,the proportion of iron aluminum coagulant,the basicity of polyaluminum chloride,pH,etc.on the turbidity and residual aluminum of the coagulated effluent during the coagulation test process.The results show that the main and secondary order of factors affecting the residual turbidity index in the iron aluminum mixed test group is total dosage of chemicals＞basicity＞iron aluminum ratio.The main and secondary order of factors affecting the residual aluminum index is basicity＞iron aluminum ratio＞total dosage of chemicals.The main and secondary order of factors affecting the residual turbidity index in the single aluminum operation test group is salinity＞PAC dosage＞pH.The main and secondary order of factors affecting the residual aluminum index is salinity＞pH＞PAC dosage.
basicity levelorthogonal testturbidityaluminum in factory water
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