Preparation of the new rare-earth coagulant and application research

Using hydrochloric acid and rare earth polymer coagulant mixing heating method, to prepare of a new type of rare earth polymer coagulant polymer coagulant (PRE). Through a single factor and cross experiments to find the best prepare conditions: the concentration of hydrochloric acid 2mol/L, reaction temperature 100°C, the amount of rare earth added 10g, reaction time 6h. Yellow River water for example, and take the rare earth polymer coagulant (PRE) compared with coagulant PFC and PAC which used very often in fact. The results show that:PRE Coagulation better than PFC and PAC in the characteristics of thick flakes structure better settlement performance, produces less sludge, turbidity high removal efficiency.