Optimization of struvite precipitation process on a mmonium and phosphorus recovery from rubber wastewater
Keywords:
A mmonium recovery, Struvite precipitation, Rubber wastewaterAbstract
A mmonium and phosphorus are abundant in rubber wastewater, affecting the treatment of the wastewater treatment system. This study will conduct experiments to test the influence of various process parameters on A mmonium and phosphorus recovery by struvite formation from rubber wastewater. The results showed that at the pH value of 9.5, the efficiency of a mmonium and phosphorus removal is and 69.4%, respectively. An increase in pH from 10 to 11 did not significantly affect phosphorus removal. The optimal value were determined as: reaction time is 60 minutes, pH is 9,5, mole ratio Mg2+: PPO43-: N-NH4 is 1.3: 1: 1, the efficiency of a mmonium and phosphorus removal is 81,7% and 97%, respectively; The volume of struvite precipitate obtained is 4,2 kg/cubic meter of rubber wastewater.
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