Pdmdaac Helps The Coagulation Mechanism Of Pac Dosing Methods Research And Analysis

Based on different water quality conditions, PAC PDMDAAC coagulant feeding modes on the coagulation effect is studied. Through the investigation of different conditions, feeding modes on coagulation aid effect of PAC, to determine the specific conditions of PDMDAAC. By adjusting the turbidity and CODMn oxygen consumption, formation of turbidity and CODMn level of the5different simulation in micro polluted source water, to represent the East China region of typical micro polluted source water. In response to a simulated water samples using different PDM characteristics, viscosity at different mass ratios of9PAC/PDMDAAC composite coagulants are beaker coagulation experiment, to determine its effect on coagulation and the effects of different adding methods2experimental materials. In the compound agent identified by experimental materials under different feeding way, beaker coagulation experiment, according to the results obtained with the compound agent compares the results obtained under different conditions, feeding modes on PAC and PDMDAAC coagulation aid effect of.The results show that:the temperature of18to24DEG C below40-50NTU, turbidity micro-polluted water, PDMDAAC coagulation PAC best results appear in PAC and PDMDAAC while adding; while the turbidity is higher than40-50NTU micro-polluted source water, coagulation aid effect of PDMDAAC PAC best point in adding PAC after adding PDMDAAC time interval15-45S. In addition, the turbidity is higher than40-50micro polluted source water, when CODMn is higher the optimal coagulation effect points PAC and PDMDAAC dosing intervals longer. Regardless of the water quality conditions, also regardless of the dosing method, PAC and PDMDAAC mass ratio is lower, the coagulation effect is better. When the source CODMn is low, PDMDAAC characteristic viscosity for affecting the effect of coagulation is not or is not obvious, but with the water the elevation of CODMn, PDMDAAC characteristic viscosity for the coagulation effect is more and more apparent, as a rule, the higher CODMn PDMDAAC characteristics of water, the higher viscosity, coagulation effect is better.The study of PDMDAAC coagulation PAC application show the process conditions and rules of water development and utilization, PDMDAAC coagulation PAC actual treatment of micro polluted source water has the function of guidance.