Compare the economic benefits of polyaluminum chloride and polyaluminum chloride in the treatment of papermaking wastewater II. Compare the economic benefits of polyaluminum chloride and polyaluminum chloride in the treatment of papermaking wastewater II Polyaluminum chloride (PAC) and Comparison of PFC coagulant treatment of the same water sample From the previous experiment, it was found that under the best conditions (pH and coagulant dosage are the same), the polymerization chlorination Aluminum and iron PFC papermaking wastewater coagulation treatment of color and CODCr removal rate are higher than polyaluminum chloride PAC. Test two coagulants offer: PAC coagulant is 1080 yuan / t; PFC coagulant is 1050 yuan / t, and the best coagulation treatment the same dosage, so the choice of PFC more economical. The primary conditions affecting the coagulation and deposition of papermaking wastewater are pH value, coagulant variety and coagulant dosage. When the pH value is 8 and the dosage is 6mL (30mg / L), the decolorization rate of papermaking wastewater can reach 90% and the removal rate of CODCr can reach 43% Polyaluminum chloride (PAC) coagulant treatment of papermaking wastewater, adjusting the pH value of 8, the dosage of 6mL (ie 30mg / L), the wastewater decolorization rate of up to 78%, CODCr removal rate of up to 37%. Regardless of whether it is economically viable, PFC coagulants are preferred over PACs. This filter source water is original, for reprint, please indicate the source URL: http://www.gyzhenyu.com