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PAC and polymeric ferric sulfate dealing with the study of the effect of water

Author: LuZhi
Tutor: QiuShuYi；HuQiLe
School: Guizhou University
Course: Biological Engineering
Keywords: Poly Ferric Sulfate PAC In addition to the rate of turbidity Sterilization rate Intermittent dosing
CLC: X703
Type: Master's thesis
Year: 2009
Downloads: 61
Quote: 0
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Abstract


Disinfectants can not always guarantee reliable water disinfection , flocculation and sedimentation has become an important method supplemental disinfection . Flocculation and sedimentation can not kill pathogenic microorganisms in the water , but it can water most of the pathogenic microorganisms flocculation , along with a variety of suspended solids settle down, then in water disinfection , disinfection effect will obviously get a raise . PAC and polymeric ferric sulfate is used flocculants in the water treatment plant , the paper these two flocculants . Sewage water samples, the experimental formulated with diatomaceous earth to the water sample added bacterial culture with contaminated water , processing water samples using PAC and polymeric ferric sulfate flocculants in different values ??and different turbidity experiments conditions. Comparison of different experimental conditions, water flocculation and biological indicators . The results show that the dosage of PFS and PAC turbidity removal rate with the best sterilization rate is not equal . When the Fe / Al molar ratio of 1/9 , in addition to the best cloud and a bacteria . When a larger proportion of its optimal dosage also increases . Two flocculants applicable in the 5/5 and 3/7 molar ratio of the widest range of PH is 2.2 to 10.64 , and from 4.6 to 11.0 . Gap-type dosing, more than 2 times to 3 times in a single flocculant dosing and mixing dosing dosing dosing improve the flocculating effect . Biological indicators , multiple dosing little effect. When the ratio of 9:1 , the turbidity removal rate up to 80.9% .

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CLC: > Environmental science, safety science > Processing and comprehensive utilization of waste > General issues > Wastewater treatment and utilization
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