Title :
Micro Analysis of Efficacy and Mechanism of Aid-Coagulation with Hydrated MnO2
Author :
Li, Haoyu ; Nan, Jun
Author_Institution :
State Key Lab. of Urban Water Resource & Environ., Harbin Inst. of Technol., Harbin, China
Abstract :
The coagulation experiment, with Kaolin and humic acids (nature organics) as objects, aluminum chloride (PAC) as coagulant and hydrated MnO2 as coagulant aid, were accomplished under different conditions. In the experiment, the particle size distribution, turbidity and streaming current (SCD) in water were detected by on-line detector. Then the variation rules of particle size distribution and SCD for the microscopic efficacy and mechanism of aid- coagulation with hydrated MnO2 was analyzed. The results shows that a low dosage of hydrated MnO2 (0.01~0.02 mmol/L) can lead to a good aid-coagulation efficacy after precipitation, reducing total particle counts,
Keywords :
adsorption; coagulation; flocculation; manganese compounds; particle size; turbidity; wastewater treatment; Kaolin acids; MnO2; adsorption bridging action; aid-coagulation mechanism; aluminum chloride; humic acids; particle size distribution; turbidity flocculating constituents; wastewater treatment; Coagulation; Counting circuits; Detectors; Magnetic levitation; Magnetic separation; Manganese; Pumps; Testing; Wastewater treatment; Water; aid-coagulation; coagulation efficacy; hydroted MnO2; particle counting; particle size distribution;
Conference_Titel :
Energy and Environment Technology, 2009. ICEET '09. International Conference on
Conference_Location :
Guilin, Guangxi
Print_ISBN :
978-0-7695-3819-8
DOI :
10.1109/ICEET.2009.389
