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

Volume

2

fYear

2009

fDate

16-18 Oct. 2009

Firstpage

623

Lastpage

628

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;

fLanguage

English

Publisher

ieee

Conference_Titel

Energy and Environment Technology, 2009. ICEET '09. International Conference on

Conference_Location

Guilin, Guangxi

Print_ISBN

978-0-7695-3819-8

Type

conf

DOI

10.1109/ICEET.2009.389

Filename

5364049