Synthesis and characterization of a dewatering reagent: cationic polyacrylamide (P(AM–DMC–DAC)) for activated sludge dewatering treatment

2013 ◽  
Vol 51 (13-15) ◽  
pp. 2791-2801 ◽  
Author(s):  
Junren Zhu ◽  
Huaili Zheng ◽  
Zhenzhen Jiang ◽  
Zhi Zhang ◽  
Liwei Liu ◽  
...  
Keyword(s):  
Activated Sludge ◽  
Synthesis And Characterization ◽  
Sludge Dewatering ◽  
Cationic Polyacrylamide

Enhancement of Waste Activated Sludge Dewaterability by Potassium Ferrate Pretreatment

2014 ◽  
Vol 1073-1076 ◽  
pp. 937-940 ◽  
Author(s):  
Xiao Rong Kang ◽  
Ya Li Liu
Keyword(s):  
Activated Sludge ◽  
Optimal Dose ◽  
Soluble Proteins ◽  
Waste Activated Sludge ◽  
Potassium Ferrate ◽  
Sludge Dewatering ◽  
Cationic Polyacrylamide ◽  
Floc Structure ◽  
Sludge Dewaterability

Potassium ferrate was used to enhance sludge dewatering and the mechanism was studied. Sludge floc structure was effectively destroyed by potassium ferrate, and the soluble COD, proteins and polysaccharides increased with the increase of potassium ferrate. The optimal dose for sludge disintegration was 100 mg/gSS, and the corresponding maximal SCOD, soluble proteins and polysaccharides concentrations were 2455, 800 and 145 mg/L, respectively. Sludge dewaterability was enhanced significantly with cationic polyacrylamide (C-PAM) application, and the SRF decreased to 0.72×1010m/kg from 50.12×1010m/kg. This study indicated that the potassium ferrate pretreatment was helpful for enhancing sludge dewaterability and reducing the coagulant dose.

scholarly journals SYNTHESIS AND CHARACTERIZATION OF CATIONIC POLYACRYLAMIDE AQUEOUS DISPERSION

2013 ◽  
Vol 013 (8) ◽  
pp. 1013-1019 ◽  
Author(s):  
Huang Zhen ◽  
Shu Xin ◽  
Ran Qian-ping ◽  
Liu Jia-ping
Keyword(s):  
Aqueous Dispersion ◽  
Synthesis And Characterization ◽  
Cationic Polyacrylamide
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