Effect of Enteromorpha extract on characteristics of flocs formed by aluminum sulfate in Yellow River water treatment under different hydraulic conditions

2013 ◽  
Vol 215-216 ◽  
pp. 358-365 ◽  
Author(s):  
Shuang Zhao ◽  
Baoyu Gao ◽  
Qinyan Yue ◽  
Yan Wang ◽  
Qian Li ◽  
...  
Keyword(s):  
Water Treatment ◽  
River Water ◽  
Aluminum Sulfate ◽  
Yellow River ◽  
Hydraulic Conditions

Application of Polyaluminum Chloride-Polyacrylamide as New Water Treatment Material for the Removal of Natural Organic Matter

2020 ◽  
Vol 1003 ◽  
pp. 109-114
Author(s):  
Shuang Zhao ◽  
Dan Li ◽  
Wei Hua Yang ◽  
Zhang Jian Zou
Keyword(s):  
Growth Rate ◽  
Organic Matter ◽  
Water Treatment ◽  
Surface Water ◽  
River Water ◽  
Natural Organic Matter ◽  
Yellow River ◽  
Polyaluminum Chloride ◽  
Size Growth ◽  
Positively Charged

Natural organic matter (NOM) is easily soluble in surface water and difficult to be removed thoroughly. In this paper, polyaluminum chloride-polyacrylamide (PAC-PAM), as a new water treatment material, was proposed to solve this problem by coagulation treatment. The performance, mechanism and kinetic process of NOM removal were investigated systematically. Results showed that the optimum dosage of PAC and PAM was 10 mg/L and 0.5 mg/L for NOM removal of Yellow River water. In this condition, NOM could be removed effectively due to positively charged PAM addition. The size, growth rate and recovery factor of flocs generated by PAC-PAM reached 419 μm, 34.9 μm/min and 0.48, respectively, while only 355 μm, 27.9 μm/min and 0.31 were obtained by PAC. Moreover, the adsorption and bridging effect of PAM assisted the formation of multi-branched flocs, which brought fast settle velocity and low turbidity of supernatant after coagulation.

Coagulation effect and floc properties of polyferric silicate sulphate and polyferric sulphate in the Yellow River water treatment

2010 ◽  
Vol 53 (3) ◽  
pp. 664-670 ◽  
Author(s):  
BaiChuan Cao ◽  
BaoYu Gao ◽  
QinYan Yue ◽  
Ying Fu ◽  
ChunHua Xu
Keyword(s):  
Water Treatment ◽  
River Water ◽  
Yellow River ◽  
The Yellow River ◽  
Floc Properties

Effects of pH on coagulation behavior and floc properties in Yellow River water treatment using ferric based coagulants

2010 ◽  
Vol 55 (14) ◽  
pp. 1382-1387 ◽  
Author(s):  
BaiChuan Cao ◽  
BaoYu Gao ◽  
ChunHua Xu ◽  
Ying Fu ◽  
Xin Liu
Keyword(s):  
Water Treatment ◽  
River Water ◽  
Yellow River ◽  
Effects Of Ph ◽  
Floc Properties

Control of the Ozonation by-Products by O3/BAC in Shanxi Yellow River Water Treatment

2015 ◽  
Vol 1119 ◽  
pp. 408-412 ◽  
Author(s):  
Ren Du ◽  
Jian Jun Zhou ◽  
Fu Jin Wang ◽  
Jian Liu ◽  
Xiao Bin Tang ◽  
...  
Keyword(s):  
Water Treatment ◽  
River Water ◽  
Yellow River ◽  
Advanced Treatment ◽  
Raw Water ◽  
Biological Stability ◽  
Biological Activated Carbon ◽  
Operation Parameter ◽  
Water Plant ◽  
By Products

While ozonation and biological activated carbon (O3/BAC) process was widely used in advanced water treatment, the control of ozonation by-product was one of the most important objects in water treatment. In this study, the filtered water of Huyan water plant, treating Yellow River water in Shanxi, was used as the raw water to investigate the control of ozonation by-products and the biological stability by O3/BAC process. Results showed that the bromate, formaldehyde and AOC concentration of ozonation effluent were increased, yet BAC filter could effectively reduce the concentration of the by-products. When ozone dosage was less than 3.5 mg/L, the bromate of BAC filter effluent was lower than 10 ug/L. And the formaldehyde was less than 20 ug/L in the whole range of ozone dosage. Moreover, the optimal ozone dosage for the highest AOC removal of 63.25% was 2.0 mg/L. The results could provide an operation parameter for Shanxi Yellow River water advanced treatment, thus to ensure the water quality safety.

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