Surface water and wastewater treatment using a new tannin-based coagulant. Pilot plant trials

2010 ◽  
Vol 91 (10) ◽  
pp. 2051-2058 ◽  
Author(s):  
J. Sánchez-Martín ◽  
J. Beltrán-Heredia ◽  
C. Solera-Hernández
Keyword(s):  
Wastewater Treatment ◽  
Surface Water ◽  
Pilot Plant ◽  
Water And Wastewater Treatment ◽  
Water And Wastewater ◽  
Plant Trials

Removal of 17β-estradiol (E2) and its chlorination by-products from water and wastewater using non-imprinted polymer (NIP) particles

2011 ◽  
Vol 64 (6) ◽  
pp. 1291-1297 ◽  
Author(s):  
Audrey Murray ◽  
Banu Örmeci ◽  
E. P. C. Lai
Keyword(s):  
Wastewater Treatment ◽  
Humic Acid ◽  
Surface Water ◽  
Emerging Contaminants ◽  
Endocrine Disrupting Compounds ◽  
Imprinted Polymer ◽  
Water And Wastewater Treatment ◽  
17Β Estradiol ◽  
Water And Wastewater ◽  
By Products

Endocrine disrupting compounds and their chlorination by-products are two classes of emerging contaminants. Surface water and wastewater treatment technologies have limitations in removing these contaminants. This study evaluated the ability of non-imprinted polymer particles (NIP) to remove the endocrine disruptor 17β-estradiol (E2) and its chlorination by-products from water and wastewater. NIP effectively removed 98% of 10 mg/L E2 from wastewater. NIP were also effective in removing chlorination by-products of E2 by 84.9% after 10 mg/L E2 in water was chlorinated at 5 mg/L. In the presence of 5 mg/L humic acid, NIP were able to achieve removal of 10 mg/L E2 by greater than 99.9%. Furthermore, after chlorination of 10 mg/L E2 and 5 mg/L humic acid at 10 mg/L chlorine, NIP were also able to remove the chlorination by-products formed as well as the remaining E2 by greater than 99.9%. The presence of 5 mg/L humic acid did not adversely affect the adsorption efficiency. The results of this research indicate that NIPs have good potential as a final treatment step for surface water and wastewater treatment.

Novel Composite Flocculent Ployferric Chloride- Polydimethyldiallylammonium Chloride (PFC-PDMDAAC): Its Characterization and Flocculation efficiency

2006 ◽  
Vol 1 (3) ◽  
Author(s):  
Y. Wang ◽  
B.Y. Gao ◽  
Q.Y Yue ◽  
J.C. Wei ◽  
W.Z. Zhou
Keyword(s):  
Wastewater Treatment ◽  
Surface Water ◽  
Zeta Potential ◽  
Spectroscopy Method ◽  
Water And Wastewater Treatment ◽  
Actual Surface ◽  
Flocculation Efficiency ◽  
Fe Species ◽  
Water And Wastewater ◽  
Wastewater Samples

In this study, a new composite flocculent was prepared from polyferric chloride (PFC) and polydimethyldiallylammonium chloride (PDMDAAC). The Fe( ) species and zeta potential of the composite flocculent (PFC-PDMDAAC) and PFC were measured by a timed complexation spectroscopy method and the malvern Zetasizer 3000, respectively. The flocculation efficiency of PFC-PDMDAAC for treating actual surface water or wastewater samples was compared with that of PFC. The results showed that when PDMDAAC fraction (Wp) is 7.0%, PFC-PDMDAAC contains the smallest content of Fec and has the highest zeta potential. PFC-PDMDAAC is more effective than PFC and PDMDAAC in water and wastewater treatment. Therefore, the use of PFC-PDMDAAC is both technically and economically feasible in water and wastewater treatment.

Chemical Water and Wastewater Treatment VIII

2015 ◽  
Vol 4 (0) ◽  
pp. 9781780402840-9781780402840
Author(s):  
H. Hahn ◽  
E. Hoffman ◽  
H. Odegaard
Keyword(s):  
Wastewater Treatment ◽  
Water And Wastewater Treatment ◽  
Water And Wastewater ◽  
Chemical Water

Water and Wastewater Treatment for a Small Island Resort

1989 ◽  
Vol 21 (2) ◽  
pp. 189-193 ◽  
Author(s):  
B. Rigden
Keyword(s):  
Wastewater Treatment ◽  
Reverse Osmosis ◽  
Small Island ◽  
Rotating Biological Contactor ◽  
Water And Wastewater Treatment ◽  
Water And Wastewater ◽  
Operational Data ◽  
Reverse Osmosis Desalination

The design of a reverse osmosis desalination unit and a rotating biological contactor for water and wastewater treatment for a small island resort is described. Some operational data are presented and recommendations for design flows and loadings are made.

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