scholarly journals Surface water treatment by UV/H2O2 with subsequent soil aquifer treatment: impact on micropollutants, dissolved organic matter and biological activity

2019 ◽  
Vol 5 (10) ◽  
pp. 1709-1722 ◽  
Author(s):  
Robin Wünsch ◽  
Julia Plattner ◽  
David Cayon ◽  
Fabienne Eugster ◽  
Jens Gebhardt ◽  
...  
Keyword(s):  
Organic Matter ◽  
Biological Activity ◽  
Water Treatment ◽  
Surface Water ◽  
Dissolved Organic Matter ◽  
Microbial Activity ◽  
Soil Aquifer Treatment ◽  
Organic Micropollutants ◽  
Total Removal ◽  
Surface Water Treatment

UV/H2O2 treatment of sand-filtered surface water before soil aquifer treatment increases the total removal of organic micropollutants and has an impact on microbial activity without pronounced effects on dissolved organic matter removal.

Application of composite flocculants for removing organic matter and mitigating ultrafiltration membrane fouling in surface water treatment: the role of composite ratio

2019 ◽  
Vol 5 (12) ◽  
pp. 2242-2250
Author(s):  
Xue Shen ◽  
Baoyu Gao ◽  
Kangying Guo ◽  
Qinyan Yue
Keyword(s):  
Organic Matter ◽  
Water Treatment ◽  
Surface Water ◽  
Membrane Permeability ◽  
Natural Organic Matter ◽  
Membrane Fouling ◽  
Ultrafiltration Membrane ◽  
Surface Water Treatment ◽  
Ultrafiltration Membrane Fouling

Coagulation prior to the ultrafiltration (UF) process was implemented to improve natural organic matter (NOM) removal and membrane permeability.

scholarly journals A feasibility study of disinfection by-product precursor removal from surface water by a membrane bioreactor acclimatized with wastewater organic matter

2018 ◽  
Vol 78 (4) ◽  
pp. 991-998 ◽  
Author(s):  
Stephen M. Long ◽  
Hao L. Tang
Keyword(s):  
Organic Matter ◽  
Water Treatment ◽  
Surface Water ◽  
Retention Time ◽  
Membrane Bioreactor ◽  
Treatment Time ◽  
Hollow Fiber Membrane ◽  
Dichloroacetic Acid ◽  
Surface Water Treatment ◽  
Solids Retention

Abstract A membrane bioreactor (MBR) acclimatized with wastewater organic matter was employed for surface water treatment, and the feasibility of the MBR for the removal of disinfection by-product (DBP) precursors was studied. With a low pressure microfiltration hollow-fiber membrane module, a hydraulic retention time of 1.5 hours and a solids retention time of 180 days, the MBR was able to achieve 35% removal of trichloroacetic acid precursors and 21% removal of dichloroacetic acid precursors. The removal of trichloromethane (TCM) and brominated DBP precursors was unsatisfactory. The TCM yield and bromine substitution factors for trihalomethanes and dihaloacetic acids increased. The phenomena could be attributed to an extended treatment time for hydrophobic dissolved organic matter (DOM), production of soluble microbial products from biomass activities, and an increased Br/DOM ratio by the MBR. Since the MBR treatment would lead to the production of some new DBP precursors and a change of DOM composition, the toxic potency of the DBPs formed needs to be taken into consideration if this process is employed for surface water treatment.

scholarly journals Upgrading coagulation with hollow-fibre nanofiltration for improved organic matter removal during surface water treatment

2016 ◽  
Vol 89 ◽  
pp. 232-240 ◽  
Author(s):  
Stephan J. Köhler ◽  
Elin Lavonen ◽  
Alexander Keucken ◽  
Philippe Schmitt-Kopplin ◽  
Tom Spanjer ◽  
...  
Keyword(s):  
Organic Matter ◽  
Water Treatment ◽  
Surface Water ◽  
Hollow Fibre ◽  
Organic Matter Removal ◽  
Surface Water Treatment
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