scholarly journals Fate of bulk organic carbon and bromate during indirect water reuse involving ozone and subsequent aquifer recharge

2015 ◽  
Vol 6 (3) ◽  
pp. 413-420 ◽  
Author(s):  
U. Hübner ◽  
S. Kuhnt ◽  
M. Jekel ◽  
J. E. Drewes
Keyword(s):  
Organic Carbon ◽  
Water Reuse ◽  
Managed Aquifer Recharge ◽  
Small Scale ◽  
Secondary Effluent ◽  
Aerobic Degradation ◽  
Aquifer Recharge ◽  
Column Studies ◽  
The Eu

Long-term column studies with ozonated secondary effluent were conducted to evaluate the removal of dissolved organic carbon (DOC) and to assess formation and stability of the oxidation by-product bromate in combined ozonation and managed aquifer recharge (MAR) systems. DOC removal during simulated MAR was continuously increased from approximately 20 to 40% by pretreatment with ozone indicating the high potential of this combination to remove disinfection by-product (DBP) precursors. This improvement in DOC removal was likely caused by transforming DOC into fractions that are more amenable to biodegradation, as well as the supply of dissolved oxygen favouring aerobic degradation processes. Bromate formation during ozonation of secondary effluent from the Berlin-Ruhleben WWTP exceeded the limit of the EU Drinking Water Directive at a specific ozone consumption of >0.9–1.0 mg O3/mg DOC0. During oxic infiltration, no significant removal of bromate could be observed. Under anoxic conditions, bromate concentration was efficiently reduced. Additional biodegradation tests in small-scale columns indicated a simultaneous consumption of nitrate and bromate as electron acceptors.

Numerical long-term assessment of managed aquifer recharge from a reservoir into a karst aquifer in Jordan

2016 ◽  
Vol 540 ◽  
pp. 603-614 ◽  
Author(s):  
Julian Xanke ◽  
Hervé Jourde ◽  
Tanja Liesch ◽  
Nico Goldscheider
Keyword(s):  
Karst Aquifer ◽  
Managed Aquifer Recharge ◽  
Aquifer Recharge

scholarly journals Hydrogeological evaluation of managed aquifer recharge in a glacial moraine complex using long-term groundwater data analysis

2020 ◽  
Vol 28 (5) ◽  
pp. 1787-1807 ◽  
Author(s):  
Jolijn van Engelenburg ◽  
Martin de Jonge ◽  
Sjoerd Rijpkema ◽  
Erik van Slobbe ◽  
Victor Bense
Keyword(s):  
Data Analysis ◽  
Managed Aquifer Recharge ◽  
Aquifer Recharge

scholarly journals The effect of water pre-treatment with poly-aluminiumchloride on the decomposition of dissolved organic matter in managed aquifer recharge

2020 ◽  
Vol 92 (2) ◽  
pp. 99-110
Author(s):  
Paula Niinikoski-Fußwinkel ◽  
◽  
Lotta Purkamo ◽  
Juha Karhu ◽  
◽  
...  
Keyword(s):  
Organic Matter ◽  
Organic Carbon ◽  
Managed Aquifer Recharge ◽  
Aluminium Chloride ◽  
Purification Process ◽  
Aquifer Recharge ◽  
Surface Water Treatment ◽  
Decomposition Of Organic Matter ◽  
Direct Sampling ◽  
Pre Treatment

This study examines the effect of poly-aluminium chloride (PACl) pre-treatment on the biological purification process taking place during managed aquifer recharge (MAR). PACl treatment is used in waste and surface water treatment to remove organic material. PACl can decrease the organic carbon contents of water significantly. However, aluminium is toxic to microbes, which may be detrimental when the PACl treatment is followed by infiltration into an aquifer (MAR). In this study the effect of pre-treatment with PACl on the water purification process in MAR was examined, by using sediment from a MAR site in four test columns. Two columns were filled with PACl-treated water, and the remaining ones with river water without PACl. The residence time of water in the columns was raised from direct sampling gradually to 64 days. Among the parameters monitored were the pH of the water, microbial activity and the decomposition of dissolved organic carbon (DOC). The results showed active decomposition in all columns. Decomposition of organic matter, and the amount of living/active microbial cells, was marginally higher in the untreated water, which could imply a better functioning MAR system. However, this may also be due to higher DOC starting concentration.

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