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.

A multi-parametric approach assessing microbial viability and organic matter characteristics during managed aquifer recharge

2015 ◽  
Vol 524-525 ◽  
pp. 290-299 ◽  
Author(s):  
Hyun-Chul Kim ◽  
Jin Hyung Noh ◽  
So-Ryong Chae ◽  
Jaewon Choi ◽  
Yunho Lee ◽  
...  
Keyword(s):  
Organic Matter ◽  
Managed Aquifer Recharge ◽  
Parametric Approach ◽  
Aquifer Recharge ◽  
Microbial Viability

scholarly journals Comparative assessment of managed aquifer recharge versus constructed wetlands in managing chemical and microbial risks during wastewater reuse: a review

2013 ◽  
Vol 4 (1) ◽  
pp. 1-8 ◽  
Author(s):  
A. F. Hamadeh ◽  
S. K. Sharma ◽  
G. Amy
Keyword(s):  
Water Quality ◽  
Constructed Wetlands ◽  
Wastewater Reuse ◽  
Cost Effective ◽  
Managed Aquifer Recharge ◽  
Water Recovery ◽  
Aquifer Recharge ◽  
Natural Treatment Systems ◽  
Natural Treatment ◽  
Pre Treatment

Constructed wetlands (CWs) and managed aquifer recharge (MAR) represent commonly used natural treatment systems for reclamation and reuse of wastewater. However, each of these technologies have some limitations with respect to removal of different contaminants. Combining these two technologies into a hybrid CW-MAR system will lead to synergy in terms of both water quality and costs. This promising technology will help in the reduction of bacteria and viruses, trace and heavy metals, organic micropollutants, and nutrients. Use of subsurface flow CWs as pre-treatment for MAR has multiple benefits: (i) it creates a barrier for different microbial and chemical pollutants, (ii) it reduces the residence time for water recovery, and (iii) it avoids clogging during MAR as CWs can remove suspended solids and enhance the reclaimed water quality. This paper analyzes the removal of different contaminants by CW and MAR systems based on a literature review. It is expected that a combination of these natural treatment systems (CWs and MAR) could become an attractive, efficient and cost-effective technology for water reclamation and reuse.

scholarly journals Water quality changes during the first meter of managed aquifer recharge

2021 ◽  
Author(s):  
Kristofer Hägg ◽  
Jing Li ◽  
Masoumeh Heibati ◽  
Kathleen R. Murphy ◽  
Catherine J. Paul ◽  
...  
Keyword(s):  
Water Quality ◽  
Unsaturated Zone ◽  
Sampling Method ◽  
Managed Aquifer Recharge ◽  
Quality Changes ◽  
Aquifer Recharge ◽  
Basin Management ◽  
Infiltration Basin ◽  
Direct Sampling ◽  
High Treatment

The direct sampling method revealed the high treatment capacity of the unsaturated zone and the significant impact of infiltration basin management on microbial communities in managed aquifer recharge (MAR).

scholarly journals Allochthonous sources of iodine and organic carbon in an eastern Ontario aquifer

2019 ◽  
Vol 56 (3) ◽  
pp. 209-222 ◽  
Author(s):  
Alexander J. Lemieux ◽  
Stewart M. Hamilton ◽  
Ian D. Clark
Keyword(s):  
Organic Matter ◽  
Organic Carbon ◽  
Principal Component ◽  
Marine Phytoplankton ◽  
Pore Waters ◽  
Microbial Oxidation ◽  
Glacial Sediments ◽  
Decomposition Of Organic Matter ◽  
Eastern Ontario ◽  
Bedrock Aquifer

Regional geochemical characterization of groundwaters in a bedrock aquifer in the Ottawa – St. Lawrence Lowlands of eastern Ontario has identified an iodine (I) anomaly, with values regularly exceeding 150 μg/L and a maximum observed concentration of 10 812 μg/L. The spatial distribution, enrichment mechanisms, and sources of I and organic matter were investigated using geochemical and isotopic data. High-I groundwaters (>150 μg/L) are prevalent in Na–Cl-type groundwaters at low bedrock elevations in areas overlain by thick layers of glacial sediments. I is thought to be linked to massive muds in the glacial sediments overlying the aquifer, deposited during the postglacial incursion of the Champlain Sea 12–10 ka BP. Principal component analysis of I and 18 other chemical parameters revealed correlations among I, salinity, and indicators of microbial oxidation of organic matter, suggesting that the intrusion of saline pore waters affected by decomposition of organic matter such as marine phytoplankton in the massive muds is the dominant process controlling I enrichment in groundwater. 129I/127I ratios in the pre-modern waters vary between near-marine values of 460 × 10−14 and 5 × 10−14, demonstrating that older allochthonous I derived from the surrounding Paleozoic sedimentary terrain also contributed to the I pool in the Champlain Sea basin. 14C ages and δ13C signatures for dissolved organic carbon in groundwater and disseminated organic carbon within the glaciomarine muds highlight an allochthonous source of terrestrial organic carbon predating the Champlain Sea incursion, likely transported via glacial meltwaters in tandem with I to the Champlain Sea basin.

Influence of algal organic matter on the attenuation of selected trace organic contaminants and dissolved organic matter in managed aquifer recharge: column studies

2020 ◽  
Vol 6 (10) ◽  
pp. 2789-2799
Author(s):  
Jin Hyung Noh ◽  
Soo Hyun So ◽  
Ji Won Park ◽  
Sung Kyu Maeng
Keyword(s):  
Organic Matter ◽  
Dissolved Organic Matter ◽  
Organic Contaminants ◽  
Managed Aquifer Recharge ◽  
Aquifer Recharge ◽  
Soil Columns ◽  
Column Studies ◽  
Trace Organic Contaminants ◽  
Algal Organic Matter ◽  
Trace Organic

In this study, the effects of algal organic matter (AOM) from Microcystis aeruginosa on the attenuation of selected trace organic contaminants (TrOCs) were observed in managed aquifer recharge using laboratory scale soil columns.

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