<i>Removing Atrazine from agricultural drainage water using woodchips bioreactors; effect of biochar amendment</i>

2017 ◽  
Author(s):  
Bahareh Hassanpour ◽  
Christian David Guzman ◽  
Larry D Geohring ◽  
Tammo S Steenhuis
Keyword(s):  
Drainage Water ◽  
Agricultural Drainage ◽  
Agricultural Drainage Water ◽  
Biochar Amendment

scholarly journals Temperature Sensitivity and Composition of Nitrate-Reducing Microbiomes from a Full-Scale Woodchip Bioreactor Treating Agricultural Drainage Water

2021 ◽  
Vol 9 (6) ◽  
pp. 1331
Author(s):  
Arnaud Jéglot ◽  
Sebastian Reinhold Sørensen ◽  
Kirk M. Schnorr ◽  
Finn Plauborg ◽  
Lars Elsgaard
Keyword(s):  
Temperature Response ◽  
Microbial Transformation ◽  
Drainage Water ◽  
Microbial Populations ◽  
Agricultural Drainage ◽  
Bacterial Populations ◽  
Cold Temperatures ◽  
Cold Adapted ◽  
Agricultural Drainage Water ◽  
Temperature Responses

Denitrifying woodchip bioreactors (WBR), which aim to reduce nitrate (NO3−) pollution from agricultural drainage water, are less efficient when cold temperatures slow down the microbial transformation processes. Conducting bioaugmentation could potentially increase the NO3− removal efficiency during these specific periods. First, it is necessary to investigate denitrifying microbial populations in these facilities and understand their temperature responses. We hypothesized that seasonal changes and subsequent adaptations of microbial populations would allow for enrichment of cold-adapted denitrifying bacterial populations with potential use for bioaugmentation. Woodchip material was sampled from an operating WBR during spring, fall, and winter and used for enrichments of denitrifiers that were characterized by studies of metagenomics and temperature dependence of NO3− depletion. The successful enrichment of psychrotolerant denitrifiers was supported by the differences in temperature response, with the apparent domination of the phylum Proteobacteria and the genus Pseudomonas. The enrichments were found to have different microbiomes’ composition and they mainly differed with native woodchip microbiomes by a lower abundance of the genus Flavobacterium. Overall, the performance and composition of the enriched denitrifying population from the WBR microbiome indicated a potential for efficient NO3− removal at cold temperatures that could be stimulated by the addition of selected cold-adapted denitrifying bacteria.

Hydrology of Wetland Buffer Areas for Pumped Agricultural Drainage Water

1988 ◽  
pp. 260-274 ◽  
Author(s):  
G. M. Chescheir ◽  
R. W. Skaggs ◽  
J. W. Gilliam ◽  
R. G. Broadhead
Keyword(s):  
Drainage Water ◽  
Agricultural Drainage ◽  
Agricultural Drainage Water

scholarly journals New technique for preparing and reusing agricultural drainage water safely in irrigation

2020 ◽  
Vol 20 (3) ◽  
pp. 123-133
Author(s):  
Mohamed A. Ashour ◽  
Tawab E. Aly ◽  
Ahmed E. Hasan
Keyword(s):  
Irrigation Water ◽  
Negative Impact ◽  
National Level ◽  
Drainage Water ◽  
Agricultural Drainage ◽  
Agricultural Water ◽  
Treatment Unit ◽  
Agricultural Drainage Water ◽  
Severe Shortage ◽  
Great Harm

AbstractNot so long ago, due to the great shortage of irrigation water, Egypt on the national level, began to mix (in a certain percentage) raw agricultural drainage water with fresh irrigation water. This mix was for enhancing its quality to be compatible with the proper specifications and standards of irrigation water, for using it safely in the irrigation process, to compensate for the severe shortage of available quantities of irrigation water. In some regions, and local farms, to save their crops farmers were forced to use the drainage water available in the nearby area drains for irrigation due to the problem of insufficient water in the distributary canals. Such use of raw drainage water can cause great harm and has a negative impact on the environment generally, especially on aquatic and agricultural life. Therefore, in this study we aim to introduce an efficient, simple, cheap mobile treatment unit. This new introduced treatment unit can be used locally on farms to solve the problem of insufficient quantities of irrigation water, and also in some cases where the irrigation water, for various reasons, does not reach the ends of some irrigation canals thus causing a serious problem for farmers. The new introduced treatment unit, using some environmentally friendly cheap materials in certain tested quantities and doses, through three designed cylindrical filtration containers connected with each other respectively, succeeded in converting raw contaminated drainage agricultural water into safe water that can be safely and directly used in the irrigation process.

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