Evaluation of atrazine removal processes in a wetland

2001 ◽  
Vol 44 (11-12) ◽  
pp. 539-544 ◽  
Author(s):  
C.M. Kao ◽  
J.Y. Wang ◽  
M.J. Wu
Keyword(s):  
Water Quality ◽  
Surface Water Quality ◽  
Water Quality Monitoring ◽  
Agricultural Lands ◽  
Laboratory Microcosm ◽  
Single Category ◽  
Removal Processes ◽  
Water Quality Deterioration ◽  
Primary Substrate

Agricultural non-point source (NPS) pollution is considered to be the largest single category resulting in water quality deterioration. Pesticide is one of the main detrimental agricultural NPS constituents causing the impairment of water bodies. In this study, a mountainous wetland located in McDowell County, North Carolina, was selected to demonstrate the effects of the natural wetland system on the removal of NPS pesticide (atrazine) pollution to maintain the surface water quality. The selected wetland receives water from two unnamed creeks, which drain primarily agricultural lands. The hydraulic retention time (HRT) for the wetland was approximately 10.5 days based on the results from a dye release study. Water quality monitoring of the wetland was conducted from March to October 1998. One major storm and baseline water quality samples were analyzed. Analytical results indicate that the wetland completely removed NPS atrazine flushed from the upgradient agricultural lands. Laboratory microcosm experiments were conducted to evaluate the feasibility of using the wetland sediments as the microbial sources to enhance the atrazine biodegradation. Microcosm results suggest that atrazine can be degraded under anaerobic or reductive dechlorinating conditions when sucrose was provided as the primary substrate. Atrazine can also serve as the nitrogen source for the growth of microorganisms under anaerobic conditions. Results from this study can provide us with further knowledge on evaluating the role of wetlands in controlling pesticide pollutants from stormwater runoff.

Non-point source pesticide removal by a mountainous wetland

2002 ◽  
Vol 46 (6-7) ◽  
pp. 199-206 ◽  
Author(s):  
C.M. Kao ◽  
J.Y. Wang ◽  
K.F. Chen ◽  
H.Y. Lee ◽  
M.J. Wu
Keyword(s):  
Water Quality ◽  
Point Source ◽  
Surface Water Quality ◽  
Storm Events ◽  
Agricultural Lands ◽  
Pesticide Removal ◽  
Nps Pollution ◽  
Natural Wetlands ◽  
Wetland System ◽  
Water Quality Deterioration

Non-point source (NPS) pollution is believed to be one of the major causes of impairment of water bodies. Among NPS pollution, agricultural NPS pollution is considered to be the largest single category resulting in water quality deterioration. Pesticides are some the most ubiquitous of these agricultural NPS pollutants. In this study, a mountainous wetland was selected to investigate the effects of the natural wetland system on the NPS pesticide (atrazine) removal to maintain the surface water quality. The selected wetland receives water from two unnamed creeks, which drain primarily upgradient agricultural lands. Wetland investigation and monitoring were conducted from November 1999 to March 2001. Major storm events and baseline water quality samples were analyzed. Field results indicate that the wetland was able to remove NPS atrazine flushed from the upgradient agricultural lands after the occurrence of storm events. Laboratory aerobic and anaerobic bioreactor experiments were conducted to evaluate the biodegradation of atrazine under the intrinsic conditions of the wetland system. Microbial enumeration was conducted for a quick screen of bacterial activity in the studied wetland. Results from the study suggest that the methanogenesis process was possibly the dominant biodegradation pattern, and atrazine can be degraded under reductive dechlorinating conditions when sufficient intrinsic organic matter was provided. Results from this study can provide us with further knowledge on pesticide removal mechanisms in natural wetlands and evaluate the role of wetlands in controlling pesticide pollutants from stormwater runoff.

scholarly journals Innovative Solutions in Surface Water Quality Monitoring

2014 ◽  
Vol 10 ◽  
pp. 26-30 ◽  
Author(s):  
Damian Absalon ◽  
Marek Ruman ◽  
Magdalena Matysik ◽  
Krystyna Kozioł ◽  
Żaneta Polkowska
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Surface Water Quality ◽  
Water Quality Monitoring ◽  
Quality Monitoring ◽  
Innovative Solutions

Effects of Fe addition on sediment P dynamics in a eutrophic lake

2021 ◽  
Author(s):  
Melanie Münch ◽  
Rianne van Kaam ◽  
Karel As ◽  
Stefan Peiffer ◽  
Gerard ter Heerdt ◽  
...  
Keyword(s):  
Water Quality ◽  
Organic Matter ◽  
Surface Water ◽  
Water Column ◽  
Sediment Cores ◽  
Surface Water Quality ◽  
Water Interface ◽  
Eutrophic Lakes ◽  
Fe Addition

<p>The decline of surface water quality due to excess phosphorus (P) input is a global problem of increasing urgency. Finding sustainable measures to restore the surface water quality of eutrophic lakes with respect to P, other than by decreasing P inputs, remains a challenge. The addition of iron (Fe) salts has been shown to be effective in removing dissolved phosphate from the water column of eutrophic lakes. However, the resulting changes in biogeochemical processes in sediments as well as the long-term effects of Fe additions on P dynamics in both sediments and the water column are not well understood.</p><p>In this study, we assess the impact of past Fe additions on the sediment P biogeochemistry of Lake Terra Nova, a well-mixed shallow peat lake in the Netherlands. The Fe-treatment in 2010 efficiently reduced P release from the sediments to the surface waters for 6 years. Since then, the internal sediment P source in the lake has been increasing again with a growing trend over the years.</p><p>In 2020, we sampled sediments at three locations in Terra Nova, of which one received two times more Fe during treatment than the other two. Sediment cores from all sites were sectioned under oxygen-free conditions. Both the porewaters and sediments were analysed for their chemical composition, with sequential extractions providing insight into the sediment forms of P and Fe. Additional sediment cores were incubated under oxic and anoxic conditions and the respective fluxes of P and Fe across the sediment water interface were measured.</p><p>The results suggest that Fe and P dynamics in the lake sediments are strongly coupled. We also find that the P dynamics are sensitive to the amount of Fe supplied, even though enhanced burial of P in the sediment was not detected. The results of the sequential extraction procedure for P, which distinguishes P associated with humic acids and Fe oxides, as well as reduced flux of Fe(II) across the sediment water interface in the anoxic incubations, suggest a major role of organic matter in the interaction of Fe and P in these sediments.</p><p>Further research will include investigations of the role of organic matter and sulphur in determining the success of Fe-treatment in sequestering P in lake sediments. Based on these data in combination with reactive transport modelling we aim to constrain conditions for successful lake restoration through Fe addition.</p>

scholarly journals Monitoring surface water quality using social media in the context of citizen science

2017 ◽  
Vol 21 (2) ◽  
pp. 949-961 ◽  
Author(s):  
Hang Zheng ◽  
Yang Hong ◽  
Di Long ◽  
Hua Jing
Keyword(s):  
Water Quality ◽  
Social Media ◽  
Surface Water ◽  
Surface Water Quality ◽  
Water Quality Monitoring ◽  
Quality Monitoring ◽  
Quality Data ◽  
Future Research ◽  
Water Quality Data ◽  
Essential Information

Abstract. Surface water quality monitoring (SWQM) provides essential information for water environmental protection. However, SWQM is costly and limited in terms of equipment and sites. The global popularity of social media and intelligent mobile devices with GPS and photography functions allows citizens to monitor surface water quality. This study aims to propose a method for SWQM using social media platforms. Specifically, a WeChat-based application platform is built to collect water quality reports from volunteers, which have been proven valuable for water quality monitoring. The methods for data screening and volunteer recruitment are discussed based on the collected reports. The proposed methods provide a framework for collecting water quality data from citizens and offer a primary foundation for big data analysis in future research.

The role of institutional and legal constraints on river water quality monitoring in Ukraine

2014 ◽  
Vol 72 (12) ◽  
pp. 4745-4756 ◽  
Author(s):  
Nina Hagemann ◽  
Bernd Klauer ◽  
Ruby M. Moynihan ◽  
Marco Leidel ◽  
Nicole Scheifhacken
Keyword(s):  
Water Quality ◽  
River Water ◽  
Water Quality Monitoring ◽  
River Water Quality ◽  
Quality Monitoring ◽  
Legal Constraints

scholarly journals Evaluation of the River-Shallow Aquifer Exchange Process Effect on Surface Water Quality Deterioration

2017 ◽  
Vol 05 (06) ◽  
pp. 121-132
Author(s):  
Ismail Karaoui ◽  
Abdelkrim Arioua ◽  
Abdelkhalek El Amrani Idrissi ◽  
Wafae Nouaim ◽  
Driss Elhamdouni ◽  
...  
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Exchange Process ◽  
Surface Water Quality ◽  
Shallow Aquifer ◽  
Quality Deterioration ◽  
Water Quality Deterioration

scholarly journals Application of multivariate statistical techniques in the water quality assessment of Danube river, Serbia

2015 ◽  
Vol 41 (4) ◽  
pp. 96-103 ◽  
Author(s):  
Danijela Voza ◽  
Milovan Vukovic ◽  
Ljiljana Takic ◽  
Djordje Nikolic ◽  
Ivana Mladenovic-Ranisavljevic
Keyword(s):  
Water Quality ◽  
Water Quality Management ◽  
Surface Water Quality ◽  
Principal Component ◽  
Water Quality Assessment ◽  
Water Quality Monitoring ◽  
Danube River ◽  
Multivariate Techniques ◽  
Data Set ◽  
Political Issue

AbstractThe aim of this article is to evaluate the quality of the Danube River in its course through Serbia as well as to demonstrate the possibilities for using three statistical methods: Principal Component Analysis (PCA), Factor Analysis (FA) and Cluster Analysis (CA) in the surface water quality management. Given that the Danube is an important trans-boundary river, thorough water quality monitoring by sampling at different distances during shorter and longer periods of time is not only ecological, but also a political issue. Monitoring was carried out at monthly intervals from January to December 2011, at 17 sampling sites. The obtained data set was treated by multivariate techniques in order, firstly, to identify the similarities and differences between sampling periods and locations, secondly, to recognize variables that affect the temporal and spatial water quality changes and thirdly, to present the anthropogenic impact on water quality parameters.

Surface Water Quality in Onshore E&P Activities in State of Espi´rito Santo, Brazil

2002 ◽  
Author(s):  
Glauco F. Fontanelli
Keyword(s):  
Water Quality ◽  
Raw Materials ◽  
Surface Water Quality ◽  
Water Quality Monitoring ◽  
Petroleum Exploration ◽  
Economic Activities ◽  
Near Surface ◽  
X Ray ◽  
Plain Area ◽  
Exploration And Production

This paper analyses which parameters may be in fact contributing for changing in water quality in Suruaca coastal lowland region, north of Espirito Santo, Brazil (Fig. 1). It is a low and plain area, with freatic level near surface, highly deforested, where there is a dominance of activities such as petroleum exploration and production, extensive cattle breeding and plantations of eucalyptus trees. Water quality monitoring surveys that have been carried out comprise 27 parameters at total, and some anomalies have been reported. From bibliographic search and interview with people who know the area, main economic activities in the region are defined, as well as raw materials utilized by them. Raw materials are analised by means of leaching, solubility, X-ray diffraction and X-ray fluorescence. Thus, it is tried to find links between parameters with anomalous concentrations and economic activities. Besides human sources, there are natural sources that are also contributing for changing the water quality of the region, but they are only mentioned in this paper. This paper shows that not all parameters analised need a continuity of monitoring, since both the characteristics of the economic activities placed in the studied area and the monitoring results give this away. On the other hand, there are other parameters that demand deeper researches, since they occur at concentrations higher than expected. For these latter parameters are related, as possible, the activities more likely of being contributing for its presence with concentrations above the allowable level. It is not possible to evaluate the origin of the anomalous concentrations for barium, lead and mercury.

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