Long-term reclaimed water application effects on phosphorus leaching potential in rapid infiltration basins

2011 ◽  
Vol 13 (9) ◽  
pp. 2457 ◽  
Author(s):  
Daniel R. Moura ◽  
Maria L. Silveira ◽  
George A. O'Connor ◽  
William R. Wise
Keyword(s):  
Reclaimed Water ◽  
Phosphorus Leaching ◽  
Water Application ◽  
Leaching Potential

Examination of moisture content variation within an operational wet deck

TAPPI Journal ◽  
2013 ◽  
Vol 12 (1) ◽  
pp. 45-50 ◽  
Author(s):  
LAURENCE SCHIMLECK ◽  
KIM LOVE-MYERS ◽  
JOE SANDERS ◽  
HEATH RAYBON ◽  
RICHARD DANIELS ◽  
...  
Keyword(s):  
Moisture Content ◽  
Southeastern United States ◽  
Forest Products ◽  
Time Domain Reflectometry ◽  
Water Application ◽  
Wood Moisture ◽  
International Paper ◽  
Content Variation ◽  
Moisture Variation

Many forest products companies in the southeastern United States store large volumes of roundwood under wet storage. Log quality depends on maintaining a high and constant wood moisture content; however, limited knowledge exists regarding moisture variation within individual logs, and within wet decks as a whole, making it impossible to recommend appropriate water application strategies. To better understand moisture variation within a wet deck, time domain reflectometry (TDR) was used to monitor the moisture variation of 30 southern pine logs over an 11-week period for a wet deck at the International Paper McBean woodyard. Three 125 mm long TDR probes were inserted into each log (before the deck was built) at 3, 4.5, and 7.5 m from the butt. The position of each log within the stack was also recorded. Mixed-effects analysis of variance (ANOVA) was used to examine moisture variation over the study period. Moisture content varied within the log, while position within the stack was generally not significant. The performance of the TDR probes was consistent throughout the study, indicating that they would be suitable for long term (e.g., 12 months) monitoring.

scholarly journals Impact of Long-Term Reclaimed Water Irrigation on the Distribution of Potentially Toxic Elements in Soil: An In-Situ Experiment Study in the North China Plain

2019 ◽  
Vol 16 (4) ◽  
pp. 649 ◽  
Author(s):  
Xiaomin Gu ◽  
Yong Xiao ◽  
Shiyang Yin ◽  
Honglu Liu ◽  
Baohui Men ◽  
...  
Keyword(s):  
Toxic Elements ◽  
Reclaimed Water ◽  
Soil Layer ◽  
Shallow Groundwater ◽  
Potentially Toxic Elements ◽  
In Situ Experiment ◽  
The North ◽  
Reclaimed Water Irrigation

The widespread use of reclaimed water has alleviated the water resource crisis worldwide, but long-term use of reclaimed water for irrigation, especially in agricultural countries, might threaten the soil environment and further affect groundwater quality. An in-situ experiment had been carried out in the North China Plain, which aimed to reveal the impact of long-term reclaimed water irrigation on soil properties and distribution of potentially toxic elements (As, Cd, Cr, Hg, Zn and Pb) in the soil profile as well as shallow groundwater. Four land plots were irrigated with different quantity of reclaimed water to represent 0, 13, 22 and 35 years’ irrigation duration. Pollution Load Index (PLI) values of each soil layer were calculated to further assess the pollution status of irrigated soils by potentially toxic elements (PTEs). Results showed that long-term reclaimed water irrigation caused appreciable increase of organic matter content, and might improve the soil quality. High soil organic matter concentrations conduced to high adsorption and retention capacity of the soils toward PTEs, which could reduce the risk of PTEs leaching into deep layers or shallow groundwater. Highest levels of Cr, Pb and Zn were observed at 200–240 cm and 460–500 cm horizons in plots. Longer irrigation time (35 years and 22 years) resulted in a decreasing trend of As, Cd, Hg, Pb and Zn in lower part of soil profiles (>540 cm) compared with that with 13-years’ irrigation years. Long-term reclaimed water irrigation still brought about increases in concentrations of some elements in deep soil layer although their content in soils and shallow groundwater was below the national standard. Totally speaking, proper management for reclaimed water irrigation, such as reduction of irrigation volume and rate of reclaimed water, was still needed when a very long irrigation period was performed.

Corrigendum to “Long-term physiological and agronomic responses of mandarin trees to irrigation with saline reclaimed water” [Agric. Water Manage. 166 (2016) 1–8]

2016 ◽  
Vol 169 ◽  
pp. 193
Author(s):  
E. Nicolás ◽  
J.J. Alarcón ◽  
O. Mounzer ◽  
F. Pedrero ◽  
P.A. Nortes ◽  
...  
Keyword(s):  
Reclaimed Water

Sustainable long-term intensive application of manure to sandy soils without phosphorus leaching: a case study from Ghana

2015 ◽  
Vol 65 (8) ◽  
pp. 747-754
Author(s):  
S.K. Asomaning ◽  
M.K. Abekoe ◽  
G.N.N. Dowuona ◽  
O.K. Borggaard ◽  
J.A. Kristensen ◽  
...  
Keyword(s):  
Sandy Soils ◽  
Phosphorus Leaching

Long-term physiological and agronomic responses of mandarin trees to irrigation with saline reclaimed water

2016 ◽  
Vol 166 ◽  
pp. 1-8 ◽  
Author(s):  
E. Nicolás ◽  
JJ Alarcón ◽  
O. Mounzer ◽  
F. Pedrero ◽  
PA Nortes ◽  
...  
Keyword(s):  
Reclaimed Water

scholarly journals Assessing the Risk of Phthalate Ester (PAE) Contamination in Soils and Crops Irrigated with Treated Sewage Effluent

Water ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 999 ◽  
Author(s):  
Yan Li ◽  
Guanhua Huang ◽  
Hua Gu ◽  
Quanzhong Huang ◽  
Chunhua Lou ◽  
...  
Keyword(s):  
Winter Wheat ◽  
Human Health ◽  
Irrigation Water ◽  
Reclaimed Water ◽  
Soil Samples ◽  
Cereal Grains ◽  
Summer Maize ◽  
Contamination Risk ◽  
Soil Cleanup

Waste/reclaimed irrigation water has been promoted due to water shortages in arid and semi-arid areas. However, this process may be one of the sources of phthalate esters (PAEs) in agricultural soils, and the potential risks of PAEs for soil ecosystems and human health have attracted considerable attention. A two-year (from October 2014 to October 2016) field experiment was conducted to assess the contamination risk of PAEs from reclaimed irrigation water in winter wheat (Triticum aestivum L.) and summer maize (Zea mays L.) fields on the North China Plain. Three types of irrigation water quality were arranged for each variety, including reclaimed water, groundwater, and a mixture of reclaimed water and groundwater (1:1, v/v). The results indicate that the concentrations of the 6 PAEs in topsoil ranged from 2.79 to 5.34 mg/kg at the time of crop harvest. There was no significant effect of reclaimed irrigation water on the concentrations of PAEs in the soil. Di-n-butyl phthalate (DnBP) and di (2-ethylhexyl) phthalate (DEHP) were the most abundant contaminants in all soil samples, accounting for 43.2%~68.7% and 27.1%~48.6%, respectively, of the 6 PAEs. The levels of dimethyl phthalate (DMP) and DnBP in all soil samples exceeded the allowable soil concentrations, but the levels were far below the recommended soil cleanup objectives. The grain yields of winter wheat and summer maize ranged from 4.35 to 7.1 t/ha and 1.03 to 6.46 t/ha, respectively. There were no significant effects of reclaimed water on the growth characteristics and grain yield of winter wheat (p > 0.05); however, the effect of reclaimed irrigation water on summer maize was influenced by climate. The concentrations of the 6 PAEs in wheat grain and maize grain ranged from 1.03 to 4.05 mg/kg and from 0.37 to 3.29 mg/kg, respectively. For the same variety, there was no significant difference in the concentrations of the 6 PAEs in cereal grains among different treatments (p > 0.05). DEHP and DnBP were the most abundant components in most crop samples, accounting for 31.6%~77.9% and 21.1%~64.7%, respectively, of the 6 PAEs. The concentrations of the PAEs, DnBP and DEHP in cereal grains were lower than those in the reference doses. The BCFs of the 6 PAEs and of each PAE in cereal grains were 0.43~1.25 and 0.33~35.75, respectively. The BCFs of butyl benzyl phthalate (BBP) were the highest (1.41~35.75), followed by DMP and DEHP. There were almost no significant differences in the BCFs of each PAE among the three treatments. The total carcinogenic risks of PAEs were 2.82 × 10−5 for adults and 1.81 × 10−5 for children. The total non-carcinogenic risks of PAEs were 3.37 × 10−1 for adults and 7.98 × 10−1 for children. DHEP was the dominant contributor to both risks, and the intake of cereals was the main exposure pathway for the two risks. In conclusion, there were no significant effects of reclaimed irrigation water on the concentrations of PAEs in soil and cereal grains compared with groundwater irrigation, and the human health risks were within the acceptable range. Long-term studies are needed to evaluate the long-term effects of reclaimed irrigation water on the contamination risk posed by PAEs.

scholarly journals Long-term measurements and model simulations of phosphorus leaching from a manured sandy soil

2012 ◽  
Vol 67 (2) ◽  
pp. 101-110 ◽  
Author(s):  
J. Liu ◽  
H. Aronsson ◽  
K. Blomback ◽  
K. Persson ◽  
L. Bergstrom
Keyword(s):  
Sandy Soil ◽  
Phosphorus Leaching ◽  
Model Simulations

scholarly journals Assessment of the viability of using saline reclaimed water in grapefruit in medium to long term

2014 ◽  
Vol 12 (4) ◽  
pp. 1137 ◽  
Author(s):  
Cristina Romero-Trigueros ◽  
Pedro A. Nortes ◽  
Francisco Pedrero ◽  
Oussama Mounzer ◽  
Juan J. Alarcón ◽  
...  
Keyword(s):  
Reclaimed Water

Long-term trends in phosphorus leaching and changes in soil phosphorus with phytomining

2015 ◽  
Vol 70 (2) ◽  
pp. 121-132 ◽  
Author(s):  
A. Svanback ◽  
B. Ulen ◽  
L. Bergstrom ◽  
P. J. A. Kleinman
Keyword(s):  
Soil Phosphorus ◽  
Phosphorus Leaching ◽  
Long Term Trends
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