Applicability of drinking water treatment residue for lake restoration in relation to metal/metalloid risk assessment

Yuan, Nannan; Wang, Changhui; Pei, Yuansheng; Jiang, Helong

doi:10.1038/srep38638

Cited by 9 publications

(4 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…First suggested by Young et al (1988), multiple recent studies have expanded on this idea (Wang et al 2012a;Wang et al 2013a;Takashima et al 2015;Yuan et al 2016a). The most common approach is to mix 10% WTRs by weight with lake sediments (Wang et al 2012a;Wang et al 2013a;Yuan et al 2016b); however, some studies have varied this amount, such as Yuan et al (2016a). WTRs have the potential to limit internal P loading within lakes, leading to a reduction in algal growth (Yuan et al 2016a).…”

Section: Use In Lakes or Reservoirsmentioning

confidence: 99%

“…Therefore, the required volume of WTR for P immobilisation can be estimated if the (Al ox + Fe ox ) WTR and P concentration in sediments are known. Yuan et al (2016b) evaluated the risk of pollution related to WTRs in lake water with regard to environmental regulatory limits and human health risk assessment. WTRs were mixed with sediments (~10% WTR by weight) and incubated aerobically and anaerobically in beakers.…”

Section: Use In Lakes or Reservoirsmentioning

confidence: 99%

See 1 more Smart Citation

Potential Alternative Reuse Pathways for Water Treatment Residuals: Remaining Barriers and Questions—a Review

Turner

Wheeler²,

Stone³

et al. 2019

Water Air Soil Pollut

114

View full text Add to dashboard Cite

Water treatment residuals (WTRs) are byproducts of the coagulation and flocculation phase of the drinking water treatment process that is employed in the vast majority of water treatment plants globally. Production of WTRs are liable to increase as clean drinking water becomes a standard resource. One of the largest disposal routes of these WTRs was via landfill, and the related disposal costs are a key driver behind the operational cost of the water treatment process. WTRs have many physical and chemical properties that lend them to potential positive reuse routes. Therefore, a large quantity of literature has been published on alternative reuse strategies. Existing or suggested alternative disposal routes for WTRs can be considered to fall within several categories: use as a pollutant and excess nutrient absorbent in soils and waters, bulk land application to agricultural soils, use in construction materials, and reuse through elemental recovery or as a wastewater coagulant. The main concerns and limitations restricting current and future beneficial uses of WTRs are discussed within. This includes those limitations linked to issues that have received much research attention such as perceived risks of undesirable phosphorous immobilisation and aluminium toxicity in soils, as well as areas that have received little coverage such as implications for terrestrial ecosystems following land application of WTRs.

show abstract

Section: Use In Lakes or Reservoirsmentioning

confidence: 99%

Section: Use In Lakes or Reservoirsmentioning

confidence: 99%

Potential Alternative Reuse Pathways for Water Treatment Residuals: Remaining Barriers and Questions—a Review

Turner

Wheeler²,

Stone³

et al. 2019

Water Air Soil Pollut

114

View full text Add to dashboard Cite

show abstract

“…This study did not address the lability of the metals contained in the DWTRs. Previous research has shown that the most abundant metals Al, Fe, and Mn can be released from DWTR to the water column under anaerobic (reductive) conditions [77]. Chronic and/or high-concentration exposure to fresh sedimentation sludge has been shown to have harmful effects on the Daphnia genus, which is used as an indicator organism [78,79].…”

Section: Considerations For Treatment Of Dwtrmentioning

confidence: 99%

Washing and Heat Treatment of Aluminum-Based Drinking Water Treatment Residuals to Optimize Phosphorus Sorption and Nitrogen Leaching: Considerations for Lake Restoration

Huser

Padungthon

Junggoth

et al. 2021

Water

View full text Add to dashboard Cite

Drinking water treatment residuals (DWTRs) generated during drinking water treatment have been proposed for use in lake restoration as a solid-phase sorbent to inactivate phosphorus (P) in lake sediment. However, treatments that minimize leaching of nitrogen (N) and optimize P sorption capacity may be necessary prior to use. This study assessed seven different treatment methods, including washing and heat treatments at different temperatures and with and without oxygen limitation, among two DWTRs from Thailand. Results showed that oxygen-limited heat treatment at 600 °C substantially reduced N leaching (<0.2 mg/kg TKN) while also improving P sorption capacity (increase of 18–32% compared to untreated DWTR) to a maximum of 45.7 mg P/kg. Washing with deionized water reduced N leaching if a sufficient volume was used but did not improve P sorption. Heating at 200 °C with or without the presence of oxygen did not improve N leaching or P sorption. Regression of P sorption parameters from a two-surface Langmuir isotherm against physio-chemical properties indicated that oxalate-extractable (i.e., amorphous) aluminum and iron were significantly associated with total P sorption capacity (R2 = 0.94), but micropores and oxalate-extractable P modulated the P sorption from high-affinity to low-affinity mechanisms. In conclusion, this study confirmed the importance of amorphous aluminum in DWTRs for inactivating P, and the results suggest that high-temperature treatment under oxygen-limited conditions may be the most reliable way to optimize DWTRs for environmental remediation applications.

show abstract

“…Because DWTR mainly consists of inorganic components [ 2 ], the risks of heavy metal pollution have been investigated widely. The findings have indicated that most of heavy metals in DWTR tend to be at low concentrations and have high stability under natural conditions (e.g., pH 6–9 and various redox conditions) [ 16 , 17 , 18 , 19 ]. The relatively low concentrations of organic pollutants also have been reported in DWTR, although careful management is recommended for DWTR in cyanobacteria bloom-affected areas [ 20 ].…”

Section: Introductionmentioning

confidence: 99%

The Physiological and Biochemical Responses of Daphnia magna to Dewatered Drinking Water Treatment Residue

Yuan

Pei

Bao

et al. 2020

IJERPH

Self Cite

View full text Add to dashboard Cite

There have been widespread attempts to recycle drinking water treatment residue (DWTR) after dewatering for environmental remediation, which is beneficial for both the environment and the economy. The directly discharged DWTR without dewatering to natural water bodies, however, was reported to show signs of chronic toxicity to Daphnia magna (D. magna), a typical zooplankton in the aquatic environment. This study comprehensively assessed the effect of dewatered DWTR on the physiological and biochemical characteristics of D. magna based on acute and chronic toxicity tests. The results showed that the survival, growth, reproduction, body morphology of offspring, and the antioxidant enzymes of D. magna were not affected by the dewatered DWTR. These physiological and biochemical indexes also had no undesirable changes for the DWTR-amended sediments (with ratios of 0–50%) incubated for 10 and 180 d; the growth and reproduction were even promoted when D. magna was exposed to 5000 mg-sediment L−1, which may be due to the extra nutrients supplied by the amended sediments for the animals. The results demonstrated that by contrast with the directly discharged DWTR without dewatering, the dewatered DWTR could be safe to D. magna. Further analysis suggested that heavy metals (Pb, Ni, Cu, Cr, and Zn) with relatively low concentrations and high stability could be the main reasons leading to the high safety of the dewatered DWTR. Overall, dewatered DWTR can be considered a non-hazardous material for zooplankton.

show abstract

Applicability of drinking water treatment residue for lake restoration in relation to metal/metalloid risk assessment

Cited by 9 publications

References 50 publications

Potential Alternative Reuse Pathways for Water Treatment Residuals: Remaining Barriers and Questions—a Review

Potential Alternative Reuse Pathways for Water Treatment Residuals: Remaining Barriers and Questions—a Review

Washing and Heat Treatment of Aluminum-Based Drinking Water Treatment Residuals to Optimize Phosphorus Sorption and Nitrogen Leaching: Considerations for Lake Restoration

The Physiological and Biochemical Responses of Daphnia magna to Dewatered Drinking Water Treatment Residue

Contact Info

Product

Resources

About