Aging of aluminum/iron-based drinking water treatment residuals in lake water and their association with phosphorus immobilization capability

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

doi:10.1016/j.jenvman.2015.04.047

Cited by 22 publications

(5 citation statements)

References 54 publications

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“…[70][71][72] The simulation of anoxic conditions by incubation of DWTR or aging in lake sediments shows that most metals and metalloids were stable except for Mn. 73,74 The presence of DWTR can reduce the release of P in lake sediment thus triggering possible eutrophication and suggesting an evaluation of the bioavailable P. 75 The addition of heattreated DWTR was shown effective for the treatment of eutrophic surface water containing high levels of organic matter and nitrogen; 76 the last two parameters can also be controlled by intermittent aeration of DWTR in aquatic environment remediation 77 or repeated washing. 78 Other studies present the benefit of adding a lanthanum (La) salt to DWTR for improving the short-and long-term immobilization of P in water and sediment.…”

Section: Phosphates and Phosphorus Forms Other Nutrients And Natural ...mentioning

confidence: 99%

Re-utilization of drinking water treatment residuals (DWTR): a review focused on the adsorption of inorganic and organic contaminants in wastewater and soil

Belzile,

Chen

2024

Environ. Sci.: Water Res. Technol.

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Section: Phosphates and Phosphorus Forms Other Nutrients And Natural ...mentioning

confidence: 99%

Re-utilization of drinking water treatment residuals (DWTR): a review focused on the adsorption of inorganic and organic contaminants in wastewater and soil

Belzile,

Chen

2024

Environ. Sci.: Water Res. Technol.

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“…The increasing prevalence of potential HABs in lakes and reservoirs across the world has become a significant challenge for both in-lake management and toxin removal (e.g., in drinking water plants). Alum has been shown to bind phosphorus, both in water treatment and when used as an agent to bind legacy phosphorus in water bodies [5].…”

Section: Introductionmentioning

confidence: 99%

Design and Preliminary Testing of an In-Field Passive Treatment System for Removing Phosphorus from Surface Water

Carleton

Glowczewski²,

Cutright

2021

Applied Sciences

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It is well documented that excess phosphorus in source waters is a major contributor to harmful algal bloom formation. While there are many approaches to controlling algal populations in reservoirs, including a variety of phosphorus reduction approaches (e.g., sequestration of legacy phosphorus with alum or clay products), addressing physical phosphorus loading upstream is considered less often. Water treatment residuals (WTR) containing alum, a common waste product of conventional surface water treatment, have been shown to retain the ability to capture phosphorus even after the WTR ‘sludge’ is formed and removed from the sedimentation process. This research designed and tested a refillable, reusable in-stream phosphorus cartridge system which beneficially reutilizes WTR ‘sludge’ to sequester instream phosphorus and remove it from the water when spent media is replaced. This reduces in-stream phosphorus entering into the reservoir without permanently adding additional materials to the waterbody and provides measurable results as to the amount of phosphorus removed. The ten sampling events during the first year’s field assessment indicated that the gates removed a total of 556.31 g of reactive phosphorus (PO43−) and it is anticipated that the actual phosphorous removal was even greater. Other watershed managers can implement the same approach using their own WTR to capture in-stream phosphorus.

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“…Drinking water treatment sludge is characterized by the presence of different trace elements, which remain in the residual effluent after the treatment of drinking water, where a portion of sludge is generated 27 . This consists mostly of alkaline compounds, trace elements, heavy metals, and clay 26,28 . Current DWTS management methods (e.g., disposal in sanitary landfills) causes serious environmental and health problems.…”

Section: Introductionmentioning

confidence: 99%

“…27 This consists mostly of alkaline compounds, trace elements, heavy metals, and clay. 26,28 Current DWTS management methods (e.g., disposal in sanitary landfills) causes serious environmental and health problems. Land and groundwater pollution is the main environmental issue arising from such disposal methods.…”

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confidence: 99%

The use of sludge as a micronutrient for the improvement of biogas production from seaweed: the integration of two sources of environmental concern to bring new opportunities

Rezaei

Ebrahimi-Nik

Tedesco

et al. 2021

Biofuels Bioprod Bioref

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Large quantities of seaweed in marine environments and coastal areas can cause serious hygienic and environmental problems. Anaerobic digestion (AD) could provide a solution and could also be useful for the production of bioenergy and fertilizer. However, the AD of algae biomass has some limitations and further work is required on the process. To increase the efficiency of the process, batches of 350 mL feedstock containing seaweed biomass (Sargassum sp.), inoculum, and different dosages of sludge from drinking water treatment (DWTS) as a micronutrient source to improve biogas production were digested in a 500 mL glass reactor and under mesophilic conditions, leading to significantly enhanced methane production. The highest methane yield (199 NmL g −1 VS) was observed when 6 mg L −1 DWTS was added, which showed a 30% improvement compared with the control digester and accounted for a 249.4 kWh increase in net energy per ton. The biodegradability index also increased by 10% compared with the control after the addition of DWTS.

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Aging of aluminum/iron-based drinking water treatment residuals in lake water and their association with phosphorus immobilization capability

Cited by 22 publications

References 54 publications

Re-utilization of drinking water treatment residuals (DWTR): a review focused on the adsorption of inorganic and organic contaminants in wastewater and soil

Re-utilization of drinking water treatment residuals (DWTR): a review focused on the adsorption of inorganic and organic contaminants in wastewater and soil

Design and Preliminary Testing of an In-Field Passive Treatment System for Removing Phosphorus from Surface Water

The use of sludge as a micronutrient for the improvement of biogas production from seaweed: the integration of two sources of environmental concern to bring new opportunities

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