Download or read book Drinking Water Treatment Residuals for Removal of Phosphorus in Agricultural Runoff written by Beth Kondro and published by . This book was released on 2024 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Excess nutrient loading to the Great Lakes Basin from agricultural runoff has negatively impacted water quality, resulting in harmful algal blooms. Best management practices, including constructed wetlands and sedimentation basins, can be used to reduce phosphorus losses from agricultural fields. Constructed wetlands are efficient in the removal of particulate phosphorus; however, removal of dissolved phosphorus is limited and requires further treatment to improve surface water quality. Several types of filter media (composed of Ca, Fe, and/or Al) can be used to further reduce the amount of dissolved phosphorus that enters surface water, and a media consisting of low-cost waste residual would be beneficial to adoption. Drinking water treatment residuals (DWTR) that often contain Al could be reused as an adsorbent for dissolved phosphorus. We evaluated the use of modified drinking water treatment residuals for removing dissolved phosphorus from wastewater. DWTR were mixed with binders, made into pellets to create an insoluble media with mechanical strength, and pyrolyzed to create a reactive media pellet. Pellets were evaluated using flow through columns and included experiments to determine the impact of pH (i.e. 6, 8, and 10), retention time (i.e. 1, 5, and 10 min), and field-collected agricultural runoff on dissolved P removal. Cement was found to be the best binding material to create an insoluble pellet with mechanical strength. The P removal capacity of the pellet consisting of the cement binder (1,397 mg P/kg) was within the range of previously evaluated steel slag (120-10,210 mg P/kg), a common reactive media for P removal. The addition of drinking water treatment residual and metals decreased the P removal capacity of the cement binder at pH 6-1 min retention at exhaustion. Increasing retention time increased the P removal capacity of the filter media tested. Wastewater pH has a minimal impact on the P removal capacity of all media except the pyrolyzed DWTR + cement binder media. Evaluated media was negatively impacted by real agricultural runoff with a measured decrease in P removal capacity (43-146 mg/kg decrease) compared to P-spiked distilled water at the same retention time. The pyrolyzed cement pellet was the most cost-effective reactive media, due to an increased P removal capacity. Pyrolyzed DWTR + cement binder would be more costly than the pyrolyzed cement binder alone but could provide a solution for the disposal of DWTR.

Download or read book Pelletized Drinking Water Treatment Residuals for the Removal of Arsenic and Phosphate from Water written by Roberta Hofman-Caris and published by . This book was released on 2018 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Multiscale Assessment of Drinking Water Treatment Residuals as a Phosphorus Sorbing Amendment in Stormwater Bioretention Systems written by Michael Rick Ament and published by . This book was released on 2021 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: Bioretention systems can reduce stormwater runoff volumes and filter pollutants. However, bioretention soil media can have limited capacity to retain phosphorus (P), and can even be a P source, necessitating P-sorbing amendments. Drinking water treatment residuals (DWTRs) have promise as a bioretention media amendment due to their high P sorption capacity. This research explores the potential for DWTRs to mitigate urban P loads using a combination of lab experiments, field trials, and an urban watershed model. In the laboratory portion of this research, I investigated possible tradeoffs between P retention and hydraulic conductivity in DWTRs to inform bioretention media designs. Batch isotherm and flow-through column studies demonstrated that DWTRs have high but variable P sorption capacities, which correlated inversely with hydraulic conductivity. Large column studies showed that when applied as a solid layer within bioretention media, DWTRs can restrict water flow and exhibit only partial P removal. However, mixed layers of sand and DWTRs were shown to alleviate flow restrictions and exhibit complete P removal. These results suggest that mixing DWTRs with sand is an effective strategy for achieving stormwater drainage and P removal goals. In the field portion of this research, I assessed the capacity of a DWTR-amended media to remove different chemical species of P from stormwater in roadside bioretention systems. I also explored whether DWTRs affect system hydraulics or leach heavy metals in the field. Significant reductions in dissolved P and total P concentrations and loads were observed in both the Control and DWTR media. However, the removal efficiency percentages (RE) of the DWTR cells were greater than those of the Control cells for all P species, and this difference increased substantially from the first to the second monitoring season. Furthermore, the DWTR used in this study was not shown to affect bioretention system hydraulics or to significantly leach heavy metals. These results indicate that DWTRs have potential to improve P retention without causing unintended consequences. In the third phase of this research, I used the EPA - Storm Water Management Model (SWMM) to assess the impacts of different bioretention P removal performances and infiltration capacities on catchment-scale P loads, runoff volumes, and peak flow rates. Model outputs, which measured the cumulative effects of widespread bioretention use, showed that both P removal performance and infiltration capacity (i.e., presence or absence of an impermeable liner) have major impacts on watershed P loads. Infiltrating bioretention systems showed the capacity to reduce urban P loads and stormwater volumes, even with media that exhibited low P removal. Notably, P-sorbing amendments can be a limited resource and infiltration is not feasible in all locations. These results therefore suggest that water quantity and quality goals can be effectively achieved through a mixture of infiltrating bioretention and strategic use of P-sorbing amendments. Together, this research shows that DWTRs have significant potential to improve P removal within bioretention systems, but that fine-scale processes (e.g., P sorption capacity, hydraulic conductivity) must inform media designs if bioretention systems are to effectively reduce catchment-scale P loads and eutrophication risks.

Download or read book Phosphorus Polluter and Resource of the Future written by Christian Schaum and published by IWA Publishing. This book was released on 2018-03-15 with total page 592 pages. Available in PDF, EPUB and Kindle. Book excerpt: This comprehensive book provides an up-to-date and international approach that addresses the Motivations, Technologies and Assessment of the Elimination and Recovery of Phosphorus from Wastewater. This book is part of the Integrated Environmental Technology Series.

Download or read book Effect of Water Treatment Residuals on Growth and Phosphorus Removal by Plants Adapted for Vegetative Buffers in the Mid Atlantic United States written by Robert A. Eaton and published by . This book was released on 2002 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comprehensive Management of Phosphorus Water Pollution written by Donald B. Porcella and published by . This book was released on 1974 with total page 436 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Water Residuals to Reduce Soil Phosphorous written by James DeWolfe and published by American Water Works Association. This book was released on 2006 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: A report on the collaborative project of three water utilities (Pennsylvania American Water Company , Tulsa Metropolitan Utility Authority, and Denver Water) looking at managing water treatment residuals (WTRs) generated by drinking water treatment facilities. The goal is to exploit the unique characteristics of WTR for beneficial use, specifically to improve phosphorus management of agricultural lands by controlling the release of phosphorus.

Download or read book Process Design Manual for Phosphorus Removal written by Shimek, Roming, Jacobs, and Finklea (Firm) and published by . This book was released on 1976 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Water Treatment Residuals Effects on Phosphorus in Soils Amended with Dairy Manure written by Collin Thomas Lane and published by . This book was released on 2002 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ultimate Disposal of Phosphate from Waste Water by Recovery as Fertilizer written by W.R. Grace & Co. Dearborn Chemical Division and published by . This book was released on 1970 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Phosphorus Removal written by and published by . This book was released on 1973 with total page 766 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Agricultural Use of Phosphorus Amended Water Treatment Residual and written by James Earl Hyde and published by . This book was released on 1999 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Process Design Manual for Phosphorus Removal written by United States. Environmental Protection Agency. Office of Technology Transfer and published by . This book was released on 1976 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Evaluation of Water Treatment Residuals Application to Excessively Manured High Soil test Phosphorus STP Soils written by Teuku Alvisyahrin and published by . This book was released on 2004 with total page 492 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Economic and Environmental Impact of Phosphorus Removal from Wastewater in the European Community written by Gary K. Morse and published by . This book was released on 1993 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Calcium Phosphate Precipitation in Wastewater Treatment written by Arnold B. Menar and published by . This book was released on 1972 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Long term Stability of Sorbed Phosphorus by Drinking water Treatment Residuals written by Konstantinos Christos Makris and published by . This book was released on 2004 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: ABSTRACT: Drinking-water treatment residuals (WTRs) are amorphous metal hydroxides with significant phosphorus (P) retention capacities, and offer significant potential to cost-effectively control soluble P losses in P-impacted sandy soils. The long-term stability of WTR-immobilized P, however, is unknown and is of major concern to regulatory agencies. We studied the sorption/desorption capacities, kinetics, and mechanisms involved in the reaction of P with three Fe-based and four Al-based WTRs.