phosphorus filter Articles
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The blooming Baltic Sea case study
The Baltic Sea is one of the world’s most polluted seas. This easternmost extension of the Atlantic Ocean suffers from a slow residence time which makes the small and shallow water pool particularly vulnerable to the pollution generated by 14 surrounding countries, including Russia, Scandinavia and the Baltic States. Over the course of centuries, a massive amount of nutrients originating ...
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Removal of phosphorus using suspended reactive filters (SRFs) – efficiency and potential applications
The removal of phosphorus (P) from agricultural runoff is essential to reduce the threat of eutrophication in bodies of water. In this study, an alternative method of applying P reactive materials (RMs) in the form of suspended reactive filters (SRFs) is presented. The SRF method enables P which has already entered a body of water to be caught. In this study, an autoclaved aerated concrete ...
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Active slag filters—simple and sustainable phosphorus removal from wastewater using steel industry byproduct
Active filtration, where effluent is passed through a reactive substrate such as steel slag, offers a simple and cost-effective option for removing phosphorus (P) from effluent. This work summarises a series of studies that focused on the world's only full-scale active slag filter operated through to exhaustion. The filter achieved 75% P-removal during its first 5 years, reaching a retention ...
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Phosphorus sorption capacity of filter materials used for on-site wastewater treatment determined in batch experiments–a comparative study
Received for publication April 25, 2008. Increasing numbers of filter materials have been proposed as suitable media for P removal in on-site wastewater treatment systems. The phosphorus sorption capacity (PSC) of the material can be estimated in batch experiments and is commonly used as the criterion for material selection. However, there is no standard procedure and batch experimental ...
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Introducing the EcoVault-DN
EcoSense International Develops Breakthrough De-Nitrification Technology Early in 2014, in an effort to reduce nitrogen loading to the Indian River Lagoon (IRL), the Brevard County Department of Natural Resources met with the engineers at EcoSense International (ESI) to discuss improvements to Phase 2 of their Micco/Little Hollywood BMP Project. Phase 1 of the project involved installation of a ...
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Biofiltration optimization: phosphorus supplementation effects on disinfection byproduct formation potential
This study investigates the effects of phosphorus supplementation on the formation potential of total trihalomethanes (TTHMfp) and five species of haloacetic acids (HAA5fp) during exposure to clearwell disinfection contact times. In addition, the study investigates the effects of phosphorus supplementation on the dissolved oxygen, organic carbon and nitrogen removal along with biofilm ...
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Full-scale operating experience of deep bed denitrification filter achieving
< 3 mg/l total nitrogen and< 0.18 mg/l total phosphorusThe Arlington County Wastewater Pollution Control Plant (ACWPCP) is located in the southern part of Arlington County, Virginia, USA and discharges to the Potomac River via the Four Mile Run. The ACWPCP was originally constructed in 1937. In 2001, Arlington County, Virginia (USA) committed to expanding their 113,500 m3/d, (300,000 pe) secondary treatment plant to a 151,400 m3/d (400,000 pe) to ...
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Comparing environmental impacts of tertiary wastewater treatment technologies for advanced phosphorus removal and disinfection with life cycle assessment
Different technologies for tertiary wastewater treatment are compared in their environmental impacts with life cycle assessment (LCA). Targeting very low phosphorus concentration (50–120 μg/L) and seasonal disinfection of wastewater treatment plant (WWTP) secondary effluent, this LCA compares high-rate sedimentation, microsieve, dual media filtration (all with UV disinfection), ...
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Continuous phosphorus removal from water by physicochemical method using zero valent iron packed column
Excessive phosphorus in aquatic systems causes algal bloom resulting in eutrophication. To treat wastewater including effluent of wastewater treatment plant containing various amounts of phosphorus, a series of continuous experiments on removal of phosphorus from water were performed by using an electrochemical method. The spherical type of zero valent iron (ZVI) and silica sand were packed at ...
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The ecological filter system for treatment of decentralized wastewater
A vertical flow constructed wetland was combined with a biological aerated filter to develop an ecological filter, and to obtain the optimal operating parameters: The hydraulic loading was 1.55 m3/(m2·d), carbon–nitrogen ratio was 10, and gas–water ratio was 6. The experimental results demonstrated considerable removal efficiency of chemical oxygen demand (COD), ammonia nitrogen (NH4+-N), ...
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Supporting constructed wetlands in P removal efficiency from surface water
The research investigated the implementation of suspended reactive filters to support the phosphorus (P) removal efficiency of constructed wetlands (CWs). The reactive material (RM) used in this study was autoclaved aerated concrete (AAC). The laboratory experiment consists of four plastic boxes filled with the volume of 10 L of artificial P solution with three variants of RM mass to volume ...
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Filter helps city meet phosphorus limits - Case Study
Problem The operators at the Lakes Area Sewer Authority treatment plant in Cass County, Mich., sought an efficient filtration system to meet stringent summer phosphorus limits. The city wanted a high-rate filtration system with a small footprint to fit inside a small building, with low wash water usage, easy cleaning and low maintenance cost. Solution Based on a successful pilot test, the ...
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Upping use of algae in feed may reduce global warming rate
A group of researchers with the International Institute for Applied Systems Analysis (NASA) evaluated potential outcomes for the climate system stemming from the use of microalgae biomass as animal feed and alternative fuel along with carbon capture and sequestration (CCS). "Its critical, if we think about arable land as a scare resource, that we take care of this resource," said lead researcher ...
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