wastewater in phosphate production

Phosphate in Wastewater — Water Library Acorn

2020-3-17  Phosphate is abundant in wastewater and should be removed before treated effluent is discharged. There are two main methods for phosphate removal: chemical removal and biological removal. Chemical treatments are generally more common and easier to maintain while biological treatments may produce less sludge and cost less in the long run.1

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Phosphates in Wastewater Products Finishing

2011-1-11  A. The phosphorus occurring in industrial and household wastewater is almost entirely as phosphates. Phosphates are essential for plants and animals, but too much phosphate contributes to eutrophication—fertilization—of our streams, rivers,

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Magnesium Ammonium Phosphate Production from

Magnesium Ammonium Phosphate Production from Wastewater through Box–Behnken Design and Its Effect on Nutrient Element Uptake in Plants This study examined NH ...

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Magnesium Ammonium Phosphate Production from

2013-1-29  A Box–Behnken design revealed that magnesium ammonium phosphate (MAP) produced from potato wastewater included high concentrations of macro‐ and micro‐nutrient elements but low heavy metal content. M...

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Phosphate Recovery from Human Waste via the

2018-2-5  The role of wastewater composition was studied by varying calcium, magnesium, phosphate, and bicarbonate concentrations over the range of values expected in toilet wastewater (i.e., typical values present in human waste diluted approximately 10 times by flushing; Table S1 and Figure S2). The role of buffering capacity was studied by adding borate (0–100 mM) to synthetic wastewater at pH 8.3.

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Phosphine production in anaerobic wastewater

2018-7-1  The reactor was operated in a TC-absence wastewater and 250 μg/L TC-presence wastewater for three months after a start-up period, respectively. The responses of pH, oxidation–reduction potential (ORP), chemical oxygen demand (COD), total phosphorus (TP), enzymes activity (dehydrogenase and acid phosphatase), and microbial community were investigated to reveal

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Nutrient Recovery from Municipal Wastewater for ...

2019-7-10  Similarly, when phosphate production (including mining) and phosphate removal from wastewater are linked, the high energy used in mining, the chemical production spent to precipitate phosphates, and phosphate removal can be offset by the recycling of struvite.

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Phosphorus recovery and reuse from wastewater ...

2021-5-6  The production of elemental P is an energy-intensive process which is strongly dependent on locally-sourced electricity, P i rock, and cheap labor forces. It requires approximately 14 MWh of electricity for each ton of elemental P produced.

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Phosphorus recovery as ferrous phosphate (vivianite)

2018-8-5  Wastewater that contains phosphorus is typically generated by municipal, industrial and agricultural activities.4,5 Taiwan Environmental Protection Agency imposes a standard limit of 1.4 ppm-P for wastewater.6 In Taiwan, the manufacturing of TFT-LCD involves phosphoric acid as an etching reagent and generates large quantities of wastewater that contains high concentrations of phosphate, which varies from hundreds to a thousand ppm-P.7,8 Methods for reclaiming phosphorus

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CALCULATIONS FOR PHOSPHORUS MANAGEMENT IN

2017-1-13  Phosphorus (as phosphate PO 4 3-) is present in domestic wastewater (50% orthophosphate, 40% polyphosphate; 10% organic phosphates) and most passes through treatment systems such as septic tanks and aerated treatment systems (AWTS) in the effluent (discharge) without any significant lowering of the concentration.

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Phosphogypsum/Phosphoric Acid Production

2021-3-9  Also described is the process wastewater that is stated to be potentially generated during some activities when the phosphate ore is processed in sulfuric acid at fertilizer plants. The Petition ...

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Magnesium Ammonium Phosphate Production from

Magnesium Ammonium Phosphate Production from Wastewater through Box–Behnken Design and Its Effect on Nutrient Element Uptake in Plants. Ayla Uysal. Corresponding Author. E-mail address: [email protected]. Department of Environmental Engineering, Suleyman Demirel

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Phosphorus recovery as ferrous phosphate (vivianite)

2018-8-5  Phosphorus recovery as ferrous phosphate (vivianite) from wastewater produced in manufacture of thin film transistor-liquid crystal displays (TFT-LCD) by a fluidized bed crystallizer (FBC)† Ricky Priambodo a, Yu-Jen Shih * b and Yao-Hui Huang * ac a Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan.

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HESS - Global phosphorus recovery from wastewater

Abstract. Phosphorus is a nutrient necessary for the development of crops and is thus commonly applied as fertilizer to sustain agricultural production. It occurs naturally, in indefinite quantities of uncertain quality in phosphate rock formations, but also accumulates in urban and livestock wastewater wherefrom it is often lost as a pollutant.

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Nutrient Recovery from Municipal Wastewater for ...

2019-7-10  Similarly, when phosphate production (including mining) and phosphate removal from wastewater are linked, the high energy used in mining, the chemical production spent to precipitate phosphates, and phosphate removal can be offset by the recycling of struvite. Therefore, when the contributions of ecological services are factored in how society ...

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Enhanced removal of nitrate and phosphate from wastewater ...

2017-8-28  Abstract: To enhance the efficiency of wastewater biotreatment with microalgae, the effects of physical parameters need to be investigated and optimized. In this regard, the individual and interactive effects of temperature, pH and aeration rate on the performance of biological removal of nitrate and phosphate by Chlorella vulgaris were studied by response surface methodology (RSM).

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Frontiers A Review of Phosphorus Removal

2018-2-22  The removal of phosphorus (P) from domestic wastewater is primarily to reduce the potential for eutrophication in receiving waters, and is mandated and common in many countries. However, most P-removal technologies have been developed for use at larger wastewater treatment plants that have economies-of-scale, rigorous monitoring, and in-house operating expertise.

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Simultaneous recovery of phosphate, ammonium and

With the motivation of achieving resource reclamation and its sustainable utilization as fertilizer, a biochar supported Mg(OH) 2 /bentonite composite (PMRB) was prepared using an integrated precipitation-pyrolysis method for the simultaneous capture of phosphate, ammonium and humic acid from wastewater. The results showed that PMRB was composed of Mg(OH) 2 nanoflakes and a porous

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EPA Petitioned to Protect Communities, Environment

2021-2-8  Conservation and public-health groups petitioned the Environmental Protection Agency today to improve federal oversight of the radioactive waste produced by phosphogypsum facilities, including wastewater from phosphoric acid production. Phosphogypsum and process wastewater from phosphogypsum facilities are currently excluded from certain federal hazardous waste regulations.

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Fertilizer Manufacturing Effluent Guidelines US EPA

2020-4-24  EPA initially promulgated the Fertilizer Manufacturing Effluent Guidelines and Standards (40 CFR Part 418) in 1974 and 1975, and amended the regulation between 1975 and 1987.The regulation covers direct direct dischargerA point source that discharges pollutants to waters of the United States, such as streams, lakes, or oceans. and indirect indirect dischargerA facility that discharges ...

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Original Research Combined Wastewater Treatment from ...

wastewater on a daily basis [1]. The main components most often wastewater from phosphate process include heavy metals such as Cd, Cr, Cu, Ni, Pb, Zn [2] and substances such as detergents or oils [2, 3]. Most of the produced extraneous substances from galvanic production often have teratogenic, mutagenic or

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HESS - Global phosphorus recovery from wastewater

Abstract. Phosphorus is a nutrient necessary for the development of crops and is thus commonly applied as fertilizer to sustain agricultural production. It occurs naturally, in indefinite quantities of uncertain quality in phosphate rock formations, but also accumulates in urban and livestock wastewater wherefrom it is often lost as a pollutant.

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Phosphorus recovery as ferrous phosphate (vivianite)

2018-8-5  Phosphorus recovery as ferrous phosphate (vivianite) from wastewater produced in manufacture of thin film transistor-liquid crystal displays (TFT-LCD) by a fluidized bed crystallizer (FBC)† Ricky Priambodo a, Yu-Jen Shih * b and Yao-Hui Huang * ac a Department of Chemical Engineering, National Cheng Kung University, Tainan 701, Taiwan.

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Do Floridians Know About Phosphate Production’s

The phosphate industry’s groundwater consumption and uses are of primary concern to the Florida Department of Environmental Protection. For example, the state of Florida environmental protection standards requires wastewater from industry be treated to meet water quality standards before the wastewater is released to the environment.

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Enhanced removal of nitrate and phosphate from wastewater ...

2017-8-28  Abstract: To enhance the efficiency of wastewater biotreatment with microalgae, the effects of physical parameters need to be investigated and optimized. In this regard, the individual and interactive effects of temperature, pH and aeration rate on the performance of biological removal of nitrate and phosphate by Chlorella vulgaris were studied by response surface methodology (RSM).

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Energy Efficient Phosphorus Recovery by Microbial ...

2019-4-18  Thermodynamically, calcium phosphate species are less soluble than calcium carbonate, and in the wastewater, the precipitation of calcium phosphate has a higher driving force than calcium carbonate. (11) However, in the wastewater, the Ca/P molar ratio was too high; therefore, there was Ca available for calcium carbonate formation.

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EPA Petitioned to Protect Communities, Environment

2021-2-8  Conservation and public-health groups petitioned the Environmental Protection Agency today to improve federal oversight of the radioactive waste produced by phosphogypsum facilities, including wastewater from phosphoric acid production. Phosphogypsum and process wastewater from phosphogypsum facilities are currently excluded from certain federal hazardous waste regulations.

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Phosphate and Florida: An environmental quagmire •

2021-4-7  Like all phosphate production sites, Piney Point has faced the problem of what to do with the byproducts of the production process. There have been some interesting proposals over the years, such as turning waste into road construction material, or creating artificial reefs out of it, but waste materials have generally been deemed too toxic for ...

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Agro-industrial waste materials and wastewater as

2019-12-2  López-Pacheco I Y, Carrillo-Nieves D, Salinas-Salazar C, Silva-Núñez A, Arévalo-Gallegos A, Barceló D, Afewerki S, Iqbal H N N and Parra-Saldívar R 2019a Combination of nejayote and swine wastewater as a medium for Arthrospira maxima and Chlorella vulgaris production and wastewater treatment Sci. Total Environ. 676 356–67

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Role of microalgae and cyanobacteria in wastewater ...

2021-4-3  Emergence of pollutants in wastewater, expensive cultivation of microalgae, and difficulties in industrial scale production are the main challenges for successful coupling of microalgae with wastewater. Nitrogen, carbon, and phosphorus in wastewater are deliberately consumed by microalgae and cyanobacteria for their growth and could act as green technology for wastewater treatment.

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