Phosphorus recovery from digested sludge centrate using seawater-driven forward osmosis
نویسندگان
چکیده
منابع مشابه
Forward osmosis for concentration of anaerobic digester centrate.
The nutrient-rich liquid stream produced during the dewatering of digested biomass (i.e., the centrate) is commonly mixed with the influent raw wastewater at wastewater treatment facilities. This increases the nitrogen and phosphorus loading on biological processes, increases operating costs, and in some cases, results in increased nutrient concentrations in the final effluent. Forward osmosis ...
متن کاملIncreasing phosphorus recovery from dewatering centrate in microbial electrolysis cells
BACKGROUND Microbial electrolysis cells (MECs) use bioelectrochemical reactions to remove organic contaminants at the bioanode and produce hydrogen gas at the cathode. High local pH conditions near the cathode can also be utilized to produce struvite from nutrient-rich wastewater. This beneficial aspect was investigated using lab-scale MECs fed with dewatering centrate collected at a local wast...
متن کاملAmmonium removal from digested sludge liquors using ion exchange.
Liquors arising from the dewatering of digested sludge typically contain ammonium levels in the range 200-700mgl(-1) NH(4)(+)-N. These liquors are frequently recycled to the head of the wastewater treatment works (WwTW) untreated and can constitute >25% of the total nitrogen load entering the works at inlet. This paper investigates the use of a clay-based material, MesoLite, as an ion exchange ...
متن کاملAmmonia Removal from Digested Sludge Supernatant
Wastewater Treatment Plants that make use of anaerobic processes for sludge digestion often have problems with phosphates and ammonia nitrogen “overloads” returned to biological sewage treatment process together with effluents coming from dewatering of digestion sludge. The high concentrations of phosphates and ammonium nitrogen in supernatant constitute 10 – 20 % of entire load brought to biol...
متن کاملExploring Forward Osmosis Systems for Recovery of Nutrients and Water
Livestock wastewater contains a large amount of nutrients that are available for recovery. In this study, a proof of concept process based on Forward Osmosis (FO) was proposed and investigated for in-situ formation of struvite from digested swine wastewater. This FO system took advantage of a drawback reverse solute flux (RSF) and used the reversed-fluxed Mg for struvite precipitation, thereby ...
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ژورنال
عنوان ژورنال: Separation and Purification Technology
سال: 2016
ISSN: 1383-5866
DOI: 10.1016/j.seppur.2016.02.031