Treatment of greenhouse wastewater for reuse or disposal using monovalent selective electrodialysis
نویسندگان
چکیده
Minimal liquid discharge (MLD) in greenhouses minimizes the volume of discharged wastewater, thereby increasing effluent that may be reused. Sodium accumulation wastewater is often considered main bottleneck to achieving 100% reuse. Consequently, have begun adopting reverse osmosis (RO), most commonly used desalination technology for treatment. RO removes ions from indiscriminately, including multivalent nutrients crops (Ca2+, Mg2+, SO42?, PO43?). In contrast, monovalent selective electrodialysis (MSED) selectively sodium while retaining solution. For not achieved MLD, MSED has an alternative application reducing levels nitrate, a ion and agricultural pollutant, disposal. This paper investigates selectivity potential widely-used Neosepta membranes new Fujifilm treat reuse or discharge. Eight compositions are tested as feedwater laboratory system. Both demonstrate towards nitrate across compositions. cation-exchange remove two six ions, compared Neosepta's eight, every magnesium ion. anion-exchange seven six, sulfate
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ژورنال
عنوان ژورنال: Desalination
سال: 2021
ISSN: ['1873-4464', '0011-9164']
DOI: https://doi.org/10.1016/j.desal.2021.115037