Treatment of brackish water inland desalination brine via antiscalant removal using persulfate photolysis

Abstract

Brine disposal is a challenging issue for brackish water desalination in inland regions. This study developed an ultraviolet-driven persulfate oxidation pre-treatment (UV/PS) followed by a chemical demineralization (CDM) and microfiltration...

Pilot-scale evaluation of the sustainability of membrane desalination systems for the concentrate volume minimization of coal chemical wastewater

“…6 Consequently, the further concentration of ROC remains challenging due to the membrane fouling/scaling induced by a high concentration of retentates coupled with a diverse mix of substances present in ROC. 7 Currently, the concentration technology for ROC mainly includes thermal concentration and membrane concentration. Thermal-based concentration technologies are relatively energy-intensive.…”

“…6 Consequently, the further concentration of ROC remains challenging due to the membrane fouling/scaling induced by a high concentration of retentates coupled with a diverse mix of substances present in ROC. 7…”

Reverse Osmosis with Intermediate Chemical Demineralization: Scale Inhibitor Selection, Degradation, and Seeded Precipitation

“…Hence, a scale inhibitor is necessary before SRO to avoid mineral salt scaling on the surface of the SRO membrane [16][17][18]. After SRO, the scale inhibitors in the SRO concentrate need to be destroyed to precipitate CaSO 4 [17,19]. Accordingly, we propose the following two-stage inhibitor is necessary before SRO to avoid mineral salt scaling on the surface of the SRO membrane [16][17][18].…”

“…Accordingly, we propose the following two-stage inhibitor is necessary before SRO to avoid mineral salt scaling on the surface of the SRO membrane [16][17][18]. After SRO, the scale inhibitors in the SRO concentrate need to be destroyed to precipitate CaSO4 [17,19]. Accordingly, we propose the following two-stage RO process with ICD to treat brines (Figure 1), where the SRO concentrate is treated with ICD to remove CaSO4 and then mixed with the PRO concentrate for further desalination in SRO.…”

A highly efficient and sustainable photoabsorber in solar-driven seawater desalination and wastewater purification

“…[1][2][3] Moreover, there is a severe shortage of drinking water resources in the world. 4,5 Hence, the supply of freshwater using salt water desalination or wastewater treatment is very necessary and vital. Traditional freshwater production methods, such as reverse osmosis, [6][7][8] multi-stage ash distillation, 9 multi-effect distillation, 10 electrodialysis/electrodialysis reversal, 11 membrane distillation, 12,13 and capacitive deionization 14,15 are facing three key challenges: complex equipment requirements, high energy consumption, and high cost.…”