Removal of personal care products (PCPs) from greywater using a submerged membrane bioreactor (SMBR): The effect of hydraulic retention time

Construction of a novel magnetic levitation iron–carbon micro-electrolysis treatment system for dye wastewater and its anti-passivation strategy

“…Hydraulic retention time mainly influences the treatment effect of micro-electrolysis. 24,65 Optimization of the hydraulic retention time can improve the treatment effect of micro-electrolysis and reduce the operating costs. 43 When the calcination time is 3 h, the calcination temperature is 900 °C, the pH is 4, the dosage is 200 g and the aeration rate is 1 L min −1 , Fig.…”

“…The degradation rate of sunset yellow dye could reach 77.5%, the removal rate of methylene blue wastewater was more than 90%, and the removal rate of acid red 18 could reach 98.86%. 22–24…”

“…The degradation rate of sunset yellow dye could reach 77.5%, the removal rate of methylene blue wastewater was more than 90%, and the removal rate of acid red 18 could reach 98.86%. [22][23][24] The removal rate of cationic dyes (e.g., malachite green, methylene blue, crystal violet) was higher than that of anionic dyes (e.g., methyl orange and sunset yellow) by micro-electrolysis. 25 The MET can also cooperate with other technologies to treat dye wastewater.…”

Greywater reuse as a key enabler for improving urban wastewater management

“…This and other particles coming through cause severe biofouling on reverse osmosis (RO) systems downstream. To combat this, biocarriers can be combined with MBR to yield more than 95% surfactant removal [ [73] , [74] , [75] ]. Anaerobic membrane bioreactors (AnMBRs) have also been tested, and these combine an anaerobic bioreactor with membrane filtration, as shown in Fig.…”

Effect of current density on the efficiency of a membrane electro-bioreactor for removal of micropollutants and phosphorus, and reduction of fouling: A pilot plant case study

“…During all stages of operation, the reactor worked at a constant flux of 5 LMH, dissolved oxygen between 3 and 6 mg O 2 /L, filtration/relaxation cycles of 7/3 minutes, electrode materials of aluminum (anode) and stainless steel (cathode), distance between electrodes of 5 cm and electric current exposure times of 5 min ON/10 min OFF. According to Najmi et al [22], a hydraulic retention time -HRT of 16 hr was set for the entire experimental period. Regarding the charge loading, which expresses the total charge passing through to the solution by the current [23], it was 214.17, 428.34 and 642.42 mA•m -3 •hr at current densities of 5, 10 and 15 A/m 2 respectively.…”