Growth and nutrients removal characteristics of attached Chlorella sp. using synthetic municipal secondary effluent with varied hydraulic retention times and biomass harvest intervals

2022 ◽  
Vol 61 ◽  
pp. 102600
Author(s):  
Ya-Nan Wang ◽  
Hao Pang ◽  
Chong Yu ◽  
Chi Li ◽  
Jing-Han Wang ◽  
...  
Keyword(s):  
Secondary Effluent ◽  
Nutrients Removal ◽  
Biomass Harvest ◽  
Chlorella Sp ◽  
Harvest Intervals ◽  
Municipal Secondary Effluent

The Removal of Inorganic Anions from Municipal Secondary Effluent Using Magnetic Ion Exchange Resin

2011 ◽  
Vol 374-377 ◽  
pp. 1170-1178
Author(s):  
Jian Yang ◽  
Jiang Chang ◽  
Yi Ping Gan ◽  
Jin Hua Gao
Keyword(s):  
Ion Exchange ◽  
Phosphorus Removal ◽  
Removal Rate ◽  
Exchange Process ◽  
Reclaimed Water ◽  
Phosphorus Concentration ◽  
Secondary Effluent ◽  
Ion Exchange Process ◽  
Magnetic Ion ◽  
Municipal Secondary Effluent

The primary objective of this research was to evaluate the effectiveness of a magnetic ion exchange process (MIEX) in removing inorganic anions from municipal secondary effluent. Municipal secondary effluent drew from Gaobeidian wastewater treatment plant treating about 800,000 m3/day domestic wastewater. In the pilot experiment, MIEX resin removed 37.01% phosphorus, 31.62% nitrate, 36.06% ammonium and 64.34% sulphate from municipal secondary effluent. Phosphorus concentration in resin influent influenced reclaimed water treatment efficiency. Phosphorus removal rate was positively correlated with the concentration in influent. If phosphorus concentration in influent was >0.82mg/L, phosphorus removal of >52% was achieved. Nitrate and sulphate removal had same variation laws. 18.92% average removal rate of nitrate in middle period was lower than 35.06% and 39.25% average removal rates in earlier and latter periods respectively. The average removal rates of ammonium in three periods were 83.03%, 43.51% and 84.29% respectively. Removed ammonium of each sample was about 0.250mg/L, average removal rate was 36.06%. Lower ammonium concentration in influent could cause higher removal rate. Otherwise, magnetic ion exchange process could increase turbidity and could not disinfect, the resin effluent will be treated with coagulation-sedimentation and ozonation for groundwater recharge research with reclaimed water.

scholarly journals Removal of organophosphate esters from municipal secondary effluent by ozone and UV/H2O2 treatments

2015 ◽  
Vol 156 ◽  
pp. 1028-1034 ◽  
Author(s):  
Xiangjuan Yuan ◽  
Silvia Lacorte ◽  
Joyce Cristale ◽  
Renato F. Dantas ◽  
Carme Sans ◽  
...  
Keyword(s):  
Secondary Effluent ◽  
Organophosphate Esters ◽  
Municipal Secondary Effluent
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