| Abstract: |
Eco-friendly moringa oleifera seed has been exploited in the treatment of commercial laundry waste water (CLWW).The waste water was initially characterized for its physical(pH=11.4,colour=28TCU,odour=soapy/objectionable ,turbidity=38.70NTU, electrical conductivity(EC)=1820uS/cm, and total dissolved solids(TDS)=478.96ppm), chemical (alkalinity=185.70CaCO3/l,phosphate=22.18mg/l,nitrate=73.11mg/l,sulphate=110.50mg/l, fluoride=6.20mg/l, chloride=350.70mg/l and hardness=113.60mg/l), metallic (copper=0.84mg/l, cadmium=3.53mg/l, nickel=0.19mg/l, manganese=0.06,chromium=0.08mg/l, zinc=4.45mg/l, lead=0.05mg/l,magnesium=16.44mg/l,potassium=3.25mg/l) and organic oxygen demands(BOD=475mg/l, COD=832mg/l and DO=0.25mg/l).Five moringa seed dosages (30,60,90,120 & 150mg) were applied in the treatment of a liter of CLWW and achieving a significant treatment or reduction in TDS(30mg/l=70.33%, 60mg/l=40.29%, 90mg/l=30.88%, 120mg/l=21.76% and 150mg/l=14.31%),EC(30mg/l=86.28%,60mg/l=72.39%,90mg/l=68.03%,120mg/l=62.33%,150mg/l=60.37%) and pH(30mg/l=42.98%,60mg/l=40.36%,90mg/l=39.47%,120mg/l=36.84%,150mg/l=35.97%).Defining the objective of the treated wastewater (CLWW), the relationship between the TDS and EC was established with the regression coefficient (R2) of 0.656 which declares the reuse or recycling of the treated wastewater in agricultural activities especially in irrigation. |
