Dried sludge can be used as _________
a) Fertilizer b) Pesticide c) Reagent d) Medicine
a) Fertilizer b) Pesticide c) Reagent d) Medicine
a) Sludge formed b) Dissolved impurities c) Dissolved solids d) Micro organisms
a) Increase efficiency b) Decrease efficiency c) Increase pressure d) Decrease dissolved oxygen
a) Fast b) Slow c) Very fast d) Moderate
a) Chlorine b) Bromine c) Fluorine d) Iodine