iron in water causes spots and stains on textile and paper excessive Chlorides in water, increase conductance scales formed in boilers because of hard water, are good conductors of heat fishermen nets are deteriorated because of acidic and alkaline waters
Answer Discuss in Comment
sewage irrigation composting septic tank treatment aerated lagooning
nutrients and trace elements required by plants are available in sewage it is abundantly available it is a cheap method of sewage disposal it is a hygienic method
sewage itself due to pathogens within land unable to accept any more loading of sewage plants because of harmful elements of sewage irrigation humans due to consumption of crops grown on sewage
duration of rainfall slope of catchment intensity of rain fall evaporation and percolation
30 m/ s and 90 m/ s 0.6 m/ s and 3 m/ s 30 cm/ s and 90 cm/ s 2 m/ s and 10 m/ s
illuminating sewer line testing sewers repairing cleaning sewer line
divert excessive combined flow into open drain divert excessive DWF into open drain divert excessive storm water into open drain divert DWF into open drain
be free from floating impurities not be very hot be free from suspended solids be having a BOD less than 150 mg/l
less than 25 mm 20 to 75 mm 75 mm 100 mm
"Scientists dream about doing great things. Engineers do them."
