Waste water management Worksheet-3
(a) Construct collection ponds for animal wastes from feedlots and dairy barns.
(b) Use natural organic fertilizers in place of synthetic inorganic fertilizers.
(c) Allow livestock to wade in and drink from the water.
(d) Maintain vegetation or a mulch cover over soil.
(a) low in nutrients (b) water is not clear
(c) low in dissolved oxygen (d) suffocation of fish and shellfish
(a) sewage effluents (b) mining
(c) agriculture (d) highway construction
(a) lawns and gardens in a suburban area
(b) a sewage treatment plant
(c) city streets in an urban area
(d) an area of farmlands
(a) disease-causing virus.
(b) disease-causing bacterium.
(c) disease-causing organism.
(d) organisms that causes disease in humans.
(a) oxygen content of water and wastewater.
(b) an organism's natural level of oxygen requirement.
(c) a measure of the biological activity of water and wastewater.
(d) the oxygen-using potential of water and wastewater.
(a) Individual home owners operate private septic systems on large lots.
(b) all sanitary sewage water is collected separately from storm water and fully treated to remove all pollutants before the water is release to natural systems.
(c) all sanitary sewage water and storm water is collected in a single sewer system and treated in a single treatment plant.
(d) sanitary sewage water is collected and treated, but storm water is not.
(a) Clean Water Act; 1972.
(b) Clean Water Act; 1984.
(c) National Environmental Policy Act; 1969.
(d) National Environmental Policy Act; 1972.
(a) chlorine gas is poisonous and may threaten nearby homes.
(b) chlorine is a nonrenewable resource and may soon be depleted.
(c) toxic chlorinated hydrocarbons may be formed.
(d) chlorine contributes to depletion of the ozone layer.
(a) Vibiro cholerae (bacterium responsible for cholera)
(b) Salmonella typhi (bacterium responsible for typhoid fever)
(c) Poliovirus (responsible for poliomyelitis)
(d) all of these
(a) mechanical (b) physical
(c) chemical (d) biological
(a) in some instances the sludge may contain high levels of toxic metals.
(b) the potential for groundwater contamination with pathogens.
(c) possible disease outbreaks in livestock grazing on treated lands.
(d) excess nitrogen in sludge could be toxic to plants.