Relacionar Columnas Water Pollution Matching GameVersión en línea Match the term to the definition. por JACQUELINE WILSON 1 Primary treatment 2 Hardness 3 Dead zone 4 Great Pacific Garbage Patch 5 Effluent 6 Nitrate 7 Dissolved Oxygen 8 Point source 9 Ocean acidification 10 Sludge 11 Hypoxia 12 Fecal coliform test 13 Secondary treatment 14 Oxygen sag curve 15 Harmful algal blooms 16 Thermal pollution 17 Septic System 18 Non-point source 19 Phosphate 20 Biosolids 21 Turbidity 22 Biological Oxygen Demand (BOD) How much demand there is for oxygen in the water. When this is high it can be a sign of fecal contamination of water. Introduction of biological waste will cause BOD to increase. Clean water has a low BOD. Presence of certain ions in water (Ca+ and Mg+). Hard water contains a larger amount of these ions than soft water. The O2 gas in between H2O molecules. When this is low, it can be a sign of fecal contamination of water. Warm water = low DO. Cool water = high DO. Fast moving water = high DO. Slow/stagnant water = low DO. A stage of wastewater treatment in which biological means are used to remove contaminants remaining after primary treatment. Wastewater is stirred up in the presence of aerobic bacteria, which degrade organic pollutants in the water. The wastewater then passes to another settling tank, where remaining solids drift to the bottom. The curve obtained when the concentration of dissolved oxygen in a river into which sewage or some other pollutant has been discharged is plotted against the distance downstream (downward flow) from the sewage outlet. Samples of water are taken at areas upstream (against flow) and downstream from the sewage outlet. Test to determine fecal contamination with disease-causing bacteria. One of the best ways to determine water quality. A population explosion of toxic algae caused by excessive nutrient concentrations.EX: Red tides. Plant nutrient (PO43-). Enters waterways primarily through the use of detergent and fertilizer runoff. Too much can cause algal blooms. K. Process by which today’s oceans are becoming lower in their pH as a result of increased carbon dioxide concentrations in the atmosphere. As the ocean water absorbs carbon dioxide from the atmosphere it reacts and forms carbonic acid. This impairs the ability of corals and other organisms to build exoskeletons of calcium carbonate. Plant Nutrient (NO3-). Enters waterways primarily through sewage contamination and fertilizer runoff. Too much can cause algal blooms. Excess amounts in water causes Blue Baby Syndrome. Water quality being cloudy, opaque, or thick with suspended matter. Caused by soil erosion & algal blooms. Results in reduced sunlight and reduced photosynthesis. A rise in the temperature of rivers or lakes that is injurious to water-dwelling life and is caused by the disposal of heated industrial waste water or water from the cooling towers of nuclear power plants. Warm water results in LOW DO. Treated water that is piped into rivers or the ocean following primary and secondary treatment. A stage of wastewater treatment in which contaminants are physically removed. Wastewater flows into tanks in which sewage solids, grit, and particulate matter settle to the bottom. Greases and oils float to the surface and can be skimmed off. Highly efficient, self-contained, underground wastewater treatment system often found in rural regions not connected to city pipes. Wastewater flows from the home to the septic tank through the sewer pipe. The septic tank treats the wastewater naturally by holding it in the tank long enough for solids and liquids to separate. The solid material removed as water is purified throughout the treatment process. A portion of the North Pacific gyre where currents concentrate plastics and other floating debris that pose danger to marine organisms. Area with very low dissolved oxygen levels; appears annually in the northern Gulf of Mexico. A specific spot, such as a factory, where large quantities of pollutants are discharged. A condition in which the body of water is deprived of adequate oxygen supply. H. A diffuse source of pollutants, often consisting of many small sources. Organic matter recycled from sewage, especially for use in agriculture.
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