Relier Pairs Water Pollution Matching GameVersion en ligne Match the term to the definition. par JACQUELINE WILSON 1 Harmful algal blooms 2 Biosolids 3 Phosphate 4 Non-point source 5 Thermal pollution 6 Ocean acidification 7 Sludge 8 Dead zone 9 Primary treatment 10 Biological Oxygen Demand (BOD) 11 Turbidity 12 Secondary treatment 13 Great Pacific Garbage Patch 14 Point source 15 Septic System 16 Dissolved Oxygen 17 Oxygen sag curve 18 Nitrate 19 Fecal coliform test 20 Hardness 21 Effluent 22 Hypoxia 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. The solid material removed as water is purified throughout the treatment process. 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. A condition in which the body of water is deprived of adequate oxygen supply. Test to determine fecal contamination with disease-causing bacteria. One of the best ways to determine water quality. 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. A population explosion of toxic algae caused by excessive nutrient concentrations.EX: Red tides. H. A diffuse source of pollutants, often consisting of many small sources. 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. Water quality being cloudy, opaque, or thick with suspended matter. Caused by soil erosion & algal blooms. Results in reduced sunlight and reduced photosynthesis. A portion of the North Pacific gyre where currents concentrate plastics and other floating debris that pose danger to marine organisms. 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. 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. Organic matter recycled from sewage, especially for use in agriculture. A specific spot, such as a factory, where large quantities of pollutants are discharged. 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. Treated water that is piped into rivers or the ocean following primary and secondary treatment. 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. 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. Plant nutrient (PO43-). Enters waterways primarily through the use of detergent and fertilizer runoff. Too much can cause algal blooms. Area with very low dissolved oxygen levels; appears annually in the northern Gulf of Mexico.
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