Discuss the water treatment plants methods for treating water to make it potable and the contribution of detergents and other chemical waste to water quality.
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Discuss the water treatment plants methods for treating water to make it potable and the contribution of detergents and other chemical waste to water quality. Compare and contrast two waterways where water contamination is extreme (i.e. the Ganges) and another (i.e. the Golden Horn of Istanbul) where waterways have been cleaned up and rehabilitated and discuss the contributing factors to both situations.
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- The party primarily at fault for the water crisis in Flint, Michigan was the governmental agencies. The two main government agencies at fault are the Michigan Department of Environmental Quality and the Environmental Protection Agency, they failed to properly monitor and respond to the major issues that came up involving the water quality, despite receiving very early evidence of there being contamination (Sullivan, 2017). Although others, including city officials and water treatment personnel, share some blame, it was the systemic failures within governmental bodies that allowed the crisis to escalate. Regaining public trust after a significant blow requires transparency, accountability, and meaningful action. Being transparent with the public involves providing accurate information, and letting the public be fully aware of the inter-workings of governmental agency actions. Being accountable involves acknowledging past mistakes, such as putting out a statement admitting fault to how…Indicate whether the following statements about the Clean Water Act (CWA) are True or False. Overall, the CWA has significantly increased the # of streams that are fishable and swimmable since the 1960's The CWA sets standards for drinking water Fines set by the CWA for polluting are often lower than the cost for a company to dispose of wastes legally, and thus companies continue to pollute The CWA does not allow any company or agency to discharge any amount of toxic chemicals or other pollutants into navigable watersWhich of the following are properties of good indicator organisms for water quality? Select all correct answers. not found in the presence of pathogens. better survival rates than pathogens. present whenever pathogens are present in water. capable of reproduction in contaminated waters. incapable of reproduction in contaminated waters. absent in uncontaminated water present in uncontaminated water (endemic) worse survival rates than pathogens.
- Make a unique answer: Describe the methods for identifying and quantifying microbial contaminants in water supplies.You are the lead technical officer at the Environmental Management Authority. You have been asked to investigation the sightings of brown effluent in Brasso Seco. It is believed to be either raw sewage or insufficiently treated cocoa waste from chocolate production. Consider the data in Figure 1 and Table 2 and discuss the following: Discuss the biotic and abiotic processes and factors that would have contributed to the observations, establish the source of origin of the mysterious effluent, and outline whether the parameters are of environmental concernA given municipal wastewater can be treated with the following methods. N + AS, Activated sludge with pre-denitrificationAS + N Activated sludge with post-denitrificationor UCT (Biological Phosphorus Purification designed at the University of Cape Town) Which process needs the greatest addition of lime? (choose the right answer) AS + N N + AS UCT Everyone needs the same amount of additives
- Coliforms are commonly used as an indicator of drinking water quality. As we discussed, in March and April of 1993 there was a major outbreak of gastrointestinal illness in Milwaukee, Wisconsin caused by contamination in the public drinking water supply. As summarized by MacKenzie et al.1, “throughout the period from February to April 1993, samples of treated water from both (water treatment) plants were negative for coliforms and were within the limits set by the Wisconsin Department of Natural Resources for water quality.” Why, in this case, did coliforms remain at acceptable levels despite water contamination that resulted in over 400,000 cases of gastrointestinal illness?A wastewater treatment plant discharges of effluent into a stream. Just upstream from the discharge point, the stream has an ultimate BOD of 5 mg/L.Assuming a cross-sectional area for the stream equal to 100 m2, what ultimate BOD (in mg/L) would you expect to find at a point of 15,000 m downstream?Wastewater Flow: 4 m3/secBOD (ultimate): 40 mg/LRiver Flow: 10 m3/secDeoxygeneation constant kd: 0.22 day-1The table below shows the water quality results of palm oil mill effluent (POME)which you have analyzed in your laboratory. You are given a task to proposemitigation options for the palm oil mill after interpreting the findings. Interpretthe characteristics of POME and its potential effect on the aquatic system to helpyou in designing the mitigation options. Parameters Value Department of Environment (DOE) Limit pH 3.4 - 4.8 5 - 9 Biochemical Oxygen Demand (BOD) (mg/L) 25,000 - 43,750 100 Chemical Oxygen Demand (COD) (mg/L) 80,000 - 100,000 100 Oil and Grease (mg/L) 4,000 - 5,000 10
- List some waste management strategies by three tiered model for pollution management. What are strategies to reduce impact of solid domestic waste Replace - Regulate- Restore-List three advantages and three disadvantages of the use of incinerators as part of a solid waste management plan. Advantages : Disadvantages:What personal efforts can you and others commit to reduce the number of plastic bottles that end up in the landfill? Provide at least 2 examples of how to reduce your use of plastic bottles. Describe what leachate is and how it is formed. Be specific in the steps of how it forms. What are the potential health issues of leachate? How could that affect persons living closest to the landfill?