Water quality mix model Essay Example | Topics and Well Written Essays - 1000 words

Water quality mix model - Essay Example3. (1/2 mark) Convert the concentrations to meq/L and calculate the total meq/L of cations (positive) and anions (negative) and calculate the Charge ease error. Does the CBE indicate an accurate analysis or should another sample be analysed by the laboratory?4. (3 marks) Assume that the mine impair or V water is a mix of water from the coal seam C and an unknown source X. In the example with available data from a big wall coal mine, water X could be S (sandstone roof) or water X could be F ( upstartwater). The mix proportion M could be from 0.01 to 0.99. Several water mix scenarios might be physically possible.6. (1/2 mark) Using the ANZECC guidelines, find the guideline value for Zinc for 95% protection of fresh water aquatic species. Which of the above mix scenarios complies with this guideline value if the waters from the coal seam void were to be pumped and ventingd to a river?The following geochemical model results are presented for a PHREEQC model of a water mix from 19% fresh rain and 81% of C coal seam. PHREEQC predicts that the pH of the conglomerate water is 7.2. Examine these extracts from the output register and answer the questions following.5. (2 marks) Install PHREEQC following instructions in the extension that follows. Run PHREEQC using the mix input file provided and then edit the mix input file for the scenario in Question 4b) above where X = F (freshwater) based on TDS. For the mixed water result, what is the pH, major ion, zinc concentration and zinc speciation?Prepare a brief critical review that describes options for mitigating the effects of discharging flavour and metals on the river using a variety management options. Concentrations for example may involve source and discharge controls, geochemical attenuation, physical structures and treatment.It is vital to maintain the rain water with the aid of the LID (Low Impact Development techniques) handle green roof. These assist in the juris diction of