Reference no: EM131377472
Question: The village of Pongelton is in the valley of the River Pong. The mean flow of the river is 3.0 m3/s. The population of Pongelton is 6,000. The daily average water consumption is 250 litre / head / day. Water utilisation (i.e. the water spent for watering gardens, watering animals, etc) is 20%. Sewers are built in the village and the construction of a sewage treatment works is planned.
The local government also wishes to construct a small recreational reservoir downstream of the site of the planned effluent discharge. The Environment Agency requires an assurance that the aquatic environment of the planned reservoir will not be impaired by the discharge of the final effluent from the sewage treatment works. Thus, the Environment Agency will require the sewage treatment works to be designed for phosphorus removal, in order to avoid eutrophication downstream of the discharge. To achieve this, the concentration of phosphorus in the inflow to the planned reservoir must be less than 40 mg/m3. The average phosphorus concentration of household sewage is 10 mg/l and the phosphorus concentration of the unpolluted river, upstream of Pongelton is 10 mg/m3.
You are the designer and must address the following issues:
1. If no treatment facility is provided, what will the phosphorus concentration of the river be downstream of the sewage discharge?
2. Does this value meet the EA's quality requirements?
3. If not, in percentage terms, what degree of treatment should be provided for phosphorus removal. Express your answer in percentage terms (i.e. percentage of phosphorus to be removed)"
|
Is olivo correct in given situation
: The guard stopped him short of the exit. Olivo maintains that larceny is not legally established unless the defendant leaves a place of business without paying for merchandise in his possession. Is Olivo correct? Explain.
|
|
Describe implications of managing health information
: Do you believe that health information technology should be managed as a service, cost, profit, or investment center? Support your opinion with at least two resources from outside the required readings.
|
|
How do the rates of corrosion compare for the two cases
: Metal plates having a total exposed area of 1 m2 are fastened together with rivets having a total exposed area of 100 cm2. The environment contains moisture, and possibly some salt.
|
|
Who if anyone has liability to robin and why
: Robin's leg is broken in the fall, and he cries out, ‘‘Holy broken bat bones! My leg is broken.'' Who, if anyone, has liability to Robin? Why?
|
|
Does value meet the eas quality requirements
: If no treatment facility is provided, what will the phosphorus concentration of the river be downstream of the sewage discharge - Does this value meet the EA's quality requirements?
|
|
Does size of the tank will affect measurement of zebrafish
: I believe it will have the same effect, but to save the environment I will just use 2 zebrafish.( but find the evidence that 2 zebrafish is enough). Does the size of the tank will affect the measurement of zebrafish?
|
|
What rights if any does cused have against ceo
: Cused is indicted for embezzlement but subsequently is acquitted upon establishing her innocence. What rights, if any, does Cused have against CEO?
|
|
What is the historical importance of this tribe
: What is the historical importance of this tribe?Discuss at least 3 aspects of Passamaquoddy life, such as:Pre-Colonial type of clothing, homes, lifestyle, important events, people, modern life, court cases with the U.S. government.
|
|
Has a battery been committed
: 2. The Saturday Evening Post featured an article entitled ‘‘The Story of a College Football Fix,'' characterized in the subtitle as ‘‘A Shocking Report of How Wally Butts and Bear.
|