Q5. A wastewater treatment plant disposes of its effluent in a surface stream. Characteristics of the stream and effluent are shown below. Assume that K1&K2 are not function of Temperature (a) What will be the dissolved oxygen conc. in the stream after 2 days? (b) What will be the lowest dissolved oxygen concentration as a result of the waste discharge? (c) Also calculate the maximum BOD BO5 that can be discharged if a minimum of 3.0mg/L of oxygen must be maintained in the stream? Q5. A wastewater treatment plant disposes of its effluent in a surface stream. Characteristics of the stream and effluent are shown below. Assume that K1&K2 are not function of Temperature (a) What will be the dissolved oxygen conc. in the stream after 2 days? (b) What will be the lowest dissolved oxygen concentration as a result of the waste discharge? (c) Also calculate the maximum BOD BO5 that can be discharged if a minimum of 3.0mg/L of oxygen must be maintained in the stream