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A river system with multiple discharge sources will be utilized for agricultural irrigation. However, it is known that for irrigation to take place, the water must have a Biochemical Oxygen Demand (BOD) of less than 8 mg/L and a dissolved oxygen concentration greater than 5 mg/L. It is assumed that the O'Connor-Dobbins formula is applicable for the reaeration. It is also known that BOD decays at a rate of 0.7 d-1 at 20 C and settles at a rate of 0.2 d-1 in the reaches of 275km-250km, 175km-125km and 100km-0km Please verify if the irrigation water meets the required specifications. The hydrogeometric parameters and reaction kinetics related to the system are provided in the figure given below. If the river system is at an altitude of 750 meters, fill in the necessary information in the table and graph DO-BOD relationship in the network. The river network system is given on the following page.

Q1) A river system with multiple discharge seures will be utilized for acricultural impation. However, it is known that for irrigation to take place, the water must have a Biochemical Oxygen Demand (BOD) of less than 8 mg L and a dissolved oxygen concentration greater than 5mg/L. It is assumed that the OrConnor-Dobbins formula is applicable for the reacration, It is also known that BOD decays at a rate of 0.7d1 af 20C and sentes at a rate of 0.2d1 in the reacher of 275km25km,175km125km and 100km0km Please verify if the irripation water meets the required specifications. The hydrogeometric parameters and reaction kinetics related to the systen are peovided in the fipure given below. If the river system is at an altitade of 750 meters, fill in the neceisary information in the table and graph DO-BOD relationship in the actwork. The river network system is given on the follewing page