A water treatment plant is using chlorine for disinfection of its finished water. It is considering...
A water treatment plant is utilizing its clearwell as the sole method of achieving Ct compliance for inactivation of giardia. The chlorine residual leaving the clearwell is 1.4 mg/L. For a 0.5 log inactivation of giardia at a water temperature of 5ºC and a treated water pH of 8.0, the Ct value from the tables is 38. If the peak flow rate is 8,000 gpm, and the clearwell baffling factor is 0.7, what is the minimum water depth required to...
i. A 150MLD water treatment plant needs a dosage of 2 ppm chlorine to maintain a residual chlorine of 1.2 mg/L. What is the quantity of chlorine required (in kg) for the whole month of August 2020? ii. Describe three (3) approaches that can be used for water disinfection.
A water treatment plant (10 MGD) uses 50 kg/d of chlorine. The residual chlorine after 30 minutes contact time is 0.55 mg/L. Find the chlorine dosage and chlorine demand of the water.
[3 pts] A water treatment plant consists of coagulation, flocculation, sedimentation, filtration and disinfection. The suspended solids concentration in the raw water coming into the plant is 500 mg/L and the plant treats 8 MGD. Alum (Al2(S04)3 14H20) is used as a coagulant with a dose of 50 mg/L. Compute the total solid sludge produced daily if a complete reaction of alum to aluminum hydroxide (Al(OH)3] occurs and 98% total solids are removed by the sedimentation and filtration steps. The...
Please answer each part with necessary equations and explanations with temperature, T = 64F. Thank you! II. Drinking Water Treatment (30 points) The Belmont Water Treatment plant extracts water from the Schuylkill River. The river often carries 0.010 mm silt particles with an average density of 2.2 g/cm'. The treatment plant uses a circular clarifier in the primary step. The clarifier is 3.5 m deep and 21 m in diameter. After primary and secondary treatment, 2 mg/L free chlorine is...
A water treatment plant with an average flow of Q-1,0 m3/s treats its water with alum at a dose of 30 mg/L. Alum coagulation is used to remove particulate matter, reduce the concentration of organic matter, and reduce the alkalinity of the water according to Equation 10-1. If the organic matter concentration is reduced from 10 mg/L to 2 mg/L. determine the total mass of Al(OH)3 removed per day O 708 kad 652 kg/d 674 O 720 kg • If...
10. Write a one-page summary of the attached paper? INTRODUCTION Many problems can develop in activated sludge operation that adversely affect effluent quality with origins in the engineering, hydraulic and microbiological components of the process. The real "heart" of the activated sludge system is the development and maintenance of a mixed microbial culture (activated sludge) that treats wastewater and which can be managed. One definition of a wastewater treatment plant operator is a "bug farmer", one who controls the aeration...