If 12 ppm of alum dose is required for the treatment of water, find the quantity of alum for the treatment of 10 million litre of water.
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- Drinking water from a dam which undergoes conventional treatment has a computed chlorine demand (due to silt, corrosion and bacteria) amounting to 3.5 ppm. Per PNSDW, such drinking water must have a mandatory chlorine residual of 1.0 ppm at source. If production flow is at 500 cu.m./day, calculate the chlorine dosage needed in pounds per day (PPD).Assume an adult male who weighs 50 kg drinks 2L of water every day and the absorption factor the chemical of concern is 75 percent (so 25 percent of the chemical secreted). The concentration of the chemical in the drinking water is 55 ppb? Determine the does in mg/kg-day.Q.1: Calculate the average daily consumption for a city of 30000 Capita. The daily consumed water 15000 m3 . Q.2: A community with population of 22000 Capita was average consumption of 600 L/Capita/day and fire dictated by a building of ordinary consumption with floor area of 1000 m2 and height of (6 storeys) plus basement, determine: 1- Fire demand (fire flow demand). 2- Maximum daily demand. 3- Maximum daily demand during fire.
- Determine the Chlorine dosage and Chlorine demand for a water treatment plant which uses 50.5 Kg/day of Chlorine to treat 42,500 m3/day of water. Residualchlorine after 30 minutes contact time is 0.56 mg/L?The water supply to a mobile park contains 0.024 ug/L of PCB. Calculate the chronic daily intake (CDI) of PCB (mg/(kg*d)) of an adult resident of the mobile park who weighs 85 kg and consumes 2.3 L of water per day.What is the mode if the water consumption of household in cubic meters for 8 months are 12, 24, 15, 12, 16, 24 and 14?
- Determine the amount of coagulant required per day (kg/day).• Assume that the optimum dosage of alum at 25 mg/L was used and that the density of alum was 600kg/m3, Power = 1736.3 watt, Volume= 10.83 m^3 , water temperature is 20 oC, and velocity Gradient is 400 1/s.• Amount of alum = ? (kg/month)• Volume of alum = ? (m3/month)If a water treatment plant uses 124 chlorine cylinders (cy) during a 30-day period, the average supply from each cylinder is 135 lb. What is the total weight (in lb) of chlorine used in 30 days?The BOD is the measure of what type of pollutant in water? Describe how to do a OBD on water sample. A sample of water that you took from a lake that you visited on vacation gave a BOD measurement of 6 mg/L. Is the lake polluted? If so, what type of pollutant is present?
- Problem 4The decay of chlorine in a distribution system follows first-order decay with a rate constant of 0.015 hr-1. Ifthe concentration of chlorine in a well-mixed water storage tank is 1.00 mg/L at time zero, what will theconcentration be one day later? Assume no water flows out of the tank.Determine the number of 40watts fluorescent lamp to supply the lighting requirements of 1000 heads broiler production. The floor area of a 1000 heads broiler production is 125m² and the space requirements is 12.5m² per 100birds.1. Based on the water filter activity, how would you design a water filter to clean the water you would be using at home? a. What pollutants would you need to filter out? b. What materials would you use to filter each kind of pollutant?