Determine the size (L/h) of a proportioning pump to feed ferric chloride for a 0.438 m³/s water treatment plant. The optimum dose selected is 50 mg/L. Ferric chloride may be obtained in a liquid form that is 42% pure. The density of this solution is 1.797 kg/L.

Q: A liquid has a relative density of 0.8 and a kinematic viscosity of 2.3 centistoke. Determinets: (i)…

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Q: 1. The solids content of a stream water sample is to be determned. The total solids content is…

A: Mass of empty dish = W1 = 50.326 gm Mass of dish + sample = W2 = 118.400 gm Mass of dish and dried…

Q: A coagulation treatment plant with flow of 0.5 metre cube per second is dosing alum at 23 milligram…

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Q: Coagulant dosage and optimum pH were determined to be 50 mg/l of ferric sulfate [Fe2(SO4)3] and 6.6…

A: Coagulation Coagulation is a chemical water treatment technique that involves altering electrostatic…

Q: The most important buffer system in water is the carbon dioxide system of acid/base reactions.…

A: Alkalinity of any solution defined as the ability to neutralise the H+ ions in the solution. here…

Q: 1) Estimate the biomass concentration in a CSTR aeration tank with the following operating…

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Q: A small lake with volume 10,000 m3 has a stream flowing into it with flow rate 100 m3/day and a…

A: a) The increase in discharge concentration will cause a slight increase in the lake concentration.…

Q: An activated sludge system using CSTR with sludge recycle has an influent flow rate (Q°) of 2.5 MGD…

A: We have to determine the value of hydraulic retention time he solids retention time and activated…

Q: The secondary NAAQS for SO2 is 0.5 ppm (for a 3-hour averaging time). Calculate the equivalent…

A: Given:- The secondary NAAQS for SO2 is 0.5 ppm To find:- The equivalent concentration in pg/m3

Q: 7. A contaminated soil is to be excavated and treated in a completely mixed aerated lagoon at a…

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Q: You have designed a treatment system for contaminant Z. The treatment system consists of two parts:…

A: Volume of pipe, Volume of CSTR, Flowrate, Influent oncentration, Effluent concentration, To find:…

Biological Processes

Biological solid waste includes bacterial and contaminated waste produced by living individuals. Its treatment is essential to prevent the spread of any air-borne or water-borne diseases or diseases transmitted from one organism to another in a food chain. There are many benefits of the biological solid waste treatment and some of them are: the minimized quantity of waste substance, waste control, eradicating any disease-causing pathogens, generation of biogas, composting, anaerobic digestion, bio drying, mechanical biological treatment, microbial fuel cell, phytoremediation, and biofiltration. The final products of the biological solid waste treatment may be recycled to obtain organic fertilizers or disposed of in SWDS (Solid Waste Disposal Site) after proper treatment.