how long will it take to achieve the same 99% killing rate for the virus? (assuming other conditions unchanged)

Q: Sanitary Engineering Potential of Hydrogen (pH) same question please help me:   1-What are the…

A: The pH scale ranges from 0 to 14. A pH of 7 is neutral. A pH less than 7 is acid can burn us. A pH…

Q: An effluent at a flow rate of 3000 m3/d from a sewage treatment plant is to be disinfected. The…

A: To Find :- killing efficiency of micro-organisms.

Q: The number of germs in a certain culture increases at a rate proportional to the number present. If…

A: Given population becomes double in every year

Q: treatment system treating 1.0 m3 /s of water includes a filter followed by a  chlorine contact…

A: We have to find concentration of pathogens in outlet of chlorination tank and volume of chlorination…

Q: A wastewater treatment plant discharges 0.1 m3/s of treated wastewater to a river having a mean flow…

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Q: Problem 6.1 A small stream was found to be contaminated with Lindane, a pesticide known to cause…

A: Given data - Qi = 100 cm3/sec Ci = 50 mg/L For station (1) ,Cdye = 10ug/l CL2 = 0.5 ug/l For station…

Q: In surveying a laboratory, a health physicist wipes a contaminated surface and runs an absorption…

A: There is a possibility that the contaminant is radium-226, which has a beta particle range of up to…

Q: Chemicals are characterized as carcinogens and non-carcinogens for: a developing treatment…

A: Chemicals are classsified as carcinogens and non carcinogens for the purpose of risk assesment,

Q: If the 3-day BOD (BOD3) of a waste is 75 mg/L and the BOD decay constant, k, is 0.345 day-1 , what…

A: Appreciate if there is detailed work with explanation and finds you helpful for ease of…

Q: A 200 m3 lagoon used for raising salmon has its water constantly being replaced in a rate of 7.0 m3…

A:

Q: Why sequestration efficiency of CO2 with increase of CO2 concentration will be decreased?

A: for long term removal of the carbon is known as carbon sequestration. the capturing of the carbon in…

Q: = A waste stabilization pond is used to treat a dilute municipal wastewater before the liquid is…

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Q: The term that refers to coliform bacteria from human or warm-blooded animal feces is ---…

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Q: The disinfection process is used to deactivate the pathogenies microorganisms in water. Consider…

A: To calculate the necessary chlorine dose for disinfection, we consider chlorine demand caused by the…

Q: If the alum dose required to coagulate is 10 ppm, find out the amount of alum (in quintals) needed…

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Q: no-modal distribution

A: Stage 1 Nanoparticles might be made in an assortment of ways. A portion of these may likewise be…

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Q: Which group of constituents is considered nutrients? Nitrate, chloride, and ammonia O Phosphorous,…

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Q: Consider CSTRs in series follows a first-order reaction with the same rate constant as shown in…

A: SOLUTION:

Q: If tomato Juice is having a pH of 4.1, the hydrogen ion concentration will be A 10.94 x 10-5 mol/L B…

A: Given data: A tomato juice having pH = 4.1

Q: Engineers studied the degradation kinetics of Chemical X in a beaker without inflow and outflow. The…

A: Objective: To determine the half-life of chemical X.   Given: Initial concentration of chemical X (t…

Q: a pond is used to treat a dilute municipal wastewater before the liquid is discharged into a river.…

A: The objective of the question is to determine the BOD concentration at the outflow of the pond and…

Q: Initial population of E.coli bacteria was estimated as 1 million counts per 100 ml. The growth rate…

A: E. coli: It is a bacterium that lives in the intestines on a regular basis. Some animals' intestines…

Q: Calculate the risk for a compound with toxicity dose of 10 ug/L, unit risk (RU) of 3.2 x 10-5 L/mg…

A: The formula to calculate the Risk is given by, Risk=Unit Risk×Toxicity dose×Exposure timeTotal time

Q: BOD is widely used for measuring the concentration of biodegradable organic matters in a wastewater.…

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Q: A lagoon with volume 15,000 m3 is being polluted by a stream that flows at 1,000 m3/day and carries…

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Q: 3. Find the concentration of polychlorinated biphenyls in drinking water that would result in a 10-6…

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Q: Discus the process of coagulation and flocculation in the removal of solid particles in drinking…

A: Answer :-    Coagulation is to form flocks by particle segragation and Flocculation is to aggregate…

Q: For Giardia, a typical Ct value is 1000 for chloramines and 25 for free chlorine. Which disinfectant…

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A: Answer  (a) Calculation of Concentration of permethrin entering the lake In order to determine the…

Q: Bleeding may decrease by adding Na20H and CaC12 CaCl2 and K20 Na20 and CaCl2. O CaCO3

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Q: If the alum dose required to coagulate is 10 ppm, find out the amount of alum (in quintals) needed…

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Q: Poorly treated municipal wastewater is continuously discharged directly into a lake. The discharge…

A: The pollutant balance equation for the steady-state is: In-out-Decomposed=0  Also Accumulation=0

Q: A hazardous material was found to decay at a rate proportional to the amount present. Initially,…

A:

Landfills

The landfill is a site used for the disposal of waste materials. The landfill is a solid waste facility that is often known as a dumping ground. The image below shows a landfill site in Hawaii. Landfilling is the most ancient and common method used for the disposal of waste. For the landfill, a deep trench is constructed in an isolated place away from the city. The trench for landfills is designed properly after analyzing the total population and the waste generation per capita. The waste is dumped into the trench and after every layer of waste, a layer of soil is spread on the top of it.