1. Calculate JNoz for the environment of different zenith angles (0, 30, and 60 degree). Then estimate the daily variation of JNO2, NO, NO2 and ozone if the NOx (NO+NO:) 2) level stays same during the entire day.

Q: 7. The emissions from a stack were measured by collecting a sample on a filter. The sampler was…

A: Given- Inlet area=12.5cm2Inlet Velocity=20m/sStack Gas temp =340KPressure=1.018 atmVolumetric flow…

Q: Question 2. A coal fired power station requires an ESP for dust removal from the flue gas. The…

A: Given:- The concentration of the dust particles in the influent flu gas = 5200 mg/m3  The flow rate…

Q: Environmental Engineering The air quality standard for ozone (O3) is 80 ppbv. Express that standard…

A: The air quality standard for ozone is 80 ppbv.The temperate (T) is 25ºC.Convert the unit of…

Q: Consider a pollutant whose concentrations follow a normal distribution with a mean of 5 ppm. It is…

A: GIVENmean=5ppmPX>6.165=1%using standard nomal distribution…

Q: Your engineering firm has been hired to design a new drinking-water treatment plant to treat water…

A: Given: Flow Rate = 3.1×106 L/hr Cross- Sectional area of each filter= 5m×5m  Depth of layer of sand…

Q: The primary air quality standard for NOx expressed as NO2 as an annual average is 100…

A: The annual average of NO2 = Temperature, T = To determine the equivalent concentration in ppm.

Q: conversion: Given 200 ppmv SO2 (@STP), what is the SO2 emission rate in lb/hr.

A: Concentration of  At STP,Temperature Pressure

Q: Suppose the ambient atmospheric temp profile of an area is given by the following equation: ɼ (°C) =…

A: The variation coeffecient is a statistical indicator of the data points' relative dispersion. Mostly…

Q: Turnover time for the humidity in the atmosphere is equal to? A- Evapotranspiration rate/volume of…

A: Given data : - Turnover time for the humidity in the atmosphere is equal to? A- Evapotranspiration…

Q: S. List the following air pollution control devices in order of their decreasing efficiency settling…

A: step 1-

Q: Q4)) A reservoir has an average area of 500 km2, its evaporation estimated to be 75% of class A pan…

A: Given data  Average area=500 km2Evaporation from reservoir=0.75×calss A pan evaporationNet radiation…

Q: Provide a reasonable design for a 99,4% efficient ESP treating 30,000 m3/mm of gas, The dust has a…

A: The given data is shown below: Efficiency=99.4 %Discharge=30,000 m3/minResistivity=7.1×1010 ohm-cm

Q: Calculate the AQI and give a description of air that contains 5 ppm CO (8-hour average), 300 pg/m3…

A: AQI : AQI means Air Quality Index which is a measurement of various pollutants that are present in…

Q: Ozone (O3) is a regulated atmospheric contaminant under CAA with a NAAQS of 0.08 ppmv . Assuming a…

A:

Q: Consider a 300 m3 home with an infiltration rate of 0.2 ach, temperature of 25oC, and pressure of 1…

A:

Q: It is desired to increase the rate of filtration by raising the speed of rotation of the drum. If…

A:

Q: The total mercury concentration in the San Francisco Bay Area is reported to be 2.1 mg/m3 in air.…

A: Given that: Total Mercury concentration = 21mg/m3

Q: If the air temperature on the ground is 25˚C, and the dry adiabatic lapse rate is 10˚C, and the…

A:

Q: estimate the NO source strength of the heater

A:

Q: 14. A fire detector cannot detect: A. O Radiation А. В. O Heat С. O Light D. O Smoke

A: Fire detector cannot detect

Q: Design a trickling filter system for BOD removal without the nitrification requirement, to treat…

A: Given,Average flow of waste water=200 m3/dInfluent BOD = 200 mg/LInfluent Ammonia = 42…

Q: 6.9. A ground-level source (H=0) is emitting pollutants at an unknown rate; u = 3 m/s. At I km…

A:

Q: 8) Which of the following is often used as the indicator of indoor pollutants? A: CO B: NO C: CO2 D:…

A: this question is from environmental engineering

Q: A weather station measures an air pressure of 2,000 psi and a temperature altitude of 30,080 ft at a…

A:

Q: 8. The national ambient air quality standard for sulfur dioxide is 80 ug m-³. Assuming an amount of…

A: Given  National ambient air quality standard for sulfur dioxide = 80 ×10-3 mg/m3  Amount of air…

Q: The recommended threshold limit value (TLV-ACGIH) air concentration for occupational exposure to…

A: (a) The drinking water of the town watsford Ny contains the USEPA with low levels of benzone…

Q: Contaminant X is detected in a drink- ing water supply (4000 m³/day), and 94.99 percent of…

A: The design air-to-water flow ratio (L/W_design) for the air stripping packed tower is approximately…

Q: Convert 100 micrograms per cubic meter of ozone to ppm. T=300K, p at z=10km is 21880kgm^-1s^-2,…

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Q: The following data was obtained from a test program designed to evaluate a new diffused-air aeration…

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Q: A convective kerosene heater is tested in a well-mixed 60 m3 chamber having an air exchange rate of…

A: Since the given concentration is in ppm, first we need to convert it into mg/m​​​​​​3 Molecular…

Q: The 1-hour National Ambient Air Quality Standard for nitrogen dioxide (NO2) is 0.10 ppmv. Calculate…

A: National Ambient Air Quality Standard for NO2 = 0.1 ppm Temperature = 25°C To determine the…

Q: If (Qr/Q=120 percent of discharge), effluent BOD concentration=80ppm, volume of filter =825m3 ,…

A: Given QrQ=120% of discharge BOD concentration=80ppm volume of filter, V =825m3 Discharge , Q=50L/sec

Q: Discuss briefly the effects of air pollution to human health, animals and plants.

A: Air particulate matter toxicants have distinct toxic effects on humans depending on how long they…

Q: 2. Consider a "tight" 300 m³ home with o.2 ach infiltration rate. The only source of CO in the home…

A: Considering a tight 300 m3 home with 0.2 ach infiltration rate.  The source strength of oven…

Q: Refrigerant-134a at 300 psia has a specific volume of 0.2235 ft³/lbm. Determine the temperature of…

A: Answer Explanation:Step 1: Step 2: Step 3: Step 4:

Q: The ozone concentration [O3] sometimes reaches a value of 0.25 ppm over a 1 hour period in urban…

A: