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    Environmental Engineering

    Environmental engineering is the study to improve the natural environment to provide healthy water, air and land for habitation and to remediate pollution sites. Environmental engineering is concerned with finding plausible solutions in the field of public health, arthropod-borne diseases and implementing law to promote adequate sanitation in urban, rural and recreational areas. It involves waste water management and air pollution control, recycling, waste disposal, radiation protection, industrial hygiene, environmental sustainability and public health issues.

    Environmental engineers study the effects of technological advances on the environment. They conduct hazardous-waste management studies to evaluate the significance of such hazardous-waste management studies to evaluate the significance of such hazards, advice on treatment and containment and develop regulations to prevent mishaps.

    Environmental engineering emerged as a separate discipline during the middle of the 20th century in response to widespread public concern about water and pollution and increasingly extensive environmental quality degradation. The roots of this extend back to public health engineering. Acions are intended to achieve benefits for those societies with longer-term impacts to reduce other environmental qualities. 

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    BrainMass Categories within Environmental Engineering

    Ecological Engineering

    Solutions: 1

    Ecological engineering is the study concerned with the design, monitoring, and construction of ecosystems.

    BrainMass Solutions Available for Instant Download

    Determining Magnitude of Contraction Scour Depth

    Determine the magnitude of the contraction scour depth given the following information about the channel and bridge: (a) The upstream channel width = 322-ft; depth = 8.6-ft (b) Q = 27,300 ft3/sec (c) Channel slope = 0.004-ft/ft (c) Bridge abutments consist of vertical walls with wingwalls, width = 122-ft; with three sets o

    Sludge Digester

    If a mixed primary & waste activated sludge is treated in a digester that will destroy 60% of the VSS, determine the sludge volume (a) before digestion, (b) after digestion and, (c) the percent reduction in sludge volume for 2,500 lb (dry basis) of combined primary/waste activated sludge with the following characteristics:

    Source and destination addresses of router solicitation

    Given an IPv6 network, assume a host using EUI‐64 addressing has a MAC address of00:24:E8:3D:CA:35 and wishes to send a router solicitation to discover the routers on the network. What would the source and destination addresses of this solicitation be?

    Influent Sample and Mass of Suspended Solids

    Influent sample collected from a wastewater treatment plant was analyzed for various solids concentrations. Results indicated concentrations of Total Volatile Solids (TVS), Total Fixed solids (TFS), and Total Dissolved Solids (TDS) to be 300 mg/L, 80 mg/L, and 150 mg/L respectively. If the wastewater flow rate into the treatment

    Temperature Rise of Water

    A 4 X 8-ft solar collector has water circulating through it at the rate of 1.0 gallon per minute while exposed to sunlight with intensity 300 Btu/ft^2-hr. Fifty percent of that sunlight is captured by the collector and heats the water flowing through it. What would be the temperature rise of the water as it leaves the collector?

    A lagoon with volume 1200 m^3

    A lagoon with volume 1200 m^3 has been receiving a steady flow of a conservative waste at a rate of 100m^3/day for a long enough time to assume that steady-state conditions apply. The waste entering the lagoon has a concentration of 10mg/L. Assuming completely mixed conditions, a) what would be the concentration of pollutant i

    Concept of CSTR

    A lagoon is to be designed to accommodate an input flow of 0.10 m^3/s of nonconservative pollutant with concentration 30.0mg/L and reaction rate 0.20/day. The effluent from the lagoon must have pollutant concentration of less than 10.0mg/L. Assuming complete mixing, how large must the lagoon be?

    CSTR Concept

    A lake with constant volume 10X10^6 m^3 is fed by a pollution-free stream with flow rate 50 m^3/s. A factory dumps 5m^3/s of a nonconservative waste with concentration 100 mg/L into the lake. The pollution has a reaction rate coefficient K of 0.25/day. Assuming the pollution is well mixed in the lake, find the steady-state conce

    Composit wast

    Can you help explain the wase concern for industries

    Environmental Law and Policies: Food, Drugs, and Cosmetics

    1. Compare and contrast the purpose and scope of the Federal Insecticide, Fungicide, and Rodenticide Act with the provisions of the Federal Food, Drug, and Cosmetic Act. 2. The Food Quality Protection Act of 1996 repealed the Delaney Amendment; what new provisions of law replaced or substituted for this amendment? 3. Consi

    Environmental Law and Policy: Clean Air and Water

    1. Why is the Clean Air Act of 1970 viewed as relatively strong legislation compared with earlier legislation focused on air quality? 2. Comment on the significance of the following provisions or aspects of the CAA of 1970: national ambient air quality standards; SIPs; attainment and nonattainment regions; air pollution credi

    Philosophies and Actions of Federal Express

    Case Study: Federal Express 1. What is the Federal Express philosophy toward quality? 2. What specific elements/actions has FedEx implemented in its quality improvement history? 3. Discuss the pros and cons of each element/action from question 2. 4. What quality actions should FedEx consider for the future? Best regards

    Civil and Environmental Engineering - Life Cycle

    Chapter 3 1. In accomplishing a needs analysis in response to a given deficiency, what type of information would you include? Describe the process that you would use in developing the necessary information. Chapter 5 16. Describe some of the benefits of physical models and mock-ups. Chapter 6 10. What data are required

    Civil and Environmental Engineering Questions

    Chapter 17 Problem 6 What is the cost breakdown structure(CBS)? What are its purposes? What is included (or excluded)? How does it relate to a work breakdown structure (WBS)? P-7 How does the CBS relate to the functional analysis (if at all)? p-8 Describe some of the more commonly used cost estimating methods. Under w

    Civil and Environmental Engineering

    Ch 13 P-12 What is the purpose of maintainability prediction? When are maintainability predictions accomplished in the life cycle? P-16 How are preventive maintenance requirements determined? How are they justified? What is likely to occur if they are not properly justified? P-23 What criteria are used in the selection

    Discussing System Design

    Hi, I need some assistance answering the following questions: - Why is reliability important in system design? When in the life-cycle process should it be considered? To what extent should reliability be emphasized in system design, and what are some of the factors that govern this? - What are the quantitative measures of

    Solving a PH Problem

    What is the pH value of water containing 0.005 M of an acid with a acid dissociation constant of 0.001 M. The dissociation of the acid in water can be represented as: HA <-> H+ + A- Ka=[H][A]/[HA] Kw=[OH][H]=10^-14 Mass balance equation: Cta=[HA]+[A](MBE) Charge balance equation: CB = [H]=[A-]+[OH-]