AE 520 Agricultural Water Quality Engineering

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AE 520Agricultural Water Quality Engineering

• Carl E. Anderson
• 206a Davidson Hall
• 294-0204
• 233-2051

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AE 520Course Objectives

• To give the student a background understanding of
  water quality concerns and the impact of
  chemicals on the agricultural environment and
  agricultural workers

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AE 520Course Objectives

• To provide the student with a background
  understanding of the processes and factors which
  determine the fate of chemicals in the
  agricultural environment

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AE 520Course Objectives

• To teach the student how to quantify the rates of
  the processes involved in the transport and
  transformation of agricultural chemicals

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AE 520Course Objectives

• To teach student how to evaluate a system which
  utilizes agricultural chemicals and predict the
  level of control of these chemicals within the
  system using mathematical models.

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AE 520Course Objectives

• To help students understand, design and evaluate
  the alternatives available in dealing with
  chemicals in the agricultural environment.

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Student Performance Assessment

• Two exams 40
• Final Exam 20
• Weekly assignments 20
• Term Project 20
• Total 100

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LITERATURE REVIEW ASSIGNMENTS

• Each week you are expected to review on article
  from a refereed journal dealing with a topic
  being discussed in class during that week. The
  grading for this assignment will be as follows
• 3 points for how well the article fits the topic
  for the week. No popular publication articles
  and no chapters from books are allowed.
• 3 points for a well-written one-paragraph
  summary of the article in your own words.
• 3 points for a one paragraph critique of the
  article. What is the practical importance of the
  information presented in the article? How
  clearly is it written? Are the conclusions
  reasonable, and well supported in the article?
• 1 point for general length and appearance. The
  paper should be no more than one page
  typewritten.
• Give the complete citation for this article in a
  standard format. Also include the library
  reference numbers.

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Define Water Quality
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How do we judge water quality?
It was crawlin' and it stunk but of all the
drinks I've drunk I'm greatfullest to one from
Gunga Din Gunga Din by Rudyard Kipling
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Agricultural Water Quality

• List 5 ways we use water.
• (not limited to agriculture)

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WATER QUALITY CONCERNSHow would you rank these?

• Effects on Domestic Livestock
• Effects on plant growth
• Effects on Wildlife
• Human health hazards
• Aesthetics (taste, odor, color, appearance)
• Suitable for industrial uses

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CLASSES OF AGRICULTURALPOLLUTANTS

• SEDIMENT
• Surface water, fish, recreation, aesthetics
• PLANT NUTRIENTS
• Nitrates mostly in ground water and Phosphorous
  and Potassium in both surface and ground water.
  Nitrates cause health effects for babies and the
  elderly, and for fish.

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CLASSES OF AGRICULTURALPOLLUTANTS

• ANIMAL WASTES
• High Organic loading(BOD), Biological
  contamination (some disease potential), nutrient
  problems.
• PESTICIDES
• Concerns about human health hazards, including
  cancer. More common in surface waters. The
  effects on ground water quality are still largely
  unknown.
• SALTS
• High concentrations are poor for drinking. Most
  impact is on plant growth. Some are toxic. High
  salt concentration can be a problem in steam
  power generation.

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Chemicals in the Environment

• Chemical Transport The processes that move
  chemicals through the environment.
• Chemical Fate The eventual disposition, either
  destruction or long-term storage, of chemicals in
  the environment.

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Point Source Pollution The pollution comes out
of a pipe. Flow is controlled. This kind of
pollution source is most easily identified
and controlled. Usually associated with the
discharge from an industry or waste collection
facility. Non-point Source Pollution (NPS)
The source of the pollution is distributed in
the environment. Flow occurs in response to
natural precipitation events. Most pollution
from Agricultural activities is NPS pollution.
64 of the NPS pollution in US rivers is
from Agriculture. The greatest type of NPS
pollution is Sediment.
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