Section 1: What is Water Pollution?

Slides:



Advertisements
Similar presentations
Water Pollution.
Advertisements

Section #3: Water Pollution
Environmental Science 2012
1. Panama is in the industrial phase of transition. Describe the expected trends in the country’s birth and death rates. 2. Describe one advantage and.
Chapter 21 Water Pollution
Freshwater Pollution.
General Types of Water Pollution
Water Pollution. Cuyahoga River 1952 Point sources = specific, identifiable sources of pollution factories, sewage treatment plants, mines, oil wells,
Types of Water Pollution
Chapter 22 Water Pollution
Pollution of the Hydrosphere
Water and Its Pollution
Water Pollution.
Types, Effects, and Sources of Water Pollution
Chapter 20 Pollution. Water pollution: any change in water quality that can cause harm to living organisms or make the water unfit for human use (drinking,
Water Quality Environmental Science Mr. Mead Environmental Science Mr. Mead.
Introduction to Water Pollution
Chapter 21 Water Pollution. Vocabulary Water pollution- any chemical, biological, or physical change in water quality that has a harmful effect on living.
WaterSection 3 Water Pollution Water pollution is the introduction of chemical, physical, or biological agents into water that degrade water quality. The.
Water Pollution Chapter 22 Lara, Nanor, Natalie, Sosi, Greg.
Water Pollution Chapter 22. Types of Water Pollution Sewage ↑ Enrichment Explosion in algal, bacteria, & decomposer populations ↑ Biological oxygen demand.
Definition, sources and causes
Chapter 22 Water Pollution. Types of Water Pollution  Water pollution  Any physical or chemical change in water that adversely affects the health of.
WHAT DO I NEED TO KNOW???. NON POINT SOURCES OF POLLUTION CROP LAND FEED LOTS LOGGED FORESTS GOLF COURSES STREETS PARKING LOTS.
General Types of Water Pollution Water Quality Notes.
It is a hard truth to swallow, but nature does not care if we live or die. We cannot survive without the oceans, for example, but they can do just fine.
Chemical Contaminates and their Sources.. Sources of Contaminates Energy Agriculture Industrial/Hazardous Wastes Sewage.
Water Pollution. Questions for Today: What are examples of point and nonpoint pollution sources for water? What are examples of point and nonpoint pollution.
Oceans, Rivers, Streams & Lakes
Water Pollution Chapter 21. Major water pollutants Infectious agents –Bacteria, viruses, protozoa, parasites Source – human and animal waste Effect -
Lesson 1.5 Pg
Water: Pollution and Eutrophication. Delaware River Basin Low flow in the Delaware River during the mid-1960s and in the early 1980s threatened the drinking.
Chapter 21 Water Pollution. Types of Water Pollution  Water pollution  Any physical or chemical change in water that adversely affects the health of.
Water Chapter 5 Part II.
Chapter 22 Water Pollution. Overview of Chapter 22 o Types of Water Pollution Sewage Sewage Disease-causing agents Disease-causing agents Sediment pollution.
Water Sources & Pollutants FS Unit 5 FCS-FS-5: Students will discuss why water and pH are important factors in food preparation and preservation. C. List.
Chapter 22 Water Pollution
SECTION 3: WATER POLLUTION CHAPTER 11- WATER. WATER POLLUTION Definition: the introduction of chemical, physical, or biological agents into water that.
Water Pollution and Solutions Chapter 11 section 4.
1. Why is water important? Water shapes Earth’s surface and affects Earth’s weather and climates. Water needed for life. Living things are made up of.
Water Pollution Chapter 11 Section Three The water you pollute may be your own!
Water Pollution Based on presentation from manskopf.com, Environmnaental Science Course Introduction to Environmental Health Eric Amster MD, MPH.
Water Pollution. Types of Water Pollution Point Source –From a single, traced source –Ex: drain pipes, effluent of sewage treatment Nonpoint Source –Scattered;
CH. 20: WATER POLLUTION By: Alexa Tsaganos and Cricket Slattery.
Water Pollution Any chemical, physical, or biological agent that enters water and negatively impacts the water quality and the water ecosystem.
Water Pollution. Overview o Types of Water Pollution Sewage Sewage Disease-causing agents Disease-causing agents Sediment pollution Sediment pollution.
Ocean Pollution. What is pollution? Pollution occurs when an environment is contaminated, or dirtied, by waste, chemicals, trash, and other harmful substances.
Water pollution 12/9/08. Desalination This is the removal of salt from seawater or other water of marginal quality.
Chapter 22 Water Pollution. Overview of Chapter 22  Types of Water Pollution  Water Quality Today  Improving Water Quality  Laws Controlling Water.
What is water pollution?
TIC-TAC-TOE Review Game
Chapter Eleven: Water.
Oceans, Rivers, Streams & Lakes
Water Pollution.
Chapter 22 Water Pollution.
Water and the Environment
Water Quaility Video Water Quality in NC.
Water Resources and Water Pollution
Most common pollutant in lakes, streams, and rivers.
Point vs. Nonpoint Pollution
Human Effects on Hydrosphere Quality
Water Pollution contamination of water bodies (e.g. lakes, rivers, oceans, aquifers and groundwater occurs when pollutants are directly or indirectly discharged.
Water Pollution.
Bellringer.
Water pollution.
Human Effects on Hydrosphere Quality
Human Effects on Hydrosphere Quality
Water Pollution Chapter 11.
Water Treatment & Pollution: What will I be learning about today
Water Pollution Lecture-2 for Sem 1 students of B.A/B.Sc/B.Com By Mr. Sayantan Dutta Dept. Of Environmental Science B.B.College, Asansol.
Presentation transcript:

Section 1: What is Water Pollution? Unit 12: Water Pollution Section 1: What is Water Pollution?

What is Water Pollution? Water pollution is any change in the quality of water that can cause harm to organisms or make the water unusable to humans Types of Pollution: Point-source – drain pipes (usually) discharge pollutant directly into bodies of surface or underground water Nonpoint-source – broad, diffuse areas of pollution where rainfall runs pollutants into water from land (ex. Agricultural fields, parking lots, logged forests, livestock pens, lawns, etc.)

Leading Causes of Water Pollution Agricultural Activities – sediment erosion = #1; others include fertilizer, pesticide, fecal bacteria, salts, etc. Industrial Facilities – emit harmful inorganic and organic chemicals Mining – surface = erosion, toxic metal runoff; also, acid drainage

Types of Water Pollution Type/Effects Examples Major Sources Infectious agents – cause diseases Bacteria, Viruses, Parasites Human/Animal Waste Oxygen-demanding waste – Deplete DO needed by aquatic organisms Animal waste and plant debris Sewage, animal feedlots, food processing plants, paper mills Plant nutrients – cause excessive growth of algae Nitrates (NO3-) and Phosphates (PO43-) Sewage, animal waste, inorganic fertilizers Organic chemicals – Add toxins to water Oil, gasoline, plastic, pesticides, cleaning solutions Industry, farms, homes Inorganic chemicals – Add toxins to water Acids, bases, salts, metal compounds (oxides, etc.) Industry, homes, surface runoff, mining Sediments – Disrupt photosynthesis, food webs, etc. Soil, silt Land erosion (mostly agricultural) Heavy metals - Cause cancer, disrupt immune, nervous, and endocrine systems Lead, Mercury, Arsenic, etc. Unlined landfills, households, mining, industries Thermal – Increase vulnerability to disease and decrease DO Heat Industrial and Power plants

Oxygen-Demanding Wastes Flowing streams and rivers can recover from moderate levels of oxygen-demanding waste through dilution and bacterial biodegradation Leads to depletion of oxygen Oxygen sag curve!!!!

Plant Nutrient Pollution Leads to eutrophication (and subsequent decrease in DO) In marine ecosystems, can lead to harmful algal blooms (Red/Green/Brown Tides) Release water and air poisons and can deplete DO, leading to oceanic dead zones

Groundwater Pollution Pollution can leak from landfills, agricultural land, industry, and other sources into groundwater. Must be purified prior to use and in some cases, it is permanently contaminated and the aquifer is abandoned

Clean Water Policies Preservation of Clean water Clean Water Act (1972, 1977) established the basic structure for regulating direct discharges of pollutants into the waters of the United States. It gave EPA the authority to implement pollution control programs such as setting wastewater standards for industry. Preservation of Clean water Safe Drinking Water Act of 1974 established to protect the quality of drinking water in the U.S. This law focuses on all waters actually or potentially designed for drinking use, whether from above ground or underground sources. Allowed EPA to set tap water standards. Originally, Congress enacted the Soil Conservation Act of 1935 on April 27, 1935 in an attempt to address farm erosion problems by bringing within its policy and purposes, the improvements and preservation of national soil resources.   Dust Bowl The CRP program originally began in the 1950s as the conservation branch of the Soil Bank Program which was enacted by the Agriculture Act of 1956.

Oceans: The Ultimate Destination Most pollutants ultimately end up in the ocean Ocean currents can transport this pollution all around the planet Currents are driven by: Density differences Temperature differences Gravity Or, Wind

Ocean Gyres Warm and cool currents can influence climate along the coasts Sections of the oceans’ currents create circular, clockwise (Northern) or counter-clockwise (Southern) patterns These are called gyres Pollutants (especially garbage and plastics) can collect in the middle of them

Currents Drive Water Movement Water has the property of cohesion So when currents diverge in an area, water beneath is drawn up This is known as upwelling and generally brings cool, nutrient-rich water to the surface Upwelling can also occur when wind blows across the surface, parallel to a coastline Water can also converge, or sink in an area This is referred to as downwelling and transports surface water rich in dissolved gases such as Oxygen and Carbon dioxide These areas of differing movement of water leads to the earth’s thermohaline circulation Warm, fresher water moves along surface, sinks/cools, and cool, saltier water moves deeper beneath the surface