Introduction to Environmental Engineering and Environmental Science

Core Concepts of Environmental Engineering and Science

• Environmental Engineering Science Context ($1998$)

  • The field focuses on the quality and availability of environmental resources and the waste streams that impact them.

  • Science: Specifically concerned with improving the fundamental understanding of natural processes.

  • Engineering: Focuses on using scientific understanding to develop and apply technologies that maintain or improve the quality of the environment.

• Roles and Definitions

  • Environmental Engineer: Defined as a problem solver who utilizes science to resolve real-world complications. This professional applies scientific tools specifically to address environmental issues.

  • Formal Definition of Environmental Engineering: This discipline is the integration of science and engineering principles intended to:

    • Improve the natural environment.

    • Provide healthy water, air, and land for human habitation.

    • Support the health of other organisms.

    • Remediate sites that have been affected by pollution.

Defining the Environment

• Multifaceted Definitions of Environment

  • The specific circumstances or conditions that surround an individual organism or a group of organisms.

  • The complex web of social or cultural conditions that affect an individual or a community.

  • The sum total of all conditions and influences that affect the development and life of every organism on Earth.

• Total Surroundings: Interaction Categories

  • Living Things (Biotic): Includes animals, plants, forests, and other biological entities.

  • Non-Living Things (Abiotic): Includes physical components such as continents, oceans, clouds, soil, and rocks.

  • Built Environment: Refers to human-created spaces, including buildings and living centers.

  • Social Domain: Includes human relationships and social institutions.

Principles of Environmental Science

• Scope and Interaction

  • Environmental science is the study of how humans interact with their environment.

  • The environment is considered to be everything surrounding us, encompassing both natural and man-made elements.

• Interdisciplinary and Holistic Nature

  • It is a systematic study of the environment and the human place within it.

  • The field integrates multiple disciplines, including:

    • Natural Sciences

    • Social Sciences

    • Humanities

  • The goal is a broad, holistic study of the world.

  • The focus is on understanding and resolving problems in the natural environment, specifically addressing issues like pollution or the loss of biodiversity.

  • It incorporates critical discussions on policy, population dynamics, economics, and the process of urbanization.

• Applied Goals

  • The primary applied goal is the development of solutions to environmental problems.

  • It addresses the bidirectional relationship: how the natural world works and the impacts exchanged between the environment and humans.

Scopes and Specific Domains of Environmental Engineering

• Primary Areas of Concern

  • Air Pollution and control.

  • Water Pollution and management.

  • Solid Wastes.

  • Global Climate Change and its associated impacts.

  • Hazardous Wastes.

  • Radioactive Wastes.

  • Integrated Systems.

  • Pollution Prevention strategies.

  • Other forms of pollution including noise pollution and light pollution.

Natural Resources and Human Survival

• Definition of Natural Resources

  • These are substances and energy sources vital for human survival.

• Renewable Natural Resources

  • Perpetually Available Resources: These include sunlight, wind energy, wave energy, and geothermal energy.

  • Short-period Renewal Resources: These include timber (forest products), agricultural crops, fresh water, and soils.

  • Caveat: Renewable resources can be destroyed if not managed properly.

• Nonrenewable Natural Resources

  • These resources can be depleted because they do not renew on a human timescale.

  • Examples: Crude oil, natural gas, coal, and metals such as copper and aluminum.

Major Environmental Issues and Problems

• Categorization of Environmental Challenges

  1. Air Pollution: Contamination of the atmosphere by harmful substances.

  2. Water Pollution: Contamination of water bodies (lakes, rivers, oceans, groundwater).

  3. Noise Pollution: Dissemination of harmful or annoying noise levels.

  4. Soil Pollution: Presence of toxic chemicals or pollutants in the earth.

  5. Light Pollution: Excessive, misdirected, or obtrusive artificial light.

  6. Industrial Pollution: Pollution originating directly from industrial practices.

  7. Marine Pollution: The entry of chemicals or particles into the ocean.

  8. Thermal Pollution: Degradation of water quality by any process that changes ambient water temperature.

  9. Solid Waste Management: The collection, treatment, and disposal of solid discarded materials.

Applied Challenges and Discussion

• Seatwork and Evaluation

  • Critical evaluation of the specific environmental challenges faced today.

  • Requirement to identify at least $10$ distinct environmental issues currently impacting the world.