EnviSci

• Environmental Engineering


  The study of living organisms and how they interact with our environment. It covers a broad range of disciplines, including engineering, information, studies and research of environmental issues.
• Environmental Science


  Deals with the interaction between the physical, chemical and biological components of the environment. Aims to understand our surroundings better by utilizing different fields and combining the various findings to create a complete picture.
• Physical Components


  • Land
  • Water
  • Air
• Chemical Components


  • H2O
  • CO2
  • O2
• Biological Components


  • Biotic
  • Abiotic
• Climate Change


  Change in climate, weather, temperature, humidity, etc.
• Global Warming


  Change in temperature only
• Environment


  Surrounding or enveloping
• Environmental Science is a multidisciplinary science which combines physics, chemistry, biology, medical, health science, life science, agricultural science, forestry, public health engineering and so on.</b>
• The main objective of Environmental Science is to protect the environment.
• Environmental Engineering


  The application of science and engineering knowledge and concepts to care for and/or restore our natural environment and/or solve environmental problems.
• Environmental Science Engineering


  • Energy Efficiency
  • Waste Management
• Energy Efficiency


  • Natural Sunlight
  • Proper Ventilation
• Waste Management


  • Waste water treatment facility or plan
  • Rain Water Harvesting
• The word Environment is derived from the french word "Environ" which means "surrounding".
• Biotic Factors


  • Human beings
  • Plants
  • Animals
  • Microbes
• Abiotic Factors


  • Light
  • Air
  • Water
  • Soil
• Environment is a complex of many variables, which surrounds man as well as the living organisms.
• Environment includes water, air and land and the interrelationships which exist among and between water, air and land and human beings and other living creatures such as plants, animals and microorganisms.
• The natural environment consist of four interlinking systems namely the atmosphere, the hydrosphere, the lithosphere and the biosphere. These four systems are in constant change and such changes are affected by human activities and vice versa.
• Types of Environment


  • Natural Biotic and Abiotic Components
  • Man-Made
• Components of Environment

  • Abiotic/Non-Living/Physical
  • Biotic/Living
  • Energy Components
• Abiotic Environment


  • Land
  • Mountains
  • Rivers
  • Air
  • Water
  • Temperature
  • Humidity
  • Water vapour
  • Sand
  • Dust
  • Clouds
• Biotic Environment


  • Animals
  • Birds
  • Forests
  • Reptiles
  • Insects
  • Bacteria
  • Microorganisms like algae, fungus
• Scope of Environmental Science

  • Studying the interrelationship between the components of environment
  • Carrying out impact analysis and environmental audit
  • Preventing pollution from existing and new industries
  • Stopping the use of biological and nuclear weapon
  • Managing unpredictable disasters
• Environment is not a single subject. It is an integration of several subjects that includes both science and social science. To understand all the different aspects of our environment, we need to understand biology, chemistry, physics, geography, resources management, economics and population issue.
• The scope of environmental studies is extremely wide and covers some aspects of nearly every major discipline.
• We're in a world where natural resources are limited. Water, air, soil, minerals, oils, the product we get from the forests, grasslands, oceans and from agriculture and from livestock are all the part of our life support system. Without them, life itself will be impossible.
• As we keep on increasing in number the quantity of resources each of us uses also increases. The earth cannot be expected to sustain this expanding level of utilization of resources. Added to this is misuse of resources. We waste or pollute large amount of plastic that we discard after the single use. We waste large amount of food, which is discarded as garbage.
• Air pollution leads to respiratory diseases. Water pollution leads to gastrointestinal (GIT) disorder. And many pollutants are known to cause cancer.
• Improving this situation will only happen if each of use begins to take actions in our daily lives that will help preserve our environmental resources. We cannot expect government alone to manage the safe guarding of our environment nor can we expect other people to prevent environmental damage. We need to do it ourselves.
• The more population we have, the more environmental issue we face.
• Environmental Auditing


  An environmental management tool for measuring the effects of certain activities on the environment against set criteria or standards.
• Reasons for undertaking an environmental audit

  • Environmental legislation
  • Pressure from customers
  • Reducing operating costs
• Environmental Auditing is carried out when a development is already in place, and is used to check on existing practices, assessing the environmental effects of current activities.
• Environmental Impact Assessment is carried out before the project, to assess the environmental effects of the proposed development.
• The International Organization for Standardization (ISO) has produced a series of standards in the field of environmental auditing to guide organizations and auditors on the general principles common to the execution of environmental audits.
• Environmental Review


  Determines which performance standards should be met, and covers all known environmental issues with or without explicit standards to measure performance. It is done before developing environmental management systems or before and after any significant changes in operations or practices, and covers wherever the business could have an environmental impact in the life of the product.
• Environmental Audit


  Verifies performance against standards, and only covers issues for which standards exist. It is done regularly and on a pre-planned cyclical basis, and usually has well-defined geographic boundaries.
• Environmental auditing began in the USA in the early 1970's, when industrial companies developed environmental auditing programs as internal management tools to help review and evaluate the status of the company's operating units and check compliance with environmental laws and regulations.