WHAT IS WASTEWATER? Wastewater is the combination of liquid or waterborne waste that leaves the toilets of homes, industrial or commercial facilities. In addition to these, surface, underground and rainwater may also be present. This is any water whose quality has been seriously impaired by anthropogenic influence. Contains waste from residential, industrial and commercial processes. Municipal water contains industrial wastewater, sewage and gray water. Gray water is water from sinks and showers. Large industries also produce wastewater. Wastewater may be a fancy term used to refer to water that has been negatively affected by human activities such as washing dishes, fertilizing crops, bathing, and flushing toilets. The pie chart above shows the percentage of waste water content. Wastewater consists mainly of water wasted by flushing toilets, which is highly contaminated with ammonia and urea. Secondly, wastewater consists of water wasted while cleaning your home which can consist of waste such as soaps and detergents. Thirdly, it is laundry waste and then there is water waste from using the bathroom and kitchen. COMPONENTS OF WASTEWATER: Contaminants may include:1. Water (above 95%), added during washing.2. Non-pathogenic bacteria.3. Pathogens such as viruses, bacteria, prions etc.4. Soluble organic material such as soluble proteins, fruit sugars, etc.5. Organic particles such as food, paper fibers, plant material, vomit etc.6. Soluble inorganic material such as ammonia, cyanide, road salt, etc.7. Animals such as insects, arthropods, protozoa, small fish etc.8. Gases such as methane, carbon dioxide, hydrogen sulfide.9. Hormones.10. Pharmaceutical products.11. Macrosolids like… the middle of paper… end with oxygen affinity. Wetlands use secondary and tertiary steps to clean wastewater and also use chemical and physical processes. Wetlands take less time and are also less expensive. TERTIARY (ADVANCED) TREATMENT The terms secondary and primary treatment have been used to essentially describe a degree of treatment; for example, the biological treatment and sedimentation of wastewater. Tertiary treatment was considered different from secondary treatment and is the advanced one. It includes the use of sand filters to separate solid particles from wastewater. Tertiary treatment was also considered as the treatment necessary to remove plant nutrients, mainly nitrogen and phosphorus. The improvement and enhancement of wastewater treatment processes and also the need to reduce environmental factors make the use of tertiary wastewater treatment important.