Sewage water treatment is very necessary for the environment and human health

Sewage is generated by residential, institutional, commercial and industrial establishments. It includes household waste liquid from toilets, baths, showers, kitchens, sinks and so forth that is disposed of via sewers. In many areas, sewage also includes liquid waste from industry and commerce. The separation and draining of household waste into greywater and blackwater is becoming more common in the developed world, with greywater being permitted to be used for watering plants or recycled for flushing toilets.

Sewage removal is essential to ensure that the receiving water into which the effluent is ultimately discharged is not significantly polluted.  However, the degree of sewage water treatment required will vary according to the type of receiving water. Thus, a very high degree of treatment will be required if the effluent discharges to a fishery or upstream of an abstraction point for water supply. A lower level of treatment may be acceptable for discharges to coastal waters where there is rapid dilution and dispersion.

Sewage water treatment is the process of removing contaminants from wastewater, including household sewage and runoff (effluents). It includes physical, chemical, and biological processes to remove physical, chemical and biological contaminants. Its objective is to produce an environmentally safe fluid waste stream (or treated effluent) and a solid waste (or treated sludge) suitable for disposal or reuse (usually as farm fertilizer).

Sewage can be treated close to where the sewage is created, which may be called a "decentralized" system or even an "on-site" system (in septic tanks, biofilters or aerobic treatment systems). Alternatively, it can be collected and transported by a network of pipes and pump stations to a municipal treatment plant. This is called a "centralized" system. Although the borders between decentralized and centralized can be variable. For this reason, the terms "semi-decentralized" and "semi-centralized" are also being used.

Dumping sewage into water bodies, such as rivers or lakes, creates a human health hazard but can also negatively disrupt the river and lake ecosystems. The sewage contaminates the water, spreads disease, and leads to environmental degradation. Therefore Sewage water treatment is very necessary for the environment and human health.

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Sewage water treatment is very necessary for the environment and human health. Trends and history around the world have shown that the early provisions of sanitary facilities were mainly health driven. This remains the same in many current developing and poor countries. The more developed and rich nations emphasise sewage treatment more for environmental protection. To know more insights visit our http://www.questepa.com.