How the sewage generated in your house or apartment is disposed off ?

Explanation

(i) Sewage or domestic wastewater or municipal waste water that is produced from a community of people.
(ii) It consist mainly of grey water from sinks , tubs , showers , dish washers and clothes washers , black water - the water used to flush toilets combines with human waster , soaps , detergents , toilet paper , etc.
(iii) Sewage usually travels from a buildings plumbing either into a sewer , which will carry it elsewhere or into an onsite sewage facility.
(iv) In many developing countries the bulk of domestic and industrial wastewater is discharged without any treatment or after primary treatment only.
(v) In the primary treatment the process of removing contaminants from wastewater and produce treated wastewater that is safer for the environment .
(vi) A by - product of sewage treatment is usually a semi - solid waster or slurry called sewage sludge. The sludge has to undergo further treatment before being suitable for disposal or application to land.
(vii) The first part of filtration of sewage typically includes a bar screen to filter solids and large objects which are then collected in dumpsters and disposed in landfills.
(vii) The second part removes dissolved and suspended biological matter. The secondary treatment is typically performed by indigenous water borne micro - organisms in a managed habitat.
(viii) Teritary / third part is ejection into a highly sensitive ecosystem . Treated water is sometimes disinfected chemically or phsically prior to discharge into a stream , lagoon etc. It can be used for ground water recharge as it is sufficiently clean.