Object of sewege desposal

most important for sewage disposal

1. Topic : “ OBJECTS OF SEWAGE DISPOSAL ” Subject Name: WSSE Subject Code:3360603 Semester: 5 th Topic : Objects of Sewage Disposal Prepared by: Bhavesh Hathila Civil Engineering Department Government Polytechnic, Zhalod Road, Dahod

2. Index Introduction Sanitary works Objects of sewage disposal Methods of sewage disposal Methods of sewage collection or sanitation Flow chart of sanitary system

3. Introduction The term sewage used to indicate the liquid wastes from the community. It includes sullage, discharge from latrines, urinals, stables, industrial wastes, and storm water. sewage have three characteristics Physical characteristics. Chemical characteristics. Biological characteristics. Sewage:

4. Sanitary works ‘Sanitary engineering’ starts at the point where water supply engineering ends. A sanitary works and waste water management can be broadly classified as: Collection work Treatment work Disposal work Disposal works: the treated or untreated waste waters are disposed off in various ways by irrigation fields, discharging in to rivers, seas, etc. the last stretch of trunk sewer carrying sewage to the disposal point is known as out full sewer.

5. Objects of sewage disposal The various objects of sewage disposal are : To render sewage inoffensive without causing nuisance or order. To dispose off human excreta to a safe place , before it starts decomposing and causing insanitary condition in the locality. To take out all kinds of waste water from the locality, immediately after it production so that mosquitoes, files, bacteria etc. May not breed in it and cause nuisance.

6. To reduce danger to the public health by possible contamination of water supplies, bathing areas etc. in case sewage is left undiposed. Final disposal of sewage on land or in near by water coursers after some treatment so that receiving land or water may not get polluted. As far as possible the fertilizing elements of sewage may be used in growing crops through sewage farming and getting some income. In unsewered areas, treatment of sewage from individual houses, should be done by septic tank and the effluent should be disposed off.

7. Methods of sewage disposal Spreading on the farmland Dumping Land filling Sludge laggoning Disposing in sea Incineration

8. Methods of sewage collection or sanitation The method of collection adopted are mainly of two types: Conservancy system(Dry system) Water carriage system [Flow chart of sanitary system]

9. Thank you