To find the design flow in sanitary sewer the following steps are followed; 1. Forecast the design population (P) of the area; 2. Find the sewage flow per day by multiplying population with flow per day per capita of sewage.
Mainly it is divided into two two waste disposal methods. Conservancy System/Method Water Carriage System/Method 1. Conservancy System This type of waste disposal / refuse are collected separately and disposed off. A. Garbage is collected separately in dustbins and conveyed by covered carts or lorries to suitable place. The combustible and non-combustible garbage is sorted out.…
It is the system and infrastructure of collecting, treating and disposal of sewage. There are three types of sewerage systems. Separate System, Partially Separated System & Combined System. Separate Sewerage System.
Manholes are masonry or RCC chambers constructed at suitable intervals along the sewer lines for providing access into them. They are used to carry out inspection, cleaning and removing obstruction in the sewer line.
Sanitary Engineering is the ranch of public health engineering dealing with collection, conveyance, treatment and disposal of wastes, Sewage is the waster or foul water of the community conveyed by sewer
Sewage treatment process is the combination of physical and biological process with chemical process occasionally applied additionally to bring the sewage to such a quality that it is not harmful to human health and environment.
It consists of removal of floating material (like dead animals, tree branches, papers, plastics, wood pieces, vegetables peels etc) and also the heavy settleable inorganic solids (grit etc). Preliminary treatment includes: Screening, Comminutors, Grit Removal, Skimming Tank etc
Primary Treatment of Wastewater is a plain sedimentation process to remove suspended organic solids from the sewage. Chemical are sometimes used to remove finely divided and colloidal solids.
The secondary wastewater treatment is required to remove the soluble and colloidal organic matters which remain after primary treatment. As it is mostly biological process also called biological treatment.
Trickling Filter also known as percolating or sprinkling filter is like a well having depth up to about 2m and filled with some granular media. The sewage is sprinkled over the media which percolates through filter media and is collected through the under-drainage system.