Cage Rotor
Cage Rotor
One or more mechanical surface aerators with horizontal axis, generally known as cage rotors are attached to the side of the ditch. Cage rotors generally resemble a large circular brush.
The cage...
ADVANTAGES AND DISADVANTAGES OF TRICKLING FILTER
Advantages of Trickling filtration plant
Simple and reliable process that is suitable in areas where large tracts of land are not available for a WSP treatment system
Effective in treating high...
SECONDARY TREATMENT
SOLIDS IN SEWAGE
The solids present in the sewage are of two types viz.,
Organic solids, and
Inorganic solids.
Organic solids are the substances derived from living things like produces from plant and...
ON-SITE SANITATION
Commonly, on-site sanitation is equivalent to ‘household latrine’, but may also include facilities shared by several households living together on the same site. The more commonly known on-site...
DESIGN OF SEWAGE SYSTEM
SEWERAGE SYSTEM
The underground conduit for the collection of sewage is called sewer. A network of sewers and appurtenances for the collection and conveyance of sewage generated from each of the properties...
Sludge Disposal
The sludge which is found in the bottom of a sedimentation tank in water treatment plant is primarily composed of water. The solids in the sludge are mainly flocs, excess coagulant, such as alum. Alum sludge...
Zones of Sedimentation Basin
Sedimentation basins have 4 zones
1. The Inlet zone,
2. The Settling zone,
3. The Sludge zone, and
4. The Outlet zone.
Each zone should provide a smooth transition between the zone before and the zone...
Coagulation and Flocculation
Types of Suspended Particles in WATER
There are three types of particles which can be found in water in suspension and cause turbidity. In the order from smallest to largest, these particles are chemicals in...
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