Construction of Waste Stablization Ponds
1.Site Selection for Waste Stabilization Ponds. The site selection for locating Waste Stabilization Ponds system should consider the following factors: The area where the…
Category: Sewage Treatment
Secondary Facultative Ponds
Secondary facultative ponds, which receive settled wastewater (usually the effluent from anaerobic ponds) are 1.20 – 1.50 meters deep. They are designed for BOD…
Waste Stablinzation Ponds
Multi-cell WSP system comprises of three types of ponds Anaerobic ponds Facultative ponds and Maturation ponds. Usually a WSP system comprises a single series…
DESIGN CRITERIA OF AERATED LAGOON
Detention Time The basis of design Of aerated lagoon can be hydraulic retention time (HRT) as well as the mean cell residence time or…
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ADVANTAGES AND DISADVANTAGES OF WSP SYSTEMS
Advantages of WSPs are Lagoon systems can be cost-effective to design and construct in areas where land is inexpensive. They use less energy than…
Maturation Ponds
Maturation ponds (low-cost polishing ponds), which generally follow either the primary or secondary facultative pond, are primarily designed for tertiary treatment, i.e., the removal…
TYPES OF SEWERS
Need for Alternate Types of Sewers Installation of conventional sewerage system is not possible in many situations due to the following reasons: The per…
SEWERS DESIGN CRITERIA
Depth of Flow The sewers are always designed for the partial flow conditions. The purpose of maintaining partial flow in sewers is to maintain…
SELECTION OF PIPE MATERIALS
The following factors should be considered in the selection of pipe materials for sewers: Technical factors Length of pipes: Individual pipe lengths vary considerably…
CORROSION IN SEWERS
Causes for Crown Corrosion Bacteria in the slime under flowing sewage convert sulphates in the sewage into sulphides. Sulphides in the liquid make their…