Plastic Sewer The use of plastics for non-pressure sewer pipes is of comparatively recent origin and is still in the experimental stages. However, some countries, such as the Netherlands, Scandinavia, France, etc., have already begun to use plastic pipes for sewers of 250 mm dia and above on a moderate to large scale (15% to…
Brick Sewer Ancient times mostly bricks were used as a sewer material, However, they have now almost been replaced by concrete cement sewers. However, the brick sewer may still be used at places where the sewers are required to be constructed at the site, and if the ingredients needed for cement concrete sewers may not be…
Precautions to be Taken While Entering Sewers Various poisonous and explosive gasses are commonly found in sewers such as hydrogen sulphide (H2S), carbon dioxide (CO2) and methane (CH4) along with petrol vapours. These gases are produced largely when the sewage becomes stale and septic, which occurs more commonly in hotter climates. In addition to the…
Design of septic tank with soak pit for 30 users are as follows: Design of Septic Tank Assume, rate of water supply = 135 lit/capita/day. Quantity of water supplied = Per capita rate ⨯ Population = 135⨯30 = 4050 lit/day. Assuming that 80% of water supplied becomes sewage, we have Quantity of sewage produced…
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Septic Tank Septic tank is rectangular in plan and constructed with brick masonry over a concrete foundation. The length of the tank is usually 3 times the width. R.C.C cover with manhole is provided at the top of the tank. How does a Septic Tank work? Septic tank is just like a plain sedimentation tank….
Sludge Digestion Tank The decomposition of complex organic matters in sludge by the biochemical reaction created by anaerobic bacteria is termed as sludge digestion. The sludge can be digested by a sludge digestion tank or an Imhoff tank. ⇛ The sludge digestion tanks are generally circular in shape with a flat or hopper-shaped bottom. The tanks…
Combined Gravity And Pumping System In this system, the treated water is pumped and stored in an elevated reservoir, from where it is supplied to the consumer by the action of gravity. Thus, this method combines pumping as well as gravity flow. This system is fairly reliable. Read more: Function of Storage Reservoir 3…
