We provide professional septic tank cleaning for houses offices and hotels in Thrissur. A septic tank consists of one or more concrete or plastic tanks of between 4000 and 7500 liters (1,000 and 2,000 gallons); one end is connected to an inlet waste water pipe and the other to a septic drain tank. Generally these pipe connections are made with a T pipe, allowing liquid to enter and exit without disturbing any crust on the surface. Today, the design of the tank usually incorporates two chambers, each equipped with an access opening and cover, and separated by a dividing wall with openings located about midway between the floor and roof of the tank .Wastewater enters the first chamber of the tank, allowing solids to settle and scum to float. The settled solids are anaerobically digested, reducing the volume of solids. The liquid component flows through the dividing wall into the second chamber, where further settlement takes place. The excess liquid, now in a generally clear condition, then drains from the outlet into the drainage tank , also referred to as a leach field, drain field or seepage field, depending upon locality. A flow test is required prior to installation to ensure the porosity of the soil is adequate to serve as a drain field .The remaining impurities are trapped and eliminated in the earth, with the excess water eliminated through absorbing into the soil, through evaporation , and by uptake through the roots of trees. A piping network, often laid in a stone-filled trench, distributes the wastewater throughout the field with multiple drainage holes in the network. The size of the drain field is proportional to the volume of wastewater and inversely proportional to the porosity of the drainage field. The entire septic system can operate by gravity alone or, where topographic considerations require, with inclusion of a lift pump. Certain septic tank designs include siphons or other devices to increase the volume and velocity of outflow to the drainage field. These help to fill the drainage pipe more evenly and extend the drainage field life by preventing premature clogging .An Imhoff tank is a two-stage septic system where the sludge is digested in a separate tank. This avoids mixing digested sludge with incoming sewage. Also, some septic tank designs have a second stage where the effluent from the anaerobic first stage is aerated before it drains into the seepage field .A properly designed and normally operating septic system is o dour-free. Besides periodic inspection and emptying, a septic tank should last for decades with minimal maintenance, with concrete, fiberglass, or plastic tanks lasting about 50 years.
