Grp Tank Process

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I.T.T.E SEPTIC TANKS PROCESS:

I.T.T.E sep!c tanks was originally designed to serve as a se0ling basin to separate scum and grit from the liquid. The effluent from the tank then was sent to a sewer or the soil for disposal

ALL NEW COMBINED SYSTEMOF ANAEROBIC CUM AEROBIC SEPTIC:

The clarification function of the tank was known, but the biological processes that partially digested sewage were discovered it is found that the organic solids in the wastewater decomposed if they stayed in the tank long enough. Therefore, the septic tank is designed to accomplish two tasks: (1) Clarification , (2) Treatment.

CLARIFICATION:

Clarification is a function of the detention time and the water extraction method. Solids settle out of the water based on size and specific gravity.Smaller lighter particles take longer to settle than heavier particles.Clarification also includes the removal of fats, oils and greases, which float to the surface along with soapsuds and “scum”.The variables of a septic tank are: size, shape, number of chambers, number and style of baffles and gas venting provisions.


TYPES OF SEPTIC TANKS :
  1. SIMPLE ANAEROBIC TANK
  2. ANAEROBIC CUM AEROBIC TANKSTREATMENT
TREATMENT :
Treatment consists of biological treatment by anaerobic digestion. Anaerobic treatment partially decomposes the organic matter into simpler compounds that can be treated further in the septic tank or discharged into the soil for aerobic treatment. Design and operational considerations for septic tanks include:
  1. Configuration
  2. Materials
  3. Structural integrity
  4. Water-tightness
  5. Size
  6. Appurtenances
  7. Operation and maintenance.
Process of Treatment System : 4 STAGE TREATMENT
  1. Solid Liquid Separa!on Chamber
    In this stage Solids will be se0led and allowing scum to float on the top surface and this process will take place by simple An aerobic process here 25 to 30 % BOD will be removed.
  2. Aera!on Process treatment Chamber
    In Second stage Aerobic Process will take place and with the PP packing media filtra!on system will help in a great way increases the surface contrac!on area and retain the micro organism to long enough to digest the organic substance to convert the solids in to liquid.
  3. In third stage the Liquid obtain from chamber 2 is to be passed towards upward gravity flow to obtain effec!ve clear liquid.
  4. In Fourth Chamber we collect the Clear Liquid and it can be pumped out to Garden use and it has connec!on to first chamber for recircula!on purpose to speed up the treatment process by closed system for effec!ve treatment system.
Configuration :

Efficient clarification takes time to complete because fats, oils, greases, and suspended solids travel slowly in water and may require hours to either float to the top or settle to the bottom.
The shape of the tank must be designed to maximize the detention time of the wastewater.
Surface area is more critical for settle ability than depth, so a shallow, wide tank is preferable to a deep, narrow tank if both have the same volume capacity. Shallow tanks are also easier to transport and install and poses less of a safety risk because the content level of the tank is not much deeper than the height of an average person.
An improperly configured tank will allow wastewater to “short-circuit” through the tank to the outlet. Short-circuiting can allow solids to migrate to the absorption field if the wastewater is not given sufficient time for the solids to settle out.