Packaged Sewage Treatment Plant

Packaged Sewage Treatment Plant

One type of system that combines secondary treatment and settlement is the cyclic activated sludge. Typically, activated sludge is mixed with raw incoming sewage, and aerated. The settled sludge is run off and re-aerated before a proportion is returned to the head works. The disadvantage of the process is that it requires a precise control of timing, mixing and aeration. This precision is typically achieved with computer controls linked to sensors. Such a complex, fragile system is unsuited to places where controls may be unreliable, poorly maintained, or where the power supply may be intermittent.SBR plants are now being deployed in many parts of the world.                                     Extended aeration package plants use separate basins for aeration and settling, and are somewhat larger than SBR plants with reduced timing sensitivity.

Most treatment plants are preceded by some type of pre-treatment device which will remove some untreatable matter and prevent it from entering the waste flow (plastics, rags, rocks, etc.). The three types of pre-treatment devices are: trash traps, bar screens, and comminutors. In addition, kitchen drains from food service operations should be discharged through a properly sized grease trap. Flow equalization may also be required in plants subjected to widely fluctuating hydraulic loadings. A flow equalization tank allows the flows coming to the plant to be held and pumped at a uniform rate to the plant.

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• Delivery Time: Immediately