Sewage Treatment Plant

 Sewage can be defined as the polluting residue of the disposals from houses, offices, industry, factories as well as other kinds of public outlets. These disposals include waste and wastewater and the very process of eliminating contaminants from the disposals is referred to as sewage treatment. Sewage treatment plants take to physical, chemical & biological procedures for contaminant removal that ultimately leads to treated environmentally-safe wastewater. Sewage sludge is one of the most important by-products of sewage treatment which I a kind of semi-solid slurry. These treatment plants are a great aide in water recycling and the treated water can be used back for a number of tasks such as flushing toilets, harvesting or planting. 

The entire treatment process starts with a pre-treatment phase. It’s the stage which works to remove materials conveniently collected from raw wastewater so that they can’t clog or damage skimmers or pumps of primary sewage treatment clarifiers. These materials could be leaves, tree limbs, trash etc. The sewage water gets thoroughly strained to sift out large objects that are carried through sewage stream. An automatic mechanical raked-bar screen is the most common aide here, especially for modern sewage treatment plants. However, smaller plants might go for manual screening. The solids collected are disposed in landfills or else are incinerated. The pre-treatment phase generally comprises of grit removal.

In case of primary treatment phase, the sewage is flown through big tanks or “primary sedimentation tanks” or “primary clarifiers”. These big tanks help sludge to settle down & make floating materials like oil & grease to rise up to the upper surface for an easy skimming. The fundamental mission of primary sedimentation phase is to generate a homogenous fluid that can be treated biologically as well as a sludge which could be separately processed or treated. The primary clarifiers are designed with mechanical scrapers that continuously drive the gathered sludge to a hopper located at tank base. It’s from the hopper, the sludge is pumped to advanced treatment stages.

This phase is dedicated to thoroughly degrade biological parts of sewage – the very biological contents derived from food waste, human waste, detergent and soap. It’s the aerobic biological procedure that goes to treat settled sewage fluid in STPs. The process could be performed in several ways and in all the methods, protozoa and bacteria consume the soluble organic biodegradable contaminants & bind a fair share of lesser soluble fractions to floe. The secondary treatment processes could be suspended-growth or fixed-film.

It’s the final stage that aims to further enhance the quality of treated wastewater before it’s ultimately released to receiving environ. Kelvin Water Technologies is one of the most renowned STP specialists in India. Our trained and seasoned wastewater treatment engineers are always here to help you with any assistance regarding servicing & maintenance of sewage treatment plants – and that too at highly reasonable costs.