SBT
Soil to Weathered Rock Media
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This technology has been developed by IIT, Mumbai. SBT engages three fundamental process of Nature Photosynthesis, respiration and mineral weathering. This is achieved by soil micro-organisms which are regulated by soil micro-organisms (geophages earthworms). Primary and Secondary treatments are achieved in the SBT. The organic & inorganic in waste water is consumed and converted into useful by-products and simultaneously water of desirable quality is produced. SBT thus removes BOD, COD, Ammonia, Nitrogen, Nitrate nitrogen suspended solids bacteria, colour, odour. The SBT is ideal for treating waste water less than 5 MLD.
Soil Bio Technology (SBT) is an efficient process of synthesis to completely utilize solids and liquids, [tis economical in capital and recurring costs. It has a simple looking construction, free from conventional electro-mechanical systems which are prone to breakdowns. It efficiently integrates the physical, chemical and biological processes into a single aerobic system based on natural biophysical and bio-chemical principles. A specified additive is added’ in a predefined proportion. SBT is a synthesis process which harnesses the energy, carbon and other elements of the waste and converts them to precious “Bio-energy” products like vegetation, energy rich soil, complete Bio-fertilizer and water. It offers a bacterial removal of approx. 99.99 % thus ensuring a healthier environment in a sustained manner without any side effects.
The technology combines sedimentation, infiltration and biodgradation process. It works with formulated geological environment wherein fundamental reactions of nature, namely respiration, photosynthesis and chemical mineral weathering are responsible for bioconversion of sewage. Suitable mineral constitution, culture containing native microflora, geophagus worms and bioindicator plants are the key components of the media. Bioconversion takes place by bacterial processing of organics and oxidisable inorganics via natural oxygen supply wherein mineral weathering reaction serves to regulate pH, while green plants serve as bioindicators. The high toxic potential, the neutral pH together with ecology of environment leads to significant reduction in the organic matter, nutrients and pathogens from wastewater.
SBT can be designed to treat any type of wastewater provided the wastewater is not saline (i.e. having total dissolved solids (TDS) = 1000 mg/L typically) and as long as the water is not toxic to micro organisms. SBT process requires temperature, between 20-45 degree Celsius (in low / very low temperature a greenhouse infrastructure appropriate for the local conditions can house SBT plant. The process can also work at high ambient temperatures.
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