Vidyan Bio

Municipal Waste ...

more commonly known as trash or garbage — consists of everyday items we use-and-throw, such as product packaging, grass clippings, furniture, clothing, bottles, food scraps, news papers, appliances, paint and batteries. This comes from our homes, schools, hospitals and business.

Urban India...

generates over 50 million tons of Municipal Solid Waste (MSW) per year at an annual increase of about 5% ,as per current estimates. In addition to this, we generate over 38 billion litres of Municipal Liquid Waste (MLW) per day, of which less than 30% is treated before being released into fresh water bodies or the sea.

Conventional MSW treatment...

in most Indian cities, involves dumping solid waste with minimum sorting, in to open land fills. This practice, however, is prohibited by the statutory requirements of the Municipal Solid Waste Rules of 2016, as set by the CPCB. Waste processing, if at all practiced, comprises of composting, biogas production and palletisation as refuse-derived fuel (RDF).

Impact of waste dumping...

on the environment and human health is considerable. Landfills are the world’s third largest anthropogenic emission source,accounting for about 12% of all methane emissions in the world. Incidences of ground and surface water pollution, toxic air emissions, wind-blown litter, odour, firehazards, incidents with pest/rodents and increased greenhouse gas (GHG) emissions are all leading to substantial damage.

Problem with treating MSW...

include a paucity of cost-effective and sustainable processes, capable of handling the large volumes of waste generated in our country. Specifically, for solid waste, methods involving incineration of waste or refuse-derived pellets are capital and energy intensive while also resulting in toxic emissions. Biological treatment methods are inefficient and produce secondary effluents which require further treatment.

Conventional MLW treatment...

employ different technologies like activated sludge process (ASP), oxidation ponds (OP), up-flow anaerobic sludge blanket reactor (UASB), sequencing batch reactor (SBR) and other similar processes, in sewage treatment plants (STP) in India. Yet, STP inefficiencies ensure that a large part of this sewerage continues to be dumped directly into water bodies, polluting nearly three-fourth of India’s surface water resources.

Sewage treatment problems...

are often a result of the inefficiency of biological treatments which produce secondary effluents that require further action, both technical and financial. Additionally, a dearth of capacity and/or total number of STPs in the country, results in unsafe disposal, contaminating land and drinking water. Until a substantial scale-up in capacities is achieved, the sanitation chain will remain incomplete and the risk to health ever-present and severe.

Our Solution

Vidyan offers state-of-the-art Waste-to-Energy technologies that generate energy in the form of biogas and/or bio-oil, while recovering nearly all the water from municipal waste, both solid and liquid. There are currently three processes on offer in the VBC bouquet, including, a liquefaction technology, an algal waste water recovery technology and a novel anaerobic digestion technology to treat municipal waste.

MSW Liquefaction technologies

Vidyan through its affiliates offers a unique catalytic liquefaction (CTL) technology, which converts wet and dry municipal solid waste into a high density, Refuse-Derived Liquid Fuel (RDLF). The technology employs a patented, recoverable and reusable liquid catalyst which converts nearly 80% of feedstock waste into RDLF in a single pass. RDLF can then be used to generate heat and/or power, at one-third the capital cost of conventional WtE fuel like RDF.

Key benefits of CTL

The patented and indigenously decorated catalyst employed in the CTL process, results in the complete breakdown of complex organic molecules and allows the carbon to be densified for near 100% carbon recovery in the form of high density ‘bio-crude oil’. The oil generated in the process being ash and moisture free can be directly utilized for heat/power generation or can be further processed into bio-gas by anaerobic digestion.

Algal Photobioreactors (A-PBR)

Our affiliates have developed highly efficient and low-cost photobioreactors that quickly convert sewage into near potable water. Using specially acclimatized algae, that grow upon atmospheric carbon and (organic/inorganic) pollutants from sewage, this technology produces clean water while also cleaning up the air.

Key benefits of A-PBRs

The technology has been optimised for pollutant removal in minimal time and is capable of complete treatment of sewage water with high algal biomass production. Sequestration of carbon dioxide by algae demonstrates two-pronged advantage of air purification as well as water treatment. The technology is able to operate continuously with a low area foot-print.

Rapid AD Technology

Our affiliates have upgraded the popular but inefficient anaerobic digestion technology, to a state-of-the-art WtE process, where in any organic feed stock, including MSW, liquefied MSW or algal biomass from MLW treatment, can be converted into biogas in the shortest possible time recorded. It also has a high rate of carbon-to-carbon conversion, which combined with low residence times, results in a low capital costs and produces no antecedent foul smells.

Key benefits of Rapid AD Tech

Rapid digestion, due to high carbon-to-carbon conversion efficiency, results in improved biogas generation in bio-digesters whose volumes are ten times smaller than conventional digesters. Due to the liquefaction, the digester does not produce secondary waste nor any foul smell. The technology has the potential to be a distributed model for piped or packed bio-CNG distribution in local areas/townships.