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“Decentralised” Systems
Agri-waste /
Garden waste
/ Forestry
waste
Transport by
burning diesel Distribution to end
users - T&D lossesRemote
end user
Urban and
industrial
organic wasteTransport by
burning diesel
Processing into
Energy or fertilizer:
Industrial Operation
with industrial
overheads
Distribution to end
users - T&D losses
Remote
end user
“Micro-Scale” System
Organic waste
of any type
Processing on /
nearby Location:
Micro-scale
End users on
location /
nearby
Samuchit Technologies for
Recycling Organic Waste
Samuchit Household Biogas Plant
Balcony Model:
Size: 0.5 m3 digester, 0.35 m3 gas holder
Capacity: up to 1 kg kitchen waste, daily.
Quantity of gas produced: up to 0.5 kg biogas,
capable of replacing 100-150 gm of LPG, daily.
Terrace Model:
Size: 1 m3 digester, 0.75 m3 gas holder
Capacity: up to 2 kg kitchen waste, daily.
Quantity of gas produced: up to 1 kg biogas,
capable of replacing 200-300 gm of LPG, daily.
Samuchit Domestic Biogas Kit
(for 0.5 – 5 cubic meter biogas plants)
• Additional items to be
purchased by client:
• Two water storage tanks of suitable
sizes
• PVC pipes for inlet and effluent • PVC pipes for inlet and effluent
outlet
• Gas pipe
• Hand/electric mixer for pulping of
organic waste
Kit includes connectors and valves for
inlets and outlets and biogas stove.
Several companies are supplying readymade household biogas
plants based on various designs.
Institutional/Commercial Biogas Plant
• Capacity: 10 m3 Digester (plastic or masonry tank )
• 7.5 m3 gas holder (plastic tank)
• Pay back period: 3-4 years, for commercial LPG
replacement
• Operating cost: Electricity for Food Pulper, 1 hp
• Labour 2 hr/day (at actual)
• Gas production: 2-3 kg LPG eq/day
• Requirements:
• Area open to sunlight throughout the day 3 m x 3 m
• Water ~ 100 lit/day (spent slurry can be recycled)
• Feedstock: Food waste, any green plant matter,
pulped, up to 50 kg
• Several companies providing similar services across
India. Well established technology.
Samuchit Community Level Biogas Concept
Processing Stage 1: Low
cost, low tech, minimal
‘dirty’ work
Organic Acid feedstock for
household biodigesters –
to be soldHousehold waste +
green organic waste ‘dirty’ workto be sold
Organic acid:
Standard
Feedstock
Biogas for cooking:
Standard Quality
Biodigester
Organic acid:
Standard
Feedstock
Biogas for cooking:
Standard Quality
Biodigester
green organic waste
Advantages
• This system will work even if the waste segregation percentage is 70-
80%. Both garden and kitchen waste can be treated.
• The common processing is anaerobic - no danger of rats, flies,
mosquitoes, etc.
• The household level biomethanation uses a ‘clean’ and standard
feedstock – no issues of smell, reaction going bad, etc.
• The waste collector gets paid for handling waste + selling the
feedstock – livelihood for urban poor.
Advantages
• Reduction in LPG consumption at the household level contributes
even more to the ‘Give it up’ campaign than just giving up subsidy.
• Huge saving for the municipality in terms of space, diesel, manpower,
etc.
• Contribution of the municipality towards reducing GHG emissions –
contributes to India’s Intended Nationally Determined Contribution
(INDC) to combat global warming.
• Possibility of monetising organic waste if a housing complex
‘purchases’ waste from hotels, etc to fulfill its cooking energy need.
Implementation Strategy
• Architects must provide space for household biogas plant in the
plan for approval by municipality.
• Municipality may decide rates for ‘selling’ organic waste and the
organic acid feedstock.
• Municipality should provide the hardware free of cost and other
incentives such as rebate in municipal tax.
• A good waste management strategy must involve technology +
lifestyle change. People’s participation is the key to a
sustainable solution to the problem.
Waste Biomass to ‘Charcoal’
• Local production units for
converting waste biomass into
char
– Portable charring kilns
– Hand or motor operated
briquetting machine for converting
char powder into briquettes
– Feedstock (for char powder): Leaf – Feedstock (for char powder): Leaf
litter, dry weeds, dry grass, dry
bushes, agri waste, etc.
– Feedstock (for charcoal): dead
wood, wood waste, bamboo waste,
coconut shells, etc.
Samuchit Sarai System
ASHDEN AWARD FOR RENEWABLE ENERGY, 2002
Medium size model of
Sarai Cooking System
Small Size: Cooks food for 2-3 persons using 100 g charcoal/char briquettes.
Medium Size: Cooks food for 5 persons using 100 g charcoal/char briquettes.
Large Size: Cooks food for 10 persons using 200 g charcoal/char briquettes.
Jumbo Size: Cooks food for 25-30 persons with 500 g charcoal/char briquettes.
Features of SaraiAvailable in four sizes / capacities
A clean and efficient charcoal burning device
• Total fuel saving/kg of food cooked: 77% less than cooking on ordinary charcoal stove
• Particulate and CO emissions within acceptable safety limits
Already about 100,000 units sold, growing demand from all over the world.
Some of the Food Items cooked in Sarai System
� Rice � Pulses � Vegetables � Meat � Eggs
� Idli � Dhokla � Cake � Chicken � Fish
• Particulate and CO emissions within acceptable safety limits
• Distributed to BPL houses in several parts of Maharashtra State, under 15% funds for BPL
quota by gram panchayat.
• Distributed through JFM Committees in various forestry divisions of Maharashtra state.
• Goa State government declared subsidy for Sarai – Large.
• CONTROL
• 4 KGS BIOCHAR
COMPOST
Biochar as Soil Amendment Agent
• 8 KGS BIOCHAR
COMPOST
Biochar Urinals
TAPPING NITROGEN FROM
URINE OF ANIMALS AND
PEOPLE USING BIOCHAR
Other Biochar Applications
BIOCHAR BRICKS, GREEN BUILDINGS
WATERLESS CLEANING
Implementation Strategy
• Ward level (or smaller) processing units. Can be in a garden space.
• All garden waste (sweepings from premises and also road sides) to be
brought in for processing. Some garden waste can be first charred
and then transported.
• Can be absorbed in the same garden/distributed to the societies from • Can be absorbed in the same garden/distributed to the societies from
where garden waste is being collected.
• OR
• The contract of processing can be given to a local youth group/SHG
who can be allowed to make saleable products.
• The system will work the best, if the residents are encouraged to
not litter roads and premises with plastic and other non-
biodegradable waste – easier to achieve ward by ward.
Charring Vs Composting
• Char can be converted into a variety of products – including soil improvement agent.
• Less time, less space, and less skill involved in the process of conversion.
• Greater gains in terms of climate change through carbon sequestration. sequestration.
• Composting is convenient when dealing with huge quantities of bio-waste for reducing size, for easy handling etc. From botanical perspective, non-composted biomass added to soil is more beneficial to plants.
• Composting can handle both garden and household organic waste, charring is possible only with ‘dry’ biomass waste.
Thank You!
Contact:
020 25460138020 25460138
www.samuchit.com
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