how do we convert this into a resource?. is this really the best the we can do with r200million?
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How do we convert this into a resource?
Is this really the best the we can do with R200million?
Biogas to Electricity
Biogas powered vehicles, Sweden
5.3 Million Natural Gas Vehicles (NGVs)
In 2005 there were over
140,000 buses, 100,000 trucks, 5,100,000 cars
ScrubberWaste water
OFMSW
High Rate Algae Oxidation Ponds
Biogas
Anaerobic Digestion
Biomethane
Process
Water
Organic fertilizer
Sweet sorghum & biofuel crops
Horticulture and nursery
Bioprocess Plant for the extraction of oils, biodiesel, nutracueticals, metabolites & ß-carotene
Public Transport
Digested
sludge
Compost Tree Nursery & potting soil
Heat
Garden refuse
Industry
Solution:
Garden Refuse82.2 tons/day
leafy fraction12.3 tons/day
woody fraction36.6 tons per day
ChipperGassifier
Composting
Abattoir Waste10 tons/day
Food Waste 17.7 tons/day(future)
Generator
Continuous Stirred Tank Reactor (CSTR)
Pasterurizer
Dewatering
Heat 2.1MWh
Sta
balis
ed S
ludg
e15
m3 p
er d
ay4
tons
/day
sol
ids
Pasterurizer
Sludge15m3/day
Grid (REFIT)& Industry BackupPower
Electricity1.2MW
mixed fraction33.3 tons/day
Waste Activated Sludge (WAS)2000 m3/day
Sludge Concentration
Concentrated Sludge403m3/day
Second Creek Waste Water 8000 m3/day
Upflow Anaerobic Sludge Blanket (UASB) Reactor for Domestic Waste Water
Sludge15m3/day
Supernatent1612m3/day
West Bank Waste Water8000 m3/day present15000 m3/day future Upflow Anaerobic Sludge
Blanket (UASB) Reactor for Industrial Waste Water
Sludge15-28m3/day
Vermi-composting
Sludge Concentration
Supernatent
Stabalised Sludge3-5.6m3/day
Sludge drying & storage
Mixing
Heavy Metals Testing
Pasterurizer
meets DAFF standardsfails DAFF
standards
Vermicastings
Vermi Tea
Aquaculture & chicken feed
Worm Biomass
Trickle Filter
High Rate Algal Ponds (HRAPs)
High Rate Algal Ponds (HRAPs)
Filtration
Reverse Osmosis
Plant
Municipal Mains
Pot
able
w
ater
Grade A Compost
Agriculture and horticultural
Agriculture and horticultural
Biogas
Biogas
Biogas
Agriculture and horticultural
Green scorpions
investigation
Disposal to landfill
Macerator
Macerator
Algal biomass
Storagefor industry
Humus tank
10Ml/day wastewater diverted from hoodpoint marine outfall pipe requirements 4km of 160mm pipe & 150kW pumpset
2Ml/day waste activated sludge diverted from pipeline to hoodpoint marine outfall pipe, 800m of 160mm pipe no additional pumping
8Ml/day existing flows 2nd creek WW pump station, eliminate requirment for 220kW pump set
Garden Refuse
30 000 tons per year or biomass resource going to waste
Garden refuse
East London Generates 30000 tons per year (82.2 tons per day) of garden refuse at four Garden Refuse Transfer Stations (GRTS) which get transported to Roundhill Landfill.
• Divert 15% (4500 tons/a) of grass & fresh leafy fraction to biogas digester
• Divert 40% (12144 tons/a) of the mixed woody and leafy waste to co composting with digester sludge.
• Divert 45% (13356 tons/a) of the woody biomass to a 1.35MWe & 2.1 MWth gasifier CHP
Closing the Rural and Urban Loop in a Zero Waste Economy
Job creation, food security, energy & fuel security, environmental protection, and nutrient beneficiation
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