Transcript Slide 1

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
Solution:
Public
Transport
Heat
Scrubber
Biomethane
Industry
Biogas
Anaerobic
Digestion
Digested
sludge
Compost Tree
Nursery &
potting soil
High Rate Algae
Oxidation Ponds
Organic
fertilizer
Sweet sorghum Horticulture
& biofuel crops and nursery
Bioprocess
Plant for the
extraction of
oils, biodiesel,
nutracueticals,
metabolites &
ß-carotene
Worm Biomass
Vermi-composting
mixed fraction
33.3 tons/day
Composting
Vermi Tea
Agriculture and
horticultural
Vermicastings
Agriculture and
horticultural
Grade A Compost Agriculture and
horticultural
Electricity
1.2MW
Garden Refuse
82.2 tons/day
woody fraction
36.6 tons per day
Aquaculture & chicken
feed
Grid (REFIT)
& Industry Backup
Power
Heat
2.1MWh
Gassifier
Generator
Chipper
Abattoir Waste
10 tons/day
Macerator
Stabalised Sludge
15m3 per day
4 tons/day solids
leafy fraction
12.3 tons/day
Pasterurizer
Biogas
Food Waste
17.7 tons/day
(future)
Continuous Stirred
Tank Reactor (CSTR)
Sludge
15m3/day
Macerator
Pasterurizer
Dewatering
Supernatent
1612m3/day
Waste Activated
Sludge (WAS)
2000 m3/day
Sludge
Concentration
Concentrated Sludge
403m3/day
Humus tank
Trickle Filter
Biogas
Second Creek
Waste Water
8000 m3/day
High Rate Algal Ponds
(HRAPs)
Sludge
15m3/day
Upflow Anaerobic Sludge
Blanket (UASB) Reactor
for Domestic Waste Water
High Rate Algal Ponds
(HRAPs)
Reverse
Osmosis
Plant
Biogas
Sludge
15-28m3/day
Potable
water
Filtration
West Bank
Waste Water
8000 m3/day present
15000 m3/day future
Algal
biomass
Storage
for industry
Upflow Anaerobic Sludge
Blanket (UASB) Reactor
for Industrial Waste Water
Municipal
Mains
Supernatent
Sludge
Concentration
Stabalised Sludge
3-5.6m3/day
Sludge drying &
storage
Heavy Metals
Testing
Mixing
Pasterurizer
Green
scorpions
investigation
Disposal to
landfill
fails DAFF
standards
meets DAFF
standards
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
10Ml/day wastewater diverted
from hoodpoint marine outfall
pipe requirements 4km of
160mm pipe & 150kW pumpset
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