Mr. Ludo Diels IEWP @ 2nd India-EU Water Forum @ World Sustainable Development Summit 2016. 7...
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Transcript of Mr. Ludo Diels IEWP @ 2nd India-EU Water Forum @ World Sustainable Development Summit 2016. 7...
2nd INDIA-EU WATER FORUM & WORLS SUSTAINABLE DEVELOPMENT SUMMIT
INDIA- EU WATER PARTNERSHIP
7 October 2016
02/05/23 2© 2010, VITO NV
ANDICOS™
INDIAN WATER QUANTITY AND QUALITY
Water quantity
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» Changing precipitation and glacier melt» Large periods of draught» Big uncertainties » Agriculture water demand from 630 km³/yr in 2010 to 1450 km³/yr in 2050 (Gupta & Deshpande)
Water quality: pollution + waste» Ganga delivers one fourth of of India’s water resource» Home of more than 400 million Indians» Pollution
» Tanneries» Sugar mills + distilleries» Cotton and textile» Battery» Fertilizers» Runoff nutrients & pesticides» Human waste » Domestic wastewater
WATER CHALLENGES IN INDIA
» Need for water recycling
» Need for organic matter removal from the waste water
» On longer term need for nutrient recovery (especially for irrigation)
» Water quality will not improve if waste is not treated properly as well
» Municipal solid waste is mostly landfilled (big problems)
» MSW contains to 55% organic waste (mostly kitchen waste)
It is a wastewater problem and a WASTE problem
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N. Devi, CAU, Imphal
CURRENT APPROACH SEWAGE TREATMENT
» Sewage mixed with rainwater low in organics» Aerobic treatment: aeration for oxygen input
» Energy intensive (15 - 30 kWh per person per year)» Large production of sludge (extra cost)» No nutrient recovery
» Expanded with tertiary – quaternary treatment» Large emission of greenhouse gases
Aerobic sewage treatment at a high cost
CODeff
HeatOxidation
Energy
50%
Excesssludge
CO2
Cell synthesis
50%
Organic matter + O2
H2O
SUSTAINABLE WATER TREATMENT
» New technologies with reduced energy demand » Alternative energy efficient treatment concepts: from energy consumption to
production
Why not from aerobic treatment to anaerobic treatment?
CODeff
Heat
Organic matter
Oxidation
Cell synthesis
Energy
90%
10%
CH4
Excesssludge
CODeff
HeatOxidation
Energy
50%
Excesssludge
Aerobic
Anaerobic
CO2
Cell synthesis50%
CO2Organic matter + O2
H2O
Aerobic treatment Anerobic treatment
APPROACH
» COD sewage: 0.1 – 0.5 g/l» Fermentative processes: > 5 g/l required
Enrichment of sewage water with energy and carbon-rich streams => ‘Andicos™’
Alternative water treatment system with broad offer of energy recovery systems
Andicos™: Anaerobic Digestion by Combining Organic Waste and Sewage
Sewage does not contain enough COD to allow anaerobic treatment
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- Concentrate via membranes- Enrich with organic matter- Combine both
TWO UNIQUE AND CRUCIAL STEPS 1. Concentration of sewage by membrane filtration
8
Sewage water100%
Concentrate10%
Permeate90%
Andicos™
321
1 2
3
ORGANIC WASTE PRETREATMENT
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» All-in-one system developed by EUROPEM nv to prepare homogeneous feed material for anaerobic digester from:
» Solid kitchen waste containing:» organic waste» sand and sediments» paper, plastic, fat,
floating elements» (Concentrated) sewage sludge
» Specific Advantages:» Compact system, arranged in a container» Upstream sorting and/or separate
collection of waste can be eliminated» Increased biogas yields
2. Robust waste fractionation and pretreatment system
ANDICOS™ CONCEPT
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concentrate
Clean water
ECOLOGY AND ECONOMY OF ANDICOS™
Integration of technology into a new concept adapted to the local situation and turning costs into benefits
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» No solids discharge to the river» Water produced of a primary quality can further be recycled or directly used in
irrigation» Less BOD to the river
» This will rejuvenate the resilience of the river» River resilience will start cleaning of micropollutants
» Potential for Si-based algae to grow and to take up as well nutrients leading to CO2 capture and more O2 production (extra advantage of Himalyan rivers)
» No greenhosue gases from landfills» Energy production and no consumption (> 60% reduction)» Heat produced is used to dry the organic waste» Much less maintenance costs (due to energy production)» Already proved in Vietnam
02/05/23 12© 2010, VITO NV
WATER
Our Global Common
Collaboration between VITO, IonExchange and Europem-India
Contact: [email protected]