Veolia Water Outsourcing Waste Water and Energy Recovery Greg - - PowerPoint PPT Presentation
Veolia Water Outsourcing Waste Water and Energy Recovery Greg Turner Technical Director 23 rd April 2008 Veolia Environnement is the world leader in water services . Water and wastewater services management for local municipalities and
Greg Turner Technical Director 23rd April 2008
2
is the world leader in water services.
customers
3
Cost Control and
Economic Performance
Complying with
Regulations
Improving Brand Image
and Public Perception
Hygiene, Safety and
Quality Compliance
4
Distribution system management Water re-use & recycling Water source development Purified water Boiler facility management
Industrial water Sludge management & treatment Wastewater management Waste to energy Power generation & maintenance Facilities management Lighting, heating & cooling systems Waste transportation Liquid & dry waste management By-product recovery
5
A natural treatment method for organic waste Biological decomposition of organic matter in an environment without air supply Production of gas as recoverable energy (biogas) Used for organic waste with a high carbon content (soluble COD) Low volume sludge production Undigested matter can be dried and used as biomass fuel Residual organic matter used for composting and landspreading
6
Anaerobic digestion processes are used in the treatment of biomass from waste effluent, sludge, and organic matter produced by industry. The process is a very compact and efficient proven process can reduce loads of COD by 70-90% produces significantly less volumes of sludge than aerobic processes reduces the risk of odour can be applied to concentrated liquid or semi-solid organic wastes with high dissolved COD loads (4.5 to 100g/l) including: Sludge from aerobic treatment of industrial effluent Organic waste from industrial activity Waste from catering service Sludge from municipal wastewater Municipal waste
7
A g r i c u l t u r e w a s t e manure liquors
waste greases c
r
u c t s Effluent
BIOGAS
60-75% méthane (CH4)
Food Processing Plant
Digestion (35°C) Activated sludge Sludge Digestion / co-digestion Sludge
Non reusable portion: Flaring Combustion Engine COGENERATION Other usages:
ELECTRICITY (yield: 30-40%) Thermal Energy (yield: 45-50%) Heated Water @ 90°C RE - CYCLING Heating of Digestor Usage in Plant Process Cleaining of Plant
1 2 3
boiler
Treated Water Treated Water
4
Sales to local Power Grid SELF - USAGE Carbon Credits (CO2) RESIDUALS soil fertilization Heating
8
Anaerobic Digestion Process gives following main benefits High efficiency Production of a sludge with high fertilizer value (PKN) Renewable energy production: biodegradable organic matter is converted into biogas 70 – 80% methane (CH4), a source of “green energy” Cogeneration to thermal or electrical energy (non fossil fuels) Greenhouse gas reduction. CH4 recovery provides carbon credits allocations if sites consumption > 20 MW/yr
9
Cost savings in line with increased energy prices Attracts Government Incentive Programmes (renewable energy) Carbon Credits Reduction of Industrial Environmental Impact Demonstrates Sustainable Development Policy A Solution to Local Limitations on Organic Waste Disposal Wastewater + Organic Waste Non Fossil Energy
10
Royal Brewery, Manchester John Smiths, Tadcaster Carlsberg Heineken Danone Slaughter Houses Dairies Juice Manufacturers
11
One of the world’s leading brewing groups with a strong international market position. At this site, well known brands are brewed and packaged. A solution was required to reduce the high cost of discharging untreated wastewater to sewer and minimise the impact to the local environment. It was the clients requirement to treat site wastewater and discharge to river to achieve both of these aims.
The Client Client’s needs Our solutions
Veolia proposed a turnkey solution based on high rate, small footprint anaerobic/aerobic processes, including recovery of by-products such as methane.
The results and benefits
The turnkey project was commissioned in October 2007.Veolia will also operate the WWTP on behalf of the
discharge to river.
12
Full turnkey design and build solution List of technologies by steps of treatment Primary treatment
Secondary treatment
Aerobic Tertiary treatment
Filter Other treatments
and re-use Services
maintenance
Gas Burner Screen Balance Recirc.Tank Anaerobic Aerobic DAF Disc Filter Divert Odour Control Sludge Tank Belt Press Gas Buffer
Main technical Data
Consent
13
14