1. ATG UV Tech: World leader in UV Tech
info@atguv.com
01942 216161
UK based
Have not done projects in Middle East
or India but DO work internationally
• Case study: minimised costs and
inconvenience for Dee Valley Water by
modifying existing chambers to suit ATG
advanced lamp technology
Due to having over 30 years exp and success in the field, with good reviews and
impressive case studies. I feel they are the best choice available in terms of quality
and reliability
2. Halma UV group- Head of a three
company group
Aquionics- Based in North America
and supplies there only
Hanovia- Supply UV DISINFECTION
equipment to Europe and ASIA
Berson- Supply general UV
equipment to Europe and ASIA
sales@hanovia.com
+44 (0)1753 515 300
Hanovia stand out from the other two companies
Specify on UV disinfection, based in the UK
Have done over 50,000 projects worldwide
3. Enki Water: Company with Exp in
Mid East
info@enkiwater.net
+90 212 671 53 56
Based in Turkey
Have 8 years of experience in water
treatment
Case Study: Biological Wastewater Treatment
and Recycling in Jordan with Superior Iraqi
Oil Services Co.
Useful company to look into as they have worked in the middle East a few times
successfully before
4. Other companies to consider
• Pure Aqua-sales@pureaqua.com
• UltraAqua-ultraaqua@ultraaqua.com
5. Requirements
• • Spatial requirements
• • Budget Capital Costs
• • Budget Operating Costs
• • Operation and maintenance requirements
• • Pre-treatment requirements
• • Energy requirements per m3 of water treated by UV
7. Pre-Treatment
• Water may have properties which have an adverse effect on UV disinfection
• Properties such as iron and nitrates can be the cause of these adverse effects as
they reduce UV transmittance
• Hardness and alkalinity may also contribute to this negative effect on UV
• Turbidity is a measure of water quality. Ideally turbidity should be less than 0.1
NTU before UV is used on it
• Filtration, Oxidation and Absorption processes are all pre-treatment methods
which help the effectiveness of UV disinfection
8. FiltrationFiltration ranges (Membrane Filters)
Microfiltration
• Process in which unwanted contaminants are removed using membranes with pore
sizes between 0.1 - 10µm
• Consists of:
• Water
• Suspended particles (stays within membrane)
• Dissolved particles (pass through membrane)
• A driving pressure
• Hydraulic pressure can be used to increase the flow rate, thus speed up the
separation process
• Build up of suspended particles and permeable particles on the membrane surface is
called fouling and this inhibits the speed of the flow rate, thus reducing the
efficiency of the process
• Removes all bacteria
• Does not removes all viruses as they are smaller than the pore size
9. Ultrafiltration
• Used to separate suspended solids, colloids,
viruses, and bacteria
• Membranes between 1-100 nm
4 membrane types:
• Spiral wound module
• Plate and frame module
• Tubular membrane
• Hollow fibre membrane
10. Cont. of filtration
Granular/Particle filtration
Slow Sand Filtration
• Consists of:
• A fine layer of sand
• Hypogeal (Biofilm)
• Water
• Biofilm purifies foreign, unwanted
particles as the water brings them
through
• Dissolved organic material are
metabolised by the biofilm
• Sand layer acts as a support to the
biofilm
Maintenance
• Filter loses its performance as
biofilm grows
• To refurbish filter, the top few mm
of sand need to be scraped off to
expose new clean sand
• Water is then poured back into the
filter to let biofilm grow
