ULTRA VIOLET WATER TREATMENT TECHNOLOGY By Rony Holoang PT. SINAR MAS TOBELO
ULTRA VIOLET
WATER TREATMENT TECHNOLOGY
By Rony Holoang
PT. SINAR MAS TOBELO
ULTRA VIOLET BASIC TECHNOLOGY
Electromagnetic spectrum UV radiation is emitted in the wavelength range from 100 to 380 nanometre (nm).
100 200 280 315 380 780 nm
UV disinfection – how it works
254 nm spectrum of a low pressure lamp and the effective spectrum for killing bacteria (e-coli as DIN 1031 Part 10)
DNA – the target for UVC-irradiation
DNA
• High absorption in the UVC-range
• Large macromolecule (see table)
• Contains the complete set of blue prints for all molecules of the cell
• Single copy per cell
Micro organism
Escherichia coli (Bacteria)
Saccharomyces cerevisiae (Yeast)
Size of cell Length of DNA Number of base pairs
1µm 1360 µm 4 millions
5-10 µm 4600 µm 13,5 millions
Damage of DNA by UVC
Thymin dimer
the most important type
of UVC-damage
Cell
wall
UV
energy
cytoplasmic
membrane
DNA
nucleic
acid
cell nucleus
cell wall
DNA
cell wall
cell nucleus
DNA
cell wall +pigments
DNA
bacteria
yeast
fungi UV
-se
ns
itiv
ity
UV-sensitivity of different micro organisms
ULTRA VIOLET FOR WATER TREATMENT
INDUSTRIAL WATER
• PROCESS WATER Industry requires for many purposes clean, disinfected water which is recycled and re-used :
• Rinsing and cleaning processes
• Production processes in the food and beverage industry
• Production processes in the cosmetics-, chemistry- and automobile industries
• Injection water for oil extraction
• Processes in the semiconductor industry
INDUSTRIAL WATER
• BALLAST WATER
• As international shipping traffic expands, site-directed organisms are regularly taken in by ballast water and then introduced into different ecosystems. These organisms can be destroyed by on-board UV disinfection.
INDUSTRIAL WATER
• AIR CONDITION / HVAC WATER
Water is disinfected in air conditioning systems and humidifiers. No biocides are released into the air.
INDUSTRIAL WATER
• ACTIVATED OXIDATION / AOP (UV+H2O2; UV+O3) Various advanced oxidation processes can be combined with UV disinfection. For example, the chloramine loading of public swimming baths can be significantly reduced or high purity water can be produced for processes in the semiconductor industry and the optical industry.
• TOC (Total Organic Carbon) reduction
• COD (Chemical Oxygen Demand): destruction of organic contamination in water
• Direct water photolysis (such as NDMA)
MUNICIPAL WATER
• DRINKING WATER
A hygienic and safe supply of drinking water for the population is a key factor in the preservation of health and the prevention of epidemics. Drinking water can be disinfected and treated with UV light without adding chemicals. Neither taste nor smell or PH value of the water are affected. The special added benefit: pathogens cannot become resistant to UV light.
MUNICIPAL WATER
• SEWAGE WATER
Municipal sewage needs to be treated and disinfected before it is returned to the hydrological cycle. Only this enables protection of rivers, lakes, groundwater and public health.
MUNICIPAL WATER
• Open channel UV system
UV disinfecting module: compact structure, with innovative submersed compressed air cylinder for quartz sleeves cleaning device.
• Water proof:The connector of quartz sleeves is with multi- layer water proof and low water drop design.
• Cleaning device:The spring stainless steel wiper can keep the quartz sleeves with high UV transmittance after thousands hours operation. Cleaning device can be connected with UV monitor for automatically operation.
MUNICIPAL WATER Disinfection channel diagram
Application for Oilfield Reinjection Water
Application for Sewage Treatment Plant
APPLICATIONS IN HOUSEHOLDS WATER TREATMENT
Zoo Complex Aquarium
Hotel & Sport Complex Potable
OTHER APPLICATIONS
Swimming pool / Spa / Hydrotherapy Fish pond
Agriculture Aquaculture
ADVANTAGES OF UV WATER TREATMENT
Advantages of UV water treatment : • No influence on taste and smell • No addition of chemicals • It is environmentally safe • Short irradiation time • Effective against chlorine-resistant bugs
/pathogens like Cryptosporidium, Giardia • Easy handling • Low-maintenance procedure • Very low operating costs
DISADVANTAGES OF CHLORINATION IN WATER TREATMENT
The disadvantages of water chlorination: • Causes Smell and Bad Taste • Trihalomethanes ( carsinogen ) occur when react with
humic acid in water • Halo acetic acid ( carsinogen ) occur when react with
urine in swimming pool • Toxic residual even low concentration • Highly corrosive • Not effective for some bacteria ( cryptosporodia,
gyardia, legionella)
UV STERILIZER WORKING PRINCIPLE
• Water enters the stainless steel chamber where it is exposed to UVC
light.
• The UVC light penetrates the cell walls of bacteria, viruses and other
microorganisms, impacts directly on their DNA.
• This process kills cells so they are no longer able to replicate.
UVC light
UV STERILIZER APPLICATION
Reuse Water
Drinking Water
Municipal waste water
Food & Beverage
Aquaculture
Air Disinfection
Swimming pool
Medical
UV OPERATING CONDITION IN CLEAN WATER TREATMENT
• Water temperature: 5-40℃, ambient temperature: -
5~40℃, ambient humidity ≤93% (25℃)
• Water Quality
• Iron < 0.3 ppm (0.3 mg/L)
• Hardness* < 7 gpg (120 mg/L)
• Turbidity < 1 NTU
• Manganese < 0.05 ppm (0.05 mg/L)
• Tannins < 0.1 ppm (0.1 mg/L)
• UV Transmittance > 75%
* Where total hardness is less than 7 gpg, the UV unit
should operate efficiently provided the quartz sleeve
and/or sensor probe is cleaned periodically. If total
hardness is over 7 gpg, the water should be softened.
• UV Transmittance ≥75%
• Ideally, the disinfection system should be the last
treatment before water reaches the faucet.
Small Capacity
UV STERILIZER EQUIPMENT IN WATER TREATMENT
2 - 24 GPM
Medium - high Capacity
UV STERILIZER EQUIPMENT IN WATER TREATMENT
UV STERILIZER EQUIPMENT IN WATER TREATMENT
2 - 24 GPM
Medium - High Capacity
Cleaning tool
Control Systems
UV STERILIZER EQUIPMENT IN WATER TREATMENT
High Capacity
Chamber
UV STERILIZER SPARE PARTS
For further information please contact :
RONY HOLOANG Sales Manager
Office : Komplek Jababeka Simpruk Plaza Blok A3 No. 16 Cikarang – Bekasi 17530 Jawa Barat – Indonesia Phone : +62 – 813 1863 8886
Email : [email protected]