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 : marketing1smt@gmail.com