Application field data

LIT OMP UV systems are the ideal choice for disinfection of secondary and tertiary treated wastewater effluent. The flexible modular design of the OMP series allows UV disinfection technology to be used in a wide range of flow capacities from small communities, cottage villages WWTPs to large-scale municipal WWTPs of cities with several million populations.

UV systems series advantages

• State-of-the-art low-pressure amalgam high-intensity discharge lamps;

• Long guaranteed lamp operating lifetime of 12 000 hours;

• Effective chemical and mechanical cleaning technologies;

• Extensive, flexible monitoring and control capabilities;

• Electronic ballast increases overall system efficiency;

• UV sensors provide greater operational security;

OMP System Description and Components

LIT OMP UV Disinfection Systems have modular design for flexible, easy system integration, installation and operation. Designed for installation in an open channel, the OMP system can be provided in several configurations.

UV Modules

Each OMP UV module comprises of high power low-pressure amalgam lamps arranged in two vertical columns. The UV lamps are sealed in quartz sleeves which are placed in a horizontal position, parallel to the wastewater flow in the channel. UV modules can be removed from the bank independently from each other by hand or with auxiliary hoisting device. A group of lamp modules are known as a lamp bank.

UV lamps

All open channel UV modules are equipped with modern, industrially manufactured germicidal lamps that were developed by LIT engineers especially for wastewater disinfection. Newest amalgam high intensity lamps have three times more UV intensity than conventional mercury low-pressure lamps. LIT amalgam lamps have long service life: more than one year of continues operation. Low depreciation of UV radiation intensity at the end of lamps life and increased stability over water temperature variations guarantees effective disinfection during the lamp's life . The spectrum of UV lamps is optimized for germicidal effect.

Ballast cabinets

Electronic ballast cabinets are installed near each UV bank above the channel. Each UV module is connected to the electronic ballast cabinet through a pair of waterproof plugs. High efficiency electronic ballasts are installed inside the cabinets. Each cabinet has a small LCD display to provide the information about UV module and UV lamp status in respective UV bank.

Power supply cabinets

For large-scale UV systems incorporating multiple UV channels the power supply of the UV system is realized through separate Distribution Power Supply Cabinet. In the cabinet there are overcurrent protection fuses, main power switch and power switches for each UV bank. The electricity requirements for UV system are 380 V/3 phase / 50 Hz. From the distribution power supply cabinet there are electrical connections to the electronic ballast cabinets, water level control system, motor drives of the shut-off sliding gates and the cleaning system.