UV disinfection is now a standard final treatment stage in most wastewater treatment plants worldwide, and is widely favoured due to its environmentally friendly, chemical-free ability to provide high-log reductions of all known micro-organisms, including chlorine resistant strains, such as Cryptosporidium.
As growing environmental awareness and stricter regulations drive effluent discharge standards and water re-use initiatives to achieve greater performance, UV disinfection is fast becoming the treatment of choice on many waste water streams.
Through extensive research, atg UV Technology have identified the need for a range of compact closed chamber UV systems, which are easy to install into a pipeline, can deal with a wide range of water qualities and offer a high output within a small foot print. The advanced range of atg UV systems have successfully treated a wide range of fluids, in many different industries and have been installed on traditional and specialist wastewater treatment works worldwide.
All typical wastewater micro-organisms are rendered inactive with a correct dose of UV light; atg UV maintains comprehensive databases of organisms and the dosage of UV required to achieve 1, 2, 3 or higher log removals. Additionally, our leading compact, closed system design means municipal waste water does not need to be disinfected using open channel UV systems. Open gravity flow channels suffer from many disadvantages: poor hydraulic mixing, very large footprint, expensive to build, high head loss and vulnerability to fluctuations in flow rate.
All of our products are designed for insertion directly into a pipe. atg UV engineers will be pleased to demonstrate how a redundant chlorine contact tank can be used to house a new UV installation.
System sizing is a function of flow rate, transmittance of the waste stream, microbial challenge, discharge consent, and degree of standby (if any). Usually a wastewater facility will operate the UV system seasonally and will sometimes isolate and bypass a UV facility when disinfection is not required to meet a discharge consent.
Wastewater applications include backwash water, screen washes, watershed management, stream discharge, storm-water overflows and, increasingly, the re-use of waste water. Applications for reuse include irrigation for agriculture, landscape and golf, and in coastal regions for direct injection into the aquifer. Aquifer Storage and Recovery (ASR) schemes are now being implemented in coastal and water stressed areas around the world to prevent saline incursion into the aquifer.
Unlike filtration, Ultraviolet treatment actually reduces the total number of organisms in the environment without the use of chemicals. This avoids an increase in the toxicity of the water thereby helping to maintain the natural and sensitive balance of ecosystems worldwide.
Reusing final effluent wastewater for applications such as irrigation of crops and even potable drinking water is now becoming a necessity for many water stressed locations around the world. atg UV Technology have invested in validating 9 multi lamp, ultra-high output low pressure amalgam UV Systems for water reuse.
Using the NWRI Water Reuse validation protocols, the world’s first validation standard for wastewater and water reuse, atg UV can now offer a range of solutions that will treat final effluent wastewater to an ultra-high standard, allowing for the safe and control rejection directly into the head of the drinking water works, without any environmental barrier.
The validated UVLW series features the very latest in low pressure Amalgam UV lamp technology and optimised UV chamber design to deliver amazing performance at a fraction of the size and operational power compared to standard low pressure UV systems.
Designed for municipal drinking water, the UVLW design is centred on the market leading 800 Watt Amalgam UV lamp that provides significant advantages over standard 200 Watt, 325 Watt and 330 Watt UV lamps.
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