UV technology has made tremendous gains
in the last 25 years and is now recognised as a primary method of disinfecting
waste water. atg UV Technology have researched the wastewater industry and
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 non viable by 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.
As climate change and growing
environmental awareness drive effluent standards and water re-use initiatives,
UV treatment is fast becoming a "must have" treatment on many waste
water streams. With an impressive international client portfolio and vast
amount of experience in the Ultraviolet industry, atg UV are leading the way in
the custom design of Ultraviolet technology systems that fully meet the dose
and testing requirements for this rigorous process.