Ozone Rainwater Harvesting Treatment Systems
Time:2023-06-29
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Q: Alternative Water Supply
Rainwater harvesting provides an alternative water source while conserving water in your community. This method
can be used as a main source or as a backup water source.
Q: Benefits of Rainwater
Collecting rainwater for personal use can help reduce water bills while also helping the environment. Rainwater
harvesting can help reduce erosion and reduce flooding.
Q: Is Rainwater Clean?
While rainwater is usually considered clean, it’s important to remember it’s only as clean as its harvesting systems
and container. The catchment surfaces where the rainwater is collected can be contaminated by birds or materials
used on the catchment surface, for example roofing materials. Different roofing materials create different levels of
contamination in water that should be treated by the rainwater harvesting system .
Q: What can treat the Rainwater for use?
Typically, collected rainwater is used for non-drinking purposes like bathing, washing dishes or flushing toilets.
Ozone treatment will help eliminate bacteria and other materials from the water before its intended use. Professional
treatment of water from commercial rainwater harvesting systems generally requires disinfection and filtration for
many applications of the captured water.
UV
UV is a good choice for simple disinfection applications where protection of the storage tank from the formation of biofilms
is not an issue. The UV system is usually positioned in the from the storage tank going to the application where the
rainwater will be used, e.g. toilet flushing or landscape irrigation. The UV will inactivated most micro organisms present in
the water. It will not remove any micro organisms int eh tank, biofilms on the tank surfaces or remove any dissolved organic
compounds in water. Organic compounds in the water or micro organisms living int eh tank can result in color or odor
problems with the water. In some applications this might not be a problem, but may be in an a pplication such as toilet
flushing.
Ozone
Ozone systems can be positioned to treat the rainwater in the tank by recycling the water through an ozone injection
system or by continuously bubbling the ozone in to the storage tank. Ozone is a broad spectrum biocide that treats all of
the water int eh tank as well as preventing the formation of biofilms on the tank surfaces. In addition, ozone can remove
color and odors from water that allow the water to be used in a wider array of applications. .
Ozone/UV
Ozone and UV can be used together. Ozone would treat the bulk of the water in the tanks while the UV can be used to treat
the water sent to the application, e.g. landscape irrigation. This approach offers a couple of benefits: first, it provide
redundancy should either system fail insuring that pathogens never reach the end use of the water. Second, for
applications where residual ozone might not be desirable int eh water, UV will remove most if not all of the ozone residual
prior to the application.
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