Water treatment for rainwater

Tuesday, 07 April, 2009 | Supplied by: Davey Water Products


The Aquashield Max automatic water treatment package is suitable for the pressure boosting and disinfection of rainwater, especially where conserved and stored rainwater is to be used as a potable drinking water supply.

The typical applications, often in rural areas, include domestic households, schools, commercial toilet flushing, public buildings and accommodation facilities such as motels, guest houses or bed-and-breakfast venues. It is also suitable for bacteria and algal control for aquaculture projects or water features as well as treating bore or surface water supply sources.

The fully engineered and ready-to-install package provides a three-stage process to treat microorganisms such as viruses, bacteria and parasitic cysts, which can contaminate a rainwater collection area.

Designed with a series of steps from 20 to 1 µm filtration and UV disinfection, the three treatment stages use two Filterpure cartridge filtration stages and exposure to UV light at 254 nm in a Steriflo UV chamber, which damages the DNA of contaminants.

Fitted within a heavy-duty self-contained, plastic housing, the unit employs flexible plumbing and connection options, with all internal water works, using braided stainless steel hoses. Designed and built as a plug-and-play package, it has high flow rates and low friction losses with connection to a 240 V plug.

The unit is able to deliver treated water at flows of up to 70 L/min and pressures of up to 850 kPa — ample water for a large multi-bathroom dwelling or large toilet block.

It can be supplied with either a Davey Torrium intelligent adaptive pump controller or a RainBank Mark II controller, the latter where rainwater needs to be backed up with a main water source, ideally in a metropolitan application.

The controllers are interlocked with the UV so that untreated rainwater will not be delivered without a warning being provided.

Online: www.davey.com.au
Phone: 03 9730 9222
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