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Sand filters for Aquaculture filtration applications have long been used to improve water quality, primarily as mechanical filter but also as biological filter and chemical filtration contact tanks (such as carbon). They are economical to purchase, easy to operate, and can be used in a wide variety of applications. They have however, in the past, been limited to lightly loaded applications due to the media becoming quickly fouled due to biofilm and high levels of waste in aquaculture system not commonly encountered in pools.
Pure Aquatics has a wide range of media types to apply in different applications to help to ease the loading on sand filters and increase the effectiveness of filtration in aquaculture applications. From our experience in the aquaculture field and in conjunction with our suppliers, we have also developed a range of different hydraulic loading rates for various applications and media to ensure the most efficient and trouble free operation of your sand filter.
Waterco Filtration solutions offer a large selection of filtration components for use in water treatment. Pure Aquatics has been working with Waterco equipment for many years and together, both Pure Aquatics and Waterco can find the solution to your water treatment needs.
THE MULTICYCLONE
Waterco’s award-winning MultiCyclone technology uses the most advanced hydro cyclone technology to ensure high water quality and clarity.
An Australian innovation, the MultiCyclone is a pre-filtration device, which is designed to capture up to 80 per cent of the incoming dirt load prior to the main filter, which then significantly reduces filter maintenance and saves backwash water – not to mention improving water circulation. Waterco’s award winning MultiCyclone is a brilliant pre-filtration device that works on the basis of centrifugal water filtration and is designed with no moving parts and no filter media to clean or replace.
Micron fibreglass filters embody the latest in fibreglass winding technology. Micron fibreglass vessels consist of an inner shell of fiberglass reinforced polyester resin wound over with fibreglass filament. Waterco’s digitally controlled filament winding machine faultlessly winds continuous strands of high quality fibreglass filament under controlled tension filament to create a seamless one-piece vessel with refined consistency and superior quality. There are no welds or seams or special tank linings which can corrode or electrolyse.
Micron filters operate on the basis of “depth filtration”; dirt is driven through the filter bed and trapped in minute spaces between the particles of filter media allowing the cleansed water to pass through the filter’s laterals and exit via the filter’s Multiport valve.
The effectiveness and efficiency of the filter is impaired by excessive build up of debris, clogging the media, which will result in pressure build up and poor circulation. Cleaning the filter simply requires turning the filter’s Multiport lever from the “filter” position to the “backwash” position, which reverses the flow of water in the filter, flushing the filter bed.
Features
Waterco Filtration solutions don’t just stop at sand filters for pools and water treatment. The Aquabiome is designed for ponds and water gardens. It provides mechanical and biological filtration in a single housing. Its ability to support dense populations of nitrifying bacteria and its reliability and easy maintenance, makes Aquabiome especially suitable for high density recirculation systems.
MICRON TOP MOUNT MEDIA FILTERS
FEATURES:
Enhanced deep filter bed filtration and increased dirt capacity. The filter’s 1000mm media bed ensures that finer dirt particles and colloidal substances are retained to a far greater level than a filter with a shallower bed depth.
The filter’s greater bed depth permits efficient use of mixed bed filter media and water treatment media such as granular activated carbon.
Enhanced deep filter bed filtration and increased dirt capacity. The filter’s 1200mm media bed improves on the SMD 1000mm bed depth and ensures that finer dirt particles and colloidal substances are retained to a far greater level than a filter with a shallower bed depth.
The filter’s greater bed depth permits efficient use of mixed bed filter media and water treatment media such as granular activated carbon.
All the features of a 1200mm bed depth with superior water distribution and the ability to air scour.
The nozzle plate system allows the introduction of pressurised air directly into the bottom of the filter media. Uniform introduction of air and water through the nozzle plate provides vigorous agitation and filter media bed expansion required for an effective air/water backwash leading to reduced backwashing times and reduced volumes of water. Save up to 25% of backwash water.
The filter’s greater bed depth permits efficient use of mixed bed filter media and water treatment media such as granular activated carbon.
The spherical ends are designed to give uniform flow from both inlet and outlet collection assemblies. Micron Horizontal filters are available with a 500mm (M) filter media bed and a 1200mm (MD) filter media bed.
Sand filters should be more accurately called media filters. The range of sand filter media available is vast, with many different media’s available to suit various applications.
Sand filter media such as zeolite, sand, crushed glass, AFM, Glass Pearls, activated carbon, anthracite, various resins for removal of heavy metals and hardness from water, specialty sinking plastic media and many other medias can be used in sand filters.
To see our range of sand filter please visit
Filter sand is naturally occurring, graded and washed silicon dioxide. It is an inert media, hard, durable and has a long service life.
In our experience, sand is suited to only very lightly loaded applications, as the filter bed is prone to caking and blocking, resulting in channelling and the filter bed not be able to be backwashed effectively. It also has limited depth filtration, minimising its ability to hold more waste, resulting in more frequent backwashing.
Available in 0.6-1.2mm size for filtration in sand filters.
One of the newest filter media on the market, Glass Pearls offer a filtration level comparable to DE. Made from pure glass, the Glass Pearls filter out anything larger than 3 microns, giving you superior quality water.
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Ecopure crushed glass sand filter media is manufactured from recycled glass. Its is environmentally friendly and a viable alternative to sand and offers finer filtration when compared to sand.
Zeoplus is an incredibly hard zeolite (a naturally occurring mineral). It can remove ammonia from both fresh and saltwater, as well as some other dissolved pollutants as well. Zeolite offers great depth filtration and is a viable option for replacing sand in sand filters for both removal rate and dirt holding capacity. Zeoplus can filter approximately 90% of the particles in water down to 10 microns per pass.
Pure Aquatics offers two types of activated carbon.
For Chlorine and ozone removal we recommend our Coconut carbon (available in a range of sieve sizes) as the pore distribution is more effective for these types of ions (almost exclusively microporous).
For organics and tannin/colour removal we recommend a coal based activated carbon that has both micropore and mesopore structured pores.
Plastic media, for use in biological Pond filters – specifically in moving bed bio reactors, was pioneered by Evolution Aqua, some 20 years ago. In recent years, other plastic media have come onto the market, usually with the aim of trying to get more and more surface area. However, one drawback to using plastic media has always been the time it takes to establish a stable biofilm – essential for good filtration.
After many years of research, Evolution Aqua have now developed a new media that not only gives class leading surface area, but also overcomes the problem of long maturation times.
K+Media is designed and manufactured in the UK by Evolution Aqua. This advanced media, with its innovative design, and class leading surface area provides enhanced biological and mechanical filtration. As Evolution Aqua extrude the K+Media, Minerals and Enzymes are added to the raw material. The result of this process, unique to Evolution Aqua, is a filtration media that not only outperforms most of its competitors due to its large protected surface area, but also answers the problem of how to speed up the time taken to mature your filter.
