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aquality forum |
NoPhos |
references |
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Water quality for aquatic animals in chlorinated
enclosures |
click here
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- and how to size, operate &
inspect a filter
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power point presentation
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click here |
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Schematics of water treatment systems using AFM |
click here |
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Products |
click here
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Nophos solves algae and water quality issue in a water
park ( also Legionella control) |
click here |
| Over 90% of the issues
surrounding water quality and clarity relate to solids removal,
AFM will eliminate most of the problems associated with sand bed
coagulation and channelling, which allows your sand filters to
continually operate as they were intended. This will normally
result in a 50% reduction in turbidity and double the visibility
through the water. Biological loadings will be reduced by up to
80 %, |
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Quote from a Public Aquarium
- "We have had your AFM in our raw water
filters for a few weeks now and have been monitoring the results. Wow what
a difference. Backwash is complete and there is no channelling or clumping
at all even with our very fine sediments. I wish the aquarium folk would
take more cognisance of what is happening in the aquaculture field"
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- Kuwait Foundation for the Advancement of the Sciences (KFAS)
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10 key benefits of AFM over sand
Increases water
clarity by removal of colloidal matter Remove at least
50% more solids from the water, including bacteria, algae and
protozoa Reduce the amount
of nitrate produce by reducing the mineralization of protein High surface
negative zeta potential attract +ve charges organic molecules High surface
oxidation potential, helps to crack organics, just like ozone and
UVc systems Use only 1/2 the
amount of back-wash water Removes colour by
catalytically cracking organic molecules, due to surface oxidation
potential Adsorbs micron and
sub-micron particles including organic molecules (and colour),
100% released on back-wash into waste water AFM will not
generate solids & bacteria, or periodically dump solids & bacteria
into the water. Sand filters will periodically discharge
into the product water, see report on drinking water treatment Will minimise
phosphates, especially when combined with NoPhos due to high
surface zeta potentia
At Dryden Aqua, we Manufacture AFM filtration media. As Marine
Biologist we also provide a full range of systems, water quality advise
and can act as consultants to trouble shoot any water quality issues
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AFM will improve water quality |
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What goes into a filter must
come back out
The graph on the right shows the back-wash turbidity
profile for sand filters and AFM filters.
When the filters are back-washed the Turbidity against
time profile gives a smooth, predictable and repeatable profile with
AFM. The sand back-wash profile was more erratic.
The area under the curve gives the amount of waste
matter back-washed out of the filters confirms that AFM is removing
25% to 30% more waste from the water than sand. This data refers
to new sand and AFM filters. We find that as sand ages the
performance continues to deteriorate whereas AFM stays the same or can
actually improve. After about 6 months or more partial channelling of
water can start to occur with sand filters, leading to serious reduction in water quality. |
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