KDF filter media

KDF55 Media is alloy of copper and zinc which used in water filtration applications. It is desing-ed specially for removing or reducing chlorine and water -soluble heavy metals. It could controls scale,bacteria and algae,even in hot water.
KDF 55 Media could produce eletricity exchange reaction and remove heavy metal ,cop-per,lead,mercury ,arsenic etc. It widely used along with activated carbon to maximise the filter efficiency.

Generally KDF55 Media is used in a purification system as a prefilter,before finer stage of filtra-tion, such as ,reverse osmosis,deionization and ion exchange systems.

Quick Details

Uses of KDF55 Filter Media:

Reduces chlorine, heavy metals, and scale in water, minimizing maintenance efforts.
Enhances the effectiveness of carbon filters and extends their lifespan.

Working Principle of KDF55 Filter Media:

When used in water, a chemical reaction called redox (reduction-oxidation) occurs. During this reaction, electrons are transferred between molecules. For example, free chlorine is converted into harmless chloride through this reaction and then filtered out. Similarly, heavy metals such as copper, lead, and mercury react and precipitate on the surface of the filter media, effectively removing them from the water.

Use of KDF55 in High-Temperature Water (0-100°C):

KDF55 remains unaffected even in high-temperature water, such as in hot showers. It helps reduce exposure to harmful chlorine during showering.

Backwashing:

Backwash flow rate: Should be 2 times the normal flow rate.
Backwash duration: Should be 10 minutes or less.
Rinsing: Purge and rinse for 3 minutes, at least twice a week.
Adjustments: At lower water temperatures, the backwash speed can be reduced; at higher temperatures, a higher speed can be used.

Cleaning:

If the filter media becomes clogged due to long-term lack of backwashing or use, it can be cleaned using hydrochloric acid.

Prepare the acid solution: Dilute concentrated hydrochloric acid in water to achieve a pH greater than 2.5.
Soak the filter media: Pour the acid solution into the filter media and let it soak.
Backwash: Perform a backwash for 20 minutes until the outflowing water is clear and its pH matches the incoming water.

Summary:

KDF55 filter media is highly effective in reducing chlorine, heavy metals, and scale in water. It enhances the performance of carbon filters and is suitable for use in both cold and hot water systems. Regular backwashing and occasional acid cleaning ensure its optimal performance and longevity.

Specification

Item	Standard
Appearance	Golden brown flaky particle
Bulk Density	2.5~2.7g/ cm3
Diameter	5~100 mesh
alloy of copper and zinc Content (%)	99.8~99.9%

Heavy metal Test result - safe for life and drinking water treatment

Item	Unit	Test result			Conclusion
Size	-	Blank	Sample 1	Sample 2	OK
chromaticity	-	<5.0	<5.0	<5.0	OK
Appearance	-	-	Golden brown flaky particle	Golden brown flaky particle	OK
PH value	-	7.98	8.08	8.10	OK
Arsenic(As)	mg/L	0.001	0.001	0.001	OK
Cadmium(Cd)	mg/L	<0.00006	<0.000425	<0.000503	OK
Chromium(Cr)	mg/L	<0.004	<0.004	<0.004	OK
Plumbum(Pb)	mg/L	<0.00007	<0.00007	<0.00007	OK
Aluminium(Al)	mg/L	<0.008	<0.008	<0.008	OK
Mercury(Hg)	mg/L	0.001	<0.001	<0.001	OK
Iron(Fe)	mg/L	0.25	<0.005	<0.005	OK
Volatile phenol	mg/L	<0.002	<0.002	<0.002	OK
Chloroform(CHCl3)	ug/L	<0.6	<0.6	<0.6	OK

Application

i.High-Efficiently remove chlorine,pesticides,organic matter,rust,unpleasant taste and odour.

ii.Efficiently kill algae and fungi,control bacteria growth.

iii.Efficiently removes soluble heavy metal ions in water such as Pb2+,Cd2+,Cr6+,As3+,Hg2+,Mn2+,Ni2+,Al3+,Fe3+ etc.

iv.Efficiently remove hydrogen sulfide,calcium and other organic compounds.

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