SVS Aqua Technologies
NEW RASTA PETH, Pune, Maharashtra
GST No. 27ACGFS0857F1Z1
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Product Details:
| Bulk Density | 2.5~2.7 g/ cm3 |
| Packaging Size | 25 Kg |
| Packaging Type | Bags |
| Surface area of SFm | 1000000 m2/ton |
Chromium is occasionally found in ground water in trace amount from 1 to 10 ug/l however, the occurrence of chromium is usually associated with pollution from industries such a leather tanning, wood preservation and textiles. Polluted ground water may have much higher concentrations.
Hexavalent Chromium is very difficult to remove down to low concentrations, however, AFM can absorb Cr6+ directly from the water. If the concentration is low then it may be possible to just filter the water through a deep AFM filter bed >1200mm at a slow flow rate, 5m/hr. This may be all of the treatment required.
AFM has a low capacity for chromium, so in order to improve performance, water pretreatment may be required The Cr6+ is reduced to Cr3+ by using a reducing agent such as ferrous sulphate or calcium polysulphide. The reaction takes time, so a buffer tank of more than 30 minutes is required.
After the 30-minute contact tank, the water overflows to a second contact tank which is aerated, this oxidises any remaining ferrous to ferric which co-precipitates and flocculates the Cr3+ to form a solid particle that can be more easily removed by AFM. The bed may take few week to get conditioned to chromium.
Procedure:
AFM filtration Details:
Pretreatment of the water prior to filtration by AFM is very important. AFM will remove Cr6+ and Cr3+ by the following mechanisms:
Product Details:
| all | all |
| Performance comparison of AFM with sand and UF | |||
| AFM | Sand | UF at 0.03 microns | |
Remove dissolved silica | Yes | Can add free silica to water | No |
Remove phosphate | Yes, when combined with NoPhos | no | No |
Remove dissolved organics | Yes, especially when combined with APF are coagulation and flocculation using ZPM | After 6 months sand filters will be increasing organic load through autotrophic bacteria | No, UF cannot remove chemicals in solution. |
Biofouling | No, AFM does not biofoul | Yes, 100% coverage of every grain of sand in 3 days | Yes, membranes need to be regularly cleaned |
Prevention of RO membrane biofouling | Yes, because it removes phosphate and dissolved nutrients required by bacteria | No, sand is the perfect substrate to grow bacteria. Often solids load is higher on discharge than influent. | Phosphate and dissolved nutrients will react the RO membranes |
Scaling | No | Yes, with carbonates, calcite, struvite, ferric etc | Yes, with carbonates, calcite, struvite, ferric etc |
chlorination | Not required, AFM does not biofuel. So no chlorine reaction products such as THM`s, TCA, or hydrobromic acid | Yes, sand filters need to be chlorinated continuously or as part of a regular cleaning schedule. | May be required as part of the cleaning schedule |
Filtration level | 90% down to 0.1micron, approx. 80% down to 0.01micron | All sand filters will channel, so membranes are exposed to unfiltered water. | 0.03 to 0.01 microns absolute, unless the membrane ruptures |
Sustainable | 100% sustainable, Circular Economy VIBES winner in the UK | No sustainable, needs to be replaced at 1 to 10-year intervals | Not sustainable, membranes need to be replaced at 1 to 10-year intervals |
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Product Details:
| Minimum Order Quantity | 50 Kg |
| Size | 0.4 mm to 1 mm |
Certain specialised applications of AFM –
In addition to traditionally recommended substitute to filter media in rapid gravity sand filters or pressure sand filters. There are several critical application performed by AFM.
UF, RO membranes & DM plant resins work best when they are new and clean. Fouling of the membranes by inorganic and organic contaminants as well as biofouling are some of the main issues affecting the performance and cost of running water treatment systems.
AFM is an activated mesoporous aluminosilicate with glass as a structural substrate. The surface area is over 1,000,000m2 per tonne of filter media of a particle size 0.5 to 1.0mm. The very large surface area has a negative –ve charge for the adsorption of positive +ve particles that are too small to be mechanically removed from the water. The pre-coagulation and flocculation stage will drag some chemicals out of solution to form small positive charge particles that are easy to remove by AFM.
AFM is used prior to UF and RO, however, AFM filtration can actually out-perform UF filtration when combined with pre-coagulation and flocculation via a ZPM static mixer prior to AFM filtration. AFM is a much lower cost than UF and can remove most particles down to 0.1 microns and many particles that are much smaller by adsorption reactions. While UF will give absolute filtration down to 0.03 microns, AFM can give nominal filtration down to at least 0.1microns and sub 0.01-micron particles by electrical adsorption reactions. AFM will also remove many chemicals and pollutants from solution by selective molecular sieve adsorption. Indeed we can now activate AFM to remove specific dissolved priority substances from water. AFM can, therefore, perform better than UF and is a more cost-effective and efficient option as a pre-treatment prior to RO.
Regeneration of AFM is by a simple backwash using filtered water, and the process is 100% sustainable, the media should last for the life of the filtration system.
You don’t need to use chlorine with AFM for cleaning, so no THM (trihalomethane) production with organic matter such as organic acids. In addition to dissolved natural organic matter, TCP (trichlorophenol) can act as a precursor for the production TCA trichloroanisole. TCA has a terrible taste even at single-digit parts per trillion.
SDI control in membrane -
As a pre-treatment prior to RO or UF, the SDI after AFM will be at least 50% to 75% lower than the SDI from a sand filter. IFTS independent accredited laboratory has conducted a very detailed analysis of AFM in comparison to sand other media. The results confirm the superior performance of AFM.
Product details:
Product Details:
| 100 | 100 |
| Type | Filter Media For RO |
| particle size | 0.5 to 1.0 mm |
UF, RO membranes & DM plant resins work best when they are new and clean. Fouling of the membranes by inorganic and organic contaminants as well as biofouling are some of the main issues effecting the performance and cost of running water treatment systems.
AFM is an activated mesoporous aluminosilcate with glass as a structural substrate. The surface area is over 1,000,000m2 per tonne of filter media of a particle size 0.5 to 1.0mm. The very large surface area has a negative -ve charge for the adsorption of positive +ve particles that are too small to be mechanically removed from the water. The pre-coagulation and flocculation stage will drag some chemicals out of solution to form small positive charge particles that are easy to remove by AFM.
AFM is used prior to UF and RO, however AFM filtration can actually out-perform UF filtration when combined with pre coagulation and flocculation via a ZPM static mixer prior to AFM filtration. AFM is a much lower cost than UF and can remove most particles down to 0.1 microns and many particles that are much smaller by adsorption reactions. While UF will give absolute filtration down to 0.03 microns, AFM can give nominal filtration down to at least 0.1microns and sub 0.01 micron particles by electrical adsorption reactions. AFM will also remove many chemicals and pollutants from solution by selective molecular sieve adsorption. Indeed we can now activate AFM to remove specific dissolved priority substances from water. AFM can therefore perform better than UF and is a more cost effective and efficient option as a pre-treatment prior to RO.
Regeneration of AFM is by a simple back-wash using filtered water, and the process is 100% sustainable, the media should last for the life of the filtration system.
You don't need to use chlorine with AFM for cleaning, so no THM (trihalomethane) production with organic matter such as organic acids. In addition to dissolved natural organic matter TCP (trichlorophenol) can act as a precursor for the production TCA trichloroanisole. TCA has a terrible taste even at single-digit parts per trillion.
SDI control in membrane -
As a pre-treatment prior to RO or UF, the SDI after AFM will be at least 50% to 75% lower than the SDI from a sand filter. IFTS independent accredited laboratory have conducted a very detailed analysis of AFM in comparison to sand other media. The results confirm the superior performance of AFM.
SWRO - Sea water reverse osmosis has found a great importance today as a technology for the reclamation of brackish water or sea water and making it portable enough for human consumption or industrial applications.
The most common schematics of an SWRO consists of a pre-filtration after a grit removal by an MGF/MMF followed by a disc filter and further to UF & RO. Sea water in most of the cases of has a large contamination of organics, bromine & other heavy metals. The most common biocide preferred for the use as a pretreatment for disinfection and sanitation to an SWRO is chlorine.
Chlorine in presence of organics, bromine & other heavy metal forms several chlorinated & disinfection byproducts including bromates which are no desirable in the SWRO plants. There are several instances which are brought to notice with contamination of the membranes in RO due to DBP's & bromates.
UF and RO membranes work best when the membranes are new and clean. Fouling of the membranes by inorganic and organic contaminants as well as biofouling are some of the main issues affecting the performance and cost of running membrane water filtration systems.
AFM as a media instead of sand -
Additional Information:
Product Details:
| Minimum Order Quantity | 50 Kg |
| Life of media | 10 years. |
Certain specialised applications of AFM -
In addition to traditionally recommended substitute to filter media in rapid gravity sand filters or pressure sand filters. There are several critical application performed by AFM.
AFM® is successfully working in over 100‘000 private and public swimming pools worldwide.
Where to use AFM® in the swimming pool?
Every swimming pool has a pressure sand filter installed which normally has a sand as a media of different grades. AFM is used to replace existing filter media in the PSF.
Why use AFM in the swimming pool?
AFM® reduces the biological risk from bacteria and parasites as well as the chemical risk from water and air just above the surface. The result is a safer pool for children, a healthier workplace for staff in public pools and a greatly improved swimming experience for everyone.
Key benefits at a glance
Commercial benefits of use of AFM in swimming pool -
Additional Information:
Product Details:
| Material | Glass |
| Color | Green |
| Brand | DryDen |
| Packaging Type | Bag |
| Usage/Application | Water Filtration |
AFM - active filter media is a product of Dryden Aqua Research & Development over the last 20 years to replace filter grade sand. AFM is manufactured from a specific type of glass and processed to provide a hydraulically optimised media in terms of particle shape and particle size distribution. The glass then proceeds through an activation process to increase the surface area by 300 times over crushed glass or sand. The high surface area is negatively charged (zeta potential) to adsorb organics and small particles, the surface also has permanent metal oxide catalysts that give a high redox potential to make AFM self-sterilising and the only activated glass filter media.
AFM properties -Certain specialised applications of AFM-
In addition to traditionally recommended substitute to filter media in rapid gravity sand filters or pressure sand filters. There are several critical application performed by AFM.
Additional Information:
Product Details:
| Color | green |
| Particle size | 0.3 - 2.0 mm |
| Usage/application | iron removal in water treatment, chemical processing plant, domestic application |
| Form | Granules |
| Packaging Detail | 25 Kg Bag |
Arsenic is often found in borehole/tube wells and ground water at varying concentrations depending upon the geology of the ground. In India western states along with certain locations in the south have fairly high contamination of Arsenic in the groundwater. IN certain cases Arsenic is also found in the waste water effluent of certain industries.
Process
1. Oxidation reactions to convert metals from soluble ionic form to insoluble oxidised precipitate, pH correction and redox correction.
2. Decantation may be required if the concentrations are above 5 mg/l, if not proceed to AFM filtration.
3. AFM filtration to remove the suspended metal oxide solids, there will also be adsorption reactions and surface oxidation reactions.
ProcedureOxidation: This is achieved through aeration of the water. The water is aerated for a period of no less than 60 minutes. If water flow is 50 m3/hr the aeration level is 100m3/hr of air and tank volume is 50m3 of water. Aeration also helps in removing the several dissolved gases from water and making the water to behave in a manner favourable for mechanical adsorption on AFM.
pH: The pH of the water should be increased to a value over pH 7.5
Appearance: Granules
Redox: The aeration system should increase the redox potential of the water. It is important to raise the potential to as high a value as possible. Certainly, it should be over 200mv.
AFM filtration
Pretreatment of the water prior to filtration by AFM is very important. AFM will remove the metals and metalloid by the following mechanisms;
Arsenic removal by AFM is one of the recommended technology by the Department of science and technology. Several projects are in operation currently in the state of west Bengal for the removal of Arsenic from the ground water.
Product Details:
| Material | Glass |
| Color | Green |
| Brand | DryDen |
| Packaging Type | Bag |
| Grade | 4 grades |
| Usage/Application | Water Filtration |
| SIZE | 0.4 MM TO 1 MM |
Certain specialised applications of AFM -
In addition to traditionally recommended substitute to filter media in rapid gravity sand filters or pressure sand filters. There are several critical application performed by AFM.
Product Details:
| Color | Green |
| Form | Crystal |
| Grade | Technical |
| Packaging | Bag |
Additional Information:
Certain specialized applications of AFM –
In addition to traditionally recommended substitute to filter media in rapid gravity sand filters or pressure sand filters. There are several critical application performed by AFM.
AFM - active filter media is a product of Dryden Aqua Research & Development over the last 20 years to replace filter grade sand. AFM is manufactured from a specific type of glass and processed to provide a hydraulically optimized media in terms of particle shape and particle size distribution. The glass then proceeds through an activation process to increase the surface area by 300 times over crushed glass or sand. The high surface area is negatively charged (zeta potential) to adsorb organics and small particles, the surface also has permanent metal oxide catalysts that give a high redox potential to make AFM self sterilizing and the only activated glass filter media.
AFM properties -Certain specialised applications of AFM -
In addition to traditionally recommended substitute to filter media in rapid gravity sand filters or pressure sand filters. There are several critical application performed by AFM.
Certain specialised applications of AFM -
In addition to traditionally recommended substitute to filter media in rapid gravity sand filters or pressure sand filters. There are several critical application performed by AFM.
AFM – active filter media is a product of Dryden Aqua Research Development over the last 20 years to replace filter grade sand. AFM is manufactured from a specific type of glass and processed to provide a hydraulically optimised media in terms of particle shape and particle size distribution. The glass then proceeds through an activation process to increase the surface area by 300 times over crushed glass or sand. The high surface area is negatively charged (zeta potential) to adsorb organics and small particles, the surface also has permanent metal oxide catalysts that give a high redox potential to make AFM self-sterilizing and the only activated glass filter media.
AFM properties -Certain specialised applications of AFM –
In addition to traditionally recommended substitute to filter media in rapid gravity sand filters or pressure sand filters. There are several critical application performed by AFM.
Product Details:
| Usage/Application | WATER FILTERATION |
| Color | GREEN |
Certain specialized applications of AFM –
In addition to traditionally recommended substitute to filter media in rapid gravity sand filters or pressure sand filters. There are several critical application performed by AFM.
Additional Information:
Certain specialised applications of AFM -
In addition to traditionally recommended substitute to filter media in rapid gravity sand filters or pressure sand filters. There are several critical application performed by AFM.
Certain specialised applications of AFM -
In addition to traditionally recommended substitute to filter media in rapid gravity sand filters or pressure sand filters. There are several critical application performed by AFM.