Commonly referred to as the Troublesome Trio, Iron, Manganese and Sulfur, although not a real health concern, these dastardly elements will reap havoc on a plumbing system. As little as 0.05ppm of Manganese will cause staining of plumbing fixtures. Only 0.5 ppm of iron will cause staining. And Sulfur? P.U.! Need I say more?
To battle the Trio, professionals have traditionally used Ion Exchange water softeners and Oxidation/Reduction media. Ion Exchange only works on dissolved iron and manganese and is prone to fouling and won't treat sulfur. So my experience is to apply oxidation media that has been treated with a coating of Manganese Dioxide. These media are popular in the industry and are sold under the trade names of Birm, MTM, Pyrolox, Filox, and Greensand Plus. All these media have different percentages of manganese dioxide coatings. The amount of coating determines their capacity. The key to success lies with this capacity.
Manganese Dioxide acts as a catalyst that utilize oxidizers fed into the water stream ahead of the media bed to perpetuate the oxidation and reduction process. Pre-feeding oxidizers is commonly called "regeneration". Please note, in all my years of experience, your success with these media depends heavily on choosing the correct oxidizer. It is a VERY rare application where you don't need to pre-feed an oxidizer. The most popular oxidizers are potassium permanganate (very messy because it stains everything purple) , Sodium hypochlorite (bleach), Air, or 7% Hydrogen Peroxide. The most popular is bleach. Be careful to follow the manufacturers guidelines for feeding oxidants. To much will strip off the manganese dioxide coating.
Now The Exciting News:
Prince Minerals has developed a new Media called Pyrolox Advantage (PA). PA is manufactured with a proprietary process that gives it a high capacity, yet maintains a lighter-than-most density so backwash rates are greatly reduced over traditional Manganese Dioxide products. Thus the "Advantage" part. Additionally, its lighter density will make it a direct replacement for another popular media called Greensand Plus. An even bigger advantage, is that Pyrolox Advantage has nearly 3X the oxidation capacity. Its increased capacity will lengthen run time between back washing saving significant amounts of water. To conclude, if you are currently filtering with greensand plus or are battling any of the Troublesome Trio, please try Pyrolox Advantage. It's priced right to win the fight!
Showing posts with label Filter Media-Greensand. Show all posts
Showing posts with label Filter Media-Greensand. Show all posts
Friday, May 30, 2014
Monday, August 26, 2013
Customized Greensand Filter for Brewery Prepared for Shipping
With factory testing completed, Res-Kem's greensand filter with several advanced features is ready for shipment to a local brewery. Because the water is integral to production of their beer, this expanding brewery needed features which are not typical for a greensand filter:
General System Information:
Four tank, continuous regeneration non-skid mounted greensand system with manual, differential pressure and/or totalized flow initiated regeneration. The system is constructed of four, 48" diameter fiberglass, non-ASME code, rated at 100 psig working pressure tanks. The system is controlled using an Allen Bradley CompactLogix PLC with an Allen Bradley Panelview Plus 1000 touchscreen HMI. The system has Georg Fischer pneumatically actuated air-to-spring ball valves with visual and electrical valve indication. The face piping is Schedule 80 PVC pipe and fittings. Each vessel contains 38 cubic feet of Greensand Plus for high iron removal. To allow for iron removal, the incoming water will be treated continuously with a chlorine dioxide generator.
For Additional Information:
- Allen Bradley CompactLogix PLC with Ethernet gateway to communicate with the central plant control system.
- Expandable, in the field, from four to eight parallel greensand filter units without requiring reprogramming of the PLC.
- Multiple, user definable, regeneration initiation options including manually initiated, differential pressure and/or totalized flow.
- Valve position feedback to insure when a valve supposed to be open or closed, the valve is in the correct position. If incorrect, an alarm will sound and be indicated on the Panelview 1000 HMI.
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| Quad 48"Diameter Greensand Filter During Factory Testing |
Four tank, continuous regeneration non-skid mounted greensand system with manual, differential pressure and/or totalized flow initiated regeneration. The system is constructed of four, 48" diameter fiberglass, non-ASME code, rated at 100 psig working pressure tanks. The system is controlled using an Allen Bradley CompactLogix PLC with an Allen Bradley Panelview Plus 1000 touchscreen HMI. The system has Georg Fischer pneumatically actuated air-to-spring ball valves with visual and electrical valve indication. The face piping is Schedule 80 PVC pipe and fittings. Each vessel contains 38 cubic feet of Greensand Plus for high iron removal. To allow for iron removal, the incoming water will be treated continuously with a chlorine dioxide generator.
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| Touchscreen Panelview Plus 1000 HMI for Equipment Control |
Friday, July 20, 2012
Greensand Filters Shipped to Western PA Water Plant
A western Pennsylvania, small private water utility, recently received four greensand filters to replace the filters that were failing. Unable to get the original manufacturer to provide new, duplicate units, our customer found our website.
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| Four New Greensand Filters and Greensand Media Ready for Shipment to Water Utility |
Because of State regulations, the systems and their operation needed to be as close to the original as possible, otherwise new permits would be required. Since Greensand is in very, very short supply, the media was changed to Greensand Plus from the same manufacturer. Sodium hypochlorite is used to continuously oxidize dissolved iron in the water coming into the filters. Also, these filters are very unique because they are much shorter than we normally manufacture. Our normal tank straightside is 60". These tanks are 36" straightside.
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| Three of Four Existing Manual Greensand Filters Showing Tank Corrosion |
What does the company do? Public water
What are the savings and/or ROI the customer wants to achieve? Not applicable. The customer is replacing old existing system with identical system
What are the operating conditions, e.g. flow, temp, continuous, etc.? 60 gpm, Well Water Intermittent Flow
What is the system configuration, e.g. # of tanks, standby units, etc.? Four greensand filters in parallel operation
Materials of construction of tanks, piping, valves, frame, etc.? ASME Code Steel Tanks, 6’ Diameter X 36” Shell straight-side , PVC glued with manual ball valves
Type of valves and actuators? Manual ball valves
Control philosophy? Backwash as required based upon differential pressure
Special Features? Short fat tanks, required to fit tight area
For Additional Information:
Greensand Filter Technical Bulletin
Greensand Plus Technical Data
For help sizing a new filter
For help repairing or rebedding a Greensand Filter
Friday, June 15, 2012
Iron and Manganese Removal Filter Shipped to Westchester County HQ
Res-Kem recently shipped a 52 gpm dual tank greensand filter to a Westchester County New York corporate headquarters campus. This filter uses greensand to remove dissolved and precipitated iron and manganese from the water coming from the local public water system.
Water Problem:
At a Westchester County corporate headquarters campus, about 4 to 5 times a year, our customer experiences water quality and quantity problems. The campus receives its water from a local public water supplier. High levels of iron and manganese are present within the public water distribution system, and peak flow events such as hydrant flushing or firefighting activities have caused brown water to be drawn into their water system. What exacerbates the problem is the campus is at the end of the water distribution system without looping.
Therefore, iron and manganese laden sediment accumulates the piping and is drawn into the campus drinking water system. Res-Kem designed and constructed a filtration system to remove iron and manganese from the drinking water, as well as a storage tank. The volume of the tank is 150,000 gallons which provides two days of storage in the event of a water emergency with the water supply.
System Solution:
For Additional Information:
Technical bulletin on Res-Kem's Greensand/Greensand Plus filters
Online catalog for Greensand Filter Systems
Technical bulletin on Greensand Plus filtration media for iron and manganese removal
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| Dual 36" Greensand Filters with Bray 31 Valves and Bray Series 93 Pneumatic Actuators |
At a Westchester County corporate headquarters campus, about 4 to 5 times a year, our customer experiences water quality and quantity problems. The campus receives its water from a local public water supplier. High levels of iron and manganese are present within the public water distribution system, and peak flow events such as hydrant flushing or firefighting activities have caused brown water to be drawn into their water system. What exacerbates the problem is the campus is at the end of the water distribution system without looping.
Therefore, iron and manganese laden sediment accumulates the piping and is drawn into the campus drinking water system. Res-Kem designed and constructed a filtration system to remove iron and manganese from the drinking water, as well as a storage tank. The volume of the tank is 150,000 gallons which provides two days of storage in the event of a water emergency with the water supply.
System Solution:
Inlet Iron and Manganese:
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|---|---|
Flow Operating Conditions:
| Typical: 52 gpm typical |
System Configuration:
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Control Valves:
| Bray Series 31 valves with Bray Series 93 actuators |
System Operation:
| Differential Pressure Switch initiates backwash cycle |
Added Features:
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For Additional Information:
Technical bulletin on Res-Kem's Greensand/Greensand Plus filters
Online catalog for Greensand Filter Systems
Technical bulletin on Greensand Plus filtration media for iron and manganese removal
Monday, April 30, 2007
Greensand Price Increase
The manufacturers of Manganese Greensand have just notified us that the price of Greensand will be going up on June 1, 2007. The price of GreensandPlus (TM) will not.
Manganese Greensand is used to remove soluble iron, manganese and hydrogen sulfide from well water supplies. Greensand has been an industry standard for over 50 years. Manganese Greensand bulletin.
GreensandPlus is the second generation of greensand. GreensandPlus is more rugged than the original but has identical operating characteristics. GreensandPlus is a purple-black filter media used for removing soluble iron, manganese, hydrogen sulfide, arsenic, and radium from well water supplies. GreensandPlus bulletin.
GreensandPlus has the same effective size, uniformity coefficient, density, weight, capacity, backwash and pressure drop curve. Therefore, it can be used as an exact substitute for Manganese Greensand. In addition, GreensandPlus is much more resistant to attrition from high differential pressure, and works well on waters that are low in silica, dissolved solids and total hardness. It can also be used in water over 70 degrees F without any degradation.
Greensand is a mined product and as many users of Greensand know, it is occasionally in short supply. Unlike Manganese Greensand, GreensandPlus is not dependent on the mining of glauconite and this results in reduced production time. Greensand Plus is readily available for purchase.
All Manganese Greensand shipped after June 1st will be subject to the new prices. Contact Res-Kem for availability and current and future pricing.
Res-Kem manufactures systems using greensand and GreensandPlus to remove soluble iron, manganese and hydrogen sulfide from well water supplies for municipal, commercial, and industrial applications.
GreensandPlus is a Registered Trademark of Inversand Company. 226 Atlantic Avenue Clayton, New Jersey 08312
Manganese Greensand is used to remove soluble iron, manganese and hydrogen sulfide from well water supplies. Greensand has been an industry standard for over 50 years. Manganese Greensand bulletin.
GreensandPlus is the second generation of greensand. GreensandPlus is more rugged than the original but has identical operating characteristics. GreensandPlus is a purple-black filter media used for removing soluble iron, manganese, hydrogen sulfide, arsenic, and radium from well water supplies. GreensandPlus bulletin.
GreensandPlus has the same effective size, uniformity coefficient, density, weight, capacity, backwash and pressure drop curve. Therefore, it can be used as an exact substitute for Manganese Greensand. In addition, GreensandPlus is much more resistant to attrition from high differential pressure, and works well on waters that are low in silica, dissolved solids and total hardness. It can also be used in water over 70 degrees F without any degradation.
Greensand is a mined product and as many users of Greensand know, it is occasionally in short supply. Unlike Manganese Greensand, GreensandPlus is not dependent on the mining of glauconite and this results in reduced production time. Greensand Plus is readily available for purchase.
All Manganese Greensand shipped after June 1st will be subject to the new prices. Contact Res-Kem for availability and current and future pricing.
Res-Kem manufactures systems using greensand and GreensandPlus to remove soluble iron, manganese and hydrogen sulfide from well water supplies for municipal, commercial, and industrial applications.
GreensandPlus is a Registered Trademark of Inversand Company. 226 Atlantic Avenue Clayton, New Jersey 08312
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