Pennington Equipment Company

Combined manhole insert for odor control and inflow protectors

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Source: Pennington Equipment Company

Combined Manhole Inserts for Odor Control and Inflow Protectors in Boroughs, Towns and Cities are a must in today’s GREEN World.

Nearly all municipalities suffer with odor problems from Manholes and Inflow to manholes. During dry weather Manholes can be the source of vile sewer odors. The main odor culprit is Hydrogen Sulfide (H2S), but other malodorous compounds are present, as well. Systems for treating air usually require electrical power and/or clean water. Sealing covers moves the problem down the line or through the vents of neighboring homes and business. During rainy weather, an average Manhole allows slugloads from 4,000 to 12,000 gallons per day of rainwater, to enter the treatment system. Manhole inserts with odor control media and Inflow Protectors eliminate both problems, while built-in pressure relief valves allow the Manhole to “breathe.”

Combined Inflow Protectors and Manhole Inserts are an Economical Solution to EPA storm water regulations running into lakes, rivers, and other waterways, and can promote Economic Growth. Storm water treatment cost is a major problem. The Environmental Industry is being called upon to insure that storm water is treated efficiently.

Combined Inflow Protectors and Manhole Inserts that are filled with Xpellets chemical media is used to absorb oils, PCBs, and other toxins while disinfecting water that passes through them. Xpellets are Silica Gel impregnated with Chlorine Dioxide. Chlorine Dioxide is more effective than Chlorine against Viruses, Bacteria, and Protozoa- including the Cysts of Giardia and the Oocysts of Cryptosporidium. Chlorine Dioxide Technology is used as an oxidant for phenol destruction in the storm water stream as well as the sensible solution for commercial odor control.

Combined Manhole Inserts and Inflow protection must have a design to provide generous venting through the patented oxidizing and polishing Xpallet chemical media. Oxidation is accomplished with Chlorine Dioxide Technology. For example, one pound is equivalent in oxidation power to 2.5 pounds of Chlorine. Because Chlorine Dioxide reacts selectively and primarily with only the most offensive odor producing compounds of Hydrogen Sulfide, Organic Sulfurs, and Organic Amines, it will normally provide a longer service life in commercial application than Activated Carbon alone while addressing a similar broad-spectrum malodor control. Unwanted reactions do not occur. Power is not needlessly spent. Chlorine Dioxide remains available and ready on demand.

Polishing is accomplished with Zeocarbon Technology that protects against the escape of malodors, which cannot be readily oxidized by the Chlorine Dioxide media. It incorporates polymeric absorption and electrostatic bonding technologies. Polishing after oxidization is accomplished by keeping the Zeocarbon media separated from the Xpellet media. The result is safe, it utilizes the same material approved for food storage by the United States Department of Agriculture, extremely effective, broad-spectrum malodor control.

Several U.S. manufacturers make combined Manhole Inserts and Inflow Protectors to exact size from virtually indestructible material. They are simple to install, long lasting product that eliminates Oil, Grease, and Bacteria from rain water before discharge from the collection system, and they eliminate odors from the Manholes and no more Manhole cover rattle noise.

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