Microbe-PLUS Block II:

• Reduces hydrogen sulfide and sludge buildup in lift stations
• Breaks down odor and grease compounds
• Automates lift station treatment without the cost of purchasing and maintaining a metering pump; has been formulated so that it releases its dose of bacteria gradually over a period of time in the high flow environment of the lift station wet well.

Since the sewage system is basically a gravity flow system, it requires periodic stations to lift the sewage from the level to which it has flowed back up to the surface so that it may flow a farther distance from gravity. In a lift station, the chamber into which the sewage first flows is the wet well.In the wet well "grease" tends to accumulate. This grease is really a combination of microbial biofilm and the insoluble accretions from the sewage as its velocity slows down. The grease can form a thick layer, eventually covering the surface of the wet well. When pieces break off they can damage the pumps, and the mass of material prevents the diffusion of oxygen, thus allowing a very large mass of material to become severely anaerobic.

Augmentation with Microbe-PLUS

The microbes in Microbe-PLUS Block II produces enzymes which will dissolve the biofilm which holds the "grease" together. This allows the other accretions to move with the stream of sewage, as was the intention of the engineers who designed the system. With a much reduced layer of film, it does not tend to sluff and there are no masses of solid grease to damage the pumps. Further, there is no massive amount of material on the walls to prevent oxygen from diffusing in most areas. The environmental area suitable for the growth of SRBs (sulfate-reducing bacteria) is, therefore much reduced and little or hydrogen sulfide (H2S) is produced. Since hydrogen sulfide is both toxic and corrosive, it is very important for each sewage manager to control its production. As hydrogen sulfide is also a nuisance for the citizen, it is politically important for public officials to be observed to be "doing something about it." Microbe-PLUS Block II also contains nutrients which are known to be deficient in grease. The addition of these nutrients greatly increases the efficient bacterial metabolism of the grease, making the observed result truly phenomenal.

Application

Sewage fed into wet wells by gravity mains will generally contain sufficient oxygen. If the lift station is fed by a force main, determine the length of residence time using the following measurements:

• Rate of flow
• Diameter of pipe
• Length of main

Instructions

Hang the block in the wet well so it is barely submerged when sewage volume is at its lowest. In wet wells with lower turbulence, hang one or more five pound blocks ton increase the surface area exposed to the flow of sewage.