Packaged Secondary Treatment Systems
TEII - Secondary

We are creating an ideal environment to grow micro-organisms using the domestic waste as their food.  We call this our "treatment town".

The TEII Secondary Treatment System is a biological process which oxidizes the domestic wastewater in the treatment stream using an extended aeration process, which is a modification of the standard activated sludge process. Under the conditions of flow and domestic wastewater BOD5 loadings, a high quality effluent can be achieved. The basic design concept is an extended aeration period that is approximately 24 to 36 hours, coupled with a defined settling period that is approximately four to six hours.

The extended aeration process, which occurs in the aeration chamber, oxidizes the sewage by the destruction of the organic compounds using air to mix and oxidize the volatile material into gas, water, carbon and sludge. By the continued aeration of these concentrated solids, biological organisms are produced and grow in colonies. These colonies, known as flock, will attach themselves to the volatile materials breaking it down into water, carbon dioxide and ash. The result being a clear and odor-free effluent. The same thing happens in streams and rivers. When waste enters a stream, the dissolved oxygen in water decreases and the bacterial population increases. As the wastewater moves down stream, the bacteria will consume all organic material in time.
Basically we are doing the same thing as Mother Nature does, but by a confined space called the aeration chamber and the settling zone called a clarifier. This provides an environment for bacterial growth to produce and consume organic materials. The difference is that we do it faster.  In other words, we are creating a babbling brook concept with our system.
	In this confined, babbling brook, there are micro-colonies, known as flock.  They attach themselves to the particles of waste in the wastewater stream and digest the particles as their food base.
Where are the systems used? How are they manufactured? How are they transported to the site? How are they installed? Engineering Data

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