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Re: plmr49er post# 15916

Saturday, 12/27/2008 10:19:43 PM

Saturday, December 27, 2008 10:19:43 PM

Post# of 41961
Compensated Awareness Post View Disclaimer
Here's a good read on their technology and how it actually works.

Technology

treating system (CCETS). The CCETS separates solids (inorganic and organic) from waste liquids using a chemically enhanced physical treatment process. Suspended solids typically consist of large solids, settleable by gravity alone, and nonsettleable material, often colloidal in nature.

Removal is generally accomplished by chemical addition, coagulation, flocculation, sedimentation and separation of solids (sludge) and clarified water (effluent). The combination of these five distinct processes is referred to as water clarification. Treatment occurs in a closed system, operating under low pressure to maintain positive flow through the process. Since the system is closed, the process operator doesn't come into contact with the waste stream (which may contain harmful bacteria and chemicals).

The CCETS consists of:
(a) A pump for grinding solids and pumping ground solids and liquid effluent;
(b) An inlet for introducing flocculant and coagulants into the ground solids and liquid effluent;
(c) A mixing chamber with an inlet connected to the pump outlet. The mixing chamber is of sufficient length to allow the flocculant and coagulants to fully mix with the solids and liquid effluent and form flocs which settle from the liquid effluent;
(d) A settling chamber connected to the mixing chamber outlet. The settling chamber promotes laminar flow to the solids and liquid effluent and has sufficient length to allow the flocs in the liquid to settle from the effluent;
(e) A mechanical propulsion device for moving the solids and liquid effluent through the length of the settling chamber; and
(f) A clarifier chamber connected to an outlet of the settling chamber. The clarifier chamber separates flocs from the liquid effluent.

The entire clarification process is divided into three stages:

I. In the first stage, raw sewage is ground and then pumped into a special mixing chamber. In the mixing chamber, the ground sewage is treated with chemicals. The chemicals are introduced in a manner which ensures rapid and complete mixing with the sewage prior to entering the special slow mix chamber. One option is to introduce the chemicals at the pump. Another preferred approach is to introduce the chemicals in a rapid mix (dynamic or static) located immediately upstream of the special mixing chamber. The effluent and chemicals are subjected to varying fluid velocities that are program- controlled to optimize flocculation and settling of the solids from the supernatant liquid.

II. In the second stage, the flocculated suspended solids, which are now termed sludge, pass along the settling chamber and settle at the bottom of the chamber. At the end of the settling chamber, they are removed from the system. Clear supernatant water is drawn off the top. The supernatant is sufficiently clear and innocuous so that it may be safely released to surface water without causing contamination.

III. Depending upon the desired water quality and end-user requirements, a final treatment stage may be added. Advanced microbiological filtration and disinfectant processes may be used to remove remaining fine particles, thus reducing chemical oxygen demand and microbiological elements to acceptable levels.




To obtain safe drinking water, two additional processes are required: reverse osmosis and Ultraviolet (UV) light treatment. Reverse osmosis occurs when water is moved across a membrane against the concentration gradient, from lower concentration to higher concentration. UV light treatment is used to remove chlorine, polychlorinated biphenyls, lead, trichloroethylene, ethylene dibromide, and e-Coli bacteria, as well as over 50 additional chemical contaminants and pesticides which are on the EPA's Primary Health-Related Contaminants list for drinking water. These extra steps ensure that water dispensed by the UV filtration system meets the highest safety and cleanliness standards for drinking water.



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