ECOS / EWS ~ How Does It Work?

An Overview of ElectroCoagulation

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Electrocoagulation (EC), also known as radio frequency diathermy or shortwave electrolysis, is an electrochemical method used to essentially “deconstruct” wastewater components through exposure to a controlled direct-current (DC) electrical field. in the presence of this field, microscopic solids that are present in the water drop out of solution and attach to each other, creating a higher concentration of solids in either a batch or flow process.

Upon exiting the EC, the influent is transferred over into dissolved water flotation (DWF) tanks where water is dissolved into its elements of hydrogen and oxygen, thus forming micro bubbles.

During the EC process, oil separates from water and rises to the surface.

During the EC process, oil separates from water and rises to the surface.

As these bubbles float toward the surface, they attach to flocculated solute particles (contaminants and/or oil), and where they gather on the surface, forming a mat in which can be skimmed and directed for collection,

How Does it Work?

Oily wastewater is composed of suspended oily lipid droplets in water, interspersed with solid particles and dissolved compounds, each having different molecular weights, chemistry, and electrical charges. These electrical charges can be measured as the zeta potential, and tend to keep oily lipid droplets, solid particles and dissolved compounds from interacting chemically.

Electrical charges tend to form a semi-stable emulsion (similar to milk), which is difficult to separate. However, under suitable conditions of a controlled and carefully-applied DC voltage and current (patent pending), several unique electro-chemical effects result:

  1. Coalescing Super Coagulation ~ ECOPOD powered by OriginClear (ECOS) neutralizes the charges surrounding the lipid droplets, allowing them to quickly coalesce and “super-coagulate” out of an emulsion. This applies to both heavy and aromatic hydrocarbons, with specific results dependent on molecular compound weights and their concentration within the fluid system.
  2. Chemical Oxidation ~ ECOS creates free hydroxyl (OH-) radicals in solution which rapidly and aggressively combine with oily lipids, particulates and dissolved compounds, depending on their indvidual chemistries.
  3. In particular, ECOS has the potential to break down complex organic molecules, including high molecular weight compounds that may be resistant to other forms of treatment (such as pesticides, herbicides, dyes, and wet-process chemicals).
  4. ECOS works on many dissolved metals by forming stable metallic oxides which rapidly precipitate from solution as particles which allows a high level of removal and directly reduces chemical oxygen demand in some waste water cases.
  5. Biological inactivation ~ ECOS free hydroxyl (OH-) radicals rapidly and aggressively combine with and destroy bacteria, viruses, cysts, macrophages and other biological contaminants, similar in effect to using ozone, but at a level of magnitude better. Depending on water chemistry and its contact time, inactivation is achievable. This biological inactivation potential is being used by the US military as a pre-treatment with reverse-osmosis (RO) to prevent biological warfare on water supplies.
  6. ECOS has achieved nearly unobtainable water efficiencies (short of distillation and thermal dissociation which is far more complex and expensive). In order to evaluate the applicability of ECOS to particular wastewater process streams, a thorough and detailed water chemistry analysis should be conducted along with a volume sampling for bench testing to confirm theoretical prediction of treatment efficiency.

 

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ECT Services and Solutions, Inc. – is a licensee for North America of OriginClear Systems. ECT is strategically in-house procuring the R&D and the Deployment of OriginClear’s Electro Water Separation™ systems and applications. ECT’s roll-out entails linking EWS applications on the front end and back-end of produce water applications in Bakersfield California. As ECT platforms the EWS solutions with ECT R&D and know ECT will joint venture with service providers nationwide to replicate the ECT Kern County Pilot within the Oil & Gas industries.