USCG Certified Type II MSD & IMO Approved Sewage Treatment Systems and Plants
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Biological Systems The Tidal Wave is our original system. These systems use naturally occurring bacteria and the addition of oxygen to accelerate the natural biological process. The addition of a mild disinfectant solution at the end of the process ensures the complete kill of all harmful pathogens before discharge of the treated effluent. |
Chemical Systems The Tidal Wave HMX uses the addition of chlorine solution and oxygen to achieve a quick chemical oxidation of the waste. The chlorine required is generated from ordinary seawater, as it is passed through an electro catalytic cell included with the system. Inside the treatment system powerful jets of water aerate, and combine the incoming wastewater with the chlorine solution to reduce the solids and disinfect the wastewater. The final stage consists of a unique membrane process to ensure that this system exceeds all regulatory requirements. |
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At Headhunter all of our sewage treatment systems are U.S. Coast Guard certified Type II Marine Sanitation Device and IMO approved for worldwide compliance with Annex IV Regulation 3(1)(a)(i) of Marpol 73/78, which provides regulations for the prevention of pollution by sewage from ships. The units are accepted in accordance with Resolution MEPC.2(VI) which outlines the performance standards required.
As of 2010 our HMX Marine Sewage Plants are now approved to IMO MEPC 159(55) standards. The United States Coast Guard’s Marine Safety Center has issued Certificates of Approval for eight new models in Headhunter’s range of Tidal Wave HMX sewage treatment plants. These new models are approved according to the more stringent performance standard created by the United Nations International Maritime Organization (IMO) Marine Environmental Protection Committee (MEPC). This committee adopted Resolution MEPC 159(55) on October 13, 2006 with implementation on January 1, 2010. In response, the United States Coast Guard issued Navigation and Vessel Inspection Circular Number (NVIC) 1-09 in June 2009. This NVIC laid the procedural framework for the Marine Safety Center to evaluate testing labs and manufacturers according to the new IMO performance standards and a collection of even more rigorous mechanical, electrical and physical specifications outlined in 33CFR 159.015, and 159.53(b), and mechanical and electrical engineering standards detailed in 46CFR chapter F and J.
Sewage Definitions
Any discussion of sewage treatment should start with a brief definition and a summary of the regulatory requirements.
According to Annex IV Marpol 73/78 Regulation 1 it is defined as:
According to 40 CFR 140.1(A) it is defined as:
Human body wastes and the wastes from toilets and other receptacles intended to receive or retain body wastes.
The basic objective of sewage treatment is to reduce the solids and kill the bacteria. Different agencies specify different levels of treatment as outlined in the table below.
| Upper Limit Value For | USCG Type I | USCG Type II | Canada Great Lakes | IMO Marpol 73/78 |
| Suspended Solids (mg/liter) |
None Visible | 150 | 50 | 50 (In Lab) |
| Fecal Coliforms (per 100ml) |
1000 | 200 | 200 | 250 [100] |
| 5 Day BOD (mg/liter) |
Not Specified | Not Specified | 50 | 50 [25] |
| Residual Chlorine (mg/liter) |
Not Specified | Not Specified | 0.5 to 1.0 | To Degree Practicable [0.5] |
At Headhunter our marine sewage treatment plants meet the most up to date and stringent of certifications.
