The Humphrey® Sewage Treatment System
Type II Marine Sanitation Devices
It’s all about the choices…
Smart choices produce advantages.
Every engineer appreciates that design is a process of choices. For some, choices mean tradeoffs-a little more strength, but added weight. As you look at some of the choices made in the design of The HUMPHREY®, consider how each choice saves money for you:
Flexible
Workable
Lightweight
Non-Corrosive
Cost-Effective
Customer Friendly
Continuous refinement
All Humphrey® Sewage Treatment Systems start with field-proven technologies.
The product that will serve you is the result of continuous upgrading and refinement. We will be eager to hear how The Humphrey is performing in your particular environment. It is by listening to customers like you that we have developed and refined a user-friendly model line fully prepared to meet water quality requirements in the 21st Century.
How it works
Sewage flows from the head(s) directly into the Primary digester (D1), a Secondary digester (D2), and a Filter (F1). As the sewage makes its way through a series of baffles in each digester, it is broken down and dissolved by natural bacterial action. The resulting effluent is then pumped through the filter when the float switch in the final compartment of the secondary digester is activated. Here the effluent is further purified and deodorized before passing through the disinfecting system, where final purification takes place. Periodically, a biodegradable activator is introduced into the head. Humphrey Activator consists of a yeast compound to stimulate bacteria growth and an enzyme compound to liquefy solids. Activated carbon filters may be washed, reused, and eventually replaced after service life has expired.
An optional control panel and autofeeder are available to monitor the system and replenish activator when necessary. The autofeeder mounts easily in the vent piping of the primary digestor. It automatically dispenses activator in the proper intervals to ensure the system will keep operating efficiently. Shipboard power is used with the autofeeder.
The Humphrey® Type II MSD’s are fully certified by the USCG and are IMO* approved. Each Humphrey unit exceeds the effluent standard set by Pollution Act Federal Water (33 CFR 159) and carries our Certification Number – to ensure absolute compliance with Federal laws. Because of the possibility of future changes in the law, The Humphrey® is designed to yield effluent actually higher in quality than currently required by the USCG.
The Model 12, designed for use by camp and small boat owners, was never submitted for IMO approval.
Humphrey® choices
…add up to reduced total operating costs!
I.M.O.*/USCG approved
(No. 159.015/5403/0) meets or exceeds Federal standards (33 CFR 159)
Outstanding size-to-performance ratio
you can fit several Humphreys inside other Type II designs
Modular design creates flexible installation options
stack or separate components, creating space where you need it.
True marine construction
using non-corrosive materials – Do you really want another source of rust below decks?
Low maintenance
periodic flush of activator & a spot check; uses fresh or saltwater
Significant weight savings
equal or superior performance from smaller, lightweight units
*Certified by the USCG, the Model 12 was designed for use by camp and small boat owners, and thus was not submitted for IMO approval. It is favored by camp owners in Louisiana as an ideal solution for compliance with new state regulations.
More improvements from Humphrey Marine!
For models 10A, 10B, 12
Humphrey Marine has been a recognized leader in the field of sewage treatment for years. Now in keeping with a tradition of providing economical and dependable service Humphrey Marine introduces a line of monitor panels and automatic feeders for Humphrey sewage treatment systems.
The Humphrey® Monitor Panel
provides you with an early warning alarm of any blockage problems associated with your Humphrey Marine Sanitation Device. Both visual and audible alarms are used so you can find a problem before it gets out of hand.
The Humphrey® Autofeeder
uses a simple design that mounts easily in the vent piping of the primary digester. The Humphrey Autofeeder will automatically dispense the Humphrey activator in the proper intervals to ensure that your system will keep operating at peak efficiency.
