Reply
 
Thread Tools Display Modes
 
Old 07-24-2011, 06:53 PM   #1
Guru
 
Arctic Traveller's Avatar


 
City: Juneau Alaska
Country: USA
Vessel Name: Arctic Traveller
Vessel Model: Defever 49 RPH
Join Date: Oct 2007
Posts: 619
A queston for Rick B

Lately, I've had a lot of problems with MSD systems aboard small cruise vessels.* Years ago my first experience was with Orca systems and they proved to need a lot of maintenance.* Lately I've been maintaining a system that uses an electrolizing high voltage book cell, and it seems to need even more maintenance, (taking the cell apart once a week to clean) not to mention using 500 to 1000lbs of salt a week.* The salt is needed due to the grey water being plumbed into the black water tank, reducing the salt content needed for the book cell.* What in your experience is the most reliable system with a capacity of about 50 to 100 people?* I'd sure like to find a system that uses bleach rather than salt, and one that efectively back flushes itself elimating the regular disassembly.*** Arctic Traveller
__________________
Advertisement

Arctic Traveller is offline   Reply With Quote
Old 07-24-2011, 07:03 PM   #2
Senior Member
 
Join Date: Oct 2007
Posts: 158
RE: A queston for Rick B

Boy, just mention you dumped bleach in the water and the USCG will have a field day with you.

Have you looked in to the compose type heads?
__________________

El Sea is offline   Reply With Quote
Old 07-25-2011, 04:06 AM   #3
Scraping Paint
 
City: Fort Lauderdale
Vessel Model: CHB 48 Zodiac YL 4.2
Join Date: Oct 2007
Posts: 3,804
RE: A queston for Rick B

Arctic: A PM is on the way
RickB is offline   Reply With Quote
Old 07-25-2011, 11:08 AM   #4
Guru
 
Arctic Traveller's Avatar


 
City: Juneau Alaska
Country: USA
Vessel Name: Arctic Traveller
Vessel Model: Defever 49 RPH
Join Date: Oct 2007
Posts: 619
RE: A queston for Rick B

Quote:
El Sea wrote:
Boy, just mention you dumped bleach in the water and the USCG will have a field day with you.

*
*Actually, disinfecting black water with bleach is a Coast Guard approved method, and is in use in several systems.* Those that place electrodes in the waste water actually dis-associtate sodium hypocloride (I think thats what is, but I'm not a chemist) from the sea water. It's a substance similar to chlorine.* Other units use bleach injection directly into the waste.** I'm guessing that the amount is so little as to not be a concern..........Arctic Traveller
Arctic Traveller is offline   Reply With Quote
Old 07-25-2011, 12:20 PM   #5
Guru
 
Phil Fill's Avatar
 
City: Everett Wa
Country: US
Vessel Name: Eagle
Vessel Model: Roughwater 58 pilot house
Join Date: Oct 2007
Posts: 2,919
RE: A queston for Rick B

We have a Microphor sanitation system which is sort of like a septic tank *the last process is passing through a chlorine chamber before going over board.* In the marina we use the holding tank and get pump every week to keep the marina happy.
Phil Fill is offline   Reply With Quote
Old 07-25-2011, 10:10 PM   #6
Guru
 
Edelweiss's Avatar
 
City: PNW
Country: USA
Vessel Model: 1976 Californian Tricabin LRC
Join Date: May 2011
Posts: 1,834
RE: A queston for Rick B

Phil fill

Wow glad to hear I'm not the only one sporting a septic system. *I have an original Microphor system too and love it. * *All my boating friends turn their noses up at it and say I should just have a storage tank and pump out.*Once I got it working right I have had very little trouble with it and no smell. *I love to laugh at them as they drag the honeydew pump- out cart up and down the dock.*

What I found here was that most of the Coast Guard folk and USCGA inspectors know little to nothing about the Micophor systems, since they were built before they were born, *and I always have to show them to USCG approval tag and the ceritification letter to convince them it's still legal. *(The updated approval letters are available online from the Microphor website.)

FYI: Also I get my clorine tablets from a swimming pool supplier now.

Larry B
Edelweiss is offline   Reply With Quote
Old 07-25-2011, 10:26 PM   #7
Veteran Member
 
waterhawk's Avatar
 
Join Date: Jul 2011
Posts: 90
A queston for Rick B

Quote:
Edelweiss wrote:
Phil fill

Wow glad to hear I'm not the only one sporting a septic system. *I have an original Microphor system too and love it. * *All my boating friends turn their noses up at it and say I should just have a storage tank and pump out.*Once I got it working right I have had very little trouble with it and no smell. *I love to laugh at them as they drag the honeydew pump- out cart up and down the dock.*

What I found here was that most of the Coast Guard folk and USCGA inspectors know little to nothing about the Micophor systems, since they were built before they were born, *and I always have to show them to USCG approval tag and the ceritification letter to convince them it's still legal. *(The updated approval letters are available online from the Microphor website.)

FYI: Also I get my clorine tablets from a swimming pool supplier now.

Larry B
*Sounds interesting... and am interested in details..

I don't understand when you say septic and chlorine in same sentence.* A proper septic system has bacteria that breaks down sewage (VERY EFFICIENTLY I might add) but when you add chlorine to the mix,, you might as well be pumping raw sewage...

Which is why many people are wondering why they have to get their dirt septic sytems pumped out every few years,* because of the darn chlorinated municipal supplied (cholorine/fluoride(editorial) laced water...

Have to respect our little friends' jobs* (the good bacteria)

-- Edited by waterhawk on Monday 25th of July 2011 10:28:57 PM


-- Edited by waterhawk on Monday 25th of July 2011 10:31:02 PM
waterhawk is offline   Reply With Quote
Old 07-25-2011, 11:31 PM   #8
Guru
 
Edelweiss's Avatar
 
City: PNW
Country: USA
Vessel Model: 1976 Californian Tricabin LRC
Join Date: May 2011
Posts: 1,834
A queston for Rick B

Most buried home septic systems are anaerobic (without oxygen) systems; Anaerobic microbe strains digest and settle out the solids in a tank and then drain the effluent into the soil to be filtered by mother nature.*
Marine septic or treatment systems are aerobic (with oxygen) and support the growth of organisms (bacteria) present in the human body to digest the waste.*
Solid organic waste is converted to liquid and carbon dioxide gas.* The gas is vented out of the boat and the liquid passes slowly through a fiber medium in the tank.* The remaining treated liquid passes through a pipe out the bottom of the tank into the chlorinator chamber which contains chlorine tablets.* The chlorinated liquid then passes into a small pump tank and is eventually pumped over the side. *Surprisingly a very simple and trouble free system that mostly works by gravity. *The only moving parts are the pump and switch in the pump over tank.
The home system will tolerate normal levels of clorine in water and from household cleaning chemicals. *But in the marine system, not so much. *It is very sensitive to clorine and many cleaning chemicals would kill the bacteria in the tank. *


-- Edited by Edelweiss on Tuesday 26th of July 2011 08:00:56 PM
Edelweiss is offline   Reply With Quote
Old 07-26-2011, 09:57 AM   #9
Guru
 
Phil Fill's Avatar
 
City: Everett Wa
Country: US
Vessel Name: Eagle
Vessel Model: Roughwater 58 pilot house
Join Date: Oct 2007
Posts: 2,919
A queston for Rick B

Our Microphor is all gravity as our engine room is about 6 ft tall. I flush the microphor with fresh water, fill the chlorine chamber and we start using it.* Nothing to added or electrical power.*They are*used more on commmercial boats than*pleasure.* *http://microphor.com/html/sanitation-marine.html
*
In the marina we do use the holding tank and get pumped out.* There has been a couple of time the holding tank was full, so switch to the Microphor for a couple of days.* *


-- Edited by Phil Fill on Tuesday 26th of July 2011 10:05:39 AM
Phil Fill is offline   Reply With Quote
Old 07-26-2011, 07:59 PM   #10
Guru
 
Edelweiss's Avatar
 
City: PNW
Country: USA
Vessel Model: 1976 Californian Tricabin LRC
Join Date: May 2011
Posts: 1,834
RE: A queston for Rick B

That's great Phil, I wish mine was above the waterline so I could get rid of the pump, as the chlorine attacks the plastic pump and float switch, eventually eating through the seals every 4 or 5 years. *I have thought about lifting the main tank up 12 inches, so I could free flow the effluent too. *Some day, we'll see!! *

I'm in and out of the marina enough that we can empty the pump tank fairly regularly and we're close to the marina's office and heads, so no problem with using our heads at the dock and overfilling the tank.

You mentioned flushing the tank with fresh water? *I have never done that, *is that something they recommend? *

*In 1977, I was told by the boat dealer that my tank was full of Redwood bark strips which acts as a filter medium. *Looking through the inspection hatch, I can see there is some sort of stranded fiber in the tank alright, but I'm not so sure it came from a Redwood tree and I'm not about to pull some out to exam it closely. LOL *
__________________

Edelweiss is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off





All times are GMT -5. The time now is 12:47 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2006 - 2012