Home made waste pump
Has anyone made a sewer waste pump from a house sink disposal from under the sink? I saw this someplace once and cant find it. Thank you in advance.
Forum Discussion
dougrainer wrote:
2. House Garbage disposals are NOT a PUMP. They just chew up material.
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As I stated, it does NOT PUMP. It is gravity fed and if you look at the link design, the Black and Gray tank are ABOVE the Insinkerator and when he fires it up it grinds and GRAVITY and the force of the black/Gray water from the upper tanks push the debris out the Insinkerator thru the drain hose. So, what I stated is correct. Home disposals only grind and they are 120 volt. RV 12 volt macerators GRIND and PUMP the debris. A PORTABLE 12 volt RV macerator is $195 on Amazon with fittings to match RV's. CHEAP Garbage disposals are $65 up to the better ones at $130, THEN you have to modify and make it fit and then supply 120 volts to the Contraption. While you could save very few dollars, the plain fact is, it is just a crazy thing to do. Doug
PS, that link, the guy has a septic tank and he just drains to his tank. Unless you have a septic tank, what good is this contraption? Very few homes have a easy sewer input. And you cannot legally drain sewer to land even in the country in most areas of the USA. I know in Texas, that is true. I had a Co-worker that lived 30 miles out in the country and got fined for discharging Washing machine water to the backyard of his home. A neighbor turned him in.
The centrifugal blades in the disposal act as a centrifugal pump impeller as they force the waste against the grinder plate. Did you miss the part where he held the hose up 7 feet high and it still pumped? This is not a new discovery, and according to various posts, quite a few folks have done the same thing with good results. It may seem crazy to you, but does in fact work quite well as others have posted. Try a Google search:
Waste disposal as an RV macerator
Using converted disposal at home would be as easy as sticking the hose through a window into a toilet if there's no sewer clean out available. Just as you could with a costly RV macerator. If you compare the parts in a waste disposal and a macerator pump, you'll see they're actually pretty similar. And if a ~$100 price difference is a "very few dollars" to you, that's great, but some of us have better uses for our money than overpaying for things we can easily make or modify ourselves.
