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Waste Tank


wilros

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Really you are are asking the impossible. Fill a tank with fatty water and food waste and let it stand for a day or two in summer and its going to smell. Its always going to be a bit whiffy when you drain down

 

A well designed drain layout should have water traps just like main drains to stop the smell getting into the living area. This can be achieved by arranging the the pipe run into a smooth shallow curve close to the various inlets or by fitting P traps close to them but not all 'vans have traps. There are special caravan P traps that take up less space than the full size items.

 

See: http://www.leisurelines.net/waste-smell-trap-20mm-34-hose-409-p.asp

 

It helps to have smooth bore pipework. Some of the wire reinforced type is just a long food particle trap. The better sort have the wire outside.

 

See: http://www.leisurelines.net/1-12-38mm-supaflex-black--mtr-297-p.asp

 

 

 

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Hi Wilros & welcome to the forum

As George stated you will breed smells in the waste tank. There are a few chemical treatment products available in Motohome / Caravan accessory stores, but once the tank is emptied, try 2 x 2 litres of the cheapest Coke you can find & put that in. Then go for a run to swill it about in the tank. Amazing what that will dislodge.

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To remove smells that I think we all get from time to time from the waste tank I use the cheapest brands of supermarket Coke. Worked a treat for us in Austria in September, paid 26 cents for a 2 Lt bottle used the pop in two 1Lt's for a clean tank. Lasted a few weeks each time. Just tip down the sink in our case it was the bathroom sink that the bad smell came out.

Try this as it costs so little. We now keep a bottle in our van and you can even drink it yourself if needed LOL.

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The waste-water tank cleaning product that's probably most well-known is Thetford's "Tank Freshener".

 

http://www.thetford-europe.com/en/products/care-products/toilet-maintenance-products/tank-freshener.aspx

 

The time-honoured method if the tank starts to smell is to pour household bleach down the sink, wash-basin and shower-tray drain-holes into a part-filled tank, leave it for a day or two and then drive the motorhome around for a bit to slosh the bleach solution well over the tank's inside. That will certainly remove muck from the pipework/tank.

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Keep the tank clean and it will not smell.

 

If it's smelly a good dollop of cheap bleach, add half a tank of water, drive it around on twisty roads for 10 minutes and drain it out should get it clean even if you have to do it twice. Just make sure the bleach is cleaned off of any stainless steel as it can corrode it.

 

Then just make sure you drain it after use and flush it out with Mark 1 Chlorinated Tapolene from time to time and there should be no need for faffing about with expensive chemicals.

 

Mind you I've only been doing that for forty years so I could be wrong!

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