Building a septic tank for a static trailer

[lord mud of the flyes]

Hi

Would like to build a septic tank for a static trailer

 

The trailer will need moving once ever blue moon. So the tank will need to be emptied by a waste manengment company. Trouble is i dont know how a waste managment company would empty it and what kind of equipment they carry

[nod]

If you are allowed a septic tank and not a treatment plant like most 

It would be easier to buy a fiberglass or plastic tank Dig a hole and drop it in 

If you build a traditional type tank It will have to be well away from the caravan 

 

Emptying is simple Tanker Suction hose 

[Duncan62]

I use IBC tanks. One below invert for toilets etc. 3 above ground. Pump from one to other three in turn about once a month. 

Water removal is simple suction hose as mentioned above.

[saveasteading]

3 hours ago, lord mud of the flyes said:

dont know how a waste managment company would empty it and what kind of equipment they carry

It's a tanker with a variety of hoses so they'll use a wide hose when possible and  narrow one if necessary. They'd want to be within about 20m of the tank.

[ProDave]

I have seen a low profile treatment plant designed to slide under the limited space under a static caravan.  I will see if I can find it.

 

Here it is  https://www.theseptictankstore.co.uk/shop/marsh-portapura-m2-sewage-treatment-plant-2-person/

 

When you want to move the 'van, get the treatment plant pumped out and you can move that to the new location as well.

[lord mud of the flyes]

22 hours ago, nod said:

 

Emptying is simple Tanker Suction hose 

Dose that mean it has to be emptied fro the top of the tank and not the bottom?

[lord mud of the flyes]

21 hours ago, Duncan62 said:

I use IBC tanks. One below invert for toilets etc. 3 above ground. Pump from one to other three in turn about once a month. 

Water removal is simple suction hose as mentioned above.

Again where is the whole for them to access this?

[lord mud of the flyes]

20 hours ago, saveasteading said:

It's a tanker with a variety of hoses so they'll use a wide hose when possible and  narrow one if necessary. They'd want to be within about 20m of the tank.

But do they suck out from the top with a vacume cleaning wand type pipe? or from under the tank; if so what couplings do they use?

[lord mud of the flyes]

20 hours ago, ProDave said:

I have seen a low profile treatment plant designed to slide under the limited space under a static caravan.  I will see if I can find it.

 

Here it is  https://www.theseptictankstore.co.uk/shop/marsh-portapura-m2-sewage-treatment-plant-2-person/

 

When you want to move the 'van, get the treatment plant pumped out and you can move that to the new location as well.

Sorry but that money is well out of budget!

 

But there are 3 holes in the top of that tank; what do they do?

 

Thanks

[nod]

1 hour ago, lord mud of the flyes said:

Dose that mean it has to be emptied fro the top of the tank and not the bottom?

Normally the top 

Bit messy from the bottom 

[Duncan62]

2 hours ago, lord mud of the flyes said:

Again where is the whole for them to access this?

Yes from the top. No coupler. It is simply an industrial vacuum. Any hole with diameter 15cm or greater will work.

[lord mud of the flyes]

11 hours ago, Duncan62 said:

Yes from the top. No coupler. It is simply an industrial vacuum. Any hole with diameter 15cm or greater will work.

Well that may be difficult then as the tank sits under the trailer

[saveasteading]

3 hours ago, lord mud of the flyes said:

tank sits under the trailer

There's usually a side cap too. I'm recollecting helping to clean my drains. One of the suction pipes easily went along a 100mm drain, so I think it was about 60mm OD.

[lord mud of the flyes]

10 hours ago, saveasteading said:

There's usually a side cap too. I'm recollecting helping to clean my drains. One of the suction pipes easily went along a 100mm drain, so I think it was about 60mm OD.

This is to be a home build tank. But it would be nice to see a diagram of a tank as you say with a side cap on it.

 

You say 60mm, is that the hole they would suck the waste from?

[saveasteading]

60mm pipe. But that is approx, from distant memory.

Why not extend the tank slightly and have cap on top?

[lord mud of the flyes]

On 19/01/2024 at 10:28, saveasteading said:

 

Why not extend the tank slightly and have cap on top?

Where about from the diagram would you put it?

[saveasteading]

Near the top.

[lord mud of the flyes]

21 hours ago, saveasteading said:

Near the top.

But these no room to fit!

Edited January 22, 2024 by lord mud of the flyes

[ProDave]

2 hours ago, lord mud of the flyes said:

But these no room to fit!

Because you are trying to design it using a big fat round barrel.  There is a reason the one I linked to designed for the job is larger, but a lot flatter.

[lord mud of the flyes]

5 hours ago, ProDave said:

Because you are trying to design it using a big fat round barrel.  There is a reason the one I linked to designed for the job is larger, but a lot flatter.

Even still with one of those tanks; how would I get access to it, if the top was right under the trailer flooring

[lord mud of the flyes]

OK best forget about it then

 

Buy!