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Author Topic: Grey water teatment  (Read 3975 times)
Loir
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« on: June 14, 2016, 03:22:28 PM »

I collect rainwater and water from our shower in a tank for watering the garden. Great!

But it smells bad most of the time!

Is there something I can put in the water that will make it small better, that will not do the plants any harm?

Preferably fairly cheap.


Many thanks,
Loir
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Moxi
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« Reply #1 on: June 14, 2016, 03:46:26 PM »

Hi Loir,

What does the water smell of?

Does the container you collect the water in have any debris/ sludge on the bottom or in suspension?

It will be good to know these answers before attempting to resolve the problem as different mechanism's may be causing the smell and eliminating the right mechanism is crucial to sweet smelling water.

Moxi
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billi
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« Reply #2 on: June 14, 2016, 04:12:30 PM »

A reedbed upfront ....perhaps
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Loir
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« Reply #3 on: June 14, 2016, 04:14:09 PM »

Hi Moxi,


It smells like something rotten, not a dead animal, more like rotten eggs.

There is some dark suspension in the water.

Loir
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HalcyonRichard
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« Reply #4 on: June 14, 2016, 04:43:02 PM »

Hi Loir,
           I think Bob Flower reccomends pottasium permanganate to clean up the water. If you google pottasium permanganate water butt it should come up with lots of suggestions.

Richard
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dhaslam
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« Reply #5 on: June 14, 2016, 05:20:27 PM »

The other thing is  to avoid the  water tank  being in direct sunlight.   Some bacteria thrive  in warm temperatures and  that probably  includes  those originating from shower waste. 

http://www.disknet.com/indiana_biolab/b062.htm
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Loir
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« Reply #6 on: June 14, 2016, 05:40:52 PM »

Thanks Richard, I have just ordered some potassium permanganate.

I will see how it goes.

Loir
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skyewright
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« Reply #7 on: June 14, 2016, 06:24:31 PM »

In addition to treatment (e.g.  potassium permanganate)...

I collect rainwater and water from our shower in a tank for watering the garden.
Any chance you could separate those two types of water, and make sure you always use the grey water ASAP, so it's only the rain water that hangs around for any length of time?
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Loir
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« Reply #8 on: June 14, 2016, 10:36:36 PM »

The rain water and the bathroom drains go into one hopper on the kitchen roof then down to my water tank diverter.

I don't have room to separate them though I have thought about this.

Loir
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Moxi
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« Reply #9 on: June 15, 2016, 02:00:52 PM »

Hi Loir,

Sounds like you have some anaerobic sulphide producing bacteria which have probably carried over from your grey water source traps.  Potassium permanganate will kill these off as already mentioned but if you want to avoid chemical treatment you can always use an aeration pump to keep the water oxygenated. This will eliminate the odour you speak of and the aerator can be picked up from any pond or tropical fish centre, nothing big just a trickle of air to agitate and stop the water stagnating.

An alternative which requires no energy input other than daylight would be to lower a basket of oxygenating pond weed in to the barrel to aerate the water and absorb all those lovely nutrients from the shower bath and sink preferentially to the nasty anaerobic bacteria? again aquatic pond centres in garden centres etc should be a source of suitable media or if you know your oxygenators from your algae's you may be able to source some from a local pond or river but make sure you have permission and that its safe to do so ; )

Moxi
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Loir
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« Reply #10 on: July 17, 2016, 06:11:51 PM »

I have been using potassium permanganate for a while. It fixes the smell and doesn't seem to have killed any plants. Smiley
Thanks for all the replies.

Loir
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