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Author Topic: Rain water and river water system  (Read 20377 times)
peater
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« on: August 23, 2008, 09:00:58 PM »

Hi
I've had my system in operation for the last 4 months, however the planning goes back years! The 2 x 1000ltr tanks (photo shows manhole off one of the tanks,the outline of the manhole cover for the second can be seen). The tanks are supplied by the rain rainwater from the south/west roofs (the north roof being proone to algae). There are debris filters on each down pipe, tank overflow into surface water drain. The tanks were running unsupervised for about 3 years, when the covers were removed the water was clean and sparkling!  Other works went on in the house of supplying dedicated pipeworks to toilets (4) outside taps and washing machine. All pipe work marked as tank water. The water is taken up to the loft tank by a 700watt submersible pump controlled by a float switch in the loft tank. The weight of the loft tank is bourne on the masonary wall rather than the ceiling joists to reduce noise and weight. A tank tray was added just in case of spillage/leaks and is drained to the outside via a 32mm pipe.
The tray constucted of 18mm ply,treated and covered in a pond membrane. A 32mm waste fitted.
Backup water from the mains with the water inlet 40mm above the overflow, this fitted with an extended crank ball lever, which will only operate in the event of submersible pump failure. The mains waterinput also fitted with a double check valve. The water is treated with an ozone generator to eliminate bacteria. The water distrubution around the house via a water meter to check on useage levels.
In the event of rainwater starvation,a further float switch is fitted in the ground tanks, this operates a 1kw pump from a nearby river, extraction permission sought and no licence required. Unfortunately the pump wasn't self priming,so a little messing around, but once done, the prime remains (filter/valve at extraction point). So far no real issues to report!!!


* tank8.jpg (101.96 KB, 1024x768 - viewed 3364 times.)
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peater
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« Reply #1 on: August 23, 2008, 09:13:01 PM »

Tank tray before installation


* tray.jpg (92.76 KB, 849x768 - viewed 3438 times.)
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peater
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« Reply #2 on: August 23, 2008, 09:15:25 PM »

Water meter, tray drain, wall support brackets...


* tank3.jpg (110.4 KB, 1024x768 - viewed 3468 times.)
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peater
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« Reply #3 on: August 23, 2008, 09:17:40 PM »

pipes and pump mains supply entry....


* pipe entry.jpg (43.22 KB, 576x768 - viewed 3370 times.)
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peater
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« Reply #4 on: August 23, 2008, 09:19:10 PM »

pipes t'other side....


* pipe to loft.jpg (122.91 KB, 736x625 - viewed 3397 times.)
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peater
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« Reply #5 on: August 23, 2008, 09:20:58 PM »

Outside pipes 'hidden' inside a rainwater down pipe....


* pipe to loft1.jpg (70.63 KB, 576x768 - viewed 3335 times.)
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peater
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« Reply #6 on: August 23, 2008, 09:22:43 PM »

Pipe lower showing pump connection point and a garden tap supply....


* pipe2.jpg (82.88 KB, 576x768 - viewed 3332 times.)
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peater
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« Reply #7 on: August 23, 2008, 09:26:20 PM »

2x 1000ltr tanks under paving....


* tank storage.jpg (71.85 KB, 571x586 - viewed 3357 times.)
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peater
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« Reply #8 on: August 23, 2008, 09:30:56 PM »

ozone treatment in the loft tank.....


* tank7.jpg (95.18 KB, 1024x768 - viewed 3367 times.)
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peater
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« Reply #9 on: August 23, 2008, 09:33:42 PM »

Water distrubution from the loft......


* water distrubution.jpg (61.65 KB, 576x768 - viewed 3355 times.)
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peater
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« Reply #10 on: August 23, 2008, 09:35:50 PM »

parallel water pipe to toilets.....


* pipe change over.jpg (38.78 KB, 576x768 - viewed 3319 times.)
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peater
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« Reply #11 on: August 23, 2008, 09:43:22 PM »

pump ready for installing.... an old dishwasher drain pipe was ideal for the flexable delivery connection......

Thanks, all for now .......... Peater 


* tank pump1.jpg (90.69 KB, 627x606 - viewed 3439 times.)
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peater
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« Reply #12 on: August 23, 2008, 09:55:58 PM »

P.S  the small black wire seen dangling from the dummy rainwater pipe is an irrigation supply pipe. I later added an additional high level tank connection feeding a electric 2 way valve controlled by a timer for automatic hanging basket watering!!! Mind you, wasn't much use this year!  (it was intended a high level connection as this was the level of the pumped up water only, non operation under mains water backup).    Peater whistlie
« Last Edit: August 23, 2008, 09:58:22 PM by peater » Logged
Ivan
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« Reply #13 on: August 24, 2008, 01:19:33 AM »

Nice. I really must fit a rain water harvesting system. Shame my lack of water meter means no cost savings...
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Shay
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« Reply #14 on: August 24, 2008, 09:53:19 AM »

Excellent photos and setup!
How much electrcity does the ozone treatment consume?
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