Our stocking cistern for rainwater
We could not find any concrete cistern already made. Neither small nor big. Every drinking water tank is made out of polyurethane or polyethylene. The tank we made with cement bricks 20 cm wide is covered by cement in the outside. In the inside we have used cement and lime. We put tiled floor at the bottom for cleaning more easily. There is one tank allowing the dirty rainwater to settle. The tank for the rainwater can receive 11000 l. The tank is covered by one layer of earth 50 cm depth to keep fresh the water. At the bottom of the tank, and before to put the cement layer, we put one polyethylene pipe to make the water running through it for refreshing one room in the house or as refrigerator, we don’t know yet.
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If you want to know more about rainwater cisterns:
Extracts from the front page of « Eautarcie » from Mr Joseph Orszagh.
Please click on your selected topic to be directly connected to its page.
Enhancing the value of rainwater
A) Building the cistern
B) The quality of rainwater
C) The bio-compatible water
D) Chlorine and water
E) Filtering rainwater
F) Making rainwater into drinkable water
G) Environmental impacts on « PLUVALOR system »
H) PLUVALOR in the city
Various information about rainwater cisterns:
http://ec-eau-logis.over-blog.net/categorie-885831.html
Analyse of our water from rain compare to drinking water reference in Spain
|
Parameters
|
Value
|
Units
|
Standard for drinking water
|
|
Colour
|
0,2
|
m-1
|
no standard
|
|
Smell
|
normal from 3 to 25°C
|
|
no standard
|
|
Turbidity
|
2
|
FNU
|
< 1
|
|
Conductivity
|
163,6
|
µS/cm
|
< 400
|
|
pH
|
7,53
|
-
|
6,5 à 9,5
|
|
Ammonium
|
0,017
|
mg/l de NH4+
|
< 0,5
|
|
Nitrites ions
|
0,020
|
mg/l de NO2-
|
< 0,5
|
|
Global Germs
At 22°C
At 37°C
|
40
38
|
ufc/ml
ufc/ml
|
< 100
< 100
|
|
Escherichia coli
|
absence
|
ufc/ml
|
absence
|
|
Coliformes totaux
|
absence
|
ufc/ml
|
absence
|
|
Coliformes fécaux
|
absence
|
ufc/ml
|
absence
|
|
