Villagepump 500 Standard, Руководство по эксплуатации и обслуживанию

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O&M Manual v.1.42 October 2017
25
7 Protocol water analysis
For the analysis of the water quality, please follow the protocol below.
The protocol covers two cases:
1. Preliminary analysis before deploying the Villagepump in order to establish a suitable
water source;
2. Regular analysis of the RAW and TREATED water after deployment.
In all circumstances use sterile sample bottles, preferably supplied by the laboratory
conducting the tests.
7.1 Preliminary analysis
Test the raw water for:
1. Toxic substances like Arsenic (As), Mercury (Hg) and Fluoride (F)
2. Pesticides, like Organophosphates, Carbonates and Organochlorides.
3. Non-oxidized (heavy) metals like: Cadmium (Cd), Calcium (Ca), Chromium (Cr), Copper
(Cu), Iron (Fe), Lead (Pb), Magnesium (Mg), Nickel (Ni) Sodium (Na) and Zinc (Zn).
4. Nitrates (NO
2,
NO
3
)
The resulting levels should be compared to WHO standards. If the levels measured are
above WHO (or national) standards, please contact Villagepump BV. Possibly we can advise
you on acceptable solutions available.
7.2 Regular Analysis
Given a positive preliminary analysis, the focus in this case will be on bacteriologic fouling
(Total Coliform and E.coli). Total Coliform is a group of bacteria present all around us,
most
of which are not dangerous to human health. However, these bacteria are not naturally
present in groundwater and are an indication that more harmful organisms might be present
(E.coli and F.coli). The latter two forms of bacteria pose an immediate risk to human health.
In order to be able to perform a consistent test, the following procedure should be followed.
1. Disinfect the system by following the procedure described at par. 7.2.
2. Pump at least two backwash cycles are completed.
3.
Sterilise the tap (flaming).
Procedure: Remove the plastic flow gauze (with the special flow gauze key, part of the
tool set). Heat the stainless steel tap with a butane or propane burner until it is quite hot.
If you stroke the pump handle a little bit of steam should be visible.
Note: If the tap is fitted out with an external aerator or return valve, unscrew this part
before heating the tap because it contains plastic parts that cannot resist the
heat!
4. Take a sample IMMEDIATELY after flaming the tap, using the sterile sample bottle
provided by the laboratory and close the bottle.