Hydropur Technical Files

32, avenue des Mimosas, B-1150, Brussels, Belgium



Easy Maintenance -- Limited Cost -- Functional Characteristics -- Technical Data -- Applications -- A Valuable Solution -- Working Schema


Easy Maintenance Kept to the Minimum

1) Additives in Tablets Form
THe apparatus requires the use of two chemicals only, which are supplied as tablets of different dimensions in order to avoid any confusion. These chemicals are just put into the chlorination/ floccunating system at intervals varying not in function of the flow rate but of the quality of the water already purified. The chlorination tablets have a unit weight of about 120g with a chlorine content of about 70%.



2) The Sand Filter
The sand filter is gradually growing dirty in function of the amount and quality of the water being treated. The device is equipped with with a patented automatic rising system that starts as soon as the filter is excessively clogged. The cleaning system in the top tank completely washes out the filter while the suspended matters are eliminated. The wash water, although containing sediments, is chlorinated and thus free of bacteria.
The interruption of the drinking water supply is thus rather short and depends essentially upon the time required to fill again the apparatus, after the automatic back wash operation which lasts only one and a half minutes.

3) Active Carbon
Replacing the active carbon layer is a very easy operation, requiring only 2 hours and being carried out at intervals of 1 to 3 years accordung to the application conditions. In some cases of intensive use, a more frequent refilling might be necessary and the advuce of the technical service should be sought.

A Limited Cost Price: A Nearly Unlimited Servicelife

The direct cost of water production is moderate; it includes: the flocculant and calcium hypochlorite tablets required for adequate running of the apparatus as well as the replacement in due time of the dechlorinating active carbon layer.
The apparatus is entirely made of stainless steel and food-compatible plastics, in such a way that no damage is likely to occur during its very long service life.


Functional Characteristics of Hydropur

A few typical purification performances achieved with hydropur.
Flow Rate: 0,5 to 2m^3/h; average flow rate: 1 m^3/h.
NB: The results reported hereafter are indicative only. they are averages of numerous long-run tests carried out on several rivers; different purification rates can obviously occur in other application conditions.






Technical Data Technical: size; height: 2m; diameter: 0,80m - Weight: 200kg. Body in food-compatible stainless steel 304. Interior components in food-compatible PVC. The ideal solution for: small communities (1000 to 3000 people) small communities depending upon natural sources in European countries technical or scientific expeditions in uninhabited areas drinking water supply in case of disease (flooding, earthquake, etc.)

The Applications of Hydropur

The Hydropur apparatus can treat any raw water having physico - chemical characteristics not over those listed in the Euronorm A2 and make it perfectly drinkable.

The flow rate depends, on the one hand, upon the available raw water flow rate (that can be rather small in case of manual topping) and, on the other hand, on the rate of pollution of this raw water (as a very polluted water might require a decrease of the maximum flow rate).

Consequently the flow rate is, practically speaking, comprised between 0,5 and 2m^3/h.
The potential applications of this device are numerous.

In mediterranean, tropical and sub-tropical countries where no water distribution networks exist and where the water supply sources are often contaminated, one single Hydropur apparatus can supply drinking water to a village of 1000-3000 people, whereby the diseases prevailing in these areas and mainly propagated by water could be prevented. In European countries, in the remote locations where a distribution network would lead to prohibitive costs, this device makes it possible to produce drinking water right on the spot.

In a similar way, small communities which were always depending on a natural source being now polluted could offer a drinking water supply to the inhavitants at limited cost, even if the number of users is rather small.

In a similar way, small communities which were always depending on a natural source being now polluted could offer a drinking water supply to the inhabitants at limited cost, even if the number of users is rather small.

In case of disasters, when the distribution network does no longer supply drinking water, the Hydropur apparatus can be quickly installed in order to achieve an emergency drinking water supply, e.g. in case sesms, hurricanes, floodings, etc...

The Hydropur is a really valuable solution


Because of its remarkable characteristics:

• limited purchase price
• complete elimination of any mechanical component (pumps, motors, valves, etc.)
• fully independent and automatic running by the force of gravity without any energy consumption (no gas, no oil, no electric power)
• long service-life of the operators
• minimum maintenance operations
• controlled water quality


All apparatuses are factory filled with their filtering beds kept in place by a soluble binder and are individually tested to eliminated any manufacturing defects.

Working Schema of Hydropur

This apparatus of simple design and easy use is equipped with an automatic self-cleaning system; the essential operation consists in adding regularly chlorination and, if necessary, flocculation tablets.
This system combines various reliable techniques: chlorination, sand filters and dechlorination on active carbon.
Water is introduced at the top of the apparatus (+/- 2,15m above ground level). The chlorination and flocculation products are added. The dosage of these products is kept constant and accurate whichever the flow-rate variation might be. Water runs into a tank where it stays long enough to permit floccule formation and water purification through chlorine.
Water flows then through a special sand filter where nearly all suspended matters are retained as well as the flocculated impurities. Clear and chlorinated water flows then into the large top tank where the contact time is sufficient for eliminating all bacteria and viruses contained in the water.
Water flows through an active carbon layer which removes any chlorine taste as well as the chloramines. The water treated this way is perfectly drinkable, as long as the raw water composition is not over the A2 level, as foreseen by the relevant European standard and if the flow rate doesn't exceed about 2 m^3/h.



Easy Maintenance -- Limited Cost -- Functional Characteristics -- Technical Data -- Applications -- A Valuable Solution -- Working Schema