FI86292C - Domestic water treatment device for pressurized small-scale water installations - Google Patents

Description

‘86292

Domestic water treatment plant for pressurized water plants in small properties

The invention relates to a water treatment plant for use in connection with small-water wastewater treatment plants, wherein the raw water is taken from a well or the like and transferred treated to a pressure vessel for use.

This application relates to a previous patent "Domestic water treatment method for pressurized water 1 plants in a small property", FI-78143.

Water according to the above method s i 1.1. An open water test is added to a conventional small water pressurized water supply system and the water is treated intermittently using an existing pump for all transfer pumping. The intermittent treatment is carried out by means of a special valve, so that a low-pressure water pump (usually a water pump) is used to pump water from a well to a treatment tank in which is to filter in a dozen, eg sand, and whenever necessary with the same pump the valves '' are inverted and the treated water is transferred to the pressure tank of the pressurized water plant * during the emptying stage. The method is characterized in that: the existing pressurized water plant is utilized in its entirety.

*: The cleaning rinse of the filter mass in the treatment tank is carried out with a water: pressure blow in the opposite direction to the actual flow. Loose sludge-containing water is drained from the treatment tank.

• · ··. The above-mentioned method is thus characterized by e.g. the fact that • the water surface of the treatment tank moves up and down during the treatment cycles and that the cross-sectional area of the treatment tank is relatively small compared to e.g. biological filtration la i t ok s i in, 2 86292 to obtain a sufficient pressure shock to remove the sludge.

The previously known water treatment of a small property is represented by various pressure filters and open pool facilities. Pressure filters are filtration tanks connected in series to the water supply network, which contain at least the filtration mass and possibly aeration equipment, etc. Monitoring the actual condition of the pressure filters is difficult in practice and therefore often not done.

It is typical for open pool facilities to use two pumps, so that the well water is raised for treatment by one and the treated water is pumped to the pressure tank by another pump. The open pool plant is well suited for the removal of iron and manganese by the air-maeeae filtrate method, in addition to removing gases and impurities (turbidity) that are already in particulate form. In aeration, however, the power of the open plant is lower than that of the printing plant and therefore the output of the open plant per plant filtration pulp scale is lower than that of the printing plant. In manganese removal, the low pH of the water slows down the precipitation of manganese.

It is an object of the invention to provide a filtration plant having a state-of-the-art aeration capacity per filtration pulp unit, which is easy and safe to monitor and maintain, suitable for regeneration by said water pressure method and inexpensive with little modification to an existing plant.

By means of the device according to the invention, a decisive improvement in the above-mentioned drawbacks is achieved and the defined objectives are achieved. To achieve this, the device according to the invention is characterized by what is set forth in the characterizing part of claim 1.

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The most important advantages of the device according to the invention are e.g.

the device can be used to extend the lifespan of technically functional but iron and manganese pressurized water installations easily connected to a conventional pressurized installation either during the construction of the pressurized installation or afterwards the installation is easy to maintain does not require maintenance or parts to be purchased untreated or in case of failure itself and the water supply continues past the device, the device can be dimensioned in such a way that it is possible to carry in a wide variety of variations from a standard fire door in order to carry out case-specific special treatments.

In the following, the invention will be described in detail with reference to the accompanying figures.

Figure 1 shows an electrometric apparatus according to the invention; Fig. 2 shows a sectional view of the plant of Fig. 1; ; Figure 3 shows a valve structure according to the invention.

The device is a compact device package based on a quick filter support and includes a sand filtration part and an active pulp part. Sand filtration refers to permanent natural sand, either by rinsing: regenerating or regenerating by peeling, where the filtration process takes place. Active pulp refers to the consumable pulp chemically involved in the cleaning operation, for example limestone.

The quick filtration device, Figures 1 and 2, is characterized by the vertical position of the device. The device is a tower-like tank open from above, 4 86292 joeea from above is part of the active pulp <= limestone basket), on this side is service space 2, of which down is surface sediment space 3, part of mechanical filtration mass te. filter sand-Boiler 4, and the bottom space 5 below the base 14. On the side of the device there is an electrical control center and valve device 6, from which connection 7 to the pressure tank bottom pump, connection 8 to the pump pressure side and connection 9 to the pump for raw water suction pipe (parallel). The hot water is thus taken from the bottom space 5 via the bottom connection 15 and further through the valve equipment 6 and the pump outside the device, the connection 8 and the non-return valve 18 and the connection 7 to a pressure tank (not shown). The valve from the device 6 leaves the pipe 10 for the sprinkler 11 for the water to be treated. The hose 12 leaves the surface sediment space 3 to the drain 13, through which the sludge water removed by the pressure blow is removed.

A characteristic of a fast filtration solution is that the filtration rate, te. the surface load is determined by the flow of the pump when pumping water through the water spaces 1, 2 through the filters further into the pressure tank. The surface load is determined on a case-by-case basis and, if necessary, the consumption must be limited according to the maximum surface load that can be achieved under local conditions. When filling the water space, the pump flow can be high, because during pumping only the water level of the water space is raised. The basket of active mass 1 is located in the area where the up-down movement of the water surface typical of the method · 'takes place. During use, the active mass is alternately below the water surface and alternately above the water surface. Being above the water surface, for example in the form of crushed stone, the mass absorbs into its pores: air and when it falls below the water surface, air travels into the water.

*; If it is desired to improve the aeration during the filling phase of the water space, the pulp basket can be filled so that part of the pulp is * always above the water surface, whereby the water film from the sprinkler is fragmented into the crushed stone and the aeration is intensified by three separate methods. as a well air support (reminiscent of the so-called Dresden nozzle) when pouring the eadettajaeta, second In addition to what is mentioned in method patent FI-78143 for the age removal hose 12, the attachment point of the hose is at a height of the surface sediment space 3 such that when the hose is lowered, the basket of active pulp is completely above the water surface.

The basket of active pulp can be made, for example, from metal slats <waste games> by connecting the slats to the support structure of the car. The slats can be connected to the support structure, e.g. alternately from the ends, whereby by twisting the car support frame or tapping the car, the slats are moved relative to each other to clean the slat slots.

The strainer bottom 14 is a grille under the sand, the slats of which are loosely attached to each other and the grille is supported from below so that when the rinsing pressure strike comes from the bottom connection 15, the slats can move both upwards and relative to each other. and the slits in the grille are cleaned.

In addition to what is mentioned in the above-mentioned method patent FI-78143, the magnetic solenoid valve 17 of the device can be implemented with a horizontally moving valve solution as shown in Fig. 3.

The difference with the valve mentioned in said method patent is • that the operating movement of the valve is other than vertical and. * The inlet and outlet pipes of the valve are parallel in the wall of the valve housing. The structure of the vent t i i 1 i is obtained substantially alone. disposed using, for example, the lane solution of Figure 3 as a filling valve. * ♦ · «6 86292. Fig. 3 shows an electric control center 33, a magnet 34 having the function as described in the application Θ75436, a valve housing 35, a valve flap 36, an inlet pipe 37, an outlet pipe 38, a pressure relief opening 39 and a blade suspension 40. The suspension of the valve flap is implemented so that gravity or spring force partially closes the tube 37 and the tube 38 completely. This type of valve is always opened against the flow without pressure. The valve flap does not completely close the inlet 39. This arrangement stabilizes the closing and opening of the valve.

Typical features of the device solution are e.g. water recirculation in a plant in continuous circulation. Such a cycle takes place for a moment whenever pumping to the pressure vessel is started, when it is desired to ensure that no untreated water enters the consumption. In the case of, for example, acidic humus water, the water can be efficiently treated by slowly circulating the water in the bottom space 5 of the tank through the sprinkler 11 and thus UV irradiation (see FI-78143) and a limestone basket. Such quiet recirculation is achieved by keeping both solenoid valves open and lowering the engine speed. This is suitable, for example, for a two - speed short - circuit motor,:. of which the lower speed is used for this rest cycle.

. With such recycling, the UV radiation time of the water and the effect time of the alkali mass can be extended. Particularly in the case of UV radiation, recirculation improves the result, since UV rays penetrate the water effectively only over a very short distance. *. (less than 1 mm) and the irradiation is thus mainly effective on the film flowing from the precipitator.

: **. · Of course, rapid filtration can also be implemented in other formats, such as flat, equipment, but it is difficult to reliably perform a countercurrent rinsing with a relatively low and wide mass layer.

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Of course, the actual biological activity in the device according to Fig. 1 also takes place continuously, but not much can be relied on due to the high surface load and efficient flushing based on pressure shock. In the apparatus according to Figure 1, e.g. peeling of the surface of the filter sand from a high apparatus through a cramped service space 2, it is difficult, so that the basket of active pulp is loose and can be removed if necessary, e.g.

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Claims (4)

A water treatment apparatus for use in connection with a small-scale pressurized water plant when raw water is taken from a well or the like and treated by the aeration-rapid filtration method in an open space plant by intermittent treatment using one pump and valve arrangement the water film of the sprinkler (11) hits a basket of semipermeable material made of semipermeable material <1) filled with a suitable active filter mass and below said basket in this tank the mechanical pulp space (4) and the bottom space (5) from which the domestic water is taken, characterized in that said time division -during the operating cycles, the water level is controlled to move in the area of the active pulp basket (1), this filter mass in the form of crushed stone being completely or partially above or below the water surface, depending on the phase of the operating cycle in order to make the film aeration, the droplet aeration and the absorption aeration of the water at different stages at the same time and to keep the dissolution of the active mass at the desired value in each case. Water treatment device according to claim 1, characterized in that the dewatering hose (12) is connected to the tank casing of the water treatment device at a height at the precipitate space (3) between said filter mass basket <1) and mechanical filter mass (4). Water treatment device according to Claim 1 or 2, characterized in that the slats of the grille base (14) in the lower part of the filter tank are fastened to one another and to the filter tank support structures by loose fasteners to allow short movements of the slats when the rinsing water pressure strikes the bottom. 9 86292 Water treatment device according to one of the preceding claims, characterized in that the same water is recirculated in the plant to improve the suction-filtration result by time-division operation of the pump-valve system several times by keeping the controllable valves of the controlled valve device information (6) open several times. and operating the pump at either normal or reduced speed, with the water circulating from the bottom space (5) through the sprinkler (11) again through the filtration masses <1, 4).