DE2734531C2 - Device for adjusting the carbonate hardness and the salt content of water - Google Patents

Description

Air blower and work without branching off a carbonated partial flow and, above all, the immediacy of the line connection to one between the trickle degasser and the collecting tank vacancy with all its advantages is not given.

The invention is described in more detail below using a preferred exemplary embodiment. The only drawing shows a full-scale side view of the Riesler with dashed and dash-dotted lines internals shown.

The Riesler 27 shown in the drawing can replace the Riesler 27 of the first honored Reference to be incorporated. Also the line 23 coming from the left for the to be degassed The main stream has the same reference number as there also the output line 25 of the fan, not shown, which blows air in. The branch line 22 coming from the cation exchanger is installed from the left and from the right the lime water pipe 39 coming from the lime deposit. The ends of the branch pipe 22 and the lime water pipe 39 are each other on the inside of the edge 47 of a funnel 46 by 180 ° offset opposite. Above them, a perforated bottom 44 made of plastic is firmly welded to the horizontally prevents the trickling filter arranged above it in the Riesler 27 from falling

Below the mouth of the branch line 22 and the lime water line 39 is a circular funnel 46 attached with its edge 47 in the Riesler 27. The funnel 46 itself is not permeable, so it does not consist of perforated material. In the middle, however, it has a circular funnel outlet 48. The Ί "inclination is small, so that the residence time of the liquids remains sufficiently long

Below the funnel outlet 48 a circular overflow pan 49 is provided, the edge 51 of which is bent up If the diameter of the funnel outlet 48 is e.g. B. 310 mm in the exemplary embodiment is then the Overflow pan diameter 440 mm. Since the funnel outlet 48 and the overflow pan 49 are coaxial are arranged, the liquids coming from the funnel outlet 48 first fall into the overflow pan 49, mix there again and then fall over the edge 51 of the overflow pan 49 completely downwards. The overflow pan 49 is supported by feet 52.

1 sheet of drawings

Claims (1)

1
Claim: Device for setting the carbonate hardness as well as the salt content of water in which the Raw water passed through one or more acidic cation exchangers, free carbon dioxide in one Riesler removed in countercurrent with air blown in by a fan and the desired Carbonate hardness is produced by adding a liquid, whereby the free carbonic acid is im Riesler can be removed with air blown in with a constant volume: will, lime water of a certain constant concentration in a shared container below the Riesler an acidic, at least carbonated partial stream is mixed, which is in the container Carbonate solution produced during implementation in the desired amount that from the Riesler flowing water is supplied, a branch is provided after the cation exchanger whose one branch leads to the Riesler and whose other branch leads to a partial volume having a flow rate meter and leading to the receptacle, and a conduit from one Lime saturator leads to the container, which is preceded by a further flow rate meter, d a through characterized in that under a perforated bottom (44) of a Riesler (27) and over a Funnel (46), the edge (47) of which is connected in a watertight manner to the inner wall of the ll'.iesler (27), just under jo above the funnel edge diametrically opposite the ends of one of one Cation exchanger coming branch line (22) and a lime water line (39) arranged are and that further under a funnel outlet (48) coaxial with. this one overflow pan (49) is located. 40 The invention relates to a device for adjusting the carbonate hardness and the salt content of Watering in which the raw water is passed through one or more acidic calcium ion exchangers, free Carbonic acid is removed in a Riesler in countercurrent with air blown in by a fan and the Desired carbonate hardness is produced by adding a liquid, whereby the free carbonic acid in the Riesler is removed by blowing air with constant volume, lime water of a certain constant concentration in a shared container below the Riesler an acidic, at least carbonated substream is mixed, which is in the container at the Implementation of the resulting carbonate solution in the desired amount of that flowing out of the Riesler Water is supplied, after the cation exchanger a branch is provided, one branch of which leads to the Riesler and its partial volume (> o leading other branch a flow meter and ;; u leads to the container, and wherein a line from a lime saturator to the container leads, which is preceded by a further flow meter. Such a device is already known from DE-OS 59 774. With her is as for the lime water and the partial flow branched off downstream of the cation exchanger is a common container with a view to the implementation in carbonate solution used a sufficiently long line. However, it has been shown that such a line clogs too quickly From AT-PS 2 93 294 a device for adjusting the carbonate hardness is known, in which the from A trickle of flowing water with an acidic water branched off behind a cation exchanger Partial flow is reunited in a collecting container and that from the collecting container by means of a The water taken from the feed pump is mixed with lime water in a separate mixing chamber, whereby the outlet of the Riesler is immersed in a water seal and has no inclined funnel in this known device degassed the partial flow relaxing in the Riesler in the Riesler, in the water seal, in the collecting container and in the area of the feed pump so strong and so uneven that in the Mixing chamber for the reaction with the lime water supplied from a lime saturator only a little Carbon dioxide is available and there are strong fluctuations in carbonate hardness behind the mixing chamber. In addition, there is also the risk of the pipe connections clogging up on the mixing chamber. From DE-AS 12 53182 it is known to have a Lime water supply in the middle lying between a trickle degasser and a collecting tank Provide section of a vertical pipe that has a with its upper end in the trickle degasser Creates collecting space and surrounded with its lower end by a jacket tube designed as a chicane immersed in the collecting container. The invention is based on the object of a non-clogging and nevertheless the complete one Implementation of lime water with an acidic partial flow in a carbonate solution ensuring a container to create without giving up the advantages of the already known device. According to the invention, this object is achieved in that a container is formed by a funnel, the edge of which is watertightly connected to the inner wall of a Riesler, centered under the funnel an overflow pan is located, which has a larger diameter than the funnel outlet, and that of a line coming from a lime saturator and the branch line coming from a cation exchanger open diametrically opposite each other just above the funnel. With the solution according to the invention, not only is the lime water quickly becoming unusable the acid-containing partial flow in the carbonate solution converting container avoided, but also that Significant carbon dioxide losses occur from the partial flow branched off downstream of the cation exchanger and the associated fluctuations in carbonate hardness. Namely, it will be the carbonated one Partial flow from the branch line with the lime water from the line coming from the lime saturator is extremely high brought together early and effectively on the inclined surface of the funnel and, in addition, that from the Riesler trickling down onto the inclined surface of the funnel and through the funnel outlet into the overflow pan Main stream of water used to accelerate the implementation. In this situation, the device according to the invention is supported by the prior art indicated above not suggested, because these known devices for adjusting the carbonate hardness with an adjustable