DE1517552C - Water purification or waste water treatment plant - Google Patents

Description

3 4

6 is a partial section through a third circumferential bridge 19 suspended, the running guide shape of which the invention; and . wheels 20 run on the pelvic crown 21. the

Fig. 7 is a section along the line BB in bridge is by means of a motor (not shown)

6. Drivable on an impeller 20.

In a basin 1 there is an inlet tower 1 α . 5 The clarified water is arranged through drainage channels 22 which form a mixing zone 2. This mixing is removed and fed to a collecting channel 23 arranged outside below the basin zone from an inner and an outer crown 21, reaction or flocculation chamber 3 or 4 around which is provided with an outlet 24. The discharge channels, which in turn are arranged on a support ring 25 by a sedimentation channel 22, are surrounded by chamber 5. . io The in F i g. 3 to 5 illustrated embodiment

The inlet tower has at its upper end reveals that with a construction according to

• Outlet openings 6 and in its lower part of the invention a removal device for

Inlet openings 7. In the inlet tower la floating matter can be provided in a simple manner

a screw conveyor works 8. Below the inlet can.

Laufturmesla a mud sump 9 is arranged. 15 At normal water level 30 the clarified occurs A raw water inlet 10 protrudes into the inlet tower. In this embodiment, water has a parallel outlet to the raw water inlet 10 there is an opening 45 in the drainage channels 22. Included Arranged sludge vent 11, floating matter is retained in the sludge and not sump 9 protrudes and removed by means of a gate valve.

bersl2 is lockable. ao The occasional clearing of the floating matter er -.... The screw conveyor 8 is by means of a drive plug-in slide 44 at the outer ends of the drain motor 13 via a continuously variable transmission 14 that follows after closing a normally open end of the inlet tower 1 α 22 can be driven by means of a device attached to the bridge 19. . Floating material blade 32 and a floating

The sedimentation chamber 5 is separated from the outer ^a 5 scraper 33 and a controllable overflow reaction or flocculation chamber 4 by a weir 40. When the slide valve 44 is closed, the vertical partition 15 is separated, which accumulates the water until the water level Distance is arranged above the pool floor, 31 is reached, since the water must now overflow from the lower end of the outer reaction run rim 46. Then there are the chamber 4 liquid in the sedimentation chamber 5 3o floating matter so high above the drainage channels that it can enter. The reaction chambers 3 and 4 are no longer covered by them. They are separated from each other by an annular partition 16, which is now separated in the area of the floating material, the upper and lower area between the material clearing shield 32, which guides the floating material into the rotating area of the outer and inner reaction chamber 4 of the floating material scraper 33, or 3 inclined radially inward are formed and 35 of which they have a sloping wall 33 α and the overflow weir 40 which folds over in the illustrated embodiment in the floating material of truncated cone jackets. Through this outlet 42 promotes. The weir 40 is formed by the inlet and outlet of the inner control rail 38 attached to the bridge 19, reaction chamber 3 of a narrower cross-section than that via a control roller 39 against the weight of the rest of the reaction chamber 3 Liquid escaping downwards 6 always gets closed when the other part in the outer reaction chamber 4 in the direction of movement of one part in the inner reaction chamber 3 and floating material scraper 33 in front of it predominantly small solid particles catch 42 arrive. During the rest of the time and not yet fully formed flocs predominantly 45, the weir 40 remains in the folded up position into the inner chamber, while in the larger position, so that the water remains dammed up to the water level. Complex and fully formed flocs predominantly 31.

enter the outer reaction chamber 4. The in the scraper 33 is on by means of joints 35 on the inner reaction chamber reaching particles of the bridge 19 hinged arms 34 are pivotable have fastened in the actual chamber space at an angle of 5 °, so that when moving over the Relatively large cross-section, time to continue upward floating material drainage device enlarge. You can get essentially full-soft. A rope 36 limits the downward constantly back to the mixing chamber. movement of the arms 34 and thus lays the lowest position

Also the one in the outer reaction chamber 4 of the scraper firmly.

stepping particles can react further. A 55 The in F i g. 6 and 7 illustrated embodiment Part of these particles gets back into the mixing differs from that according to FIG. 1 in chamber and is there with the smaller particles primarily in that at the lower end of the Einder inner chamber and the raw water running tower 1 α in the vertical and radial direction mixes and activates the flocculation of the colloidal baffles 5β arranged there through ler particles. Some of these larger flakes 60 are avoided in the mixing chamber comes from the outer reaction chamber 4 into the water located rotates with the screw, Sedimentation chamber 5, from which to be conveyed to sediment instead of upwards. The separating animals The clarified water is extracted from these particles between the inner and outer walls men can be. Reaction chamber 3 and 4 is at their upper and

The sedimented particles are removed from the lower ends with one each by means of spindles in

Sludge clearing device 17 the sludge sump 9 adjustable ring 51 or

leads. The sludge clearing unit 17 is provided with a 52, the upper one preferably with a

torsion-resistant support structure 18 is formed on a V-shaped cross section. By

changing the position of the adjusting rings can adjust the inflow to the inner or outer reaction chamber and thus also the return can be varied.

The mud sump 9 of the embodiment according to FIG. 6 is provided with stirring blades 53 and vertical ones Krählstäben 54 equipped by a motor 57 via a transmission gear 56 and a Worm drive 55 are driven. The arrangement of the sludge vent 11 at the lower end of the Sludge sump 9 expediently allows the sludge to be removed quickly.

For this purpose 2 sheets of drawings

Claims (3)

1 2 away. The non-recirculated portion comes from the patent claims: reaction zone in the sedimentation zone, in which the heavier solids sink and 1. Water treatment or wastewater floating matter collects on the surface, handling system with a center arranged 5 In the known systems, there is the reaction network Mixing zone, in which one from bottom to zone consists of a single reaction chamber. From Above working conveying device arranged this reaction zone escaping quantities entist, a concentric reac- holding coarse and fine flakes, and there is none tion or flocculation zone, which is from above as far as possible, to prevent not being fully extended is flowed through, and one of these um- io formed flakes get into the sedimentation zone, giving sedimentation zone as well as one of fully developed flakes again the sludge recirculation taking place below are fed into the mixing zone. Mixing zone, characterized in that the invention is therefore based on the object that the reaction zone is so eccentric in at least two conical systems of the type mentioned at the outset arranged to form from top to bottom 15 that a separation of the flow through from the reaction The reaction chambers (3, 4) are divided into the zone exiting flakes in such a way that it can be ensured that smaller flakes 2. Device according to claim 1, characterized in that they are predominantly conveyed back into the mixing zone, indicates that the upper and / or lower, while large flakes are predominantly the sedimentary area the dividing wall (16) between the outer 20 station zone. Ren and the inner reaction chamber radially. This object is thereby achieved according to the invention is designed inclined inward, preferably in that the reaction zone in at least two L Shape of a truncated cone jacket. concentrically arranged, from top to bottom 3. Apparatus according to claim 1 and 2, through which the flow-through reaction chambers are divided.
characterized by at the top and / or bottom 35. Surprisingly, it has been shown that the edge of the partition (16) is adjustable guide- predominant part of the larger flakes at this wall, preferably an adjusting ring (51 , 52). while the majority of the smaller flok • ken in the mixing zone and thus in the circuit 30 is returned and these flakes are given the opportunity to enter the sedimentation zone develop to full size. The invention relates to a water reservoir According to an advantageous feature of the invention sewer or wastewater treatment plant with one can be the upper and / or the lower in the middle arranged mixing zone in which a 35 area of the dividing wall between the outer and from bottom to top working conveyor of the inner reaction chamber arranged radially inward is, a concentrically arranged tends to be formed and preferably the shape Reaction or flocculation zone, which has a truncated cone jacket from above. In this way is flowed through below, and one of these surrounds the inner reaction chamber receives an inlet den Sedimentation zone as well as one from below and one outlet opening with relatively following sludge return into the mixing zone. small cross-section, which makes the separation larger Such designs are favored, for example, from that of smaller flakes. The outer reaction chamber occurring predominantly in Austrian Patent Application 197 290, which Fran- larger l French patent specification 1028 981 and the German particles there have the opportunity to apply to the ge-Auslegeschrift 1200 758 known. 45 desired size, while the previous . Such systems are used to prevent the water entering the inner reaction chamber Finely divided mineral flakes containing waste water are fed back into the mixing zone and organic solids or other contaminants. tends to separate in the form of sludge. Most advantageously, on the top and / or flocculants are added, the adjustable guide of the same name at the bottom of the partition wall Electrically charged walls to be separated, preferably one particle each in the axial direction unloaded, so that an agglomeration of a sliding adjusting ring may be provided. this larger complexes, d. H. a flocculation, allows the influencing of the transverse opening can take place. This requires a certain reaction section at the inlet and outlet of the inner time, which depends on the pH value of the water, the viscosity 55 reaction chamber and thus an influence on the and the temperature depends. Circulatory. The flocculation is thereby reduced by recirculation. Some embodiments are shown in the drawing already excreted sludge suspension, which is therefore represented by the invention, for example,
already flakes with a larger surface. Fig. 1 is a section through an embodiment has, in the water to be treated or waste water 60 of the invention; , promoted. Figure 2 is a top plan view of the article The mixture of water to be treated or the FIG. 1; Waste water and recirculated sludge suspension Fig. 3 is a partial section of the pool edge of a is conveyed upwards in the mixing zone and the second embodiment; when mixed, leaves the mixing zone at the top 65 F i g. 4 is a top plan view of the article End and is in the area surrounding the mixing zone of FIG. 3; Reaction or flocculation zone under reaction; and Figure 5 is a side view of the article Enlargement of the solid particles downwards in FIG. 3;