FI68039C - RENINGSAGGREGAT FOER VAETSKA - Google Patents

Description

ΓΒ1 ANNOUNCEMENT / · ρΠ7η LBJ (11) UTLÄGGNINGSSKRIFT OOUO? 9 r®j pCipf C (45) '..... * (51) Kv.lk.4 / lnt.CI.' C 02 F 3/06 FINLAND —FINLAND (21) Patent application - Patcntansökning 771 ^ 68 (22 ) Application date - Ansökningsdag 10.05 * 77 (Fl) (23) Starting date - Giltighctsdag 10.05 * 77 (41) Has become public - Blivit offentlig 1 ^ .11 .77

National Board of Patents and Registration Date of publication and date of publication. -

Patent and registration authorities in the United States and other Member States of publication 29.03 * 85 (32) (33) (31) Requested privilege — Bcgärd priority 13.05.76 Sweden-Sweden (SE) 7605 ^ 90-7 (71) Rotorsystem Miljö AB , Fack, 56200 Norrahammar, Sweden-Sverige (SE) (72) Tord Svensson, Jönköping, Sweden-Sweden (SE) (7 * 0 Yrjänä Vuori (5 * 0 Liquid Purification Equipment) - Reningsaggregat för vätska a plant in which the effluent is pumped from coarse sedimentation and in which, after purification has been carried out, 25 can be lowered to a suitable receiving device It is previously known to build biological platforms or biotowers in which the substrate material of the active microorganisms is stone, plastic, etc. is that the available surface cannot be used to its full potential 30. For example, when using stacked tiles horizontally or slightly from the horizontal, on which the drained liquid spills from the top slab itself, it is mainly lower. evalle, etc. are not used as a substrate for microorganisms and are therefore not involved in the process. With diagonally placed corrugated tiles, the liquid drains along the half-tube-shaped channels, and in this case too there is no talk of controlled spreading of the liquid or utilization of the entire surface of the tiles 2 68039. Since the effective tile surface completely determines the cleaning power, there are thus major drawbacks to the previously known cleaning devices of this kind, since the construction volume becomes very large and, as a result, it is very expensive to obtain the necessary cleaning power. Another disadvantage of these devices is the inability to fully flush out dead microorganisms and residual products. As a result, such a thick disc of microorganisms accumulates on the tiles that oxygen cannot spread to the bottom of the biological keto, creating anaerobic conditions and large rafts of decaying material detached from the tiles. In this case, the microorganisms necessary for the ptossess are also disintegrated, and the purification process is no longer completely under control.

A better result is obtained by pumping a liquid, from a chamber or well in which the coarsest impurities have been separated, into the top of a plate pack consisting of vertical, tightly spaced corrugated tiles 20 which act as microorganism substrates. However, this also does not prevent the formation of a microorganism ketone. In the present invention, part of the liquid is constantly circulating on the tiles over and over again. The orientation of the tiles in the treatment plant allows for full-flush rinsing of microorganisms and residual products, so that active biomass is always present in the process. The surface tension distributes water over the entire tile surface. The tiles are positioned so that all water particles pass through the cleaning equipment in a completely controlled manner. Fluid 30 makes a sinusoidal motion from top to bottom. After biological purification, the liquid is passed through a post-sludge tank to a receiving device, etc. The advantages obtained in the form of a high purification efficiency, but also as a result of a well-assembled unit which can be suitably immersed in a well, are obtained when the device is made according to claim 1.

An example of the implementation of the cleaning apparatus will be described below with reference to the accompanying drawings, in which Figure 1 shows a cleaning apparatus embedded in a well, Figure 2 shows the design of the tiles and the mutual arrangement in Figure 3 shows the cleaning apparatus in cross section.

Figure 1 shows the location of the cleaning equipment in the well 25 with its partitions 26. The impure liquid is introduced into the well along the inlet line 27 to a pre-sedimentation tank 28, where the coarsest and solid impurities are separated. The pre-sedimentation tank 28 also forms a buffer space 10 at the top of the incoming flow. After coarse sedimentation, the liquid is pumped by a mammoth pump 19 in the cleaning equipment of the lid 2, where the cones 3 distribute the liquid to the plates 5. Due to the surface tension, all surfaces in the jacket 1 receive thin liquid. due to the distribution, the liquid has time to go through an extensive biological purification on its way through the purification plant after coming into contact with the gelatinous layer formed on the surface of the corrugated tiles, which contains a large amount of microorganisms. The liquid flowing out of the treatment plant is slurry and is therefore first passed through the post-sedimentation tank 29 down the guide chute 7, after which it leaves the well out of the down-pipe 30 before being discharged into the receiving device. The liquid is recirculated a few times, via a mammoth pump 13, so that a rinsing effect is obtained so strong that the plates 5 remain free of the thick layer which arises, for example, in previously known devices.

The mutual arrangement of the tiles according to Fig. 2 shows that the corrugations 31 and the corrugations 32, respectively, are arranged parallel to each other and at such distances that the corrugation 31 always covers the corrugation 32 in the vertical position 35. This prevents any liquid tiles. The slits 6 are provided by the spacings of the tiles 5.

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The cleaning apparatus according to Figure 3 has an outer jacket 1 with four rectangular walls and a tight lid 2, the shape of which consists of small cones 3, such as in an "egg box".

The part between the casing 1 and the cover 2 is formed by a retracted edge 4 which forms a support and a holder for the plates 5. The plates 5 are provided with intermediate edges which create gaps 6 between the plates. The plates 5 are detached and locked in place by the locking edge 8. The guide trough 7 is fixed to the jacket 1 by locking devices 11a at an additional edge. The guide trough 7 is provided with a longitudinal opening 10 for ventilation and likewise with a longitudinal opening 11 for directing the cleaned liquid away. The guide chute 7 15 is provided on a vertical tilting side 12 for increased sedimentation power. From the lower part of the guide chute, a mammoth pump 13 with inlet pipes 14 is connected by a seal 15 to the cover 2. The mammoth pump enters the air line 16 from the fan 17. The mammoth pump circulates 20 recirculated biologically purified liquid from the guide chute 7 through the downcomer 18 towards the cones 3.

An external mammoth pump 19 with inlet pipes 20 is connected to the cover 2 by a switch 21 and a seal 22. The mammoth-25 pump 19 receives air through a line 23 from a fan 17. The mammoth pump 19 brings pre-sedimented liquid from the outer tank through a downcomer 24 towards the cones 3.

The combination of the mammoth pump / syöksysuutin go-30 from practical experience indicates that the uniform distribution of the incoming and recirculated liquid tile one-communications unit is obtained, thanks to pump liquid will come in portions (a splash phenomenon), which cover the lid inner side, and the falling evenly distributed in an individual-35 le .

The implementation described here consists of vertically placed, sinusoidally corrugated tiles, however, alternative implementations are possible, e.g.

Claims (11)

1. Purification devices for biological purification of the wastewater, provided with containers with tight-fitting lids, supply and discharge lines for air and liquid, and a unit of corrugated discs (5), forming microorganism carriers and placed on top of the corrugation directed horizontally, in which unit the liquid self-drains over the disk surfaces from the bottom (12) of the container, which liquid is introduced by means of the pump member (19) and is sealed against the inside of the lid (24), characterized in that recirculating liquid is supplied to the unit. - by means of a second pump member (13) through an equally upright nozzle (18), and that the inside of the lid is formed with cones (3) which increase the spread of liquid 35 across the unit. 2. Purification assembly according to claim 1, characterized in that the pumping means in the inlet pipe