CS248407B1 - Apparatus for separating insoluble matter from sludge and sewage - Google Patents

Abstract

The tank (1) is equipped with a discharge or suction device and has a cross-section that widens towards the surface. On the side of the tank (1) in the outlet (6) there are inclined partitions (5) arranged in a labyrinth. The tank (1) can be advantageously assembled from individual parts. The device for separating insoluble substances from sludge and waste water is mainly used in water management and wherever it is necessary to separate the solid phase from the liquid.

Description

BACKGROUND OF THE INVENTION The present invention relates to an apparatus for separating insoluble matter from sludge and waste water as well as to recover valuable substances from electroflotation solutions, dispersions and suspensions, consisting of a tank in which electrodes are stored and provided with a balancing or suction device.

For the separation of insoluble matter from sludge and waste water, an electroflotation device has recently been used, in which the vessel is divided by a flotation vessel in the middle of a fixed partition into an electrode working space and a calming space from which purified liquid flows from the electroflotator. a predetermined flow rate. This arrangement is advantageous in that it increases the size of the device and changes the size of the tank for each flow rate.

According to the invention, the above-mentioned drawbacks are eliminated by a device for separating insoluble matter from sludge and waste water, as well as obtaining valuable substances consisting of a tank in which electrodes are supported, equipped with a sludge discharge or exhaust device and having a working space above the electrodes according to the invention. It is based on the fact that oblique partitions are arranged in a labyrinth in the outlet from the side of the tank. It is further preferred that the tank is assembled from unit parts.

The device according to the invention allows considerable savings in container material and construction investment, as further exemplified below. The device is of simple construction, whereby the central partition wall of existing devices is replaced by labyrinthine inclined bulkheads located in the outlet on the side of the tank.

248 407

The device according to the invention is explained in more detail in the description of an exemplary embodiment thereof with reference to the accompanying drawings, in which Fig. 1 shows a cross-section and Fig. 2 shows a plan view of a device for separating insoluble matter from sludge and waste water according to the invention. At the end of the description, an example is given to illustrate the achieved higher effect of the device for separating insoluble matter from sludge and waste water according to the invention.

The device according to the invention consists of a tank 1 which extends towards the surface and in which both an outlet 6 and an inlet 2 are disposed on both sides and with a leakage channel 2 ^{for the} electrolyte. At the outlet 6, inclined partitions 11 are arranged in a labyrinth from the side of the tank. The sludge is fed through the inlet trough 2, flows through a leakage channel 2 to the electrolyte 6, passes through a gas stream, binds to the gas bubbles and is brought to the surface. The washed-out sludge is either shredded or sucked from the surface, the clean liquid passes through the inclined partitions 2 into the outlet 6.

Fig. 2 shows the assembly of the electroflotator from unit parts.

Example

In order to clean up 2 nP of liquid, an electroflotation device of about 1 m is required. Considering a vessel width at the bottom of 1.2 m, where the vessel is divided in the middle by a fixed partition into the working and cleaning space 3, a 2 m electrode length of 0.3 m is needed to clean the 2 fluid and thus i 2 m container length.

For the same amount of liquid, only 1m of vessel length is required when creating the device of the invention with labyrinth baffles at the spout.

From the above example, it is evident that considerable savings in container material and construction investment are achieved by the device according to the invention.

248 407

Possibilities of use of the electroflotation method according to the invention are wherever there is a need to separate the solid phase from the liquid in large quantities with small building requirements. In this case, the electroflotation device according to the invention represents a design improvement and simplification, the application of which is applied in separating the solid phase from sludge and waste water and in recovering valuable substances and where there is a lack of building space.

Claims (2)

SUBJECT OF THE INVENTION 1. Apparatus for separating insoluble matter from sludge and waste water and recovering valuable substances from electroplotteration solutions, dispersions and suspensions, consisting of a tank in which the electrodes are stored, equipped with a sludge discharge or aspirator and having a working space above the electrodes has a cross-section extending towards the surface, characterized in that oblique partitions 15) are arranged labyrinthically at the outlet (6) at the side of the tank (1). Device according to claim 1, characterized in that the tank (1) is made up of unit parts.