SU1668310A1 - Device for water purification - Google Patents

Abstract

The invention can be used to purify water in water supply and sewage systems. The aim of the invention is to increase the degree of water purification. The device comprises a housing with water supply and discharge connections located on its opposite sides. In the housing are perforated distribution walls. Between them there is a set of inclined shelves, which are electrodes. The shelves are V-shaped, and the first part, counting in the direction of water movement, is perforated and tilted upwards. Through the vertical perforations of the shelves are installed through vertical pipelines with openings in the inter-shelf space to remove excess sludge and electrolytic gases. Inter-shelf space also contains moving dielectric floats. Piping and distribution walls are connected to a DC source. Water purification is carried out in the inter-shelf space in the layer of suspended sediment formed by electrolytic gases released on the shelves-electrodes. 1 hp ff, 1 tab., 2 ill.

Description

The invention relates to water supply and sewage and can be widely used, for example, in the treatment of natural and waste waters.

The aim of the invention is to increase the degree of water purification.

Figure 1 shows a proposed water purification device, a slit; figure 2 - element perforated pipeline with a system of dielectric balls.

The proposed device consists of a housing 1, made mainly of a dielectric material, provided with a water inlet nozzle 2 and a water outlet nozzle 3. Perforated partition walls 4 of conductive material are installed inside the housing 1.

and conductive shelves. The latter are made of two parts, the first, counting from nozzle 2, is perforated and tilted down, the second non-perforated - tilted up. In the perforation holes of the shelves

5Installed vertical piping

6 with openings in the inter-shelf space, with the pipelines 6 made of conductive material. In the inter-shelf space, dielectric floats 7, for example, made of polystyrene, are disposed of. Shelves 5 in the kit are connected to a DC source, so that the top shelf is the anode and the bottom is the cathode. Bulkheads 4 and piping 6 are also connected to a DC source and are respectively.

about

00

SA)

ABOUT

by cathodes and anodes. In case 1 above the partitions 4, boxes 8 are installed with nozzles 9 for removing flotation products.

The vertical pipelines 6 (Fig. 2) are equipped with freely moving cylindrical floats 10 connected by elastic threads 11c with dielectric floats 7.

The swap device operates as follows.

The initial water after coagulation through the nozzle 2 enters into the housing 1, passes through the partition 4 and is distributed between the shelves 5. Due to the evolution of gas on the shelves 5 (hydrogen on the cathodes and oxygen on the anodes) and its movement, a suspended layer is formed in the interpolar space , consisting of coagulant particles, impurities and dielectric floats 7, delayed re-entering contaminants, excess sludge and electrolytic gas flows into the pipelines 6 and are removed from the device with their help. When the sludge is released from the pipeline 6, the float 10 moves downwards and, consequently, the floats 7 are fixed to the float with 10 yarns 11, which contributes to the additional flow of sludge into the pipelines 6. In addition to cleaning in the layer of suspended sediment, the water floats in the space between the shelves in the gap between the shelves 5 and the distribution partitions 4. Flotation product accumulates in the boxes 8, from where it is periodically removed through coarse pastes 9 Purified water is discharged through the nozzle 3

The design of the proposed device gives rise to a suspended layer of sediment due to the effects of the electric field, in particular, gassing on the electrodes, during the downward movement of water, while water purification occurs in a thin layer under the constant influence of the electric field, which increases the degree of water purification and creates conditions its regulation of the effectiveness of the process.

The presence of vertical perforated pipelines not only ensures a uniform distribution of the treated water in the inter-shelf space, the creation of a non-uniform electric field, but also allows the removal of excess suspended sediment and electric gas.

Dielectric floats, located in the inter-shelf space, serve to improve the conditions for the formation of a layer of suspended sediment, as they are the centers of formation of enlarged aggregates. Due to their movement in the inter-shelf space, the flocculation process is also controlled, but the excess sediment is transported in the direction of the pipelines intended for for his device.

The perforated distribution partitions, which are located in the inflow, are additionally filtering elements that keep the incoming

0 contamination.

Thus, the positive effect of improving the efficiency and increasing the degree of water purification in the proposed device

5 is achieved due to the release of contaminants in the suspended sediment layer formed under the action of a non-uniform electric field and under the constant influence of the latter in a thin layer

0 between the electrode shelves, due to flotation separation of contaminants by electrolytic gas bubbles in a thin layer of water in the interelectrode gap and release of contaminants during water movement through vertical gas flows at the ends of the shelf-electrode systems. The design of the device ensures the treatment of water under constant conditions corresponding to the optimal.

0To determine the efficiency of the proposed device and compare it with a known device, test samples were carried out. Under the same conditions, the experiment was set up

5 equal performance of the compared devices, equal to 18 l / h, obtained experimental data are given in the table

The design of the device provides the ability to control the effect of water purification by changing the parameters of water electroprocessing in the inter-shelf space.

When using shelf electrodes made of aluminum or iron (electrochemically

Claims (2)

5 soluble materials) the formation of a metal hydroxide occurs and it enters the treated water without its prior coagulation being required. Invention Formula 01, a water treatment apparatus, comprising a housing with water inlets and outlets located on opposite sides of the housing, in which perforated distributor partitions are located and a set of inclined shelves between them, made of electrically conductive material and connected to a direct current source, characterized by so that, in order to increase the degree of water purification, the shelves in the kit are connected to source of direct current so that the bottom shelf is the cathode, and the topmost is the anode, the shelves are V-shaped, and their part is first, considering the direction of water flow, perforated and tilted down, and the second is unperforated and tilted through vertical piping with holes in the inter-shelf space are installed upwards in the perforation holes of the shelves, while in the inter-shelf space the dielectric floats are additionally placed, the vertical piping s and distribution baffle 0 They are made of conductive material and connected to a DC source, the pipelines being anodes and the partitions are cathodes, and flotation product accumulators are installed in the housing above the distribution partitions. 2. A device according to claim 1, characterized in that the vertical pipelines are provided with freely moving cylindrical floats, located in their cavity, connected through openings in the pipelines with the help of elastic threads with dielectric floats located in the inter shelf space. FIG. ten 2.