SU791610A1 - Filter for waste water purification - Google Patents

Description

The invention relates to the field of wastewater treatment from solid impurities and insoluble liquids, for example, petroleum products, and can be used in the treatment of industrial wastewater and polluted rainwater runoff from urban and industrial enterprises. The closest in technical essence and the achieved effect is a filter for wastewater treatment, including a housing divided by horizontal perforated feathers into sections filled with filtering material and provided with branch pipes located along the vertical axis of the filter l. The device is distinguished by a high efficiency of wastewater treatment, however, it has a significant drawback, which consists in the complexity and insufficient effect of regeneration of the charge, with a significant content of both solid impurities and oil products in the water. The purpose of the proposed filter is to improve the performance properties of the filter by increasing the regeneration efficiency. In order to achieve this goal, in the proposed filter, the outlet tubes are perforated, telescopically connected and have valves at the connection points. In addition, in the proposed filter, the perforated partitions are provided with stops, and the branch pipes have a drive. FIG. 1 shows the device, a longitudinal section; in fig. 2 — node 1 in FIG. 1. The filter consists of a housing 1, movable horizontal perforated partitions 2, forming the upper 3, middle 4 and lower 5 sections, filled with elastic filtering material 6. Movable horizontal crossings. , 10 with perforation 11 and valves 12. Valves 12 are made in the form of annular gaskets 13 between the flanges 14 and 15 at the ends of the connected branch pipes of the outlet 9 and 10.

Movable horizontal partitions have stops 16.

The bottom section 5 of the filter is bounded below by a fixed horizontal perforated partition 17, through the center of which is passed a pipe 18, rigidly connected to the partition, equipped with a valve 19.

Above the upper section of the filter there is a pipe 20 for supplying the cleaned liquid during filtration and wash water during regeneration.

A cone-shaped sump 21 with nozzles and valves, 22 and 23, respectively, adjoins the lower section of the filter to drain the filtrate, 24 and 25 to drain from the chilled product and wash water, 26, 27 to empty the filter.

The filter works as follows. Sewage water containing suspended solids and insoluble liquids, such as petroleum products, continuously flows through the inlet pipe 20 to the filter. Water passes successively through sections 3,4, 5 of the filter filled with elastic filtering material 6 and separated by horizontal perforated movable partitions 2, and through a fixed partition 17 enters a cone-shaped settling basin 21, from which the filtrate is discharged through the nozzle 22 with the valve 23 open. when the movable horizontal partitions 2 are in the extreme upper position, the annular gaskets 13 are clamped between the rim 14 and 15 at the ends of the movable glasses and thus the valves 12 vertical cavity discontinuity collector excluding passage of insufficiently purified liquid in the bottom of the filter through the perforated collector. The regeneration of the filter loading is performed as follows.

The supply of waste liquid to the filter is stopped. The filter is emptied by opening the valve 27 on the pipe 26, then the valve 19 on the pipe 18 and the valve 25 on the pipe 24 are opened.

Compressing the elastic load is carried out by means of the actuator 7. When the force is directed downwards, the branch pipes 8.9, 10 move one on top of the other and onto the fixed Pipe 18, providing by means of movable horizontal partitions 2 the necessary degree of compression of the load sequentially in sections 3, 4 and 5 filter.

The compression cycle is completed when the stops 16 in all three filter sections

reach opposite horizontal partitions.

With the vertical displacement of the movable glasses, annular gaskets 13 (see Fig. 2), valves are released. 12 opens and, through the perforation 11, the pressed fluid enters the cavity of the vertical collector.

Oil-saturated liquid is pressed through pipes 18 and 26

 relegated to a special collection.

 The oil products that have emerged in this collection are utilized.

Further filter regeneration is performed by flushing with hot water supplied from nozzle 20. When

5 | this continuously performs compression and expansion of the filtering load by means of movable horizontal partitions 2.

0 Under these conditions, a high effect is obtained by tilting the load from suspended substances and insoluble liquids detained during filtration. Rinse water through the pipe 26 with an open backwater: the 27 is discharged into the head of the treatment plant or into a special sump.

By achieving a uniform compression of the entire mass of the filter charge, a more rapid and complete removal of the load of delayed impurities, the use of the proposed filter allows to increase the efficiency of regeneration of the filter load and, accordingly, increase the duration of the filter cycle.

Claims (2)

Invention Formula 0 1- A filter for wastewater treatment, including a housing divided by perforated partitions into sections filled with filtering material and fitted with branch pipes placed along the vertical axis of the filter, characterized in that, in order to improve the performance properties of the filter by increasing the efficiency of regeneration, the branch lines nozzles are perforated, telescopically connected and have valves at the connection points. 2. The filter according to claim 1, characterized in that the perforated partitions are provided with stops, and the branch pipes are driven. Sources of information taken into account in the examination 1. USSR author's certificate l № 466029, cl. B 01 O 25/02, 03/30/73.