SU1395353A1 - Settling tank - Google Patents

Abstract

The invention is intended for use in the treatment of industrial and domestic wastewater and tr & z.bl et .. to increase the efficiency and reliability - Rabbte. The sump contains a housing with a camera about ampli- fication, a central chamber (CC) mounted on a rotating farm, and scrapers attached to the central rod and located in the lower part of the CC. Scrapers are also placed on the bottom of the casing, attached by radial rods to the CC. As the truss rotates, the CC turns. In this case, the stationary scrapers, located in its lower part, provide loosening and removal of sediment in the lower part of the body. The scrappers located in the lower part of the housing, rotating in the direction of the CC, loosen and shift the sediment to the outlet of the sediment. 1 il.

Description

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The invention relates to combined devices for the treatment of wastewater from insoluble emulsified and colloidal contaminants, suspended solids, and can be used for the treatment of domestic and industrial wastewater.

The purpose of the invention is to increase the reliability of operation when removing sediment prone to compaction.

The drawing shows a sump, sheath, view.

The sump contains a housing 1 with a catchment tray 2 and a swivel truss 3 installed in its upper part. In the housing 1, the clarification chamber 4 is coaxially arranged with the flotoagent supply means in the form of perforated pipes 5 and the central chamber 6 fixed on the truss 3. The central part of the truss 3 has a ring 7 through which the inlet pipe 8 with the reflective screen 9 is installed and installed inside radial blades 10. Farm 3 is connected to a drive (not shown) and is supported on housing 1 by means of rollers 11. The upper part of the central chamber 6 has windows 12 for communication with the illuminating chamber 4. The lower part of the central chamber 6 is provided with scrapers 13 with a rod 14 fixed in the lower part of the body. To the outlet pipeline of the draft of chamber 6, radial rods 15 are fixed with scrapers 16 in contact with the lower part; housing 1 at the nozzle 17, equipped with a shield gate for the withdrawal of sediment. In the upper part of the clarification chamber 4, a tray 18 for collecting foam and a conduit 19 for removing it are located.

The sump works as follows. The initial waste water enters the supply chamber 8 into the central chamber 6, where, reflecting from the screen 9 with the blades 10, it acquires an upward-rotational motion. In chamber 6, under the action of gravitational and centrifugal forces acting on suspended particles of contaminants, the initial wastewater is clarified. In this case, sediment is deposited and accumulates in the lower conical part of chamber 6.

The clarified water in the central chamber 6 flows through the windows 12 into the clarification chamber 4, where it is subjected to flotation purification by bubbles of air supplied through perforated pipes 5. The water purified by flotation lowers with simultaneous sedimentation of suspensions in the lower part of the housing 1. Then the water goes around the lower end of the wall the chamber 4 for clarification, rises along the gap between the walls of the housing 1 and the chamber 4, and is discharged into the collection tray 2, from where it is diverted through the pipeline for further purification.

To remove the sediment from the lower part of the central chamber 6 and the housing 1 include a truss 3, which rotates on the rollers 11 and rotates the central chamber 6. In connection with the fact that the scrapers 18 are fixed on the fixed rod 14, and the chamber 6

rotates, cleaning of its lower part from accumulated and compacted sludge is ensured due to loosening and shearing with scrapers into the outlet of the chamber 6. The cross section of the outlet is selected

so that partial compaction and dewatering of the sediment in the conical part of chamber 6 is ensured and outflow through the opening of a part of the main water flow to the clarification chamber 4 is prevented.

Since the housing 1 is stationary and the scrapers 16 are fixed to the rotating chamber 6, they scrape away the accumulated compacted sediment in the lower part of the housing 1 and shift it into the nozzle 17.

Technical and economic efficiency

The proposed settling tank consists in the possibility of purifying water with sediment prone to compaction through the use of scrapers, which ensure the forced cleaning and removal of sediment both from the lower part of the central chamber and from the bottom.

enclosures. Due to the fact that clogging of the device with sediment is practically excluded, the cost of maintaining the device is reduced by 25-30%.

Claims (1)

Invention Formula A sump, comprising a housing with a catchment tray, a sediment outlet pipe and a rotary truss installed in its upper part, a lighting chamber coaxially located in the housing with means of supplying the flotation agent and a central chamber fixed on the truss, a central feed pipe with a reflective screen mounted inside radial blades, characterized in that increase the reliability of operation when removing sediment prone to compaction; the settling tank is equipped with scrapers installed in the lower part of the body and attached to the central chamber, while the central chamber is equipped with scrapers with a rod fixed in the lower part of the body, and the supply pipe is located in the upper part of the central cameras. 6ths) ()