Pressure release type water retaining device for water inlet of sludge thickener

Abstract

The invention discloses a pressure release type water retaining device for a water inlet of a sludge thickener. The pressure release type water retaining device is arranged below the water inlet of the sludge thickener and comprises a retaining plate and at least two transverse supporting portions, the transverse supporting portions are fixedly connected to walls of the sludge thickener, a diagonal supporting portion is fixedly connected below each transverse supporting portion, the diagonal supporting portions are fixedly connected with the walls of the sludge thickener, and the retaining plate is fixedly arranged above the transverse supporting portions. An extension line of the water inlet of the sludge thickener forms a projection area on the plane of the retaining plate, and the projection area is contained within edges of the retaining plate. The pressure release type water retaining device is compact in structure, convenient to mount and low in cost; on the premise that a body structure and a water inlet way of the sludge thickener are unchanged, water flowing into the sludge thickener is buffered to some extent, sludge at the bottom of the sludge thickener is protected from disturbance of water flowing into the sludge thickener, and accordingly sludge thickening effects are improved.

Description

technical field [0001] The invention relates to the technical field of sludge thickening tanks, in particular to a pressure relief and water retaining device for a water inlet of a sludge thickening tank. Background technique [0002] The thickening method of the sludge thickening tank is divided into two types: gravity thickening and mechanical thickening. Among them, gravity concentration is currently the most commonly used method in sludge treatment in water purification plants. It has the advantages of less energy consumption and a certain buffer capacity under high turbidity. After the muddy water enters the gravity concentration tank, it flows to the surrounding at a gradually slower speed to complete the solid-liquid separation. A mud scraper and a mud collection device are installed at the bottom of the thickening tank, and the separated supernatant is collected through the upper sump of the thickening tank and then poured into the central water collection channel f...

AI Technical Summary

Problems solved by technology

However, when the muddy water enters the pool body obliquely downward, its water flow will disturb the sludge at the bottom of the pool body, and the sludge settled at the bottom will remix with the water body, especially for the pool body near the water inlet side, the bottom will be concentrated The effect is greatly affected. In addition, due to the sludge disturbance, the thickness of the sludge layer at the bottom of the thickening tank is inconsistent, which affects the scraping effect of the sludge scraper.

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