Side-water-outlet and peripheral-transmission mud scraper and mud scraping method

A technology of peripheral transmission and mud scraper, applied in the direction of separation method, chemical instrument and method, feeding/discharging device of settling tank, etc., can solve the problem of low sedimentation efficiency, ensure the deposition effect, improve the deposition effect, The effect of extending the flow distance

Pending Publication Date: 2019-10-11
UNIVERSAL ENVIROMENTAL PROTECTION EQUIP YIXING CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, sludge sedimentation is usually carried out by central water inlet and peripheral water outlet. In order to obtain a good sedimentation effect, it is necessary to greatly increase the radius of the sedimentation tank or reduce the sewage flow rate, and the sedimentation efficiency is low.

Method used

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  • Side-water-outlet and peripheral-transmission mud scraper and mud scraping method
  • Side-water-outlet and peripheral-transmission mud scraper and mud scraping method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] In this example, the diameter of the sedimentation tank 1 is 25m, and the depth is 3.5m. The height h1 of the fan-shaped clear water outlet 13 of the sedimentation tank 1 is 20cm, and the fan-shaped included angle of the fan-shaped clear water outlet 13 is 90 degrees. The angle is 120 degrees, the distance between the upper end of the fan-shaped sewage outlet 61 and the upper end of the sedimentation tank 1 is 0.85m, the height of the fan-shaped sewage outlet 61 is 60cm, and the sewage flow rate is 380 m 3 / hr, the speed of the mud scraper is 0.18r / min. After testing, the sludge concentration is 14 mg / l after being treated by the side water outlet mud scraper of the present invention, while the sludge concentration in the clear water of the traditional circumferential water outlet mud scraper is 22 mg / l, which greatly improves the sludge concentration. deposition effect.

Embodiment 2

[0017] In this example, the diameter of the sedimentation tank 1 is 36m, and the depth is 4m. The height h1 of the fan-shaped clear water outlet 13 of the sedimentation tank 1 is 25cm, and the fan-shaped included angle of the fan-shaped clear water outlet 13 is 120 degrees, and the fan-shaped included angle of the fan-shaped sewage outlet 61 The distance between the upper end of the fan-shaped sewage outlet 61 and the upper end of the sedimentation tank 1 is 1m, the height of the fan-shaped sewage outlet 61 is 63cm, and the sewage flow rate is 850m 3 / hr, the speed of the mud scraper is 0.18r / min. After testing, the sludge concentration is 13 mg / l after being treated by the side water outlet mud scraper of the present invention, while the sludge concentration in the clear water of the traditional circumferential water outlet mud scraper is 20 mg / l, which greatly improves the sludge concentration. deposition effect.

Embodiment 3

[0019] In this example, the diameter of the sedimentation tank 1 is 50m, and the depth is 4.5m. The height h1 of the fan-shaped clear water outlet 13 of the sedimentation tank 1 is 25cm, and the fan-shaped angle of the fan-shaped clear water outlet 13 is 90 degrees. The angle is 150 degrees, the distance between the upper end of the fan-shaped sewage outlet 61 and the upper end of the sedimentation tank 1 is 1.5m, the height of the fan-shaped sewage outlet 61 is 68cm, and the sewage flow rate is 2120m 3 / hr, the speed of the mud scraper is 0.16r / min. After testing, the sludge concentration is 12.5 mg / l after being treated by the side water outlet mud scraper of the present invention, while the sludge concentration in the clear water of the traditional circumferential water outlet mud scraper is 23 mg / l, which greatly improves the sludge concentration. Mud deposition effect.

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Abstract

The invention discloses a side-water-outlet and peripheral-transmission mud scraper and a mud scraping method. The mud scraper comprises a settling pond, a service bridge, a support, a pond bottom scraping plate, a flow-stabilizing bucket scraping plate and a flow-stabilizing bucket. Sewage flows into the flow-stabilizing bucket through a sewage inlet from the bottom of the settling pond and flowsout of a sector-shaped sewage outlet after being stabilized by the flow-stabilizing bucket, the sewage flowing out of the sector-shaped sewage outlet flows through the settling pond, the mud in the sewage settles down at the bottom of the settling pond, the service bridge drives the pond bottom scraping plate through the support to gather the mud into a mud pit, the mud settling down above the sector-shaped sewage outlet is scraped into the settling pond through the flow-stabilizing bucket scraping plate for secondary settling, the settling-down mud is discharged out of a mud outlet, and clear water flows out of a clear water outlet through a sector-shaped clear water outlet above the settling pond. The settling effect of the mud in the sewage is greatly improved, and the mud scraper canbe applied to primary or secondary settling of the sewage in a sewage treatment plant.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a technology for scraping mud by transmission around the water outlet side. Background technique [0002] Peripheral drive mud scrapers are widely used for primary or secondary sedimentation in sewage treatment plants. The principle is that after the sewage is introduced into the sedimentation tank, the sludge settles at the bottom of the tank during the flow of the sewage, and the settled sludge is collected by the scraper of the mud scraper to the central mud pit for discharge, while the clean water overflows from the top of the sedimentation tank. [0003] In the prior art, sludge sedimentation is usually carried out in the way of central water inlet and peripheral water outlet. In order to obtain a good sedimentation effect, it is necessary to greatly increase the radius of the sedimentation tank or reduce the sewage flow rate, and the sedimentation efficiency is low. Conten...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D21/06B01D21/18B01D21/24
CPCB01D21/06B01D21/18B01D21/2405B01D21/245
Inventor 邵华平戴峰泽吴勇强王凤新
Owner UNIVERSAL ENVIROMENTAL PROTECTION EQUIP YIXING CITY
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