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Secondary sedimentation tank water inlet residue filtering device in urban domestic sewage treatment system

A technology for urban domestic sewage and treatment system, which is applied in the field of residue filtering devices at the inlet of secondary sedimentation tanks, can solve the problems of affecting the sedimentation efficiency of secondary sedimentation tanks, difficult to produce sedimentation, and short flow in secondary sedimentation tanks, saving manpower and avoiding short flow in secondary sedimentation tanks. , to avoid the effect of cleaning

Inactive Publication Date: 2021-01-26
重庆盈燚科技咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, after the sewage is aerated, the activated sludge mixture contains some large-volume suspended particles and scum. When these large-volume suspended particles and scum enter the secondary settling tank, the flow rate of the activated sludge mixture will be uneven. On the one hand, it will cause short-flow phenomenon in the secondary settling tank, which will affect the sedimentation efficiency of the secondary settling tank. In the supernatant of the secondary sedimentation tank, it is discharged together with the supernatant
[0003] The existing technology does not pre-treat the activated sludge mixture entering the secondary settling tank, and filter and remove large-volume suspended particles and scum, so that there are large-volume suspended particles and scum that are difficult to settle in the supernatant of the secondary settling tank. Scum, unable to meet discharge standards

Method used

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  • Secondary sedimentation tank water inlet residue filtering device in urban domestic sewage treatment system
  • Secondary sedimentation tank water inlet residue filtering device in urban domestic sewage treatment system
  • Secondary sedimentation tank water inlet residue filtering device in urban domestic sewage treatment system

Examples

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Embodiment 1

[0042] Embodiment 1: a slag filter device at the inlet of a secondary sedimentation tank in an urban domestic sewage treatment system, including a grille 100, a rail 200, a slag collecting assembly and a traction assembly 400;

[0043] The grille 100 is a vertical grille 100, and the grille 100 is inclined to the left and fixedly arranged at the water inlet of the secondary sedimentation tank;

[0044] In the specific implementation, the left side of the grille 100 is welded with a horizontal bar for fixing, and the upper end of the grille 100 is welded to fix an extension plate 700, the width of the extension plate 700 is consistent with the width of the grille 100, and the length of the extension plate 700 The direction is the same as the length direction of the grid 100 .

[0045] There are two rails 200, and the two rails 200 with the same structure are arranged symmetrically on both sides of the grille 100. The rails 200 are fixedly connected to the side walls of the water ...

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Abstract

The invention relates to the field of sewage treatment, in particular to a residue filtering device for a water inlet of a secondary sedimentation tank in an urban domestic sewage treatment system. Aservo motor is controlled by an electric cabinet to work, a transmission roller rotates, a slag scraping plate reciprocates up and down under the action of a traction rope and gravity, and large-volume suspended particles and dross filtered by a grid are collected into a slag receiving tank, so that pretreatment of an activated sludge mixed solution entering a secondary sedimentation tank is completed; large-volume suspended particles and dross in the activated sludge mixed solution are effectively removed, so that the problems that short flow occurs in a secondary sedimentation tank and the supernatant cannot reach the discharge standard are solved, and sewage treatment is completed.

Description

technical field [0001] The invention relates to the field of sewage treatment, in particular to a filter residue device at the inlet of a secondary sedimentation tank in an urban domestic sewage treatment system. Background technique [0002] The secondary sedimentation tank is one of the most commonly used tanks in the daily operation of the sewage system, and it is also the last link of biological sewage treatment. After aeration treatment, the sewage becomes an activated sludge mixture and enters the secondary sedimentation tank for mud-water separation. Only treated water can be discharged. After the sewage is aerated in the prior art, the activated sludge mixture contains some large-volume suspended particles and scum, and when these large-volume suspended particles and scum enter the secondary sedimentation tank, the flow rate of the activated sludge mixture will be uneven. , on the one hand, it will cause short flow in the secondary sedimentation tank, which will aff...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/24C02F1/00
CPCC02F1/24C02F1/00
Inventor 刘宏
Owner 重庆盈燚科技咨询有限公司
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