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Device using vertical electrostatic field to accelerate sludge settling

A settling device and sludge settling technology, which is applied in the fields of magnetic field/electric field water/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., can solve the problems of low settling efficiency, instability, easy floating and settling of settled sludge, and achieve Effect of accelerating settlement and improving settlement efficiency

Inactive Publication Date: 2008-10-01
BEIJING UNIV OF TECH
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Problems solved by technology

[0004] The purpose of the present invention is to propose a device using an electrostatic field to speed up the sedimentation rate through the action of an electric field force, aiming at the problems of low sedimentation efficiency of sludge settling tanks, easy floating of sedimented sludge, or unstable sedimentation in the field of sewage treatment. Settling of charged sludge flocs achieves the purpose of improving sludge settling efficiency and stability

Method used

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  • Device using vertical electrostatic field to accelerate sludge settling
  • Device using vertical electrostatic field to accelerate sludge settling

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Embodiment Construction

[0011] Combine below figure 2 The present invention is described further:

[0012] This embodiment includes two parts: an electrostatic field generating device and a sludge settling device 6 . The electrostatic field generating device includes a DC power supply 1 , a cathode 3 and an anode 5 . Both the cathode 3 and the anode 5 are connected to the DC power supply 1 through power lines. The metal anode electrode sheet is installed on the bottom of the sedimentation device 1 and is close to the bottom of the cylinder. The metal cathode electrode sheet is placed on the upper part of the sedimentation device 6 and is preferably submerged just below the liquid level of the sludge to be settled. Between the metal anode 5 and the cathode 3 is The sludge mixture to be settled.

[0013] In this embodiment, the physical characteristic of "charged particles in an electric field are affected by electric field forces" is applied to a settling device for charged sludge flocs. The shap...

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Abstract

The invention relates to a device for speeding up sludge settling by using vertical static electric field, which pertains to the technical field of sludge settling. The device essentially comprises a settling device and a static electric field generating device, wherein, the static electric field generating device comprises a DC power source, an anode and a cathode. The cathode is arranged at the upper part of the settling device and dipped under liquid level, the anode is arranged at the inner bottom part of the settling device, and both the cathode and the anode are connected with the DC power source by power lines. The settling device is used for holding sludge to be settled. The device can also speed up the settlement of the sludge under the effects of relatively low voltage and current, thus improving the settling efficiency of the sludge and providing feasible evidences for the improvement of the secondary settling technique of sewage treatment.

Description

technical field [0001] The invention relates to a device for accelerating sludge sedimentation by applying a vertical electrostatic field, belonging to the technical field of sludge sedimentation. Background technique [0002] In the sewage treatment process, the secondary settling tank is an important treatment unit in the biological treatment of wastewater. It has the functions of clarification and concentration at the same time: one is to separate the sludge from the effluent of the reaction tank to ensure that the suspended solids in the effluent meet the discharge standards; The mud is concentrated to keep the concentration of microorganisms flowing back into the biological reaction tank within a certain range, so as to ensure the stable operation of the wastewater biological treatment system. The operation status of the secondary settling tank has an important impact on the treatment effect of the entire wastewater biological treatment system, and is an important link ...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/48
Inventor 杨宏邓建诚王天瑞姚乾朱现信
Owner BEIJING UNIV OF TECH
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