Method for treating waste water in turbulent electric flocculation way

Abstract

The invention discloses a method for treating waste water in a turbulent electric flocculation way. The method comprises the following steps: S1: opening an adjusting valve of a water inlet pipe, andintroducing the waste water into a turbulent electric flocculation trough by virtue of the water inlet pipe; and S2: separately timing a first electromagnetic reverser and a second electromagnetic reverser by virtue of a first timing switch and a second timing switch, so that the first electromagnetic reverser and the second electromagnetic reverser can periodically switch the valve position state. By adopting the turbulent electric flocculation way, the concept of the traditional electrochemical device is changed, an electrolytic trough electrode is in a concentric tubular shape, a titanium cathode plate is inserted in the inner wall of the electrolytic trough, and an anode is fixed in the middle of the trough body. In the electric flocculation process, the waste water enters the electrolytic trough from the bottom of the trough under the effect of a transfusion pump, flows at a high speed in a rotational manner in the trough and is discharged from the top of the trough. The concentration difference polarization influence on the turbulent electric flocculation device is eliminated by virtue of the high-speed liquid flow, and an effect for improving the applicability of the material and improving the treatment capability of the device can be achieved.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a method for turbulent electric flocculation treatment of waste water. Background technique [0002] According to the source, state and composition of wastewater, as well as wastewater treatment technology, wastewater treatment methods can be divided into physical methods (gravity separation method, centrifugal force separation method, filtration method), chemical methods (coagulation method, chemical oxidation method, alkali method) ), physical and chemical methods (electrolysis, adsorption, ion exchange, electrodialysis), biological methods (activated sludge, biofilm, natural biological treatment, anaerobic biological treatment) and membrane treatment (microfiltration , ultrafiltration, nanofiltration, reverse osmosis). [0003] Suspended solids in wastewater often become a difficult point in wastewater treatment. Taking oil production wastewater as an example, there ...

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Problems solved by technology

[0003] Suspended solids in wastewater often become a difficult point in wastewater treatment. Taking oil production wastewater as an example, there are certain suspended solid particles in oil production wastewater. Due to the use of a large number of chemical additives such as defoaming in the process of oil well production and deoiling treatment demulsifiers, pour point depressants, demulsifiers, etc., resulting in a high COD value in the oil extraction wastewater, and the crude oil and suspended solid particles remaining in the wastewater exist in a stable emulsion and colloidal state, making separation difficult

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