A high-efficiency bin-type micro-electrolysis generator and its wastewater treatment process

Abstract

The invention provides an efficient bin type micro-electrolysis generator and belongs to the field of micro-electrolysis devices. The efficient bin type micro-electrolysis generator comprises a tank body, supporting plates are arranged in the tank body in the vertical direction in a multi-layer mode, the supporting plate of each layer is provided with a filler bin chamber, a tubular water distributor is arranged at the bottom in the tank body and arranged below the supporting plate of the bottommost layer, and a layered gas distributor is arranged in the middle in the tank body. The efficient bin type micro-electrolysis generator is characterized in that a building method of the filler bin chamber includes the steps that a nylon net is laid on the supporting plate of each layer, PVC pipes are closely and vertically placed, a honeycomb-shaped bin-type reaction region is built, or a factory is pre-divided and manufactured into honeycomb-shaped and column-shaped regions, and the honeycomb-shaped bin-type reaction region built through the PVC pipes or the honeycomb-shaped and column-shaped regions formed by pre-dividing the factory are filled with micro-electrolysis materials. The problem that filler is prone to passivation and hardening can be solved, the short flow problem can also be solved with a unique method, and the effect is very good.

Description

technical field [0001] The invention relates to a micro-electrolysis device for treating organic waste liquid, especially suitable for the treatment of waste liquid for oil field measures. The invention belongs to the field of micro-electrolysis devices. Background technique [0002] Micro-electrolysis technology is currently a process for treating high-concentration organic wastewater, also known as internal electrolysis. Iron-carbon is often used as a micro-electrolysis material. Generally, iron-carbon and carbon particles are immersed in acidic wastewater, and the potential difference formed between the two Fe-C stages is used to form countless micro-primary batteries in the electrolysis device. These micro-galvanic batteries use iron with low potential as the anode and carbon with high potential as the cathode. Electrochemical reactions occur in the acidic aqueous electrolyte solution, which can form a potential difference of about 1.2V. [0003] Its reaction process i...

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Problems solved by technology

[0013] At present, most of the micro-electrolysis equipment at home and abroad use fixed beds, which are characterized by simple structure and good plug-flow performance. However, there are many practical problems: First, after a period of operation of the packed bed, the surface of the packed bed will become passivated. In addition, the suspended particles in the wastewater will also partially deposit on the surface of the filler, which blocks the effective contact between the filler and the wastewater, resulting in a decrease in the treatment effect of the iron bed and a decrease in the reaction speed; Not ideal, it is easy to cause short circuit and dead zone, forming channel flow, reducing the treatment effect, and greatly increasing the difficulty of packing replacement; third, the consumption of iron filings is fast, and the supplementary labor intensity is high

[0014] In order to solve this problem, scholars have adopted the following methods: one is to solve the problem of passivation through regular activation of fillers. The operation period of the iron bed should be determined by the actual operation conditions, generally about 20d, and the activation time of fillers can be activated by immersion. Use 2-3h; the second is to effectively avoid the compaction of the filler by adding appropriate auxiliary materials (such as X50 polyethylene multi-faceted hollow balls, etc.) The use of fluidized bed devices can also better solve the problem of iron bed packing compaction, but the high investment costs and operational management requirements limit the application of this device

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