As a preferred solution, there are at least two rows of pipes in the electrocoagulation wastewater treatment device.  　　

Each row of pipelines are arranged side by side in series connection, the first pipeline of the front pipeline is set below, the last pipeline is set above, the middle pipeline increases in height and is installed in series ; the first pipeline of the rear pipeline Set at the top, the last section of the pipeline is set below, the middle pipeline is lowered and installed in series ; the last section of the front pipeline is connected in series with the first section of the rear pipeline.  　　

Each row of pipelines are arranged side by side in a parallel connection. The first section of each row of pipelines is set below, the last section of the pipeline is set above, and the middle pipelines are sequentially increased in height and installed in series ; the first section of each row of pipelines The pipeline merges and connects to the water inlet valve, and the last pipe of each row of pipelines merges and connects to the pressurizing valve.  　　

Each section of the pipeline of the electro-flocculation wastewater treatment device is installed on a bracket, and each section of the pipeline and the bracket are fixed by screws.

Add H2O2 oxidant to PH adjustment tank and electro-flocculation wastewater treatment device

As a preferred solution, H2O2 oxidant is added to the pH adjustment tank and the electro-flocculation wastewater treatment device.  　　

Al(OH)3 coagulant aid is added to the coagulation tank.  　　

The supporting frame includes an annular body and a plurality of supporting ribs formed by the annular body radiating outwards. The anode is penetrated in the annular ring formed by the annular body, and each supporting rib contacts the inner part of the cathode tube. A plurality of water flow channels are formed between the wall surface and the inner wall surface of the cathode tube, which can promote the water flow to form a vortex.  　　

As a preferred solution, a water inlet joint and a water outlet joint are respectively installed at both ends of the leak-proof rubber pipe, and the inlet and outlet joints are in sealed connection with both ends of the leak-proof rubber pipe ; the water inlet joint has a water inlet end The connecting pipe body and a water inlet arranged in a T shape with the water inlet connecting pipe body ; the outlet joint has a water outlet connecting pipe body and a water outlet arranged in a T shape with the water outlet connecting pipe body , The water inlet, the cathode tube cavity and the water outlet communicate with each other.  　　

As a preferred solution, a first sealing plug is installed at the end of the water inlet connector, and the center of the first sealing plug has a first through hole for the anode end to pass through ; the end of the water outlet connector is installed There is a second sealing plug, and the center of the second sealing plug has a second through hole for the cathode end to pass through.  　　

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