Electrochemical device for novel double compound electrode

Abstract

The invention provides a novel hermetic high-pressure electrochemical device with double composite electrodes, which can remove 30 to 70 percent of TDS in high-difficulty wastewater with tens thousands of COD. (The removal rate of the device to TDS in high-difficulty wastewater with tens thousands of COD can reach 30 to 70 percent.) A method for manufacturing the device comprises the following steps that: a positive electrode a is made of an excellent-quality graphite plate at the density between 1.6 and 1.8; a positive electrode b is in the shape of a square flat pipe made of a titanium-nickel alloy compact rhombic net; two positive electrodes are combined into one; a negative electrode a is in the shape of a square flat pipe made of a high-ferronickel compact rhombic net; a negative electrode b consists of a plurality of layers of activated carbon cotton (or carbonized glass fiber); two negative electrodes are combined into one; and the composite double electrodes are all in parallel connection. In an electrochemical process, two electrodes generates a large number of nascent-state active substances such as es, HO., HO2., O2., O., OH., O3, and can generate nascent-state hydrogen peroxide, free radicals, hydroxyl radicals and other active substances at a high concentration. As the residence time of high-difficulty wastewater in the device is extremely short and is 5 seconds to minutes at a time, the device is extremely low in treatment cost.

Description

1. Technical field: [0001] The present invention is a novel double compound electrode electrochemical device 2. Background technology: [0002] The biggest problem in my country's industrial wastewater treatment is refractory and difficult wastewater, which accounts for less than 20% of the total industrial wastewater, but the total TDS of refractory and difficult wastewater per ton is 10-20 times that of ordinary industrial wastewater. The existence of refractory and difficult wastewater seriously endangers my country's water resource environment and soil environment, and greatly restricts the development of my country's related industries. Refractory and difficult wastewater mainly exists in the chemical manufacturing industry, chemical fiber industry, pharmaceutical industry, pesticide industry, dye industry, electroplating industry, papermaking industry and printing and dyeing industry. of great importance. The water pollution incident of Songhua River in Jilin Chemica...

AI Technical Summary

Problems solved by technology

At present, the wastewater treatment technology recommended by Germany has a residence time of up to one week, and the treatment cost is as high as 17 yuan / ton, which brings great difficulties to industrial production.