Drinking water advanced treatment system based on carbon nanotube-based electrochemical filter membrane

Abstract

The invention provides a drinking water advanced treatment system based on a carbon nanotube-based electrochemical filter membrane. The system comprises a conventional treatment module and an advanced treatment module, the conventional treatment module is communicated with the advanced treatment module through a pipeline, the advanced treatment module is a three-dimensional electrode treatment module, and comprises a titanium mesh electrode anode coated with a Ti / IrO2-Ta2O5-SnO2 coating, a stainless steel mesh electrode cathode and a carbon nanotube film arranged between the cathode and the anode, the carbon nanotube film is in contact with the titanium mesh coated with the Ti / IrO2-Ta2O5-SnO2 coating, and a power supply is arranged outside the system. The multi-stage barrier modular drinking water combined treatment process based on carbon nanotube-electrochemistry has the advantages of no need of additional chemical oxidizing agents, no secondary pollution, simple equipment, good controllability, normal-temperature and normal-pressure operation, high treatment efficiency, good treatment effect and the like.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a drinking water advanced treatment system based on a carbon nanotube-based electrochemical filter membrane. Background technique [0002] With the acceleration of my country's modernization process, the continuous development and expansion of industry, especially with the rapid development of industry and agriculture and the rapid increase of urban population, a large amount of industrial wastewater and domestic sewage are not treated up to standards and are directly discharged, making the surface of many cities and towns in our country Water sources have been polluted to varying degrees. The types and quantities of organic matter in surface water have greatly increased. Many trace organic pollutants, soluble chemicals, and oxidation and disinfection by-products that are toxic to humans have been found in drinking water. At the same time, people's requirements for the qua...

AI Technical Summary

Problems solved by technology

At present, most water plants in my country mainly adopt conventional drinking water treatment processes centered on chemical coagulation, sedimentation, and sand filtration. This process is difficult to effectively solve the above water quality problems, and cannot guarantee the safety of treated water; therefore, some It is necessary to develop a new drinking water treatment process suitable for the existing water quality to ensure the health of drinking water for residents

[0003] Although Fenton's advanced oxidation technology can produce a large number of hydroxyl radicals (OH) with strong oxidizing ability to treat a variety of toxic substances, such as vinyl chloride, chlorobenzene, phenol, polychlorinated biphenyls, etc., the problem that still exists is that Fe 2+ Due to the extensive use of catalysts, the operating cost is increased, accompanied by a large amount of sludge Fe(OH) 3 production

Patent No. CN200710118277.4 (Application Publication No. CN101337703A) Chinese invention patent "Method of using carbon nanotube sol for water treatment" uses carbon nanotube sol to adsorb and remove pollutants in water, and utilizes sol-state carbon in carbon nanotube sol The huge surface effect of nanotubes solves the efficient adsorption and removal of inorganic pollutants and organic pollutants, but there are still problems that carbon nanotubes are difficult to disperse and separate from the effluent, which seriously affects the process in practice. Applications

Images