A treatment method for refractory organic wastewater

Abstract

The invention discloses a treatment method of refractory organic wastewater. The treatment method comprises the following steps: collecting the refractory organic wastewater, and adding aluminum-carbon nanotube-ferroferric oxide compound particles into the wastewater; adjusting a pH value of the wastewater to acidity and stirring and reacting under the condition of introducing oxygen; after the reaction is finished, adjusting the pH value of a mixed solution to 6 to 9 and carrying out solid-liquid separation, thus obtaining supernatant, namely the treated water. The method disclosed by the invention is performed at normal pressure and normal temperature and has the advantages of mild reaction conditions and simple technology; H2O2, a catalyst and dosing equipment does not need to be added,so that the input is low; in addition, the added functional materials are environmentally friendly, so that secondary pollution is avoided; besides, the treatment time of the wastewater is short, andthe treatment effect is good, so the method is suitable for industrialized large-scale production.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a treatment method for refractory organic wastewater. Background technique [0002] With the continuous development of modern industry, the number and types of toxic and refractory organic pollutants (such as compounds containing aromatic rings, organic polymers, surfactants, etc.) Caused serious pollution, a direct threat to human health. The effective removal of toxic and refractory pollutants in wastewater is a key link in wastewater treatment. Numerous studies have shown that traditional biological treatment methods are difficult to achieve the ideal treatment effect, and the advanced oxidation technology using ·OH free radicals as the main oxidant is more suitable for the treatment of refractory organic wastewater. Among them, Fenton oxidation technology has attracted widespread attention in the treatment of refractory organic wastewater due to its mild reaction co...

AI Technical Summary

Problems solved by technology

[0003] The traditional Fenton oxidation technology mainly generates OH free radicals by adding ferrous ions and hydrogen peroxide to the wastewater to achieve the degradation of organic matter, but there are currently the following problems: (1) H 2 o 2 Poor stability, inconvenient transportation and storage; (2) Fenton method adapts to a narrow pH range, produces a large amount of iron sludge, and is difficult to realize the recycling of catalysts

However, the electro-Fenton method requires an external current, and a large amount of inorganic salt is required as an electrolyte in the system, which is not suitable for sewage with low conductivity; the photo-Fenton method requires high energy and high cost; the microbial fuel cell process needs to solve microbial nutrition Substance supply and biological sludge treatment issues