Preparation method of Fenton-like catalytic material and sewage treatment method

Abstract

The invention provides a preparation method of a Fenton-like catalytic material and a sewage treatment method. The preparation method of the Fenton-like catalytic material comprises the following steps: respectively preparing a manganese-copper solution containing manganous salt of divalent manganese ions and copper salt of divalent copper ions, an iron solution containing ferric salt of ferric ions and an alkaline solution containing hydroxyl salt and / or bicarbonate; adding the iron solution into the manganese-copper solution to form a manganese-copper-iron mixed solution, adding the alkalinesolution into the manganese-copper solution in the process, and controlling the process to be always carried out in an alkaline environment to generate a manganese-copper-iron complex; aging the manganese-copper-iron mixed solution to form a manganese-copper-iron complex with a layered structure; and filtering the aged manganese-copper-iron mixed solution, and drying the filtered layered manganese-copper-iron complex to enable the layered manganese-copper-iron complex to form a solid state. According to the preparation method of the Fenton-like catalytic material and the sewage treatment method provided by the invention, the catalytic effect can be improved, the operation difficulty is reduced, and the cost is reduced.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a preparation method of a Fenton-like catalytic material and a sewage treatment method. Background technique [0002] At present, due to the complex types of drainage enterprises upstream of the sewage treatment plant in the industrial park, the sewage drainage water quality in the park has a high degree of pollution and the water volume changes greatly. It is a type of industrial wastewater that is difficult to treat. Industrial parks mostly adopt hydrolysis pretreatment combined with biochemical treatment process, which can complete the biochemical degradation of easily biodegradable organic matter, but the removal effect on difficult biodegradable organic matter is poor. Fenton reaction (Fenton reaction) technology is an efficient oxidation technology, which uses a catalyst with iron ions and hydrogen peroxide (H 2 o 2 ) to generate highly oxidative hydroxyl radicals...

AI Technical Summary

Problems solved by technology

[0004] However, since the catalyst needs to be supported on activated carbon or graphene, the bonded part of the catalyst to the activated carbon or graphene still cannot be in contact with hydrogen peroxide, which leads to the unsatisfactory catalytic ability of the catalyst, resulting in poor sewage treatment effect. Good, and more expensive

Moreover, in the existing Fenton reaction technology, before the catalytic material and hydrogen peroxide are put into the sewage, the sewage needs to be adjusted to acid before it can be carried out, which makes the operation more complicated and the cost is higher

In addition, after the existing catalysts treat sewage, a large amount of iron sludge will be produced in the sewage, which makes the sewage treatment effect not good, and the iron sludge needs to be treated again, resulting in complicated operation and high cost

Images