Advanced oxidation and multistage biochemical combination waste water treatment system and technological method

Abstract

The invention belongs to waste water treatment, and in particular relates to an advanced oxidation and multistage biochemical combination waste water treatment system and a technological method thereof. The invention provides the advanced oxidation and multistage biochemical combination waste water treatment system, comprising a multistage biochemical combination waste water treatment system; the multistage biochemical combination waste water treatment system consists of a plurality sections of biochemical wastewater treatment systems; each section of biochemical wastewater treatment system consists of a plurality of single-stage biochemical reaction devices; each single-stage biochemical wastewater treatment system is internally provided with an advanced oxidation system which is connected with one of the single-stage biochemical reaction devices. The advanced oxidation and multistage biochemical combination waste water treatment system provided by the invention breaks through thelimitation of a multistage biochemical combination waste water treatment system and enables waste water to be better treated. The invention also provides the method for treating the waste water by utilizing the advanced oxidation and multistage biochemical combination waste water treatment system.

Description

technical field [0001] The invention belongs to waste water treatment, in particular to a waste water treatment system and process method combining advanced oxidation and multi-stage biochemistry. Background technique [0002] With the development of industrial production technology, a large number of artificially synthesized organic compounds that have never appeared in nature have been produced in industrial production, and wastewater with complex components is discharged during the production process, which contains a wide variety of toxic, harmful, difficult to Biodegradable organic pollutants belong to highly difficult organic wastewater. These wastewaters are difficult to degrade and treat by simply using biological methods or traditional physical and chemical methods. In recent years, my country has done a lot of research and technological development in the field of these wastewater treatment, but the corresponding task of environmental protection technology innovati...

AI Technical Summary

Problems solved by technology

Among them, Fenton and biological combination methods are mostly used in research and experiments, but the pH conditions of the Fenton method are strict, and the dosing ratio needs to be adjusted many times. Precipitation, easy to produce a large amount of sludge and hazardous waste, resulting in secondary pollution, the device occupies a large area, many ancillary facilities, complex dosing and connection, cumbersome operation control and management, difficult to stabilize the treatment effect, and will have an impact on subsequent biological methods

The activated sludge method is mostly used in the biological method, but the activated sludge method has a large area of ​​civil construction tanks, is greatly affected by the impact load of wastewater and climate temperature, and produces a large amount of residual biochemical sludge, which is not easy to dispose of.

[0004] Biological methods mainly include biological methods including anaerobic-aerobic biological treatment A / O method and anaerobic-anoxic-aerobic biological treatment A2 / O method. The above methods can be connected in multiple levels, generally called multi-level biochemical Combination, but there is a problem in the above method, the above biochemical treatment process, after a period of time, the pollutants in the sewage can no longer be further treated after the pollutants have reached a certain level of treatment, which is generally called the limit. The reason is that there are three kinds of biological characteristics, aerobic, anaerobic and anoxic, which are aimed at different pollutants in sewage, but the existing biochemical treatment cannot treat all pollutants or only certain kinds of pollutants, such as Anaerobic-aerobic biological treatment A / O method, the sewage is first treated by anaerobic organisms, and then aerobic biological treatment, but if there are many pollutants in the sewage that need to be treated by anoxic organisms, such as ammonia nitrogen, It will not be able to carry out effective degradation treatment. Moreover, the amount of pollutants treated by anaerobic bioenergy and aerobic bioenergy in water is more or less. This treatment method will soon reach the limit value, even if there are more anaerobic bioenergy Oxygen-aerobic connection, also cannot further treat sewage

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