Sludge ozone oxidation and reduction device and use method thereof

Abstract

The invention belongs to the technical field of environmental engineering sludge treatment, and provides a sludge ozone oxidation and reduction device and a use method thereof. The sludge ozone oxidation and reduction device comprises a water inlet pipe, an anaerobic tank, an anoxic tank, an aerobic tank and a secondary settling tank, and further comprises a first regulating and storage tank, an ozone reaction kettle, a second regulating and storage tank and a backflow pipe, wherein an automatic control switch is arranged below the first regulating and storage tank, the first regulating and storage tank is connected with the ozone reaction kettle through the automatic control switch and a pipeline, one side of the first regulating and storage tank is connected with the secondary settling tank through the pipeline, and the other side of the first storage tank is connected with a water outlet pipe; a stirrer is arranged inside the ozone reaction kettle, one side of the ozone reaction kettle is connected with the second regulating and storage tank through a residual activated sludge pipe, and the other side of the ozone reaction kettle is connected with an ozone generator through an ozone dosing pipe; the second regulating and storage tank is respectively connected with the anaerobic tank and the ozone reaction kettle through the pipeline; the backflow pipe is provided with a backflow pump, one end of the backflow pipe is connected with the anaerobic tank, and the other end of the backflow pipe is connected with the residual activated sludge pipe. The sludge ozone oxidation and reduction device and the use method thereof have the advantages of full reaction between ozone and sludge, easiness in process control, small sludge dosage, low cost, high ozone utilization rate and maximum utilization of resources.

Description

technical field [0001] The invention belongs to the technical field of environmental engineering sludge treatment, and in particular relates to a sludge ozone oxidation reduction device and a use method. Background technique [0002] At present, the activated sludge method is a treatment method commonly used in urban domestic sewage plants, and it has a history of nearly a hundred years. A large amount of sludge will be generated during the activated sludge treatment process. The sewage plant needs to concentrate, dehydrate and digest the generated sludge. The treated sludge needs to be landfilled, composted or incinerated later. , such a cumbersome sludge treatment and disposal process requires very high costs as a support, which can account for 25%-60% of the total operating costs of the entire sewage treatment plant, and the cost is very high. However, if the post-treatment cost is reduced in the existing technology, The sludge will not be effectively treated, causing se...

AI Technical Summary

Problems solved by technology

[0005] The currently used ozone oxidation methods are all continuous, and there are problems such as insufficient control of the reaction process, low utilization rate of ozone, large dosage, high cost, insufficient reaction of ozone and sludge, and failure to maximize the use of resources.

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