Sulfur autotrophic denitrification sludge granulation and sulfur mud separation device and operation method thereof

Abstract

The invention relates to a sulfur autotrophic denitrification sludge granulation and sulfur mud separation device and an operation method thereof. The device comprises a sealed reactor main body, a three-opening air bag, a water inlet tank and a water outlet tank, wherein an air outlet is formed in the top of the reactor main body; an air outlet is formed in the bottom of the reactor main body; both the air outlet and the air inlet are respectively accessed to two air inlet / outlet holes of the three-opening air bag through air tubes; a water outlet and a water inlet are sequentially formed inthe side wall of the reactor main body from top to bottom; the water outlet is accessed to the water outlet tank through a water tube; and the water inlet is accessed to the water inlet tank through awater tube. By adopting the device, a great deal of nitrogen does not need to be introduced continuously, so that the aeration cost can be reduced; an internal air circulation system has stable pressure, and problems such as back sucking and blocking of inlet / outlet water can be avoided; a sulfur autotrophic denitrification product, namely elementary sulfur, can be adhered to bubbles to form floating sulfur foams, and thus mud separation can be achieved; and because of periodic self operation, labor consumption can be reduced, and the cost can be reduced.

Description

technical field [0001] The invention relates to the technical field of wastewater treatment, in particular to a sulfur autotrophic denitrification sludge granulation and sulfur mud separation device and an operating method thereof. Background technique [0002] At this stage, nitrogen and sulfur pollution of water bodies is serious. With increasingly stringent water quality standards, sewage and wastewater must be treated to meet the standards before they can be discharged. Traditional heterotrophic denitrification faces the problem of lack of electron donors and high cost of adding carbon sources. At the same time, desulfurization also faces the problem of lack of electron acceptors, which makes it difficult to deal with. [0003] In view of the existing problems in nitrogen and sulfur removal, sulfur autotrophic denitrification process has become the focus of research. Sulfur autotrophic denitrification refers to the use of thiosulfate, elemental sulfur, sulfide, etc. An...

AI Technical Summary

Problems solved by technology

Traditional heterotrophic denitrification faces the problem of lack of electron donors and high cost of adding carbon sources. At the same time, desulfurization also faces the problem of lack of electron acceptors, which is difficult to deal with

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