High-efficiency aerobic granular sludge continuous flow reactor and running method

Abstract

The invention discloses a high-efficiency aerobic granular sludge continuous flow reactor and a running method. The reactor comprises a reactor main body, a water inlet system, an aeration system and a drainage system. The reactor main body consists of an aerobic granular sludge biotreatment part and a built-in high-efficiency precipitation tube, the bottom of the built-in high-efficiency precipitation tube is designed to be like a spherical surface upward protruding, the opening below the tube wall is designed to a sawtoothed arc-shaped slot, and the inner surface of the arc-shaped slot is an inclined surface upward inclining by 45 degrees. A special hemming aeration cake of the aeration system is positioned on one side of the bottom of a reactor inner cavity, and the built-in high-efficiency precipitation tube is fixedly arranged on the wall of the reactor main body. The running method comprises the following steps: 1) inoculating aerobic granular sludge; 2) injecting domestic sewage into the reactor and starting the device; and 3) after three weeks of cultivation, maturing aerobic granular sludge, and stably running the aerobic granular sludge reactor. The invention provides an integrated reactor capable of treating sewage under the continuous flow running condition.

Description

[0001] Technical field: [0002] The invention is suitable for the field of sewage biological treatment, especially suitable for continuous flow integrated aerobic granular sludge reactor and its operation method. [0003] Background technique: [0004] As a kind of microbial self-aggregation, aerobic granular sludge has the characteristics of high biological activity, various species, and microbial layer growth. Under aerobic conditions, there are aerobic, anoxic, and anaerobic microenvironments at the same time, and aerobic conditions can be realized. It is considered to be a promising wastewater biological treatment technology due to its incomparable advantages over traditional activated sludge, such as simultaneous denitrification and phosphorus removal, but the instability of aerobic granular sludge and almost all the single Reactor form, although the separation of sludge and water can be realized in the same reactor, but the SBR volume utilization rate is low, the head lo...

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Problems solved by technology

[0004] As a kind of microbial self-aggregation, aerobic granular sludge has the characteristics of high biological activity, various species, and microbial layer growth. Under aerobic conditions, there are aerobic, anoxic, and anaerobic microenvironments at the same time, and aerobic conditions can be realized. It is considered to be a promising wastewater biological treatment technology due to its incomparable advantages over traditional activated sludge, such as simultaneous denitrification and phosphorus removal, but the instability of aerobic granular sludge and almost all the single Reactor form, although the separation of sludge and water can be realized in the same reactor, but the SBR volume utilization rate is low, the head loss is large, the water outlet is discontinuous, the peak oxygen demand is high, the equipment utilization rate is low, the operation control is complicated, and it is not suitable for large-scale The shortcoming of water volume greatly limits the application and development of this technology, resulting in the large-scale engineering application of aerobic granular sludge technology.

However, continuous flow operation can realize continuous water treatment, which has the advantages of saving floor area and simple operation control. At present, there are few reports on the reactor for cultivating aerobic granular sludge and feeding it into sewage treatment in the form of continuous water inflow.

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