Long flow channel gas stripping reflux MBBR integrated system and operation method

Abstract

The invention discloses a long flow channel gas stripping reflux MBBR integrated system and operation method, and belongs to the technical field of sewage treatment. The problems that in the prior artcarbon sources are unevenly mixed and the comprehensive utilization efficiency is low in a system are solved. The long flow channel gas stripping reflux MBBR integrated system comprises an anoxic pond, an MBBR tank, a sedimentation tank, and a comprehensive device room, wherein the anoxic pond, the MBBR tank, the sedimentation tank, and the comprehensive device room are arranged in sequence, a fine bubble aerator, a nitrifying liquid reflux well, and a suspension carrier are arranged in the MBBR tank, a gas stripping device is arranged in the nitrifying liquid reflux well, a long flow channelreflux groove is formed between the MBBR tank and the anoxic pond in a connecting mode, the end located at one end of the MBBR tank serves as an outlet end, the end located at one end of the anoxic pond serves as an inlet end, the inlet end of the long flow channel reflux groove is connected with a liquid outlet added with the carbon sources, and the gas stripping device is used for lifting the nitrifying liquid in the MBBR tank into the long flow channel reflux groove. According to the long flow channel gas stripping reflux MBBR integrated system and operation method, the reflux groove of along flow channel is adopted, good dosing mixing and dissolved oxygen removal can be realized in the reflux groove, and good nitrogen and phosphorus removal effects are achieved.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment, and in particular relates to an MBBR integrated system and operation method for long channel gas stripping and reflux. Background technique [0002] At present, with the improvement of rural residents' living standards, domestic rural domestic sewage has problems such as rapid growth, wide sources, low treatment rate, and large volume. With the improvement of rural domestic sewage methods and the development of rural economy, the amount of domestic sewage has gradually increased. The scattered characteristics of villages easily lead to non-concentrated sewage, which is difficult to centralize; moreover, rural sewage comes not only from kitchen sewage and human feces, but also domestic garbage and sewage infiltrated by household cleaning. Therefore, rural sewage has the characteristics of dispersion, large changes in water quality, and large impact of water volume. Generally speaking, th...

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Problems solved by technology

[0005] At this stage, there are still some problems in the MBBR integrated system. There are many motor systems, and there are certain difficulties in operation and maintenance. Due to the problem of dissolved oxygen in the form of an air lift reflux pump, the efficiency of nitrogen and phosphorus removal is affected.

Due to the serious imbalance in the carbon-nitrogen ratio of rural sewage, carbon sources need to be added. In the process of use, there are problems of uneven mixing of carbon sources and low comprehensive utilization efficiency.

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