Aerobic and anoxic dual-purpose wastewater treatment biological expansion bed device and process

Abstract

The invention discloses an aerobic and anoxic dual-purpose wastewater treatment biological expansion bed device and a process. The aerobic and anoxic dual-purpose wastewater treatment biological expansion bed device includes a feed tank, a feed pump, a biological expansion bed, an ultrasonic cleaning device, a heating circulation device, a circulation pump, a gas flow meter and a gas automatic control device. By regulating of the rising flow rate of circulating water, a packed bed can run in an expansion state to avoid short circuit in a water flow and improve a substrate removal load. The aerobic and anoxic dual-use wastewater biological expansion bed device has the advantages of flexible operation, stability, small footprint and quick start-up speed, can handle different concentrations of wastewater, has a wide range of applications, is particularly suitable for the characteristics of large changes in wastewater quality and volume caused by rapid upgrade of products and large changesof yield of Chinese enterprises in the prior art, and can effectively improve current situations of high vacancy rate and high mortality of environmental protection facilities in the prior art.

Description

technical field [0001] The invention belongs to the technical field of chemical industry and environmental protection, and relates to a waste water treatment device and process, and furthermore, relates to an aerobic-anoxic biological expanded bed device and process for waste water treatment. Background technique [0002] With the increasingly serious water pollution in China and the improvement of sewage discharge standards in the future, sewage treatment is facing severe challenges, especially in the field of industrial sewage treatment, which has a large amount of sewage discharge and complex water quality. The treatment of industrial wastewater has always been dominated by biological treatment. The aerobic biological treatment process has the advantages of good effluent quality and low treatment cost. The anoxic denitrification treatment process can not only improve the biochemical degradation range and removal rate of organic components, but also remove nitrate nitroge...

AI Technical Summary

Problems solved by technology

However, only suspended fillers are used for treatment, and the effluent contains a higher concentration of particulate matter and suspended matter, resulting in higher turbidity

In the traditional sand filtration process, due to the high density of sand and other fillers, the relative filling rate is low, and the effective utilization rate of the reactor is correspondingly reduced; at the same time, it is easy to cause blockage during process operation, which is not conducive to process operation

[0004] In addition, my country's "three simultaneous" policy in terms of environmental protection requires enterprises to build sewage treatment systems while building production lines. General environmental protection facilities have a narrow range of use and cannot keep up with production changes. It is difficult to realize multiple modes of operation without changing existing equipment, resulting in inefficient operation of water treatment facilities, high idle rate and elimination rate

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