Highly efficient water treatment method by aerobic circulating biological expansion bed and reactor thereof

Abstract

The high-efficiency water treatment method for aerobic cycle biological expansion bed comprises: using the distribution gas device on reaction tower bottom and light biological particle of aerobic bed to take water treatment to biological reaction with aerobic biological reaction tower as main; and controlling the flow rising speed in tower to achieve need expansion state. The opposite reactor comprises a biological reaction unit, a water cycle unit with a collection pond for output water and cycle pump, an aerobic bed unit. The advantages of this invention include: high organic load, short startup period and stable running.

Description

technical field [0001] The invention relates to an aerobic biological treatment method and equipment for organic waste water, in particular to a water treatment method and a reactor of a high-efficiency aerobic circulating biological expanded bed, in particular to an aerobic biological reactor of an expanded bed of a biological particle carrier. Background technique [0002] High-efficiency aerobic bioreactors must have the following characteristics: ①Maximize the concentration of active organisms per unit volume; ②The contact area between sewage and biofilm should be large to make full use of the effective space; ③Between sewage and biofilm The relative motion speed should be large to enhance mass transfer; ④The remaining biofilm is easy to peel off, which can effectively and reliably control the growth of microbial biomass; ⑤It has a strong oxygenation capacity. [0003] The biological fluidized bed is filled with small inert particles such as s...

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Problems solved by technology

However, the disadvantages of the two are also obvious. The consumption of the biological fluidized bed is high, and the reactor is difficult to scale up. At present, it is rarely used in practice.

However, biological filters have problems such as clogging of filter materials, large floor area, uneven distribution of water, and low treatment efficiency in varying degrees.

[0006] The new high-efficiency and energy-saving aerobic bioreactor has a lot of use, especially when dealing with wastewater with a COD of about 100 to 300 (including the so-called reclaimed water), although this part of the water with a low COD value can meet the discharge standards , but it is still difficult to meet the water reuse requirements at all levels. It is difficult to further reduce COD with ordinary aerobic or anaerobic biological treatment methods, and the cost of fine filtration or chemical treatment is high. For this reason, new methods are necessary and technology emerges

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