Method and device for rapidly realizing stable short-range nitrification of urban domestic sewage by using bioaugmentation technology combined with real-time control

A technology of short-range nitrification and real-time control, applied in biological water/sewage treatment, chemical instruments and methods, sustainable biological treatment, etc., can solve problems such as difficulty in starting short-range nitrification

Active Publication Date: 2021-09-10
BEIJING UNIV OF TECH
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Problems solved by technology

[0007] In order to solve the problem of difficult start-up of short-cut nitrification in the new denitrification process for treating urban domestic sewage, this study proposes a method and device for rapidly realizing stable short-cut nitrification of urban domestic sewage by using bioaugmentation technology combined with real-time control

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  • Method and device for rapidly realizing stable short-range nitrification of urban domestic sewage by using bioaugmentation technology combined with real-time control
  • Method and device for rapidly realizing stable short-range nitrification of urban domestic sewage by using bioaugmentation technology combined with real-time control

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[0025] In conjunction with the accompanying drawings and examples, the patent application is further described: as figure 1 As shown, the present invention includes a first sequence batch reactor, a second sequence batch reactor, a mud storage tank, and a domestic sewage water tank for treating high ammonia nitrogen wastewater. The effective volumes of the four devices are 10L, 10L, 5L and 30L respectively. The first sequence batch reactor and the second sequence batch reactor are made of plexiglass, and the mud storage tank and domestic sewage tank are made of organic plastic.

[0026] The device includes a short-range nitrification first-order batch reactor (9) for treating high-ammonia-nitrogen wastewater connected to a sludge storage tank (10), and an aeration disc is installed in the first-order batch reactor (9) to connect with a first air compressor (13) and first agitator (3). The short-path nitrification sludge discharged from the first sequence batch reactor every ...

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Abstract

The invention discloses a method and device for quickly realizing stable short-range nitrification of urban domestic sewage by using bio-augmentation technology combined with real-time control, and belongs to the field of domestic sewage treatment with low carbon-to-nitrogen ratio. Reactors for treating high ammonia nitrogen wastewater In the first-order batch reactor, short-cut nitrification is realized through free ammonia (FA) and real-time control, and the short-cut nitrification sludge is discharged every cycle for storage, and organic matter and nitrogen are carried out in the second-order batch reactor. The removal of short-range digested sludge is added in the anoxic section for bioaugmentation, and through long-term anoxic combined with real-time control, AOB is rapidly enriched in the reactor, NOB is inhibited, and the rapid realization of stable short-range nitrification for deep denitrification is achieved. Purpose. The invention can quickly realize the stable short-range nitrification effect, save aeration energy consumption, reduce the demand for denitrification carbon sources, and at the same time have a very good effect on the recovery and stability of short-range nitrification in domestic sewage after it is destroyed, and can significantly improve urban domestic sewage. The efficiency of nitrogen and phosphorus removal.

Description

technical field [0001] The present invention designs a method and device for quickly realizing stable short-range nitrification of urban domestic sewage by using bio-augmentation technology combined with real-time control, and belongs to the technical field of domestic sewage treatment with low carbon-to-nitrogen ratio. short-range nitrification method. Background technique [0002] The traditional biological nitrogen and phosphorus removal process is a whole-process nitrification and denitrification process, which requires high aeration energy consumption and carbon sources to meet the needs of nitrogen and phosphorus removal. The short-cut nitrification and denitrification technology can save about 25 % aeration rate, reduce carbon source demand by 40%, greatly shorten reaction time, and reduce sludge production. The key to short-term nitrification is to enrich ammonia oxidizing bacteria (AOB) and inhibit nitrite oxidizing bacteria (NOB) so that the nitrite accumulation r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F3/30C02F3/12C02F3/34C02F101/16
CPCY02W10/10
Inventor 彭永臻邱圣杰刘瑾瑾张琼
Owner BEIJING UNIV OF TECH
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