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Use of supersonic wave in sewage treatment biological denitrification

A technology for sewage treatment and biological denitrification, applied in biological water/sewage treatment, water/sludge/sewage treatment, mechanical oscillation water/sewage treatment, etc. The effect of convenient operation and broad application prospects

Active Publication Date: 2015-07-01
TSINGHUA UNIV
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  • Description
  • Claims
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Problems solved by technology

[0006] The purpose of the present invention is to provide a simple and feasible method for realizing the stable short-range nitrification process of a bioreactor, so as to solve the problems of difficult operation and instability in control methods such as temperature, pH, dissolved oxygen, and sludge age

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  • Use of supersonic wave in sewage treatment biological denitrification
  • Use of supersonic wave in sewage treatment biological denitrification

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Embodiment Construction

[0017] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention. Unless otherwise specified, the technical means used in the examples are conventional means well known to those skilled in the art, and the raw materials used are all commercially available products.

[0018] Embodiment Using ultrasonic wave to excite short-range nitrification process to carry out efficient denitrification method of sewage

[0019] In this embodiment, the ultrasonic probe of the ultrasonic generator is placed on the activated sludge sewage treatment system (activated sludge sewage treatment device), and according to the characteristics of the sludge, the ultrasonic frequency is controlled at 20-60kHz, and the ultrasonic power Controlled at 30-100W, ultrasonic time controlled at 2-4h.

[0020] figure 1 is a schematic diagram of a first exemplary embodiment of the device of the present invention. According to the size o...

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Abstract

The invention relates to a use of supersonic wave in sewage treatment biological denitrification. A short-distance nitration process is stimulated by supersonic wave so that sewage is subjected to high efficiency denitrification. The short-distance nitration comprises that in a microbe nitration reaction, ammonia nitrogen is oxidized into nitrite and nitrate is not produced A supersonic generator probe is arranged in an aeration tank of an activated sludge process-based sewage treatment system or is connected in a sludge return pipe in series so that the short-distance nitration is stably realized by a bioreactor. The microbe screening characteristics of supersonic wave realizes stimulation of activity of nitrite bacteria and inhibits activity of nitrite bacteria. Supersonic wave is convenient for operation, has stable effects and has a wide application prospect in a sewage treatment biological denitrification technology.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment biological denitrification, and in particular relates to the application of ultrasonic waves in sewage treatment biological denitrification. Background technique [0002] Excessive nitrogen concentration in water will lead to overgrowth of certain algae, trigger eutrophication of water body, deteriorate water quality and destroy aquatic ecosystem. Realizing denitrification of sewage before discharge into the environment is one of the fundamental methods to solve this problem. The traditional biological denitrification process includes nitrification and denitrification processes, but because the carbon and nitrogen ratio of domestic municipal sewage is usually low, the traditional A 2 / O and other activated sludge biological denitrification processes often have the problem of lack of organic carbon sources, and the efficiency of biological denitrification is low. [0003] Short-cut nitrif...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/12C02F3/34
CPCC02F1/36C02F3/303Y02W10/10
Inventor 汪诚文郑敏谢淘宋楚雯
Owner TSINGHUA UNIV
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