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Sewage digestion treatment device and sewage digestion treatment method

A treatment device and digestion device technology, applied in water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve problems such as many device modules, operator hazards, and difficulty in meeting market demand

Active Publication Date: 2019-07-16
INST OF ENVIRONMENTAL MEDICINE & OCCUPATIONAL MEDICINE ACAD OF MILITARY MEDICINE ACAD OF MILITARY SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, Chinese patent 201010227401.2 discloses an ultrasonic atomization high-voltage discharge combined with ozone ultraviolet oxidation and digestion device, which oxidizes samples through the combined action of ultrasonic atomization, high-voltage corona, ozone, and ultraviolet; although this method can be completed in a short time Digestion, but many device modules are required, which is suitable for fixed water quality monitoring points; in addition, Chinese patent 201510299166.2 discloses an electrochemical digestion device and its digestion method, which digests samples through the combined action of ozone and electrochemical oxidation. A large amount of ozone will be generated during the process, which is easy to cause harm to the operator. In theory, it is necessary to use hydrochloric acid and other reagents to adjust the pH of the solution in the digestion tank to avoid the precipitation of metal ions.
[0003] To sum up, it can be seen that the above-mentioned wet digestion device has many device modules or involves high-risk reagents, which makes it difficult to meet market demand

Method used

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  • Sewage digestion treatment device and sewage digestion treatment method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] in such as figure 1 Sewage digestion treatment is carried out in the sewage digestion treatment device shown:

[0056] Provide artificial simulated sewage: the concentration of ammonia nitrogen is 40-50mg / L, the concentration of total nitrogen is 45-55mg / L, and the concentration of total phosphorus is 3-5mg / L;

[0057] The artificial simulated sewage and NaCl are placed in the anode digestion device, so that the mass concentration of NaCl in the anode digestion device is 10%;

[0058] Pure water and NaCl are placed in the cathode reaction device, so that the mass concentration of NaCl in the cathode reaction device is 10%;

[0059] Set the ultrasonic power to 30w, the ultrasonic frequency to 40kHz, the stirring speed to 500rpm, and the potential of the working electrode to 1.5v for ultrasonic coupled electrochemical digestion. After 15 minutes, the total nitrogen digestion rate in the artificially simulated sewage was 76%, and the phosphorus digestion rate was 92.4%. ...

Embodiment 2

[0061] in such as figure 1 Sewage digestion treatment is carried out in the sewage digestion treatment device shown:

[0062] Provide environmental sewage: the concentration of ammonia nitrogen is 27.1mg / L, the concentration of total nitrogen is 34mg / L, the concentration of total copper is 1.2mg / L, and the concentration of total zinc is 2.7mg / L;

[0063] The environmental sewage and NaCl are placed in the anode digestion device, so that the mass concentration of NaCl in the anode digestion device is 10%;

[0064] Pure water and NaCl are placed in the cathode reaction device, so that the mass concentration of NaCl in the cathode reaction device is 10%;

[0065] Set the ultrasonic power to 30w, the ultrasonic frequency to 40kHz, the stirring speed to 500rpm, and the working electrode potential to 1.5v to perform ultrasonic coupled electrochemical digestion. After 15 minutes, the total nitrogen digestion rate in the artificially simulated sewage was 63.9%, and the copper digesti...

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Abstract

The invention relates to the technical field of sewage digestion treatment, in particular to a sewage digestion treatment device and a sewage digestion treatment method. The sewage digestion treatmentdevice comprises a power supply control module, an anode digestion device, a NaCl salt bridge and a cathode reaction device; the anode digestion device and the cathode reaction device are connected through the NaCl salt bridge; the anode digestion device comprises an anode digestion tank, a reference electrode, an ultrasonic wave oscillator and a working electrode; the power supply control moduleand the reference electrode are electrically connected; the power supply control module and the ultrasonic wave oscillator are electrically connected; and the power supply control module and the working electrode are electrically connected. According to records, the device has a high digestion rate when used for digesting sewage samples.

Description

technical field [0001] The invention relates to the technical field of sewage digestion treatment, in particular to a sewage digestion treatment device and a sewage digestion treatment method. Background technique [0002] At present, the traditional wet digestion method is mainly used for sewage digestion treatment, which uses inorganic strong acids (perchloric acid, concentrated sulfuric acid, concentrated nitric acid, etc.) The organic matter in the sample is oxidatively decomposed. On this basis, traditional wet digestion usually uses electric heating plates, muffle furnaces, microwave digestion instruments, etc. to enhance and accelerate the digestion process. For example, Chinese patent 201010227401.2 discloses an ultrasonic atomization high-voltage discharge combined with ozone ultraviolet oxidation and digestion device, which oxidizes samples through the combined action of ultrasonic atomization, high-voltage corona, ozone, and ultraviolet; although this method can ...

Claims

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Application Information

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IPC IPC(8): C02F1/461
CPCC02F1/46104
Inventor 李辰宇王景峰邱志刚赵润谌志强王尚薛斌赵辰
Owner INST OF ENVIRONMENTAL MEDICINE & OCCUPATIONAL MEDICINE ACAD OF MILITARY MEDICINE ACAD OF MILITARY SCI
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