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Electric enhanced internal circulation anaerobic reactor and method thereof

A technology of anaerobic reactor and anaerobic reaction zone, which is applied in the field of electric enhanced internal circulation anaerobic reactor, can solve the problems of poor sludge activity, low COD removal rate, and treatment effect to be further improved, so as to improve the reliability Biochemical property, improvement of treatment effect, effect of enhancing detoxification ability

Pending Publication Date: 2020-09-15
NANJING INNOVATION CENT FOR ENVIRONMENTAL PROTECTION IND
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  • Claims
  • Application Information

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Problems solved by technology

[0007] Aiming at the problems that the IC anaerobic reactor has poor sludge activity, low COD removal rate, and treatment effect to be further improved in the existing wastewater treatment technology, the present invention provides an electric-enhanced internal circulation anaerobic reactor and its method

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  • Electric enhanced internal circulation anaerobic reactor and method thereof
  • Electric enhanced internal circulation anaerobic reactor and method thereof

Examples

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Effect test

Embodiment 1

[0055] The COD of a chemical wastewater after pretreatment is 1200-1400mg / L, BOD 5 It is 200-300mg / L, and the B / C ratio is about 0.2.

[0056] An electrically enhanced internal circulation anaerobic reactor in this embodiment includes a reactor body 100, which is provided with an electrochemically activated detoxification zone 110, a first anaerobic reaction zone 120, a second anaerobic reaction zone Reaction zone 130 , precipitation zone 140 and internal circulation unit 150 . Wherein the number of the electrochemical unit 111 in the electrochemical activation detoxification area 110 is 1, the shell 1113 of the electrochemical unit 111 is a stainless steel mesh (accuracy is 100 microns), built-in two graphite electrode plates, the negative electrode 1110 adopts graphite electrodes, The anode 1111 adopts a graphite electrode, and the middle of the pole plate is filled with an iron-carbon filler layer 1112 (wherein, the filler particle diameter in the iron-carbon filler layer ...

Embodiment 2

[0059] The basic content of this embodiment is the same as that of Embodiment 1, except that the water quality COD of a certain pharmaceutical wastewater after pretreatment is 13162mg / L, BOD 5 It is 3412mg / L, and the B / C ratio is about 0.27.

[0060] An electrically enhanced internal circulation anaerobic reactor in this embodiment includes a reactor body 100, which is provided with an electrochemically activated detoxification zone 110, a first anaerobic reaction zone 120, a second anaerobic reaction zone Reaction zone 130 , precipitation zone 140 and internal circulation unit 150 . Wherein the number of the electrochemical cells 111 in the electrochemical activation detoxification area 110 is 7, the shell 1113 of the electrochemical cell 111 is a stainless steel mesh (accuracy is 500 microns), the negative electrode 1110 adopts a stainless steel electrode, and the anode 1111 adopts a ruthenium iridium titanium electrode , the middle of the pole plate is filled with an iron-...

Embodiment 3

[0063] The basic content of this embodiment is the same as that of Example 1, except that the water quality COD of a certain tannery wastewater after pretreatment is 2000mg / L, BOD 5 It is 800mg / L, and the B / C ratio is about 0.4.

[0064] An electrically enhanced internal circulation anaerobic reactor in this embodiment includes a reactor body 100, which is provided with an electrochemically activated detoxification zone 110, a first anaerobic reaction zone 120, a second anaerobic reaction zone Reaction zone 130 , precipitation zone 140 and internal circulation unit 150 . Wherein the number of the electrochemical unit 111 in the electrochemical activation detoxification area 110 is 2, the shell 1113 of the electrochemical unit 111 is a stainless steel mesh (accuracy is 1000 microns), the negative electrode 1110 adopts a graphite electrode, and the anode 1111 adopts a graphite electrode. The middle of the plate is filled with an iron-carbon filler layer 1112 (wherein, the fille...

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Abstract

The invention discloses an electric enhanced internal circulation anaerobic reactor and a method thereof, and belongs to the field of wastewater treatment. According to the electric enhanced IC anaerobic reactor, an electrochemical unit is arranged in the reactor body, and through the combination of a three-dimensional electrode and an iron-carbon filler, toxic pollutants in wastewater are quicklyoxidized and degraded, so that the biodegradability of the wastewater is improved, the stable operation of the reactor is ensured, and the treatment effect is improved; furthermore, through the reduction effect of iron-carbon micro-electrolysis, the sludge in the reactor is continuously reduced and detoxified, and meanwhile, the generated ferrous iron and ferric iron assist the anaerobic sludge to form granules, so that the purpose of activating the sludge is achieved.

Description

technical field [0001] The invention belongs to the field of wastewater treatment, and more specifically relates to an electric-enhanced internal circulation anaerobic reactor and a method. Background technique [0002] The internal circulation (IC) anaerobic reactor is a new generation of high-efficiency anaerobic reactor. Wastewater flows from bottom to top in the reactor, pollutants are adsorbed and degraded by bacteria, and treated water flows out from the upper part of the reactor. The IC anaerobic reactor has a high rising flow rate and volume load, and requires a small footprint; at the same time, the introduction of graded treatment further enhances the impact load resistance. [0003] After searching, it was found that the application number 201710457798.6 and the Chinese invention patent application dated June 16, 2017 disclosed an IC anaerobic reactor, including a tank, a mixing zone, a first anaerobic zone, a lower three-phase separator, The second anaerobic zon...

Claims

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Application Information

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IPC IPC(8): C02F9/14C02F3/28C02F1/461C02F1/467
CPCC02F9/00C02F3/2873C02F1/46109C02F1/467C02F2001/007C02F2301/08C02F2001/46133C02F2209/08
Inventor 姜笔存贺雨舟屈晋云谈政焱刘浩亮
Owner NANJING INNOVATION CENT FOR ENVIRONMENTAL PROTECTION IND
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