Microaerobic biological treatment system and method for degrading cyclic compounds in coal pyrolysis wastewater

Abstract

A microaerobic biological treatment system and method for degrading cyclic compounds in coal pyrolysis wastewater relate to the technical field of sewage treatment. The purpose of the present invention is to solve the problems in the prior art that both semi-coke and activated coke are difficult to regenerate, energy consumption and cost are high, and sludge carriers such as powdered activated carbon or activated coke powder are easy to cause blockage to advanced treatment membranes and advanced oxidation equipment question. Method: Start the submersible mixer to send air to pool a through the microporous air disc aeration device, and the coal pyrolysis wastewater enters pool b after being adsorbed by magnetically modified activated coke and synergistically degraded by sludge-biofilm. After the adsorption and filtration of the semi-coke, it enters the ring-shaped outlet weir, and after being intercepted by the sawtooth structure of the ring-shaped outlet weir, it flows out through the outlet pipe to complete the degradation of ring compounds in coal pyrolysis wastewater. The invention can obtain a micro-aerobic biological treatment system and method for degrading coal pyrolysis wastewater cyclic compounds.

Description

technical field

[0001] The invention relates to the technical field of sewage treatment, in particular to a microaerobic biological treatment system and method for degrading cyclic compounds in coal pyrolysis wastewater. Background technique

[0002] Coal chemical industry wastewater contains a large number of ring-shaped organic substances, most of which have strong biological toxicity and carcinogenicity, and are the most important refractory and dangerous substances in coal chemical industry wastewater. Coal chemical wastewater treatment takes biological treatment as the core, and anaerobic-anoxic-aerobic-based biological treatment and subsequent advanced oxidation and membrane bioreactor are the mainstream treatment processes. However, aerobic treatment in traditional biological treatment generally consumes a lot of energy, and it is difficult to remove cyclic compounds, which leads to increased energy consumption and material consumption in subsequent advanced oxidation...

Examples

specific Embodiment approach 1

[0029]Specific Embodiment 1: In this embodiment, a micro-aerobic biological treatment system is a semi-underground cylindrical structure, including a micro-aerobic active coke carrier mobile biological bed system, a semi-coke filter layer system, and a material recovery system. The coke carrier mobile biological bed system is located below the ground 19. The micro-oxygen activated coke carrier mobile biological bed system includes a blower 1, a microporous air disc aeration device 2, a water inlet pipe 3, at least one submersible mixer 4, activated sludge, and a magnetic reformer. Active coke 5, multi-parameter water quality monitor 6 and pool a 20, the semi-coke filter layer system includes filter material support layer 7, semi-coke 11, water outlet pipe 13, liquid level sensor 15, pressure measuring tube 16, annular water outlet Weir 18 and pool b 21, the material recovery system includes electromagnetic lifting pulley device 9 and electromagnetic recovery device 10;

[0030...

specific Embodiment approach 2

[0031] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the material recovery system also includes a staircase 12, a movable cover 14 and a filter material replacement platform 17, and the movable cover 14 is arranged on the microaerobic biological treatment At the top of the system, a staircase 12 is arranged on one side of the microaerobic biological treatment system, and the top of the staircase 12 is a filter replacement platform 17.

[0032] Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0033] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the filter material support layer 7 is composed of an upper and lower structure, and the upper and lower structures are vertically provided with support layer holes 8, and the upper and lower structures The holes 8 in the supporting layer are dislocated, and the inner wall of the top of the annular outlet weir 18 is evenly distributed with a sawtooth structure along the horizontal direction.

[0034] Other steps are the same as those in Embodiment 1 or 2.

technical field

[0001] The invention relates to the technical field of sewage treatment, in particular to a microaerobic biological treatment system and method for degrading cyclic compounds in coal pyrolysis wastewater. Background technique

[0002] Coal chemical industry wastewater contains a large number of ring-shaped organic substances, most of which have strong biological toxicity and carcinogenicity, and are the most important refractory and dangerous substances in coal chemical industry wastewater. Coal chemical wastewater treatment takes biological treatment as the core, and anaerobic-anoxic-aerobic-based biological treatment and subsequent advanced oxidation and membrane bioreactor are the mainstream treatment processes. However, aerobic treatment in traditional biological treatment generally consumes a lot of energy, and it is difficult to remove cyclic compounds, which leads to increased energy consumption and material consumption in subsequent advanced oxidation...

Examples

specific Embodiment approach 1

[0029]Specific Embodiment 1: In this embodiment, a micro-aerobic biological treatment system is a semi-underground cylindrical structure, including a micro-aerobic active coke carrier mobile biological bed system, a semi-coke filter layer system, and a material recovery system. The coke carrier mobile biological bed system is located below the ground 19. The micro-oxygen activated coke carrier mobile biological bed system includes a blower 1, a microporous air disc aeration device 2, a water inlet pipe 3, at least one submersible mixer 4, activated sludge, and a magnetic reformer. Active coke 5, multi-parameter water quality monitor 6 and pool a 20, the semi-coke filter layer system includes filter material support layer 7, semi-coke 11, water outlet pipe 13, liquid level sensor 15, pressure measuring tube 16, annular water outlet Weir 18 and pool b 21, the material recovery system includes electromagnetic lifting pulley device 9 and electromagnetic recovery device 10;

[0030...

specific Embodiment approach 2

[0031] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the material recovery system also includes a staircase 12, a movable cover 14 and a filter material replacement platform 17, and the movable cover 14 is arranged on the microaerobic biological treatment At the top of the system, a staircase 12 is arranged on one side of the microaerobic biological treatment system, and the top of the staircase 12 is a filter replacement platform 17.

[0032] Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0033] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is: the filter material support layer 7 is composed of an upper and lower structure, and the upper and lower structures are vertically provided with support layer holes 8, and the upper and lower structures The holes 8 in the supporting layer are dislocated, and the inner wall of the top of the annular outlet weir 18 is evenly distributed with a sawtooth structure along the horizontal direction.

[0034] Other steps are the same as those in Embodiment 1 or 2.

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