Novel efficient biological treatment combined device for semi-coke wastewater

Abstract

The utility model relates to the technical field of wastewater treatment, and discloses a novel efficient biological treatment combined device for semi-coke wastewater, which comprises a DO / pH probe, a water bath pool, and a water inlet pool, a first water inlet pump, an anaerobic co-metabolism reactor, a second water inlet pump, a one-section SPNA reactor and a water outlet pool which are connected in sequence, the DO / pH probe is used for detecting the dissolved oxygen content and the pH value of sewage in the anaerobic co-metabolism reactor, the DO / pH probe is used for detecting the dissolved oxygen content and the pH value of sewage in the one-stage SPNA reactor, the water bath pool is communicated with the interlayer between the inner wall and the outer wall of the anaerobic co-metabolism reactor, and the water bath pool is communicated with the interlayer between the inner wall and the outer wall of the one-stage SPNA reactor. According to the scheme, the treatment efficiency of the coal gas wastewater is integrally improved on the basis of coupling of an anaerobic co-metabolism strengthening process technology and an anaerobic ammonia oxidation process technology, and the treatment cost of the semi-coke wastewater is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater treatment, in particular to a novel high-efficiency biological treatment combined device for semi-coal wastewater. Background Art

[0002] Semi-coke is a high-carbon fuel derived from coal through high-temperature dry distillation or pyrolysis. It boasts excellent properties such as high calorific value, low ash content, and low sulfur content. It is widely used in the metallurgical, energy, and chemical industries, particularly in applications with stringent environmental requirements. Semi-coke not only provides efficient energy output but is also considered a relatively environmentally friendly fuel due to its low pollutant emissions, making it particularly suitable for industrial applications requiring clean combustion.

[0003] Semi-coking wastewater, also known as semi-coking wastewater, originates from wastewater generated during the quenching of semi-coking, residual ammonia from the low-temperature dry distillation of coal, factory cooling water, and domestic sewage. It contains high concentrations of pollutants with poor biodegradability and high biotoxicity. It is generally brown or reddish-brown in color and has a pungent odor. Semi-coking wastewater is characterized by high oil content, high ammonia nitrogen content, and high organic matter content, making it one of the most difficult industrial wastewaters to treat. Currently, even after pretreatment processes such as ammonia distillation, dephenolization, and oil removal, effluent COD and NH3-N concentrations remain high, reaching 3500-4000 mg / L for COD and 150-220 mg / L for NH3-N. Biodegradability is poor, necessitating the development of new wastewater treatment technologies with effective treatment, stable process operation, and low operating costs. Utility Model Content

[0004] The utility model aims to provide a novel and efficient biological treatment combination device for semi-coke wastewater, so as to solve the current problems of poor treatment effect and high cost of semi-coke wastewater.

[0005] To achieve the above-mentioned objectives, the present invention adopts the following technical solutions: a new type of high-efficiency biological treatment combination device for lignite wastewater, comprising: a DO / pH probe, a water bath, and an inlet pool, a first inlet pump, an anaerobic cometabolic reactor, a second inlet pump, a one-stage SPNA reactor and an outlet pool connected in sequence; the DO / pH probe is used to detect the dissolved oxygen content and pH value of the sewage in the anaerobic cometabolic reactor, the DO / pH probe is used to detect the dissolved oxygen content and pH value of the sewage in the one-stage SPNA reactor, the water bath is connected to the interlayer between the inner and outer walls of the anaerobic cometabolic reactor, and the water bath is connected to the interlayer between the inner and outer walls of the one-stage SPNA reactor.

[0006] At present, the removal of organic compounds and denitrification of phenol-containing wastewater mainly rely on biological technology. Traditional biotechnology mainly relies on the nitrification-denitrification process for treatment, which usually requires the addition of additional carbon sources, has high energy consumption, and is difficult to meet the disposal needs of high ammonia nitrogen and low carbon-nitrogen ratio wastewater. Anaerobic ammonia oxidation technology is a new type of biological denitrification technology. It is aimed at the denitrification treatment of wastewater with low carbon-nitrogen ratio and high ammonia nitrogen concentration. It has the advantages of saving aeration energy consumption, no need for external carbon sources, and low residual sludge production. Therefore, the introduction of anaerobic co-substrate metabolic biological processes further increases the degradation rate of difficult-to-degrade substances. At the same time, the coupling of anaerobic ammonia oxidation technology can reduce the treatment cost of semi-coke wastewater, and realize a coal chemical wastewater treatment process with high economic benefits, advanced technology and stable effluent water quality.

[0007] The device of the present application can use the first water inlet pump to pump the wastewater in the water inlet pool into the anaerobic cometabolic reactor. In the anaerobic cometabolic reactor, anaerobic microorganisms are used to degrade pollutants through the cometabolic mechanism, effectively removing difficult-to-degrade pollutants. The second water inlet pump pumps the wastewater treated by the anaerobic cometabolic reactor into the one-stage SPNA reactor, and a short-range nitrification-coupled anaerobic ammonia oxidation process is carried out in the one-stage SPNA reactor to further treat the sewage. The wastewater treated by the one-stage SPNA reactor is discharged into the outlet pool.

[0008] Advantages of this scheme: This scheme introduces the anaerobic co-substrate metabolic biological process and utilizes the effect of anaerobic co-metabolism to reduce the COD influent load, thereby fully utilizing the anaerobic process to remove and transform difficult-to-degrade organic matter, improving the degradation rate of difficult-to-degrade substances and improving the overall anaerobic treatment efficiency; anaerobic ammonia oxidation technology further treats the wastewater. The anaerobic ammonia oxidation process does not require any external carbon source, has low aeration energy consumption, and low residual sludge production, thereby reducing the treatment cost of semi-coke wastewater; the anaerobic co-metabolism reactor decomposes and transforms difficult-to-degrade organic matter before the wastewater enters the one-stage SPNA reactor, thereby improving the biodegradability of the wastewater, reducing the treatment load of the one-stage SPNA reactor, and enhancing the treatment efficiency of the one-stage SPNA reactor, ultimately improving the overall treatment efficiency of coal gasification wastewater, improving biodegradability, and reducing toxicity.

[0009] Preferably, the reactor further comprises a first reflux pump for returning the wastewater from the top of the anaerobic cometabolic reactor to the bottom of the reactor. The first reflux pump is provided to reflux the wastewater in the anaerobic cometabolic reactor, thereby fully contacting the wastewater with the granular sludge in the reactor, increasing the mass transfer process, and achieving the absence of hydraulic dead zones, thereby ensuring good sludge fluidity and stable operation.

[0010] Preferably, the discharge port of the outlet pipe connected to the first reflux pump is tilted and arranged on the anaerobic cometabolic reactor, and the tilt direction of the discharge port of the outlet pipe is adjustable. The discharge port of the outlet pipe is tilted so that the sewage enters the anaerobic cometabolic reactor in a tangential direction, disturbing and stirring the water flow, further ensuring sufficient contact between the sewage and the granular sludge, and reducing the hydraulic dead zone inside the anaerobic cometabolic reactor. At the same time, the tilt direction of the discharge port can be adjusted to change the disturbed flow direction, so that the sewage and the granular sludge are fully in contact.

[0011] Preferably, a second reflux pump is further included, configured to return wastewater from the top of the one-stage SPNA reactor to the bottom of the one-stage SPNA reactor. The second reflux pump is provided to reflux wastewater within the one-stage SPNA reactor, thereby ensuring sufficient contact between wastewater and granular sludge within the one-stage SPNA reactor, enhancing mass transfer, and eliminating hydraulic dead zones within the reactor, thereby ensuring good sludge fluidity and stable operation.

[0012] Preferably, the discharge port of the outlet pipe connected to the second reflux pump is tilted on the one-stage SPNA reactor, and the tilt direction of the outlet pipe is adjustable. The tilted discharge port of the outlet pipe allows the sewage to enter the one-stage SPNA reactor tangentially, disturbing the agitated water flow, further ensuring sufficient contact between the sewage and the granular sludge, and reducing the hydraulic dead zone within the one-stage SPNA reactor. The tilt direction of the discharge port can also be adjusted to change the disturbed flow direction, ensuring sufficient contact between the sewage and the granular sludge.

[0013] Preferably, an aeration pump is further included, wherein the aeration pump is used to aerate the one-stage SPNA reactor. The aeration pump is used to aerate the one-stage SPNA reactor, thereby facilitating the regulation of the dissolved oxygen content in the one-stage SPNA reactor.

[0014] Preferably, the anaerobic cometabolic reactor is provided with a stirrer, which slowly stirs the reactor to eliminate dead zones, allowing the sludge and sewage to fully contact, thereby increasing mass transfer efficiency.

[0015] Preferably, the anaerobic cometabolic reactor is cylindrical.

[0016] Preferably, the communication port between the first water inlet pump and the anaerobic cometabolic reactor is located at the bottom of the anaerobic cometabolic reactor, and the communication port between the second water inlet pump and the anaerobic cometabolic reactor is located at the top of the anaerobic cometabolic reactor.

[0017] Preferably, the device further comprises a water bath inlet pump, which is communicated with the water bath. The water bath inlet pump is used to control water replenishment in the water bath, making it convenient to control and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1It is a structural schematic diagram of an embodiment of the present utility model. DETAILED DESCRIPTION

[0019] The following is further described in detail through specific implementation methods:

[0020] The figure marks in the drawings of the specification include: water inlet tank 1, first water inlet pump 2, water bath tank 3, water bath water inlet pump 4, DO / pH probe 5, anaerobic co-metabolism reactor 6, first reflux pump 7, second water inlet pump 8, water outlet tank 9, one-stage SPNA reactor 10, aeration pump 11, and second reflux pump 12.

[0021] Example:

[0022] In order to improve the performance of biological process for treating blue carbon wastewater, this embodiment provides a new type of high-efficiency biological treatment combined device for blue carbon wastewater, as shown in the attached Figure 1 As shown, it includes: a DO / pH probe 5, a water bath 3, and a water inlet pool 1, a first water inlet pump 2, an anaerobic cometabolism reactor 6, a second water inlet pump 8, a one-stage SPNA reactor 10 and an outlet pool 9 connected in sequence. The first water inlet pump 2 draws wastewater from the water inlet pool 1 into the anaerobic cometabolism reactor 6. In the anaerobic cometabolism reactor 6, anaerobic microorganisms are used to degrade pollutants through a cometabolism mechanism, effectively removing refractory pollutants. The second water inlet pump 8 draws wastewater treated by the anaerobic cometabolism reactor 6 into the one-stage SPNA reactor 10. A short-range nitrification-coupled anaerobic ammonia oxidation process is carried out in the one-stage SPNA reactor 10 to further treat the wastewater. The wastewater treated by the one-stage SPNA reactor 10 is discharged into the outlet pool 9. Before the wastewater enters the one-stage SPNA reactor 10, the anaerobic co-metabolic reactor 6 decomposes and transforms difficult-to-degrade organic matter, improves the biodegradability of the wastewater, reduces the processing load of the one-stage SPNA reactor 10, and enhances the processing efficiency of the one-stage SPNA reactor 10, ultimately improving the overall treatment efficiency of coal gasification wastewater, improving biodegradability, and reducing toxicity.

[0023] Among them, the connection port between the first water inlet pump 2 and the anaerobic cometabolic reactor 6 is located at the bottom of the anaerobic cometabolic reactor 6, the connection port between the second water inlet pump 8 and the anaerobic cometabolic reactor 6 is located at the top of the anaerobic cometabolic reactor 6, and the connection port between the effluent tank 9 and the one-stage SPNA reactor 10 is located at the top of the one-stage SPNA reactor 10. The treated sewage in the anaerobic cometabolic reactor 6 enters the one-stage SPNA reactor 10 through the top overflow, and the treated sewage in the one-stage SPNA reactor 10 enters the effluent tank 9 through the top overflow, reducing the particulate matter carried by the water and improving the effluent quality.

[0024] When adding wastewater to the corresponding reactor, the pH of the inlet water is maintained at 7.5-8.0 by adding a certain amount of NaHCO3.

[0025] The DO / pH probe 5 is used to detect the dissolved oxygen content and pH value of the wastewater in the anaerobic co-metabolism reactor 6. The DO / pH probe 5 is used to detect the dissolved oxygen content and pH value of the wastewater in the one-stage SPNA reactor 10. The DO / pH probe 5 can timely obtain the dissolved oxygen content and pH value of the corresponding wastewater, making it convenient to control the wastewater to ensure the progress of the corresponding reaction.

[0026] The water bath 3 is connected to the inner and outer interlayers of the anaerobic cometabolic reactor 6, and the water bath 3 is connected to the inner and outer interlayers of the one-stage SPNA reactor 10. The water bath 3 is used to control the internal temperature of the anaerobic cometabolic reactor 6 and the one-stage SPNA reactor 10 to be 30±2°C. In this embodiment, the water bath 3 connects the anaerobic cometabolic reactor 6 and the one-stage SPNA reactor 10 in series through a peristaltic pump, so that the temperature in the two reactors is constant at about 32°C. In this embodiment, the water bath 3 is a water bath 3 with a built-in heating device.

[0027] Also comprise water bath water inlet pump 4, water bath water inlet pump 4 is communicated with water bath pool 3. Control to replenish water in water bath pool 3 by water bath water inlet pump 4, convenient to control and use.

[0028] The anaerobic cometabolic reactor 6 is a treatment system that uses anaerobic microorganisms to degrade complex pollutants through a cometabolic mechanism. Its design and operation principle is based on the "cometabolic" phenomenon of microorganisms, that is, in the absence of oxygen, microorganisms metabolize the main substrate (such as an organic nutrient source) while degrading certain pollutants that are difficult to degrade or not directly utilized through non-growth metabolism. The one-stage SPNA reactor 10 (Single-stage Partial Nitritation-Anammox Reactor) is a sewage treatment technology that combines partial nitrification (PN) and anaerobic ammonia oxidation (Anammox) processes in a single reactor. This reactor achieves efficient denitrification through one-stage operation and is mainly used for the treatment of wastewater with high nitrogen content and low carbon-nitrogen ratio (such as landfill leachate, aquaculture wastewater and some industrial wastewater).

[0029] The anaerobic cometabolic reactor 6 and the one-stage SPNA reactor 10 are both made of organic glass, with a total effective volume of 8.0 L. The anaerobic cometabolic reactor 6 uses methanol as an anaerobic cometabolic substrate to degrade organic matter mainly composed of monophenols such as phenol, o-cresol, p-cresol, and o-cresol.

[0030] The anaerobic cometabolic reactor 6 is provided with a stirrer, which slowly stirs the reactor to eliminate dead zones, allowing the sludge and sewage to fully contact, thereby increasing mass transfer efficiency. The anaerobic cometabolic reactor 6 is cylindrical.

[0031] It also includes a first reflux pump 7, which is used to return the sewage from the top of the anaerobic cometabolic reactor 6 to the bottom of the anaerobic cometabolic reactor 6. The first reflux pump 7 is set to reflux the sewage in the anaerobic cometabolic reactor 6, so that the sewage and the granular sludge are fully in contact in the anaerobic cometabolic reactor 6, increase the mass transfer process, and achieve no hydraulic dead zone inside the reactor, so that the sludge has good fluidity and stable operation. The discharge port of the outlet pipe connected to the first reflux pump 7 is tilted and set on the anaerobic cometabolic reactor 6, and the tilt direction of the discharge port of the outlet pipe is adjustable. The discharge port of the outlet pipe is tilted so that the sewage enters along the tangential direction of the anaerobic cometabolic reactor 6, disturbs the stirring water flow, further makes the sewage and the granular sludge fully contact, and reduces the no hydraulic dead zone inside the anaerobic cometabolic reactor 6; at the same time, the tilt direction of the discharge port can be adjusted to change the disturbed flow direction so that the sewage and the granular sludge are fully in contact.

[0032] The system also includes a second reflux pump 12, which is used to return wastewater from the top of the one-stage SPNA reactor 10 to the bottom of the one-stage SPNA reactor 10. The second reflux pump 12 is provided to reflux wastewater within the one-stage SPNA reactor 10, ensuring full contact between the wastewater and the granular sludge within the one-stage SPNA reactor 10, enhancing mass transfer and eliminating hydraulic dead zones within the reactor, thereby ensuring good sludge flow and stable operation. The outlet port of the outlet pipe connected to the second reflux pump 12 is tilted and arranged on the one-stage SPNA reactor 10. The tilt of the outlet port is adjustable. This tilt allows wastewater to enter tangentially of the one-stage SPNA reactor 10, disrupting the agitation water flow and further ensuring full contact between the wastewater and the granular sludge, thereby reducing the hydraulic dead zones within the one-stage SPNA reactor 10. The tilt of the outlet port can also be adjusted to alter the direction of the disturbed flow, ensuring full contact between the wastewater and the granular sludge.

[0033] The first reflux pump 7 and the second reflux pump 12 draw water from the upper part of the corresponding reactor to reflux to realize internal circulation, and both maintain an upward flow rate of 0.5 m / h.

[0034] The apparatus further includes an aeration pump 11 for aerating the one-stage SPNA reactor 10. The aeration pump 11 is used to aerate the one-stage SPNA reactor 10, thereby facilitating the regulation of the amount of dissolved oxygen in the one-stage SPNA reactor 10.

[0035] This scheme introduces the anaerobic co-substrate metabolic biological process and utilizes the effect of anaerobic co-metabolism to reduce the COD (the amount of oxygen required for the oxidation of organic matter in water under the action of strong oxidants such as potassium permanganate or potassium dichromate) inlet load, thereby fully utilizing the anaerobic process to remove and transform difficult-to-degrade organic matter, increasing the degradation rate of difficult-to-degrade substances and improving the overall anaerobic treatment efficiency; the anaerobic ammonia oxidation technology is used to further treat the wastewater. The anaerobic ammonia oxidation process does not require any external carbon source, has low aeration energy consumption, and low residual sludge production, thereby reducing the treatment cost of semi-coke wastewater. Experimental results show that the COD effluent can reach 369 mg / L and NH3-N reaches 22 mg / L.

[0036] This solution also provides a method for using the above device, which specifically includes:

[0037] First: start the anaerobic cometabolic reactor 6 to use methanol as the anaerobic cometabolic substrate to test the degradation capacity of organic matter mainly composed of monophenols such as phenol, o-cresol, p-cresol, and o-cresol;

[0038] In this step, four short-term experiments were conducted, with COD:methanol (COD equivalent) ratios of 1:1, 3:1, 5:1, and 9:1, respectively, to determine the optimal co-metabolite addition ratio. Subsequently, a long-term test was conducted in the anaerobic cometabolism reactor 6 to test effluent quality, evaluate the acute toxicity of the luminescent bacteria, and determine the EC50 value of each pollutant. OD equivalent is a concept used to express the oxygen consumption corresponding to the chemical oxygen demand (COD) of a specific substance (usually a pollutant in wastewater or water). It is often used to estimate the amount of oxygen required by a substance during oxidation. It is a method of comparison and evaluation by converting the mass or concentration of a pollutant into a corresponding COD value.

[0039] In this stage, the anaerobic cometabolic reactor 6 is not aerated and is in a completely anaerobic environment. At the same time, the agitator is slowly stirred to eliminate dead zones in the anaerobic cometabolic reactor 6, allowing the sludge and sewage to fully contact, thereby increasing mass transfer efficiency.

[0040] The wastewater enters the anaerobic co-metabolism reactor 6 through the first water inlet pump 2 in the water inlet pool 1. The COD concentration of the wastewater is 2000 mg / L, and the NH 4+ -N concentration is 70mg / L-100mg / L, and total phenol concentration is 600mg / L.

[0041] Second: The effluent from the anaerobic co-metabolism reactor 6 is used as the inlet of the one-stage SPNA reactor 10. The dissolved oxygen in the one-stage SPNA reactor 10 is controlled in the range of 0.4 mg / L-0.8 mg / L and the pH is between 7.5-8.0 through a time-space switch, gradually starting the short-range nitrification-coupled anaerobic ammonia oxidation process.

[0042] In this step, the startup phase of the one-stage SPNA reactor 10 is divided into three steps. The first step is to cultivate and enrich anaerobic ammonia-oxidizing bacteria. The HRT is first controlled at 24h, and the hydraulic retention time is gradually shortened. When the nitrite nitrogen accumulation rate is stable at more than 90%, the second step experiment is started. The second step is: based on the enrichment in the first stage, the influent gradually becomes the effluent of the anaerobic co-metabolism reactor 6, and the DO, pH, ORP and other values ​​in the reactor are monitored and recorded in real time to determine the optimal coupling operation conditions under different environments.

[0043] Third: while coupling the anaerobic co-metabolic reactor 6 with the one-stage SPNA reactor 10, the HRT is shortened to gradually increase the processing load of the system, and the internal reflux ratio of the two reactors is coordinated to achieve a low-cost and high-efficiency semi-coke wastewater treatment process.

[0044] In this step, the reflux ratio in the anaerobic cometabolic reactor 6 is controlled by the first reflux pump 7 , and the reflux ratio in the one-stage SPNA reactor 10 is controlled by the second reflux pump 12 .

[0045] This solution achieves the removal of difficult-to-degrade organic matter in semi-coke wastewater, reduces the influent load and toxicity reduction for the subsequent integrated anaerobic ammonia oxidation reactor, and the one-stage SPNA reactor 10 reaction device finally achieves the effect of nitrogen reduction and carbon removal for semi-coke wastewater under the conditions of a constant temperature water bath of 32°C and a pH value of 7.2-8.2, as well as cultivation methods at different stages; this device has a simple structure and can use the effect of anaerobic co-metabolism to reduce the COD influent load based on the characteristics of semi-coke wastewater containing a large amount of difficult-to-degrade organic matter, thereby fully utilizing the anaerobic process to remove and transform difficult-to-degrade organic matter and improve the overall anaerobic treatment efficiency.

[0046] The above is only an embodiment of the present invention, and the common knowledge such as the specific technical solutions and / or characteristics in the solution are not described in detail here. It should be pointed out that for those skilled in the art, several variations and improvements can be made without departing from the technical solution of the present invention. In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances. The scope of protection claimed by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A novel and efficient biological treatment combined device for semi-coal wastewater, characterized in that: include: A DO / pH probe, a water bath, and a water inlet tank, a first water inlet pump, an anaerobic cometabolic reactor, a second water inlet pump, a one-stage SPNA reactor and a water outlet tank connected in sequence; the DO / pH probe is used to detect the dissolved oxygen content and pH value of the sewage in the anaerobic cometabolic reactor, the DO / pH probe is used to detect the dissolved oxygen content and pH value of the sewage in the one-stage SPNA reactor, the water bath is connected to the interlayer between the inner and outer walls of the anaerobic cometabolic reactor, and the water bath is connected to the interlayer between the inner and outer walls of the one-stage SPNA reactor.

2. The novel high-efficiency biological treatment combined device for semi-coal wastewater according to claim 1, characterized in that: The device further comprises a first reflux pump, which is used to return the sewage from the top of the anaerobic cometabolic reactor to the bottom of the anaerobic cometabolic reactor.

3. The novel high-efficiency biological treatment combined device for semi-coal wastewater according to claim 2, characterized in that: The discharge port of the outlet pipeline connected to the first reflux pump is tiltedly arranged on the anaerobic cometabolic reactor, and the tilt direction of the discharge port of the outlet pipeline is adjustable.

4. The novel and highly efficient biological treatment device for semi-coal wastewater according to claim 1, characterized in that: It also includes a second reflux pump, which is used to return the sewage from the top of the one-stage SPNA reactor to the bottom of the one-stage SPNA reactor.

5. The novel high-efficiency biological treatment combined device for semi-coal wastewater according to claim 4 is characterized by: The discharge port of the outlet pipeline connected to the second reflux pump is tiltedly arranged on the one-stage SPNA reactor, and the tilt direction of the discharge port of the outlet pipeline is adjustable.

6. The novel high-efficiency biological treatment combined device for semi-coal wastewater according to claim 1, characterized in that: The device also includes an aeration pump, which is used to aerate the one-stage SPNA reactor.

7. The novel high-efficiency biological treatment combined device for semi-coal wastewater according to claim 1 is characterized by: The anaerobic cometabolic reactor is provided with a stirrer.

8. The novel high-efficiency biological treatment combined device for semi-coal wastewater according to claim 1, characterized in that: The anaerobic cometabolic reactor is cylindrical.

9. The novel high-efficiency biological treatment combined device for semi-coal wastewater according to claim 1, characterized in that: The communication port between the first water inlet pump and the anaerobic cometabolic reactor is located at the bottom of the anaerobic cometabolic reactor, and the communication port between the second water inlet pump and the anaerobic cometabolic reactor is located at the top of the anaerobic cometabolic reactor.

10. The novel high-efficiency biological treatment combined device for semi-coal wastewater according to claim 1, characterized in that: It also includes a water bath inlet pump, which is communicated with the water bath.

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