A device for simultaneous treatment of carbon, nitrogen and sulfur wastes from ships based on the synergistic metabolic function of multiple microorganisms

Abstract

The invention discloses a synchronous treatment device for ship carbon, nitrogen and sulfur wastes based on the synergistic metabolic function of multiple microorganisms, including a tank body, the upper part of the tank body is a solid-liquid-gas separation zone, the lower part is a reaction zone, and the reaction zone is an inner and outer sleeve structure; the inside of the reaction zone is a biofilm reaction zone, and the outside is a suspended sludge reaction zone; the lower end of the suspended sludge reaction zone is connected to the lower end of the biofilm reaction zone, and the tops of the biofilm reaction zone and the suspended sludge reaction zone are connected to the solid-liquid-gas separation zone. The solid-liquid-gas separation zone includes a gas collection chamber, a sludge settling chamber and a biogas buffer chamber; the sludge settling chamber is located above the suspended sludge reaction zone and is connected to the suspended sludge reaction zone, the biogas buffer chamber is located above the biofilm reaction zone and is connected to the biofilm reaction zone, the gas collection chamber is located at the top of the tank body and is connected to the tops of the sludge settling chamber and the biogas buffer chamber; an exhaust valve I is provided at the top of the gas collection chamber, and a water outlet is provided on the tank body on one side of the gas collection chamber. The gases generated in the biofilm reaction zone and the suspended sludge reaction zone of the present invention are discharged from the gas collecting chamber of the solid-liquid-gas separation zone through the exhaust valve I, which solves the problem that the structure of the liquid inlet I and the exhaust valve II in the biofilm reaction zone of the existing device affects the reaction efficiency of the device.

Description

Technical Field

[0001] The invention relates to the technical field of wastewater treatment, and in particular to a device for synchronously treating carbon, nitrogen and sulfur wastes on ships based on the synergistic metabolic function of multiple microorganisms. Background Art

[0002] The problem of air pollution caused by ship exhaust emissions has gradually attracted the attention of countries around the world. Ship exhaust pollution mainly comes from sulfur oxides SO contained in diesel engine exhaust. x 、Nitrogen oxides NO x Many countries have set limits on the concentration of pollutants in tail gas emissions and increased emission control requirements. x 、NO x The most commonly used method for treating smoke particles is wet scrubbing, which uses a scrubbing liquid containing alkaline substances to wash the exhaust gas and absorb the SO x and NO x etc., and convert them into sulfite SO3 2- and nitrate NO3 - , correspondingly produced a large amount of SO3 2- The tail gas desulfurization waste liquid and NO3 - The tail gas denitrification waste liquid needs to be further treated to meet the standards before it can be discharged.

[0003] A Chinese patent with authorization announcement number CN111924985B discloses a device for synchronously treating flue gas desulfurization wastewater and denitrification wastewater based on the synergistic action of microorganisms, including a tank body, the upper part of the tank body is a solid-liquid-gas separation zone, and the lower part is a reaction zone; the reaction zone is an inner and outer sleeve structure, the inner part is a suspended sludge reaction zone, and the outer part is a biofilm reaction zone; the lower end of the suspended sludge reaction zone is connected to the lower end of the biofilm reaction zone, and the top of the suspended sludge reaction zone is connected to the solid-liquid-gas separation zone; the tank body is provided with a liquid inlet I, a sampling port I, a sampling port II, a sampling port III, and a sampling port IV from top to bottom, which are connected to the biofilm reaction zone; the sampling port I is connected to the sampling port II through a circulation pipe and a circulation pump; four sludge filling ports are respectively provided on the tank body on the side opposite to the four sampling ports, which are connected to the suspended sludge. The reaction zone is connected; inspection ports are respectively provided on the tank body at the same height as the four sampling ports, which are connected to the biofilm reaction zone; an exhaust valve II is provided on the tank body on the side opposite to the liquid inlet I; a liquid inlet II is provided at the bottom of the tank body, which is connected to the suspended sludge reaction zone; the biofilm reaction zone is filled with five layers of fillers, and a biofilm with sulfate-reducing bacteria as the dominant functional bacteria is gradually generated on each layer of fillers, and a sulfate reduction reaction occurs thereon; a temperature controller probe is inserted into the middle section of the biofilm reaction zone, and the temperature controller probe is connected to the temperature controller; the solid-liquid-gas separation zone includes a gas collecting chamber and a sludge settling chamber; the gas collecting chamber and the sludge settling chamber are located at the top of the tank body and are arranged opposite to each other; an exhaust valve I is provided on the upper part of the gas collecting chamber, and a water outlet is provided on the tank body on one side of the gas collecting chamber; autotrophic desulfurization and denitrification reaction and heterotrophic denitrification reaction occur in the suspended sludge reaction zone. The angle between the side wall of the liquid inlet II and the vertical direction is 20°-30°, and the vertical distance between the bottom end of the side wall of the suspended sludge reaction zone and the side wall of the liquid inlet II is 0.5cm-2.0cm; the angle between the side wall of the gas collecting chamber and the vertical direction is 30°-40°, and the angle between the side wall of the sludge settling chamber and the vertical direction is 30°-40°. The lower end of the side wall of the gas collecting chamber is 0.5cm-2.0cm below the upper end of the side wall of the sludge settling chamber. The upper end of the side wall of the sludge settling chamber is provided with a horizontal baffle connected to the side wall of the tank body. The device is provided with a horizontal baffle connected to the side wall of the tank body, and a relatively closed space is formed at the upper end of the biofilm reaction zone. The liquid inlet I and the exhaust valve II are respectively arranged on both sides of the space. After the washing waste liquid to be treated is passed into the space from the liquid inlet I, it enters the biofilm reaction zone. The gas generated in the biofilm reaction zone enters the space and is discharged from the exhaust valve II. The gas in the area near the liquid inlet I in the space needs to first flow circumferentially between the inner and outer sleeves and gather in the area near the exhaust valve II in the space and then be discharged from the exhaust valve II, which will cause the following problems:

[0004] 1. Since the gas generated in the biofilm reaction zone has different discharge speeds at different circumferential positions, the gas concentration in the area close to the exhaust valve II is greater than the gas concentration in the area close to the liquid inlet I. This makes it easy for the gas to form a local cavity in the biofilm reaction zone, resulting in a reduction in the contact area between the microorganisms and the liquid, thereby reducing the mass transfer rate in the biofilm reaction zone;

[0005] 2. The gas generated in the biofilm reaction zone is exhausted slowly through the exhaust valve II;

[0006] 3. After the washing waste liquid to be treated enters from the liquid inlet I, it is difficult to flow to the side of the exhaust valve II due to the gas pressure, resulting in uneven distribution of the washing waste liquid to be treated along the circumferential direction, thereby affecting the uniformity of the biofilm reaction area in the circumferential position;

[0007] The above problems all directly affect the reaction speed of the biofilm reaction zone. Therefore, the device has the problem that the structure of the liquid inlet I and the exhaust valve II of the biofilm reaction zone affects the reaction efficiency of the device. Summary of the invention

[0008] The present invention provides a device for simultaneously treating carbon, nitrogen and sulfur wastes from ships based on the coordinated metabolic function of multiple microorganisms to solve the above technical problems.

[0009] In order to achieve the above object, the technical solution of the present invention is:

[0010] A device for synchronously treating carbon, nitrogen and sulfur wastes from ships based on the synergistic metabolic function of multiple microorganisms comprises a tank body, the upper part of the tank body is a solid-liquid-gas separation zone, the lower part is a reaction zone, and the reaction zone is an inner and outer sleeve structure; the inside of the reaction zone is a biofilm reaction zone, and the outside is a suspended sludge reaction zone; the lower end of the suspended sludge reaction zone is connected to the lower end of the biofilm reaction zone, and the top ends of the biofilm reaction zone and the suspended sludge reaction zone are connected to the solid-liquid-gas separation zone.

[0011] The solid-liquid-gas separation zone includes a gas collecting chamber, a sludge settling chamber and a biogas buffer chamber; the sludge settling chamber is located above the suspended sludge reaction zone and is connected to the suspended sludge reaction zone, the biogas buffer chamber is located above the biofilm reaction zone and is connected to the biofilm reaction zone, the gas collecting chamber is located at the top of the tank body and is connected to the top of the sludge settling chamber and the top of the biogas buffer chamber; an exhaust valve I is provided on the top of the gas collecting chamber, and a water outlet is provided on the tank body on one side of the gas collecting chamber.

[0012] The tank body is provided with a liquid inlet I, a sampling port I and a sampling port II from top to bottom, and the liquid inlet I, the sampling port I and the sampling port II are connected to the biofilm reaction zone; the tank body is provided with a sampling port III, a sampling port IV and a sampling port V from top to bottom on the side opposite to the liquid inlet I, and the sampling port III, the sampling port IV and the sampling port V are connected to the suspended sludge reaction zone; the tank body is provided with four first inspection ports from top to bottom, and the first inspection ports are connected to the biofilm reaction zone.

[0013] A liquid inlet II is provided at the bottom of the tank body, and the liquid inlet II is connected to the suspended sludge reaction zone; the biofilm reaction zone is filled with fillers, and a biofilm with sulfate-reducing bacteria as the dominant functional bacteria is gradually generated on the fillers, and a sulfate reduction reaction occurs thereon; a temperature controller probe is inserted into the middle section of the biofilm reaction zone, and the temperature controller probe is connected to the temperature controller.

[0014] Autotrophic desulfurization and denitrification reactions and heterotrophic denitrification reactions occur in the suspended sludge reaction zone.

[0015] Furthermore, a first cone is fixed to the top of the inner sleeve of the inner-outer sleeve structure, with the large end of the first cone facing the gas collecting chamber; the inner cavity of the first cone forms a biogas buffer chamber, and the outer wall of the first cone and the outer sleeve wall of the inner-outer sleeve structure form a sludge settling chamber.

[0016] A second cone is fixed on the top of the tank body, with its large end facing the first cone, its lower end located between the first cone and the outer sleeve wall of the inner-outer-sleeve structure, and the inner cavity of the second cone forms a gas collecting chamber.

[0017] Furthermore, the angle between the wall of the first cone and the vertical direction is 30°-40°, the angle between the wall of the second cone and the vertical direction is 45°-60°, and the lower end of the second cone is located 0.5cm-2.0cm vertically below the upper end of the first cone.

[0018] Furthermore, the vertical distance between the central axis of the liquid inlet I and the upper end of the first cone 1 is 5.0cm-10.0cm, and the diameter of the liquid inlet I is 1.0cm-3.0cm; the vertical distance between the central axis of the sampling port I and the upper end of the first cone is 30.0cm-35.0cm; the vertical distance between the central axis of the sampling port II and the upper end of the first cone is 55.0cm-60.0cm.

[0019] Furthermore, the bottom of the outer sleeve of the inner-outer sleeve structure is a conical bottom, the angle between the bottom side wall of the outer sleeve of the inner-outer sleeve structure and the vertical direction is 20°-30°, the liquid inlet II is arranged at the center of the bottom of the outer sleeve of the inner-outer sleeve structure, and the vertical distance between the lower end of the inner sleeve of the inner-outer sleeve structure and the bottom side wall of the outer sleeve of the inner-outer sleeve structure is 0.5cm-2.0cm.

[0020] Furthermore, a sampling port VI is provided on the bottom side wall of the outer sleeve of the inner-outer sleeve structure.

[0021] Furthermore, the vertical distance between the central axis of the sampling port VI and the bottom horizontal line of the liquid inlet II is 8.0 cm-10.0 cm.

[0022] Furthermore, the effective volume ratio of the biofilm reaction zone to the suspended sludge reaction zone is 1:2-1:4, and the height of the solid-liquid-gas separation zone accounts for 20%-30% of the height of the tank body.

[0023] Furthermore, the fillers are, from top to bottom, a ceramic ring filler layer, a polyethylene polyhedral hollow ball filler layer, an activated carbon filler layer, a polyethylene polyhedral hollow ball filler layer and a ceramic ring filler layer, and the layer height ratio of the five filler layers is (1-1.5):1:(1-2.0):1:(1-1.5). The diameter of the ceramic rings in the ceramic ring filler layer is 0.5cm-1.0cm, the diameter of the polyethylene polyhedral hollow ball in the polyethylene polyhedral hollow ball filler layer is 1.0cm-2.0cm, and the activated carbon in the activated carbon filler layer is columnar activated carbon with a cross-sectional diameter of 0.2cm-0.5cm.

[0024] Furthermore, a second inspection port is provided on the top of the tank body, and the second inspection port is located outside the gas collecting chamber.

[0025] Beneficial effects:

[0026] First, the present application discloses a ship carbon, nitrogen and sulfur waste synchronous treatment device based on the synergistic metabolism function of multiple microorganisms, by setting the inside of the reaction zone as a biofilm reaction zone and the outside as a suspended sludge reaction zone, and connecting the tops of the biofilm reaction zone and the suspended sludge reaction zone to the solid-liquid-gas separation zone, so that the gases generated in the biofilm reaction zone and the suspended sludge reaction zone are discharged from the gas collecting chamber of the solid-liquid-gas separation zone through the exhaust valve I. The gas generated in the biofilm reaction zone can freely flow upward into the gas collecting chamber at different circumferential positions, ensuring that the gas discharge speed at different circumferential positions is approximately the same, avoiding the reduction of the contact area between the microorganisms and the waste liquid to be treated due to gas convergence, thereby reducing the mass transfer rate. The speed of the gas increases after passing through the gas collecting chamber, and the speed increases when it is discharged through the exhaust valve I. The gas generated in the biofilm reaction zone enters the gas collecting chamber through the biogas buffer chamber, preventing the gas pressure from hindering the waste liquid to be treated from flowing circumferentially after entering through the liquid inlet I; after the gas enters the gas collecting chamber, the gas partial pressure above the biogas buffer chamber increases, which can hinder the waste liquid to be treated from spreading upward after entering through the liquid inlet I, and promote its downward flow under the action of gravity; the biogas buffer chamber and the gas collecting chamber cooperate to facilitate the circumferential uniform distribution of the waste liquid to be treated in the biofilm reaction zone. In summary, the problem that the structure of the liquid inlet I and the exhaust valve II in the biofilm reaction zone of the existing device affects the reaction efficiency of the device is solved.

[0027] Second, the present application avoids the problem that the small external space of the existing device is not conducive to the filling arrangement, functional bacteria inoculation, inspection and maintenance of the biofilm reaction zone by setting the inside of the reaction zone as a biofilm reaction zone and the outside as a suspended sludge reaction zone. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1 This is a schematic diagram of the structure of a device for simultaneously treating carbon, nitrogen and sulfur wastes from ships based on the cooperative metabolic function of multiple microorganisms disclosed in Example 1 of the present invention;

[0030] Figure 2 A line graph showing changes in total effluent pollutants of a simultaneous treatment device for carbon, nitrogen and sulfur wastes from ships based on the coordinated metabolic function of multiple microorganisms disclosed in Example 1 of the present invention;

[0031] Figure 3 This is a spatial distribution map of functional bacterial genera in a ship carbon, nitrogen and sulfur waste simultaneous treatment device based on the synergistic metabolic function of multiple microorganisms disclosed in Example 1 of the present invention.

[0032] 1. Biofilm reaction zone; 2. Suspended sludge reaction zone; 3. Gas collecting chamber; 4. Sludge settling chamber; 5. Biogas buffer chamber; 6. Exhaust valve I; 7. Water outlet; 8. Liquid inlet I; 9. Sampling port I; 10. Sampling port II; 11. Sampling port III; 12. Sampling port IV; 13. Sampling port V; 14. First inspection port; 15. Liquid inlet II; 16. Temperature controller probe; 17. Temperature controller; 18. First cone; 19. Second cone; 20. Sampling port VI; 21. Ceramic ring packing layer; 22. Polyethylene multi-faceted hollow ball packing layer; 23. Activated carbon packing layer; 24. Second inspection port; 25. Water inlet tank I; 26. Water inlet pump I; 27. Water inlet tank II; 28. Water inlet pump II. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1

[0035] A device for synchronously treating carbon, nitrogen and sulfur wastes from ships based on the synergistic metabolic function of multiple microorganisms, such as Figure 1As shown, it includes a tank body, the upper part of the tank body is a solid-liquid-gas separation zone, and the lower part is a reaction zone, and the reaction zone is an inner and outer sleeve structure; the inside of the reaction zone is a biofilm reaction zone 1, and the outside is a suspended sludge reaction zone 2; the lower end of the suspended sludge reaction zone 2 is connected to the lower end of the biofilm reaction zone 1, and the top ends of the biofilm reaction zone 1 and the suspended sludge reaction zone 2 are connected to the solid-liquid-gas separation zone.

[0036] The solid-liquid-gas separation zone includes a gas collecting chamber 3, a sludge settling chamber 4 and a biogas buffer chamber 5; the sludge settling chamber 4 is located above the suspended sludge reaction zone 2 and is connected to the suspended sludge reaction zone 2, the biogas buffer chamber 5 is located above the biofilm reaction zone 1 and is connected to the biofilm reaction zone 1, the gas collecting chamber 3 is located at the top of the tank body and is connected to the top of the sludge settling chamber 4 and the top of the biogas buffer chamber 5; an exhaust valve I 6 is provided on the upper part of the gas collecting chamber 3, and a water outlet 7 is provided on the tank body on one side of the gas collecting chamber 3.

[0037] The tank body is provided with a liquid inlet I 8, a sampling port I 9 and a sampling port II 10 from top to bottom, and the liquid inlet I8, the sampling port I9 and the sampling port II 10 are connected to the biofilm reaction zone 1; the tank body is provided with a sampling port III 11, a sampling port IV 12 and a sampling port V13 from top to bottom on the side opposite to the liquid inlet I8, and the sampling port III 11, the sampling port IV 12 and the sampling port V13 are connected to the suspended sludge reaction zone 2; four first inspection ports 14 are provided on the tank body from top to bottom, and the first inspection port 14 is connected to the biofilm reaction zone 1.

[0038] A liquid inlet II 15 is provided at the bottom of the tank body, and the liquid inlet II 15 is connected to the biofilm reaction zone 1; the biofilm reaction zone 1 is filled with filler, and a biofilm with sulfate-reducing bacteria as the dominant functional bacteria is gradually generated on the filler, and a sulfate reduction reaction occurs thereon; a temperature controller probe 16 is inserted into the middle section of the biofilm reaction zone 1, and the temperature controller probe 16 is connected to the temperature controller 17.

[0039] The suspended sludge reaction zone 2 undergoes autotrophic desulfurization and denitrification reactions and heterotrophic denitrification reactions.

[0040] The device is provided with the biofilm reaction zone 1 in the inner sleeve, the suspended sludge reaction zone 2 in the outer sleeve, and the tops of the inner and outer sleeves are made open, so that the inner sleeve is connected to the biogas buffer chamber 5, the outer sleeve is connected to the sludge settling chamber 4, and then the biogas buffer chamber 5 and the sludge settling chamber 4 are connected to the gas collecting chamber 3, so that the gas generated by the biofilm reaction zone 1 and the suspended sludge reaction zone 2 is collected by the gas collecting chamber 3 and discharged through the exhaust valve 1 6; in particular, it is convenient for the carbon dioxide generated in the sulfate reduction process and the nitrogen generated in the denitrification process to be discharged in time. The gas generated by the biofilm reaction zone 1 and the suspended sludge reaction zone 2 can freely flow upward into the gas collecting chamber 3 at different circumferential positions, reduce the accumulation of gas at the top of the reaction zone and reduce the resistance of gas flow, ensure that the gas discharge speed at different circumferential positions is approximately the same, avoid gas convergence and generate local cavities in the biofilm reaction zone 1, ensure the contact area between the microorganism and the introduced waste liquid to be treated, and thus ensure the mass transfer rate. And the speed of the gas increases after being collected by the gas collecting chamber 3, which can speed up the speed of the gas discharged by the exhaust valve I 6. In addition, due to the setting of the biogas buffer chamber 5, the gas generated by the biofilm reaction zone 1 no longer stays in the biofilm reaction zone 1, but directly enters the gas collecting chamber 3 after passing through the biogas buffer chamber 5, avoiding the formation of obstructions at the position corresponding to the liquid inlet I 8, so that the waste liquid to be treated can flow smoothly after entering through the liquid inlet I 8; at the same time, after the gas enters the gas collecting chamber 3, the gas partial pressure above the biogas buffer chamber 5 increases, which can hinder the waste liquid to be treated from spreading upward after entering through the liquid inlet I8, and promote the waste liquid to be treated to flow downward under the action of gravity; the gas collecting chamber 3 and the biogas buffer chamber 5 cooperate to facilitate the uniform distribution of the waste liquid to be treated in the circumferential direction in the biofilm reaction zone 1. In summary, the device solves the problem that the liquid inlet and exhaust structures of the biofilm reaction zone of the existing device affect the reaction efficiency of the device.

[0041] The existing device has the problem that it is not convenient to set fillers and inoculate functional bacteria in the biofilm reaction zone because the space of the outer sleeve as the biofilm reaction zone is small. Especially after a long period of operation and use, the existing device has problems such as inconvenient maintenance, difficult to replenish activated sludge, and easy clogging. The present device is convenient for setting fillers and inoculating functional bacteria in the biofilm reaction zone by setting the biofilm reaction zone 1 in the inner sleeve and the suspended sludge reaction zone 2 in the outer sleeve; the lower end opening of the biofilm reaction zone 1 is enlarged to avoid clogging. At the same time, it is also convenient to replenish activated sludge in the outer sleeve and to repair the inner and outer sleeves.

[0042] Preferably, a first cone 18 is fixed to the top of the inner sleeve of the inner-outer sleeve structure, with the large end of the first cone 18 facing the gas collecting chamber 3; the inner cavity of the first cone 18 forms a biogas buffer chamber 5, and the outer wall of the first cone 18 and the outer sleeve wall of the inner-outer sleeve structure form a sludge settling chamber 4.

[0043] A second cone 19 is fixedly provided on the top of the tank body, with the large end of the second cone 19 facing the first cone 18, and the lower end of the second cone 19 is located between the first cone 18 and the cylinder wall of the outer sleeve of the inner-outer sleeve structure, and the inner cavity of the second cone 19 forms a gas collecting chamber 3.

[0044] Preferably, the angle between the wall of the first cone 18 and the vertical direction is 30°-40°, and in this embodiment, it is 30°; the angle between the wall of the second cone 19 and the vertical direction is 45°-60°, and in this embodiment, it is 60°; the lower end of the second cone 19 is located 0.5cm-2.0cm below the upper end of the first cone 18 at a vertical height of 1.5cm in this embodiment. The inclined setting of the wall of the first cone 18 can prevent the suspended sludge in the suspended sludge reaction zone 2 from excessively floating up and entering the inner sleeve, avoiding the loss of suspended sludge, and thus avoiding the loss of suspended sludge affecting the operating efficiency of the device and the mixing of different functional strains causing functional disorders of the device. The lower end of the second cone 19 is located between the first cone 18 and the wall of the outer sleeve of the inner and outer sleeve structure, so that the gas in the reaction process can smoothly enter the gas collecting chamber 3, avoiding the gas driving the suspended sludge to float up and enter the gas collecting chamber 3.

[0045] Preferably, the vertical distance between the central axis of the liquid inlet I 8 and the upper end of the first cone 18 is 5.0cm-10.0cm, and the diameter of the liquid inlet I 8 is 1.0cm-3.0cm. In this embodiment, the vertical distance is 10.0cm and the diameter is 1.0cm; ensuring that a suitable location is selected for maintenance and activated sludge replenishment. The vertical distance between the central axis of the sampling port I 9 and the upper end of the first cone 18 is 30.0cm-35.0cm, and the vertical distance between the central axis of the sampling port II 10 and the upper end of the first cone 18 is 55.0cm-60.0cm, which is used to select biological phases in different areas of the biofilm reaction zone 1.

[0046] Preferably, the bottom of the outer sleeve of the inner-outer sleeve structure is a conical bottom, and the angle between the bottom side wall of the outer sleeve of the inner-outer sleeve structure and the vertical direction is 20°-30°, and is 30° in this embodiment. The liquid inlet II 15 is arranged at the center of the bottom of the outer sleeve of the inner-outer sleeve structure, and the vertical distance between the lower end of the inner sleeve of the inner-outer sleeve structure and the bottom side wall of the outer sleeve of the inner-outer sleeve structure is 0.5cm-2.0cm, and is 1.2cm in this embodiment, so that the biofilm reaction zone 1 and the suspended sludge reaction zone 2 are effectively separated to prevent excessive mixing of the two areas.

[0047] Preferably, a sampling port VI 20 is provided on the bottom side wall of the outer sleeve of the inner-outer sleeve structure for selecting the biological phase at the bottom of the reaction zone.

[0048] Preferably, the vertical distance between the central axis of the sampling port VI 20 and the bottom horizontal line of the liquid inlet II 15 is 8.0 cm-10.0 cm. The uniform arrangement of the sampling ports I 9, II 10, III 11, IV 12, V13 and VI 20 can collect biological phases in different areas of the device and different positions of each area, making the collected samples more representative.

[0049] Preferably, the effective volume ratio of the biofilm reaction zone 1 and the suspended sludge reaction zone 2 is 1:2-1:4. In the present embodiment, the effective volume ratio of the biofilm reaction zone 1 and the suspended sludge reaction zone 2 is 1:4. The height of the solid-liquid-gas separation zone accounts for 20%-30% of the height of the tank body. In the present embodiment, the height of the solid-liquid-gas separation zone accounts for 25% of the height of the tank body.

[0050] Specifically, the first inspection port 14 is disposed on a side of the tank body at 90° on the same horizontal plane as the sampling port III 11 , and the staggered arrangement facilitates inspection and maintenance of the biofilm reaction zone 1 .

[0051] Preferably, the fillers are, from top to bottom, a ceramic ring filler layer 21, a polyethylene polyhedral hollow sphere filler layer 22, an activated carbon filler layer 23, a polyethylene polyhedral hollow sphere filler layer 22, and a ceramic ring filler layer 21, and the layer height ratio of the five filler layers is (1-1.5):1:(1-2.0):1:(1-1.5), the ceramic ring diameter of the ceramic ring filler layer 21 is 0.5cm-1.0cm, the polyethylene polyhedral hollow sphere diameter of the polyethylene polyhedral hollow sphere filler layer 22 is 1.0cm-2.0cm, and the activated carbon of the activated carbon filler layer 23 is a columnar activated carbon with a cross-sectional diameter of 0.2cm-0.5cm. In this embodiment, the layer height ratio of the five filler layers is 1:1:1:1:1, the ceramic ring diameter is 1.0cm, the polyethylene polyhedral hollow sphere diameter is 1.5cm, and the activated carbon is a cross-sectional diameter of 0.5cm.

[0052] Preferably, a second inspection port 24 is provided on the top of the tank body, and the second inspection port 24 is located outside the gas collecting chamber 3. The floating condition of the suspended sludge outside the gas collecting chamber 3 can be checked through the second inspection port 24, which is convenient for maintenance.

[0053] Preferably, the treatment device also includes a water inlet tank I 25, a water inlet pump I 26, a water inlet pipe I, a water inlet tank II 27, a water inlet pump II 28 and a water inlet pipe II; the two ends of the water inlet pipe I are respectively connected to the water inlet tank I 25 and the liquid inlet I 8, and the water inlet pump I 26 is installed on the water inlet pipe I; the two ends of the water inlet pipe II are respectively connected to the water inlet tank II 27 and the liquid inlet II 15, and the water inlet pump II 28 is installed on the water inlet pipe II.

[0054] Example 2

[0055] This embodiment provides a biological coupling removal method for various concentrations of sulfites in ship multi-source wastewater, which uses a ship carbon, nitrogen and sulfur waste synchronous treatment device based on the synergistic metabolism function of multiple microorganisms in Example 1 to treat the ship multi-source wastewater. The removal method includes the following steps:

[0056] S1. The activated sludge with sulfate reduction function is inoculated into the biofilm reaction zone 1 through the first inspection port 14, and the activated sludge with desulfurization and denitrification function is inoculated into the suspended sludge reaction zone 2 through the sampling port III 11, the sampling port IV 12 and the sampling port V13.

[0057] S2. Intermittent water inflow is used to acclimate the activated sludge.

[0058] The tail gas desulfurization waste liquid with organic matter added is introduced into the biofilm reaction zone 1 through the liquid inlet I 8, specifically: the SO3 2- The tail gas desulfurization waste liquid is added to the water inlet tank Ⅰ25, and sufficient organic matter is added to the water inlet tank Ⅰ25 to supplement the organic carbon, so as to simulate the mixing of ship domestic sewage containing a large amount of organic matter and the tail gas desulfurization waste liquid. The waste liquid in the water inlet tank Ⅰ25 is sent to the biofilm reaction zone 1 through the liquid inlet port I8 by using the water inlet pump Ⅰ26 and the water inlet pipe Ⅰ.

[0059] Sulfide S will be added 2- The tail gas denitrification waste liquid is introduced into the suspended sludge reaction zone 2 through the liquid inlet II 15, specifically: the tail gas denitrification waste liquid is added to the water inlet tank II 27, and an appropriate amount of S is added to the water inlet tank II 27. 2- The waste liquid in the water inlet tank II 27 is sent to the suspended sludge reaction zone 2 through the liquid inlet port II 15 by using the water inlet pump II 28 and the water inlet pipe II.

[0060] Contains SO3 2- The tail gas desulfurization waste liquid with organic matter flows through the packing from top to bottom, and the pollutants are degraded into S through sulfate reduction reaction. 2- , carbon dioxide gas and methane gas, and the gases are discharged through the biogas buffer chamber 5 and the gas collecting chamber 3 in turn through the exhaust valve I 6; the liquid flows to the bottom of the biofilm reaction zone 1 and enters the suspended sludge reaction zone 2 through the bottom slit, and mixes with the added S entering through the liquid inlet II 15 2- The tail gas denitrification waste liquid is mixed and flows from bottom to top through the suspended sludge reaction zone 2, which contains NO3 - and S 2- It is converted into nitrogen and elemental sulfur S through desulfurization and denitrification reaction 0, the organic matter is further degraded into carbon dioxide gas and methane gas; carbon dioxide gas, methane gas and nitrogen enter the solid-liquid-gas separation zone together with the mud-water mixture, and the gas is discharged through the sludge settling chamber 4 and the gas collecting chamber 3 in turn via the exhaust valve I 6; the mud in the mud-water mixture slides down along the side wall of the gas collecting chamber 3 and falls into the sludge settling chamber 4, and then slides back to the suspended sludge reaction zone 2 along the side wall of the sludge settling chamber 4, and the S-containing gas after the mud-water separation 0 The supernatant is then discharged through the water outlet 7.

[0061] When SO3 2- When the removal rate reaches more than 90%, the activated sludge in the biofilm reaction zone 1 is fully domesticated; when NO3 - and S 2- When the removal rates of and respectively reach more than 95%, the activated sludge acclimation in the suspended sludge reaction zone 2 is completed.

[0062] S3. After the activated sludge in the biofilm reaction zone 1 and the activated sludge in the suspended sludge reaction zone 2 are acclimated, the intermittent water inflow is changed to continuous water inflow.

[0063] After the exhaust gas desulfurization waste liquid is mixed with domestic sewage, the concentration of organic matter in it is 600-1400 mg / L in terms of C, SO3 2- The concentration of S is 300-700 mg / L; considering that the functional bacteria with sulfate reduction function in the biofilm reaction zone 1 have been successfully domesticated, the S produced by sulfate reduction 2- It can meet the needs of functional bacteria with desulfurization and denitrification functions in the future, and no additional S is added to the tail gas denitrification wastewater. 2- . NO3 in tail gas denitrification wastewater - The concentration of N is 90-150 mg / L, S 2- The concentration is 100-200 mg / L in terms of S, the pH is 7-8, and the temperature is 25-35°C.

[0064] During the intermittent water inflow stage, the hydraulic retention time HRT in the biofilm reaction zone 1 is 18 hours, and the water inflow time each time is 1-2 hours; the hydraulic retention time HRT in the suspended sludge reaction zone 2 is 18 hours, and the water inflow time each time is 1-2 hours.

[0065] During the continuous water inflow stage, the hydraulic retention time HRT in the biofilm reaction zone 1 is 18 h, and the hydraulic retention time HRT in the suspended sludge reaction zone 2 is 18 h.

[0066] In this embodiment, after the tail gas desulfurization waste liquid is mixed with domestic sewage, the concentration of organic matter in it is 580 mg / L in terms of C, SO3 2- The concentration of S is 350-550 mg / L. -The concentration is 150 mg / L in terms of N, the pH value is 8.0, and the temperature is 30°C. During the intermittent water inflow stage, the hydraulic retention time HRT in the biofilm reaction zone 1 and the suspended sludge reaction zone 2 is 18 h, and the water inflow time is 2 h each time.

[0067] Preferably, the activated sludge with sulfate reduction function and the activated sludge with desulfurization and denitrification function are taken from the anaerobic fermentation tank or sludge concentration tank of the sewage treatment plant, or the aerobic activated sludge after anaerobic treatment.

[0068] Preferably, the concentration of inoculated activated sludge is 46-60 gMLVSS / L, the volume of sludge inoculated into the biofilm reaction zone 1 accounts for 1 / 3-1 / 2 of the volume of the reaction zone, and the volume of sludge inoculated into the suspended sludge reaction zone 2 accounts for 1 / 2-4 / 5 of the reaction volume.

[0069] In this embodiment, the concentration of activated sludge inoculated in biofilm reaction zone 1 is 46.8 g MLVSS / L, and the volume of sludge inoculated in biofilm reaction zone 1 accounts for 1 / 2 of the volume of the reaction zone; the concentration of activated sludge inoculated in suspended sludge reaction zone 2 is 44.5 g MLVSS / L. The pH value is adjusted by adding NaHCO3 to the waste liquid. The organic matter added to the tail gas desulfurization waste liquid and the tail gas denitrification waste liquid is peptone.

[0070] In this embodiment, different influent SO3 2- SO3 in wastewater after concentration treatment 2- , S 0 、NO3 - The results of the tests were shown in Table 1. Figure 2 , according to different SO3 2- Concentration division operation stage: A = 350mgS / L; B = 400mgS / L; C = 450mgS / L; D = 500mgS / L; E = 550mgS / L; The whole device has strong anti-impact load capacity during operation, and the treatment effect of various pollutants is good; the initial SO3 2- When the concentration is 450mgS / L, the whole device has the best effect, and the initial SO3 2- Concentrations below or above 450 mgS / / L will cause the device to be sensitive to SO3 2- And the removal effect of TOC decreased.

[0071] like Figure 3As shown, A1, B1, C1, D1, and E1 are activated sludge samples in the biofilm reaction zone, A2, B2, C2, D2, and E2 are activated sludge samples at the junction of the inner and outer zones, and A3, B3, C3, D3, and E3 are activated sludge samples in the suspended sludge reaction zone. The three sulfate-reducing bacteria genera, Thermovirga, Desulfomicrobium, and Dethiosulfovibrio, are the main functional bacteria genera in the biofilm reaction zone; the two desulfurization and denitrification bacteria genera, Sulfurimonas and Sulfurovum, are the main functional bacteria genera in the suspended sludge reaction zone; and the intersection of the inner and outer zones contains a certain number of desulfurization and denitrification bacteria genera such as Sulfurimonas. 2- The increase in concentration will also lead to the production of sulfate-reducing bacteria such as Thermovirga, indicating that the internal and external nested structure successfully achieved the spatial separation of the two main functional bacteria, which is the basis for the stable and efficient operation of the device.

[0072] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A simultaneous treatment device for carbon, nitrogen and sulfur wastes on ships based on the synergistic metabolic function of multiple microorganisms, comprising a tank body, the upper part of the tank body is a solid-liquid-gas separation zone, and the lower part is a reaction zone, and the reaction zone is an inner and outer sleeve structure; characterized in that: The interior of the reaction zone is a biofilm reaction zone (1), and the exterior is a suspended sludge reaction zone (2); the lower end of the suspended sludge reaction zone (2) is connected to the lower end of the biofilm reaction zone (1), and the top ends of the biofilm reaction zone (1) and the suspended sludge reaction zone (2) are connected to the solid-liquid-gas separation zone; The solid-liquid-gas separation zone comprises a gas collecting chamber (3), a sludge settling chamber (4) and a biogas buffer chamber (5); the sludge settling chamber (4) is located above the suspended sludge reaction zone (2) and is connected to the suspended sludge reaction zone (2); the biogas buffer chamber (5) is located above the biofilm reaction zone (1) and is connected to the biofilm reaction zone (1); the gas collecting chamber (3) is located at the top of the tank body and is connected to the top of the sludge settling chamber (4) and the top of the biogas buffer chamber (5); an exhaust valve I (6) is provided at the top of the gas collecting chamber (3); and a water outlet (7) is provided on the tank body on one side of the gas collecting chamber (3); The tank body is provided with a liquid inlet I (8), a sampling port I (9) and a sampling port II (10) in sequence from top to bottom, and the liquid inlet I (8), the sampling port I (9) and the sampling port II (10) are connected to the biofilm reaction zone (1); the tank body is provided with a sampling port III (11), a sampling port IV (12) and a sampling port V (13) in sequence from top to bottom on the side opposite to the liquid inlet I (8), and the sampling port III (11), the sampling port IV (12) and the sampling port V (13) are connected to the suspended sludge reaction zone (2); the tank body is provided with four first inspection ports (14) in sequence from top to bottom, and the first inspection ports (14) are connected to the biofilm reaction zone (1); The bottom of the tank body is provided with a liquid inlet II (15), and the liquid inlet II (15) is connected to the suspended sludge reaction zone (2); the biofilm reaction zone (1) is filled with filler, and a biofilm with sulfate-reducing bacteria as the dominant functional bacteria is gradually generated on the filler, and a sulfate reduction reaction occurs on the filler; a temperature controller probe (16) is inserted into the middle section of the biofilm reaction zone (1), and the temperature controller probe (16) is connected to a temperature controller (17); The suspended sludge reaction zone (2) undergoes autotrophic desulfurization and denitrification reactions and heterotrophic denitrification reactions; A first cone (18) is fixed to the top of the inner sleeve of the inner-outer sleeve structure, and the large end of the first cone (18) faces the gas collecting chamber (3); the inner cavity of the first cone (18) forms the biogas buffer chamber (5), and the outer wall of the first cone (18) and the outer sleeve wall of the inner-outer sleeve structure form the sludge settling chamber (4); A second cone (19) is fixedly provided on the top of the tank body, the large end of the second cone (19) faces the first cone (18), the lower end of the second cone (19) is located between the first cone (18) and the cylinder wall of the outer sleeve of the inner-outer-sleeve structure, and the inner cavity of the second cone (19) forms the gas collecting chamber (3).

2. The device for simultaneous treatment of carbon, nitrogen and sulfur wastes from ships based on the synergistic metabolism of multiple microorganisms according to claim 1 is characterized in that: The angle between the wall of the first cone (18) and the vertical direction is 30°-40°, the angle between the wall of the second cone (19) and the vertical direction is 45°-60°, and the lower end of the second cone (19) is located 0.5 cm-2.0 cm vertically below the upper end of the first cone (18).

3. The device for simultaneous treatment of carbon, nitrogen and sulfur wastes from ships based on the synergistic metabolism of multiple microorganisms according to claim 1 is characterized in that: The vertical distance between the central axis of the liquid inlet I (8) and the upper end of the first cone (18) is 5.0 cm-10.0 cm, and the diameter of the liquid inlet I (8) is 1.0 cm-3.0 cm; The vertical distance between the central axis of the sampling port I (9) and the upper end of the first cone (18) is 30.0 cm-35.0 cm; the vertical distance between the central axis of the sampling port II (10) and the upper end of the first cone (18) is 55.0 cm-60.0 cm.

4. The device for simultaneous treatment of carbon, nitrogen and sulfur wastes from ships based on the synergistic metabolism of multiple microorganisms according to claim 1 is characterized in that: The bottom of the outer sleeve of the inner-outer sleeve structure is a conical bottom, the angle between the bottom side wall of the outer sleeve of the inner-outer sleeve structure and the vertical direction is 20°-30°, the liquid inlet II (15) is arranged at the center of the bottom of the outer sleeve of the inner-outer sleeve structure, and the vertical distance between the lower end of the inner sleeve of the inner-outer sleeve structure and the bottom side wall of the outer sleeve of the inner-outer sleeve structure is 0.5cm-2.0cm.

5. The device for simultaneous treatment of carbon, nitrogen and sulfur wastes from ships based on the synergistic metabolism of multiple microorganisms according to claim 4 is characterized in that: A sampling port VI (20) is arranged on the bottom side wall of the outer sleeve of the inner-outer sleeve structure.

6. The device for simultaneous treatment of carbon, nitrogen and sulfur wastes from ships based on the synergistic metabolism of multiple microorganisms according to claim 5, characterized in that: The vertical distance between the central axis of the sampling port VI (20) and the bottommost horizontal line of the liquid inlet II (15) is 8.0 cm-10.0 cm.

7. The device for simultaneous treatment of carbon, nitrogen and sulfur wastes from ships based on the synergistic metabolism of multiple microorganisms according to claim 1, characterized in that: The effective volume ratio of the biofilm reaction zone (1) to the suspended sludge reaction zone (2) is 1:2-1:4, and the height of the solid-liquid-gas separation zone accounts for 20%-30% of the height of the tank body.

8. The device for simultaneous treatment of carbon, nitrogen and sulfur wastes from ships based on the synergistic metabolism of multiple microorganisms according to claim 1 is characterized in that: The fillers are, from top to bottom, a ceramic ring filler layer (21), a polyethylene polyhedral hollow sphere filler layer (22), an activated carbon filler layer (23), a polyethylene polyhedral hollow sphere filler layer (22) and a ceramic ring filler layer (21), and the layer height ratio of the five filler layers is (1-1.5):1:(1-2.0):1:(1-1.5). The diameter of the ceramic rings of the ceramic ring filler layer (21) is 0.5 cm-1.0 cm, the diameter of the polyethylene polyhedral hollow spheres of the polyethylene polyhedral hollow sphere filler layer (22) is 1.0 cm-2.0 cm, and the cross-sectional diameter of the activated carbon of the activated carbon filler layer (23) is columnar activated carbon of 0.2 cm-0.5 cm.

9. The device for simultaneous treatment of carbon, nitrogen and sulfur wastes from ships based on the synergistic metabolism of multiple microorganisms according to claim 1, characterized in that: The top of the tank body is provided with a second inspection port (24), and the second inspection port (24) is located outside the gas collecting chamber (3).

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