CN112919626B - Sulfur-iron autotrophic denitrification device and reaction control method - Google Patents
Sulfur-iron autotrophic denitrification device and reaction control method Download PDFInfo
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- CN112919626B CN112919626B CN202110079899.0A CN202110079899A CN112919626B CN 112919626 B CN112919626 B CN 112919626B CN 202110079899 A CN202110079899 A CN 202110079899A CN 112919626 B CN112919626 B CN 112919626B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/28—Anaerobic digestion processes
- C02F3/2866—Particular arrangements for anaerobic reactors
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/34—Biological treatment of water, waste water, or sewage characterised by the microorganisms used
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2203/00—Apparatus and plants for the biological treatment of water, waste water or sewage
- C02F2203/006—Apparatus and plants for the biological treatment of water, waste water or sewage details of construction, e.g. specially adapted seals, modules, connections
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/02—Temperature
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F2209/38—Gas flow rate
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Abstract
The invention discloses a sulfur-iron autotrophic denitrification device and a reaction control method, comprising an iron autotrophic denitrification bin and a sulfur autotrophic denitrification bin; a water inlet device is arranged in the iron autotrophic denitrification bin, and the iron autotrophic denitrification bin and the sulfur autotrophic denitrification bin are communicated; an air outlet pipe is arranged at the top of the sulfur autotrophic denitrification bin; the gas outlet pipe is provided with a gas concentration sensor, a gas flow sensor, a signal collector and a signal emitter; a water outlet pipe is arranged at the middle lower part of the sulfur autotrophic denitrification bin; the signal transmitter transmits gas data information to the control platform; also included is a method of controlling the reaction. The nitration device has sufficient reaction and good reaction controllability.
Description
Technical Field
The invention relates to the technical field of biological sewage treatment, in particular to a sulfur-iron autotrophic denitrification device and a reaction control method.
Background
The sulfur-iron autotrophic denitrification technology is used for increasingly obtaining the application of sewage treatment, the two technologies are combined to carry out deep denitrification on sewage in a synergistic mode, the sufficiency of the reaction in the prior art needs to be verified and reasonably proportioned to realize, meanwhile, the reaction control on the later stage of a formed reaction device is less involved, and the temperature and concentration change in the reaction are not accurately controlled.
Disclosure of Invention
The invention aims to solve the technical problem of providing a sulfur-iron autotrophic denitrification device and a reaction control method aiming at the defects in the prior art, wherein the reaction is fully performed through the structural design of the nitrification device, and the reaction of the device is accurately controlled by utilizing the controllable structure of the device, the monitoring of reaction data and the design of an integral monitoring platform.
The technical scheme adopted by the invention for solving the technical problems is as follows: a sulfur-iron autotrophic denitrification device comprises an iron autotrophic denitrification bin and a sulfur autotrophic denitrification bin; a water inlet device is arranged in the iron autotrophic denitrification bin, and the iron autotrophic denitrification bin and the sulfur autotrophic denitrification bin are communicated; an air outlet pipe is arranged at the top of the sulfur autotrophic denitrification bin; the gas outlet pipe is provided with a gas concentration sensor, a gas flow sensor, a signal collector and a signal emitter; a water outlet pipe is arranged at the middle lower part of the sulfur autotrophic denitrification bin; and the signal transmitter transmits the gas data information to the control platform.
The iron autotrophic denitrification bin and the sulfur autotrophic denitrification bin are independently designed, so that the reaction is independently generated and controlled, and meanwhile, the accurate control of the whole reaction material is realized through the monitoring of reaction gas, and the full reaction is ensured.
In a preferred embodiment of the invention, the number of the iron autotrophic denitrification bins is two, and the two iron autotrophic denitrification bins are isolated by a first hollow plate; a sewage inlet pipe and a purified water flushing pipe are arranged at the bottom end of the first hollow plate, and a first water outlet hole is formed in the upper half part of the first hollow plate; the number of the sulfur autotrophic denitrification bins is two, and the two sulfur autotrophic denitrification bins are respectively positioned on one side surface of the two iron autotrophic denitrification bins; the iron autotrophic denitrification bin and the sulfur autotrophic denitrification bin are isolated by a second hollow plate; the bottom of the second hollow plate is provided with a water inlet hole, and the top of the second hollow plate is provided with a second water outlet hole; a screen is arranged on the side wall of the position of the water inlet hole of the second hollow plate; and a space for containing gas is reserved at the top of the sulfur autotrophic denitrification bin, and the gas outlet pipe is communicated with the container.
The iron autotrophic denitrification bin and the sulfur autotrophic denitrification bin are separated into two independent reaction bins through a hollow plate, the hollow plate has a flow space, so that sewage can flow conveniently, and a screen at a water inlet hole can prevent reaction materials from entering the hollow plate; the top of the sulfur autotrophic denitrification bin is provided with a gas containing space, so that a sufficient reaction gas generation space can be ensured, and meanwhile, the subsequent monitoring of the flow and concentration of the gas is facilitated.
In a preferred embodiment of the invention, the upper parts of the iron autotrophic denitrification bin and the sulfur autotrophic denitrification bin are provided with a filling opening, and the bottom parts of the iron autotrophic denitrification bin and the sulfur autotrophic denitrification bin are provided with a conical discharge hopper; a switch door plate is arranged between the conical discharge hopper and the bottom of the iron autotrophic denitrification bin and the sulfur autotrophic denitrification bin.
The control of reaction material can be realized through the door plant that the mouth that packs with have the switch action, ensures that the reaction is abundant, and the design of door plant can prevent reaction material pile up toper play hopper simultaneously to bond when making to unload, be difficult for unloading, have buffer space through the design of door plant and between the play hopper, open back reaction material automatic discharge under the effect of gravity.
According to a preferred embodiment of the invention, the switch door plate comprises a first door plate and a second door plate, the first door plate and the second door plate are respectively opened and closed through a hydraulic cylinder, a piston of the hydraulic cylinder penetrates through the side wall of the conical discharge hopper and is hinged with the door plate, and a cylinder body of the hydraulic cylinder is fixed on the supporting seat.
The hydraulic cylinder can provide larger supporting force and driving force, and the opening and closing reliability of the door plate is ensured; the door plant can be parallel with the lateral wall of toper play hopper when opening, guarantees the smooth and easy of the ejection of compact.
In a preferred embodiment of the present invention, the first door panel open-close end has a first step, the second door panel open-close end has a second step, and the first step and the second step are overlapped to form a flat panel.
The design of step can make the closed closure of door plant good, prevents overflowing of feed liquid.
In a preferred embodiment of the invention, the iron autotrophic denitrification bin is filled with siderite, the sulfur autotrophic denitrification bin is filled with sulfur, and the top of the sulfur autotrophic denitrification bin is provided with a space for containing gas.
The filter material has the function of intercepting suspended pollutants, and can be used as an electron donor to drive the autotrophic denitrifying bacteria attached to the filter material to react to realize denitrification.
In a preferred embodiment of the invention, the volume ratio of the iron autotrophic denitrification bin to the sulfur autotrophic denitrification bin is 1: 2.
The participation degree of the reaction can be controlled by controlling the volume ratio so as to achieve the aim of acid-base balance.
In a preferred embodiment of the invention, the volume of the iron autotrophic denitrification bin and the top of the sulfur autotrophic denitrification bin are provided with temperature sensors, the outer wall disc of the bin is provided with a fluid pipeline, and the fluid pipeline is communicated with a constant temperature device with refrigeration and heating functions; the temperature sensor is connected with the signal collector; and the signal transmitter transmits the temperature data to the control platform.
The activity of denitrifying bacteria can be kept at proper temperature, the temperature monitoring of the control platform and the design of the constant temperature device can ensure the stable reaction temperature of the bin body, and the full play of the reaction is promoted.
In a preferred embodiment of the present invention, a pH sensor is disposed at the water outlet pipe.
The conditions of the reaction materials in the two reaction bins can be known through the observation of the pH value, so that the reasonable adjustment is carried out.
The invention also comprises a reaction control method of the sulfur-iron autotrophic denitrification device, which comprises the following steps:
1) introducing sewage into the first hollow plate, wherein the sewage flows into the iron autotrophic denitrification bin through a first water outlet at the upper part of the first hollow plate;
2) the liquid after the denitrification reaction and the reaction gas rise to a second water outlet at the top through a water inlet at the bottom and flow into the sulfur autotrophic denitrification bin;
3) after the reaction of the sulfur autotrophic denitrification bin, discharging liquid through a water outlet pipe, and discharging reaction gas through an exhaust pipe at the top;
4) the control platform receives the gas flow and gas concentration data, judges according to the gas data, and judges that the pipeline is blocked and needs to be cleaned if the gas concentration is greater than or equal to a threshold value and the gas flow is lower than the threshold value; if the gas concentration is greater than or equal to the threshold value and the gas flow is greater than or equal to the threshold value, the reaction is sufficient; if the gas flow and the gas concentration are both smaller than the threshold value, the reaction is insufficient, and filling or material replacement is required;
5) judging according to the pH value, if the pH value is acidic, replacing part of the iron ore; if the pH value is alkaline, partial sulfur needs to be replaced; if the pH value is neutral, the material does not need to be changed;
6) the control platform receives the temperature data, and if the temperature is greater than a threshold value, the cooling liquid is conveyed through the constant temperature device; if the temperature is lower than the threshold value, the cooling liquid is heated by a heater of the constant temperature device; if the temperature is equal to the threshold value, the constant temperature device does not work;
7) when the material of the part needs to be supplemented, the hydraulic cylinder controls the door panel to be opened at a certain angle, and the door panel is closed after a part of the material is unloaded, and new material is supplemented; when the materials need to be replaced, the hydraulic cylinder controls the door plate to be completely opened, and the reacted materials are discharged through the conical discharging hopper;
8) and opening a valve of the water purification flushing pipe after discharging the materials, flushing the pipeline and the reaction bin with purified water, and refilling after the pipelines and the reaction bin are flushed completely to perform next reaction circulation.
The invention has the following beneficial effects:
1. the iron autotrophic denitrification bin and the sulfur autotrophic denitrification bin are independently designed, so that the reaction is independently generated and controlled, and meanwhile, the accurate control of the whole reaction material is realized through the monitoring of reaction gas, and the full reaction is ensured.
2. The iron autotrophic denitrification bin and the sulfur autotrophic denitrification bin are separated into two independent reaction bins through a hollow plate, the hollow plate has a flow space, so that sewage can flow conveniently, and a screen at a water inlet hole can prevent reaction materials from entering the hollow plate; the top of the sulfur autotrophic denitrification bin is provided with a gas containing space, so that a sufficient reaction gas generation space can be ensured, and meanwhile, the subsequent monitoring of the flow and concentration of the gas is facilitated.
3. The control of reaction material can be realized through the door plant that the mouth that packs with have the switch action, ensures that the reaction is abundant, and the design of door plant can prevent reaction material pile up toper play hopper simultaneously to bond when making to unload, be difficult for unloading, have buffer space through the design of door plant and between the play hopper, open back reaction material automatic discharge under the effect of gravity.
4. The hydraulic cylinder can provide larger supporting force and driving force, and the opening and closing reliability of the door plate is ensured; the door plant can be parallel with the lateral wall of toper play hopper when opening, guarantees the smooth and easy of the ejection of compact.
5. The design of door plant step can make the closed closure of door plant good, prevents overflowing of feed liquid.
6. The filter material has the function of intercepting suspended pollutants, and can be used as an electron donor to drive the autotrophic denitrifying bacteria attached to the filter material to react to realize denitrification.
7. The participation degree of the reaction can be controlled by controlling the volume ratio so as to achieve the aim of acid-base balance.
8. The activity of denitrifying bacteria can be kept at proper temperature, the temperature monitoring of the control platform and the design of the constant temperature device can ensure the stable reaction temperature of the bin body, and the full play of the reaction is promoted.
9. The conditions of the reaction materials in the two reaction bins can be known through the observation of the pH value, so that the reasonable adjustment is carried out.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a left side view of the construction of the conical discharge hopper of the present invention;
description of reference numerals:
1-a first hollow slab; 2-an iron autotrophic denitrification bin; 3-a sulfur autotrophic denitrification bin; 4-a second hollow slab; 5-water inlet holes; 6-a second water outlet; 7-an exhaust pipe; 8-a gas flow sensor; 9-water outlet pipe; 10-a conical discharge hopper; 11-a sewage inlet pipe; 12-a purified water flushing pipe; 13-a first door panel; 14-a second door panel; 15-hydraulic cylinders; 16-a discharge hole; 17-supporting the base.
Detailed Description
The following description of the embodiments of the present invention refers to the accompanying drawings and examples:
example one
Fig. 1-2 show an embodiment of the invention, a sulfur-iron autotrophic denitrification device, comprising an iron autotrophic denitrification bin 2 and a sulfur autotrophic denitrification bin 3; a water inlet device is arranged in the iron autotrophic denitrification bin 2, and the iron autotrophic denitrification bin 2 is communicated with the sulfur autotrophic denitrification bin 3; an air outlet pipe 7 is arranged at the top of the sulfur autotrophic denitrification bin 3; a gas concentration sensor, a gas flow sensor 8, a signal collector and a signal emitter are arranged on the gas outlet pipe 7; a water outlet pipe 9 is arranged at the middle lower part of the sulfur autotrophic denitrification bin 3; and the signal transmitter transmits the gas data information to the control platform.
The iron autotrophic denitrification bin and the sulfur autotrophic denitrification bin are independently designed, so that the reaction is independently generated and controlled, and meanwhile, the accurate control of the whole reaction material is realized through the monitoring of reaction gas, and the full reaction is ensured.
Specifically, the number of the iron autotrophic denitrification bins is two, and the two iron autotrophic denitrification bins 2 are separated by a first hollow plate 1; a sewage inlet pipe 11 and a purified water flushing pipe 12 are arranged at the bottom end of the first hollow plate 1, and a first water outlet (a plurality of water outlets are shown in the figure) is formed in the upper half part of the first hollow plate 1; the number of the sulfur autotrophic denitrification bins 3 is two, and the two sulfur autotrophic denitrification bins are respectively positioned on one side surface of the two iron autotrophic denitrification bins 2; the iron autotrophic denitrification bin 2 and the sulfur autotrophic denitrification bin 3 are isolated by a second hollow plate 4; the bottom of the second hollow plate 4 is provided with a plurality of water inlet holes 5 (shown in the figure), and the top of the second hollow plate is provided with a plurality of second water outlet holes 6 (shown in the figure); a screen (not shown in the figure) is arranged on the side wall of the position of the water inlet hole 4 of the second hollow plate 4; a space for containing gas (see figure 1) is reserved at the top of the sulfur autotrophic denitrification bin 3, and an air outlet pipe 7 is communicated with the space.
The iron autotrophic denitrification bin and the sulfur autotrophic denitrification bin are separated into two independent reaction bins through a hollow plate, the hollow plate has a flow space, so that sewage can flow conveniently, and a screen at a water inlet hole can prevent reaction materials from entering the hollow plate; the top of the sulfur autotrophic denitrification bin is provided with a gas containing space, so that a sufficient reaction gas generation space can be ensured, and meanwhile, the subsequent monitoring of the flow and concentration of the gas is facilitated.
Specifically, the iron autotrophic denitrification bin 2 and the sulfur autotrophic denitrification bin 3 are provided with a filling opening (not shown in the figure) at the upper part and a conical discharge hopper 10 at the bottom; a switch door plate is arranged between the conical discharge hopper 10 and the bottom of the iron autotrophic denitrification bin 2 and the sulfur autotrophic denitrification bin 3.
The control of reaction material can be realized through the door plant that the mouth that packs with have the switch action, ensures that the reaction is abundant, and the design of door plant can prevent reaction material pile up toper play hopper simultaneously to bond when making to unload, be difficult for unloading, have buffer space through the design of door plant and between the play hopper, open back reaction material automatic discharge under the effect of gravity.
Specifically, referring to fig. 2, the opening and closing door panel includes a first door panel 13 and a second door panel 14, the first door panel 13 and the second door panel 14 are respectively opened and closed by a hydraulic cylinder 15, a piston of the hydraulic cylinder 15 penetrates through a side wall of the conical discharge hopper 10 and is hinged to the door panels, and a cylinder body of the hydraulic cylinder 15 is fixed on a support seat 17. Wherein the bottom of the conical discharging hopper 10 is provided with a discharging hole 16.
The hydraulic cylinder can provide larger supporting force and driving force, and the opening and closing reliability of the door plate is ensured; the door plant can be parallel with the lateral wall of toper play hopper when opening, guarantees the smooth and easy of the ejection of compact.
Specifically, referring to fig. 2, the first door panel 13 has a first step at the opening and closing end, and the second door panel 14 has a second step at the opening and closing end, and the first step and the second step are overlapped to form a flat panel.
The design of step can make the closed closure of door plant good, prevents overflowing of feed liquid.
Specifically, the iron autotrophic denitrification bin is filled with siderite, the sulfur autotrophic denitrification bin is filled with sulfur, and a space for containing gas is reserved at the top of the sulfur autotrophic denitrification bin.
The filter material has the function of intercepting suspended pollutants, and can be used as an electron donor to drive the autotrophic denitrifying bacteria attached to the filter material to react to realize denitrification.
Specifically, the volume ratio of the iron autotrophic denitrification bin 2 to the sulfur autotrophic denitrification bin 3 is 1: 2.
The participation degree of the reaction can be controlled by controlling the volume ratio so as to achieve the aim of acid-base balance.
Specifically, the volume of the iron autotrophic denitrification bin 2 and the top of the sulfur autotrophic denitrification bin 3 are provided with temperature sensors, and the outer wall disc of the bin is provided with a fluid pipeline (not shown in the figure) which is communicated with a constant temperature device with refrigeration and heating functions; the temperature sensor is connected with the signal collector; and the signal transmitter transmits the temperature data to the control platform.
The activity of denitrifying bacteria can be kept at proper temperature, the temperature monitoring of the control platform and the design of the constant temperature device can ensure the stable reaction temperature of the bin body, and the full play of the reaction is promoted.
Specifically, a pH value sensor is arranged at the water outlet pipe.
The conditions of the reaction materials in the two reaction bins can be known through the observation of the pH value, so that the reasonable adjustment is carried out.
Example two
A reaction control method of a sulfur-iron autotrophic denitrification device comprises the following steps:
1) introducing sewage into the first hollow plate, wherein the sewage flows into the iron autotrophic denitrification bin through a first water outlet at the upper part of the first hollow plate;
2) the liquid after the denitrification reaction and the reaction gas rise to a second water outlet at the top through a water inlet at the bottom and flow into the sulfur autotrophic denitrification bin;
3) after the reaction of the sulfur autotrophic denitrification bin, discharging liquid through a water outlet pipe, and discharging reaction gas through an exhaust pipe at the top;
4) the control platform receives the gas flow and gas concentration data, judges according to the gas data, and judges that the pipeline is blocked and needs to be cleaned if the gas concentration is greater than or equal to a threshold value and the gas flow is lower than the threshold value; if the gas concentration is greater than or equal to the threshold value and the gas flow is greater than or equal to the threshold value, the reaction is sufficient; if the gas flow and the gas concentration are both smaller than the threshold value, the reaction is insufficient, and filling or material replacement is required;
5) judging according to the pH value, if the pH value is acidic, replacing part of the iron ore; if the pH value is alkaline, partial sulfur needs to be replaced; if the pH value is neutral, the material does not need to be changed;
6) the control platform receives the temperature data, and if the temperature is greater than a threshold value, the cooling liquid is conveyed through the constant temperature device; if the temperature is lower than the threshold value, the cooling liquid is heated by a heater of the constant temperature device; if the temperature is equal to the threshold value, the constant temperature device does not work;
7) when the material of the part needs to be supplemented, the hydraulic cylinder controls the door panel to be opened at a certain angle, and the door panel is closed after a part of the material is unloaded, and new material is supplemented; when the materials need to be replaced, the hydraulic cylinder controls the door plate to be completely opened, and the reacted materials are discharged through the conical discharging hopper;
8) and opening a valve of the water purification flushing pipe after discharging the materials, flushing the pipeline and the reaction bin with purified water, and refilling after the pipelines and the reaction bin are flushed completely to perform next reaction circulation.
Although the preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present invention.
Many other changes and modifications can be made without departing from the spirit and scope of the invention. It is to be understood that the invention is not to be limited to the specific embodiments, but only by the scope of the appended claims.
Claims (9)
1. A sulphur iron autotrophic denitrification device is characterized in that: comprises an iron autotrophic denitrification bin and a sulfur autotrophic denitrification bin; a water inlet device is arranged in the iron autotrophic denitrification bin, and the iron autotrophic denitrification bin and the sulfur autotrophic denitrification bin are communicated; an air outlet pipe is arranged at the top of the sulfur autotrophic denitrification bin; the gas outlet pipe is provided with a gas concentration sensor, a gas flow sensor, a signal collector and a signal emitter; a water outlet pipe is arranged at the middle lower part of the sulfur autotrophic denitrification bin; the signal transmitter transmits gas data information to the control platform;
the number of the iron autotrophic denitrification bins is two, and the two iron autotrophic denitrification bins are isolated by a first hollow plate; a sewage inlet pipe and a purified water flushing pipe are arranged at the bottom end of the first hollow plate, and a first water outlet hole is formed in the upper half part of the first hollow plate; the number of the sulfur autotrophic denitrification bins is two, and the two sulfur autotrophic denitrification bins are respectively positioned on one side surface of the two iron autotrophic denitrification bins; the iron autotrophic denitrification bin and the sulfur autotrophic denitrification bin are isolated by a second hollow plate; the bottom of the second hollow plate is provided with a water inlet hole, and the top of the second hollow plate is provided with a second water outlet hole; a screen is arranged on the side wall of the position of the water inlet hole of the second hollow plate; and a space for containing gas is reserved at the top of the sulfur autotrophic denitrification bin, and the gas outlet pipe is communicated with the space.
2. The sulfur-iron autotrophic denitrification device according to claim 1, wherein: the upper parts of the iron autotrophic denitrification bin and the sulfur autotrophic denitrification bin are provided with a filling opening, and the bottom parts of the iron autotrophic denitrification bin and the sulfur autotrophic denitrification bin are provided with a conical discharge hopper; a switch door plate is arranged between the conical discharge hopper and the bottom of the iron autotrophic denitrification bin and the sulfur autotrophic denitrification bin.
3. The sulfur-iron autotrophic denitrification device according to claim 2, wherein: the switch door plate comprises a first door plate and a second door plate, the first door plate and the second door plate are opened and closed through hydraulic cylinders respectively, pistons of the hydraulic cylinders penetrate through the side walls of the conical discharge hoppers and are hinged with the door plates, and cylinder bodies of the hydraulic cylinders are fixed on the supporting seats.
4. The sulfur-iron autotrophic denitrification device according to claim 3, wherein: the first door plate opening and closing end is provided with a first step, the second door plate opening and closing end is provided with a second step, and the first step and the second step are lapped to form a plane plate.
5. The sulfur-iron autotrophic denitrification device according to claim 2, wherein: the iron autotrophic denitrification bin is filled with siderite, the sulfur autotrophic denitrification bin is filled with sulfur, and a space for containing gas is reserved at the top of the sulfur autotrophic denitrification bin.
6. The sulfur-iron autotrophic denitrification device according to claim 5, wherein: the volume ratio of the iron autotrophic denitrification bin to the sulfur autotrophic denitrification bin is 1: 2.
7. The sulfur-iron autotrophic denitrification device according to claim 5, wherein: the volume of the iron autotrophic denitrification bin and the top of the sulfur autotrophic denitrification bin are provided with temperature sensors, the outer wall disc of the bin is provided with a fluid pipeline, and the fluid pipeline is communicated with a constant temperature device with refrigeration and heating functions; the temperature sensor is connected with the signal collector; and the signal transmitter transmits the temperature data to the control platform.
8. The sulfur-iron autotrophic denitrification device according to claim 7, wherein: and a pH value sensor is arranged at the water outlet pipe.
9. A reaction control method of the pyrite autotrophic denitrification device according to any one of claims 1 to 8, characterized in that: comprises the following steps:
1) introducing sewage into the first hollow plate, wherein the sewage flows into the iron autotrophic denitrification bin through a first water outlet at the upper part of the first hollow plate;
2) the liquid after the denitrification reaction and the reaction gas rise to a second water outlet at the top through a water inlet at the bottom and flow into the sulfur autotrophic denitrification bin;
3) after the reaction of the sulfur autotrophic denitrification bin, discharging liquid through a water outlet pipe, and discharging reaction gas through an exhaust pipe at the top;
4) the control platform receives the gas flow and gas concentration data, judges according to the gas data, and judges that the pipeline is blocked and needs to be cleaned if the gas concentration is greater than or equal to a threshold value and the gas flow is lower than the threshold value; if the gas concentration is greater than or equal to the threshold value and the gas flow is greater than or equal to the threshold value, the reaction is sufficient; if the gas flow and the gas concentration are both smaller than the threshold value, the reaction is insufficient, and filling or material replacement is required;
5) judging according to the pH value, if the pH value is acidic, replacing part of the iron ore; if the pH value is alkaline, partial sulfur needs to be replaced; if the pH value is neutral, the material does not need to be changed;
6) the control platform receives the temperature data, and if the temperature is greater than a threshold value, the cooling liquid is conveyed through the constant temperature device; if the temperature is lower than the threshold value, the cooling liquid is heated by a heater of the constant temperature device; if the temperature is equal to the threshold value, the constant temperature device does not work;
7) when the material of the part needs to be supplemented, the hydraulic cylinder controls the door panel to be opened at a certain angle, and the door panel is closed after a part of the material is unloaded, and new material is supplemented; when the materials need to be replaced, the hydraulic cylinder controls the door plate to be completely opened, and the reacted materials are discharged through the conical discharging hopper;
8) and opening a valve of the water purification flushing pipe after discharging the materials, flushing the pipeline and the reaction bin with purified water, and refilling after the pipelines and the reaction bin are flushed completely to perform next reaction circulation.
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| CN110615534A (en) * | 2019-10-30 | 2019-12-27 | 江南大学 | Sulfur-iron autotrophic denitrification device and application thereof |
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| WO2018107740A1 (en) * | 2016-12-14 | 2018-06-21 | 江南大学 | Wastewater nitrogen and phosphorus removal device and application thereof |
| CN112194245A (en) * | 2020-09-10 | 2021-01-08 | 科盛环保科技股份有限公司 | Autotrophic denitrification deep-bed filter tank using pyrite as filler and quick start method |
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