CN211141810U - Sewage advanced treatment system of low energy consumption - Google Patents
Sewage advanced treatment system of low energy consumption Download PDFInfo
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- CN211141810U CN211141810U CN201921726198.6U CN201921726198U CN211141810U CN 211141810 U CN211141810 U CN 211141810U CN 201921726198 U CN201921726198 U CN 201921726198U CN 211141810 U CN211141810 U CN 211141810U
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Abstract
The utility model relates to the technical field of sewage treatment, in particular to a sewage advanced treatment system with low energy consumption, which comprises an adjusting device, a biochemical device, a coagulation device, a disinfection device, a sludge treatment device and a fan room; the adjusting device performs alkaline washing, acid washing and neutralization reaction on the sewage; the biochemical device carries out synchronous nitrification and denitrification treatment on the liquid prepared by the adjusting device, and the coagulation device carries out coagulation sedimentation disinfection on the liquid prepared by denitrification treatment of the biochemical device through a flocculating agent; the sludge treatment device carries out drying separation on the sludge prepared by the adjusting device. Through reforming transform the pipeline in fan room, reform transform into the fan pipeline that originally only is arranged in the air stripping tower and can also supply biochemical device and sludge treatment device to use, still provide the heat to sludge treatment device based on pneumatic heating's principle except that carrying out the air feed deodorization, reduce whole energy consumption.
Description
Technical Field
The utility model relates to a sewage treatment technical field, concretely relates to is a sewage deep treatment system of low energy consumption.
Background
Along with the development of urban scale, the discharge amount of sewage is increasing day by day, the sewage contains a large amount of nitrogen-containing compounds and sludge such as insoluble substances, different treatment modes are required to be used for different products generated in the advanced sewage treatment, for example, landfill treatment is mostly adopted for the sludge, precious land resources are greatly wasted, tail gas generated after cleaning needs to be discharged after meeting the standard through alkali washing and acid washing, biochemical treatment, coagulation and disinfection treatment are required for the generated waste water besides the adjustment of the pH value, and the waste water can be discharged after meeting the discharge standard.
Chinese patent publication No. CN204097275U discloses a high efficiency treatment system for waste leachate, which treats waste leachate by anaerobic, aerobic and photocatalytic oxidation techniques to remove ammonia nitrogen and refractory organics and improve biodegradability of the leachate, and only treats waste gas and waste water in the case of waste water such as waste leachate, but does not treat the generated sludge, and thus cannot achieve advanced treatment.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to handle to the waste water and the waste gas that produce in the current sewage treatment system mostly, not handle the mud that produces, can't realize advanced treatment's problem, provide a sewage advanced treatment system of low energy consumption.
The adopted technical scheme is that the low-energy-consumption sewage advanced treatment system comprises a regulating device, a biochemical device, a coagulation device, a disinfection device, a sludge treatment device and a fan room; the adjusting device is respectively communicated with the biochemical device, the fan room and the sludge treatment device, the adjusting device performs alkaline washing, acid washing and neutralization reaction on the sewage, the generated gas is discharged after reaching the standard, the generated sludge is conveyed to the sludge treatment device through a pipeline, and the generated liquid is conveyed to a living device through a pipeline; the biochemical device is communicated with the coagulation device and the fan room, the biochemical device carries out synchronous nitrification and denitrification treatment on the liquid prepared by the adjusting device, and the treated liquid is conveyed to the coagulation device through a pipeline; the coagulation device is connected with the disinfection device, coagulates and precipitates the liquid prepared by denitrification treatment of the biochemical device through a flocculating agent, and conveys the precipitated liquid to the disinfection device through a pipeline; the disinfection device disinfects the liquid precipitated by the coagulation device, and the disinfected liquid is discharged after reaching the standard; the sludge treatment device is communicated with the fan room, and is used for drying and separating the sludge prepared by the adjusting device, and discharging the sludge after the sludge treatment reaches the standard; the fan room is communicated with the adjusting device, the sludge treatment device and the biochemical device through pipelines.
Furthermore, the adjusting device comprises an alkali washing tank, a blow-off tower, an acid washing tower, an acid neutralization tank and a separating mechanism, wherein the blow-off tower is respectively communicated with the alkali washing tank, a fan room, the acid washing tower and the acid neutralization tank, and the separating mechanism is communicated with the acid neutralization tank, the sludge treatment device and the biochemical device.
Optionally, the sludge treatment device comprises a sludge treatment device body, the bottom of the sludge treatment device body is connected with a supporting seat, an upper sealing cover is arranged at the top of the sludge treatment device body, a discharge port at the bottom of the sludge treatment device body is connected with a discharge pipe, a feeding box is arranged on the side wall of the sludge treatment device body, and an exhaust port at the upper part of the sludge treatment device body is connected with an exhaust pipe; the feeding box is communicated with the sludge treatment device body, a feeding hole of the feeding box is connected with the feeding pipe, and an air inlet of the feeding box is connected with one end of the air delivery pipe; the other end of the air delivery pipe is connected with the air outlet end of the air ejector, the air inlet end of the air ejector is communicated with the heating air pipe, and the other air outlet end of the air ejector is communicated with one end of the air inlet main pipe; the heating air pipe is communicated with the air storage tank, the other end of the air inlet main pipe is inserted into the sludge treatment device body and is communicated with one end of a heating structure arranged at the lower part of the sludge treatment device body, and the other end of the heating structure is communicated with an air outlet main pipe inserted into the sludge treatment device body.
Optionally, the heating structure comprises more than two heating pipes arranged from top to bottom, the air inlet main pipe is connected with the heating structure through an air inlet branch pipe, terminals with the number being opposite to the number of the heating pipes are arranged on the air inlet branch pipe, each terminal is connected with one end of each heating pipe, the air outlet main pipe is connected with the heating structure through an air outlet branch pipe, terminals with the number being opposite to the number of the heating pipes are arranged on the air outlet branch pipe, and each terminal is connected with one end of each heating pipe.
Further, the heating structure comprises a first heating pipe and a second heating pipe, the first heating pipe is located above the second heating pipe, two ends of the first heating pipe and two ends of the second heating pipe are respectively communicated with the air inlet branch pipe and the air outlet branch pipe, the first heating pipe and the second heating pipe are bent to form a snake-shaped structure, pipe bodies of the first heating pipe and the second heating pipe are not in contact with the inner wall of the sludge treatment device body, and the bending directions of the first heating pipe and the second heating pipe are opposite.
Optionally, an ash bucket is arranged at the bottom of the sludge treatment device body, and a sewage outlet of the sludge treatment device body is positioned on the ash bucket.
Optionally, the biochemical device comprises a primary denitrification treatment device and a secondary denitrification treatment device, a main gas supply pipe and a main gas exhaust pipe are arranged above the primary denitrification treatment device and the secondary denitrification treatment device, a liquid outlet of the primary denitrification treatment device is communicated with a liquid inlet of the secondary denitrification treatment device through a connecting pipe, and a sewage outlet of the secondary denitrification treatment device is communicated with a sewage inlet of the primary denitrification treatment device through a return pipe; the gas supply main pipe supplies gas to the primary denitrification treatment device and the secondary denitrification treatment device, and nitrogen gas after reaction in the primary denitrification treatment device and the secondary denitrification treatment device is discharged from the exhaust main pipe.
Further, a first facultative chamber and a first aeration cavity are arranged in the primary denitrification treatment device, and a first partition plate is arranged between the first facultative chamber and the first aeration cavity; the liquid inlet of the primary denitrification treatment device is positioned at one side close to the first facultative cavity and is communicated with the liquid inlet pipe, and the liquid outlet of the primary denitrification treatment device is positioned at one side close to the first aeration cavity and is communicated with the connecting pipe; a second facultative cavity, a second aeration cavity and a sedimentation cavity are arranged in the secondary denitrification treatment device, the second aeration cavity is positioned between the second facultative cavity and the sedimentation cavity, a second partition plate is arranged between the second aeration cavity and the second facultative cavity, and a third partition plate is arranged between the second aeration cavity and the sedimentation cavity; a liquid inlet of the secondary denitrification treatment device is positioned at one side close to the second facultative cavity and is communicated with the connecting pipe, and a liquid outlet of the secondary denitrification treatment device is positioned at one side close to the sedimentation cavity and is communicated with the liquid outlet pipe; the first partition plate is provided with a first perforation which is communicated with the first facultative cavity and the first aeration cavity, the lower part of the first partition plate is connected with the inner wall of the primary denitrification treatment device, and a gap is formed between the upper part of the first partition plate and the top of the primary denitrification treatment device; the second partition plate is provided with a second perforation which is communicated with the second facultative cavity and the second aeration cavity, the lower part of the second partition plate is connected with the inner wall of the secondary denitrification treatment device, and a gap is formed between the upper part of the second partition plate and the top of the secondary denitrification treatment device; a third perforation which is communicated with the second aeration cavity and the sedimentation cavity is arranged on the third partition plate, the lower part of the third partition plate is connected with the inner wall of the secondary denitrification treatment device, and a gap is formed between the upper part of the third partition plate and the top of the secondary denitrification treatment device; the first through hole, the second through hole and the third through hole are inclined upwards along the flowing direction of liquid in the primary denitrification treatment device and the secondary denitrification treatment device, the inner wall of the first facultative anaerobic cavity is provided with a first biological filler, and the inner wall of the second facultative anaerobic cavity is provided with a second biological filler.
Optionally, the gas supply main is provided with a first gas supply branch pipe, a second gas supply branch pipe, a third gas supply branch pipe and a fourth gas supply branch pipe, the first gas supply branch pipe passes through the top of the primary denitrification treatment device and is inserted into the first facultative oxygen chamber, the second gas supply branch pipe is inserted from the side wall of the primary denitrification treatment device and is communicated with a first gas distribution device arranged at the bottom of the first aeration chamber, the third gas supply branch pipe passes through the top of the secondary denitrification treatment device and is inserted into the second facultative oxygen chamber, and the fourth gas supply branch pipe is inserted from the side wall of the secondary denitrification treatment device and is communicated with a second gas distribution device arranged at the bottom of the second aeration chamber; the exhaust main pipe is provided with a first exhaust branch pipe and a second exhaust branch pipe, one end of the first exhaust branch pipe is communicated with the primary denitrification treatment device, and one end of the second exhaust branch pipe is communicated with the secondary denitrification treatment device; the liquid outlet pipe is provided with a first power pump, the connecting pipe is provided with a second power pump, and the return pipe is provided with a third power pump.
Further, the fan room comprises a gas storage tank and a fan, the gas storage tank is communicated with the heating air pipe, the gas supply main pipe and the air blowing-off pipe respectively, the top of the gas storage tank is connected with a pressure stabilizing air pipe, and the gas inlet of the gas storage tank is communicated with the fan through a pipeline.
The utility model has the advantages that at least one of the following advantages is included;
1. through reforming transform the pipeline in fan room, reform transform into the fan pipeline that originally only is arranged in the air stripping tower and can also supply biochemical device and sludge treatment device to use, still provide the heat to sludge treatment device based on pneumatic heating's principle except that carrying out the air feed deodorization, reduce whole energy consumption.
2. The biochemical device is a synchronous nitrification and denitrification treatment system consisting of a primary denitrification treatment device and a secondary denitrification treatment device, sewage is subjected to synchronous nitrification and denitrification treatment in the primary denitrification treatment device and then is conveyed to the secondary denitrification treatment device for synchronous nitrification and denitrification treatment again, and finally the content of the whole nitrogen-containing compounds in the liquid discharged from the liquid discharge pipe is greatly reduced.
3. And a part of precipitated sludge flows back to the primary denitrification treatment device through a return pipe at a sewage discharge outlet of the secondary denitrification treatment device, and the precipitate which is not subjected to denitrification is subjected to cyclic denitrification again, so that the content of the whole nitrogen-containing compounds in the liquid discharged by the liquid discharge pipe is greatly reduced.
4. The side wall of the sludge treatment device body in the sludge treatment device is provided with the feeding box, sludge to be dried is guided into the feeding box from the feeding pipe, and meanwhile, sludge is smashed into fine particles by high-speed airflow guided into the feeding box from the air inlet, so that the drying and separating time is shortened.
5. The problem of among the current sewage treatment system mostly handle to the waste water and the waste gas that produce, do not handle the mud that produces, can't realize advanced treatment is solved.
Drawings
FIG. 1 is a schematic flow diagram of a low-energy-consumption sewage advanced treatment system;
FIG. 2 is a schematic flow diagram of the conditioning apparatus;
FIG. 3 is a schematic view of the structure of a sludge treatment apparatus;
FIG. 4 is a schematic side view of the sludge treatment apparatus;
FIG. 5 is a schematic view of the structure of the biochemical device;
FIG. 6 is a schematic top view of the apparatus;
FIG. 7 is a schematic view of a fan house structure;
labeled as: 1 is a sludge treatment device body, 2 is an upper sealing cover, 3 is an ash bucket, 4 is a feeding box, 5 is an air ejector, 6 is a supporting seat, 7 is a heating air pipe, 8 is an air conveying pipe, 9 is an air inlet main pipe, 10 is an air outlet main pipe, 11 is a feeding pipe, 12 is an air exhaust pipe, 13 is a discharge pipe, 14 is an air inlet branch pipe, 15 is an air outlet branch pipe, 16 is a first heating pipe, 17 is a second heating pipe, 18 is a primary denitrification treatment device, 19 is a secondary denitrification treatment device, 20 is an air inlet pipe, 21 is an air supply main pipe, 22 is an air exhaust main pipe, 23 is an air outlet pipe, 24 is a first power pump, 25 is a first facultative oxygen cavity, 26 is a first clapboard, 27 is a first aeration cavity, 28 is a first air distribution device, 29 is a connecting pipe, 30 is a first biological filler, 31 is a second biological filler, 32 is a second facultative oxygen cavity, 33 is a second clapboard, 34 is a second aeration cavity, 35 is a second air cavity, 36 is a third clapboard, 37 is a sedimentation chamber, 38 is a first branch air supply pipe, 39 is a first branch air exhaust pipe, 40 is a second branch air supply pipe, 41 is a third branch air supply pipe, 42 is a second branch air exhaust pipe, 43 is a fourth branch air supply pipe, 44 is a second power pump, 45 is a return pipe, 46 is a first perforation, 47 is a second perforation, 48 is a third perforation, 49 is a third power pump, 50 is an air blowing and removing pipe, 51 is an air storage tank, 52 is a pressure stabilizing air pipe, and 53 is a fan.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the scope of the invention.
As shown in figures 1 and 2, a low-energy-consumption sewage advanced treatment system comprises a regulating device, a biochemical device, a coagulation device, a disinfection device, a sludge treatment device and a fan room; the adjusting device is respectively communicated with the biochemical device, the fan room and the sludge treatment device, the adjusting device performs alkaline washing, acid washing and neutralization reaction on the sewage, the generated gas is discharged after reaching the standard, the generated sludge is conveyed to the sludge treatment device through a pipeline, and the generated liquid is conveyed to a living device through a pipeline; the biochemical device is communicated with the coagulation device and the fan room, the biochemical device carries out synchronous nitrification and denitrification treatment on the liquid prepared by the adjusting device, and the treated liquid is conveyed to the coagulation device through a pipeline; the coagulation device is connected with the disinfection device, coagulates and precipitates the liquid prepared by denitrification treatment of the biochemical device through a flocculating agent, and conveys the precipitated liquid to the disinfection device through a pipeline; the disinfection device disinfects the liquid precipitated by the coagulation device, and the disinfected liquid is discharged after reaching the standard; the sludge treatment device is communicated with the fan room, and is used for drying and separating the sludge prepared by the adjusting device, and discharging the sludge after the sludge treatment reaches the standard; the fan room is communicated with the adjusting device, the sludge treatment device and the biochemical device through pipelines.
In the use, through reforming transform the pipeline to the fan room, reform transform the fan pipeline that originally only is arranged in the air stripping tower into can also supplying biochemical device and sludge treatment device to use, still provide the heat to sludge treatment device based on pneumatic heating's principle except that carrying out the air feed deodorization, reduce whole energy consumption.
The flocculating agent used in the coagulation device and the disinfectant used in the disinfection device are all common reagents in the field, and the specific type and the dosage can be selected and used by a person skilled in the art according to the actual situation.
In this embodiment, the adjusting device includes an alkali washing tank, a stripping tower, an acid washing tower, an acid neutralization tank, and a separating mechanism, the stripping tower is respectively communicated with the alkali washing tank, the fan room, the acid washing tower, and the acid neutralization tank, and the separating mechanism is communicated with the acid neutralization tank, the sludge treatment device, and the biochemical device.
During use, sewage firstly enters an alkali washing tank for alkali washing, then the washed liquid is pumped into a stripping tower through a power pump, gas introduced from a fan room reversely blows and drenches the liquid in the stripping tower, high ammonia nitrogen in the liquid is thoroughly reacted for many times to generate ammonia gas and is stripped, the ammonia gas enters an acid washing tower for neutralization reaction to meet the standard requirement and then is discharged, alkaline liquid generated in the stripping tower is pumped into an acid neutralization tank for neutralization through the power pump and then is conveyed to a separation mechanism, the separation mechanism can be a sedimentation tank, and generated tail water and sludge are respectively conveyed to a biochemical device and a sludge treatment device.
As shown in fig. 3 and 4, the sludge treatment device comprises a sludge treatment device body 1, a supporting seat 6 is connected to the bottom of the sludge treatment device body 1, an upper sealing cover 2 is arranged on the top of the sludge treatment device body 1, a discharge port at the bottom of the sludge treatment device body 1 is connected with a discharge pipe 13, a feeding box 4 is arranged on the side wall of the sludge treatment device body 1, and an exhaust port at the upper part of the sludge treatment device body 1 is connected with an exhaust pipe 12; the feeding box 4 is communicated with the sludge treatment device body 1, a feeding hole of the feeding box 4 is connected with a feeding pipe 11, and an air inlet of the feeding box 4 is connected with one end of an air conveying pipe 8; the other end of the air delivery pipe 8 is connected with the air outlet end of the air ejector 5, the air inlet end of the air ejector 5 is communicated with the heating air pipe 7, and the other air outlet end of the air ejector 5 is communicated with one end of the air inlet main pipe 9; the heating air pipe 7 is communicated with the air storage tank 51, the other end of the air inlet main pipe 9 is inserted into the sludge treatment device body 1 and is communicated with one end of a heating structure arranged at the lower part of the sludge treatment device body 1, and the other end of the heating structure is communicated with the air outlet main pipe 10 inserted into the sludge treatment device body 1. Heating structure comprises the heating pipe of arranging about more than two according to, and the air inlet is responsible for 9 and is connected with heating structure through air inlet branch pipe 14, is provided with the number on the air inlet branch pipe 14 and heats the terminal that the root number is relative of pipe, and every terminal all is connected with the one end of heating pipe, and the air-out is responsible for 10 and is connected with heating structure through air outlet branch pipe 15, is provided with the number on the air outlet branch pipe 15 and heats the terminal that the root number is relative of pipe, and every terminal all is connected with the one end of heating pipe. The heating structure comprises a first heating pipe 16 and a second heating pipe 17, the first heating pipe 16 is located above the second heating pipe 17, two ends of the first heating pipe 16 and the second heating pipe 17 are respectively communicated with the air inlet branch pipe 14 and the air outlet branch pipe 15, the first heating pipe 16 and the second heating pipe 17 are bent to form a snake-shaped structure, pipe bodies of the first heating pipe 16 and the second heating pipe 17 are not in contact with the inner wall of the sludge treatment device body 1, and the bending directions of the first heating pipe 16 and the second heating pipe 17 are opposite. The bottom of the sludge treatment device body 1 is provided with an ash bucket 3, and a sewage outlet of the sludge treatment device body 1 is positioned on the ash bucket 3.
In the use, through set up the feed box at sludge treatment device body lateral wall, the mud that will treat the mummification is leading-in from the inlet pipe, and the high-speed air current leading-in from the air intake breaks mud and makes it become tiny granule simultaneously for the mummification separation time. Through setting up heating structure in sludge treatment device body bottom, heating structure is responsible for through the air inlet and is communicate with the air injector simultaneously, and the high-speed air current produces heat energy and heats this internal mud of sludge treatment device in the air inlet is responsible for based on the principle of pneumatic heating, and is more environmental protection than the heating rod, and the energy consumption is lower. The problem of current sludge treatment equipment carry out the mummification based on the mode that the heating rod in the mummification casing heats, whole energy consumption is higher, and the heating region mainly concentrates on near the heating rod, and the mummification time is longer is solved.
Sludge needs to carry out mechanical pre-dehydration earlier before getting into the processing apparatus body, takes off most water in the sludge, and the wind of simultaneously follow the input of heating tuber pipe is hot-blast, gets into defeated tuber pipe and air inlet main pipe respectively after the pressurization through air injector, and the gas that gets into defeated tuber pipe is finally followed the blast pipe and is discharged, and the gas that gets into the air inlet main pipe is responsible for the discharge from the air-out, and sludge after the mummification is discharged from the bottom drain.
Meanwhile, the feed inlet of the feed box 4 is vertical to the air inlet.
The design is favorable to the mud that gets into and contacts with high-speed air current like this, improves high-speed air current and smashes mud and makes it become the efficiency of tiny granule.
The heating structure consisting of the upper heating pipe and the lower heating pipe is adopted, and a gap exists between the first heating pipe and the second heating pipe, so that the contact area between sludge in the sludge treatment device body and the heating pipes can be increased, and the drying separation time is shortened.
In use, the heating pipe can increase the area of the heating pipe in the sludge treatment device body by adopting a snake-shaped structure, so that high-speed airflow in various directions flows in the sludge treatment device body, and the drying separation efficiency is improved.
As shown in fig. 5 and fig. 6, the biochemical device comprises a primary denitrification treatment device 18 and a secondary denitrification treatment device 19, a gas supply main pipe 21 and a gas exhaust main pipe 22 are arranged above the primary denitrification treatment device 18 and the secondary denitrification treatment device 19, a liquid outlet of the primary denitrification treatment device 18 is communicated with a liquid inlet of the secondary denitrification treatment device 19 through a connecting pipe 29, and a sewage outlet of the secondary denitrification treatment device 19 is communicated with a sewage inlet of the primary denitrification treatment device 18 through a return pipe 45; the gas supply header pipe 21 supplies gas to the primary denitrification treatment device 18 and the secondary denitrification treatment device 19, and nitrogen gas after reaction in the primary denitrification treatment device 18 and the secondary denitrification treatment device 19 is discharged from the gas discharge header pipe 22. A first facultative cavity 25 and a first aeration cavity 27 are arranged inside the primary denitrification treatment device 18, and a first clapboard 26 is arranged between the first facultative cavity 25 and the first aeration cavity 27; the liquid inlet of the primary denitrification treatment device 18 is positioned at one side close to the first facultative cavity 25 and is communicated with the liquid inlet pipe 20, and the liquid outlet of the primary denitrification treatment device 18 is positioned at one side close to the first aeration cavity 27 and is communicated with the connecting pipe 29; a second facultative cavity 32, a second aeration cavity 35 and a sedimentation cavity 37 are arranged inside the secondary denitrification treatment device 19, the second aeration cavity 35 is positioned between the second facultative cavity 32 and the sedimentation cavity 37, a second partition plate 31 is arranged between the second aeration cavity 35 and the second facultative cavity 32, and a third partition plate 36 is arranged between the second aeration cavity 35 and the sedimentation cavity 37; a liquid inlet of the secondary denitrification device 19 is positioned at one side close to the second facultative cavity 32 and is communicated with the connecting pipe 29, and a liquid outlet of the secondary denitrification device 19 is positioned at one side close to the sedimentation cavity 37 and is communicated with the liquid outlet pipe 23; the first clapboard 26 is provided with a first perforation 56 which is communicated with the first facultative cavity 25 and the first aeration cavity 27, the lower part of the first clapboard 26 is connected with the inner wall of the primary denitrification treatment device 18, and a gap is arranged between the upper part of the first clapboard 26 and the top of the primary denitrification treatment device 18; the second clapboard 33 is provided with a second perforation 47 which is communicated with the second facultative cavity 32 and the second aeration cavity 35, the lower part of the second clapboard 33 is connected with the inner wall of the secondary denitrification treatment device 19, and a gap is arranged between the upper part of the second clapboard 33 and the top of the secondary denitrification treatment device 19; the third partition plate 36 is provided with a third perforation 48 which is communicated with the second aeration cavity 35 and the sedimentation cavity 37, the lower part of the third partition plate 36 is connected with the inner wall of the secondary denitrification treatment device 19, and a gap is formed between the upper part of the third partition plate 36 and the top of the secondary denitrification treatment device 19; the first perforation 46, the second perforation 47 and the third perforation 48 are inclined upwards along the flowing direction of the liquid in the primary denitrification treatment device 18 and the secondary denitrification treatment device 19, the inner wall of the first facultative chamber 25 is provided with the first biological filler 30, and the inner wall of the second facultative chamber 32 is provided with the second biological filler 31. The air supply main pipe 21 is provided with a first air supply branch pipe 38, a second air supply branch pipe 40, a third air supply branch pipe 41 and a fourth air supply branch pipe 43, the first air supply branch pipe 38 passes through the top of the primary denitrification treatment device 18 and is inserted into the first facultative anaerobic chamber 25, the second air supply branch pipe 40 is inserted from the side wall of the primary denitrification treatment device 18 and is communicated with a first air distribution device 28 arranged at the bottom of the first aeration chamber 27, the third air supply branch pipe 41 passes through the top of the secondary denitrification treatment device 19 and is inserted into the second facultative anaerobic chamber 32, the fourth air supply branch pipe 43 is inserted from the side wall of the secondary denitrification treatment device 19 and is communicated with a second air distribution device 34 arranged at the bottom of the second aeration chamber 20; the exhaust manifold 22 is provided with a first exhaust branch pipe 39 and a second exhaust branch pipe 42, one end of the first exhaust branch pipe 39 is communicated with the primary denitrification treatment device 18, and one end of the second exhaust branch pipe 42 is communicated with the secondary denitrification treatment device 19; the liquid outlet pipe 23 is provided with a first power pump 24, the connecting pipe 29 is provided with a second power pump 44, and the return pipe 45 is provided with a third power pump 49.
In use, by arranging the synchronous nitrification and denitrification treatment system consisting of the primary denitrification treatment device and the secondary denitrification treatment device, sewage is firstly subjected to synchronous nitrification and denitrification treatment in the primary denitrification treatment device and then is conveyed to the secondary denitrification treatment device for synchronous nitrification and denitrification treatment again, and finally the content of the whole nitrogen-containing compounds in the liquid discharged from the liquid discharge pipe is greatly reduced. And a part of precipitated sludge flows back to the primary denitrification treatment device through a return pipe at a sewage discharge outlet of the secondary denitrification treatment device, and the precipitate which is not subjected to denitrification is subjected to cyclic denitrification again, so that the content of the whole nitrogen-containing compounds in the liquid discharged by the liquid discharge pipe is greatly reduced. Meanwhile, nitrification reflux is cancelled, and energy consumption during aeration is reduced. The problems that the existing synchronous nitrification and denitrification device has a nitrification reflux structure, the energy consumption is high during aeration treatment, and the denitrification effect is not ideal by adopting a single-stage denitrification system are solved.
Sewage firstly enters a first facultative chamber in the primary denitrification treatment device from the liquid inlet pipe, synchronous nitrification and denitrification are carried out, then the sewage enters a first aeration chamber from a first partition plate for denitrification again, then the sewage is guided into the secondary denitrification treatment device through a connecting pipe, the sewage is treated by the facultative chamber and the aeration chamber again, and finally the sewage is precipitated in a precipitation chamber, the precipitated sludge flows back to the first facultative chamber through a return pipe from a sewage discharge outlet, liquid is discharged from a liquid outlet pipe, the sewage two-stage denitrification treatment device containing nitrogen compounds comprises the facultative chamber and the aeration chamber, an aerobic zone and an anaerobic zone exist in the facultative zone at the same time, the liquid in the facultative zone is driven to flow and provide sufficient carbon source along with the injection of the sewage from the liquid inlet pipe, and the smooth denitrification is facilitated.
All be provided with the perforation on three baffles, and the perforation sets up respectively on the upper portion of baffle, the sewage that gets into from the feed liquor pipe fills up first facultative anaerobic chamber earlier, then passes into first aeration chamber from the perforation in, because the mode that the perforation set up is for all inclining upwards along the liquid flow direction in one-level denitrification processing apparatus and the second grade denitrification processing apparatus, consequently be close to the fenestrate open-ended height of facultative anaerobic chamber one side and be less than and be close to the fenestrate open-ended height of aeration chamber one side, thereby the bubble that the aeration chamber produced can't pass from the perforation and influence synchronous nitrification-denitrification reaction in the facultative anaerobic chamber. Meanwhile, because the three clapboards and the denitrification treatment device have gaps, nitrogen generated by synchronous nitrification and denitrification can be directly gathered at the upper part of the denitrification treatment device and is led out from the exhaust main pipe, and the nitrogen is used for balancing the air pressure in the denitrification treatment device.
The gas supply main is used for supplying gas to the primary denitrification treatment device and the secondary denitrification treatment device through the first gas supply branch pipe, the second gas supply branch pipe, the third gas supply branch pipe and the fourth gas supply branch pipe respectively, wherein the first gas supply branch pipe is inserted into the first facultative anaerobic cavity, only a certain amount of oxygen-containing areas can be generated in one area, other areas cannot obtain enough oxygen and are anaerobic or anaerobic areas, therefore, an aerobic area and an anaerobic area exist in the facultative anaerobic area, and the following two nitrogen-containing compounds are subjected to synchronous nitrification and denitrification reaction respectively:
NH4 +→NO3 -and NO3 -→N2；
Along with the sewage is injected from the liquid inlet pipe to drive the liquid in the facultative anaerobic zone to flow and provide sufficient carbon source, the denitrification is favorably and smoothly carried out. The biological filler is mainly particulate matter convenient for enrichment of nitrobacteria so as to convert nitrogen-containing compounds by utilizing the nitrobacteria, and is mainly arranged in the facultative zone.
As shown in fig. 7, the fan room comprises an air storage tank 51 and a fan 53, the air storage tank 51 is respectively communicated with the heating air pipe 7, the air supply main pipe 21 and the air stripping pipe 50, the top of the air storage tank 51 is connected with a pressure stabilizing air pipe 52, and the air inlet of the air storage tank 51 is communicated with the fan 53 through a pipeline.
Through reforming transform the pipeline in fan room, reform transform into the fan pipeline that originally only is arranged in the air stripping tower and can also supply biochemical device and sludge treatment device to use, still provide the heat to sludge treatment device based on pneumatic heating's principle except that carrying out the air feed deodorization, reduce whole energy consumption.
Claims (10)
1. The utility model provides a sewage advanced treatment system of low energy consumption which characterized in that: comprises a regulating device, a biochemical device, a coagulation device, a disinfection device, a sludge treatment device and a fan room;
the adjusting device is respectively communicated with the biochemical device, the fan room and the sludge treatment device, the adjusting device performs alkaline washing, acid washing and neutralization reaction on the sewage, the generated gas is discharged after reaching the standard, the generated sludge is conveyed to the sludge treatment device through a pipeline, and the generated liquid is conveyed to a living device through a pipeline;
the biochemical device is communicated with the coagulation device and the fan room, the biochemical device carries out synchronous nitrification and denitrification treatment on the liquid prepared by the adjusting device, and the treated liquid is conveyed to the coagulation device through a pipeline;
the coagulation device is connected with the disinfection device, the coagulation device coagulates and precipitates the liquid prepared by denitrification treatment of the biochemical device through a flocculating agent, and the precipitated liquid is conveyed to the disinfection device through a pipeline;
the disinfection device disinfects the liquid precipitated by the coagulation device, and the disinfected liquid is discharged after reaching the standard;
the sludge treatment device is communicated with the fan room, and is used for drying and separating the sludge prepared by the adjusting device, and discharging the sludge after the sludge treatment reaches the standard;
the fan room is communicated with the adjusting device, the sludge treatment device and the biochemical device through pipelines.
2. The low-energy-consumption advanced wastewater treatment system as claimed in claim 1, wherein: the adjusting device comprises an alkali washing tank, a stripping tower, an acid washing tower, an acid neutralization tank and a separating mechanism, wherein the stripping tower is respectively communicated with the alkali washing tank, a fan room, the acid washing tower and the acid neutralization tank, and the separating mechanism is communicated with the acid neutralization tank, a sludge treatment device and a biochemical device.
3. The low-energy-consumption advanced wastewater treatment system as claimed in claim 2, wherein: the sludge treatment device comprises a sludge drying device body (1), the bottom of the sludge drying device body (1) is connected with a supporting seat (6), an upper sealing cover (2) is arranged at the top of the sludge drying device body (1), a discharge port at the bottom of the sludge drying device body (1) is connected with a discharge pipe (13), a feeding box (4) is arranged on the side wall of the sludge drying device body (1), and an exhaust port at the upper part of the sludge drying device body (1) is connected with an exhaust pipe (12); the feeding box (4) is communicated with the sludge drying device body (1), a feeding hole of the feeding box (4) is connected with the feeding pipe (11), and an air inlet of the feeding box (4) is connected with one end of the air conveying pipe (8); the other end of the air delivery pipe (8) is connected with the air outlet end of the air ejector (5), the air inlet end of the air ejector (5) is communicated with the heating air pipe (7), and the other air outlet end of the air ejector (5) is communicated with one end of the air inlet main pipe (9); heating tuber pipe (7) and gas holder (51) intercommunication, the air inlet is responsible for (9) the other end and inserts sludge drying device body (1) and the heating structure one end intercommunication of locating sludge drying device body (1) lower part, the heating structure other end is responsible for (10) intercommunication with the air-out that inserts sludge drying device body (1).
4. The low-energy-consumption advanced wastewater treatment system according to claim 3, characterized in that: heating structure comprises the heating pipe of arranging about more than two according to, the air inlet is responsible for (9) and is connected with heating structure through air inlet branch pipe (14), is provided with the terminal that number and heating pipe radical are relative on air inlet branch pipe (14), and every terminal all is connected with the one end of heating pipe, the air-out is responsible for (10) and is connected with heating structure through air outlet branch pipe (15), is provided with the terminal that number and heating pipe radical are relative on air outlet branch pipe (15), and every terminal all is connected with the one end of heating pipe.
5. The low-energy-consumption advanced wastewater treatment system according to claim 4, characterized in that: heating structure includes first heating pipe (16) and second heating pipe (17), first heating pipe (16) are located the top of second heating pipe (17), and the both ends of first heating pipe (16) and second heating pipe (17) are equallyd divide respectively with the intercommunication of air inlet branch pipe (14) and air-out branch pipe (15), and first heating pipe (16) and second heating pipe (17) are equal crooked and are snakelike structure, the pipe shaft of first heating pipe (16) and second heating pipe (17) all not with sludge drying device body (1) inner wall contact, the crooked opposite direction of first heating pipe (16) and second heating pipe (17).
6. The low-energy-consumption advanced wastewater treatment system as claimed in claim 5, wherein: the sludge drying device is characterized in that an ash bucket (3) is arranged at the bottom of the sludge drying device body (1), and a sewage discharge outlet of the sludge drying device body (1) is positioned on the ash bucket (3).
7. The low-energy-consumption advanced wastewater treatment system as claimed in claim 6, wherein: the biochemical device comprises a primary denitrification treatment device (18) and a secondary denitrification treatment device (19), a gas supply main pipe (21) and a gas exhaust main pipe (22) are arranged above the primary denitrification treatment device (18) and the secondary denitrification treatment device (19), a liquid outlet of the primary denitrification treatment device (18) is communicated with a liquid inlet of the secondary denitrification treatment device (19) through a connecting pipe (29), and a sewage discharge outlet of the secondary denitrification treatment device (19) is communicated with a sewage inlet of the primary denitrification treatment device (18) through a return pipe (45); the gas supply main pipe (21) supplies gas to the primary denitrification treatment device (18) and the secondary denitrification treatment device (19), and nitrogen gas after reaction in the primary denitrification treatment device (18) and the secondary denitrification treatment device (19) is discharged from the exhaust main pipe (22).
8. The low-energy-consumption advanced wastewater treatment system according to claim 7, characterized in that: a first facultative cavity (25) and a first aeration cavity (27) are arranged in the primary denitrification treatment device (18), and a first clapboard (26) is arranged between the first facultative cavity (25) and the first aeration cavity (27); a liquid inlet of the primary denitrification treatment device (18) is positioned at one side close to the first facultative cavity (25) and is communicated with a liquid inlet pipe (20), and a liquid outlet of the primary denitrification treatment device (18) is positioned at one side close to the first aeration cavity (27) and is communicated with a connecting pipe (29); a second facultative cavity (32), a second aeration cavity (35) and a sedimentation cavity (37) are arranged in the secondary denitrification treatment device (19), the second aeration cavity (35) is positioned between the second facultative cavity (32) and the sedimentation cavity (37), a second partition plate (33) is arranged between the second aeration cavity (35) and the second facultative cavity (32), and a third partition plate (36) is arranged between the second aeration cavity (35) and the sedimentation cavity (37); a liquid inlet of the secondary denitrification treatment device (19) is positioned at one side close to the second facultative cavity (32) and is communicated with the connecting pipe (29), and a liquid outlet of the secondary denitrification treatment device (19) is positioned at one side close to the sedimentation cavity (37) and is communicated with the liquid outlet pipe (23); a first perforation (46) which is communicated with the first facultative cavity (25) and the first aeration cavity (27) is arranged on the first clapboard (26), the lower part of the first clapboard (26) is connected with the inner wall of the primary denitrification treatment device (18), and a gap is formed between the upper part of the first clapboard (26) and the top of the primary denitrification treatment device (18); a second perforation (47) which is communicated with the second facultative cavity (32) and the second aeration cavity (35) is arranged on the second clapboard (33), the lower part of the second clapboard (33) is connected with the inner wall of the secondary denitrification treatment device (19), and a gap is formed between the upper part of the second clapboard (33) and the top of the secondary denitrification treatment device (19); a third perforation (48) which is communicated with the second aeration cavity (35) and the sedimentation cavity (37) is arranged on the third partition plate (36), the lower part of the third partition plate (36) is connected with the inner wall of the secondary denitrification treatment device (19), and a gap is formed between the upper part of the third partition plate (36) and the top of the secondary denitrification treatment device (19); the first perforation (46), the second perforation (47) and the third perforation (48) are inclined upwards along the flowing direction of liquid in the primary denitrification treatment device (18) and the secondary denitrification treatment device (19), the inner wall of the first facultative anaerobic cavity (25) is provided with a first biological filler (30), and the inner wall of the second facultative anaerobic cavity (32) is provided with a second biological filler (31).
9. The low-energy-consumption advanced wastewater treatment system according to claim 8, characterized in that: the device is characterized in that a first air supply branch pipe (38), a second air supply branch pipe (40), a third air supply branch pipe (41) and a fourth air supply branch pipe (43) are arranged on the air supply main pipe (21), the first air supply branch pipe (38) penetrates through the top of the primary denitrification treatment device (18) and is inserted into the first facultative oxygen chamber (25), the second air supply branch pipe (40) is inserted from the side wall of the primary denitrification treatment device (18) and is communicated with a first air distribution device (28) arranged at the bottom of the first aeration chamber (27), the third air supply branch pipe (41) penetrates through the top of the secondary denitrification treatment device (19) and is inserted into the second facultative oxygen chamber (32), and the fourth air supply branch pipe (43) is inserted from the side wall of the secondary denitrification treatment device (19) and is communicated with a second air distribution device (34) arranged at the bottom of the second aeration chamber (35); a first exhaust branch pipe (39) and a second exhaust branch pipe (42) are arranged on the exhaust main pipe (22), one end of the first exhaust branch pipe (39) is communicated with the primary denitrification treatment device (18), and one end of the second exhaust branch pipe (42) is communicated with the secondary denitrification treatment device (19); a first power pump (24) is arranged on the liquid outlet pipe (23), a second power pump (44) is arranged on the connecting pipe (29), and a third power pump (49) is arranged on the return pipe (45).
10. The low-energy-consumption advanced wastewater treatment system according to claim 9, wherein: the air blower room comprises an air storage tank (51) and a fan (53), wherein the air storage tank (51) is respectively communicated with a heating air pipe (7), an air supply main pipe (21) and an air blowing-off pipe (50), the top of the air storage tank (51) is connected with a pressure stabilizing air pipe (52), and an air inlet of the air storage tank (51) is communicated with the fan (53) through a pipeline.
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