CN211419727U - Efficient short-flow sewage treatment device - Google Patents
Efficient short-flow sewage treatment device Download PDFInfo
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- CN211419727U CN211419727U CN201921854781.5U CN201921854781U CN211419727U CN 211419727 U CN211419727 U CN 211419727U CN 201921854781 U CN201921854781 U CN 201921854781U CN 211419727 U CN211419727 U CN 211419727U
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Abstract
The utility model relates to a high-efficient short flow's sewage treatment plant belongs to sewage treatment machining and makes the field. The device is sequentially provided with an MBR (membrane bioreactor) tank and a pyrite autotrophic denitrification filter tank; the sulfur-iron autotrophic denitrification filter is provided with a packing layer, and the packing layer comprises stone particles and a sulfur-iron packing layer from bottom to top; the sulfur-iron packing layer comprises sulfur particles and an iron packing layer, the iron packing layer is provided with a bearing layer at the upper part and the lower part, and the bearing layer is provided with water distribution holes; the iron filler layer is formed by placing iron chips in a screen mesh and is also provided with iron filler replacement openings. The utility model provides an iron fillings are placed in the screen cloth, and arrange with multistage sulphur-iron mode of arranging, do benefit to the effect of full play iron chemical dephosphorization, and when iron fillings consume to some extent can not satisfy the dephosphorization requirement, the change that iron packed is carried out to the accessible replacement opening, and convenient and fast has effectively avoided hardening and the change problem of packing.
Description
Technical Field
The utility model relates to a high-efficient short flow's sewage treatment plant belongs to sewage treatment machining and makes the field.
Background
At present, the national urban sewage treatment plant generally executes the primary A discharge standard (hereinafter referred to as the primary A standard) in the pollutant discharge standard of the urban sewage treatment plant (GB18918-2002), and the indexes of main pollutants such as effluent COD, total nitrogen, ammonia nitrogen, total phosphorus and the like respectively do not exceed 50mg/L, 15mg/L, 5mg/L and 0.5 mg/L. In 2018, 6 and 1, the emission limits of main water pollutants of urban sewage treatment plants in Taihu lake regions and key industrial industries (DB 32/1072-2018) are issued, and the urban sewage treatment plants in Taihu lake regions in Jiangsu province are required to be standardized again on the basis of the first-level A standard, wherein the emission standards of the main pollutants such as COD, total nitrogen, ammonia nitrogen, total phosphorus and the like in the effluent of the urban sewage treatment plants in the first-level and second-level protection areas of the Taihu lake basin are respectively improved to 40mg/L, 10mg/L, 3mg/L and 0.3mg/L, and the difficulty in sewage treatment is remarkably improved. In order to realize the standard discharge of effluent, most sewage treatment plants need to ensure enough hydraulic retention time in a biochemical tank, wherein the hydraulic retention time of anaerobic, anoxic and aerobic sections is generally not less than 1h, 3h and 8h respectively, and in order to realize the deep removal of nitrogen and phosphorus, the effluent of the biochemical tank generally needs to be provided with a denitrification filter tank for deep denitrification, coagulating sedimentation filtration or air flotation process to realize deep phosphorus removal, so that the process flow of sewage treatment is overlong, the occupied area is large, the adding amount of carbon source and phosphorus removal agent is large, the operation cost is increased, and the low-carbon discharge and the circular economy development mode are not facilitated. The mixed layer is directly formed by iron filings and sulfur in the prior art, so that the iron filings and sulfur particles are easy to harden, short flow is caused, and nitrogen and phosphorus removal is not facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the defects in the prior art, providing an MBR/S-Fe autotrophic denitrification sewage treatment combination device, reducing the hydraulic retention time of the whole combination device, avoiding adding carbon source and phosphorus removal agent and reducing the operation cost. Therefore, the combined process has the advantages of shortening the process flow, saving the occupied area and reducing the operating cost.
The utility model relates to a high-efficiency short-flow sewage treatment device, which is provided with an MBR tank and a pyrite autotrophic denitrification filter tank in sequence; the ferro-sulphur autotrophic denitrification filter tank is connected with an MBR water outlet pipe through an MBR water outlet pump; the sulfur-iron autotrophic denitrification filter is provided with a packing layer, and the packing layer comprises stone particles and a sulfur-iron packing layer from bottom to top; the sulfur iron packing layer comprises sulfur particles and an iron packing layer, the iron packing layer is provided with a bearing layer at the upper part and the lower part, the middle part is provided with a screen, and the bearing layer is provided with water distribution holes; the iron filler layer is formed by placing iron chips in a screen mesh, and iron filler replacement openings are further formed in the side face of the iron filler layer.
In one embodiment of the present invention, the sulfur particles and the iron packing layer are arranged in a discontinuous arrangement. The utility model provides an iron fillings are placed in the screen cloth, and arrange with multistage sulphur-iron mode of arranging, do benefit to the effect of full play iron chemical dephosphorization, and when iron fillings consume to some extent can not satisfy the dephosphorization requirement, the change that iron packed is carried out to the accessible replacement opening, and convenient and fast has effectively avoided hardening and the change problem of packing.
In one embodiment of the present invention, the MBR tank is connected to a feed pump through a feed pipe; the MBR tank comprises a membrane component and an aeration device; the aeration device is positioned at the bottom of the MBR tank and comprises a fan, an aeration pipe and an aerator, wherein the fan is positioned outside the aeration tank and is connected with the aerator through the aeration pipe.
In one embodiment of the utility model, the membrane module is arranged right above the aeration device and is 10-20cm away from the bottom of the aeration tank, which is beneficial to carrying out sufficient aeration disturbance and reducing membrane pollution; the MBR water outlet pump is connected with the membrane module through an MBR water outlet pipe; and the ferro-sulphur autotrophic denitrification filter is connected with an MBR water outlet pipe through an MBR water outlet pump.
In one embodiment of the present invention, the membrane material in the membrane module is PVDF, and the pore size is 0.01 μm, which is used for sufficient mud-water separation.
In one embodiment of the present invention, the number of membrane modules is the same as the number of aerators, and an aerator is disposed under each membrane module and an outlet pipe is disposed over each membrane module. The effect of this arrangement is to ensure that a uniform water outlet can be achieved per unit of membrane module.
The utility model has the advantages that:
(1) the utility model provides an iron fillings are placed in the screen cloth, and arrange with multistage sulphur-iron mode of arranging, do benefit to the effect of full play iron chemical dephosphorization, and when iron fillings consume to some extent can not satisfy the dephosphorization requirement, the change that iron packed is carried out to the accessible replacement opening, and convenient and fast has effectively avoided hardening and the change problem of packing.
(2) The utility model discloses in intake water enters into MBR device through the intake pump, MBR device can maintain higher sludge concentration, provide sufficient oxygen as electron acceptor for aerobic degradation microorganism through the aeration pump, realize the complete nitrification of ammonia nitrogen and the removal of COD; good sludge-water separation can be realized by MBR membrane filtration, and effluent contains no suspended matters and only contains partially soluble nitrate nitrogen and phosphate pollutants; MBR effluent enters an S-Fe autotrophic denitrification filter tank, water flows through a sulfur-iron mixed filler layer from bottom to top, nitrate nitrogen and phosphate are removed through sulfur autotrophic nitrogen removal and iron chemical phosphorus removal, the nitrogen and phosphorus removal process is completed, a carbon source and a phosphorus removal agent are not required to be added, the operation cost can be saved by about 25%, and the sewage treatment cost is effectively reduced.
Drawings
FIG. 1 is a schematic structural view of the MBR/S-Fe autotrophic denitrification device of the present invention;
FIG. 2 is a structural diagram of a sulfur iron packing layer of the present invention;
wherein, 1: a water inlet pump; 2: a fan; 3: an aeration pipe; 4: an aerator; 5: a membrane module; 6: an MBR water outlet pipe; 7: an MBR tank; 8: an MBR water outlet pump; 9: stone particles; 10: sulfur particles; 11: water distribution holes; 12: a support layer; 13: replacing the opening with iron filler; 14: scrap iron; 15: a sulfur-iron autotrophic denitrification filter.
Detailed Description
To achieve the above objects, features and advantages and in accordance with the purpose of the invention, as embodied and broadly described herein, the present invention will be described in detail with reference to the accompanying drawings.
As shown in fig. 1, the utility model discloses a high-efficiency short-flow sewage treatment device, which is provided with an MBR tank 7 and a pyrite autotrophic denitrification filter 15 in sequence; the ferro-sulphur autotrophic denitrification filter 15 is connected with an MBR water outlet pipe 6 through an MBR water outlet pump 8; the sulfur-iron autotrophic denitrification filter 15 is provided with a packing layer, and the packing layer comprises stone grains 9 and a sulfur-iron packing layer from bottom to top; the sulfur-iron filler layer comprises sulfur particles 10 and an iron filler layer, the iron filler layer is provided with a bearing layer 12 at the upper part and the lower part, a screen is arranged in the middle, and the bearing layer 12 is provided with water distribution holes 11; iron filings 14 are placed in the iron filler layer, and iron filler replacement openings 13 are further arranged on the side surface of the iron filler layer.
The sulfur granules 10 and the iron packing layer are arranged in a discontinuous arrangement. The iron chips are placed in the screen, and are arranged in a multi-stage sulfur-iron arrangement mode, so that the effect of iron chemical dephosphorization is favorably and fully exerted, and when the iron chips are consumed and the dephosphorization requirement cannot be met, the iron filler can be replaced through the replacement opening, the operation is convenient and fast, and the problems of hardening and replacement of the filler are effectively avoided.
The MBR tank 7 is connected with the water inlet pump 1 through a water inlet pipe; the MBR tank 7 comprises a membrane module 5 and an aeration device; the aeration device is positioned at the bottom of the MBR tank 7 and comprises a fan 2, an aeration pipe 3 and an aerator 4, wherein the fan 2 is positioned outside the MBR tank 7 and is connected with the aerator 4 through the aeration pipe 3. The aeration tank is used for realizing the degradation of organic matters and the nitrification of ammonia nitrogen.
The membrane component 5 is arranged right above the aeration device and is 10-20cm away from the bottom of the MBR tank 7, so that full aeration disturbance is facilitated, and membrane pollution is reduced; the MBR water outlet pump 8 is connected with the membrane module 5 through an MBR water outlet pipe 6. The membrane material in the membrane component 5 is PVDF, the aperture is 0.01 micron, and the effect is to carry out sufficient mud-water separation. The number of the membrane modules 5 is the same as that of the aerators 4, one aerator 4 is arranged right below each membrane module 5, and a water outlet pipe 6 is arranged right above each membrane module 5. The effect of this arrangement is to ensure that a uniform water outlet can be achieved per unit of membrane module.
The utility model discloses a theory of operation does: starting a water inlet pump, pumping the sewage into an MBR (membrane bioreactor) tank, oxygenating by an aeration pump, and providing enough oxygen for aerobic degradation microorganisms as an electron acceptor to realize complete nitrification of ammonia nitrogen and removal of COD (chemical oxygen demand); sludge-water separation is realized through MBR membrane filtration, and effluent does not contain suspended matters and only contains partially soluble nitrate nitrogen and phosphate pollutants; MBR effluent pumps sewage into the S-Fe autotrophic denitrification filter tank through an MBR effluent pump, water flows through the stone grain and sulfur-iron mixed packing layer from bottom to top, nitrate nitrogen and phosphate are removed through sulfur autotrophic nitrogen removal and iron chemical phosphorus removal, the nitrogen and phosphorus removal process is completed, and finally stable standard-reaching discharge of main water quality indexes such as COD, ammonia nitrogen, total phosphorus and the like is realized.
The protection scope of the present invention is not limited to the above embodiments, and any modifications, equivalent replacements, and improvements that can be made by a person skilled in the art within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A high-efficiency short-flow sewage treatment device is characterized in that the device is sequentially provided with an MBR (membrane bioreactor) tank and a pyrite autotrophic denitrification filter tank; the ferro-sulphur autotrophic denitrification filter tank is connected with an MBR water outlet pipe through an MBR water outlet pump; the sulfur-iron autotrophic denitrification filter is provided with a filler layer, wherein the filler layer comprises a sulfur-iron filler layer, and the sulfur-iron filler layer comprises sulfur particles and an iron filler layer; the upper part and the lower part of the iron packing layer are provided with bearing layers, and the middle part is provided with a screen; the iron packing layer is formed by placing iron chips in a screen, and an iron packing replacement opening is formed in the side surface of the iron packing layer.
2. The efficient short-flow wastewater treatment plant according to claim 1, wherein said packing layer further comprises a stone particle filter; the stone grain filter material is positioned below the ferro-sulphur packing layer.
3. The apparatus of claim 1, wherein the supporting layer has water distribution holes.
4. The high-efficiency short-flow sewage treatment plant according to claim 1, wherein the sulphur particles and the iron filler layer are arranged in an intermittent arrangement.
5. The efficient short-flow wastewater treatment device of claim 1, wherein the MBR tank is connected with a water inlet pump through a water inlet pipe; the MBR tank comprises a membrane module and an aeration device.
6. The efficient short-flow wastewater treatment device of claim 5, wherein the aeration device is located at the bottom of the MBR tank and comprises a fan, an aeration pipe and an aerator, and the fan is located outside the aeration tank and is connected with the aerator through the aeration pipe.
7. The high-efficiency short-flow sewage treatment plant according to claim 5, wherein said membrane module is disposed directly above the aeration device; the MBR water outlet pump is connected with the membrane module through an MBR water outlet pipe.
8. The apparatus of claim 5, wherein the membrane material of the membrane module is PVDF.
9. The apparatus of claim 5, wherein the number of membrane modules is the same as the number of aerators, and each membrane module has an aerator disposed directly below and a water outlet pipe disposed directly above.
10. The high-efficiency short-flow sewage treatment plant according to claim 1, wherein the sulfur-iron autotrophic denitrification filter is an upflow filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921854781.5U CN211419727U (en) | 2019-10-30 | 2019-10-30 | Efficient short-flow sewage treatment device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921854781.5U CN211419727U (en) | 2019-10-30 | 2019-10-30 | Efficient short-flow sewage treatment device |
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| CN211419727U true CN211419727U (en) | 2020-09-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113024032A (en) * | 2021-03-15 | 2021-06-25 | 浙江双益环保科技发展有限公司 | Shortcut nitrification and denitrification coupled anaerobic ammonia oxidation-MBR-sulfur autotrophic denitrification process and system |
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2019
- 2019-10-30 CN CN201921854781.5U patent/CN211419727U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113024032A (en) * | 2021-03-15 | 2021-06-25 | 浙江双益环保科技发展有限公司 | Shortcut nitrification and denitrification coupled anaerobic ammonia oxidation-MBR-sulfur autotrophic denitrification process and system |
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