CN112429920A - Sewage treatment method based on MUASB anaerobic reactor - Google Patents
Sewage treatment method based on MUASB anaerobic reactor Download PDFInfo
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- 239000010865 sewage Substances 0.000 title claims abstract description 103
- 238000000034 method Methods 0.000 title claims abstract description 36
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 44
- 230000008569 process Effects 0.000 claims abstract description 19
- 230000001105 regulatory effect Effects 0.000 claims abstract description 13
- 239000012535 impurity Substances 0.000 claims abstract description 7
- 239000002245 particle Substances 0.000 claims abstract description 7
- 238000000746 purification Methods 0.000 claims abstract description 7
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 6
- 238000005516 engineering process Methods 0.000 claims abstract 2
- 239000010802 sludge Substances 0.000 claims description 59
- 239000007788 liquid Substances 0.000 claims description 24
- 238000004062 sedimentation Methods 0.000 claims description 18
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 14
- 238000004065 wastewater treatment Methods 0.000 claims description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 239000000945 filler Substances 0.000 claims description 12
- 238000000926 separation method Methods 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 12
- 239000006228 supernatant Substances 0.000 claims description 12
- 239000002957 persistent organic pollutant Substances 0.000 claims description 8
- 241000894006 Bacteria Species 0.000 claims description 6
- 241001148470 aerobic bacillus Species 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 239000003344 environmental pollutant Substances 0.000 claims description 6
- AHEWZZJEDQVLOP-UHFFFAOYSA-N monobromobimane Chemical compound BrCC1=C(C)C(=O)N2N1C(C)=C(C)C2=O AHEWZZJEDQVLOP-UHFFFAOYSA-N 0.000 claims description 6
- 239000010841 municipal wastewater Substances 0.000 claims description 6
- 238000006396 nitration reaction Methods 0.000 claims description 6
- 230000001546 nitrifying effect Effects 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 6
- 231100000719 pollutant Toxicity 0.000 claims description 6
- 238000011268 retreatment Methods 0.000 claims description 6
- 230000001954 sterilising effect Effects 0.000 claims description 6
- 238000009280 upflow anaerobic sludge blanket technology Methods 0.000 abstract description 21
- 238000009792 diffusion process Methods 0.000 abstract description 3
- 230000006872 improvement Effects 0.000 abstract description 3
- 230000021715 photosynthesis, light harvesting Effects 0.000 abstract description 3
- 238000005457 optimization Methods 0.000 abstract 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 22
- 239000002351 wastewater Substances 0.000 description 17
- 229910002092 carbon dioxide Inorganic materials 0.000 description 11
- 238000010276 construction Methods 0.000 description 7
- 238000004939 coking Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005192 partition Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000009360 aquaculture Methods 0.000 description 2
- 244000144974 aquaculture Species 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
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- 229920002521 macromolecule Polymers 0.000 description 2
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- 230000009467 reduction Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- VUZPPFZMUPKLLV-UHFFFAOYSA-N methane;hydrate Chemical compound C.O VUZPPFZMUPKLLV-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/006—Water distributors either inside a treatment tank or directing the water to several treatment tanks; Water treatment plants incorporating these distributors, with or without chemical or biological tanks
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/20—Nature of the water, waste water, sewage or sludge to be treated from animal husbandry
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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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
- C02F3/2846—Anaerobic digestion processes using upflow anaerobic sludge blanket [UASB] reactors
-
- 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
- C02F3/30—Aerobic and anaerobic processes
- C02F3/302—Nitrification and denitrification treatment
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- Hydrology & Water Resources (AREA)
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- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
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Abstract
The invention discloses a sewage treatment method based on a MUASB anaerobic reactor. In the invention, the main body of the device is A2/O-MBBR-N (an anaerobic zone, an anoxic zone, an aerobic zone and a high-efficiency denitrification zone), which is an in-depth improvement and optimization for the A2/O-MBBR process. Domestic sewage is collected by a collecting pipe network and discharged into a sewage grid channel, a coarse grid and a fine grid are arranged in the grid channel, large-particle impurities are removed, the sewage automatically flows into an adjusting tank, and the quality and the quantity of the sewage are homogenized in the adjusting tank. After the sewage is fully regulated and stabilized in the regulating reservoir, the sewage is lifted to an integrated sewage purification device which is dominated by A2/O-MBBR-N technology through a lifting pump, and the decomposition treatment of the sewage is carried out; the effluent removal rate is high, the traditional UASB anaerobic reactor is improved, the UASB anaerobic reactor is regularly partitioned into equal-volume and equal-bottom-area zones in the large-treatment-scale UASB anaerobic reactor, and the water distribution adopts a top vertical point-to-point mode to perform energy dissipation diffusion water distribution by using a water distribution cone. The effluent removal rate is improved to more than 80 percent.
Description
Technical Field
The invention belongs to the technical field of treatment of aquaculture sewage and high-concentration organic wastewater, and particularly relates to a sewage treatment method based on a MUASB anaerobic reactor.
Background
A large number of practical applications prove that the UASB anaerobic reactor with large treatment capacity has water distribution difficulty in the practical operation process, and is particularly remarkable in the application of intensive culture sewage, the sewage concentration is high, the retention time is longer by more than 5 days, and the monomer volume is large. The effective depth of the UASB anaerobic reactor is 8-9 meters generally, the occupied area is increased greatly due to large volume, the height-diameter ratio (or the ratio of the height to the bottom area) is reduced, the water distribution point position is increased greatly, the number of branches is large, the pressure of a water inlet pump is unbalanced, the water distribution is unbalanced, local short flow occurs in the UASB, anaerobic sludge is deposited and accumulated, the volume load is reduced, and the local water distribution is blocked. The UASB anaerobic reactor needs to be maintained regularly, and the problem of sludge accumulation is solved by high-pressure blockage removal, so that the operation is difficult. Reduction of removal rate: the conventional UASB anaerobic reactor carries out biological reaction on organic matters in sewage through suspension of anaerobic granular sludge (or suspension of flocculent sludge) to convert the organic matters into methane, carbon dioxide, water and the like, and because the large-volume anaerobic reactor has unbalanced water distribution and deposited local short-flow sludge in the actual operation process, the volume load is reduced, the volume of an effective reaction area is reduced, and the removal rate is hardly over 70 percent. Construction difficulty: the existing UASB anaerobic reactor mainly adopts a square or round shape in the construction process, and due to the large volume, the non-uniform settlement of a foundation easily occurs in the construction process, or the gravity center of the UASB tank body can shift when the foundation is not vertical slightly, so that the safety risk exists.
The anaerobic reactor has more safety accident cases caused by gravity center shift collapse, and the construction of the conventional UASB anaerobic reactor is difficult from the structural point of view. Energy consumption is too high, the running cost is higher: at present, in the UASB anaerobic reactor, the large-scale treatment process of high-concentration organic wastewater has more water distribution points due to larger occupied area. In order to maintain uniform and stable water distribution at the water distribution point, high-pressure water inlet (or return water) which is about 3 times of the ordinary water inlet is usually adopted, so that short flow is prevented, the ascending flow rate is ensured, and the region of local sediment accumulation is reduced. Therefore, a large amount of energy consumption is needed in the operation process, the operation cost is greatly increased, the requirement on operation and maintenance management is high, and the operation cost is invisibly increased. The UASB anaerobic reactor is proved by the improvement and practice of the UASB anaerobic reactor. UASB anaerobic reactor in large scale treatment; in the regular mode, the UASB anaerobic reactor is subjected to equal-volume equal-bottom-area partition, and the water distribution adopts a top vertical point-to-point mode to perform energy dissipation diffusion water distribution by using a water distribution cone. Operation fault points can be greatly reduced, and later-stage operation and maintenance difficulty can be reduced. By adopting the improved process route, the removal efficiency is improved by 10-20 percent and reaches more than 80 percent. From the stability of structure, with the reinforcing of the internal subregion back jar body wholeness, the reinforcing of jar wall anti skew shear force, the structure is more stable, and the security improves by a wide margin.
Disclosure of Invention
The invention aims to: in order to solve the problems, a sewage treatment method based on a MUASB anaerobic reactor is provided.
The technical scheme adopted by the invention is as follows: a sewage treatment method based on a MUASB anaerobic reactor needs the following equipment and components: sewage inlet pipe, temperature sensor, electromagnetic flowmeter, air stripping mud return pipe, nitration liquid return pipe, manual ball valve, air conduit motorised valve, check valve, row mud pipeline, solenoid valve, clear water discharge pipe.
In a preferred embodiment, the MUASB anaerobic reactor-based wastewater treatment method comprises the steps of:
s1, collecting domestic sewage through a collecting pipe network, discharging the domestic sewage into a sewage grating channel, mounting a coarse grating and a fine grating in the grating channel, removing large-particle impurities, automatically flowing the sewage into an adjusting tank, and homogenizing the quality and quantity of the sewage in the adjusting tank;
s2, after the domestic sewage is pumped into the anaerobic section, the anaerobic activated sludge in the anaerobic section decomposes the macromolecular organic pollutants into micromolecular organic matters, methane, CO2 and other substances, and then the micromolecular organic matters automatically flow into the anoxic section;
s3, decomposing part of organic matters through facultative bacteria in an anoxic section, and then enabling effluent to automatically flow into an MBBR tank filled with suspended fillers;
s4, decomposing the organic matters in the sewage into CO2, water and the like through the aerobic bacteria attached and grown on the suspended filler;
s5, nitrifying nitrogen-containing substances in the sewage, and performing solid-liquid separation and denitrification on the effluent through a high-efficiency denitrification tank;
s6, separating the free suspended matters from the effluent through an inclined tube sedimentation tank, and sterilizing the effluent through an ultraviolet sterilizer to achieve the first-class A standard of discharge Standard of pollutants for municipal wastewater treatment plants or resource utilization.
In a preferred embodiment, in step S1, after the wastewater is sufficiently adjusted in the adjustment tank to stabilize the quality of the wastewater, the wastewater is lifted by a lift pump into an integrated wastewater purification facility mainly based on the a2/O-MBBR-N process, and then the wastewater is decomposed.
In a preferred embodiment, in the step S5, the nitrified liquid is refluxed to the anoxic tank by the low gas consumption stripping device to perform partial denitrification and denitrification, and finally the removal of nitrogen is ensured by the secondary denitrification treatment of the high-efficiency denitrification tank.
In a preferred embodiment, in the step S4, the sludge is returned to the anaerobic tank in the high efficiency denitrification tank, so as to prevent a large amount of activated sludge from escaping due to low domestic sewage concentration, thereby ensuring the required amount of activated sludge in the process system.
In a preferred embodiment, in step S6, the free activated sludge in the supernatant effluent is subjected to solid-liquid separation in the inclined-tube sedimentation tank, so as to ensure the suspended matter content of the effluent.
In a preferred embodiment, in step S6, the sludge in the inclined tube sedimentation tank is periodically discharged to a sludge tank, the sludge in the sludge tank is periodically transported or dried, and the supernatant overflows into a regulating tank for retreatment, so as to ensure that the sewage is discharged after reaching standards.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. in the invention, the effluent waterThe removal rate is high, the traditional UASB anaerobic reactor is improved, the UASB anaerobic reactor is regularly partitioned into equal-volume and equal-bottom-area zones in the UASB anaerobic reactor with large treatment scale, and the water distribution adopts a top vertical point-to-point mode to perform energy dissipation diffusion water distribution by using a water distribution cone. The effluent removal rate is improved to more than 80 percent. The construction mode is flexible: aiming at various treatment scales, the design requirement of the anaerobic reactor is ensured by regularly carrying out equal-volume equal-bottom area partition in the reactor, and the problem that the monomer volume of the conventional UASB anaerobic reactor is not suitable to be more than 2000m3To a problem of (a). Multiple assemblies or integrated constructions may be employed.
2. According to the invention, the traditional UASB anaerobic reactor is improved, the equivoluminal and equal-bottom-area partitions are regularly carried out in the reactor, so that the water distribution point position is reduced, water is vertically and vertically fed, the water distribution cone is adopted to dissipate energy and uniformly distribute water, the water feeding pressure is reduced, and the water feeding energy consumption is reduced. Anaerobic reactors with different treatment scales can be integrally constructed, and the investment cost is reduced. The energy conservation and the cost reduction are realized. Modularization: can be according to the actual conditions in project location, according to local conditions modularization concatenation as an organic whole, reduce the construction degree of difficulty. Operation and maintenance management: the invention has simple operation, lower maintenance requirement, lower requirement on professional quality of operation maintainers and only needs regular inspection, thereby reducing the labor burden of the staff.
Drawings
FIG. 1 is a schematic diagram of the apparatus of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below 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 invention.
With reference to figure 1 of the drawings,
the first embodiment is as follows:
a sewage treatment method based on a MUASB anaerobic reactor needs the following equipment and components: sewage inlet pipe, temperature sensor, electromagnetic flowmeter, air stripping mud return pipe, nitration liquid return pipe, manual ball valve, air conduit motorised valve, check valve, row mud pipeline, solenoid valve, clear water discharge pipe.
The sewage treatment method based on the MUASB anaerobic reactor comprises the following steps:
s1, collecting domestic sewage through a collecting pipe network, discharging the domestic sewage into a sewage grating channel, mounting a coarse grating and a fine grating in the grating channel, removing large-particle impurities, automatically flowing the sewage into an adjusting tank, and homogenizing the quality and quantity of the sewage in the adjusting tank; in the step S1, after the sewage is fully regulated and stabilized in the regulating reservoir, the sewage is lifted to an integrated sewage purification device which is dominated by the A2/O-MBBR-N process through a lift pump, and the decomposition treatment of the sewage is carried out;
s2, after the domestic sewage is pumped into the anaerobic section, the anaerobic activated sludge in the anaerobic section decomposes the macromolecular organic pollutants into micromolecular organic matters, methane, CO2 and other substances, and then the micromolecular organic matters automatically flow into the anoxic section;
s3, decomposing part of organic matters through facultative bacteria in an anoxic section, and then enabling effluent to automatically flow into an MBBR tank filled with suspended fillers;
s4, decomposing the organic matters in the sewage into CO2, water and the like through the aerobic bacteria attached and grown on the suspended filler; in the step S4, the sludge is refluxed to the anaerobic tank in the high-efficiency denitrification tank, so that the active sludge with too low domestic sewage concentration is prevented from escaping in large quantity, and the demand of the active sludge in the process system is ensured;
s5, nitrifying nitrogen-containing substances in the sewage, and performing solid-liquid separation and denitrification on the effluent through a high-efficiency denitrification tank; in the step S5, the nitrified liquid flows back to the anoxic tank through the low-gas-consumption stripping device to perform partial denitrification and denitrification, and finally the removal of nitrogen is ensured through secondary denitrification treatment of the high-efficiency denitrification tank;
s6, separating free suspended matters from the effluent through an inclined tube sedimentation tank, and sterilizing the effluent through an ultraviolet sterilizer to achieve the first-class A standard of discharge Standard of pollutants for municipal wastewater treatment plants or resource utilization; in the step S6, performing solid-liquid separation on free activated sludge in the supernatant effluent in an inclined tube sedimentation tank to ensure the content of suspended matters in the effluent; in the step S6, sludge in the inclined tube sedimentation tank is periodically discharged to a sludge tank, sludge in the sludge tank is periodically transported outwards or dried, and supernatant overflows into an adjusting tank for retreatment so as to ensure that the sewage is discharged after reaching the standard.
Example two:
a sewage treatment method based on a MUASB anaerobic reactor needs the following equipment and components: sewage inlet pipe, temperature sensor, electromagnetic flowmeter, air stripping mud return pipe, nitration liquid return pipe, manual ball valve, air conduit motorised valve, check valve, row mud pipeline, solenoid valve, clear water discharge pipe.
The sewage treatment method based on the MUASB anaerobic reactor comprises the following steps:
s1, collecting and discharging the high-concentration organic wastewater into a sewage grid channel through a collecting pipe network, mounting coarse and fine grids in the grid channel, removing large-particle impurities, automatically flowing the sewage into an adjusting tank, and homogenizing the water quality and water quantity of the sewage in the adjusting tank; in the step S1, after the sewage is fully regulated and stabilized in the regulating reservoir, the sewage is lifted to an integrated sewage purification device which is dominated by the A2/O-MBBR-N process through a lift pump, and the decomposition treatment of the sewage is carried out;
s2, pumping high-concentration organic wastewater into an anaerobic section, decomposing macromolecular organic pollutants into micromolecular organic matters, methane, CO2 and other substances through anaerobic activated sludge in the anaerobic section, and automatically flowing into an anoxic section;
s3, decomposing part of organic matters through facultative bacteria in an anoxic section, and then enabling effluent to automatically flow into an MBBR tank filled with suspended fillers;
s4, decomposing the organic matters in the sewage into CO2, water and the like through the aerobic bacteria attached and grown on the suspended filler; in the step S4, the sludge is refluxed to the anaerobic tank in the high-efficiency denitrification tank, so that the active sludge is prevented from escaping greatly due to the fact that the concentration of the high-concentration organic wastewater is too low, and the demand of the active sludge in the process system is ensured;
s5, nitrifying nitrogen-containing substances in the sewage, and performing solid-liquid separation and denitrification on the effluent through a high-efficiency denitrification tank; in the step S5, the nitrified liquid flows back to the anoxic tank through the low-gas-consumption stripping device to perform partial denitrification and denitrification, and finally the removal of nitrogen is ensured through secondary denitrification treatment of the high-efficiency denitrification tank;
s6, separating free suspended matters from the effluent through an inclined tube sedimentation tank, and sterilizing the effluent through an ultraviolet sterilizer to achieve the first-class A standard of discharge Standard of pollutants for municipal wastewater treatment plants or resource utilization; in the step S6, performing solid-liquid separation on free activated sludge in the supernatant effluent in an inclined tube sedimentation tank to ensure the content of suspended matters in the effluent; in the step S6, sludge in the inclined tube sedimentation tank is periodically discharged to a sludge tank, sludge in the sludge tank is periodically transported outwards or dried, and supernatant overflows into an adjusting tank for retreatment so as to ensure that the sewage is discharged after reaching the standard.
Example three:
a sewage treatment method based on a MUASB anaerobic reactor needs the following equipment and components: sewage inlet pipe, temperature sensor, electromagnetic flowmeter, air stripping mud return pipe, nitration liquid return pipe, manual ball valve, air conduit motorised valve, check valve, row mud pipeline, solenoid valve, clear water discharge pipe.
The sewage treatment method based on the MUASB anaerobic reactor comprises the following steps:
s1, collecting and discharging the aquaculture wastewater into a sewage grid channel through a collecting pipe network, mounting a coarse grid and a fine grid in the grid channel, removing large-particle impurities, automatically flowing the sewage into an adjusting tank, and homogenizing the water quality and the water quantity of the sewage in the adjusting tank; in the step S1, after the sewage is fully regulated and stabilized in the regulating reservoir, the sewage is lifted to an integrated sewage purification device which is dominated by the A2/O-MBBR-N process through a lift pump, and the decomposition treatment of the sewage is carried out;
s2, after the culture wastewater is pumped into the anaerobic section, the organic pollutants with macromolecules are decomposed into micromolecular organic matters, methane, CO2 and other substances by anaerobic activated sludge in the anaerobic section, and then the organic pollutants automatically flow into the anoxic section;
s3, decomposing part of organic matters through facultative bacteria in an anoxic section, and then enabling effluent to automatically flow into an MBBR tank filled with suspended fillers;
s4, decomposing the organic matters in the sewage into CO2, water and the like through the aerobic bacteria attached and grown on the suspended filler; in the step S4, the sludge is refluxed to the anaerobic tank in the high-efficiency denitrification tank, so that the situation that a large amount of activated sludge escapes due to too low concentration of the culture wastewater is avoided, and the demand of the activated sludge in a process system is ensured;
s5, nitrifying nitrogen-containing substances in the sewage, and performing solid-liquid separation and denitrification on the effluent through a high-efficiency denitrification tank; in the step S5, the nitrified liquid flows back to the anoxic tank through the low-gas-consumption stripping device to perform partial denitrification and denitrification, and finally the removal of nitrogen is ensured through secondary denitrification treatment of the high-efficiency denitrification tank;
s6, separating free suspended matters from the effluent through an inclined tube sedimentation tank, and sterilizing the effluent through an ultraviolet sterilizer to achieve the first-class A standard of discharge Standard of pollutants for municipal wastewater treatment plants or resource utilization; in the step S6, performing solid-liquid separation on free activated sludge in the supernatant effluent in an inclined tube sedimentation tank to ensure the content of suspended matters in the effluent; in the step S6, sludge in the inclined tube sedimentation tank is periodically discharged to a sludge tank, sludge in the sludge tank is periodically transported outwards or dried, and supernatant overflows into an adjusting tank for retreatment so as to ensure that the sewage is discharged after reaching the standard.
Example four:
a sewage treatment method based on a MUASB anaerobic reactor needs the following equipment and components: sewage inlet pipe, temperature sensor, electromagnetic flowmeter, air stripping mud return pipe, nitration liquid return pipe, manual ball valve, air conduit motorised valve, check valve, row mud pipeline, solenoid valve, clear water discharge pipe.
The sewage treatment method based on the MUASB anaerobic reactor comprises the following steps:
s1, collecting the coking wastewater through a collecting pipe network and discharging the coking wastewater into a sewage grating channel, mounting a coarse grating and a fine grating in the grating channel, removing large-particle impurities, automatically flowing the sewage into an adjusting tank, and homogenizing the quality and quantity of the sewage in the adjusting tank; in the step S1, after the sewage is fully regulated and stabilized in the regulating reservoir, the sewage is lifted to an integrated sewage purification device which is dominated by the A2/O-MBBR-N process through a lift pump, and the decomposition treatment of the sewage is carried out;
s2, after the coking wastewater is pumped into the anaerobic section, the organic pollutants with macromolecules are decomposed into micromolecular organic matters, methane, CO2 and other substances by anaerobic activated sludge in the anaerobic section, and then the organic pollutants automatically flow into the anoxic section;
s3, decomposing part of organic matters through facultative bacteria in an anoxic section, and then enabling effluent to automatically flow into an MBBR tank filled with suspended fillers;
s4, decomposing the organic matters in the sewage into CO2, water and the like through the aerobic bacteria attached and grown on the suspended filler; in the step S4, the sludge is refluxed to the anaerobic tank in the high-efficiency denitrification tank, so that the active sludge with too low coking wastewater concentration is prevented from escaping in large quantity, and the demand of the active sludge in the process system is ensured;
s5, nitrifying nitrogen-containing substances in the sewage, and performing solid-liquid separation and denitrification on the effluent through a high-efficiency denitrification tank; in the step S5, the nitrified liquid flows back to the anoxic tank through the low-gas-consumption stripping device to perform partial denitrification and denitrification, and finally the removal of nitrogen is ensured through secondary denitrification treatment of the high-efficiency denitrification tank;
s6, separating free suspended matters from the effluent through an inclined tube sedimentation tank, and sterilizing the effluent through an ultraviolet sterilizer to achieve the first-class A standard of discharge Standard of pollutants for municipal wastewater treatment plants or resource utilization; in the step S6, performing solid-liquid separation on free activated sludge in the supernatant effluent in an inclined tube sedimentation tank to ensure the content of suspended matters in the effluent; in the step S6, sludge in the inclined tube sedimentation tank is periodically discharged to a sludge tank, sludge in the sludge tank is periodically transported outwards or dried, and supernatant overflows into an adjusting tank for retreatment so as to ensure that the sewage is discharged after reaching the standard.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. A sewage treatment method based on a MUASB anaerobic reactor is characterized in that: the sewage treatment method based on the MUASB anaerobic reactor needs to use the following equipment and components: sewage inlet pipe, temperature sensor, electromagnetic flowmeter, air stripping mud return pipe, nitration liquid return pipe, manual ball valve, air conduit motorised valve, check valve, row mud pipeline, solenoid valve, clear water discharge pipe.
2. The MUASB anaerobic reactor-based wastewater treatment method of claim 1, wherein: the sewage treatment method based on the MUASB anaerobic reactor comprises the following steps:
s1, collecting domestic sewage through a collecting pipe network, discharging the domestic sewage into a sewage grating channel, mounting a coarse grating and a fine grating in the grating channel, removing large-particle impurities, automatically flowing the sewage into an adjusting tank, and homogenizing the quality and quantity of the sewage in the adjusting tank;
s2, after the domestic sewage is pumped into the anaerobic section, the anaerobic activated sludge in the anaerobic section decomposes the macromolecular organic pollutants into micromolecular organic matters, methane, CO2 and other substances, and then the micromolecular organic matters automatically flow into the anoxic section;
s3, decomposing part of organic matters through facultative bacteria in an anoxic section, and then enabling effluent to automatically flow into an MBBR tank filled with suspended fillers;
s4, decomposing the organic matters in the sewage into CO2, water and the like through the aerobic bacteria attached and grown on the suspended filler;
s5, nitrifying nitrogen-containing substances in the sewage, and performing solid-liquid separation and denitrification on the effluent through a high-efficiency denitrification tank;
s6, separating the free suspended matters from the effluent through an inclined tube sedimentation tank, and sterilizing the effluent through an ultraviolet sterilizer to achieve the first-class A standard of discharge Standard of pollutants for municipal wastewater treatment plants or resource utilization.
3. The MUASB anaerobic reactor-based wastewater treatment method of claim 1, wherein: in the step S1, after the sewage is fully regulated and stabilized in the regulating reservoir, the sewage is lifted to an integrated sewage purification device with the A2/O-MBBR-N technology as the leading part through a lifting pump, and the decomposition treatment of the sewage is carried out.
4. The MUASB anaerobic reactor-based wastewater treatment method of claim 1, wherein: in the step S5, the nitrified liquid flows back to the anoxic tank through the low-gas-consumption stripping device to perform partial denitrification and denitrification, and finally the removal of nitrogen is ensured through secondary denitrification treatment of the high-efficiency denitrification tank.
5. The MUASB anaerobic reactor-based wastewater treatment method of claim 1, wherein: in the step S4, the sludge is refluxed to the anaerobic tank in the high-efficiency denitrification tank, so that the active sludge with too low domestic sewage concentration is prevented from escaping in a large amount, and the demand of the active sludge in the process system is ensured.
6. The MUASB anaerobic reactor-based wastewater treatment method of claim 1, wherein: in the step S6, the free activated sludge in the supernatant effluent is subjected to solid-liquid separation in the inclined tube sedimentation tank, so that the content of suspended matters in the effluent is ensured.
7. The MUASB anaerobic reactor-based wastewater treatment method of claim 1, wherein: in the step S6, sludge in the inclined tube sedimentation tank is periodically discharged to a sludge tank, sludge in the sludge tank is periodically transported outwards or dried, and supernatant overflows into an adjusting tank for retreatment so as to ensure that the sewage is discharged after reaching the standard.
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| CN110668659A (en) * | 2019-11-13 | 2020-01-10 | 云南妙拓环保科技有限公司 | Integrated sewage purification equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2012010096A1 (en) * | 2010-07-20 | 2012-01-26 | 华南理工大学 | Device for synchronously removing nitrogen and phosphorus in mixed municipal sewage and fecal sewage by using a2/o-biomembrane and method thereof |
| CN106430861A (en) * | 2016-12-08 | 2017-02-22 | 重庆淏园环保科技有限公司 | Efficient MBBR (moving bed biofilm reactor) sewage treatment device and sewage treatment process thereof |
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