CN107814468B - Rural domestic sewage purification wetland system - Google Patents
Rural domestic sewage purification wetland system Download PDFInfo
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- CN107814468B CN107814468B CN201711342872.6A CN201711342872A CN107814468B CN 107814468 B CN107814468 B CN 107814468B CN 201711342872 A CN201711342872 A CN 201711342872A CN 107814468 B CN107814468 B CN 107814468B
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- 239000010865 sewage Substances 0.000 title claims abstract description 55
- 238000000746 purification Methods 0.000 title claims abstract description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 98
- 239000010802 sludge Substances 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims description 110
- 238000000926 separation method Methods 0.000 claims description 77
- 238000005192 partition Methods 0.000 claims description 43
- 238000010992 reflux Methods 0.000 claims description 38
- 239000000945 filler Substances 0.000 claims description 25
- 238000005273 aeration Methods 0.000 claims description 20
- 230000001954 sterilising effect Effects 0.000 claims description 20
- 239000007787 solid Substances 0.000 claims description 14
- 238000004659 sterilization and disinfection Methods 0.000 claims description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 2
- 229910052760 oxygen Inorganic materials 0.000 claims 2
- 239000001301 oxygen Substances 0.000 claims 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 8
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 abstract description 4
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 4
- 229910052698 phosphorus Inorganic materials 0.000 abstract description 4
- 239000011574 phosphorus Substances 0.000 abstract description 4
- 239000002245 particle Substances 0.000 abstract description 3
- 239000002351 wastewater Substances 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 30
- 238000011049 filling Methods 0.000 description 12
- 238000004062 sedimentation Methods 0.000 description 12
- 210000003608 fece Anatomy 0.000 description 10
- 239000010871 livestock manure Substances 0.000 description 10
- 238000010586 diagram Methods 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 230000010354 integration Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000011152 fibreglass Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000005191 phase separation Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000007790 solid phase Substances 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003933 environmental pollution control Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 235000015816 nutrient absorption Nutrition 0.000 description 1
- 230000033116 oxidation-reduction process Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- 230000005068 transpiration Effects 0.000 description 1
Classifications
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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
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
-
- 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
- C02F3/02—Aerobic processes
-
- 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
-
- 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
- C02F3/301—Aerobic and anaerobic treatment in the same reactor
-
- 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
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Biological Wastes In General (AREA)
- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
Abstract
The rural domestic sewage purification wetland system comprises rural domestic sewage households, conventional septic tanks which are correspondingly connected with each rural domestic sewage householder through sewage pipes, and water outlet pipes which are used for converging each conventional septic tank, wherein the water outlet pipes are connected with an improved air-lift type septic tank, an integrated purifying tank is additionally arranged behind the improved air-lift type septic tank and is discharged into an artificial wetland through a pipeline, and the integrated purifying tank is provided with a backflow pipeline which is connected with the improved air-lift type septic tank, so that the multi-section biochemical treatment effect is realized; the higher concentration of the activated sludge is kept; the purifying tank is not blocked; the collection and summarization of household sewage in all the places are realized, and the household sewage is treated together; the sewage treatment achieves the effect of total nitrogen and total phosphorus first-grade A; the nitrification and denitrification are synchronously realized by utilizing the aerobic activated sludge particles, and the artificial wetland is utilized, so that the wastewater is not required to be manually reprocessed.
Description
Technical Field
The invention belongs to the technical field of sewage treatment and environmental protection, and particularly relates to improvement and upgrade of a process for combined application of a conventional septic tank, an improved air-lift septic tank and an integrated purifying tank in rural sewage treatment.
Background
At present, with the increasing severity of rural domestic pollution, rural sewage treatment is urgent. The conventional design can be divided into two-grid septic tanks or three-grid septic tanks, the conventional septic tanks have a plurality of defects, when the conventional septic tanks are used for sewage treatment in new rural areas, after the pipelines are aged and blocked, activated sludge cannot be supplied to crops for use, and under the condition of pipeline communication, the conventionally adopted two-grid septic tanks or three-grid septic tanks have no denitrification and dephosphorization effects and are directly discharged, so that river pollution is caused.
In addition, the traditional single-purification septic tank treatment technology is easy to generate blockage, so that the effect of total nitrogen and total phosphorus first-grade A cannot be achieved, and a plurality of difficulties are brought to the environmental pollution control in new rural areas of China.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method for realizing multi-section biochemical treatment effect; the higher concentration of the activated sludge is kept; the purifying tank is not blocked; the collection and summarization of household sewage in all the places are realized, and the household sewage is treated together; the sewage treatment achieves the effect of total nitrogen and total phosphorus first-grade A; the nitrification and denitrification are synchronously realized by utilizing the aerobic activated sludge particles, and the rural domestic sewage purification wetland system which does not need to manually reprocess the discharged water is utilized.
In order to achieve the purpose of the invention, the following technical scheme is provided: a rural domestic sewage purification wetland system comprises rural domestic sewage households, conventional septic tanks correspondingly connected with each rural domestic sewage householder through sewage pipes and water outlet pipes converging each conventional septic tank, and is characterized in that the water outlet pipes are connected with an improved gas-lift septic tank, an integrated purification tank is additionally arranged behind the improved gas-lift septic tank and is discharged into an artificial wetland through a pipeline, the integrated purification tank is provided with a backflow pipeline and is connected with the improved gas-lift septic tank, the integrated purification tank comprises a horizontal shell, an inflow port formed at the left side of the horizontal shell and at the top end of the horizontal shell, an outflow port formed at the right side of the horizontal shell and a main partition plate arranged in the horizontal shell, the main partition plate divides the horizontal shell into two chambers from left to right, the left chamber is an anaerobic zone, and the right chamber is an aerobic zone, and is characterized in that the left chamber comprises a tank body arranged at the top end of the improved gas-lift septic tank, an overflow port formed at the bottom end of the tank body is connected with the improved gas-lift septic tank, an overflow port formed at the bottom end of the overflow tank is arranged at the overflow tank, an overflow port formed at the bottom end of the overflow tank is communicated with a first solid-liquid separation zone, a second solid-liquid separation zone and a third solid-liquid separation zone is formed in the solid-liquid separation zone from the first overflow tank to the solid-liquid separation zone and a second solid-liquid separation zone, and a third solid-liquid separation zone is arranged in the solid-solid separation zone, and a solid separation zone is arranged in the solid separation tank, and has a solid separation tank and a solid separation tank is in the solid separation tank and has a solid separation tank and has a solid separation tank; the right chamber is divided into an upper chamber, a middle chamber, a lower chamber and a settling tank by a third partition plate and a fourth partition plate, a sterilizing tank is arranged at a position close to a discharge port of the right chamber, a water inlet is arranged on a tank body of the sterilizing tank and communicated with the near top end of the settling tank, the discharge port is communicated with the sterilizing tank, a fourth overflow port which enables the support flow chamber and the slow support flow chamber to be communicated is arranged at the near top end of the third partition plate, and a water passing channel between the slow support flow chamber and the settling tank is formed by the bottom end of the fourth partition plate and the horizontal shell at intervals; the near top end of the solid-liquid separation three areas is provided with a water outlet communicated with a carrier flow chamber, a quantitative air-lift water inlet device is arranged between the carrier flow chamber and the sludge storage tank, an adjustable air-lift reflux device is arranged between the denitrification device and the slow carrier flow chamber, and the carrier flow chamber and the slow carrier flow chamber are both provided with aerobic aeration devices.
Preferably, the denitrification device comprises a water inlet tank arranged in the solid-liquid separation zone, a filling pipe communicated with the water inlet tank and a water outlet pipe connected with the tail end of the filling pipe, wherein the filling pipe penetrates out of the solid-liquid separation zone and stretches into the near bottom end of the sludge storage tank, the water outlet pipe is perpendicular to the filling pipe, a plurality of water outlets are uniformly formed in the pipe wall of the water outlet pipe, and filling materials are arranged in the filling pipe.
Preferably, an adjustable mixed liquid gas stripping reflux device is arranged between the denitrification device and the slow supporter flow chamber, the adjustable mixed liquid gas stripping reflux device comprises a flow control valve and a mixed liquid gas stripping main pipe extending into the near bottom end of the slow supporter flow chamber, a reflux pipe communicated with the mixed liquid gas stripping main pipe is communicated with the denitrification device water inlet tank, and an observation port is formed in the pipe wall at the upper part of the reflux pipe.
Preferably, the sterilizing tank comprises a sealing shell and a sterilizing sheet quantitative adding device arranged in the sealing shell.
In order to achieve the purpose of the invention, another technical scheme is provided: the rural domestic sewage purification wetland system comprises rural domestic sewage households, conventional septic tanks correspondingly connected with each rural domestic sewage household owner through sewage pipes and water outlet pipes converging each conventional septic tank, and is characterized in that the water outlet pipes are connected with an integrated purification tank, an improved gas-lift septic tank is additionally arranged behind the integrated purification tank, the improved gas-lift septic tank is discharged into an artificial wetland through a water outlet pipeline, the improved gas-lift septic tank is provided with a backflow pipeline and connected with the integrated purification tank, the integrated purification tank comprises a horizontal shell, an inflow port formed at the left side of the horizontal shell and at the top end of the horizontal shell, an outflow port formed at the right side of the horizontal shell and a main partition plate arranged in the horizontal shell, the main partition plate divides the horizontal shell into two chambers from left to right, the left chamber is an anaerobic zone, and the right chamber is an aerobic zone, and is characterized in that the left chamber comprises a tank body arranged at the top end of the integrated purification tank, an overflow port formed at the bottom end of the tank body, an overflow port formed at the bottom end of the overflow tank is connected with the integrated purification tank, an overflow port formed at the bottom end of the overflow tank is formed at the overflow tank, an overflow tank is communicated with a solid-liquid separation zone from the first solid-liquid separation zone to the first solid-liquid separation zone, a solid-liquid separation zone is formed in the first solid-liquid separation zone and a solid-solid separation zone is communicated with a second solid-liquid separation zone, and a solid-liquid separation zone is formed in the solid separation zone, and a solid separation zone is formed in the solid separation zone, and is separated from the solid separation tank from the solid phase separation tank, and is separated by the solid phase separation tank; the right chamber is divided into an upper chamber, a middle chamber, a lower chamber and a settling tank by a third partition plate and a fourth partition plate, a sterilizing tank is arranged at a position close to a discharge port of the right chamber, a water inlet is arranged on a tank body of the sterilizing tank and communicated with the near top end of the settling tank, the discharge port is communicated with the sterilizing tank, a fourth overflow port which enables the support flow chamber and the slow support flow chamber to be communicated is arranged at the near top end of the third partition plate, and a water passing channel between the slow support flow chamber and the settling tank is formed by the bottom end of the fourth partition plate and the horizontal shell at intervals; the near top end of the solid-liquid separation three areas is provided with a water outlet communicated with a carrier flow chamber, a quantitative air-lift water inlet device is arranged between the carrier flow chamber and the sludge storage tank, an adjustable air-lift reflux device is arranged between the denitrification device and the slow carrier flow chamber, and the carrier flow chamber and the slow carrier flow chamber are both provided with aerobic aeration devices.
Preferably, the denitrification device comprises a water inlet tank arranged in the solid-liquid separation zone, a filling pipe communicated with the water inlet tank and a water outlet pipe connected with the tail end of the filling pipe, wherein the filling pipe penetrates out of the solid-liquid separation zone and stretches into the near bottom end of the sludge storage tank, the water outlet pipe is perpendicular to the filling pipe, a plurality of water outlets are uniformly formed in the pipe wall of the water outlet pipe, and filling materials are arranged in the filling pipe.
Preferably, an adjustable mixed liquid gas stripping reflux device is arranged between the denitrification device and the slow supporter flow chamber, the adjustable mixed liquid gas stripping reflux device comprises a flow control valve and a mixed liquid gas stripping main pipe extending into the near bottom end of the slow supporter flow chamber, a reflux pipe communicated with the mixed liquid gas stripping main pipe is communicated with the denitrification device water inlet tank, and an observation port is formed in the pipe wall at the upper part of the reflux pipe.
Preferably, the sterilizing tank comprises a sealing shell and a sterilizing sheet quantitative adding device arranged in the sealing shell.
The invention has the beneficial effects that: the household of the invention is provided with a special conventional septic tank which is connected with the corresponding household through a pipeline, and each conventional septic tank is mutually independent. According to the invention, the sludge treated by each conventional septic tank is connected to one improved air-lift septic tank through a circular or rectangular pipeline, and finally is summarized and connected into an integrated purifying tank, and is treated uniformly in the purifying tank, so that the conventional septic tank, the improved air-lift septic tank and the integrated purifying tank are organically combined, the defects of the prior art are overcome, and the multi-section biochemical treatment effect is realized; the higher concentration of the activated sludge is maintained; the purifying tank is not blocked; the collection and summarization of household sewage in all the places are realized, and the household sewage is treated together; the treatment capacity achieves the effect of total nitrogen and total phosphorus first-order A; the nitrification and denitrification are synchronously realized by utilizing aerobic activated sludge particles; the integrated purifying tank and the improved air-lifting septic tank share one fan, so that the energy consumption is saved, the cost is reduced, the artificial wetland is utilized for self-treatment of drainage, and the sewage discharge is solved while the landscape is increased.
Drawings
Fig. 1 is a schematic diagram of a system in embodiment 1 of the present invention.
Fig. 2 is a schematic view of the improved air-stripping septic tank shown in fig. 1.
Fig. 3 is a schematic structural diagram of the mixed liquid stripping device and the automatic manure stripping device in fig. 2.
Fig. 4 is a schematic view of the rotary flow regulator of fig. 2.
Fig. 5 is a front view of the purge tank of fig. 1.
Fig. 6 is a top view of fig. 5.
Fig. 7 is a cross-sectional view A-A of fig. 6.
FIG. 8 is a schematic diagram of the denitrification device in FIG. 5.
FIG. 9 is a top view of the denitrification device of FIG. 8.
FIG. 10 is a schematic view of the connection between the blower and the stripping device and the aeration zone of FIG. 6.
Fig. 11 is a schematic diagram of a system in embodiment 2 of the present invention.
Fig. 12 is a schematic view of the modified type air-stripping septic tank of example 3.
Description of the embodiments
Example 1: a rural domestic sewage purification wetland system comprises rural domestic sewage households 1, conventional septic tanks 2 correspondingly connected with each rural domestic sewage households 1 through sewage pipes and water outlet pipes converging each conventional septic tank 2, wherein the water outlet pipes are connected with an improved air-lift septic tank 4, an integrated purifying tank 3 is additionally arranged behind the improved air-lift septic tank 4, and the integrated purifying tank 3 is discharged into an artificial wetland 5 through a pipeline. The integrated purifying tank 3 is provided with a return pipeline 6 connected with the improved air-lift septic tank 4.
The improved gas stripping septic tank 4 comprises a horizontal shell 4.1, a water inlet 4.1.1 arranged at the left end of the horizontal shell 4.1, a water outlet 4.1.2 arranged at the right end of the horizontal shell 4.1, two main partition plates 4.2 arranged in the horizontal shell 4.1, wherein the two main partition plates 4.2 divide the horizontal shell 4.1 into three sealed chambers from left to right to respectively form an anaerobic zone 4.3, an aerobic zone 4.4 and a sedimentation zone 4.5, a manure passing port 4.2.1 is arranged at the near top end of the two main partition plates 4.2, the water inlet 4.1.1 and the water outlet 4.1.2 are both positioned at the near top end of the horizontal shell 4.1, a gas stripping automatic manure device 4.6 is arranged in the anaerobic zone 4.3, a mixed liquid gas stripping device 4.7 is arranged in the aerobic zone 4.4, the mixed liquid gas stripping device 4.7 is connected with a main pipe 4.4.6 through a first gas stripping pipeline 4.8 and a second gas pipeline 4.9, the flow rate regulator is connected with a manure suction fan 4.4.6.4.4.4.6, and the flow rate regulator is connected with a main pipe 4.4.4.4.4.4.6, and the bottom end of the aeration device is connected with the main pipe 4.4.4.4.4.4.4.1 and the main pipe 11.4.4.4.1; the mixed liquid stripping device 4.7 comprises a mixed liquid stripping main pipe 4.7.1 extending into the near bottom end of the aerobic zone 4.4, a rotary flow regulator 4.11 connected with the mixed liquid stripping main pipe 4.7.1, and a backflow pipeline 4.7.2 connected with the rotary flow regulator 4.11, wherein the backflow pipeline 4.7.2 extends into the anaerobic zone 4.3 and is provided with a backflow port 4.7.2.1, the backflow pipeline is communicated with the anaerobic zone 4.3, sewage in the aerobic zone 4.4 is enabled to flow back into the anaerobic zone 4.3 for denitrification, and the first stripping pipeline 4.8 and the second stripping pipeline 4.9 are both provided with vertical sections which are coaxially inserted into the excrement stripping main pipe 4.6.1 and the mixed liquid stripping main pipe 4.7.1.
The integrated purifying tank 3 comprises a horizontal shell 3.1, an inflow port 3.1.1 arranged at the left side of the horizontal shell 3.1 and close to the top, a discharge port 3.1.2 arranged at the right side of the horizontal shell 3.1 and close to the top, a main partition plate 3.2 arranged in the horizontal shell 3.1, the main partition plate 3.2 divides the horizontal shell 3.1 from left to right into two chambers, the left chamber 3.3 is an anaerobic zone, the right chamber 3.4 is an aerobic zone, the left chamber 3.3 comprises a solid-liquid separation tank 3.5 arranged at the close to the top, the rest of the space forms a sludge storage tank 3.6, the solid-liquid separation tank 3.5 comprises a tank body 3.5.1 with an open top, a first overflow port 3.5.2 arranged at the close to the top of the tank body 3.5.1, a mud outlet 3.5.3 arranged at the close to the bottom of the tank body 3.5.1, a first partition plate 3.1 is arranged in the tank body 3.5.1, a second partition plate 3.3.2 divides the tank body 3.5.1 into a first solid-liquid separation tank 3.5, and a second solid-liquid separation tank 3.7.1 from the first overflow port 3.7, and a third overflow port 3.3.1 is communicated with the first overflow port 3.3.3.7 and a second overflow port 3.3.3.1, and a third solid-liquid separation zone 3.3.3.7 is communicated with the first overflow port 3.3.1 and a third solid-liquid separation zone 3.3.3.3.3; the right chamber 3.4 is divided into an upper chamber, a middle chamber, a lower chamber and a lower chamber by a third baffle plate and a fourth baffle plate (3.4.1 and 3.4.2), the upper chamber is a carrier flow chamber 3.10, a slow carrier flow chamber 3.11 and a sedimentation tank 3.12 respectively, a disinfection tank 3.13 is arranged at the position, close to a discharge port 3.1.2, of the right chamber 3.4, a water inlet 3.13.3 is arranged on a tank body of the disinfection tank 3.13 and communicated with the near top end of the sedimentation tank 3.12 (namely, a water inlet is formed in a shared wall of the disinfection tank and the sedimentation tank), the discharge port 3.1.2 is communicated with the disinfection tank 3.13, a fourth overflow port 3.4.1.1 which enables the carrier flow chamber 3.10 and the slow carrier flow chamber 3.11 to be communicated is arranged at the near top end of the third baffle plate 3.4.1, and a water passing channel 3.14 between the slow carrier flow chamber 3.11 and the sedimentation tank 3.12 is formed by the bottom end of the fourth baffle plate 3.4.2 and the horizontal casing 3.1 at intervals; the solid-liquid separation three-region 3.9 is provided with a water outlet 3.9.1 near the top end and is communicated with a carrier flow chamber 3.10 (namely, a water outlet 3.9.1 is formed in a main partition plate 3.2 shared by the solid-liquid separation three-region and the carrier flow chamber 3.10, a quantitative gas stripping water inlet device 3.15 is arranged between the carrier flow chamber 3.10 and the sludge storage tank 3.6, the quantitative gas stripping water inlet device 3.15 comprises a flow control valve 3.15.1, a mixed liquid gas stripping water main pipe 3.15.2 extending into the near bottom end of the sludge storage tank 3.6, a water outlet pipe 3.15.3 communicated with the mixed liquid gas stripping water main pipe 3.15.2, and a water outlet pipe 3.15.3 communicated with the carrier flow chamber 3.10.
The denitrification device 3.16 is arranged in the first solid-liquid separation area 3.7 and comprises a water inlet tank 3.16.1 arranged in the first solid-liquid separation area 3.7, a filler pipe 3.16.2 communicated with the water inlet tank 3.16.1 and a water outlet pipe 3.16.3 connected with the tail end of the filler pipe 3.16.2, the filler pipe 3.16.2 penetrates out of the first solid-liquid separation area 3.7 and stretches into the near bottom end of the sludge storage tank 3.6, the water outlet pipe 3.16.3 is perpendicular to the filler pipe 3.16.2, a plurality of water outlets 3.16.4 are uniformly formed in the wall of the water outlet pipe 3.16.3, and fillers 3.16.5 are arranged in the filler pipe 3.16.2.
An adjustable mixed liquid stripping reflux device 3.17 is arranged between the denitrification device 3.16 and the slow supporter flow chamber 3.11, the adjustable mixed liquid stripping reflux device 3.17 comprises a flow control valve 3.17.1, a mixed liquid stripping main pipe 3.17.2 extending into the near bottom end of the slow supporter flow chamber 3.11, a return pipe 3.17.3 communicated with the mixed liquid stripping main pipe 3.17.2, a return pipe 3.17.3 communicated with a denitrification device water inlet tank 3.16.1, and an observation port is formed in the pipe wall at the upper part of the return pipe 3.17.3.
The quantitative air stripping water inlet device 3.15 and the mixed liquid air stripping main pipes (3.15.2 and 3.17.2) of the adjustable mixed liquid air stripping reflux device 3.17 are respectively provided with a pipeline connecting fan 3.18.
The bottoms of the carrier flow chamber 3.10 and the buffer carrier flow chamber 3.11 are respectively provided with an aerobic aeration device, and the aeration quantity of the two aerobic aeration devices is controlled by a two-way control valve. The aeration pipeline 3.19 of the aerobic aeration device is connected with a fan.
The sterilizing tank 3.13 includes a seal housing 3.13.1 and a sterilizing sheet dosing device 3.13.2 mounted in the seal housing 3.13.1.
Example 2: the utility model provides a rural domestic sewage purification wetland system, including rural domestic sewage house owner 1, with every rural domestic sewage house owner 1 through the conventional septic tank 2 that sewage pipe corresponds the connection and with the outlet pipe that every conventional septic tank 2 joined, outlet pipe connection an integration purifying tank 3, add improvement formula air-lift septic tank 4 behind the integration purifying tank 3, improvement formula air-lift septic tank 4 is discharged into constructed wetland 5 through outlet pipe, improvement formula air-lift septic tank 4 is provided with backflow pipeline 6 and connects integration purifying tank 3.
The improved gas stripping septic tank 4 comprises a horizontal shell 4.1, a water inlet 4.1.1 arranged at the left end of the horizontal shell 4.1, a water outlet 4.1.2 arranged at the right end of the horizontal shell 4.1, two main partition plates 4.2 arranged in the horizontal shell 4.1, wherein the two main partition plates 4.2 divide the horizontal shell 4.1 into three sealed chambers from left to right to respectively form an anaerobic zone 4.3, an aerobic zone 4.4 and a sedimentation zone 4.5, a manure passing port 4.2.1 is arranged at the near top end of the two main partition plates 4.2, the water inlet 4.1.1 and the water outlet 4.1.2 are both positioned at the near top end of the horizontal shell 4.1, a gas stripping automatic manure device 4.6 is arranged in the anaerobic zone 4.3, a mixed liquid gas stripping device 4.7 is arranged in the aerobic zone 4.4, the mixed liquid gas stripping device 4.7 is connected with a main pipe 4.4.6 through a first gas stripping pipeline 4.8 and a second gas pipeline 4.9, the flow rate regulator is connected with a manure suction fan 4.4.6.4.4.4.6, and the flow rate regulator is connected with a main pipe 4.4.4.4.4.4.6, and the bottom end of the aeration device is connected with the main pipe 4.4.4.4.4.4.4.1 and the main pipe 11.4.4.4.1; the mixed liquid stripping device 4.7 comprises a mixed liquid stripping main pipe 4.7.1 extending into the near bottom end of the aerobic zone 4.4, a rotary flow regulator 4.11 connected with the mixed liquid stripping main pipe 4.7.1, and a backflow pipeline 4.7.2 connected with the rotary flow regulator 4.11, wherein the backflow pipeline 4.7.2 extends into the anaerobic zone 4.3 and is provided with a backflow port 4.7.2.1, the backflow pipeline is communicated with the anaerobic zone 4.3, sewage in the aerobic zone 4.4 is enabled to flow back into the anaerobic zone 4.3 for denitrification, and the first stripping pipeline 4.8 and the second stripping pipeline 4.9 are both provided with vertical sections which are coaxially inserted into the excrement stripping main pipe 4.6.1 and the mixed liquid stripping main pipe 4.7.1.
The integrated purifying tank 3 comprises a horizontal shell 3.1, an inflow port 3.1.1 arranged at the left side of the horizontal shell 3.1 and close to the top, a discharge port 3.1.2 arranged at the right side of the horizontal shell 3.1 and close to the top, a main partition plate 3.2 arranged in the horizontal shell 3.1, the main partition plate 3.2 divides the horizontal shell 3.1 from left to right into two chambers, the left chamber 3.3 is an anaerobic zone, the right chamber 3.4 is an aerobic zone, the left chamber 3.3 comprises a solid-liquid separation tank 3.5 arranged at the close to the top, the rest of the space forms a sludge storage tank 3.6, the solid-liquid separation tank 3.5 comprises a tank body 3.5.1 with an open top, a first overflow port 3.5.2 arranged at the close to the top of the tank body 3.5.1, a mud outlet 3.5.3 arranged at the close to the bottom of the tank body 3.5.1, a first partition plate 3.1 is arranged in the tank body 3.5.1, a second partition plate 3.3.2 divides the tank body 3.5.1 into a first solid-liquid separation tank 3.5, and a second solid-liquid separation tank 3.7.1 from the first overflow port 3.7, and a third overflow port 3.3.1 is communicated with the first overflow port 3.3.3.7 and a second overflow port 3.3.3.1, and a third solid-liquid separation zone 3.3.3.7 is communicated with the first overflow port 3.3.1 and a third solid-liquid separation zone 3.3.3.3.3; the right chamber 3.4 is divided into an upper chamber, a middle chamber, a lower chamber and a lower chamber by a third baffle plate and a fourth baffle plate (3.4.1 and 3.4.2), the upper chamber is a carrier flow chamber 3.10, a slow carrier flow chamber 3.11 and a sedimentation tank 3.12 respectively, a disinfection tank 3.13 is arranged at the position, close to a discharge port 3.1.2, of the right chamber 3.4, a water inlet 3.13.3 is arranged on a tank body of the disinfection tank 3.13 and communicated with the near top end of the sedimentation tank 3.12 (namely, a water inlet is formed in a shared wall of the disinfection tank and the sedimentation tank), the discharge port 3.1.2 is communicated with the disinfection tank 3.13, a fourth overflow port 3.4.1.1 which enables the carrier flow chamber 3.10 and the slow carrier flow chamber 3.11 to be communicated is arranged at the near top end of the third baffle plate 3.4.1, and a water passing channel 3.14 between the slow carrier flow chamber 3.11 and the sedimentation tank 3.12 is formed by the bottom end of the fourth baffle plate 3.4.2 and the horizontal casing 3.1 at intervals; the solid-liquid separation three-region 3.9 is provided with a water outlet 3.9.1 near the top end and is communicated with a carrier flow chamber 3.10 (namely, a water outlet 3.9.1 is formed in a main partition plate 3.2 shared by the solid-liquid separation three-region and the carrier flow chamber 3.10, a quantitative gas stripping water inlet device 3.15 is arranged between the carrier flow chamber 3.10 and the sludge storage tank 3.6, the quantitative gas stripping water inlet device 3.15 comprises a flow control valve 3.15.1, a mixed liquid gas stripping water main pipe 3.15.2 extending into the near bottom end of the sludge storage tank 3.6, a water outlet pipe 3.15.3 communicated with the mixed liquid gas stripping water main pipe 3.15.2, and a water outlet pipe 3.15.3 communicated with the carrier flow chamber 3.10.
The denitrification device 3.16 is arranged in the first solid-liquid separation area 3.7 and comprises a water inlet tank 3.16.1 arranged in the first solid-liquid separation area 3.7, a filler pipe 3.16.2 communicated with the water inlet tank 3.16.1 and a water outlet pipe 3.16.3 connected with the tail end of the filler pipe 3.16.2, the filler pipe 3.16.2 penetrates out of the first solid-liquid separation area 3.7 and stretches into the near bottom end of the sludge storage tank 3.6, the water outlet pipe 3.16.3 is perpendicular to the filler pipe 3.16.2, a plurality of water outlets 3.16.4 are uniformly formed in the wall of the water outlet pipe 3.16.3, and fillers 3.16.5 are arranged in the filler pipe 3.16.2.
An adjustable mixed liquid stripping reflux device 3.17 is arranged between the denitrification device 3.16 and the slow supporter flow chamber 3.11, the adjustable mixed liquid stripping reflux device 3.17 comprises a flow control valve 3.17.1, a mixed liquid stripping main pipe 3.17.2 extending into the near bottom end of the slow supporter flow chamber 3.11, a return pipe 3.17.3 communicated with the mixed liquid stripping main pipe 3.17.2, a return pipe 3.17.3 communicated with a denitrification device water inlet tank 3.16.1, and an observation port is formed in the pipe wall at the upper part of the return pipe 3.17.3.
The quantitative air stripping water inlet device 3.15 and the mixed liquid air stripping main pipes (3.15.2 and 3.17.2) of the adjustable mixed liquid air stripping reflux device 3.17 are respectively provided with a pipeline connecting fan 3.18.
The bottoms of the carrier flow chamber 3.10 and the buffer carrier flow chamber 3.11 are respectively provided with an aerobic aeration device, and the aeration quantity of the two aerobic aeration devices is controlled by a two-way control valve. The aeration pipeline 3.19 of the aerobic aeration device is connected with a fan.
The sterilizing tank 3.13 includes a seal housing 3.13.1 and a sterilizing sheet dosing device 3.13.2 mounted in the seal housing 3.13.1.
Example 3: referring to embodiment 1 or 2, 1 piece of auxiliary baffle plate 4.14 is arranged in the anaerobic zone 4.3 of the improved gas stripping septic tank 4, the anaerobic zone 4.3 is divided into an anaerobic zone I4.15 and an anaerobic zone II 4.16, the upper near top ends of the auxiliary baffle plates 4.14 are respectively provided with a manure passing opening 4.14.1, the gas stripping automatic manure outlet device 4.6 is arranged in the anaerobic zone II 4.16, and the reflux pipeline 4.7.2 of the mixed liquid stripping device 4.7 extends into the anaerobic zone I4.15 and the anaerobic zone II 4.16 and is respectively provided with a reflux opening 4.7.2.1.
In the above embodiment 1, 2 or 3, the rotary flow regulator 4.11 includes a top sealed liner tube 4.11.1, a rotary sleeve tube 4.11.2 sleeved on the liner tube 4.11.1, a connecting joint 4.11.3 disposed at the bottom end of the liner tube 4.11.1, a water outlet 4.11.1.1 (the connecting joint may be a hoop) provided on the side wall of the liner tube 4.11.1, and an adjusting hole 4.11.2.1 provided on the side wall of the rotary sleeve tube 4.11.2 corresponding to the water outlet 4.11.1.1, and the reflux amount is adjusted by the overlap ratio of the adjusting hole 4.11.2.1 and the water outlet 4.11.1.1 on the rotary sleeve tube 4.11.2.
In the above embodiment 1, 2 or 3, the main and auxiliary partition boards (4.2, 4.14) of the improved air stripping septic tank 4 are provided with downward bent pipes on the manure passing ports, the top end of the anaerobic zone 4.3 is provided with an air outlet 4.3.1, and the top end of the horizontal shell is provided with an observation manhole.
In the above examples 1, 2 or 3, the suspended filler was charged into the aerobic zone 4.4.
In the above embodiments 1, 2 or 3, the horizontal housing 4.1 of the modified air-stripping septic tank 4 is assembled in a male-female mold or drawer type.
In the above embodiments 1, 2 or 3, the horizontal housing 4.1 of the modified air-stripping septic tank 4 is injection molded.
In the above embodiment 1 or 2 or 3, the horizontal housing 4.1 of the modified air-stripping septic tank 4 is provided with a water level gauge or a float gauge.
In the above embodiment 1 or 2 or 3, the fan 4.10 of the improved air-stripping septic tank 4 passes through the first air-stripping pipeline 4.8, the second air-stripping pipeline 4.9 and the aeration pipeline 4.11, wherein the first air-stripping pipeline 4.8 and the second air-stripping pipeline 4.9 are connected with the air suction port of the fan 4.10, the aeration pipeline 4.11 is connected with the air outlet of the fan 4.10, so that not only an aerobic aeration function is realized, but also mixed liquid air-stripping reflux can be realized, the mixed liquid air-stripping reflux is realized into the reflux pipeline 4.7.2, then the mixed liquid air-stripping reflux is performed through the reflux pipeline 4.7.2, the reflux pipeline 4.7.2 water outlet is provided with the rotary flow regulator 4.11, the reflux quantity can be regulated, sewage flows into the sedimentation zone 4.5 after being treated in the anaerobic zone 4.3 and the aerobic zone 4.4, static sedimentation and mud water separation are performed, and finally the sewage is discharged.
In the above embodiment 1, 2 or 3, the material of the main partition 3.2 of the integrated purification tank 3 may be glass fiber reinforced plastic. The fourth diaphragm 3.4.2 may be glass fiber reinforced plastic. The third partition 3.4.1 between the slow carrier flow chamber 3.11 and the carrier flow chamber 3.10 may be integrally injection molded. The slow supporter flow chamber 3.11 and the supporter flow chamber 3.10 are provided with the supporter, and the number of the supporter in the slow supporter flow chamber 3.11 is larger than that in the supporter flow chamber 3.10. The horizontal housing 3.1 of the integrated purification tank 3 can be formed by integral injection molding. The left and right sides of the top end of the horizontal shell 3.1 can be respectively provided with an observation manhole.
The artificial wetland is a technology for treating sewage and sludge by utilizing the physical, chemical and biological triple synergistic effects of soil, artificial medium, plants and microorganisms in the process of flowing sewage and sludge along a certain direction by manually constructing and controlling the ground similar to the swamp, and controlling the sewage and sludge to be dosed on the constructed wetland. The action mechanism comprises adsorption, detention, filtration, oxidation reduction, precipitation, microbial decomposition, conversion, plant shielding, residue accumulation, transpiration moisture and nutrient absorption and the action of various animals. The constructed wetland is a comprehensive ecological system.
Claims (6)
1. The rural domestic sewage purification wetland system comprises rural domestic sewage households, conventional septic tanks correspondingly connected with each rural domestic sewage household main through sewage pipes and water outlet pipes converging each conventional septic tank, and is characterized in that the water outlet pipes are connected with an improved gas-lift septic tank, an integrated purification tank is additionally arranged behind the improved gas-lift septic tank and is discharged into an artificial wetland through a pipeline, the integrated purification tank is provided with a backflow pipeline and is connected with the improved gas-lift septic tank, the integrated purification tank comprises a horizontal shell, an inflow port formed at the left side of the horizontal shell and a discharge port formed at the right side of the horizontal shell and a main partition plate arranged in the horizontal shell, the horizontal shell is divided into two chambers from left to right by the main partition plate, the left chamber is an anaerobic zone, the right chamber is an aerobic zone, the left chamber comprises a solid-liquid separation tank arranged at the near top end, the rest space forms a sludge storage tank, the solid-liquid separation tank comprises a tank body with an open top, an overflow port formed at the near top end of the tank body, an overflow port formed at the bottom of the tank body is connected with the first overflow port, a solid-liquid separation zone is formed at the left end of the overflow tank, and a solid-liquid separation zone is communicated with a second solid-liquid separation zone from the first overflow port and a third solid-liquid separation zone, and a second solid-liquid separation zone is formed in the first overflow zone and a second solid-liquid separation zone is communicated with the solid-liquid separation zone, and a third solid-liquid separation zone is arranged in the solid-separation zone, and is communicated with the solid-liquid separation zone, and the solid-separation zone is separated by the solid tank; the right chamber is divided into an upper chamber, a middle chamber, a lower chamber and a settling tank by a third partition plate and a fourth partition plate, a sterilizing tank is arranged at a position close to a discharge port of the right chamber, a water inlet is arranged on a tank body of the sterilizing tank and communicated with the near top end of the settling tank, the discharge port is communicated with the sterilizing tank, a fourth overflow port which enables the support flow chamber and the slow support flow chamber to be communicated is arranged at the near top end of the third partition plate, and a water channel between the slow support flow chamber and the settling tank is formed by the bottom end of the fourth partition plate and the horizontal shell at intervals; the solid-liquid separation three-zone near top sets up delivery port intercommunication supporter flow chamber, be provided with quantitative air lift water inlet unit between supporter flow chamber and the mud storage groove, be provided with adjustable air lift reflux unit between denitrification facility and the slow supporter flow chamber, supporter flow chamber and slow supporter flow chamber all are provided with good oxygen aeration equipment, be provided with denitrification facility in the solid-liquid separation one-zone including arranging into the basin in the solid-liquid separation one-zone, with the filler pipe of going into the water tank intercommunication and with filler pipe end-to-end connection's outlet pipe, the filler pipe wears out from the solid-liquid separation one-zone and stretches into the mud storage groove near bottom, the outlet pipe sets up perpendicularly with the filler pipe, evenly offer a plurality of delivery ports on the outlet pipe wall, be provided with the filler in the filler pipe.
2. The rural domestic sewage purification wetland system according to claim 1, wherein an adjustable mixed liquid stripping reflux device is arranged between the denitrification device and the slow-support body flow chamber, the adjustable mixed liquid stripping reflux device comprises a flow control valve, a mixed liquid stripping main pipe extending into the near bottom end of the slow-support body flow chamber, a reflux pipe communicated with the mixed liquid stripping main pipe, the reflux pipe is communicated to the denitrification device water inlet tank, and an observation port is formed in the pipe wall at the upper part of the reflux pipe.
3. The rural domestic sewage purification wetland system according to claim 1, wherein the disinfection tank comprises a sealed shell and a disinfection sheet quantitative feeding device arranged in the sealed shell.
4. The rural domestic sewage purification wetland system comprises rural domestic sewage households, conventional septic tanks correspondingly connected with each rural domestic sewage household main through sewage pipes and water outlet pipes converging each conventional septic tank, and is characterized in that the water outlet pipes are connected with an integrated purification tank, an improved gas-stripping septic tank is additionally arranged behind the integrated purification tank, the improved gas-stripping septic tank is discharged into an artificial wetland through a water outlet pipeline, the improved gas-stripping septic tank is provided with a backflow pipeline and is connected with the integrated purification tank, the integrated purification tank comprises a horizontal shell, an inflow port arranged at the left side near top end of the horizontal shell, an outflow port arranged at the right side near top end of the horizontal shell, a main partition plate arranged in the horizontal shell, the main partition plate divides the horizontal shell into two chambers from left to right, the left chamber is an anaerobic zone, and the right chamber is an aerobic zone; the right chamber is divided into an upper chamber, a middle chamber, a lower chamber and a settling tank by a third partition plate and a fourth partition plate, a sterilizing tank is arranged at a position close to a discharge port of the right chamber, a water inlet is arranged on a tank body of the sterilizing tank and communicated with the near top end of the settling tank, the discharge port is communicated with the sterilizing tank, a fourth overflow port which enables the support flow chamber and the slow support flow chamber to be communicated is arranged at the near top end of the third partition plate, and a water passing channel between the slow support flow chamber and the settling tank is formed by the bottom end of the fourth partition plate and the horizontal shell at intervals; the solid-liquid separation three-zone near top sets up delivery port intercommunication supporter flow chamber, be provided with quantitative air lift water inlet unit between supporter flow chamber and the mud storage groove, be provided with adjustable air lift reflux unit between denitrification facility and the slow supporter flow chamber, supporter flow chamber and slow supporter flow chamber all are provided with good oxygen aeration equipment, be provided with denitrification facility in the solid-liquid separation one-zone including arranging into basin in the solid-liquid separation one-zone, with the filler pipe of going into the water tank intercommunication and with filler pipe end-to-end connection's outlet pipe, the filler pipe wears out from the solid-liquid separation one-zone and stretches into the mud storage groove near bottom, the outlet pipe sets up with filler pipe is perpendicular, evenly offered a plurality of delivery ports on the outlet pipe wall, be provided with the filler in the filler pipe.
5. The rural domestic sewage purification wetland system according to claim 4, wherein an adjustable mixed liquid stripping reflux device is arranged between the denitrification device and the slow-support body flow chamber, the adjustable mixed liquid stripping reflux device comprises a flow control valve, a mixed liquid stripping main pipe extending into the near bottom end of the slow-support body flow chamber, a reflux pipe communicated with the mixed liquid stripping main pipe, the reflux pipe is communicated to the denitrification device water inlet tank, and an observation port is formed in the pipe wall at the upper part of the reflux pipe.
6. The rural domestic sewage purification wetland system according to claim 4, wherein the disinfection tank comprises a sealed shell and a disinfection sheet quantitative feeding device arranged in the sealed shell.
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| CN201711342872.6A CN107814468B (en) | 2017-12-14 | 2017-12-14 | Rural domestic sewage purification wetland system |
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| CN201711342872.6A CN107814468B (en) | 2017-12-14 | 2017-12-14 | Rural domestic sewage purification wetland system |
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