CN110950494A - Integrated equipment for distributed domestic sewage treatment - Google Patents
Integrated equipment for distributed domestic sewage treatment Download PDFInfo
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- CN110950494A CN110950494A CN201911232564.7A CN201911232564A CN110950494A CN 110950494 A CN110950494 A CN 110950494A CN 201911232564 A CN201911232564 A CN 201911232564A CN 110950494 A CN110950494 A CN 110950494A
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- 239000010865 sewage Substances 0.000 title claims abstract description 76
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- 238000005192 partition Methods 0.000 claims abstract description 49
- 239000010802 sludge Substances 0.000 claims abstract description 30
- 238000001556 precipitation Methods 0.000 claims abstract description 17
- 230000000694 effects Effects 0.000 claims abstract description 12
- 239000000945 filler Substances 0.000 claims description 58
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- 244000005700 microbiome Species 0.000 claims description 35
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 29
- 238000010992 reflux Methods 0.000 claims description 22
- 238000004062 sedimentation Methods 0.000 claims description 21
- 238000011001 backwashing Methods 0.000 claims description 19
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 15
- 229910052760 oxygen Inorganic materials 0.000 claims description 15
- 239000001301 oxygen Substances 0.000 claims description 15
- 239000000126 substance Substances 0.000 claims description 15
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 13
- 229910052698 phosphorus Inorganic materials 0.000 claims description 13
- 239000011574 phosphorus Substances 0.000 claims description 13
- 239000000969 carrier Substances 0.000 claims description 12
- 241000894006 Bacteria Species 0.000 claims description 11
- 230000001546 nitrifying effect Effects 0.000 claims description 11
- 125000001477 organic nitrogen group Chemical group 0.000 claims description 11
- MMDJDBSEMBIJBB-UHFFFAOYSA-N [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] Chemical compound [O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O.[NH6+3] MMDJDBSEMBIJBB-UHFFFAOYSA-N 0.000 claims description 10
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- 239000010962 carbon steel Substances 0.000 claims description 9
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 8
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- JVMRPSJZNHXORP-UHFFFAOYSA-N ON=O.ON=O.ON=O.N Chemical compound ON=O.ON=O.ON=O.N JVMRPSJZNHXORP-UHFFFAOYSA-N 0.000 claims description 7
- 238000006396 nitration reaction Methods 0.000 claims description 7
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- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 3
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- 229910019142 PO4 Inorganic materials 0.000 claims description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 2
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Images
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
- C02F1/30—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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
-
- 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
- C02F2101/105—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
-
- 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
-
- 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
- C02F2303/14—Maintenance of water treatment installations
-
- 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
Abstract
The invention discloses integrated equipment for distributed domestic sewage treatment, which comprises a box type main body structure, wherein a water inlet and a water outlet are arranged outside the integrated equipment, the inside of the integrated equipment is divided into 5 areas by a first partition plate, a second partition plate, a third partition plate and a fourth partition plate, and the 5 areas are an anoxic groove, a first aerobic groove, a second aerobic groove, a dephosphorization precipitation groove and an electric control equipment room in sequence. The integrated device has stable treatment effect, small residual sludge amount and low operation cost, can be remotely operated, maintained and regulated, and can be produced in an integrated and large-scale manner; the integrated equipment is controlled to run through a PLC (programmable logic controller) electric cabinet in the electric control equipment room, the PLC electric cabinet uploads running parameters to the cloud platform, and remote control is carried out through the mobile phone client and the computer webpage synchronously.
Description
Technical Field
The invention relates to the technical field of sewage treatment equipment, in particular to integrated equipment for distributed domestic sewage treatment.
Background
Distributed sewage treatment is relative to centralized treatment of sewage, and mainly means that sewage is subjected to in-situ treatment so as to reach the discharge standard. The municipal sewage treatment system is a centralized treatment system, and sewage in a defined sewage discharge range is collected and then conveyed to a sewage treatment plant through a pipe network system for unified centralized treatment. In the centralized treatment mode, the investment of municipal pipe networks accounts for 60-70% of the investment of sewage treatment, if a certain area is remote and the amount of generated sewage is small, the investment of the pipe network part is possibly overlarge if the sewage is connected into the pipe network, and the sewage can be treated independently, and compared with the large-scale centralized treatment, the treatment of the sewage is distributed treatment. For example, in vast rural areas of China at present, the economic development degree is relatively lagged behind, but the problem of water pollution is urgent, and distributed treatment is a good choice. For example, tourist attractions and villa vacation areas are far away from cities, and the water quality and water quantity change is large, so that the method is more suitable for using a distributed sewage treatment mode.
The existing distributed sewage treatment mode mainly comprises an artificial wetland, an ecological ditch, integrated treatment equipment, a combined mode of the integrated treatment equipment and the ecological treatment and the like, and can meet the requirements of pollutant discharge standards of urban sewage treatment plants under the conditions of stable water quality and water quantity and operation and maintenance of specially-assigned persons. But combines the main characteristics of the dispersed sewage: (1) the sewage amount is small, the quantity of the sewage varies from several tons to several hundred tons every day, the water quality and the water quantity change is large (2), the possibility of maintenance by a professional is small, the operation and maintenance difficulty is large (3), the excess sludge disposal and the outward transportation cost are high. The existing distributed sewage treatment mode has the following defects: a special person is needed to operate and maintain; excess sludge is produced by a biological method, and the sludge needs to be transported out periodically; the operation cost is higher; the quality of the effluent water is difficult to detect in real time, and the operation parameters can not be adjusted in time according to the water quality condition. These shortcomings result in the inability of some decentralized wastewater treatment facilities to operate stably for long periods of time, even the absence of centralized personnel during shutdown (4), large distribution ranges, large permanent construction investment, and high operating costs.
Disclosure of Invention
The invention aims to solve the problems in the prior art, provides an innovative scheme and provides integrated equipment which is used for distributed domestic sewage treatment, has stable treatment effect, small residual sludge amount and low operation cost, can be remotely operated, maintained and regulated and can be produced in an integrated and large-scale mode.
In order to solve the problems, the invention adopts the following scheme: the utility model provides an integration equipment for distributed domestic sewage handles which characterized in that: the integrated device is internally divided into 5 areas by a first partition plate, a second partition plate, a third partition plate and a fourth partition plate, wherein the 5 areas are an anoxic groove, a first aerobic groove, a second aerobic groove, a dephosphorization precipitation groove and an electric control device room in sequence; the anoxic tank is communicated with the first aerobic tank, the first aerobic tank is communicated with the second aerobic tank, and the second aerobic tank is communicated with the dephosphorization precipitation tank; the anoxic tank is used for denitrifying to remove organic nitrogen and degrade COD; the first aerobic tank is normally used for nitration reaction, and denitrification reaction is carried out when the denitrification effect is poor; the second aerobic tank is used for converting organic nitrogen into ammonia nitrogen by nitrifying bacteria, aerobic bacteria and microorganisms, and then oxidizing the ammonia nitrogen into nitrite nitrogen and nitrate nitrogen so as to facilitate subsequent further denitrification and remove COD and BOD in an aerobic state; the dephosphorization sedimentation tank is used for filtering the effluent of the second aerobic tank by using dephosphorization filler after self-sedimentation is carried out to remove SS; the electric control equipment room is used for controlling water inlet and outlet among the anoxic tank, the first aerobic tank, the second aerobic tank and the dephosphorization sedimentation tank, and performing ultraviolet disinfection and water quality detection on the water outlet of the dephosphorization sedimentation tank.
Further, according to the integrated equipment for distributed domestic sewage treatment of the design scheme, the integrated equipment is characterized in that a filler support is arranged in the anoxic tank and used for suspending biological filler, and the influent water and the reflux nitrifying liquid enter through a pipeline erected above the anoxic tank and form a stirring state in the anoxic tank to cause an anoxic environment; denitrifying bacteria suspended on the biological filler convert nitrate nitrogen into nitrogen; the facultative microorganisms decompose organic nitrogen in the sewage into ammonia nitrogen, and simultaneously, part of organic matters and ammonia nitrogen are utilized to synthesize new cell matters, so that part of COD is degraded.
Further, according to the integrated equipment for distributed domestic sewage treatment of the design scheme, a filler support is arranged in the first aerobic tank and used for hanging biological fillers; a microporous aeration head is arranged at the bottom of the first aerobic tank and is used for aerobic aeration; under normal conditions, aeration is started to carry out aerobic reaction, nitrifying bacteria carry out nitration reaction, organic nitrogen is firstly converted into ammonia nitrogen and then oxidized into nitrite nitrogen and nitrate nitrogen, so that subsequent further denitrification is facilitated, and organic substances such as COD (chemical oxygen demand), BOD (biochemical oxygen demand) and the like are removed in an aerobic state; when the denitrification effect is not good, the aeration is closed to form an anoxic zone, and the denitrification effect is exerted.
Further, according to the design scheme, the integrated equipment for distributed domestic sewage treatment is characterized in that immobilized microorganism carriers are added into the second aerobic tank, the immobilized microorganism carriers are prepared from high-molecular materials of polyvinyl alcohol and sodium alginate embedded composite aerobic bacteria and composite nitrobacteria, and the adding amount of the immobilized microorganism carriers accounts for 8-40% of the effective volume of the second aerobic tank. The nitrifying bacteria, the aerobic bacteria and the microorganisms convert organic nitrogen into ammonia nitrogen, and then the ammonia nitrogen is oxidized into nitrite nitrogen and nitrate nitrogen, so that the subsequent further denitrification is facilitated, and organic substances such as COD (chemical oxygen demand), BOD (biochemical oxygen demand) and the like are removed in an aerobic state.
Further, according to the design scheme, the integrated equipment for distributed domestic sewage treatment is characterized in that inverted V-shaped baffles which are continuously distributed are arranged at the bottom of the second aerobic tank, and a perforated pipe aeration mode is adopted. When the immobilized microorganism carrier sinks to the bottom, the immobilized microorganism carrier can fall along the edge of the tank, and when the immobilized microorganism carrier descends to the position of the aeration pipe, the immobilized microorganism carrier rises again under the action of aeration, so that a rising and falling fluidized state is formed, and the immobilized microorganism carrier cannot be deposited to the bottom of a second aerobic tank.
Further, according to the above design scheme, the integrated equipment for distributed domestic sewage treatment is characterized in that the upper part of the second aerobic tank is provided with an intensive steel wire mesh as an interception mesh of immobilized microorganism carriers, and the steel wire mesh can be detached. In the aeration process, the immobilized microorganism carriers are intercepted and limited in the second aerobic tank by the intercepting net. The immobilized microorganism carrier can not block a pipeline along with the outflow of water flow from the tank body, so that the utilization rate of the immobilized microorganism carrier is improved, and when the immobilized microorganism carrier is replaced, only the upper interception net needs to be detached, and the immobilized microorganism carrier is directly poured into the tank.
Further, according to the design scheme, the integrated equipment for distributed domestic sewage treatment is characterized in that the dephosphorization sedimentation tank comprises a sludge hopper, dephosphorization fillers, a central cylinder, a filler supporting layer, a water collecting tank and an overflow weir; the effluent of the second aerobic tank is guided to the lower part of the dephosphorization sedimentation tank through the central cylinder, the sewage flows in the dephosphorization sedimentation tank from bottom to top, and suspended matters are settled in a sludge hopper by virtue of gravity, so that the effluent SS is reduced; the upper part of the sludge hopper of the dephosphorization precipitation tank is provided with a dephosphorization filler, the lower part of the dephosphorization filler is a filler supporting layer, and sewage passes through the dephosphorization filler layer and then is collected to the water collection tank by the overflow weir; the outlet water of the water collecting tank is connected to an ultraviolet sterilizer positioned in the electric control equipment room through a water outlet pipeline, and is discharged out of the integrated equipment after being subjected to ultraviolet sterilization.
Further, according to the design scheme, the integrated equipment for distributed domestic sewage treatment is characterized in that a box body type main body structure of the integrated equipment is made of stainless steel or anti-corrosion carbon steel plates through welding; a manhole is arranged at the top of the integrated equipment for maintenance, and a double-open sliding door is arranged on the right side surface of the integrated equipment; the first partition plate, the second partition plate, the third partition plate and the fourth partition plate are made of stainless steel or anticorrosive carbon steel materials, the height of the first partition plate, the height of the second partition plate and the height of the third partition plate are 250-500 mm lower than the total height of the equipment, the first partition plate, the second partition plate and the height of the third partition plate are used for dividing a water storage area in the integrated equipment into an anoxic tank, an aerobic tank I, an aerobic tank II and a dephosphorization precipitation tank, the lower part of the first partition plate is 250-500 mm used for erecting internal pipelines, and all the pipelines are arranged in the integrated equipment; flow guide holes with the side length of 100-500 mm are formed in the lower portion of the first partition plate, the upper portions of the second partition plate and the third partition plate and are used for communicating the grooves; the height of the fourth clapboard is the total height of the device and is used for separating a water storage area in the integrated device from the electric control device, and a pipeline is perforated and laid at the corresponding position of the fourth clapboard; the electric control equipment room is used for placing a reflux pump, a fan, an ultraviolet sterilizer, a back-washing dosing tank, a PLC control cabinet, an online water quality detector, and pipelines such as a water inlet pipe, a water outlet pipe, an emptying pipe, a reflux pipe, an aeration main pipe, a back-washing pipe and the like. The bottom parts of the anoxic tank, the first aerobic tank, the second aerobic tank and the dephosphorization sedimentation tank are provided with emptying pipe orifices.
Further, according to the above design scheme, the integrated equipment for distributed domestic sewage treatment is characterized in that the filler supports are welded by angle steel, and the distance between the filler supports is 100-150 mm.
Furthermore, according to the design scheme, the integrated equipment for distributed domestic sewage treatment is characterized in that the distance between the phosphorus removal filler and the sludge bucket is 0.5-1.0 m; the dephosphorization filler is one or more of calcium salt, iron salt, aluminum salt and magnesium salt or resin with phosphate adsorption function.
Further, according to the design scheme, the integrated equipment for distributed domestic sewage treatment is characterized in that a sludge collecting floral tube is arranged at a position, 100-150 mm away from the bottom of the equipment, below the sludge hopper, of which the tube length is the width of the phosphorus removal settling tank, floral holes with the diameter of phi 10-phi 20 are formed in the sludge collecting floral tube, and because the anoxic tank and the aerobic tank are respectively used for suspension filler and suspension filler, no residual sludge is generated basically, and the collecting tube is mainly used for collecting and refluxing the nitrified liquid.
Further, according to above-mentioned design the integrated equipment for distributed domestic sewage handles, its characterized in that, the PLC switch board is equipped with touch screen display, and it includes six control system: a water inlet and outlet quantity and quality system, a fan frequency adjusting system, a reflux ratio adjusting system, a backwashing control system, a liquid level control system and an equipment running state control system; the data signals of the six control systems can be uploaded to a cloud platform and remotely controlled through a mobile phone client or a computer webpage; the water inlet and outlet quantity and water quality control system can transmit the water inlet and outlet quantity through a PLC (programmable logic controller), and transmit COD (chemical oxygen demand), ammonia nitrogen and orthophosphate indexes of inlet water and outlet water according to the data of an online water quality detector; the fan frequency adjusting system automatically adjusts the air quantity of the fan according to the COD and ammonia nitrogen indexes of inlet water; the reflux ratio adjusting system automatically adjusts the reflux amount of the reflux pump according to the ammonia nitrogen index of the inlet water; the back washing control system determines back washing time and frequency according to the quality of the discharged orthophosphate; the liquid level control system and the equipment operation state control system can detect the water level of each tank in the integrated equipment and the operation state of each electric equipment, alarm in time when a fault occurs and upload a signal to a mobile phone client or a computer webpage.
1. The invention has the following technical effects: the invention provides integrated equipment for distributed domestic sewage treatment, which adopts a container body made of stainless steel or anticorrosive carbon steel plates through welding as a main body structure, the inside of the equipment is separated by a stainless steel or anticorrosive carbon steel partition plate, all pipelines are arranged inside the equipment, and only one water inlet and one water outlet are reserved outside the equipment. The appearance is beautiful, the device can be directly placed on the ground without digging a foundation pit, supporting and draining water and burying the ground, and the civil engineering cost is saved. The exterior of the device can be made into a spray appearance. The container body is taken as a main body structure, and is beneficial to large-scale production.
2. The invention provides integrated equipment for distributed domestic sewage treatment, wherein sewage sequentially passes through an anoxic tank, a first aerobic tank, a second aerobic tank and a phosphorus removal precipitation tank, and is finally discharged after being subjected to ultraviolet disinfection. The inlet water and the return nitrification liquid respectively enter from the upper part of the front end of the anoxic tank, a baffle plate connected with the first aerobic tank of the anoxic tank is provided with a diversion hole at the lower end, a baffle plate of the first aerobic tank and the second aerobic tank is provided with a diversion hole at the upper end, the sewage is guided to the lower end of the second aerobic tank by a diversion pipe, and the diversion holes are arranged at the upper ends of the baffle plates of the second aerobic tank and the dephosphorization sedimentation tank. The sewage flows in the integrated equipment at the longest distance, so that the retention time of biochemical reaction is ensured, and the effluent effect is stable.
3. The invention provides integrated equipment for distributed domestic sewage treatment, wherein a filler frame is welded and suspended in an aerobic tank I, biological fillers are suspended, a microporous aeration head is arranged at the bottom of the aerobic tank I, aeration can be selectively opened or closed, and the aerobic tank is used as the aerobic tank when the aerobic tank is opened for nitration reaction. When the water quality changes along with seasons, the aeration equipment is closed and used as an anoxic tank to play a role of denitrification, and the removal rate of total nitrogen is ensured under the condition of water quality change.
4. The invention provides integrated equipment for distributed domestic sewage treatment, wherein biological fillers are suspended in an anoxic tank, and water inlet and return nitrification liquid enter the anoxic tank through a pipeline erected above the anoxic tank to form a stirring state in the anoxic tank, so that an anoxic environment is caused, a stirring device is not required to be arranged, and the operation cost is saved.
5. The invention provides integrated equipment for distributed domestic sewage treatment, wherein biological fillers are suspended in an anoxic tank and an aerobic tank, an immobilized microorganism carrier prepared by embedding composite aerobic bacteria and composite nitrifying bacteria in high polymer materials of polyvinyl alcohol and sodium alginate is added in an aerobic tank II, and the nitrifying bacteria, the aerobic bacteria and the microorganisms convert organic nitrogen into ammonia nitrogen and then oxidize the ammonia nitrogen into nitrite nitrogen and nitrate nitrogen, so that the subsequent further denitrification is facilitated, and organic substances such as COD (chemical oxygen demand), BOD (biochemical oxygen demand) and the like are removed in an aerobic state.
6. The invention provides integrated equipment for distributed domestic sewage treatment. The dephosphorization filler is arranged at a position 0.5-1.0 m above the sludge hopper, and a filler bearing layer is arranged below the filler. The effluent of the second aerobic tank is guided to the lower part of the dephosphorization precipitation tank through the central cylinder, the sewage flows in the dephosphorization precipitation tank from bottom to top, the suspended matters are precipitated in the sludge hopper by virtue of gravity, the phosphorus is adsorbed by the dephosphorization filler, and the backwashing of the dephosphorization filler is completed by controlling a backwashing dosing device by a PLC control system. And the PLC judges whether to start the backwashing dosing device or not according to the data fed back by the effluent quality online detector. And a phosphorus removal device and a precipitation tank are not required to be additionally arranged.
7. The invention provides an integrated device for distributed domestic sewage treatment, wherein an electric control device is integrated with a main reaction tank and is not separately arranged, and the integrated device is beneficial to saving occupied area and pipeline materials. The electric control equipment is positioned at the rightmost side of the integrated equipment and can be directly accessed through the double-opening sliding door at the right side of the container. The simple ladder that accesss to the manhole sets up on electrical equipment room lateral wall, and when integrated equipment normal operating, the door of electrical equipment room is locked, prevents that irrelevant personnel from climbing at will, guarantees safety.
8. The invention provides integrated equipment for distributed domestic sewage treatment.A PLC control cabinet displays on a touch screen and can display the water quantity and the water quality of inlet and outlet water; adjusting the air quantity of the fan according to the COD (chemical oxygen demand) and ammonia nitrogen concentration of inlet water; adjusting the amount of backflow water of the backflow pump according to the concentration of the ammonia nitrogen in the inlet water; determining backwashing time and frequency according to the concentration of orthophosphate in the effluent; and the water level of each groove in the integrated equipment and the running state of each electric equipment are displayed, and the integrated equipment can give an alarm and upload a signal to a mobile phone client or a computer webpage when a fault occurs. All data signals can be uploaded to the cloud platform, and remote control is carried out through a mobile phone client or a computer webpage.
Drawings
Fig. 1 is a front view of the structure of an integrated apparatus according to an embodiment of the present invention.
FIG. 2 is a plan view of a duct of an integrated apparatus according to an embodiment of the present invention.
Fig. 3 is a cross-sectional view taken along line a-a of fig. 2 in accordance with the present invention.
FIG. 4 is a cross-sectional view taken along line B-B of FIG. 2 in accordance with the present invention;
fig. 5 is a cross-sectional view taken along line C-C of fig. 2 in accordance with the present invention.
Wherein, 1-an anoxic tank, 2-an aerobic tank, 3-a second aerobic tank, 4-a dephosphorization precipitation tank, 5-an electronic control equipment room, 6-a filler bracket, 7-biological filler, 8-V baffle plates, 9-a sludge hopper, 10-dephosphorization filler, 11-a water collecting tank, 12-an anoxic tank diversion hole, 13-a first aerobic tank diversion hole, 14-a nitration liquid return pipe, 15-a water inlet pipe, 16-a second aerobic tank vent pipe, 17-an anoxic tank and a first aerobic tank vent pipe, 18-a dephosphorization precipitation tank collecting pipe, 19-a second aerobic tank aeration pipe, 20-a first aerobic tank aeration pipe, 21-a water outlet pipe, 22-a second aerobic tank, 23-a first aerobic tank and 24-a dephosphorization precipitation tank central cylinder, 25-reflux pump, 26-blower, 27-ultraviolet sterilizer, 28-online water quality detector, 29-backwashing device, 30-electric control equipment room door, 31-total water inlet, 32-total water outlet, 33-PLC control cabinet, 34-carrier interception net.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
The integrated equipment for distributed domestic sewage treatment, disclosed by the invention, comprises an anticorrosive carbon steel container body with the thickness of 8mm, the length of the container body is 8.0m, the width of the container body is 2.5m, and the height of the container body is 3.0m, as shown in figures 1 and 2. The container is divided into 5 grooves along the length direction of the container by 4 pieces of anticorrosive carbon steel partition plates with the heights of 2.75m, 2.75m, 2.75m and 3.0m, wherein the 5 grooves are respectively an anoxic groove 1, a first aerobic groove 2, a second aerobic groove 3, a dephosphorization precipitation groove 4 and an electric control equipment room 5.
The lower ends of the partition boards of the anoxic tank 1 and the first aerobic tank 2 are provided with 200 x 200mm12 diversion holes. The upper ends of the partition boards of the first aerobic tank 2 and the second aerobic tank 3 are provided with 200 x 200mm13 diversion holes, and a diversion pipe 23 is arranged for diverting the effluent of the first aerobic tank 2 to the lower end of the second aerobic tank 3. The second aerobic tank 3 is connected with the dephosphorization sedimentation tank 4 through a second aerobic tank water outlet pipe 22. The 4 th partition plate is used for partitioning a water storage area in the integrated equipment and an electric control equipment room 5, and a pipeline is perforated and laid at the corresponding position of the partition plate. An anoxic tank and a first aerobic tank vent pipe 17 are arranged at the position of 150mm at the bottom of the partition board of the first aerobic tank 2 and the second aerobic tank 3, and a second aerobic tank vent pipe 16 is arranged at the position of 150mm at the bottom of the partition board of the second aerobic tank 3 and the dephosphorization sedimentation tank 4.
Two single filler supports 6 with the length of 1.0m, the width of 1.0m and the height of 2.0m are welded in the anoxic tank 1 by angle steel and used for suspending biological fillers 7, and the suspension distance of the biological fillers 7 is 150 mm. The water inlet pipe 15 and the nitrifying liquid return pipe 14 are erected on the partition board of the anoxic tank 1 and the first aerobic tank 2, and the inlet water and the return nitrifying liquid enter the front end of the anoxic tank to form a stirring state in the anoxic tank, so that an anoxic environment is formed. Denitrifying bacteria suspended on the biofilm carrier convert nitrate nitrogen into nitrogen. The facultative microorganisms decompose organic nitrogen in the sewage into ammonia nitrogen, and simultaneously, part of organic matters and ammonia nitrogen are utilized to synthesize new cell matters, so that part of COD is degraded.
The interior of the first aerobic tank 2 is welded into two single filler supports 6 with the length of 1.0m, the width of 1.0m and the height of 2.0m by using angle steel, and the filler supports are used for suspending biological fillers 7, and the suspension distance of the biological fillers 7 is 150 mm. The bottom of the aeration pipe is provided with a first aerobic tank aeration pipe 20, and the aeration pipe is provided with a microporous aeration head for aerobic aeration. Under normal conditions, aeration is started to carry out aerobic reaction, nitrifying bacteria carry out nitration reaction, organic nitrogen is firstly converted into ammonia nitrogen and then oxidized into nitrite nitrogen and nitrate nitrogen, so that subsequent further denitrification is facilitated, and organic substances such as COD (chemical oxygen demand), BOD (biochemical oxygen demand) and the like are removed in an aerobic state. When the denitrification effect is not good, the aeration is closed to form an anoxic zone, and the denitrification effect is exerted.
The bottom of the second aerobic tank 3 is provided with an inverted V-shaped baffle 8 and an aeration pipe 19 of the second aerobic tank, which are continuously distributed, and the aeration pipe is provided with a microporous aeration head for aerobic aeration. Microorganism carriers prepared by embedding composite aerobic bacteria and composite nitrobacteria are added into the second aerobic tank according to 30% of the volume of the second aerobic tank, and the immobilized microorganism carriers fall along the tank edge when sinking to the bottom and rise again under the action of aeration when falling to the position of the aeration pipe, so that a rising and falling fluidized state is formed. The carrier interception net 34 intercepts and limits the immobilized carrier in the second aerobic tank, and the immobilized carrier cannot block the pipe along with the water flow flowing out of the tank body. Nitrifying bacteria, aerobic bacteria and microorganisms in the immobilized microorganism carrier convert organic nitrogen into ammonia nitrogen, and then the ammonia nitrogen is oxidized into nitrite nitrogen and nitrate nitrogen, so that subsequent further denitrification is facilitated, and organic substances such as COD (chemical oxygen demand), BOD (biochemical oxygen demand) and the like are removed in an aerobic state.
The dephosphorization sedimentation tank 4 comprises a sludge hopper 9, a dephosphorization filler 10, a central cylinder 24, a filler supporting layer, a water collecting tank 11 and an overflow weir. The effluent of the second aerobic tank 3 is guided to the lower part of the dephosphorization sedimentation tank through the central cylinder 24, the sewage flows from bottom to top in the dephosphorization sedimentation tank 4, and suspended matters are settled in a sludge hopper by virtue of gravity, so that the effluent SS is reduced. A phosphorus removal (preferably phosphorus removal resin) filler 10 is arranged at a position 0.5m above a sludge hopper 9 in the phosphorus removal precipitation tank 4, and a filler bearing layer is arranged below the phosphorus removal filler 10. The sewage is collected to a water collecting tank 11 by an overflow weir after passing through a dephosphorization filler 10 layer. The outlet water of the water collecting tank 11 is connected to the ultraviolet sterilizer 27 positioned on the electric control equipment room 5 through the outlet pipe 21, and is discharged out of the integrated equipment through the main water outlet 32 positioned on the side wall of the electric control equipment room 5 after being sterilized by ultraviolet.
A dephosphorization sedimentation tank collecting pipe 18 is arranged at a position 100mm away from the bottom of the device below a sludge hopper 9, the pipe length is the width of the dephosphorization sedimentation tank 4, a flower hole with the diameter of phi 20 is formed in the pipe, as the anoxic tank 1, the first aerobic tank 2 and the second aerobic tank 3 are respectively used for suspension packing and suspension packing, basically no residual sludge is generated, and the dephosphorization sedimentation tank collecting pipe 18 is mainly used for collecting and refluxing the nitrified liquid.
The electrical control equipment room 5 is located at the rightmost side of the integrated equipment and can be directly accessed through the electrical control equipment room door 30 at the right side of the container. Set up simple and easy cat ladder on 5 lateral walls of electrical equipment room for access to electrical equipment room top manhole, when integrated equipment normal operating, the door of electrical equipment room is locked, prevents that irrelevant personnel from climbing at will.
The electric control equipment room 5 is used for placing pipelines such as a reflux pump 25, a fan 26, an ultraviolet sterilizer 27, a backwashing dosing tank 29, a PLC control cabinet 33, an online water quality detector 28, a water inlet pipe 15, a water outlet pipe 21, a second aerobic tank vent pipe 16, an anoxic tank, a first aerobic tank vent pipe 17, a reflux pipe 14, an aeration main pipe, a backwashing pipe and the like.
The PLC control cabinet 33 is displayed by a touch screen, the water inlet and outlet amount is transmitted through PLC, and COD, ammonia nitrogen and orthophosphate indexes of inlet water and outlet water are transmitted according to the data of the on-line water quality detector 28. And automatically adjusting the air quantity of the fan 26 according to the COD and ammonia nitrogen indexes of the inlet water. According to the ammonia nitrogen index of the inlet water, the reflux quantity of the reflux pump 25 is automatically adjusted. And determining the backwashing time and frequency according to the indexes of the orthophosphate of the effluent. And simultaneously detecting the water level of each groove in the integrated equipment and the running state of each electric equipment. Data signals of six control systems, such as a water inlet and outlet quantity and water quality system, a fan frequency adjusting system, a reflux ratio adjusting system, a backwashing control system, a liquid level control system, an equipment running state control system and the like, are uploaded to a cloud platform and are remotely controlled through a mobile phone client and a computer webpage.
The embodiment shows that the technical scheme of the invention adopts container type integrated equipment, is convenient to move and suitable for rural areas with less population and dispersive property, and simultaneously the aerobic tank I can give consideration to nitration reaction, so that the adaptability is very strong, and the device is suitable for most of China. The integrated equipment for distributed domestic sewage treatment provided by the invention realizes unattended operation, and can be operated and maintained through a mobile phone client and a computer webpage. The removal of ammonia nitrogen, COD, total phosphorus, the arrangement of electrical control equipment room, the arrangement of pipeline concentrate on inside an 8mm thick anticorrosive carbon steel container body, and only a water inlet and a delivery port are stayed to the equipment outside, have realized distributed sewage treatment's integration, and can the large-scale production. The combined use of the suspended filler and the suspended filler reduces the generation of excess sludge. The structure in the tank is flexible and variable, and seasonal changes of distributed sewage quality can be coped with. By adopting the integrated equipment for distributed domestic sewage treatment provided by the invention, the effluent can reach the first-class A discharge standard of pollutant discharge standard of urban sewage treatment plants.
The present invention is not limited to the specific embodiments and applications described above, which are intended to be illustrative, instructional and not limiting. Those skilled in the art, having the benefit of this disclosure, may effect numerous modifications thereto without departing from the scope of the invention as defined by the appended claims.
Claims (12)
1. The utility model provides an integration equipment for distributed domestic sewage handles which characterized in that: the integrated equipment is of a box body type main body structure, a water inlet and a water outlet are formed in the exterior of the integrated equipment, 5 regions are separated into the interior of the integrated equipment through a first partition plate, a second partition plate, a third partition plate and a fourth partition plate, and the integrated equipment is composed of an anoxic groove, a first aerobic groove, a second aerobic groove, a dephosphorization precipitation groove and an electric control equipment room in sequence.
2. The integrated equipment for distributed domestic sewage treatment according to claim 1, wherein the anoxic tank is internally provided with a filler support for suspending biological filler, and the influent water and the return nitrification liquid enter through a pipeline erected above the anoxic tank to form a stirring state in the anoxic tank, so as to create an anoxic environment; denitrifying bacteria suspended on the biological filler convert nitrate nitrogen into nitrogen; the facultative microorganisms decompose organic nitrogen in the sewage into ammonia nitrogen, and simultaneously, part of organic matters and ammonia nitrogen are utilized to synthesize new cell matters, so that part of COD is degraded.
3. The integrated equipment for distributed domestic sewage treatment according to claim 1, wherein a filler support is arranged in the first aerobic tank for hanging biological fillers; a microporous aeration head is arranged at the bottom of the first aerobic tank and is used for aerobic aeration; under normal conditions, aeration is started to carry out aerobic reaction, nitrifying bacteria carry out nitration reaction, organic nitrogen is firstly converted into ammonia nitrogen and then oxidized into nitrite nitrogen and nitrate nitrogen, so that subsequent further denitrification is facilitated, and organic substances such as COD (chemical oxygen demand), BOD (biochemical oxygen demand) and the like are removed in an aerobic state; when the denitrification effect is not good, the aeration is closed to form an anoxic zone, and the denitrification effect is exerted.
4. The integrated equipment for distributed domestic sewage treatment according to claim 1, wherein immobilized microorganism carriers are added into the second aerobic tank, the immobilized microorganism carriers are made of high molecular materials of polyvinyl alcohol and sodium alginate embedded composite aerobic bacteria and composite nitrobacteria, and the adding amount of the immobilized microorganism carriers accounts for 8-40% of the effective volume of the second aerobic tank.
5. The integrated equipment for distributed domestic sewage treatment according to claim 4, wherein the bottom of the second aerobic tank is provided with continuously distributed inverted V-shaped baffles, and a perforated pipe aeration mode is adopted; when the immobilized microorganism carrier sinks to the bottom, the immobilized microorganism carrier can fall along the edge of the tank, and when the immobilized microorganism carrier descends to the position of the aeration pipe, the immobilized microorganism carrier rises again under the action of aeration, so that a rising and falling fluidized state is formed, and the immobilized microorganism carrier cannot be deposited to the bottom of a second aerobic tank.
6. The integrated equipment for distributed domestic sewage treatment according to claim 1, wherein the upper part of the second aerobic tank is provided with a dense steel wire mesh as an interception mesh of immobilized microorganism carriers, and the steel wire mesh can be detached; in the aeration process, the immobilized microorganism carriers are intercepted and limited in the second aerobic tank by the intercepting net.
7. The integrated apparatus for decentralized domestic sewage treatment according to claim 1, wherein the phosphorus removal settling tank comprises a sludge hopper, a phosphorus removal packing, a central cylinder, a packing support layer, a water collection tank, an overflow weir; the effluent of the second aerobic tank is guided to the lower part of the dephosphorization sedimentation tank through the central cylinder, the sewage flows in the dephosphorization sedimentation tank from bottom to top, and suspended matters are settled in a sludge hopper by virtue of gravity, so that the effluent SS is reduced; the upper part of a sludge hopper in the dephosphorization precipitation tank is provided with a dephosphorization filler, the lower part of the dephosphorization filler is a filler supporting layer, and sewage can only pass through the dephosphorization filler layer and then is collected to the water collection tank through the overflow weir; the outlet water of the water collecting tank is connected to an ultraviolet sterilizer positioned in the electric control equipment room through a water outlet pipeline, and is discharged out of the integrated equipment after being subjected to ultraviolet sterilization.
8. The integrated equipment for distributed domestic sewage treatment according to claim 1, wherein the box body type main structure of the integrated equipment is made of stainless steel or corrosion-resistant carbon steel plates by welding; a manhole is arranged at the top of the integrated equipment for maintenance, and a double-open sliding door is arranged on the right side surface of the integrated equipment; the first partition plate, the second partition plate, the third partition plate and the fourth partition plate are made of stainless steel or anticorrosive carbon steel materials, the height of the first partition plate, the height of the second partition plate and the height of the third partition plate are 250-500 mm lower than the total height of the equipment, the first partition plate, the second partition plate and the height of the third partition plate are used for dividing a water storage area in the integrated equipment into an anoxic tank, an aerobic tank I, an aerobic tank II and a dephosphorization precipitation tank, the lower part of the first partition plate is 250-500 mm used for erecting internal pipelines, and all the pipelines are arranged in the integrated equipment; flow guide holes with the side length of 100-500 mm are formed in the lower portion of the first partition plate, the upper portions of the second partition plate and the third partition plate and are used for communicating the grooves; the height of the fourth clapboard is the total height of the device and is used for separating a water storage area in the integrated device from the electric control device, and a pipeline is perforated and laid at the corresponding position of the fourth clapboard; the electric control equipment room is used for placing a reflux pump, a fan, an ultraviolet sterilizer, a backwashing dosing tank, a PLC control cabinet, an online water quality detector, and pipelines such as a water inlet pipe, a water outlet pipe, an emptying pipe, a reflux pipe, an aeration main pipe, a backwashing pipe and the like; the bottom of the anoxic tank, the first aerobic tank, the second aerobic tank and the dephosphorization sedimentation tank are provided with emptying pipe orifices which are communicated with the emptying pipe and used for emptying each tank.
9. The integrated equipment for distributed domestic sewage treatment according to claim 2 or 3, wherein the filler supports are welded by angle steel, and the distance between the filler supports is 100-150 mm.
10. The integrated equipment for distributed domestic sewage treatment according to claim 7, wherein the distance between the phosphorus removal filler and the sludge bucket is 0.5-1.0 m; the dephosphorization filler is one or more of calcium salt, iron salt, aluminum salt and magnesium salt or resin with phosphate adsorption function.
11. The integrated equipment for distributed domestic sewage treatment according to claim 7, wherein a sludge collection perforated pipe is arranged at a position 100-150 mm away from the bottom of the equipment below the sludge hopper, the length of the sludge collection perforated pipe is the width of the dephosphorization sedimentation tank, perforated holes with the diameter of phi 10-phi 20 are formed in the sludge collection perforated pipe, and the collection pipe is used for collecting and refluxing the nitrified liquid.
12. The integrated equipment for decentralized domestic sewage treatment according to claim 8, wherein the PLC control cabinet is provided with a touch screen display comprising six control systems: a water inlet and outlet quantity and quality system, a fan frequency adjusting system, a reflux ratio adjusting system, a backwashing control system, a liquid level control system and an equipment running state control system; the data signals of the six control systems can be uploaded to a cloud platform and remotely controlled through a mobile phone client or a computer webpage; the water inlet and outlet quantity and water quality control system can transmit the water inlet and outlet quantity through a PLC (programmable logic controller), and transmit COD (chemical oxygen demand), ammonia nitrogen and orthophosphate indexes of inlet water and outlet water according to the data of an online water quality detector; the fan frequency adjusting system automatically adjusts the air quantity of the fan according to the COD and ammonia nitrogen indexes of inlet water; the reflux ratio adjusting system automatically adjusts the reflux amount of the reflux pump according to the ammonia nitrogen index of the inlet water; the back washing control system determines back washing time and frequency according to the quality of the discharged orthophosphate; the liquid level control system and the equipment operation state control system can detect the water level of each tank in the integrated equipment and the operation state of each electric equipment, alarm in time when a fault occurs and upload a signal to a mobile phone client or a computer webpage.
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| CN201911232564.7A CN110950494A (en) | 2019-12-05 | 2019-12-05 | Integrated equipment for distributed domestic sewage treatment |
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| CN201911232564.7A CN110950494A (en) | 2019-12-05 | 2019-12-05 | Integrated equipment for distributed domestic sewage treatment |
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| CN110950494A true CN110950494A (en) | 2020-04-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022083802A1 (en) * | 2021-01-11 | 2022-04-28 | 凌志环保股份有限公司 | Household purifier for treating rural domestic sewage |
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