CN108147540B - MBR integrated domestic sewage treatment equipment - Google Patents
MBR integrated domestic sewage treatment equipment Download PDFInfo
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- CN108147540B CN108147540B CN201810143653.3A CN201810143653A CN108147540B CN 108147540 B CN108147540 B CN 108147540B CN 201810143653 A CN201810143653 A CN 201810143653A CN 108147540 B CN108147540 B CN 108147540B
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- 239000010865 sewage Substances 0.000 title claims abstract description 54
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 157
- 230000020477 pH reduction Effects 0.000 claims abstract description 39
- 230000007062 hydrolysis Effects 0.000 claims abstract description 30
- 238000006460 hydrolysis reaction Methods 0.000 claims abstract description 30
- 230000003647 oxidation Effects 0.000 claims abstract description 29
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 29
- 238000003860 storage Methods 0.000 claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 claims abstract description 20
- 239000012528 membrane Substances 0.000 claims description 25
- 238000005192 partition Methods 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 10
- 238000000746 purification Methods 0.000 claims description 10
- 230000003301 hydrolyzing effect Effects 0.000 claims description 9
- 238000010992 reflux Methods 0.000 claims description 8
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 241000894006 Bacteria Species 0.000 claims description 4
- 241001148470 aerobic bacillus Species 0.000 claims description 4
- 241001148471 unidentified anaerobic bacterium Species 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 6
- 230000010354 integration Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 4
- 238000011001 backwashing Methods 0.000 description 7
- 238000005273 aeration Methods 0.000 description 5
- 239000003344 environmental pollutant Substances 0.000 description 4
- 231100000719 pollutant Toxicity 0.000 description 4
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 3
- 229910052698 phosphorus Inorganic materials 0.000 description 3
- 239000011574 phosphorus Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012510 hollow fiber Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 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
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/30—Aerobic and anaerobic 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
- C02F3/02—Aerobic processes
- C02F3/12—Activated sludge processes
- C02F3/1236—Particular type of activated sludge installations
- C02F3/1268—Membrane bioreactor systems
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- 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
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- 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
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
-
- 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
- C02F2209/14—NH3-N
-
- 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
- C02F2209/18—PO4-P
-
- 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
- C02F2303/16—Regeneration of sorbents, filters
-
- 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)
- Microbiology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Biological Treatment Of Waste Water (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses MBR integrated domestic sewage treatment equipment, which comprises a tank body, a tank body and a control box, wherein the tank body is divided into a water Jie Suanhua bin, a contact oxidation bin and an MBR bin; the hydrolysis acidification bin is communicated with the contact oxidation bin; the contact oxidation bin is communicated with the MBR bin; the MBR bin is communicated with the hydrolysis acidification bin through a return pipe, and the return pipe is provided with a return pump; the box body is fixedly arranged on the side wall of the tank body, and the box body is divided into an equipment chamber, a first observation channel, a second observation channel, a third observation channel and a water storage bin; the water storage bin is communicated with a first pipe and a backwash pipe, a water suction pump is arranged on the first pipe, the backwash pump is arranged on the backwash pipe, the MBR bin is provided with a water production pipe, and the first pipe, the backwash pipe and the water production pipe are communicated through a three-way electromagnetic valve. Compared with the prior art, the invention has small occupied area and can move the placed position at will; the structure integration level is high, the management and maintenance are convenient, and the purifying effect is good.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to MBR integrated domestic sewage treatment equipment.
Background
At present, the traditional sewage treatment facilities are all civil engineering facilities, all reaction chambers are arranged underground and are wholly immovable, the occupied area of each reaction chamber is large, the flexibility is low, the management and maintenance are difficult, the use cost is high, and the sewage purification effect is to be improved.
Disclosure of Invention
The invention provides MBR integrated domestic sewage treatment equipment for solving the defects of the prior art, which has small occupied area and can move the placed position at will; the structure integration level is high, the management and maintenance are convenient, and the purifying effect is good. The specific technical scheme is as follows:
The invention discloses MBR integrated domestic sewage treatment equipment, which comprises a tank body and a box body, wherein the tank body is separated into a water Jie Suanhua bin, a contact oxidation bin and an MBR bin through a partition plate; the hydrolysis acidification bin is communicated with a water inlet pipe, and a water inlet pump is arranged on the water inlet pipe; a first self-flow hole is arranged on a partition plate between the hydrolysis acidification bin and the contact oxidation bin; a second self-flow hole is arranged on a partition plate between the contact oxidation bin and the MBR bin; the height of the first self-flowing hole is higher than that of the second self-flowing hole; the MBR bin is communicated with the hydrolysis acidification bin through a return pipe, the return pipe is provided with a return pump, and the return pump is fixed on the side wall of the tank body; the box body is fixedly arranged on the side wall of the tank body, the box body is divided into a first chamber, an equipment chamber and a first observation channel which are transversely arranged in sequence through a partition plate, and the first chamber is divided into a second observation channel, a third observation channel and a water storage bin through the partition plate; the water storage bin is communicated with a first pipe and a backwash pipe, a water pump is arranged on the first pipe, a backwash pump is arranged on the backwash pipe, the MBR bin is provided with a water production pipe, and the first pipe, the backwash pipe and the water production pipe are communicated through a three-way electromagnetic valve; the first observation channel is communicated with the MBR bin, the second observation channel is communicated with the hydrolysis acidification bin, and the third observation channel is communicated with the contact oxidation bin; the backwash pump and the water suction pump are all positioned in the equipment room, the control box and the air blower are arranged in the equipment room, the air blower is respectively communicated with the bottom of the contact oxidation bin and the bottom of the MBR bin through pipelines, and the water suction pump, the backwash pump, the water inlet pump, the backwash pump, the air blower and the three-way electromagnetic valve are controlled by the control box.
Further, a water level sensor for sensing the water level is arranged in the hydrolysis acidification bin, and the water level sensor is electrically connected with the control box.
Further, an ultraviolet lamp is arranged in the water storage bin.
Further, the equipment further comprises a pedal for a worker to stand, the pedal is fixed on the side wall of the box body, a fence is arranged on the pedal, a ladder stand is arranged on one side, far away from the box body, of the pedal, the ladder stand extends downwards, and the middle section of the ladder stand is fixedly connected with the side wall of the tank body through a connecting rod.
Further, a reinforcing rib is arranged between the lower side surface of the pedal and the tank body.
Further, a supporting seat is arranged at the bottom of the tank body.
Further, the using method of the device comprises the following working steps:
s1, injecting sewage into a hydrolysis acidification bin, and purifying the sewage by anaerobic bacteria and facultative bacteria;
S2, the treated sewage enters a contact oxidation bin from a first self-flowing hole, the contact oxidation bin is aerated, and the sewage is purified by aerobic bacteria;
S3, the treated sewage enters an MBR bin from the second self-flow hole, the sewage is aerated into the MBR bin, and the sewage is filtered and purified by an MBR membrane;
s4, enabling the first pipe to be communicated with the water production pipe, starting the water suction pump, pumping sewage into the water storage bin, starting the reflux pump, and refluxing mud water at the bottom of the MBR bin to the hydrolysis acidification bin to finish the sewage purification process.
Further, a water level sensor for sensing the water level is arranged in the hydrolysis acidification bin and is electrically connected with the control box; in the S1 step, when the water level is lower than a preset lower limit value, a water level sensor feeds back a signal to a control box, the control box controls a water inlet pump to start, and sewage is injected into a hydrolysis acidification bin; when the water level is higher than a preset upper limit value, the water level sensor feeds back a signal to the control box, and the control box controls the water inlet pump to be closed.
Further, in the working process of the device, the three-way electromagnetic valve is periodically changed into a passage state, so that the water production pipe is periodically changed between a state of being communicated with the first pipe and a state of being communicated with the backwashing pipe, when the water production pipe is communicated with the first pipe, the water suction pump is periodically started, the backwashing pump is closed, and when the first pipe is communicated with the backwashing pipe, the water suction pump is closed, and the backwashing pump is started.
Further, the water producing pipe is changed from the state of being communicated with the first pipe to the state of being communicated with the backwashing pipe every six hours, the state is kept for three minutes, and then the water producing pipe is changed from the state of being communicated with the backwashing pipe to the state of being communicated with the first pipe; when the water producing pipe is in a state of being communicated with the first pipe, the water suction pump is turned off every six minutes to eight minutes, the duration of the off state is two minutes, and after two minutes, the water suction pump is turned on.
The invention has the beneficial effects that: the working bin bodies are integrated in the tank body or the box body, so that the structure integration level is high, the occupied area is small, and the manufacturing cost is low; the whole equipment can move, the placement position can be changed at any time, and the flexibility is high; the invention applies the MBR purification technology to the domestic sewage treatment field, and has good purification effect; the purification process is controlled by the control unit, the automation degree is high, and the use cost is low.
Drawings
FIG. 1 is a schematic top view of an embodiment of the present invention;
FIG. 2 is a schematic side view of an embodiment of the present invention;
FIG. 3 is a schematic diagram of a front view structure according to an embodiment of the present invention;
Fig. 4 is a schematic view of the internal structure of the can according to an embodiment of the present invention.
The drawing is marked: tank 100, water intake pump 101, reflux pump 102, water intake pipe 103, reflux pipe 104, hydrolytic acidification tank 105, contact oxidation tank 106, MBR tank 107, first self-flow hole 108, second self-flow hole 109, tank 200, first chamber 201, equipment chamber 202, first observation channel 203, water storage tank 204, second observation channel 205, backwash pump 206, water suction pump 207, three-way electromagnetic valve 208, backwash pipe 209, control box 210, blower 211, third observation channel 212, first pipe 213, pedal 300, ladder 301, rail 302, reinforcing rib 303, and support base 400.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
The invention will be described in further detail below with reference to the drawings by means of specific embodiments. Please refer to the accompanying drawings.
The invention discloses MBR integrated domestic sewage treatment equipment, which comprises a tank body 100 and a tank body 200, wherein the tank body 100 is preferably in a horizontal cylindrical shape, and the tank body 100 is internally divided into a hydrolytic acidification tank 105, a contact oxidation tank 106 and an MBR tank 107 which are transversely and sequentially arranged through a partition plate; the hydrolysis acidification bin 105 is communicated with a water inlet pipe 103, the water inlet pipe 103 introduces sewage from an external water tank, the water inlet pipe 103 is provided with a water inlet pump 101, and the base of the water inlet pump 101 is fixed on the upper circumferential side wall of the tank body 100; a first self-flow hole 108 is arranged on a partition plate between the hydrolysis acidification bin 105 and the contact oxidation bin 106; a second self-flow hole 109 is arranged on a partition plate between the contact oxidation bin 106 and the MBR bin 107; the height of the first self-flowing hole 108 is higher than that of the second self-flowing hole 109, so that sewage can flow into the MBR bin 107 automatically; the MBR bin 107 is communicated with the hydrolysis acidification bin 105 through a return pipe 104, the return pipe 104 is provided with a return pump 102, the base of the return pump 102 is fixed on the side wall of the tank body 100, the return pipe 104 is also fixed on the side wall of the tank body 100 and is arranged along the length direction of the tank body 100, and one end of the return pipe 104 positioned in the MBR bin 107 extends to the bottom of the MBR bin 107; the bottom side wall of the box 200 is fixedly arranged on the side wall of the tank 100, preferably, the box 200 is in a cuboid shape, the box 200 is not provided with a cover plate, the bottom side wall of the box 200 is fixedly arranged on the upper circumferential side wall of the tank 100 in a welding mode, the transverse axis of the box 200 is vertically projected to coincide with the axis of the tank 100, and the length of the box 200 is two thirds of the length of the tank 100. The box body 200 is divided into a first chamber 201, an equipment chamber 202 and a first observation channel 203 which are sequentially and transversely arranged through a partition plate, the first chamber 201 is internally divided into a second observation channel 205, a third observation channel 212 and a water storage bin 204 through the partition plate, and as shown in fig. 1, the transverse length of the water storage bin 204 is equal to the sum of the port width of the second observation channel 205 and the port width of the third observation channel 212; the water storage bin 204 is communicated with a first pipe 213 and a backwash pipe 209, a water pump 207 is installed on the first pipe 213, a backwash pump 206 is installed on the backwash pipe 209, the MBR bin 107 is communicated with a water production pipe, specifically, a membrane frame is arranged in the MBR bin 107, a plurality of MBR membrane components are hung on the membrane frame, the MBR membrane components are tubular with a plurality of hollow fiber membranes, the end part of the water production pipe extends into the MBR bin 107 and is communicated with a water collecting pipe on the membrane frame, sewage passes through a membrane wall under the action of the water pump 207, enters the fiber membrane pipe and enters the water storage bin 204 along the water collecting pipe, the water production pipe and the first pipe 213. Because MBR membrane and MBR membrane frame are prior art, do not make the detailed description here to structure and theory of operation of both. The end part of the first pipe 213 far away from the water storage bin 204, the end part of the backwashing pipe 209 far away from the water storage bin 204 and the end part of the water production pipe far away from the MBR bin 107 are communicated through a three-way electromagnetic valve 208; the first observation channel 203 penetrates through the MBR bin 107, the second observation channel 205 penetrates through the hydrolytic acidification bin 105, the third observation channel 212 penetrates through the contact oxidation bin 106, the conditions in the MBR bin 107, the hydrolytic acidification bin 105 and the contact oxidation bin 106 can be observed through the first observation channel 203, the second observation channel 205 and the third observation channel 212 respectively, and the conditions can enter the MBR bin 107, the hydrolytic acidification bin 105 and the contact oxidation bin 106 respectively from the first observation channel 203, the second observation channel 205 and the third observation channel 212 for maintenance and management; the base of the backwash pump 206 and the base of the water pump 207 are fixed in the equipment room 202 by screws, and a control box 210 and a blower 211 are placed in the equipment room 202, and the control box 210 is preferably a PLC control box 210. The air blower 211 is respectively communicated with the bottom of the contact oxidation bin 106 and the bottom of the MBR bin 107 through pipelines so as to perform aeration treatment on the contact oxidation bin 106 and the MBR bin 107. The water pump 207, the backwash pump 206, the water inlet pump 101, the backwash pump 102, the blower 211 and the three-way electromagnetic valve 208 are all controlled by a control box 210. The working bin bodies are integrated in the tank body 100 or the box body 200, so that the structure integration level is high, the occupied area is small, and the manufacturing cost is low; the whole equipment can move, the placement position can be changed at any time, and the flexibility is high; the invention applies the MBR purification technology to the domestic sewage treatment field, and has good purification effect; the purification process is controlled by the control unit, the automation degree is high, and the use cost is low.
Further, the inner wall of the hydrolytic acidification tank 105 is provided with a water level sensor (not shown in the figure) for sensing the water level, preferably, the water level sensor is a contact type water level sensor. The water level sensor is electrically connected with the control box 210, and can sense the water level change in the hydrolytic acidification bin 105 through the water level sensor, so that the control box 210 can make corresponding control and adjustment processes, and the degree of automation is high. The water level sensor is a prior art, and the operation principle of the water level sensor is not described in detail herein.
Further, the ultraviolet lamp is arranged on the upper portion of the inner wall of the water storage bin 204, and can disinfect water in the water storage bin 204, so that the purifying effect is good.
Further, the apparatus further includes a pedal 300 of stainless steel having mesh openings for a worker to stand, and the mesh openings prevent the pedal 300 from accumulating dirt. The pedal 300 is flush with the bottom side wall of the case 200, and a worker stands on the pedal 300 to observe the case 200 and the can 100. One side of the pedal 300 is welded on the side wall of the box body 200, the length of the pedal 300 is the same as that of the box body 200, stainless steel rails 302 are arranged on the three other sides of the pedal 300, which are not connected with the box body 200, a ladder stand 301 for workers to climb is further arranged on one side of the pedal 300, which is far away from the box body 200, and the ladder stand 301 extends downwards to the ground. The middle section of the ladder 301 is fixedly connected with the side wall of the tank body 100 through a connecting rod, so that the stability of the ladder 301 can be improved.
Further, a reinforcing rib 303 is arranged between the lower side surface of the pedal 300 and the tank body 100, and the reinforcing rib 303 can strengthen the stability of the pedal 300 and improve the safety performance.
Further, the bottom of the tank body 100 is provided with the supporting seat 400, one side of the supporting seat 400 contacted with the tank body 100 is semicircular, the supporting seat is convenient to be matched with the tank body 100, one side of the supporting seat 400 contacted with the ground is planar, the contact area with the ground is increased, and the stability is improved. The support base 400 can make the tank body 100 far away from the ground, and reduce corrosion damage to the tank body 100.
Further, the using method of the device comprises the following working steps:
S1, a control box 210 controls a water inlet pump 101 to be started, sewage enters a hydrolysis acidification bin 105 under the action of the water inlet pump 101, and the sewage is purified by anaerobic bacteria and facultative bacteria;
s2, the treated sewage enters the contact oxidation bin 106 from the first self-flow hole 108, the blower 211 is started, the air is blown into the contact oxidation bin 106 for aeration, and the sewage is purified by aerobic bacteria;
s3, the treated sewage enters the MBR bin 107 from the second self-flowing hole 109, the blower 211 blows air into the MBR bin 107 for aeration, and the sewage is filtered and purified by the MBR membrane;
S4, the control box 210 controls the working state of the three-way electromagnetic valve 208 to enable the first pipe 213 to be communicated with the water production pipe, the control box 210 controls the water suction pump 207 to start, and sewage enters the water storage bin 204 along the water production pipe and the first pipe 213; the control box 210 controls the return pump 102 to be started, part of muddy water at the bottom of the MBR bin 107 flows back into the hydrolysis acidification bin 105 along the return pipe 104 for denitrification treatment, and the sewage purification process is completed.
Further, a water level sensor for sensing the upper limit of the water level is arranged in the hydrolysis acidification bin 105; in the step S1, when the water level is lower than a preset lower limit value, a water level sensor feeds back a signal to a control box 210, the control box 210 controls the water inlet pump 101 to start, and sewage is injected into the hydrolysis acidification bin 105; when the water level is higher than the preset upper limit value, the water level sensor feeds back a signal to the control box 210, the control box 210 controls the water inlet pump 101 to be closed, and when the water level is lower than the preset upper limit value, the control box 210 controls the water inlet pump 101 to be opened, so that the sewage treatment process can be automatically coordinated, and the sewage treatment process is smoother.
Further, during the operation of the apparatus, the three-way electromagnetic valve 208 is periodically changed in the passage state, and the water producing pipe is periodically changed between the state of communicating with the first pipe 213 and the state of communicating with the backwash pipe 209. When the water producing pipe is communicated with the first pipe 213, the MBR chamber 107 is in a state of supplying water to the water storage chamber 204, the water suction pump 207 is periodically turned on, and the backwash pump 206 is turned off; when MBR membrane filters, the aggregate and the corpuscle of mud can be piled up on the membrane surface, and when long-time continuous goes out water, even there is air bubble that the aeration pipeline formed and upward flow to wash the membrane surface, still there is mud to pile up on the membrane surface, and the periodic operation of suction pump 207 can improve this condition greatly, and when suction pump 207 stopped drawing water, the differential pressure of MBR membrane both sides reduces so as to disappear, and the pollutant that adheres to the membrane surface drops under the disturbance of aeration pipeline production bubble and upward flow more easily, reaches abluent purpose. When the first pipe 213 is communicated with the backwash pipe 209, the water suction pump 207 is closed, the backwash pump 206 is opened, water in the water storage bin 204 flows along the backwash pipe 209, the water production pipe and the water collecting pipe on the MBR membrane frame, finally flows into the fiber membrane pipe of the MBR membrane assembly, and passes through the membrane wall from the inner side of the membrane pipe, so as to clean dirt on the membrane wall, and at the moment, the equipment enters a backwash state.
Specifically, the water producing pipe is changed from the state of communicating with the first pipe 213 to the state of communicating with the backwash pipe 209 every six hours and maintained in that state for three minutes, and then the water producing pipe is changed from the state of communicating with the backwash pipe 209 back to the state of communicating with the first pipe 213. When the water producing pipe is in a state of being connected to the first pipe 213, the water pump 207 is turned off every six to eight minutes, and the off state lasts for two minutes, and after two minutes, the water pump 207 is turned on.
The working principle of the invention is as follows: the sewage separated and regulated by the external equipment is lifted into the hydrolysis acidification bin 105 by the water inlet pump 101, under the action of anaerobic bacteria and facultative bacteria of the hydrolysis acidification bin 105, pollutants such as CODcr, BOD5, NH3-N and the like in the sewage are partially removed, phosphorus in the sewage is released, and macromolecular organic matters are decomposed into micromolecular organic matters; the sewage after hydrolysis and acidification flows into the contact oxidation bin 106, and most of CODcr, BOD5, phosphorus and other pollutants in the sewage are removed under the action of various aerobic bacteria; the treated sewage flows into an MBR bin 107 again, and the residual CODcr, BOD5, NH3-N, SS, total phosphorus and other pollutants are efficiently removed; the sewage after biochemical treatment is pumped to the water storage bin 204 by the water pump 207, and can be discharged or recycled after being sterilized by an ultraviolet lamp; discharging the surplus sludge generated by each bin body to a sludge pond for periodic outward transportation and disposal; and (3) refluxing part of the muddy water in the MBR tank to the hydrolysis acidification tank for denitrification treatment.
The foregoing is a further detailed description of the invention in connection with specific embodiments, and it is not intended that the invention be limited to such description. It will be apparent to those skilled in the art that several simple deductions or substitutions can be made without departing from the spirit of the invention.
Claims (8)
1. An MBR integrated domestic sewage treatment device comprises a tank body (100) and a box body (200), wherein the tank body (100) is internally divided into a hydrolysis acidification bin (105), a contact oxidation bin (106) and an MBR bin (107) through a partition plate; the hydrolysis acidification bin (105) is communicated with a water inlet pipe (103), and a water inlet pump (101) is arranged on the water inlet pipe (103); a first self-flow hole (108) is arranged on a partition plate between the hydrolysis acidification bin (105) and the contact oxidation bin (106); a second self-flow hole (109) is arranged on a partition plate between the contact oxidation bin (106) and the MBR bin (107); the height of the first self-flow hole (108) is higher than the height of the second self-flow hole (109); the MBR bin (107) is communicated with the hydrolysis acidification bin (105) through a return pipe (104), the return pipe (104) is provided with a return pump (102), and the return pump (102) is fixed on the side wall of the tank body (100); the box body (200) is fixedly arranged on the side wall of the tank body (100), the box body (200) is divided into a first chamber (201), an equipment chamber (202) and a first observation channel (203) which are transversely arranged in sequence through a partition plate, and the first chamber (201) is divided into a second observation channel (205), a third observation channel (212) and a water storage bin (204) through the partition plate; the water storage bin (204) is communicated with a first pipe (213) and a backwash pipe (209), a water suction pump (207) is arranged on the first pipe (213), a backwash pump (206) is arranged on the backwash pipe (209), the MBR bin (107) is provided with a water production pipe, and the first pipe (213), the backwash pipe (209) and the water production pipe are communicated through a three-way electromagnetic valve (208); the first observation channel (203) penetrates through the MBR bin (107), the second observation channel (205) penetrates through the hydrolytic acidification bin (105), and the third observation channel (212) penetrates through the contact oxidation bin (106); the backwash pump (206) and the water suction pump (207) are both positioned in the equipment room (202), a control box (210) and a blower (211) are arranged in the equipment room (202), and the blower (211) is respectively communicated with the bottom of the contact oxidation bin (106) and the bottom of the MBR bin (107) through pipelines; the water suction pump (207), the reflux pump (102), the backwash pump (206), the water inlet pump (101), the blower (211) and the three-way electromagnetic valve (208) are controlled by a control box (210);
a water level sensor for sensing the water level is arranged in the hydrolysis acidification bin (105), and the water level sensor is electrically connected with the control box (210);
An ultraviolet lamp is arranged in the water storage bin (204).
2. The device according to claim 1, further comprising a pedal (300) for a worker to stand, wherein the pedal (300) is fixed on a side wall of the box (200), a fence (302) is arranged on the pedal (300), a ladder stand (301) is arranged on one side, away from the box (200), of the pedal (300), the ladder stand (301) extends downwards, and a middle section of the ladder stand (301) is fixedly connected with the side wall of the tank (100) through a connecting rod.
3. The apparatus according to claim 2, characterized in that a reinforcing rib (303) is provided between the underside of the pedal (300) and the tank (100).
4. The apparatus according to claim 1, wherein the bottom of the tank (100) is provided with a support seat (400).
5. A method of using the device according to any one of claims 1 to 4, comprising the working steps of:
s1, injecting sewage into the hydrolysis acidification bin (105), and purifying the sewage by anaerobic bacteria and facultative bacteria;
S2, the treated sewage enters the contact oxidation bin (106) from the first self-flow hole (108), the contact oxidation bin (106) is aerated, and the sewage is purified by aerobic bacteria;
S3, the treated sewage enters the MBR bin (107) from the second self-flowing hole (109), the sewage is aerated into the MBR bin (107), and the sewage is filtered and purified by an MBR membrane;
S4, enabling the first pipe (213) to be communicated with the water production pipe, starting the water suction pump (207), pumping sewage into the water storage bin (204), starting the reflux pump (102), and refluxing mud water at the bottom of the MBR bin (107) to the hydrolysis acidification bin (105) to finish the sewage purification process.
6. The method of using the device according to claim 5, characterized in that a water level sensor for sensing an upper limit of the water level is arranged in the hydrolytic acidification tank (105), and the water level sensor is electrically connected with the control box (210); in the step S1, when the water level is lower than a preset lower limit value, the water level sensor feeds back a signal to the control box (210), the control box (210) controls the water inlet pump (101) to start, and sewage is injected into the hydrolysis acidification bin (105); when the water level is higher than a preset upper limit value, the water level sensor feeds back a signal to the control box (210), and the control box (210) controls the water inlet pump (101) to be closed.
7. The method of using an apparatus as claimed in claim 5, wherein during operation of the apparatus, the three-way solenoid valve (208) is periodically changed in a passage state, thereby periodically changing the water producing pipe between a state of being connected to the first pipe (213) and a state of being connected to the backwash pipe (209), the water pump (207) is periodically turned on when the water producing pipe is connected to the first pipe (213), the backwash pump (206) is turned off, and the water pump (207) is turned off when the first pipe (213) is connected to the backwash pipe (209), and the backwash pump (206) is turned on.
8. The method of using the apparatus according to claim 7, wherein the water producing pipe is changed from a state of being communicated with the first pipe (213) to a state of being communicated with the backwash pipe (209) every six hours and is maintained in that state for three minutes, and then the water producing pipe is changed from a state of being communicated with the backwash pipe (209) back to a state of being communicated with the first pipe (213); when the water producing pipe is in a state of being communicated with the first pipe (213), the water pump (207) is turned off every six to eight minutes, the closing state lasts for two minutes, and after two minutes, the water pump (207) is turned on.
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