CN114180765A - Intelligent multiple biological prevention and control device and method for marine MBR (membrane bioreactor) water treatment equipment - Google Patents
Intelligent multiple biological prevention and control device and method for marine MBR (membrane bioreactor) water treatment equipment Download PDFInfo
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- CN114180765A CN114180765A CN202111482388.XA CN202111482388A CN114180765A CN 114180765 A CN114180765 A CN 114180765A CN 202111482388 A CN202111482388 A CN 202111482388A CN 114180765 A CN114180765 A CN 114180765A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 71
- 238000000034 method Methods 0.000 title claims abstract description 39
- 230000002265 prevention Effects 0.000 title claims abstract description 16
- 239000012528 membrane Substances 0.000 title description 16
- 238000004659 sterilization and disinfection Methods 0.000 claims abstract description 63
- 239000010865 sewage Substances 0.000 claims abstract description 44
- 239000007788 liquid Substances 0.000 claims description 22
- 238000012545 processing Methods 0.000 claims description 13
- 244000005700 microbiome Species 0.000 claims description 10
- 239000000126 substance Substances 0.000 claims description 7
- 230000000249 desinfective effect Effects 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 4
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 239000000645 desinfectant Substances 0.000 claims description 4
- 229920002521 macromolecule Polymers 0.000 claims description 4
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- 239000007789 gas Substances 0.000 description 22
- 244000000010 microbial pathogen Species 0.000 description 6
- 239000003814 drug Substances 0.000 description 5
- 238000001914 filtration Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000012544 monitoring process Methods 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000002779 inactivation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000003621 irrigation water Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- 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
- C02F1/325—Irradiation devices or lamp constructions
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
- A61L9/00—Disinfection, sterilisation or deodorisation of air
- A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
- A61L9/18—Radiation
- A61L9/20—Ultraviolet radiation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/008—Originating from marine vessels, ships and boats, e.g. bilge water or ballast water
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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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
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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
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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Abstract
The invention aims to provide an intelligent multiple biological prevention and control device and method for marine MBR water treatment equipment, which comprises sewage treatment equipment, exhaust disinfection equipment, an exhaust pipe, a dosing tank and an effluent ultraviolet disinfection device, wherein the exhaust disinfection equipment comprises a barrel, an air-entraining fan, an ultraviolet lamp tube and an air filter element are arranged in the barrel from bottom to top, the ultraviolet lamp tube is fixed through a lamp tube bracket, the upper part of the air filter element is connected with the sewage treatment equipment through the exhaust pipe, the sewage treatment equipment is connected with the effluent ultraviolet disinfection device through a drain pipe, and the effluent ultraviolet disinfection device is connected with the dosing tank through a water outlet pipe. The invention focuses on the biological safety problem of the equipment in the operation process, provides a multiple disinfection scheme aiming at exhaust and effluent, and the disinfection process can be controlled by using a PLC (programmable logic controller), so that the intellectualization of the equipment is improved, and the equipment is safe and reliable in operation.
Description
Technical Field
The invention relates to a sewage treatment device and a method, in particular to a sewage treatment device and a method for a ship.
Background
With the rapid development of the world shipping industry, more and more ships come and go around all over the world, and great threat is caused to the marine environment. At present, people pay attention to the concentration of COD, ammonia nitrogen and other substances in ship sewage, and few people pay attention to microorganisms in the sewage.
However, pathogenic microorganisms in the ship domestic sewage have great potential harm to human health, and the existing treatment technology neglects the biological safety prevention and control requirement of the ship domestic sewage treatment, and under the condition, the ship domestic sewage treatment may cause serious pollution and biological safety problems. The research shows that: the simple sewage treatment process has very limited treatment effect on pathogenic microorganisms in sewage, and a disinfection unit is required to be additionally arranged at the rear end to improve the inactivation efficiency of the pathogenic microorganisms. Compared with urban domestic sewage, the ship domestic sewage has obvious differences in aspects such as sewage generation mode, composition characteristics, conveying pipelines, treatment process types and the like. In particular, the ship domestic sewage has high pollutant concentration, complex components and high content of pathogenic microorganisms, the whole process of sewage generation, transportation, treatment and discharge has potential risk of pathogenic microorganism propagation, and once the pathogenic microorganisms in the sewage rapidly propagate, the consequences are unreasonable.
Disclosure of Invention
The invention aims to provide an intelligent multiple biological prevention and control device and method for MBR water treatment equipment for ships, which can reduce the relevant physicochemical indexes of effluent and ensure the biological safety in the operation process.
The purpose of the invention is realized as follows:
the invention relates to an intelligent multiple biological prevention and control device of a marine MBR water treatment device, which is characterized in that: including sewage treatment device, exhaust disinfecting equipment, blast pipe, dosing tank, play water ultraviolet disinfection device, exhaust disinfecting equipment includes the barrel, sets up bleed fan, ultraviolet fluorescent tube, air filter in the barrel from bottom to top, and the ultraviolet fluorescent tube passes through the fluorescent tube support to be fixed, and sewage treatment device is connected through the blast pipe in air filter's top, and sewage treatment device passes through water piping connection play water ultraviolet disinfection device, goes out water ultraviolet disinfection device and passes through outlet pipe connection dosing tank.
The intelligent multiple biological prevention and control device of the MBR water treatment equipment for the ship can also comprise:
1. an exhaust electromagnetic valve is arranged on the exhaust pipe, a drainage electromagnetic valve, a water outlet pump and a water outlet flow sensor are arranged on the drain pipe, a dosing feeding pipe is arranged between the water outlet pipe and the dosing tank, a dosing metering pump is arranged on the dosing feeding pipe, and the sewage treatment equipment is provided with a gas pressure sensor and a liquid level sensor.
2. The control device comprises a central control unit, a sensor unit, a signal processing unit and a driving module unit, wherein the air pressure sensor, the liquid level sensor and the water outlet flow sensor are all connected with the sensor unit, the signal output end of the sensor unit is connected with the signal processing unit, and the signal processing unit is connected with the central control unit; the driving module unit is respectively connected with an exhaust electromagnetic valve, a water discharge electromagnetic valve, a water outlet pump, a dosing metering pump, an air-entraining fan and an ultraviolet lamp tube.
The invention relates to an intelligent multiple biological prevention and control method of marine MBR water treatment equipment, which is characterized by comprising the following steps: when the air pressure value in the sewage treatment equipment is higher than a set upper limit threshold value, after an exhaust electromagnetic valve and an ultraviolet lamp tube are opened, a gas-entraining fan is started to suck exhaust in the sewage treatment equipment, the exhaust enters the exhaust disinfection equipment along an exhaust pipeline 5, the exhaust is primarily filtered by an air filter element to remove macromolecular substances in the exhaust, the air filter element is attached with active carbon to remove exhaust odor, the exhaust passes through the ultraviolet lamp tube after passing through the air filter element, the lamp tube is arranged in the middle of the exhaust disinfection equipment to irradiate the exhaust without dead angles, so that microorganisms carried in the exhaust are killed, and when the air pressure in the sewage treatment equipment is lower than the set lower limit threshold value, the exhaust electromagnetic valve, the ultraviolet lamp tube and the gas-entraining fan are closed; the irradiation time of the ultraviolet lamp tube to the exhaust air is further changed by changing the rotating speed of the air-entraining fan and the flow of the exhaust air.
The intelligent multiple biological prevention and control method of the MBR water treatment equipment for the ship can further comprise the following steps:
1. when the liquid level in the sewage treatment equipment is greater than or equal to the set upper limit threshold value, stopping the process of water inflow from other areas to the sewage treatment equipment, starting timing inside the central control unit, and when the timing is equal to the set retention time, starting the water outflow process of the sewage treatment equipment: the method comprises the steps of firstly opening a drainage electromagnetic valve and an effluent ultraviolet disinfection device, then starting an effluent pump, pumping water in sewage treatment equipment, enabling the water to reach the ultraviolet disinfection device through a drainage pipe for physical disinfection, vertically arranging the effluent ultraviolet disinfection device, enabling the water flow to enter from bottom to top, enabling all effluent to be subjected to ultraviolet radiation, opening a dosing metering pump when the effluent flows out of the effluent ultraviolet disinfection device, adding a disinfectant into the effluent, carrying out chemical disinfection, and directly discharging the effluent after the process is completed.
The invention has the advantages that: the invention focuses on the biological safety problem of the equipment in the operation process, provides a multiple disinfection scheme aiming at exhaust and effluent, and the disinfection process can be controlled by using a PLC (programmable logic controller), so that the intellectualization of the equipment is improved, and the equipment is safe and reliable in operation.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic illustration of the operation of the present invention;
FIG. 3 is a schematic view of an exhaust gas disinfecting apparatus;
FIG. 4 is a block diagram of a control structure of exhaust gas sterilization;
FIG. 5 is a block diagram of a control structure for effluent disinfection;
FIG. 6 is a flow chart of the present invention.
Detailed Description
The invention will now be described in more detail by way of example with reference to the accompanying drawings in which:
with reference to fig. 1-6, the intelligent multiple biological prevention and control device for the marine MBR water treatment equipment comprises an air-entraining fan 1, an ultraviolet lamp tube 2, a lamp tube bracket 3, a high-efficiency air filter element 4, an exhaust pipe 5, an electromagnetic valve 6, an air pressure sensor 7, a control device 8, a water outlet pipe 9, a dosing metering pump 10, a dosing feeding pipe 11, a dosing tank 12, an effluent ultraviolet disinfection device 13, an effluent flow sensor 14, an effluent pump 15 and an electromagnetic valve 16.
The control device 8 comprises a parameter setting unit 8-1, a sensor unit 8-2, a signal processing unit 8-3, a central control unit 8-4, a display unit 8-5 and a driving module unit 8-6;
the signal output end of the parameter setting unit 8-1 is connected with the signal input end of the central control unit 8-4 and is used for setting the operation parameters and the variable threshold value of the sewage treatment equipment;
the signal output end of the sensor unit 8-2 is connected with the signal processing input end of the signal processing unit 8-3, and the sensor unit 8-2 is used for collecting signals of the air pressure sensor 7 and the flowmeter 14;
the signal output of the signal processing unit 8-3 is connected to the signal input of the central control unit 8-4 for transmitting the converted recognizable sensor signal to the central control unit
The display unit 8-5 is used for displaying various real-time states of the equipment in the operation process;
the driving module unit 8-6 is connected with the central processing unit 8-4, and drives the relevant equipment to start to operate after receiving the working signal;
the gas pressure sensor 7 is arranged on the top of the sewage treatment equipment 17, and the pressure signal output end of the gas pressure sensor is connected with the pressure signal input end of the sensor unit 8-2. The device is used for monitoring the air pressure in the equipment and returning the collected air pressure parameters to the PLC, so as to prevent the over-pressure in the reactor or the negative pressure caused by suction;
the liquid level sensor 18 is arranged in the equipment membrane pool, the liquid level signal output end of the liquid level sensor is connected with the liquid level signal input end of the sensor unit 8-2, and the liquid level sensor is used for monitoring the liquid level of the equipment membrane pool and returning the collected liquid level parameters to the PLC;
all areas of the sewage treatment equipment are communicated with each other to ensure the air pressure balance in the equipment, and one end of the exhaust pipe 5 is connected to the upper part of the equipment main body 17;
the electromagnetic valve 6 is arranged on the exhaust pipe 5 and is used for preventing gas in the equipment from overflowing randomly;
the other end of the exhaust pipe is communicated with the exhaust disinfection equipment, and the exhaust disinfection equipment is designed into a cylinder and is divided into three sections: a primary filtering section, an ultraviolet irradiation section and an air exhaust section.
The primary filtering section mainly comprises a high-efficiency air filter element 4 with the aperture of 0.3 mu m, and can carry out primary filtering on the exhaust gas in the reactor so as to filter macromolecular substances possibly carried in the exhaust gas, and in addition, the filter element is also attached with active carbon so as to adsorb the peculiar smell of the exhaust gas. The filter element is arranged above the exhaust and disinfection equipment, and a drawer type installation mode is adopted, so that the filter element is convenient to replace at a later stage;
the ultraviolet irradiation section is composed of an ultraviolet lamp tube 2 and a lamp tube bracket 3. After the exhaust gas passes through the filter element, the ultraviolet lamp tube irradiates the exhaust gas to kill micromolecular microorganisms which may be carried in the exhaust gas. The lamp tube bracket is cross-shaped, which can fix the lamp tube and also can not block the flow of gas, and the middle of the bracket is perforated to fix the lamp tube, so that the lamp tube can irradiate the exhaust without dead angles.
The air exhaust section comprises a bleed fan 1 for drawing air from the reactor.
One end of the water outlet pipe 9 is connected with the water outlet end of the MBR membrane, and the electromagnetic valve 16, the water outlet pump 15, the flowmeter 14 and the ultraviolet disinfection equipment 13 are all arranged on the water outlet pipe.
The electromagnetic valve 16 is used for controlling the flow of the water outlet pipe 9;
the water outlet pump 15 adopts a self-suction magnetic pump, and negative pressure is formed in the MBR membrane through self-suction, so that water is discharged through the MBR membrane. The pump can enter a working state without introducing irrigation water, is convenient and quick to operate and maintain, and effectively ensures the biological safety in the drainage process because the liquid overflowing part of the pump is in a closed state;
the flow signal output end of the flowmeter 14 is connected with the flow signal input end of the sensor unit 8-2 and used for monitoring the water outlet flow of the equipment in real time and regulating and controlling the water outlet flow by matching with the water outlet pump 15;
the ultraviolet disinfection equipment 13 is used for disinfecting the effluent of the reactor, the effluent flows in from the lower part and flows out from the upper part, and microorganisms possibly contained in the effluent are killed by the irradiation of ultraviolet lamp light;
after the dosing metering pump is arranged on the ultraviolet disinfection equipment, the medicine inlet is connected with a dosing box 12 through a medicine feeding pipe 11, and the dosing box 12 is arranged on the side surface of the equipment main body 17. The medicine outlet pipe is connected with the water outlet pipe through a tee joint, and the metering pump can prevent liquid from flowing back, so that a check valve is not required to be arranged.
The first embodiment is as follows: the exhaust gas sterilizing process will be described with reference to fig. 1, 2, 3, 4 and 6. In this embodiment, the driving module unit 8-6 includes an electromagnetic valve driving module, an ultraviolet lamp ballast, and a motor driving module.
The equipment is in a closed state in the operation process, and communicating pipes are arranged among all the areas to ensure the air pressure balance of all the areas. The air pressure sensor 7 monitors the air pressure in the equipment in real time, the sensor unit 8-2 and the signal processing unit 8-3 transmit the acquired signals to the central control unit 8-4, the parameter setting unit 8-1 is used for setting the upper and lower threshold values of the air pressure in the equipment and transmitting the upper and lower threshold values to the central control unit 8-4, and corresponding instructions are sent to related devices by comparing the data of the air pressure sensor with the set threshold values.
When the air pressure value in the equipment is higher than the set upper limit threshold value, after the electromagnetic valve 6 and the ultraviolet lamp tube 2 are opened, the air-entraining fan 1 is started to suck the exhaust air in the equipment. The exhaust enters the exhaust disinfection equipment along the exhaust pipeline 5, firstly, the exhaust is subjected to primary filtration efficiently to remove macromolecular substances possibly carried in the exhaust, and the filter element is also attached with active carbon to remove exhaust odor. The exhaust gas passes through the ultraviolet lamp tube 2 after passing through the filter element, and the lamp tube is arranged in the middle of the exhaust disinfection equipment, so that dead-angle-free irradiation can be performed on the exhaust gas, and the microorganisms carried in the exhaust gas can be more thoroughly killed. When the air pressure in the equipment is lower than a set lower limit threshold, the electromagnetic valve 6, the ultraviolet lamp tube 2 and the air-entraining fan 1 are closed, so that negative pressure formed in the equipment due to excessive suction is prevented. The flow of the exhausted air can be changed by changing the rotating speed of the air-entraining fan, and the irradiation time of the ultraviolet lamp tube to the exhausted air is further changed.
The second embodiment is as follows: the effluent disinfection process is described with reference to fig. 1, fig. 2, fig. 5 and fig. 6. The effluent disinfection process adopts physical-chemical combined disinfection, so that microorganisms in the effluent are thoroughly disinfected. In the present embodiment, the driving module unit 8-6 includes a solenoid driving module and a motor driving module.
The liquid level in the membrane pool is monitored in real time by a liquid level sensor 18, collected signals are transmitted to a central control unit 8-4 by a sensor unit 8-2 and a signal processing unit 8-3, an upper threshold value and a lower threshold value of the liquid level of the membrane pool and the residence time of water in the membrane pool are set by a parameter setting unit 8-1 and then transmitted to the central control unit 8-4, and corresponding instructions are sent to related devices by comparing the data of the liquid level sensor with the set threshold value and combining the set residence time.
When the liquid level in the membrane pool is more than or equal to the set upper limit threshold value, stopping the process of water inflow from other areas to the membrane pool, starting timing inside the PLC, and when the timing is equal to the set retention time, starting the water outflow process of the membrane pool.
The electromagnetic valve 16 and the ultraviolet disinfection device 13 are firstly opened, and then the water outlet pump 15 is started. Water in the membrane pool is pumped out through the MBR membrane assembly and reaches the ultraviolet disinfection device 13 through the flow meter 14 by the drain pipe 9 for physical disinfection, the ultraviolet disinfection device is vertically arranged, the water flow moves downwards and upwards, the fact that the water flows out is guaranteed to be irradiated by ultraviolet light completely, and the retention time of the water in the ultraviolet disinfection device is prolonged. When the effluent flows out of the ultraviolet disinfection equipment, the dosing metering pump 10 is opened, and the disinfectant is dosed into the effluent to carry out chemical disinfection. The effluent can be directly discharged after the process is finished.
The chemical disinfection is placed after the physical disinfection, and the phenomenon that chemical agents increase the turbidity of the effluent so as to influence the ultraviolet disinfection effect is avoided.
The flowmeter 14 monitors the effluent flow in real time, and the following process control can be further refined through flow parameters:
1. the opening time interval of the water outlet pump and the dosing metering pump can be calculated according to the measured flow and the length of a pipeline from the water outlet of the device to the disinfectant dosing port, so that the situation that liquid medicine is not mixed with outlet water and directly flows into the environment due to the fact that the dosing metering pump is opened too early is prevented;
2. the metering pump is adjusted by matching with the flow, and the adding amount of the liquid medicine is changed, so that the disinfection effect can be achieved, and the residual chlorine content in the effluent can be ensured to meet the discharge standard of IMO.
Compared with land sewage treatment, the space of the cabin is narrow and closed, and the untreated gas discharged by MBR equipment can increase the content of pathogenic bacteria in the air in the cabin and harm the health of crews; moreover, the marine MBR has high water outlet speed, the traditional single ultraviolet disinfection can not completely ensure that the germ content in the outlet water meets the discharge standard, and the problem of bacteria breeding in the outlet water pipeline can not be solved. At present, the research on the biological safety prevention and control of marine MBR is reported, and the disinfection method has the advantages that:
(1) gas disinfection process: the equipment is in a closed state, and internal gas is exhausted from a special pipeline after being sterilized by a gas sterilization module, so that the gas carrying microorganisms is prevented from being directly exhausted into the air;
(2) and (3) an effluent disinfection process: the MBR membrane effluent of the equipment is disinfected to eliminate microorganisms in the effluent, and a physical-chemical combined disinfection method is adopted to thoroughly kill microorganisms possibly carried in the effluent.
Claims (5)
1. The utility model provides a multiple biological prevention and control device of intelligence of marine MBR water treatment facilities, characterized by: including sewage treatment device, exhaust disinfecting equipment, blast pipe, dosing tank, play water ultraviolet disinfection device, exhaust disinfecting equipment includes the barrel, sets up bleed fan, ultraviolet fluorescent tube, air filter in the barrel from bottom to top, and the ultraviolet fluorescent tube passes through the fluorescent tube support to be fixed, and sewage treatment device is connected through the blast pipe in air filter's top, and sewage treatment device passes through water piping connection play water ultraviolet disinfection device, goes out water ultraviolet disinfection device and passes through outlet pipe connection dosing tank.
2. The intelligent multiple biological prevention and control device of the MBR water treatment equipment for the ship of claim 1, which is characterized in that: an exhaust electromagnetic valve is arranged on the exhaust pipe, a drainage electromagnetic valve, a water outlet pump and a water outlet flow sensor are arranged on the drain pipe, a dosing feeding pipe is arranged between the water outlet pipe and the dosing tank, a dosing metering pump is arranged on the dosing feeding pipe, and the sewage treatment equipment is provided with a gas pressure sensor and a liquid level sensor.
3. The intelligent multiple biological prevention and control device of the MBR water treatment equipment for the ship of claim 2, which is characterized in that: the control device comprises a central control unit, a sensor unit, a signal processing unit and a driving module unit, wherein the air pressure sensor, the liquid level sensor and the water outlet flow sensor are all connected with the sensor unit, the signal output end of the sensor unit is connected with the signal processing unit, and the signal processing unit is connected with the central control unit; the driving module unit is respectively connected with an exhaust electromagnetic valve, a water discharge electromagnetic valve, a water outlet pump, a dosing metering pump, an air-entraining fan and an ultraviolet lamp tube.
4. An intelligent multiple biological prevention and control method for a marine MBR water treatment device is characterized by comprising the following steps: when the air pressure value in the sewage treatment equipment is higher than a set upper limit threshold value, after an exhaust electromagnetic valve and an ultraviolet lamp tube are opened, a gas-entraining fan is started to suck exhaust in the sewage treatment equipment, the exhaust enters the exhaust disinfection equipment along an exhaust pipeline 5, the exhaust is primarily filtered by an air filter element to remove macromolecular substances in the exhaust, the air filter element is attached with active carbon to remove exhaust odor, the exhaust passes through the ultraviolet lamp tube after passing through the air filter element, the lamp tube is arranged in the middle of the exhaust disinfection equipment to irradiate the exhaust without dead angles, so that microorganisms carried in the exhaust are killed, and when the air pressure in the sewage treatment equipment is lower than the set lower limit threshold value, the exhaust electromagnetic valve, the ultraviolet lamp tube and the gas-entraining fan are closed; the irradiation time of the ultraviolet lamp tube to the exhaust air is further changed by changing the rotating speed of the air-entraining fan and the flow of the exhaust air.
5. The intelligent multiple biological prevention and control method of the MBR water treatment equipment for the ship according to claim 4, which is characterized in that: when the liquid level in the sewage treatment equipment is greater than or equal to the set upper limit threshold value, stopping the process of water inflow from other areas to the sewage treatment equipment, starting timing inside the central control unit, and when the timing is equal to the set retention time, starting the water outflow process of the sewage treatment equipment: the method comprises the steps of firstly opening a drainage electromagnetic valve and an effluent ultraviolet disinfection device, then starting an effluent pump, pumping water in sewage treatment equipment, enabling the water to reach the ultraviolet disinfection device through a drainage pipe for physical disinfection, vertically arranging the effluent ultraviolet disinfection device, enabling the water flow to enter from bottom to top, enabling all effluent to be subjected to ultraviolet radiation, opening a dosing metering pump when the effluent flows out of the effluent ultraviolet disinfection device, adding a disinfectant into the effluent, carrying out chemical disinfection, and directly discharging the effluent after the process is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111482388.XA CN114180765A (en) | 2021-12-06 | 2021-12-06 | Intelligent multiple biological prevention and control device and method for marine MBR (membrane bioreactor) water treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111482388.XA CN114180765A (en) | 2021-12-06 | 2021-12-06 | Intelligent multiple biological prevention and control device and method for marine MBR (membrane bioreactor) water treatment equipment |
Publications (1)
| Publication Number | Publication Date |
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| CN114180765A true CN114180765A (en) | 2022-03-15 |
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