CN114262659A - Automatic bacteria culture system for marine domestic sewage treatment device - Google Patents
Automatic bacteria culture system for marine domestic sewage treatment device Download PDFInfo
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- CN114262659A CN114262659A CN202111467583.5A CN202111467583A CN114262659A CN 114262659 A CN114262659 A CN 114262659A CN 202111467583 A CN202111467583 A CN 202111467583A CN 114262659 A CN114262659 A CN 114262659A
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- anoxic
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- 239000010865 sewage Substances 0.000 title claims abstract description 49
- 241000894006 Bacteria Species 0.000 title claims abstract description 35
- 238000005273 aeration Methods 0.000 claims abstract description 78
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 65
- 239000012528 membrane Substances 0.000 claims abstract description 51
- 239000007788 liquid Substances 0.000 claims abstract description 50
- 239000010802 sludge Substances 0.000 claims abstract description 36
- 238000012544 monitoring process Methods 0.000 claims abstract description 26
- 230000001105 regulatory effect Effects 0.000 claims description 32
- 238000010992 reflux Methods 0.000 claims description 29
- 239000007789 gas Substances 0.000 claims description 25
- 239000000523 sample Substances 0.000 claims description 14
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 12
- 239000001301 oxygen Substances 0.000 claims description 12
- 229910052760 oxygen Inorganic materials 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 9
- 239000003814 drug Substances 0.000 claims description 8
- 206010021143 Hypoxia Diseases 0.000 claims description 7
- 239000003513 alkali Substances 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 244000005700 microbiome Species 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 230000007954 hypoxia Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 241000186361 Actinobacteria <class> Species 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 240000004808 Saccharomyces cerevisiae Species 0.000 description 1
- 241001052560 Thallis Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000012840 feeding operation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005374 membrane filtration Methods 0.000 description 1
- 230000004060 metabolic process Effects 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
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- 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
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- Purification Treatments By Anaerobic Or Anaerobic And Aerobic Bacteria Or Animals (AREA)
- Activated Sludge Processes (AREA)
- Biological Treatment Of Waste Water (AREA)
Abstract
The invention relates to an automatic bacteria culture system for a ship domestic sewage treatment device, which comprises an adjusting cabinet, a conveying pump, an anoxic cabinet, an aerobic cabinet, a membrane cabinet, a suction pump, a clear water cabinet, an electrical control system, a temperature control system, an online monitoring system, a pH adjusting and dosing system, a conveying system, a liquid level sensor, an aeration system and a backflow system, wherein the adjusting cabinet is connected with the temperature control and online monitoring system and is provided with the liquid level sensor, the adjusting cabinet is connected with the anoxic cabinet through the conveying system, the anoxic cabinet and the aerobic cabinet are connected with the aeration system and the online monitoring system, the aerobic cabinet is connected with the pH adjusting and dosing system, the membrane cabinet is connected with the aerobic cabinet and a sludge cabinet through the backflow system, the adjusting cabinet, the anoxic cabinet, the aerobic cabinet, the membrane cabinet, the clear water cabinet and the sludge cabinet are connected with a discharge system, and the temperature control system, the online monitoring system, the pH adjusting and dosing system, The conveying system, the liquid level sensor, the aeration system, the backflow system and the discharge system are all connected with the electric control system.
Description
Technical Field
The invention relates to an automatic bacteria culture system, in particular to a control system suitable for a bacteria culture stage of a ship domestic sewage treatment device.
Background
At present, the ship domestic sewage treatment device mainly adopts a combined treatment mode of biochemical treatment and membrane filtration, and microorganisms in activated sludge are utilized in a biochemical section to remove organic pollutants in wastewater. The microorganisms in the activated sludge include unicellular or multicellular organisms such as bacteria, actinomycetes, molds, yeasts and protozoa, which need nutrition in the process of continuous metabolism, i.e. under the aerobic condition, the microorganisms oxidize and decompose organic substances in the wastewater through the action of enzymes, absorb and synthesize the organic substances into thalli. The pollutant removal effect depends on the growth condition of microorganisms in the activated sludge, so the bacteria culture is an important link for starting and operating the ship domestic sewage treatment device.
In the bacteria culture stage, a stuffy aeration mode (aeration without sewage) is usually adopted, so that the sludge is quickly increased to the required concentration and then the continuous water feeding operation is started, and typical microorganisms appear in about 5 days of bacteria culture under the common concentration load. However, in the process of bacteria cultivation, the sewage state and equipment control are mainly observed, detected and adjusted manually, and the success rate of the bacteria cultivation depends too much on the experience level of bacteria cultivation personnel. Meanwhile, the domestic sewage treatment device is different in running working conditions in different running areas according to ships, the situation that the device needs to be restarted to cultivate after being switched to a treatment mode under the long-term sewage direct drainage working condition often exists, and due to the fact that the domestic sewage treatment device of the real ship is low in informatization and intelligence degree, manual cultivation brought by working condition switching consumes too much manpower and time.
Therefore, an automatic bacteria culture system suitable for a ship domestic sewage treatment device is needed.
Disclosure of Invention
The invention aims to provide an automatic bacteria cultivation system for a ship domestic sewage treatment device, which is used for reducing manual operation of a crew in a bacteria cultivation stage of the device, reducing labor consumption and time consumption and improving the success rate of bacteria cultivation.
In order to solve the technical problems, the invention adopts the following technical scheme:
an automatic bacteria culture system for a ship domestic sewage treatment device comprises an adjusting cabinet, a delivery pump, an anoxic cabinet, an aerobic cabinet, a membrane cabinet, a suction pump, a clear water cabinet, an electrical control system, a temperature control system, an online monitoring system, a pH adjusting and dosing system, a delivery system, a liquid level sensor, an aeration system and a backflow system, wherein the adjusting cabinet is connected with the temperature control and online monitoring system and is provided with the liquid level sensor, the adjusting cabinet is connected with the anoxic cabinet through the delivery system, the anoxic cabinet and the aerobic cabinet are connected with the aeration system and the online monitoring system, the aerobic cabinet is connected with the pH adjusting and dosing system, the membrane cabinet is connected with the aerobic cabinet and a sludge cabinet through the backflow system, the adjusting cabinet, the anoxic cabinet, the aerobic cabinet, the membrane cabinet, the clear water cabinet and the sludge cabinet are connected with a discharge system, and the temperature control system and the online monitoring system are connected with the discharge system, The pH adjusting and dosing system, the conveying system, the liquid level sensor, the aeration system, the reflux system and the discharge system are all connected with the electrical control system.
Further, temperature control system includes heater and temperature controller, and temperature controller contains sensor probe and control element, temperature controller control temperature range is 25 ~ 30 +/-3 ℃, and temperature controller's sensor probe detects the interior liquid level temperature of regulation cabinet every 4 hours, detects that the interior sewage temperature of cabinet is less than the setting value, and the heater automatic start, probe detection regulation cabinet temperature reach the temperature setting value, and the heater automatic stop.
Further, the online monitoring system comprises a regulating cabinet pH sensor, a regulating cabinet UV254 sensor, an anoxic cabinet pH sensor, an anoxic cabinet DO sensor, an aerobic cabinet pH sensor, an aerobic cabinet DO sensor and an aerobic cabinet UV254 sensor, wherein the regulating cabinet pH sensor and the regulating cabinet UV254 sensor are arranged in the regulating cabinet; the anoxic cabinet pH sensor and the anoxic cabinet DO sensor are arranged in the anoxic cabinet; the pH sensor of the aerobic cabinet, the DO sensor of the aerobic cabinet and the UV254 sensor of the aerobic cabinet are arranged in the aerobic cabinet, and the pH sensor of the aerobic cabinet is connected with a pH adjusting and dosing system.
Further, the adjusting cabinet pH sensor and the aerobic cabinet pH sensor are respectively used for detecting the pH value of sewage in the adjusting cabinet and the aerobic cabinet, and the aerobic cabinet pH sensor is connected with the pH adjusting and dosing system; the adjusting cabinet UV254 sensor and the aerobic cabinet UV254 sensor are respectively used for detecting COD concentration of sewage in the adjusting cabinet and the aerobic cabinet, and the detecting time of the adjusting cabinet UV254 sensor is synchronous with that of the aerobic cabinet UV254 sensor; the anoxic cabinet DO sensor and the aerobic cabinet DO sensor are respectively used for detecting the dissolved oxygen concentration of sewage in the anoxic cabinet and the aerobic cabinet and are connected with the aeration system through the electrical control system.
Further, the pH adjusting and dosing system comprises a pH adjusting and dosing pump, a pH adjusting medicine box and a pipeline, and is connected with the pH sensor of the aerobic cabinet through an electric control system; when the pH sensor of the aerobic cabinet detects that the pH value of the sewage in the aerobic cabinet exceeds a set value, the pH adjusting and dosing pump is automatically started, alkali liquor is dosed into the aerobic cabinet from the pH adjusting medicine box, the pH value of the sewage in the aerobic cabinet reaches a set range, and the pH adjusting and dosing pump is automatically stopped.
Further, the aeration system comprises a fan, a gas distributor, a pipeline, an anoxic cabinet aeration electric valve, an anoxic cabinet aeration pipe, an aerobic cabinet aeration adjusting electric valve, an aerobic cabinet aeration disc, a membrane cabinet aeration adjusting electric valve and a membrane cabinet aeration pipe, wherein the gas distributor is connected with the anoxic cabinet aeration electric valve and the anoxic cabinet aeration pipe through pipelines, and the aeration system adjusts the opening degree of the anoxic cabinet aeration electric valve through the detection data of an anoxic cabinet DO probe to adjust the dissolved oxygen in the anoxic cabinet within a control range; the aeration system adjusts the opening of the aerobic cabinet aeration electric valve through the detection data of an aerobic cabinet DO probe to adjust the dissolved oxygen of the aerobic cabinet within a control range; and the gas distributor is connected with the membrane cabinet aeration electric valve and the membrane cabinet aeration pipe through pipelines.
Further, conveying system is used for connecting regulating cabinet and oxygen deficiency cabinet, including delivery pump inlet valve, delivery pump, electromagnetic flow meter, delivery pump export motorised valve, delivery pump export check valve, delivery pump return valve, conveying system passes through electric control system and is connected with level sensor in the regulating cabinet, and after the interior sewage of regulating cabinet reached well level sensor position, the delivery pump automatic start, and when the liquid level was less than low level sensor position, the delivery pump automatic stop.
Further, the output flow of the conveying pump is divided into the water quantity entering the anoxic cabinet and the reflux flow; the water inlet amount of the oxygen deficiency cabinet is transmitted to an electrical control system according to the detected flow of the electromagnetic flowmeter, and is regulated and controlled by adjusting the opening of an electric valve at the outlet of the conveying pump.
Further, a membrane module and a membrane cabinet aeration pipe are arranged in the membrane cabinet, and effluent of the membrane module is conveyed to the clear water cabinet through a suction pump; the clear water tank is internally provided with a high liquid level sensor, a middle liquid level sensor and a low liquid level sensor which are connected with a discharge system through an electrical control system.
Furthermore, the discharge system is connected with each chamber of the adjusting cabinet, the anoxic cabinet, the aerobic cabinet, the membrane cabinet, the clear water cabinet and the sludge cabinet through discharge valves and pipelines; the reflux system comprises a gas distributor, an air stripping electric valve, a reflux electric valve, an aerobic cabinet, a reflux electric valve, a sludge cabinet and corresponding pipelines, wherein the gas distributor of the reflux system is connected with the aerobic cabinet through the air stripping electric valve, an air stripping pipe, the reflux electric valve, the aerobic cabinet, the gas distributor of the reflux system is connected with the sludge cabinet through the air stripping electric valve, the air stripping pipe, the reflux electric valve, the sludge cabinet, and the upper part of the sludge cabinet is connected with the anoxic cabinet through the pipelines.
The invention has the beneficial effects that:
1. an on-line monitoring system is arranged to monitor the control parameters influencing the growth of the microorganisms in real time, which is beneficial to creating a suitable growth range for the microorganisms.
2. The temperature control system, the pH adjusting and dosing system, the conveying system, the aeration system and the backflow system are arranged, the online monitoring system is combined to detect data, the electric control system can control the water temperature, the pH value, the inflow and the dissolved oxygen in a set range suitable for the growth of microorganisms, and the success rate of bacterium cultivation is favorably improved.
Drawings
FIG. 1 is a schematic diagram of an automatic bacteria culture system and a flow chart for a ship domestic sewage treatment device according to the present invention;
in the figure: 1. an electrical control system, 2, a discharge pump, 3, a sludge cabinet, 4, an adjusting cabinet, 5, a delivery pump, 6, an anoxic cabinet, 7, an aerobic cabinet, 8, a membrane cabinet, 9, a clear water cabinet, 10, a fan, 11, a gas distributor, 12, a pH adjusting medicine box, 13, a pH adjusting medicine adding pump, 14, a suction pump, 31, a sludge cabinet discharge valve, 41, an adjusting cabinet pH sensor, 42, an adjusting cabinet UV254 sensor, 43, an adjusting cabinet high liquid level sensor, 44, an adjusting cabinet in liquid level sensor, 45, an adjusting cabinet low liquid level sensor, 46, an adjusting cabinet discharge valve, 47, a temperature controller, 48, a heater, 51, a delivery pump inlet valve, 52, an electromagnetic flow meter, 53, a delivery pump outlet electric valve, 54, a delivery pump outlet check valve, 55, a delivery pump return valve, 61, an anoxic cabinet pH sensor, 62, an anoxic cabinet aeration sensor, 63, an anoxic cabinet DO electric valve, a pump inlet valve, a pump outlet, a pump inlet valve, a pump outlet, a pump, a, 64. An anoxic cabinet aeration pipe, 65, an anoxic cabinet discharge valve, 71, an aerobic cabinet pH sensor, 72, an aerobic cabinet DO sensor, 73, an aerobic cabinet UV254 sensor, 74, an aerobic cabinet aeration electric valve, 75, an aerobic cabinet aeration disc, 76, an aerobic cabinet discharge valve, 81, a membrane module, 82, a membrane cabinet aeration pipe, 83, an air stripping electric valve, 84, a membrane cabinet aeration electric valve, 85, a reflux electric valve, an aerobic cabinet, 86, a reflux electric valve, a sludge cabinet, 87, a membrane cabinet middle liquid level sensor, 88, a membrane cabinet discharge valve, 91, a clean water cabinet high liquid level sensor, 92, a clean water cabinet middle liquid level sensor, 93, a clean water cabinet low liquid level sensor, 94, a clean water cabinet discharge valve, 141, a suction pump valve, 142 and a suction pump outlet check valve.
Detailed Description
In order to make the advantages and technical solutions of the present invention clearer and clearer, the present invention is described in detail below with reference to specific embodiments.
As shown in figure 1, the automatic bacteria culture system for the ship domestic sewage treatment device comprises a ship domestic sewage treatment device, an electrical control system 1, a temperature control system, an online monitoring system, a pH adjusting and dosing system, a conveying system, a liquid level sensor, an aeration system and a backflow system, wherein the ship domestic sewage treatment device consists of a sludge cabinet 3, an adjusting cabinet 4, a conveying pump 5, an anoxic cabinet 6, an aerobic cabinet 7, a membrane cabinet 8, a suction pump 14 and a clear water cabinet 9.
The regulating cabinet 4 is connected with a temperature control system, the regulating cabinet 4 is connected with an online monitoring system, the regulating cabinet is provided with a high liquid level sensor 43 of the regulating cabinet, a middle liquid level sensor 44 of the regulating cabinet and a low liquid level sensor 45 of the regulating cabinet, and the regulating cabinet 4 is provided with a high liquid level sensor, a middle liquid level sensor and a low liquid level sensor and is used for controlling the automatic start and stop of the delivery pump 5. The adjusting cabinet 4 is connected with the anoxic cabinet 6 through a conveying system, the anoxic cabinet 6 and the aerobic cabinet 7 are connected with an aeration system and are connected with an online monitoring system, the aerobic cabinet 7 is connected with a pH adjusting and dosing system, and the membrane cabinet 8 is connected with the aerobic cabinet 7 and the sludge cabinet 3 through a backflow system. The adjusting cabinet 4, the anoxic cabinet 6, the aerobic cabinet 7, the membrane cabinet 8, the clear water cabinet 9 and the sludge cabinet 3 are connected with a discharge system. The temperature control system, the on-line monitoring system, the pH adjusting and dosing system, the conveying system, the liquid level sensor, the aeration system, the backflow system and the discharge system are all connected with the electric control system.
The temperature control system includes a heater 48 and a temperature controller 47, the temperature controller 47 containing sensor probes and control elements. The temperature controller controls the temperature range to be 25-30 (+ -3) DEG C, a sensor probe of the temperature controller detects the liquid level temperature in the regulating cabinet 4 every 4 hours, the temperature of sewage in the detecting cabinet 4 is lower than a set value, the heater 48 is automatically started, the probe detects that the temperature of the regulating cabinet 4 reaches the set value, and the heater 48 is automatically stopped.
The online monitoring system comprises a regulating cabinet pH sensor 41, a regulating cabinet UV254 sensor 42, an anoxic cabinet pH sensor 61, an anoxic cabinet DO sensor 62, an aerobic cabinet pH sensor 71, an aerobic cabinet DO sensor 72 and an aerobic cabinet UV254 sensor 73. Wherein:
the adjusting cabinet pH sensor 41 and the adjusting cabinet UV254 sensor 42 are arranged in the adjusting cabinet 4 and connected with a pH adjusting and dosing system. The hypoxia cabinet pH sensor 61 and the hypoxia cabinet DO sensor 62 are arranged in the hypoxia cabinet 6. The aerobic cabinet pH sensor 71, the aerobic cabinet DO sensor 72 and the aerobic cabinet UV254 sensor 73 are arranged in the aerobic cabinet 7.
The pH sensor is used for detecting the pH value of sewage in the adjusting cabinet and the aerobic cabinet (once every 12 hours), the pH sensor 71 of the aerobic cabinet is connected with a pH adjusting and dosing system, and the system sets the pH adjusting control range to be 7-8 (+/-0.2).
The pH adjusting and dosing system comprises a pH adjusting and dosing pump 13, a pH adjusting medicine box 12 and a pipeline, and is connected with the pH sensor 71 of the aerobic cabinet through an electric control system. According to the detection that the pH value of the sewage in the aerobic cabinet exceeds a set value by the pH sensor 71 of the aerobic cabinet, the pH adjusting and dosing pump 13 is automatically started, alkali liquor is added into the aerobic cabinet 7 from the pH adjusting medicine box 12, so that the pH value of the sewage in the aerobic cabinet 7 reaches a set range, and the pH adjusting and dosing pump 13 is automatically stopped.
The UV254 sensor 42 is used for detecting COD concentration of sewage in the adjusting cabinet 4 and the aerobic cabinet 7, and the adjusting cabinet UV254 sensor 42 and the aerobic cabinet UV254 sensor 73 are synchronous in detection time and detect once every 12 hours.
The DO sensor is used for detecting the dissolved oxygen concentration of the sewage in the cabinet body (once every 4 hours), the DO sensor is connected with the aeration system through the electrical control system, the DO control range of the anoxic cabinet is set to be less than 0.6mg/L, and the DO control range of the aerobic cabinet is set to be 2-5 mg/L.
The aeration system comprises a fan 10, a gas distributor 11, a pipeline, an anoxic cabinet aeration electric valve 63, an anoxic cabinet aeration pipe 64, an aerobic cabinet aeration electric valve 74, an aerobic cabinet aeration disc 75, a membrane cabinet aeration electric valve 84 and a membrane cabinet aeration pipe 82. The gas distributor 11 is connected with the anoxic cabinet aeration electric valve 63 and the anoxic cabinet aeration pipe 64 through pipelines, and the system adjusts the opening degree of the anoxic cabinet aeration electric valve 63 through the detection data of the anoxic cabinet DO probe to adjust the dissolved oxygen of the anoxic cabinet 6 within the control range. The gas distributor 11 is connected with the aerobic cabinet aeration electric valve 74 and the aerobic cabinet aeration disc 75 through pipelines, and the system adjusts the opening degree of the aerobic cabinet aeration electric valve 74 through the detection data of the DO probe of the aerobic cabinet to adjust the dissolved oxygen of the aerobic cabinet 7 within the control range. The gas distributor 11 is connected with the membrane tank aeration electric valve 84 and the membrane tank aeration pipe 82 through pipelines.
The conveying system is used for connecting the adjusting cabinet 4 and the anoxic cabinet 6 and comprises a conveying pump inlet valve 51, a conveying pump 5, an electromagnetic flowmeter 52, a conveying pump outlet electric valve 53, a conveying pump outlet check valve 54 and a conveying pump return valve 55. The conveying system is connected with a liquid level sensor in the adjusting cabinet 4 through an electrical control system, sewage in the adjusting cabinet 4 reaches the liquid level sensor 44 in the adjusting cabinet, the conveying pump 5 is automatically started, the liquid level is lower than the low liquid level sensor 45 of the adjusting cabinet, and the conveying pump 5 automatically stops.
The output flow of the delivery pump 5 is divided into the water quantity entering the anoxic cabinet 6 and the reflux flow. The water inlet amount of the anoxic cabinet 6 is transmitted to an electrical control system according to 52 flow detected by an electromagnetic flowmeter, and the water inlet amount of the anoxic cabinet 6 is regulated and controlled by adjusting the opening degree of an electric valve 53 at the outlet of a conveying pump.
The membrane cabinet 8 is provided with a membrane module 81 and a membrane cabinet aeration pipe 82, and effluent of the membrane module 81 is conveyed to the clean water cabinet 9 through the suction pump 14.
A clear water tank high liquid level sensor 91, a clear water tank medium liquid level sensor 92 and a clear water tank low liquid level sensor 93 are arranged in the clear water tank 9, and the clear water tank liquid level sensor is connected with a discharge system through an electrical control system.
The discharge system is connected with each chamber of the adjusting cabinet 4, the anoxic cabinet 6, the aerobic cabinet 7, the membrane cabinet 8, the clear water cabinet 9 and the sludge cabinet 3 through discharge valves and pipelines.
The reflux system comprises a gas distributor 11, a gas stripping electric valve 83, a reflux electric valve-aerobic cabinet 85, a reflux electric valve-sludge cabinet 86 and corresponding pipelines. The gas distributor 11 of the reflux system is connected with the aerobic cabinet 7 through the gas stripping electric valve 83, the gas stripping pipe, the reflux electric valve-the aerobic cabinet 85, and the gas distributor 11 of the reflux system is connected with the sludge cabinet 3 through the gas stripping electric valve 83, the gas stripping pipe, the reflux electric valve-the sludge cabinet 86. The upper part of the sludge cabinet 3 is connected with the anoxic cabinet 6 through a pipeline.
The invention regulates and controls parameters of water quantity, water temperature, pH and dissolved oxygen which are control factors influencing the growth of microorganisms through a temperature control system, an online monitoring system, a pH adjusting and dosing system, a conveying system, a liquid level sensor, an aeration system and a backflow system, determines the COD removal rate according to the detected COD concentration of inlet and outlet water, and judges the end point of the bacteria culture, the bacteria culture is divided into 4 stages of 'stuffiness aeration-30% inlet water-60% inlet water-100% inlet water', and the specific flow is as follows:
1) after the device is started after water enters, the electric control system collects the pH, temperature and COD parameters of the inlet water by using the online detection system, and the system automatically selects a preset automatic bacteria culture control program to start bacteria culture.
2) The regulating cabinet water level reaches level sensor in the regulating cabinet, and the delivery pump automatic start, oxygen deficiency cabinet, good oxygen cabinet, membrane cabinet advance water in proper order and reach the meso position to the membrane cabinet water level, and the delivery pump stops, gets into the vexed stage of exposing to the sun.
3) The time of the stuffy aeration stage is set to be 3 days, the aeration system and the online monitoring system are started, and the reflux system, the conveying system and the discharge system are kept in a closed state. The online monitoring system and the aeration system detect and regulate the dissolved oxygen in the anoxic cabinet and the aerobic cabinet every 4 hours, so that the DO control range of the anoxic cabinet is less than 0.6mg/L, the DO control range of the aerobic cabinet is 2-5 mg/L, and the pH value of the aerobic cabinet is detected and regulated every 12 hours, so that the pH value of the aerobic cabinet is 7-8 (+/-0.2).
4) After the stuffy aeration is finished, the opening degree of an electric valve at the outlet of the conveying pump is adjusted, so that the water inflow of the anoxic cabinet reaches 30% of the design flow, a 30% water inflow stage is started, the water flows back to the aerobic cabinet system to be started in the stuffy aeration stage state, the sludge of the membrane cabinet flows back to the aerobic cabinet, the supernatant liquid flows to the clear water cabinet, a discharge valve at the bottom of the clear water cabinet is opened, the discharge system is controlled by a liquid level sensor of the clear water cabinet, a discharge pump is started at the middle position, and the pump is stopped at the low position. And (3) controlling the online monitoring system and the aeration system in the same step 3, detecting the COD concentration of the inlet water and the COD concentration of the aerobic cabinet, finishing the step when the removal rate of the COD in the system reaches 75%, and switching to the next step.
5) After 30% water inflow is finished, the opening degree of an electric valve at the outlet of the conveying pump is adjusted, so that the water inflow of the anoxic cabinet reaches 60% of the design flow, a 60% water inflow stage is started, the water flows back to the aerobic cabinet and flows back to the anoxic cabinet in a 30% water inflow stage state to be synchronously opened, 50% of sludge in the membrane cabinet flows back to the aerobic cabinet, 50% of sludge flows back to the sludge cabinet, and supernatant of the sludge cabinet flows back to the anoxic cabinet. At the stage, the membrane module is started, the water outlet of the membrane module is conveyed to the clean water tank through the suction pump, the discharge valve at the bottom of the clean water tank is opened, the discharge system is controlled by the clean water tank liquid level sensor, the discharge pump is started at the middle position, and the pump is stopped at the low position. The online monitoring system and the aeration system are controlled in the same step 3, the COD concentration of the inlet water and the COD concentration of the aerobic cabinet are detected, when the removal rate of the COD in the system reaches 75%, the process is ended, and the process is shifted to the next process.
6) After the 60% water inlet is finished, the electric valve of the outlet of the conveying pump is adjusted to be fully opened, the 100% water inlet of the anoxic cabinet is realized, and all control system settings at the stage are consistent with those at the 60% water inlet stage. The COD concentration of the influent water and the COD concentration of the aerobic cabinet are detected, and when the removal rate of the COD of the system reaches 75%, the bacteria culture is judged to be finished, and the normal treatment working condition of the device can be entered.
Claims (10)
1. The utility model provides an automatic system of cultivating bacteria for boats and ships treatment of domestic sewage device which characterized in that: the device comprises an adjusting cabinet, a delivery pump, an anoxic cabinet, an aerobic cabinet, a membrane cabinet, a suction pump, a clean water cabinet, an electrical control system, a temperature control system, an online monitoring system, a pH adjusting and dosing system, a delivery system, a liquid level sensor, an aeration system and a backflow system, wherein the adjusting cabinet is connected with the temperature control and online monitoring system and is provided with the liquid level sensor, the adjusting cabinet is connected with the anoxic cabinet through the delivery system, the anoxic cabinet and the aerobic cabinet are connected with the aeration system and the online monitoring system, the aerobic cabinet is connected with the pH adjusting and dosing system, the membrane cabinet is connected with the aerobic cabinet and a sludge cabinet through the backflow system, the adjusting cabinet, the anoxic cabinet, the aerobic cabinet, the membrane cabinet, the clean water cabinet and the sludge cabinet are connected with a discharge system, and the temperature control system, the online monitoring system, the pH adjusting and dosing system, the delivery system, the liquid level sensor and the aeration system are connected with the discharge system, And the reflux system and the discharge system are connected with an electrical control system.
2. The automatic bacteria culture system for a marine domestic sewage treatment apparatus according to claim 1, wherein: the temperature control system comprises a heater and a temperature controller, the temperature controller comprises a sensor probe and a control element, the temperature controller controls the temperature range to be 25-30 +/-3 ℃, the sensor probe of the temperature controller detects the liquid level temperature in the regulating cabinet every 4 hours, the temperature of sewage in the detecting cabinet is lower than a set value, the heater is automatically started, the probe detects that the temperature of the regulating cabinet reaches the set value, and the heater automatically stops.
3. The automatic bacteria culture system for a marine domestic sewage treatment apparatus according to claim 1, wherein: the online monitoring system comprises a regulating cabinet pH sensor, a regulating cabinet UV254 sensor, an anoxic cabinet pH sensor, an anoxic cabinet DO sensor, an aerobic cabinet pH sensor, an aerobic cabinet DO sensor and an aerobic cabinet UV254 sensor, wherein the regulating cabinet pH sensor and the regulating cabinet UV254 sensor are arranged in the regulating cabinet; the anoxic cabinet pH sensor and the anoxic cabinet DO sensor are arranged in the anoxic cabinet; the pH sensor of the aerobic cabinet, the DO sensor of the aerobic cabinet and the UV254 sensor of the aerobic cabinet are arranged in the aerobic cabinet, and the pH sensor of the aerobic cabinet is connected with a pH adjusting and dosing system.
4. The automatic bacteria culture system for a marine domestic sewage treatment apparatus according to claim 3, wherein: the adjusting cabinet pH sensor and the aerobic cabinet pH sensor are respectively used for detecting the pH value of sewage in the adjusting cabinet and the aerobic cabinet, and the aerobic cabinet pH sensor is connected with the pH adjusting and dosing system; the adjusting cabinet UV254 sensor and the aerobic cabinet UV254 sensor are respectively used for detecting COD concentration of sewage in the adjusting cabinet and the aerobic cabinet, and the detecting time of the adjusting cabinet UV254 sensor is synchronous with that of the aerobic cabinet UV254 sensor; the anoxic cabinet DO sensor and the aerobic cabinet DO sensor are respectively used for detecting the dissolved oxygen concentration of sewage in the anoxic cabinet and the aerobic cabinet and are connected with the aeration system through the electrical control system.
5. The automatic bacteria culture system for a marine domestic sewage treatment apparatus according to claim 3, wherein: the pH adjusting and dosing system comprises a pH adjusting and dosing pump, a pH adjusting medicine box and a pipeline, and is connected with the pH sensor of the aerobic cabinet through an electric control system; when the pH sensor of the aerobic cabinet detects that the pH value of the sewage in the aerobic cabinet exceeds a set value, the pH adjusting and dosing pump is automatically started, alkali liquor is dosed into the aerobic cabinet from the pH adjusting medicine box, the pH value of the sewage in the aerobic cabinet reaches a set range, and the pH adjusting and dosing pump is automatically stopped.
6. The automatic bacteria culture system for a marine domestic sewage treatment apparatus according to claim 1, wherein: the aeration system comprises a fan, a gas distributor, a pipeline, an anoxic cabinet aeration electric valve, an anoxic cabinet aeration pipe, an aerobic cabinet aeration adjusting electric valve, an aerobic cabinet aeration disc, a membrane cabinet aeration adjusting electric valve and a membrane cabinet aeration pipe, wherein the gas distributor is connected with the anoxic cabinet aeration electric valve and the anoxic cabinet aeration pipe through the pipeline; the aeration system adjusts the opening of the aerobic cabinet aeration electric valve through the detection data of an aerobic cabinet DO probe to adjust the dissolved oxygen of the aerobic cabinet within a control range; and the gas distributor is connected with the membrane cabinet aeration electric valve and the membrane cabinet aeration pipe through pipelines.
7. The automatic bacteria culture system for a marine domestic sewage treatment apparatus according to claim 1, wherein: the conveying system is used for connecting the adjusting cabinet and the anoxic cabinet and comprises a conveying pump inlet valve, a conveying pump, an electromagnetic flow meter, a conveying pump outlet electric valve, a conveying pump outlet check valve and a conveying pump return valve, the conveying system is connected with the liquid level sensor in the adjusting cabinet through an electric control system, the conveying pump is automatically started after sewage in the adjusting cabinet reaches the position of the liquid level sensor, and the conveying pump is automatically stopped when the liquid level is lower than the position of the low liquid level sensor.
8. The automatic bacteria culture system for a marine domestic sewage treatment apparatus according to claim 7, wherein: the output flow of the conveying pump is divided into water entering the anoxic cabinet and reflux flow; the water inlet amount of the oxygen deficiency cabinet is transmitted to an electrical control system according to the detected flow of the electromagnetic flowmeter, and is regulated and controlled by adjusting the opening of an electric valve at the outlet of the conveying pump.
9. The automatic bacteria culture system for a marine domestic sewage treatment apparatus according to claim 1, wherein: the membrane cabinet is internally provided with a membrane module and a membrane cabinet aeration pipe, and effluent of the membrane module is conveyed to the clear water cabinet through a suction pump; the clear water tank is internally provided with a high liquid level sensor, a middle liquid level sensor and a low liquid level sensor which are connected with a discharge system through an electrical control system.
10. The automatic bacteria culture system for a marine domestic sewage treatment apparatus according to claim 1, wherein: the discharge system is connected with each chamber of the adjusting cabinet, the anoxic cabinet, the aerobic cabinet, the membrane cabinet, the clear water cabinet and the sludge cabinet through discharge valves and pipelines; the reflux system comprises a gas distributor, an air stripping electric valve, a reflux electric valve, an aerobic cabinet, a reflux electric valve, a sludge cabinet and corresponding pipelines, wherein the gas distributor of the reflux system is connected with the aerobic cabinet through the air stripping electric valve, an air stripping pipe, the reflux electric valve, the aerobic cabinet, the gas distributor of the reflux system is connected with the sludge cabinet through the air stripping electric valve, the air stripping pipe, the reflux electric valve, the sludge cabinet, and the upper part of the sludge cabinet is connected with the anoxic cabinet through the pipelines.
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