CN216890273U - Automatic dosing system in MBR membrane system - Google Patents
Automatic dosing system in MBR membrane system Download PDFInfo
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- CN216890273U CN216890273U CN202122682665.3U CN202122682665U CN216890273U CN 216890273 U CN216890273 U CN 216890273U CN 202122682665 U CN202122682665 U CN 202122682665U CN 216890273 U CN216890273 U CN 216890273U
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Abstract
The utility model discloses an automatic dosing system in an MBR (membrane bioreactor) membrane system, and relates to the field of MBR membrane module maintenance and treatment equipment. Various defects of manual dosing operation are overcome, each dosing subsystem is designed to be used and standby, if the system fails, the failed system can be closed, the standby system can be started, and the subsystem is prevented from being closed due to maintenance failure, so that production is influenced; and the repaired fault system can be used as a standby system to continuously maintain continuous production. The automatic dosing system comprises a sodium hypochlorite dosing system, an acid dosing system and an alkali dosing system; the sodium hypochlorite dosing system comprises a sodium hypochlorite unloading pump, a sodium hypochlorite storage tank, a sodium hypochlorite backwashing dosing system, a sodium hypochlorite cleaning dosing system and a disinfecting dosing system; the acid dosing system comprises two acid dosing pumps; the alkali dosing system comprises two alkali dosing pumps. Has the advantages of reasonable design, convenient operation, high automation degree and the like.
Description
Technical Field
The utility model relates to the field of MBR membrane module maintenance and treatment equipment, in particular to an automatic dosing system in a 10-nanometer MBR membrane system.
Background
The MBR membrane technology is widely popularized and applied in China as a novel water treatment technology combining a biochemical technology and a separation technology. When an MBR membrane module serving as an MBR membrane system technology core separation device runs, mechanical impurity pollution, sludge hardening, inorganic pollution, organic pollution and biological and colloidal substance pollution can be generated by membrane filaments along with the lapse of time, so that the flux of membrane modules of core components of the membrane module is reduced, and the overall operation of a sewage plant is influenced. In order to maintain the flux stability of the membrane module, the membrane module needs to be periodically subjected to online maintenance chemical dosing backwashing. However, flux reduction still inevitably occurs after the membrane module device is operated for a period of time, so that the requirement of the designed water yield cannot be met, the daily operation is influenced, and the membrane module device needs to be subjected to restorative chemical cleaning. The recovery chemical cleaning basically has an on-line mode and an off-line mode, so the related dosing mode is generally divided into an automatic dosing mode and a manual dosing mode. Inorganic pollution, organic pollution and biological and colloidal substance pollution of the membrane component can be cleaned by soaking with proper chemical agents, and the membrane flux is recovered. Different dosing systems are designed according to the attributes of pollutants so as to meet the requirements of chemical cleaning.
At present, an MBR (membrane bioreactor) membrane system generally adopts an automatic dosing mode when maintenance chemical dosing backwashing is carried out, and a manual dosing mode is adopted when recovery chemical dosing cleaning is carried out. The manual dosing operation is inconvenient, certain danger exists, and the labor intensity of operators is high. In addition, the existing MBR membrane system dosing system is basically an operating system which is independently operated in maintainability and recoverability, and the situation of inconvenient operation exists.
SUMMERY OF THE UTILITY MODEL
Aiming at the problems, the utility model provides an automatic dosing system in an MBR membrane system, which solves various defects existing in manual dosing operation.
The technical scheme of the utility model is as follows: the automatic medicine adding system comprises a sodium hypochlorite medicine adding system 01, an acid medicine adding system 02 and an alkali medicine adding system 03;
the sodium hypochlorite dosing system 01 comprises a sodium hypochlorite unloading pump P11, a sodium hypochlorite storage tank T01, a sodium hypochlorite backwashing dosing system, a sodium hypochlorite cleaning dosing system and a disinfecting dosing system;
the sodium hypochlorite feeding vehicle is connected to a sodium hypochlorite dosing system 01 through a sodium hypochlorite joint V101, the feeding hole of a sodium chlorate discharging pump P11 is connected with the sodium hypochlorite joint V101, and the discharging hole of the sodium hypochlorite discharging pump P11 is connected with the dosing hole of a sodium hypochlorite storage tank T01;
the water replenishing port of the sodium hypochlorite storage tank T01 is connected with a factory tap water network pipe through a pipeline, and the medicine outlet of the sodium hypochlorite storage tank T01 is respectively connected with a sodium hypochlorite backwashing medicine adding system, a sodium hypochlorite cleaning medicine adding system and a disinfection medicine adding system through pipelines;
the sodium hypochlorite backwashing medicine adding system comprises two sodium hypochlorite backwashing medicine adding pumps, inlets of the two sodium hypochlorite backwashing medicine adding pumps are connected with a medicine outlet of a sodium hypochlorite storage tank T01, and outlets of the two sodium hypochlorite backwashing medicine adding pumps are connected with a pipeline mixer;
the sodium hypochlorite cleaning and dosing system comprises two sodium hypochlorite cleaning and dosing pumps, inlets of the two sodium hypochlorite cleaning and dosing pumps are connected with a medicine outlet of a sodium hypochlorite storage tank T01, and outlets of the two sodium hypochlorite cleaning and dosing pumps are connected with a pipeline mixer;
the disinfection and medicine feeding system comprises two disinfection tank medicine feeding pumps, the inlets of the two disinfection tank medicine feeding pumps are connected with the medicine outlet of a sodium hypochlorite storage tank T01, and the outlets of the two disinfection tank medicine feeding pumps are connected with the contact disinfection tank;
the acid dosing system 02 comprises an acid unloading pump P21, an acid storage tank T02 and two acid dosing pumps for one standby;
a citric acid feeding vehicle is connected to a sodium hypochlorite dosing system 01 through a citric acid joint V201, a feeding hole of an acid unloading pump P21 is connected with the citric acid joint V201, a discharging hole of the acid unloading pump P21 is connected with a dosing hole of an acid storage tank T02, and a water replenishing hole of the sodium hypochlorite storage tank T01 is connected with a factory tap water network pipe through a pipeline; the inlets of the two acid medicine adding pumps are connected with the medicine outlet of an acid storage tank T02, and the outlets of the two acid medicine adding pumps are connected with a pipeline mixer;
the alkali dosing system 03 comprises an alkali unloading pump P31, an alkali storage tank T03 and two alkali dosing pumps, wherein one alkali dosing pump is provided with one alkali unloading pump;
an alkali feeding vehicle is connected to an alkali dosing system 03 through an alkali joint V301, a feeding hole of an alkali unloading pump P31 is connected with the alkali joint V301, a discharging hole of the alkali unloading pump P31 is connected with a dosing hole of an alkali storage tank T03, and a water replenishing hole of the alkali storage tank T03 is connected with a factory tap water network pipe through a pipeline; the inlets of the two alkali drug-adding pumps are connected with the drug outlet of the alkali storage tank T03, and the outlets of the two alkali drug-adding pumps are connected with the pipeline mixer.
The top of the sodium hypochlorite storage tank T01 is provided with an exhaust hole, a dosing port and a water replenishing port, the bottom of the sodium hypochlorite storage tank T01 is provided with a dosing port and an exhaust port, and the upper part of the sodium hypochlorite storage tank T01 is provided with an overflow port;
and a medicine adding port of the sodium hypochlorite storage tank T01 is connected with a discharge port of a sodium chlorate discharging pump P11 through a pipeline. The water replenishing port of the sodium hypochlorite storage tank T01 is connected with a factory tap water network pipe through a pipeline, and the emptying port and the overflow port of the sodium hypochlorite storage tank T01 are connected to a collecting well.
The top of the acid storage tank T02 is provided with an exhaust hole, a dosing port and a water replenishing port, the bottom of the acid storage tank T02 is provided with a dosing port and a drain port, and the upper part of the acid storage tank T02 is provided with an overflow port;
the medicine feeding port of the acid storage tank T02 is connected with the discharge port of the acid medicine discharging pump P21 through a pipeline, the water replenishing port of the acid storage tank T02 is connected with a factory tap water network management pipe through a pipeline, and the emptying port and the overflow port of the acid storage tank T02 are connected to a collecting well.
The top of the alkali storage tank T03 is provided with an exhaust hole, a dosing port and a water replenishing port, the bottom of the alkali storage tank T03 is provided with a dosing port and a drain port, and the upper part of the alkali storage tank T03 is provided with an overflow port;
the chemical feeding port of the alkali storage tank T03 is connected with the discharge port of the alkali discharge pump P31 through a pipeline, the water replenishing port of the alkali storage tank T03 is connected with a factory tap water network management pipe through a pipeline, and the emptying port and the overflow port of the alkali storage tank T03 are both connected to a collecting well.
And safety valves are respectively connected between the inlet and the outlet of the sodium hypochlorite backwashing dosing pump and between the inlet and the outlet of the disinfecting tank dosing pump.
The inlet of the two sodium chlorate cleaning and dosing pumps and the two disinfecting pool dosing pumps are respectively connected with the medicine outlet of a sodium hypochlorite storage tank T01 through four Y-shaped filters.
Level meters are respectively arranged in the sodium hypochlorite storage tank T01, the acid storage tank T02 and the alkali storage tank T03;
between sodium hypochlorite backwash medicine system and the pipeline mixer, between sodium hypochlorite washs medicine system and the pipeline mixer, between disinfection medicine system and the contact disinfection pond, between acid medicine system 02 and the pipeline mixer, all be provided with flowmeter and pneumatic valve between alkali medicine system 03 and the pipeline mixer respectively.
The automatic medicine feeding system further comprises a PLC control system, and the sodium hypochlorite medicine discharging pump P11, the acid medicine discharging pump P21, the alkali medicine discharging pump P31, the two sodium hypochlorite backwashing medicine feeding pumps, the two sodium hypochlorite cleaning medicine feeding pumps, the two disinfection pool medicine feeding pumps, the two acid medicine feeding pumps, the two alkali medicine feeding pumps, all the liquid level meters, the flow meters and the pneumatic valves are connected with the PLC control system.
The automatic medicine adding system comprises a sodium hypochlorite medicine adding system, an acid medicine adding system, an alkali medicine adding system, a PLC control system and the like. The sodium hypochlorite dosing system comprises a sodium hypochlorite discharge pump, a sodium hypochlorite storage tank, a sodium hypochlorite backwashing dosing system, a sodium hypochlorite cleaning dosing system and a disinfection dosing system; the alkali dosing system comprises an alkali unloading pump, an alkali storage tank and an alkali cleaning dosing pump; the acid dosing system comprises an acid unloading pump, an acid storage tank and an acid adding cleaning medicine pump; the PLC control system comprises a cabinet body, a PLC, a touch screen, a frequency converter, electrical components and the like.
The working principle is as follows: the method comprises the steps of conveying a medicament into a storage tank by using a medicament discharge pump, adding the medicament into a pipeline mixer by using a metering pump or a magnetic pump according to the required medicament concentration, and mixing the medicament with reverse (cleaning) washing water to an adding point. In the process of adding the medicament, the device adds the medicament according to the set flow, and when the liquid level of the medicament in the storage tank drops to the set low liquid level, the device alarms and automatically stops adding the medicament.
The method comprises the following operation steps:
s1: unloading the medicine: the medicine conveying pipe of the feeding vehicle is connected with the input pipeline joint, the stop valve is opened, the discharging pump is started, and the medicine is conveyed into the storage tank. After the liquid level of the medicament reaches a set high level, the medicament discharging pump automatically stops, the relevant valve is closed, and the medicament discharging is stopped;
s2: adding medicine: calculating the adding flow of the medicament according to the concentration requirement of the added medicament, setting the adding flow, and starting a medicament adding system according to the specific operation steps of the equipment. The first operation needs to use a flow calibration column to calibrate the dosing flow, so that the metering accuracy of the flowmeter is ensured;
s3: stopping operation: and the dosing system automatically operates according to set parameters in an automatic mode. When the set dosing time is reached or the liquid level of the medicament is reduced to the set low liquid level, the system automatically stops dosing.
In the scheme, each dosing subsystem is designed to be used for standby, if the system fails, the failed system can be shut down, the standby system can be started, and the subsystem is prevented from being shut down due to maintenance failure, so that production is not influenced; and the repaired fault system can be used as a standby system to continuously maintain continuous production. On the whole, the scheme has a series of advantages of reasonable design, convenient operation, high automation degree, accurate dosing, no medicament waste and the like.
Drawings
FIG. 1 is a schematic diagram of the sodium hypochlorite dosing system,
figure 2 is a structural schematic diagram of a sodium chlorate backwashing dosing system,
FIG. 3 is a schematic diagram of the chemical feeding system for sodium hypochlorite cleaning,
figure 4 is a schematic diagram of the structure of the disinfection and medicine adding system,
figure 5 is a schematic diagram of the acid dosing system,
FIG. 6 is a schematic diagram of the structure of the base dosing system.
Detailed Description
In order to clearly explain the technical features of the present patent, the following detailed description of the present patent is provided in conjunction with the accompanying drawings.
An MBR membrane system automatic dosing system comprises a sodium hypochlorite dosing system 01, an acid dosing system 02, an alkali dosing system 03, a PLC control system and the like.
The sodium hypochlorite dosing system 01 comprises a sodium hypochlorite unloading pump P11, a sodium hypochlorite storage tank T01, a sodium hypochlorite backwashing dosing system, a sodium hypochlorite cleaning dosing system and a disinfecting dosing system;
the feed inlet of the sodium hypochlorite discharge pump P11 is connected with a sodium hypochlorite joint V101 through a pipeline, and a valve V102 is arranged on the connecting pipeline. Sodium hypochlorite unloads medicine pump P11 discharge gate pass through the pipeline with sodium hypochlorite storage tank T01 adds the medicine mouth and connects, is equipped with on the connecting tube check valve CV11, valve V104, valve V105, still installs on the connecting tube manometer PG11, the connecting tube with be equipped with between manometer PG11 valve V103. The sodium hypochlorite discharge pump P11 is connected with the PLC control system through a cable;
the top of the sodium hypochlorite storage tank T01 is provided with an exhaust hole, a dosing port and a water replenishing port, the bottom of the sodium hypochlorite storage tank T01 is provided with a dosing port and an evacuation port, and the upper part of the sodium hypochlorite storage tank T01 is provided with an overflow port. And a sodium hypochlorite storage tank T01 medicine adding port is connected with a discharge port of a sodium chlorate discharge pump P11 through a pipeline. The water replenishing port of the sodium hypochlorite storage tank T01 is connected with a factory tap water network pipe through a pipeline, and the connecting pipeline is provided with a valve V106. And a valve V107 is arranged on a drainage port of the sodium hypochlorite storage tank T01, and is connected with an overflow port through a pipeline and connected to a collecting well. The sodium hypochlorite storage tank T01 goes out the medicine mouth and is connected with sodium hypochlorite backwash medicine system, sodium hypochlorite washing medicine system and disinfection medicine system feed inlet respectively through the pipeline, is equipped with valve V108, flow calibration post L01 on the connecting tube. The liquid level meter L11 is arranged in the sodium hypochlorite storage tank T01, and the liquid level meter L11 is connected with the PLC control system through a cable;
the sodium hypochlorite backwashing dosing system comprises two sets of devices, namely a using device and a standby device, and mainly comprises a sodium hypochlorite backwashing dosing pump P12/13, a Y-shaped filter Y01/02, a safety valve SV01/02, a back pressure valve BPV01/02, a damper ZN01/02, a pressure gauge PG12/13, a pneumatic valve PV11, a flow meter F11 and other valves and the like. The inlet of the sodium hypochlorite backwashing dosing pump P12/13 is connected with the valve V108 through a pipeline, and the valve V109/110 and the Y-shaped filter Y01/02 are arranged on the connecting pipeline. An inlet of the sodium hypochlorite backwashing dosing pump P12/13 is connected with an outlet of the sodium hypochlorite backwashing dosing pump P12/13 through a pipeline, and the safety valve SV01/02 is arranged on a connecting pipeline. The outlet of the sodium hypochlorite backwashing dosing pump P12/13 is connected with the damper ZN01/02 through a pipeline, and the valve V111/114 is arranged on the connecting pipeline. The outlet of the sodium hypochlorite backwashing dosing pump P12/13 is connected with the flowmeter F11 through a pipeline, the backpressure valve BPV01/02 and the valve V113/V116 are arranged on a connecting pipeline, the pressure gauge PG12/13 is arranged on the connecting pipeline, and the valve V112/115 is arranged between the connecting pipeline and the pressure gauge PG 12/13. The flow meter F11 is connected to a line mixer via a line provided with the pneumatic valve PV 11. The metering pump P12/13 is connected with the PLC control system through a cable, the flow meter F11 is connected with the PLC control system through a cable, and the pneumatic valve PV11 is connected with the PLC control system through a cable and is connected with a compressed air system through a pipeline.
The sodium hypochlorite cleaning and dosing system comprises two sets of devices, namely a sodium hypochlorite cleaning and dosing pump P14/15, a check valve CV12/13, a pressure gauge PG14/15, a pneumatic valve PV12, a flow meter F12 and other valves. The inlet of the sodium hypochlorite cleaning dosing pump P14/15 is connected with the valve V108 through a pipeline, and the connecting pipeline is provided with the valve V120/117. The outlet of the sodium hypochlorite cleaning dosing pump P14/15 is connected with the flow meter F12 through a pipeline, the connecting pipeline is provided with a check valve CV12/13 and a valve V122/V119, the connecting pipeline is provided with the pressure gauge PG14/15, and the valve V121/118 is arranged between the connecting pipeline and the pressure gauge PG 14/15. The flow meter F12 is connected to a line mixer via a line provided with the pneumatic valve PV 12. Sodium hypochlorite washs with medicine pump P14/15 through the cable conductor with PLC control system connects, flowmeter F12 through the cable conductor with PLC control system connects, pneumatic valve PV12 through the cable conductor with PLC control system connects and passes through pipeline and compressed air headtotail.
The disinfection medicine adding system comprises two sets of devices, namely a one-use one-standby device, and mainly comprises a disinfection pool medicine adding pump P16/17, a Y-shaped filter Y03/04, a safety valve SV03/04, a back pressure valve BPV03/04, a damper ZN03/04, a pressure gauge PG16/17, a flow meter F13 and other valves and the like. An inlet of the disinfection tank dosing pump P16/17 is connected with the valve V108 through a pipeline, and the valve V127/123 and the Y-shaped filter Y03/04 are arranged on a connecting pipeline. An inlet of the disinfection tank dosing pump P16/17 is connected with an outlet of the disinfection tank dosing pump P16/17 through a pipeline, and the safety valve SV03/04 is arranged on a connecting pipeline. The outlet of the disinfection tank dosing pump P16/17 is connected with the damper ZN03/04 through a pipeline, and the valve V128/124 is arranged on the connecting pipeline. The outlet of the disinfection tank dosing pump P16/17 is connected with the flowmeter F13 through a pipeline, the connecting pipeline is provided with the back pressure valve BPV03/04 and the valve V130/V126, the connecting pipeline is provided with the pressure gauge PG16/17, and the valve V129/125 is arranged between the connecting pipeline and the pressure gauge PG 16/17. The flow meter F13 is connected to the contact sterilization tank by a pipe. The metering pump P16/17 is connected with the PLC control system through a cable, and the flow meter F13 is connected with the PLC control system through a cable.
The acid medicine adding system 02 comprises the acid medicine discharging pump P21, the acid storage tank T02, the acid medicine adding pump P22/23, the flow meter F21, the pneumatic valve PV21 and the like.
The feed inlet of the acid unloading pump P21 is connected with a citric acid joint V201 through a pipeline, and a valve V202 is arranged on the connecting pipeline. The discharge port of the acid unloading pump P21 is connected with the acid storage tank T02 dosing port through a pipeline, the connecting pipeline is provided with a check valve CV21, a valve V204 and a valve V205, the connecting pipeline is further provided with a pressure gauge PG21, and the valve V203 is arranged between the connecting pipeline and the pressure gauge PG 21. The acid unloading pump P21 is connected with the PLC control system through a cable;
the top of the acid storage tank T02 is provided with an exhaust hole, a dosing port and a water replenishing port, the bottom is provided with a dosing port and a drain port, and the upper part is provided with an overflow port. And the acid storage tank T02 medicine adding port is connected with the discharge port of the acid medicine unloading pump P21 through a pipeline. The acid storage tank T02 water replenishing port is connected with a factory tap water network pipe through a pipeline, and the connecting pipeline is provided with a valve V206. And a valve V207 is arranged on a drain port of the acid storage tank T02 and is connected with an overflow port through a pipeline and connected to a collecting well. The medicine outlet of the acid storage tank T02 is respectively connected with the inlet of an acid medicine adding pump P22/23 through a pipeline, and the connecting pipeline is provided with the valve V208 and the flow calibration column L02. The liquid level meter L21 is arranged in the acid storage tank T02, and the liquid level meter L21 is connected with the PLC control system through a cable;
the acid dosing pump P22/23 is used for one and two sets, the inlet of the acid dosing pump P22/23 is connected with the valve V208 through a pipeline, and the valve V210/209 is arranged on the connecting pipeline. The outlet of the dosing pump P22/23 is connected with the flow meter F21 through a pipeline, the connecting pipeline is provided with the check valve CV22/23 and the valve V214/212, the pressure gauge PG22/23 is installed on the connecting pipeline, and the valve V213/211 is arranged between the connecting pipeline and the pressure gauge PG 22/23. The flow meter F21 is connected to a line mixer via a line provided with the pneumatic valve PV 21. The metering pump P22/23 is connected with the PLC control system through a cable, the flow meter F21 is connected with the PLC control system through a cable, and the pneumatic valve PV21 is connected with the PLC control system through a cable and is connected with a compressed air system through a pipeline.
The alkali dosing system 03 comprises the alkali unloading pump P31, the alkali storage tank T03, the alkali dosing pump P32/33, the flow meter F31, the pneumatic valve PV31 and the like.
The feed inlet of the alkali unloading pump P31 is connected with an alkali joint V301 through a pipeline, and a valve V302 is arranged on the connecting pipeline. The discharge port of the alkali unloading pump P31 is connected with the alkali storage tank T03 dosing port through a pipeline, the connecting pipeline is provided with a check valve CV31, a valve V304 and a valve V305, the connecting pipeline is further provided with a pressure gauge PG31, and the valve V303 is arranged between the connecting pipeline and the pressure gauge PG 31. The acid unloading pump P31 is connected with the PLC control system through a cable;
the top of the alkali storage tank T03 is provided with an exhaust hole, a dosing port and a water replenishing port, the bottom is provided with a dosing port and a drain port, and the upper part is provided with an overflow port. And the alkali storage tank T03 medicine adding port is connected with the discharge port of the alkali medicine discharge pump P31 through a pipeline. The alkali storage tank T03 water replenishing port is connected with a factory tap water network pipe through a pipeline, and the connecting pipeline is provided with a valve V306. And a valve V307 is arranged on a drain port of the alkali storage tank T03, and is connected with an overflow port through a pipeline and connected to a collecting well. The outlet of the alkali storage tank T03 is connected with the inlet of an alkali dosing pump P32/33 through a pipeline, and the connecting pipeline is provided with the valve V308 and the flow calibration column L03. The alkali storage tank T03 is internally provided with the liquid level meter L31, and the liquid level meter L31 is connected with the PLC control system through a cable;
the alkali dosing pump P32/33 is used for two sets, the inlet of the alkali dosing pump P32/33 is connected with the valve V308 through a pipeline, and the valve V310/309 is arranged on the connecting pipeline. The outlet of the dosing pump P32/33 is connected with the flow meter F31 through a pipeline, the check valve CV32/33 and the valve V314/312 are arranged on a connecting pipeline, the pressure gauge PG32/33 is arranged on the connecting pipeline, and the valve V313/311 is arranged between the connecting pipeline and the pressure gauge PG 32/33. The flow meter F31 is connected to a line mixer via a line provided with the pneumatic valve PV 31. The metering pump P32/33 is connected with the PLC control system through a cable, the flow meter F31 is connected with the PLC control system through a cable, and the pneumatic valve PV31 is connected with the PLC control system through a cable and is connected with a compressed air system through a pipeline.
The PLC control system comprises a cabinet body, a PLC, a touch screen, a frequency converter, electrical components and the like. The PLC control system is respectively connected with the pumps P11-17, P21-23, P31-33, the pneumatic valve PV11/12/21/31, the liquid level meter L11/21/31 and the flow meter F11/12/13/21/31 through electric cables.
While the utility model has been described in terms of its preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the utility model.
Claims (8)
1. An automatic medicine adding system in an MBR (membrane bioreactor) membrane system is characterized by comprising a sodium hypochlorite medicine adding system (01), an acid medicine adding system (02) and an alkali medicine adding system (03);
the sodium hypochlorite dosing system (01) comprises a sodium hypochlorite unloading pump (P11), a sodium hypochlorite storage tank (T01), a sodium hypochlorite backwashing dosing system, a sodium hypochlorite cleaning dosing system and a disinfection dosing system;
the sodium hypochlorite feeding vehicle is connected to a sodium hypochlorite dosing system (01) through a sodium hypochlorite joint (V101), a feeding hole of a sodium chlorate discharging pump (P11) is connected with the sodium hypochlorite joint (V101), and a discharging hole of the sodium hypochlorite discharging pump (P11) is connected with a dosing hole of a sodium hypochlorite storage tank (T01);
a water replenishing port of the sodium hypochlorite storage tank (T01) is connected with a factory tap water network pipe through a pipeline, and a medicine outlet of the sodium hypochlorite storage tank (T01) is respectively connected with a sodium hypochlorite backwashing medicine adding system, a sodium hypochlorite cleaning medicine adding system and a disinfection medicine adding system through pipelines;
the sodium hypochlorite backwashing medicine adding system comprises two sodium hypochlorite backwashing medicine adding pumps, the inlets of the two sodium hypochlorite backwashing medicine adding pumps are connected with the medicine outlet of a sodium hypochlorite storage tank (T01), and the outlets of the two sodium hypochlorite backwashing medicine adding pumps are connected with a pipeline mixer;
the sodium hypochlorite cleaning and dosing system comprises two sodium hypochlorite cleaning and dosing pumps, inlets of the two sodium hypochlorite cleaning and dosing pumps are connected with a medicine outlet of a sodium hypochlorite storage tank (T01), and outlets of the two sodium hypochlorite cleaning and dosing pumps are connected with a pipeline mixer;
the disinfection and medicine feeding system comprises two disinfection tank medicine feeding pumps, the inlets of the two disinfection tank medicine feeding pumps are connected with the medicine outlet of a sodium hypochlorite storage tank (T01), and the outlets of the two disinfection tank medicine feeding pumps are connected with the contact disinfection tank;
the acid dosing system (02) comprises an acid unloading pump (P21), an acid storage tank (T02) and two acid dosing pumps which are used for one acid and one drug dosing pump;
the citric acid feeding vehicle is connected to a sodium hypochlorite dosing system (01) through a citric acid joint (V201), a feeding hole of an acid unloading pump (P21) is connected with the citric acid joint (V201), a discharging hole of the acid unloading pump (P21) is connected with a dosing hole of an acid storage tank (T02), and a water replenishing hole of the sodium hypochlorite storage tank (T01) is connected with a factory tap water network pipe through a pipeline; the inlets of the two acid medicine adding pumps are connected with the medicine outlet of an acid storage tank (T02), and the outlets of the two acid medicine adding pumps are connected with a pipeline mixer;
the alkali dosing system (03) comprises an alkali unloading pump (P31), an alkali storage tank (T03) and two alkali dosing pumps for one standby;
an alkali feeding vehicle is connected to an alkali dosing system (03) through an alkali joint (V301), a feeding hole of an alkali unloading pump (P31) is connected with the alkali joint (V301), a discharging hole of the alkali unloading pump (P31) is connected with a dosing hole of an alkali storage tank (T03), and a water replenishing hole of the alkali storage tank (T03) is connected with a factory tap water network pipe through a pipeline; the inlets of the two alkali drug-adding pumps are connected with the drug outlet of an alkali storage tank (T03), and the outlets of the two alkali drug-adding pumps are connected with a pipeline mixer.
2. The automatic dosing system of the MBR membrane system of claim 1, wherein the top of the sodium hypochlorite storage tank (T01) is provided with an exhaust hole, a dosing port and a water replenishing port, the bottom of the sodium hypochlorite storage tank (T01) is provided with a dosing port and an exhaust port, and the upper part of the sodium hypochlorite storage tank (T01) is provided with an overflow port;
the feeding port of the sodium hypochlorite storage tank (T01) is connected with the discharge port of a sodium chlorate discharging pump (P11) through a pipeline; the water replenishing port of the sodium hypochlorite storage tank (T01) is connected with a factory tap water network pipe through a pipeline, and the emptying port and the overflow port of the sodium hypochlorite storage tank (T01) are connected to a collecting well.
3. The automatic dosing system of an MBR membrane system according to claim 1, wherein the top of the acid storage tank (T02) is provided with an exhaust hole, a dosing port and a water replenishing port, the bottom of the acid storage tank (T02) is provided with a dosing port and an exhaust port, and the upper part of the acid storage tank (T02) is provided with an overflow port;
the feeding port of the acid storage tank (T02) is connected with the discharge port of the acid unloading pump (P21) through a pipeline, the water replenishing port of the acid storage tank (T02) is connected with a factory tap water network pipe through a pipeline, and the emptying port and the overflow port of the acid storage tank (T02) are connected to a collecting well.
4. The automatic dosing system in the MBR membrane system according to claim 1, wherein the top of the alkali storage tank (T03) is provided with an exhaust hole, a dosing port and a water replenishing port, the bottom of the alkali storage tank (T03) is provided with a dosing port and an emptying port, and the upper part of the alkali storage tank (T03) is provided with an overflow port;
the feeding port of the alkali storage tank (T03) is connected with the discharge port of the alkali discharge pump (P31) through a pipeline, the water replenishing port of the alkali storage tank (T03) is connected with a factory tap water network pipe through a pipeline, and the emptying port and the overflow port of the alkali storage tank (T03) are connected to a collecting well.
5. The automatic dosing system of the MBR membrane system of any one of claims 1-4, wherein safety valves are respectively connected between the inlet and the outlet of the sodium hypochlorite backwashing dosing pump and between the inlet and the outlet of the disinfection tank dosing pump.
6. The automatic dosing system of an MBR membrane system according to any one of claims 1-4, wherein the inlet of two sodium chlorate cleaning dosing pumps and the inlet of two disinfection tank dosing pumps are respectively connected with the outlet of a sodium hypochlorite storage tank (T01) through four Y-shaped filters.
7. The automatic dosing system of MBR membrane system according to any of claims 1-4, wherein level meters are installed in the sodium hypochlorite storage tank (T01), the acid storage tank (T02) and the alkali storage tank (T03) respectively;
between sodium hypochlorite backwash medicine system and the pipeline mixer, between sodium hypochlorite washs medicine system and the pipeline mixer, between disinfection medicine system and the contact disinfection pond, between acid medicine system (02) and the pipeline mixer, all be provided with flowmeter and pneumatic valve between alkali medicine system (03) and the pipeline mixer respectively.
8. The automatic dosing system of claim 7, further comprising a PLC control system, wherein the sodium hypochlorite discharge pump (P11), the acid discharge pump (P21), the alkali discharge pump (P31), the two sodium hypochlorite backwashing dosing pumps, the two sodium hypochlorite cleaning dosing pumps, the two disinfection tank dosing pumps, the two acid dosing pumps, the two alkali dosing pumps, and all level meters, flow meters, and pneumatic valves are connected to the PLC control system.
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