CN212687861U - Accurate dephosphorization medicine system of sewage treatment plant - Google Patents
Accurate dephosphorization medicine system of sewage treatment plant Download PDFInfo
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- CN212687861U CN212687861U CN202021725527.8U CN202021725527U CN212687861U CN 212687861 U CN212687861 U CN 212687861U CN 202021725527 U CN202021725527 U CN 202021725527U CN 212687861 U CN212687861 U CN 212687861U
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Abstract
The utility model discloses an accurate dephosphorization medicine system of sewage treatment plant, the facility is thrown with controller all to the water feeding of system, two heavy pond effluent and total play water quality and water yield monitoring instrument, carbon source and dephosphorization agent throwing. The system fully collects water inlet and outlet and on-way phosphorus index concentration data, organically combines biological phosphorus removal, synchronous chemical phosphorus removal and post-chemical phosphorus removal, timely and efficiently adjusts the phosphorus removal agent and carbon source adding amount according to the quality and quantity of inlet water of the sewage plant and the process running condition, solves the problem of extensive adding of the sewage plant medicament, ensures more accurate medicament adding, reduces medicament adding cost while realizing stable standard outlet water, has higher automation degree, reduces manual operation intensity, and improves the fine management level of the sewage plant.
Description
Technical Field
The utility model relates to a sewage treatment technical field especially relates to an accurate dephosphorization charge system of sewage treatment plant.
Background
Phosphorus is one of the key factors causing eutrophication of water bodies. In recent years, with the increasingly prominent problem of water eutrophication, the reduction of phosphorus discharge in urban sewage treatment becomes a key link for controlling water eutrophication, and the efficient phosphorus removal in urban sewage treatment plants becomes an important research content in the field of sewage treatment.
The sewage phosphorus removal of the sewage plant comprises two methods of biological phosphorus removal and chemical phosphorus removal, the biological phosphorus removal is widely applied as an economic and effective phosphorus removal technology, but the pure biological phosphorus removal can not meet the increasingly strict discharge standard. Most sewage treatment plants adopt phosphorus removal measures which mainly adopt chemical phosphorus removal or mainly adopt biological phosphorus removal and take chemical phosphorus removal as assistance, and the purpose of deep phosphorus removal is achieved by assisting the chemical phosphorus removal.
At present, sewage plants generally adopt an operation mode of manually adjusting the dosage according to the quality of effluent water. And as the fluctuation of the quality and quantity of inlet water of a sewage plant is increased and the retention time is longer, the problems of untimely adjustment, large dosage of medicament, unstable water quality, high manual operation intensity, higher operation cost and the like exist in manual regulation and control of the dosage. Although some sewage plants try and apply chemical phosphorus removal automatic adding systems, a single factor control mode is adopted, and the accurate adding control of a phosphorus removal medicament is difficult to realize. Therefore, a comprehensive sewage plant precise phosphorus removal and medicine adding system needs to be established to solve the problems.
Disclosure of Invention
The utility model aims at providing an accurate dephosphorization medicine system of sewage treatment plant can realize that the accuracy of dephosphorization medicament is thrown and throw, improves sewage dephosphorization effect, reduces the dephosphorization cost, can improve the automatic level of sewage plant simultaneously, reduces manual operation intensity.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the device comprises a water inlet pump room, an anaerobic tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank, a middle lifting pump room, a reaction tank, a sedimentation tank, a filter tank and a water outlet channel which are connected in sequence; the aerobic tank is connected with a phosphorus removing agent adding device through a biochemical tank phosphorus removing agent adding diaphragm pump; the reaction tank is connected with the phosphorus removing agent adding device through a deep phosphorus removing agent adding diaphragm pump; the anaerobic tank is connected with a carbon source adding device through a carbon source adding diaphragm pump; the water inlet pump room is connected with the anaerobic tank through a water inlet lifting pump; the bottom of the secondary sedimentation tank is connected with the anaerobic tank through an external reflux pump; the middle lift pump room is connected with the reaction tank through a middle lift pump.
The water inlet pump room is provided with a water inlet quality and quantity monitoring instrument, the middle lifting pump room is provided with a secondary sedimentation tank water outlet quality monitoring instrument and a deep water inlet quantity monitoring instrument, and the water outlet channel is provided with a water outlet quality monitoring instrument.
The controller is respectively connected with the water inlet quality and quantity monitoring instrument, the secondary sedimentation tank water outlet quality and depth water inlet quantity monitoring instrument and the water outlet quality monitoring instrument and reads the data of the monitoring instruments; the controller is respectively electrically connected with the water inlet lifting pump, the middle lifting pump, the carbon source dosing diaphragm pump, the deep phosphorus removal agent dosing diaphragm pump and the biochemical pool phosphorus removal agent dosing diaphragm pump, reads flow data of the deep phosphorus removal agent dosing diaphragm pump and the biochemical pool phosphorus removal agent dosing diaphragm pump, and controls the starting and stopping of each pump and the flow size.
Furthermore, the water quality and quantity monitoring instrument of the water inlet pump room comprises a water quality monitoring instrument and a water quantity monitoring instrument of the water inlet which are respectively connected with the water inlet pump room.
Furthermore, the water inlet quality monitoring instrument is an online water inlet total phosphorus monitor, and the water inlet amount monitoring instrument is a water inlet electromagnetic flowmeter.
Furthermore, the secondary sedimentation tank outlet water quality monitoring instrument is a secondary sedimentation tank outlet orthophosphate on-line monitor, and the deep inlet water quantity monitoring instrument is a deep inlet water electromagnetic flowmeter.
Furthermore, the effluent quality monitoring instrument of the effluent channel is an effluent total phosphorus on-line monitor.
Further, the phosphorus removing agent adding device comprises a phosphorus removing agent storage tank, a phosphorus removing agent storage tank liquid level meter, a biochemical tank phosphorus removing agent adding electromagnetic flow meter and a deep phosphorus removing agent adding electromagnetic flow meter; the dephosphorization agent storage tank liquid level meter is positioned on the dephosphorization agent storage tank and is connected with the controller;
furthermore, the inlet ends of the biochemical tank phosphorus removal agent dosing diaphragm pump and the deep phosphorus removal agent dosing diaphragm pump are respectively connected with a phosphorus removal agent storage tank, the outlet end of the biochemical tank phosphorus removal agent dosing diaphragm pump is connected with a biochemical tank phosphorus removal agent dosing electromagnetic flowmeter, and the outlet end of the deep phosphorus removal agent dosing diaphragm pump is connected with a deep phosphorus removal agent dosing electromagnetic flowmeter; an outlet end pipeline of the biochemical pool phosphorus removing agent dosing electromagnetic flow meter is laid to the water outlet end of the aerobic pool, and an outlet end pipeline of the deep phosphorus removing agent dosing electromagnetic flow meter is laid to the water inlet end of the reaction pool; the biochemical tank phosphorus removal agent dosing electromagnetic flow meter and the deep phosphorus removal agent dosing electromagnetic flow meter are both connected with the controller.
Further, the carbon source adding device comprises a carbon source storage tank, a carbon source storage tank liquid level meter and an anaerobic pool carbon source adding electromagnetic flow meter; and a carbon source storage tank liquid level meter is arranged on the carbon source storage tank and is connected with the controller.
Furthermore, the inlet end of the carbon source dosing diaphragm pump is connected with a carbon source storage tank, the outlet end of the carbon source dosing diaphragm pump is connected with an anaerobic tank carbon source dosing electromagnetic flowmeter, and an outlet end pipeline of the anaerobic tank carbon source dosing electromagnetic flowmeter is laid to the anaerobic tank; the anaerobic tank carbon source dosing electromagnetic flow meter is connected with the controller.
Further, still include touch-sensitive screen and host computer, touch-sensitive screen and controller electricity are connected, the host computer with the controller is connected with the industry switch electricity respectively, the host computer with the controller passes through the industry switch network deployment and the communication is connected, the controller respectively through the converter with intake the elevator pump middle elevator pump the carbon source adds the medicine diaphragm pump degree of depth phosphorus removal agent adds the medicine diaphragm pump with biochemical pond phosphorus removal agent adds the medicine diaphragm pump and connects.
Compared with the prior art, the utility model discloses the beneficial effect who gains as follows:
the utility model discloses fully gather into water quality of water and water yield monitoring instrument, two heavy ponds play water quality monitoring instrument, degree of depth intake water yield monitoring instrument and play water quality monitoring instrument data, realize the continuous determination of business turn over water total phosphorus and middle process orthophosphate, can in time master into water total phosphorus load and each link phosphorus concentration condition, throw for the dephosphorization and throw and provide comprehensive data support, set up synchronous precipitation and rearmounted sediment dephosphorization simultaneously and throw the position point, one set of chemical dephosphorization accuracy adds medicine control system has been found, can effectively improve the accuracy that the dephosphorization was thrown and the stability of play water quality of water, can effectively reduce sewage plant dephosphorization cost simultaneously, and effectively improve the automatic level of sewage plant.
The utility model discloses still increased anaerobism pond carbon source and thrown feeder apparatus, when dephosphorization agent dosing system broke down, can in time open anaerobism pond carbon source and throw and add the pump, through improving biological dephosphorization efficiency, realized that total phosphorus is stable up to standard.
The utility model discloses the biochemical pond dephosphorization agent dosing system who sets up, except playing the effect of accurate dephosphorization, still has the function of improving sludge settling property, when the sludge settling property was relatively poor winter, it can improve sludge settling property to add the dephosphorization agent, prevents that the mud phenomenon from appearing running in two heavy ponds.
Drawings
Fig. 1 is a schematic diagram of a system structure of embodiment 3 of the present invention;
FIG. 2 is a schematic connection diagram of the controller of the present invention;
FIG. 3 is a schematic view of the pipeline connection of the phosphorus removing agent storage tank, the biochemical pool phosphorus removing agent dosing electromagnetic flow meter and the deep phosphorus removing agent dosing electromagnetic flow meter of the utility model.
In the drawings:
1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 depth phosphorus removal agent dosing electromagnetic flow meter, 16, 17, 18, middle, 19, 20, anaerobic tank, 21, 22, 23, 24, middle, 25, 26, 27, 28, outlet channel, 29 controller.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Example 1
An accurate dephosphorization dosing system of a sewage treatment plant comprises a water inlet pump room, an anaerobic tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank, a middle lift pump room, a reaction tank, a sedimentation tank, a filter tank and a water outlet channel which are connected in sequence; the device is characterized in that the aerobic tank is connected with a phosphorus removing agent adding device through a biochemical tank phosphorus removing agent adding diaphragm pump; the reaction tank is connected with the phosphorus removing agent adding device through a deep phosphorus removing agent adding diaphragm pump; the anaerobic tank is connected with a carbon source adding device through a carbon source adding diaphragm pump; the water inlet pump room is connected with the anaerobic tank through a water inlet lifting pump; the bottom of the secondary sedimentation tank is connected with the anaerobic tank through an external reflux pump; the middle lift pump room is connected with the reaction tank through a middle lift pump.
The water inlet pump room is provided with a water inlet quality and quantity monitoring instrument, the middle lifting pump room is provided with a secondary sedimentation tank water outlet quality monitoring instrument and a deep water inlet quantity monitoring instrument, and the water outlet channel is provided with a water outlet quality monitoring instrument.
The utility model discloses a to combine synchronous chemical dephosphorization and rearmounted chemical dephosphorization organic, make the stable up to standard of total phosphorus of effluent to can reduce the dephosphorization cost.
Example 2
An accurate dephosphorization dosing system of a sewage treatment plant comprises a sewage treatment facility, a medicament dosing facility, a water quality and water quantity monitor and a controller; the sewage treatment facility comprises a water inlet pump room 19, an anaerobic tank 20, an anoxic tank 21, an aerobic tank 22, a secondary sedimentation tank 23, a middle lift pump room 24, a reaction tank 25, a sedimentation tank 26, a filter tank 27 and a water outlet channel 28 which are connected in sequence; the agent adding facility comprises an aerobic tank phosphorus removing agent adding facility and a reaction tank phosphorus removing agent adding facility; the water inlet pump room 19 is provided with an inlet total phosphorus on-line monitor 1 and an inlet electromagnetic flowmeter 4, the middle lift pump room 24 is provided with a secondary sedimentation tank outlet orthophosphate on-line monitor 2 and a depth inlet electromagnetic flowmeter 5, and the outlet channel 28 is provided with an outlet total phosphorus on-line monitor 3; the controller 29 is a programmable logic controller PLC manufactured by Siemens, and is of a model number SIMATIC S7-200 Smart CPUSR 60. The medicament adding facility and the water quality and quantity monitoring instrument of the system are both connected with the controller 29; the system organically combines synchronous chemical phosphorus removal and postposition chemical phosphorus removal, can timely and efficiently adjust the adding amount of the phosphorus removal agent according to the change of the quality and quantity of inlet water of a sewage plant and the process running condition, realizes the accurate adding of the phosphorus removal agent, enables the total phosphorus of outlet water to stably reach the standard, can reduce the phosphorus removal cost, has higher automation degree, and can effectively reduce the operation intensity of workers.
Specifically, the utility model comprises a water inlet pump room 19, an anaerobic tank 20, an anoxic tank 21, an aerobic tank 22, a secondary sedimentation tank 23, a middle lift pump room 24, a reaction tank 25, a sedimentation tank 26, a filter tank 27 and a water outlet channel 28 which are connected in sequence; the aerobic tank 22 is connected with a phosphorus removing agent adding device through a biochemical tank phosphorus removing agent adding diaphragm pump 14; the reaction tank 25 is connected with the phosphorus removing agent adding device through a deep phosphorus removing agent adding diaphragm pump 15; the water inlet pump room 19 is connected with the anaerobic pool 20 through a water inlet lifting pump 16; the secondary sedimentation tank 23 is connected with the anaerobic tank 20 through an external reflux pump 17; the intermediate lift pump chamber 24 is connected to the reaction tank 25 via an intermediate lift pump 18.
The water inlet pump room 19 is provided with a water inlet quality and quantity monitoring instrument, the middle lifting pump room 24 is provided with a secondary sedimentation tank water outlet quality monitoring instrument and a depth water inlet quantity monitoring instrument, and the water outlet channel 28 is provided with a water outlet quality monitoring instrument.
The device also comprises a controller 29, wherein the controller 29 is respectively connected with the inlet water quality and quantity monitoring instrument, the secondary sedimentation tank outlet water quality monitoring instrument, the deep inlet water quantity monitoring instrument and the outlet water quality monitoring instrument and reads the data of the monitoring instruments; the controller 29 is respectively connected with the water inlet lift pump 16, the intermediate lift pump 18, the carbon source dosing diaphragm pump 13, the biochemical tank phosphorus removal agent dosing diaphragm pump 14 and the deep phosphorus removal agent dosing diaphragm pump 15, reads flow data of the biochemical tank phosphorus removal agent dosing diaphragm pump and can control the start and stop of each pump and the flow size of each pump.
The water inlet quality and quantity monitoring instrument of the water inlet pump room comprises a water inlet quality monitoring instrument and a water inlet quantity monitoring instrument which are respectively connected with the water inlet pump room. The water inlet quality monitoring instrument is an inlet total phosphorus on-line monitor 1, and the inlet water amount monitoring instrument is an inlet electromagnetic flowmeter 4.
The secondary sedimentation tank water outlet quality monitoring instrument of the lift pump room is a secondary sedimentation tank water outlet orthophosphate on-line monitor 2, and the deep water inlet quantity monitoring instrument is a deep water inlet electromagnetic flowmeter 5.
The effluent quality monitoring instrument of the effluent channel is an effluent total phosphorus on-line monitor 3.
The phosphorus removing agent adding device comprises a phosphorus removing agent storage tank 10, a phosphorus removing agent storage tank liquid level meter 12, a biochemical tank phosphorus removing agent dosing electromagnetic flow meter 7 and a deep phosphorus removing agent dosing electromagnetic flow meter 8; the inlet ends of the biochemical tank phosphorus removing agent dosing diaphragm pump 14 and the deep phosphorus removing agent dosing diaphragm pump 15 are respectively connected with a phosphorus removing agent storage tank 10, the outlet ends of the biochemical tank phosphorus removing agent dosing diaphragm pump 14 and the deep phosphorus removing agent dosing diaphragm pump 15 are respectively connected with a biochemical tank phosphorus removing agent dosing electromagnetic flow meter 7 and a deep phosphorus removing agent dosing electromagnetic flow meter 8, and the outlet end pipelines of the biochemical tank phosphorus removing agent dosing electromagnetic flow meter 7 and the deep phosphorus removing agent dosing electromagnetic flow meter 8 are respectively paved to the water outlet end of an aerobic tank 22 and the water inlet end of a reaction tank 25; the biochemical tank phosphorus removal agent dosing electromagnetic flow meter 7 and the deep phosphorus removal agent dosing electromagnetic flow meter 8 are both connected with a controller 29.
The phosphorus removing agent storage tank liquid level meter 12 is arranged on the phosphorus removing agent storage tank 10 and is connected with the controller 29, the controller 29 can display the liquid level of the agent in the phosphorus removing agent storage tank 10, and an operator can master the residual amount of the agent in the phosphorus removing agent storage tank 10 in real time so as to reasonably arrange the delivery of the agent.
The middle lift pump room 24 is connected with the reaction tank 25 through the middle lift pump 18, a deep water inlet electromagnetic flow meter 5 is arranged on a pipeline between the middle lift pump 18 and the reaction tank 25, the deep water inlet electromagnetic flow meter 5 is connected with the controller 29, the controller 29 can read the reading of the deep water inlet electromagnetic flow meter 5, and the flow of the middle lift pump 18 can be controlled. The control flow of the controller of the embodiment is as follows:
the controller 29 automatically calculates the adding amount of the synchronous precipitation phosphorus removing agent in the biochemical tank and the adding amount of the deep postposition precipitation phosphorus removing agent according to the readings of the water inlet total phosphorus on-line monitor 1, the water inlet electromagnetic flowmeter 4, the secondary sedimentation tank water outlet orthophosphate on-line monitor 2, the deep water inlet electromagnetic flowmeter 5 and the water outlet total phosphorus on-line monitor 3. The adding amount of the synchronous precipitation phosphorus removal agent in the biochemical pool is the amount of the phosphorus removal agent which is conveyed to the aerobic pool by the phosphorus removal agent storage tank 10 through the phosphorus removal agent adding diaphragm pump 14 in the biochemical pool; the dosage of the deep postposition precipitation phosphorus removal agent is the phosphorus removal agent delivered to the reaction tank 25 by the phosphorus removal agent storage tank 10 through the deep phosphorus removal agent dosing diaphragm pump 15.
The adding amount of the synchronous precipitation phosphorus removal agent in the biochemical tank is automatically calculated according to the total phosphorus load of inlet water, the biological phosphorus removal rate and the set target value of the concentration of orthophosphate in outlet water of the secondary sedimentation tank, and the set target value of the concentration of the total phosphorus in outlet water of the secondary sedimentation tank is 1 mg/L. When the readings of the total phosphorus inflow online monitor 1, the electromagnetic flowmeter for inflow 4 and the online monitor for orthophosphate from the secondary sedimentation tank 2 change, the controller 29 automatically calculates the addition amount of the phosphorus removing agent according to a preset program and instructs the phosphorus removing agent dosing diaphragm pump 14 of the biochemical tank to dose according to the calculated flow. Specifically, when the synchronous precipitation phosphorus removal load (total phosphorus concentration of inlet water x inlet water flow rate-total phosphorus concentration of inlet water x biological phosphorus removal rate-outlet water orthophosphate set concentration of secondary precipitation tank x inlet water flow rate) is increased, the controller 29 increases the frequency of the biochemical tank phosphorus removal agent dosing diaphragm pump 14, the dosage is increased, and when the synchronous precipitation phosphorus removal load is reduced, the controller 29 reduces the frequency of the biochemical tank phosphorus removal agent dosing diaphragm pump 14, and the dosage is reduced.
The control system of the deep postposition precipitation phosphorus removal agent is divided into feedforward control and feedback control, and the feedforward control and the feedback control both belong to the controller 29. Setting the target value of the total phosphorus of the effluent to be 0.3mg/L, executing a feedback program when the total phosphorus of the effluent is more than or equal to 0.3mg/L, and executing a feedforward program when the total phosphorus of the effluent is less than or equal to 0.3 mg/L. The feed-forward control system automatically calculates the dosing amount of the post-positioned precipitation phosphorus removal agent according to the readings of the deep water inlet electromagnetic flow meter 5, the secondary sedimentation tank water outlet orthophosphate on-line monitor 2 and the water outlet total phosphorus on-line monitor 3, and indicates the dosing of the deep phosphorus removal agent dosing diaphragm pump 15 according to the calculated flow. And the feedback control system carries out feedback regulation according to the deviation of the total phosphorus concentration of the effluent and the target value, the PID regulation is adopted for the feedback regulation, and the feedback control system automatically calculates the dosing amount and indicates the deep phosphorus removal agent dosing diaphragm pump 15 to regulate the dosing flow.
The utility model discloses fully gather the inflow water yield, the degree of depth inflow water yield, advance, data such as total phosphorus on-line monitoring appearance of play water and two heavy pond effluent orthophosphate on-line monitoring appearance, realize the continuous determination of business turn over water total phosphorus and middle process orthophosphate, can in time master into water total phosphorus load and each link phosphorus concentration condition, throw for the dephosphorization and throw and provide comprehensive data support, set up synchronous precipitation and postposition simultaneously and deposit dephosphorization and throw the position point, one set of chemical dephosphorization accuracy adds medicine control system has been found, can effectively improve the accuracy nature that the dephosphorization was thrown and throw the stability of water quality, can effectively reduce sewage plant dephosphorization cost and manual operation intensity simultaneously.
The utility model discloses combine two heavy pond effluent orthophosphate on-line monitoring appearance control concentration scientific and reasonable to regulate and control biochemical pond and degree of depth phosphorus removal agent input volume, improved the coprocessing effect of synchronous sediment and rearmounted sediment chemical phosphorus removal.
The utility model discloses the biochemical pond dephosphorization agent dosing system who sets up, except playing the effect of accurate dephosphorization, still has the function of improving sludge settling property, when the sludge settling property was relatively poor winter, it can improve sludge settling property to add the dephosphorization agent, prevents that the mud phenomenon from appearing running in two heavy ponds.
Meanwhile, the phosphorus removal agent is synchronously precipitated and removed, and the phosphorus removal agent is accumulated in the circulation of a biochemical system, so that when the concentration of orthophosphate in the effluent of the secondary sedimentation tank is about 1mg/L for a long time, the dosing can be considered to be stopped, the phosphorus removal agent is added when the concentration of the orthophosphate rises, the intermittent dosing can avoid the accumulation of the agent in the sludge, the reduction of the biological phosphorus removal efficiency is avoided, the dosage of the phosphorus removal agent can be reduced, and the efficient synergy of the biological phosphorus removal and the synchronous chemical phosphorus removal is realized.
Example 3
As shown in fig. 1-3, the present embodiment is different from embodiment 2 in that the present embodiment further includes a carbon source adding device, which includes a carbon source storage tank 9, a carbon source adding diaphragm pump 13, and an anaerobic tank carbon source adding electromagnetic flow meter 6, which are connected in sequence, the other end of the anaerobic tank carbon source adding electromagnetic flow meter is connected to the anaerobic tank 20, the carbon source storage tank 9 is installed with a carbon source storage tank liquid level meter 11, and the other end of the carbon source storage tank liquid level meter 11 is connected to the controller 29. The specific connection relationship is as follows: the inlet end of the anaerobic tank carbon source dosing diaphragm pump 13 is connected with the carbon source storage tank 9 through a pipeline, the outlet end of the anaerobic tank carbon source dosing diaphragm pump 13 is connected with the anaerobic tank carbon source dosing electromagnetic flow meter 6 through a pipeline, the pipeline at the outlet end of the anaerobic tank carbon source dosing electromagnetic flow meter 6 is laid to the water inlet end of the anaerobic tank 20, the anaerobic tank carbon source dosing diaphragm pump 13 and the anaerobic tank carbon source dosing electromagnetic flow meter 6 are both electrically connected with the controller 29, and the controller 29 can read flow meter data and control the start and stop of the diaphragm pump and the flow rate.
The carbon source storage tank liquid level meter 11 is arranged on the carbon source storage tank 9, the carbon source storage tank liquid level meter 11 is connected with the controller 29, the controller 29 can display the liquid level of the medicament in the carbon source storage tank 9, and an operator can master the medicament residual amount condition of the carbon source storage tank 9 in real time so as to reasonably arrange medicament delivery.
The water inlet lift pump 16 is connected with a controller 29, and the controller 29 can control the start and stop of the water inlet lift pump 16 and the flow rate.
The controller 29 is a programmable logic controller PLC manufactured by Siemens, and is of a model number SIMATIC S7-200 Smart CPUSR 60.
This controller is equipped with bus communication, ethernet communication port and IO input, IO output, the bus communication port of controller is connected with monitor, flowmeter and level gauge electricity respectively, specifically, the bus communication port of controller respectively with the monitor: an online monitor 1 for total phosphorus in water inflow, an online monitor 2 for orthophosphate in effluent of a secondary sedimentation tank, an online monitor 3 for total phosphorus in effluent and flowmeters, namely an electromagnetic flowmeter 4 for water inflow, an electromagnetic flowmeter 5 for water inflow in depth, an electromagnetic flowmeter 6 for carbon source dosing of an anaerobic tank, an electromagnetic flowmeter 7 for phosphorus removal agent dosing of a biochemical tank, an electromagnetic flowmeter 8 for phosphorus removal agent dosing of depth and a liquidometer, namely a carbon source storage tank liquidometer 11 and a phosphorus removal agent storage tank liquidometer 12 are electrically connected.
The controller outputs a control signal to the actuator through an output end, and the control device adjusts the operating parameters of the actuator through a built-in program of the control device and controls the water treatment process in real time; the executor of the embodiment is a pump for each link of water treatment, such as a water inlet lift pump, the middle lift pump, the carbon source dosing diaphragm pump, the deep phosphorus removal agent dosing diaphragm pump and the biochemical pool phosphorus removal agent dosing diaphragm pump. The output end of the control device is connected with the frequency converters corresponding to the pumps, and the control device transmits rotating speed control signals to the frequency converters and realizes the control of the water outlet flow of the pumps through different rotating speeds of the pumps.
The water inlet lifting pump, the middle lifting pump, the carbon source dosing diaphragm pump, the deep phosphorus removal agent dosing diaphragm pump and the biochemical pool phosphorus removal agent dosing diaphragm pump are respectively connected with a frequency converter, and the frequency converters connected through the water inlet lifting pump are connected with a controller communication bus, wherein the frequency converters are all produced by ABB company and have the model of ACS580-01-07A2-4(3 KW).
The frequency converters connected with the water inlet lifting pump, the middle lifting pump, the carbon source dosing diaphragm pump, the deep phosphorus removal agent dosing diaphragm pump and the biochemical pond phosphorus removal agent dosing diaphragm pump are respectively marked as a first frequency converter, a second frequency converter, a third frequency converter, a fourth frequency converter and a fifth frequency converter.
Preferably, controller 29 still is connected with touch-sensitive screen and host computer, touch-sensitive screen and controller electricity are connected, the host computer with the controller is connected with the industry switch electricity respectively, the host computer with the controller passes through the industry switch network deployment and the communication is connected, the controller respectively through the converter with advance water elevator pump the middle elevator pump carbon source adds the medicine diaphragm pump degree of depth phosphorus removal agent adds the medicine diaphragm pump with biochemical pond phosphorus removal agent adds the medicine diaphragm pump and connects. The touch screen is used for modifying the operation parameters and displaying the detection data, and flow parameters can be adjusted in a targeted manner in practical application, so that a certain technical effect is achieved, and at the moment, input operation can be performed through the touch screen. The touch screen is also used for displaying detection data from a monitor, a flowmeter and a liquid level meter, so that a worker operating on the site can know the running state of the current water treatment system at a glance. The touch screen and the controller are connected through a bus communication cable. The touch panel of the present embodiment is a touch panel manufactured by Siemens, model number 6AV 6648-0 CE11-3AX0 (10 inches).
The upper computer is in communication connection with the controller. The upper computer and the controller are both arranged in the same local area network, the local area network forms an optical fiber Ethernet through an industrial switch, and the controller and the upper computer are connected with the industrial switch through optical fibers respectively to realize stable high-speed communication between each other. The controller transmits signal data acquired by each communication port from the monitor, the flowmeter and the liquid level meter and control signals output by the output end to the upper computer in a message mode in a high-speed real-time manner, and the upper computer displays detection data acquired by the input end of the controller and output end signals in a configuration animation mode, so that a worker beside the upper computer can visually know the current running state of the water treatment system, and the worker does not need to run and patrol on the site of the water treatment system. The industrial exchanger of the embodiment is MOXA brand and EDS-205B-T model.
The control flow of the controller in this embodiment 3 is as follows:
when the phosphorus removal agent adding system fails and the phosphorus removal agent cannot be normally added, the controller 29 controls the anaerobic tank carbon source adding diaphragm pump 13 to add a carbon source to the anaerobic tank 20, and controls the water inlet lifting pump 19 to properly reduce the frequency and reduce the water inlet amount if necessary; the adding amount of the carbon source is determined according to the comparison between the reading of the secondary sedimentation tank effluent orthophosphate on-line monitor 2 and the set value of the concentration of the secondary sedimentation tank effluent orthophosphate, and the set value of the concentration of the secondary sedimentation tank effluent orthophosphate is 0.3 mg/L; the reading of the secondary sedimentation tank effluent orthophosphate on-line monitor 2 is fed back to the controller 29, when the reading of the secondary sedimentation tank effluent orthophosphate on-line monitor is more than 0.3mg/L, the controller 29 instructs the anaerobic tank carbon source dosing diaphragm pump 13 to increase the dosing amount, and when the reading of the secondary sedimentation tank effluent orthophosphate on-line monitor is less than 0.2mg/L, the controller 29 instructs the anaerobic tank carbon source dosing diaphragm pump 13 to reduce the dosing flow.
The utility model discloses the anaerobic tank carbon source of increase throws feeder apparatus, this system will be biological dephosphorization, synchronous chemical dephosphorization and rearmounted chemical dephosphorization combine organically, can effectively improve the biological dephosphorization efficiency of sewage plant, ensure that the stable up to standard of water total phosphorus, sewage dephosphorization problem when having solved sewage plant dephosphorization agent dosing system and breaking down.
The utility model discloses a position of scientific ingenious setting monitor and dosing point, under the prerequisite of just right and at utmost reduce cost, with its cooperation, effectively improve the biological dephosphorization efficiency of sewage plant.
The utility model provides a connecting line is not limited to one, as shown in fig. 3, the utility model discloses in, dephosphorization agent storage tank 10 divides for four ways through a filter, first way, second way, third way and fourth way promptly.
The phosphorus removal agent storage tank 10 is connected with a feeding point of the biochemical tank through a biochemical tank phosphorus removal agent feeding diaphragm pump 14 and a biochemical tank phosphorus removal agent feeding electromagnetic flow meter 7, specifically, two channels are arranged between the phosphorus removal agent storage tank 10 and the feeding point of the biochemical tank, the phosphorus removal agent storage tank 10 is filtered through a filter and then divided into two channels, namely a first channel and a second channel which run in parallel, the first channel is sequentially connected with a filter, a biochemical tank phosphorus removal agent feeding diaphragm pump 14 and a back pressure valve, then the first channel and the second channel are collected and then connected to the biochemical tank phosphorus removal agent feeding electromagnetic flow meter 7, and a safety valve, a pressure gauge and a damper are further arranged between the biochemical tank phosphorus removal agent feeding diaphragm pump 14 and the back pressure valve. The second path is the same as the first path, is sequentially connected with a filter, a biochemical tank phosphorus removing agent dosing diaphragm pump 14 and a back pressure valve, then is collected with the first path, and is connected to the biochemical tank phosphorus removing agent dosing electromagnetic flow meter 7, namely the two paths are collected and connected to the biochemical tank phosphorus removing agent dosing electromagnetic flow meter 7 after coming out of the back pressure valve.
And the phosphorus removal agent storage tank 10 is connected with the adding point of the reaction tank through a deep phosphorus removal agent dosing diaphragm pump 15 and a deep phosphorus removal agent dosing electromagnetic flow meter 8. Specifically, two paths are arranged between a phosphorus removing agent storage tank 10 and a feeding point of a reaction tank, the phosphorus removing agent storage tank 10 is filtered by a filter and then divided into two paths, namely a third path and a fourth path which run in parallel, the third path is sequentially connected with the filter, a deep phosphorus removing agent feeding diaphragm pump 15 and a back pressure valve, then the third path and the fourth path are collected, one path is connected with a deep phosphorus removing agent feeding electromagnetic flowmeter 8, and a safety valve, a pressure gauge and a damper are further arranged between the deep phosphorus removing agent feeding diaphragm pump 15 and the back pressure valve. The fourth path is the same as the third path, the fourth path is sequentially connected with a filter, a deep phosphorus removal agent dosing diaphragm pump 15 and a back pressure valve, then the fourth path and the third path are collected, one is connected with a deep phosphorus removal agent dosing electromagnetic flow meter 8, namely the two paths are collected and connected with the 8 deep phosphorus removal agent dosing electromagnetic flow meter 8 after coming out of the back pressure valve.
The adoption of a two-way or multi-way parallel arrangement mode can increase the processing efficiency and prevent one way from being out of order to stop operation.
The above-described embodiments are merely preferred examples of the present invention and are not exhaustive of the possible implementations of the present invention. Any obvious modifications to the above would be obvious to those of ordinary skill in the art, but would not bring the invention so modified beyond the spirit and scope of the present invention.
Claims (10)
1. An accurate phosphorus removal and medicine feeding system of a sewage treatment plant comprises a water inlet pump room, an anaerobic tank, an anoxic tank, an aerobic tank, a secondary sedimentation tank, a middle lift pump room, a reaction tank, a sedimentation tank, a filter tank and a water outlet channel which are connected in sequence; the device is characterized in that the aerobic tank is connected with a phosphorus removing agent adding device through a biochemical tank phosphorus removing agent adding diaphragm pump; the reaction tank is connected with the phosphorus removing agent adding device through a deep phosphorus removing agent adding diaphragm pump; the anaerobic tank is connected with a carbon source adding device through a carbon source adding diaphragm pump; the water inlet pump room is connected with the anaerobic tank through a water inlet lifting pump; the bottom of the secondary sedimentation tank is connected with the anaerobic tank through an external reflux pump; the middle lift pump room is connected with the reaction tank through a middle lift pump;
the water inlet pump room is provided with a water inlet quality and quantity monitoring instrument, the middle lifting pump room is provided with a secondary sedimentation tank water outlet quality monitoring instrument and a deep water inlet quantity monitoring instrument, and the water outlet channel is provided with a water outlet quality monitoring instrument.
2. The system for accurately removing phosphorus and adding drugs in the sewage treatment plant according to claim 1, further comprising a controller, wherein the controller is respectively connected with the inlet water quality and quantity monitoring instrument, the secondary sedimentation tank outlet water quality monitoring instrument and depth inlet water quantity monitoring instrument, and the outlet water quality monitoring instrument and reads data of the monitoring instruments; the controller is respectively and electrically connected with the water inlet lifting pump, the middle lifting pump, the carbon source dosing diaphragm pump, the deep phosphorus removal agent dosing diaphragm pump and the biochemical pool phosphorus removal agent dosing diaphragm pump.
3. The system of claim 1, wherein the intake water quality and quantity monitoring instrument of the intake pump room comprises an intake water quality monitoring instrument and an intake water quantity monitoring instrument respectively connected to the intake pump room.
4. The system for accurately removing phosphorus and adding drugs in the sewage treatment plant according to claim 3, wherein the inlet water quality monitoring instrument is an inlet water total phosphorus on-line monitor, and the inlet water amount monitoring instrument is an inlet water electromagnetic flow meter.
5. The accurate phosphorus removal and dosing system of the sewage treatment plant according to claim 1, wherein the secondary sedimentation tank effluent quality monitoring instrument is a secondary sedimentation tank effluent orthophosphate on-line monitor, and the deep influent quantity monitoring instrument is a deep influent electromagnetic flowmeter.
6. The system for accurately removing phosphorus and adding drugs in the sewage treatment plant according to claim 1, wherein the effluent quality monitoring instrument of the effluent channel is an effluent total phosphorus on-line monitor.
7. The accurate phosphorus removal and dosing system of a sewage treatment plant according to claim 2, wherein the phosphorus removal agent dosing device comprises a phosphorus removal agent storage tank, a phosphorus removal agent storage tank liquid level meter, a biochemical tank phosphorus removal agent dosing electromagnetic flow meter and a deep phosphorus removal agent dosing electromagnetic flow meter; the dephosphorization agent storage tank liquid level meter is positioned on the dephosphorization agent storage tank and is connected with the controller.
8. The accurate phosphorus removal and dosing system of a sewage treatment plant according to claim 7, wherein the inlet ends of the biochemical tank phosphorus removal agent dosing diaphragm pump and the deep phosphorus removal agent dosing diaphragm pump are respectively connected with a phosphorus removal agent storage tank, the outlet end of the biochemical tank phosphorus removal agent dosing diaphragm pump is connected with a biochemical tank phosphorus removal agent dosing electromagnetic flowmeter, and the outlet end of the deep phosphorus removal agent dosing diaphragm pump is connected with the deep phosphorus removal agent dosing electromagnetic flowmeter; an outlet end pipeline of the biochemical pool phosphorus removing agent dosing electromagnetic flow meter is laid to the water outlet end of the aerobic pool, and an outlet end pipeline of the deep phosphorus removing agent dosing electromagnetic flow meter is laid to the water inlet end of the reaction pool; the biochemical tank phosphorus removal agent dosing electromagnetic flow meter and the deep phosphorus removal agent dosing electromagnetic flow meter are both connected with the controller.
9. The accurate phosphorus removal and dosing system for sewage treatment plants according to claim 2, wherein the carbon source adding device comprises a carbon source storage tank, a carbon source storage tank liquid level meter and an anaerobic tank carbon source adding electromagnetic flow meter; and a carbon source storage tank liquid level meter is arranged on the carbon source storage tank and is connected with the controller.
10. The accurate phosphorus removal and dosing system of a sewage treatment plant according to claim 9, wherein an inlet end of the carbon source dosing diaphragm pump is connected with a carbon source storage tank, an outlet end of the carbon source dosing diaphragm pump is connected with an anaerobic tank carbon source dosing electromagnetic flowmeter, and an outlet end pipeline of the anaerobic tank carbon source dosing electromagnetic flowmeter is laid to the anaerobic tank; the anaerobic tank carbon source dosing electromagnetic flow meter is connected with the controller.
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| CN202021725527.8U CN212687861U (en) | 2020-08-18 | 2020-08-18 | Accurate dephosphorization medicine system of sewage treatment plant |
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