CN112794426A - Flocculating agent dosing system for water treatment based on two-way multi-parameter online detection - Google Patents
Flocculating agent dosing system for water treatment based on two-way multi-parameter online detection Download PDFInfo
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- CN112794426A CN112794426A CN202110392142.7A CN202110392142A CN112794426A CN 112794426 A CN112794426 A CN 112794426A CN 202110392142 A CN202110392142 A CN 202110392142A CN 112794426 A CN112794426 A CN 112794426A
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- reaction device
- flocculation reaction
- flocculation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5281—Installations for water purification using chemical agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/20—Measuring; Control or regulation
- B01F35/21—Measuring
- B01F35/2132—Concentration, pH, pOH, p(ION) or oxygen-demand
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/71—Feed mechanisms
- B01F35/717—Feed mechanisms characterised by the means for feeding the components to the mixer
- B01F35/7179—Feed mechanisms characterised by the means for feeding the components to the mixer using sprayers, nozzles or jets
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/305—Treatment of water, waste water or sewage
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/005—Processes using a programmable logic controller [PLC]
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/09—Viscosity
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/11—Turbidity
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a flocculant adding system for water treatment based on bidirectional multi-parameter online detection, which belongs to the technical field of sewage treatment, and comprises a sewage tank, a flocculation reaction device, a reagent box, a water inlet pump, a dosing pump, a concentration meter, a first flow meter, a second flow meter, a PLC (programmable logic controller) and an overflowing clear water online detector; the sewage tank, the water inlet pump and the flocculation reaction device are sequentially connected through pipelines, and the concentration meter and the second flow meter are both arranged on the pipeline for connecting the water inlet pump and the flocculation reaction device; the chemical box, the dosing pump and the flocculation reaction device are sequentially connected through a pipeline, and the first flowmeter is arranged on the pipeline for connecting the dosing pump and the flocculation reaction device; the overflow clear water on-line detector is used for detecting the turbidity or viscosity of clear water overflowing after flocculation reaction, and the PLC is respectively and electrically connected with the dosing pump, the concentration meter and the overflow clear water on-line detector. Can avoid the waste of the medicament and reduce the medicament residue problem of overflowing clear water.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to a flocculating agent adding system for water treatment based on bidirectional multi-parameter online detection.
Background
Sewage treatment: the sewage is purified to reach the water quality requirement of being discharged into a certain water body or being reused. Sewage treatment is widely applied to various fields such as buildings, agriculture, traffic, energy, petrifaction, environmental protection, urban landscape, medical treatment, catering and the like, and is increasingly used in daily life of common people. The sewage treatment can be divided into a physical method, a biological method and a chemical method according to the functions of the sewage treatment. Among them, the chemical method is a method of treating or recovering dissolved substances or colloidal substances of sewage by utilizing a chemical reaction, and is mostly used for industrial wastewater, and common chemical methods include coagulation, neutralization, redox, ion exchange, and the like. The chemical treatment method has good treatment effect and high cost, is mainly used for effluent after biochemical treatment and further treatment, and improves the effluent quality.
The sewage treatment agent has various varieties, and the most common is flocculant. Although the flocculating agent can effectively remove impurity particles in water, in the existing sewage treatment system, the adding amount of the flocculating agent cannot be well matched with the solid content of sewage, the adding is not accurate enough, and the problems of poor flocculation effect, medicament waste, excessive medicament residue in clear water and the like are easily caused.
In view of the above, the invention provides a novel intelligent flocculant adding system for sewage and wastewater treatment.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a flocculant adding system for water treatment based on bidirectional multi-parameter online detection, which can avoid the problems of medicament waste and medicament residue of overflowing clear water on the premise of effective flocculation.
In order to achieve the purpose, the invention provides the following technical scheme:
a flocculant adding system for water treatment based on bidirectional multi-parameter online detection comprises a sewage tank, a flocculation reaction device, a reagent box, a water inlet pump, a dosing pump, a concentration meter, a first flow meter, a second flow meter, a PLC (programmable logic controller) and an overflow clear water online detector;
the sewage pool, the water inlet pump and the flocculation reaction device are sequentially connected through pipelines, the concentration meter and the second flow meter are both arranged on a pipeline for connecting the water inlet pump and the flocculation reaction device, and the water inlet pump is used for conveying sewage in the sewage pool to the flocculation reaction device;
the chemical box, the dosing pump and the flocculation reaction device are sequentially connected through a pipeline, the first flowmeter is installed on the pipeline for connecting the dosing pump and the flocculation reaction device, and the dosing pump is used for conveying chemicals in the chemical box to the flocculation reaction device;
the overflow clear water online detector is used for detecting the turbidity or viscosity of the clear water overflowing after flocculation reaction, and the PLC is respectively and electrically connected with the dosing pump, the concentration meter and the overflow clear water online detector;
the flocculation reaction device is provided with a stirring mechanism for stirring materials and a dosing mechanism for adding a medicament into the flocculation reaction device, and the dosing mechanism horizontally reciprocates on the flocculation reaction device in the stirring process of the stirring mechanism.
More preferably: the flocculation reaction device sequentially comprises a material mixing area, a flocculation area and a precipitation area along the water flow direction;
be provided with sewage import and top cap in the compounding district, rabbling mechanism with add medicine mechanism and all install on the top cap, rabbling mechanism is used for the stirring material in the compounding district, add medicine mechanism and be used for adding the medicament compounding district, the rabbling mechanism stirring in-process, it is in to add medicine mechanism top surface horizontal reciprocating motion is distinguished in the compounding.
More preferably: the top cover is fixed at the top of the mixing area, and the stirring mechanism comprises a stirring shaft, a stirring paddle and a motor;
the motor is installed the top cap top surface, the (mixing) shaft is vertical setting and upper end and motor output shaft is fixed, and the lower extreme is inserted and is established in the compounding district, the stirring rake is fixed on the (mixing) shaft and be used for the stirring material in the compounding district.
More preferably: the dosing mechanism comprises a frame plate, an annular pipe, a medicament outlet hole, a medicament feeding hose, first meshing teeth, a rotary disc and second meshing teeth;
the frame plate is connected to the bottom of the top cover in a sliding mode, the first meshing teeth are arranged on two opposite sides of the inner surface of the frame plate, the stirring shaft and the rotating disc are both located in the frame plate, the stirring shaft penetrates through the center of the rotating disc, the rotating disc is fixed on the stirring shaft, and the second meshing teeth are fixed on the circumferential surface of the rotating disc and used for being alternately meshed with the first meshing teeth on two opposite sides of the frame plate;
the ring pipe is fixed on the frame plate, the medicament outlet hole is formed in the ring pipe, the medicament feeding hose is connected with the ring pipe, and the medicament feeding hose is connected with the dosing pump pipeline.
More preferably: the top surface of the frame plate is fixed with a sliding strip, the bottom surface of the top cover is provided with a sliding groove matched with the sliding strip, and the sliding strip is inserted in the sliding groove and is in sliding fit with the sliding groove.
More preferably: the frame plate is a rectangular frame body, the length direction of the frame plate is consistent with the length direction of the sliding groove, the ring pipe is rectangular and fixed on the bottom surface of the frame plate, a plurality of agent outlet holes are formed in the ring pipe, and the agent outlet holes are uniformly distributed on the bottom surface of the ring pipe along the winding direction of the ring pipe.
More preferably: the flocculation area is internally provided with a folded plate for dividing the flocculation area into a plurality of water flow channels so that sewage flows from the mixing area to the sedimentation area through the water flow channels.
More preferably: the folded plate is provided with two, two the folded plate symmetry sets up flocculation district middle part both sides.
More preferably: the sedimentation area is provided with an overflow trough at one side far away from the flocculation area, and the overflow trough is positioned on the top surface of the sedimentation area.
More preferably: the bottom of the settling zone is provided with a settling hopper, and the center of the bottom of the settling hopper is provided with an impurity outlet.
In conclusion, the invention has the following beneficial effects: the invention selects the concentration meter to realize the high-precision detection of the online concentration (solid content rate) of materials such as sewage, wastewater, sludge and the like, has stronger measurement data foundation and avoids the hysteresis caused by discontinuous detection. According to the invention, the intelligent adding adjustment of the medicament is realized through the solid content condition of the water body detected by the concentration meter, and the adding amount of the medicament can be accurately controlled, so that not only can the waste of the medicament be avoided, but also a good flocculation effect can be obtained. According to the intelligent flocculant adding system provided by the invention, the detection point is positioned at the sewage source, the detection point is different from the material detection after sampling and adding, the reference is provided for the subsequent reagent adding, and the problems of reagent waste and reagent residue of overflowing clear water can be avoided on the premise of effective flocculation.
The invention also designs a novel flocculation reaction device, when the medicament is fed, the motor is started, so that the stirring shaft drives the stirring paddle and the rotary table to synchronously rotate, and when the stirring paddle rotates, the materials in the material mixing area can be fully stirred, so that the mixing of the sewage and the medicament is accelerated. Because the second interlock tooth meshes with the first interlock tooth of the relative both sides of frame plate in turn, therefore the carousel rotates, and the second interlock tooth will drive frame plate, ring pipe along spout length direction reciprocating motion, therefore the medicament will spray through the medicament and go out the different positions at compounding district top, spray comprehensively and evenly, can effectively reduce the production at sewage and medicament contact dead angle. In addition, the reciprocal in-process that sprays of medicament, the medicament sprays all the time around the (mixing) shaft, therefore the medicament sprays the back down, along with the rotation of stirring rake, and the medicament will scatter rapidly for the mixture of medicament and sewage has improved the flocculation effect. The invention adopts a bidirectional multi-parameter online detection mode, and the concentration and the flow of the sewage (waste water) before flocculation and the turbidity or the viscosity of the overflow clear water are collected by a PLC controller, thereby adjusting the flow of the flocculating agent. The invention aims to realize more intelligent and accurate regulation of the adding amount of the medicament under the working condition of large sewage (waste water) flow and concentration variation, effectively avoid medicament waste and reduce medicament residue of overflow clear water.
Drawings
FIG. 1 is a block flow diagram of an embodiment, which is mainly used for embodying a flocculant addition system;
FIG. 2 is a schematic sectional view of an example, which is mainly used for embodying the internal structure of a flocculation reaction device;
FIG. 3 is a schematic structural diagram of the embodiment, which is mainly used for embodying the structure of the medicine adding mechanism;
FIG. 4 is a schematic structural diagram of an embodiment, which is mainly used for embodying the structure of the stirring mechanism;
FIG. 5 is a schematic plan view of an embodiment, which is mainly used for embodying the structure of a flocculation reaction apparatus.
In the figure, 1, a sewage tank; 2. a flocculation reaction device; 21. a mixing area; 22. a flocculation zone; 23. a settling zone; 3. a kit; 4. a water inlet pump; 5. a dosing pump; 6. a concentration meter; 7. a first flow meter; 8. a sewage inlet; 9. a settling hopper; 10. an impurity outlet; 11. an overflow trough; 12. a top cover; 131. a frame plate; 132. a ring pipe; 133. a medicament exit orifice; 134. a medicament feed hose; 135. a chute; 136. a first engaging tooth; 137. a turntable; 138. a second engaging tooth; 141. a stirring shaft; 142. a stirring paddle; 143. a motor; 15. folding the plate; 16. a second flow meter.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
Example (b): a flocculant adding system for water treatment based on bidirectional multi-parameter online detection is shown in figures 1-5 and comprises a sewage tank 1, a flocculation reaction device 2, a chemical box 3, a water inlet pump 4, a chemical adding pump 5, a concentration meter 6, a first flow meter 7, a second flow meter 16, a PLC (programmable logic controller), an overflow clear water online detector and a display screen. The sewage tank 1, the water inlet pump 4 and the flocculation reaction device 2 are sequentially connected through pipelines, and the concentration meter 6 and the second flow meter 16 are both arranged on the pipeline for connecting the water inlet pump 4 and the flocculation reaction device 2, preferably. The concentration meter can be an ultrasonic concentration meter, a radioactive source type concentration meter, a tuning fork concentration meter and other instruments capable of realizing high-precision concentration online detection, and output signals of the concentration meter comprise 4-20mA, 0-1000Hz, RS485 Modbus RTU and other controllable signals. The water inlet pump 4 is used for conveying the sewage in the sewage tank 1 to the flocculation reaction device 2, and the concentration meter 6 is used for detecting the solid content of the sewage entering the flocculation reaction device 2.
Referring to fig. 1 to 5, a chemical tank 3, a dosing pump 5 and a flocculation reaction device 2 are sequentially connected by a pipeline, and a first flow meter 7 is installed on the pipeline for connecting the dosing pump 5 and the flocculation reaction device 2 and is used for detecting the flow of chemicals on line. The dosing pump 5 is used for delivering the medicament in the medicament box 3 to the flocculation reaction device 2, and the medicament is mixed with the sewage in the flocculation reaction device 2, so that flocculation reaction occurs, and suspended particles in the sewage are settled after flocculation. The overflow clear water on-line detector is used for detecting the turbidity or viscosity of the clear water overflowing after the flocculation reaction, namely the overflow clear water on-line detector is a turbidimeter or a viscometer. The turbidity of the clear water overflowing after the flocculation reaction is detected to control the solid content in the clear water and judge whether the medicament is proper, and the viscosity of the clear water overflowing after the flocculation reaction is detected to control the medicament residue in the clear water and judge whether the medicament is proper. The PLC is respectively and electrically connected with the dosing pump 5, the concentration meter 6 and the overflow clear water online detector, the PLC is a Siemens S7-300 single chip microcomputer, and the single chip microcomputer is provided with a 6ES7288-13AM06-0AA0 Siemens SMART analog quantity input and output module. The input end of the PLC is electrically connected with the concentration meter 6 and the output end of the overflow clear water on-line detector, and the output end of the PLC is electrically connected with the dosing pump 5. The display screen is a numerical control display touch screen, is electrically connected with the PLC and is used for man-machine conversation so as to realize the adjustment of the data logic operation formula.
In the technical scheme, the concentration meter is selected to realize high-precision detection of the online concentration (solid content rate) of materials such as sewage, wastewater, sludge and the like, the measured data has stronger foundation, and the hysteresis caused by discontinuous detection is avoided. According to the invention, the intelligent adding adjustment of the medicament is realized through the solid content condition of the water body detected by the concentration meter 6, and the adding amount of the medicament can be accurately controlled, so that the waste of the medicament can be avoided, and a good flocculation effect can be obtained. According to the intelligent flocculant adding system provided by the invention, the detection point is positioned at the sewage source, is different from the material detection after sampling and adding, and has more reference basis for adding subsequent medicaments. The invention adopts a bidirectional multi-parameter online detection mode, and the concentration and the flow of the sewage (waste water) before flocculation and the turbidity or the viscosity of the overflow clear water are collected by a PLC controller, thereby adjusting the flow of the flocculating agent. The invention mainly aims to solve the problems that the adding amount of a medicament can be more intelligently and accurately regulated and added under the working conditions of large sewage (waste water) flow and concentration variation, the medicament waste is avoided on the premise of ensuring effective flocculation, and the medicament residue of overflowing clear water is reduced.
Referring to fig. 1-5, flocculation reaction device 2 includes compounding district 21, flocculation district 22 and settling zone 23 along the rivers direction in proper order, and flocculation reaction device 2 is the rectangle form, and compounding district 21, flocculation district 22 and settling zone 23 set gradually along flocculation reaction device 2 length direction respectively. The mixing area 21 is provided with a sewage inlet 8 and a top cover 12, and the sewage inlet 8 is positioned at the other side of the mixing area 21 opposite to the flocculation area 22. The top cap 12 is fixed at compounding district 21 top, installs the rabbling mechanism that is used for stirring the interior material of compounding district 21 on the top cap 12 and is used for adding the medicine mechanism in compounding district 21 with the medicament. In the stirring process of the stirring mechanism, the dosing mechanism horizontally reciprocates on the top surface of the material mixing area 21 so as to feed the medicine at different positions.
In above-mentioned technical scheme, traditional flocculation reaction device is all through the pipeline directly add sewage and medicament to flocculation reaction device 2 in, this kind of medicine mode though simple structure, but medicament and sewage all get into from flocculation reaction device 2 one side, have the dead angle, therefore sewage probably not have with the medicament contact or complete flocculation good just flow out flocculation reaction device 2, the effect of flocculation is relatively poor and flocculation time is longer. In order to overcome the defects, the flocculation reaction device 2 is sequentially divided into a material mixing area 21, a flocculation area 22 and a precipitation area 23 along the water flow direction, a medicament and sewage are mixed in the material mixing area 21, then flocculated in the flocculation area 22, and finally subjected to solid-liquid separation after being precipitated in the precipitation area 23. The sewage water inlet mode is the same as the water inlet mode of the traditional flocculation reaction device, and the sewage water is directly conveyed by a pipeline so as to enter from one side of the mixing area 21, but the medicament entering mode adopts a horizontal reciprocating spraying mode, so that the medicament is sprayed downwards into the mixing area 21 in the stirring process of the stirring mechanism.
Referring to fig. 1 to 5, preferably, the stirring mechanism includes a stirring shaft 141, a stirring paddle 142, and a motor 143. The motor 143 is installed on top cover 12 top surface, and the (mixing) shaft 141 is vertical setting and upper end and motor 143 output shaft are fixed, and the lower extreme is inserted and is established in compounding district 21. The stirring paddle 142 is fixed on the stirring shaft 141 and used for stirring the materials in the material mixing area 21, and the stirring paddle 142 is an inclined blade type blade and is provided with a plurality of blades up and down.
In above-mentioned technical scheme, rabbling mechanism's setting, aim at accelerates sewage and medicament and mixes to make sewage and medicament fully contact after, take place flocculation reaction, thereby reach good flocculation effect.
Referring to fig. 1-5, the dosing mechanism includes a frame plate 131, a collar 132, a medicament outlet 133, a medicament feed hose 134, first engagement teeth 136, a dial 137, and second engagement teeth 138. The frame plate 131 is connected to the bottom of the top cover 12 in a sliding manner, preferably, a sliding strip is fixed on the top surface of the frame plate 131, a sliding groove 135 matched with the sliding strip is formed in the bottom surface of the top cover 12, and the sliding strip is inserted into the sliding groove 135 and is in sliding fit with the sliding groove 135. The frame plate 131 is a rectangular frame body, the length direction of the frame plate is consistent with the length direction of the sliding groove 135, the sliding grooves 135 and the sliding strips are arranged in two, the two sliding grooves 135 correspond to the two sliding strips in a one-to-one mode, and the two sliding strips are arranged on two opposite sides of the frame plate 131 respectively. The ring pipe 132 is fixed on the frame plate 131, the medicine outlet 133 is formed on the ring pipe 132, the medicine feeding hose 134 is connected with the ring pipe 132, and the medicine feeding hose 134 is connected with the medicine feeding pump 5. Preferably, the ring pipe 132 is rectangular and has a circular angle, the ring pipe 132 is fixed to the bottom surface of the frame plate 131, the ring pipe 132 is provided with a plurality of medicine outlets 133, and the medicine outlets 133 are uniformly distributed on the bottom surface of the ring pipe 132 along the winding direction of the ring pipe 132.
Referring to fig. 1 to 5, the first engaging teeth 136 are provided on opposite sides of the inner surface of the frame plate 131 in the length direction of the frame plate 131. The stirring shaft 141 and the rotating disc 137 are both positioned in the frame plate 131, the stirring shaft 141 passes through the center of the rotating disc 137 from top to bottom, and the distance between the stirring shaft 141 and the two first meshing teeth 136 on the frame plate 131 is the same. The rotating disc 137 is fixed on the stirring shaft 141 and rotates coaxially with the stirring shaft 141, and the second engaging teeth 138 are fixed on one side of the circumferential surface of the rotating disc 137 and are used for being engaged with the first engaging teeth 136 on the opposite sides of the frame plate 131 alternately.
In above-mentioned technical scheme, during the medicament feeding, motor 143 starts to make (mixing) shaft 141 drive stirring rake 142, carousel 137 synchronous rotation, can carry out intensive mixing to the material in the compounding district 21 when stirring rake 142 rotates, in order to accelerate the mixture of sewage and medicament. Because the second engaging teeth 138 are engaged with the first engaging teeth 136 on the two opposite sides of the frame plate 131 alternately, when the rotating disc 137 rotates, the second engaging teeth 138 will drive the frame plate 131 and the ring pipe 132 to move back and forth along the length direction of the sliding chute 135, so that the chemicals will be sprayed at different positions on the top of the mixing area 21 through the chemical outlet 133, the spraying is complete and uniform, and the generation of contact dead angles between sewage and the chemicals can be effectively reduced. In addition, the reciprocal in-process that sprays of medicament, the medicament sprays all the time and is around (mixing) shaft 141, therefore the medicament sprays the back down, along with the rotation of stirring rake 142, and the medicament will scatter rapidly for the mixture of medicament and sewage has improved the flocculation effect.
Referring to fig. 1-5, a folded plate 15 is provided in the flocculation area 22 to divide the flocculation area 22 into a plurality of water flow passages, so that the sewage flows from the mixing area 21 to the settling area 23 through the water flow passages. Preferably, the two folding plates 15 are arranged to form three water flow channels in the flocculation area 22, and the two folding plates 15 are symmetrically arranged at two sides of the middle of the flocculation area 22. The overflow launder 11 is seted up to the one side of settling zone 23 keeping away from flocculation area 22, and overflow launder 11 is located settling zone 23 top surface, and specifically, overflow launder 11 is provided with a plurality ofly, and a plurality of overflow launder 11 equipartitions are in settling zone 23 top surface one side. The bottom of the settling zone 23 is provided with a settling hopper 9 convenient for settling impurity particles, and the center of the bottom of the settling hopper 9 is provided with an impurity outlet 10.
In the technical scheme, the invention adopts the folded plate 15 combination and the folded plates are arranged in a way that the angular points are corresponding or the width is opposite to each other, so that the flocculation area 22 consisting of water channels with the same water flow tortuosity or different water flow tortuosity is formed, and the flocculation effect is better. The traditional flocculation reaction device is not provided with a settling zone 23, and flocculated materials need to be sent into a settling tank for settling, so that the sewage treatment cost is increased.
Flocculation process and principle: sewage enters the mixing area 21 through the sewage inlet 8, the reagent is sprayed downwards at the top of the mixing area 21, the sewage and the reagent are quickly mixed under the action of the stirring paddle 142, then the sewage is divided into three flow channels which enter the flocculation area 22, and finally the sewage enters the sedimentation area 23 for sedimentation until solid-liquid separation is realized.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that several improvements and modifications without departing from the principle of the present invention will occur to those skilled in the art, and such improvements and modifications should also be construed as within the scope of the present invention.
Claims (10)
1. The utility model provides a flocculating agent dosing system for water treatment based on two-way multi-parameter on-line measuring which characterized in that: the device comprises a sewage pool (1), a flocculation reaction device (2), a chemical box (3), a water inlet pump (4), a chemical feeding pump (5), a concentration meter (6), a first flow meter (7), a second flow meter (16), a PLC (programmable logic controller) and an overflow clear water online detector;
the sewage tank (1), the water inlet pump (4) and the flocculation reaction device (2) are sequentially connected through pipelines, the concentration meter (6) and the second flow meter (16) are both arranged on a pipeline for connecting the water inlet pump (4) and the flocculation reaction device (2), and the water inlet pump (4) is used for conveying sewage in the sewage tank (1) to the flocculation reaction device (2);
the chemical box (3), the dosing pump (5) and the flocculation reaction device (2) are sequentially connected through a pipeline, the first flow meter (7) is installed on the pipeline for connecting the dosing pump (5) and the flocculation reaction device (2), and the dosing pump (5) is used for conveying chemicals in the chemical box (3) to the flocculation reaction device (2);
the overflow clear water online detector is used for detecting the turbidity or viscosity of the clear water overflowing after flocculation reaction, and the PLC is respectively and electrically connected with the dosing pump (5), the concentration meter (6) and the overflow clear water online detector;
the flocculation reaction device (2) is provided with a stirring mechanism for stirring materials and a dosing mechanism for adding a medicament into the flocculation reaction device (2), wherein the stirring mechanism is used for stirring in the stirring process and the dosing mechanism horizontally reciprocates on the flocculation reaction device (2).
2. The flocculant adding system for water treatment based on bidirectional multi-parameter online detection as claimed in claim 1, wherein: the flocculation reaction device (2) sequentially comprises a material mixing area (21), a flocculation area (22) and a sedimentation area (23) along the water flow direction;
be provided with sewage import (8) and top cap (12) on compounding district (21), rabbling mechanism with add medicine mechanism and all install on top cap (12), the rabbling mechanism is used for the stirring material in compounding district (21), it is used for adding the medicament to add medicine mechanism compounding district (21), the rabbling mechanism stirring in-process, it is in to add medicine mechanism compounding district (21) top surface horizontal reciprocating motion.
3. The flocculant adding system for water treatment based on the bidirectional multi-parameter online detection as claimed in claim 2, wherein: the top cover (12) is fixed on the top of the mixing area (21), and the stirring mechanism comprises a stirring shaft (141), a stirring paddle (142) and a motor (143);
the stirring device is characterized in that the motor (143) is installed on the top surface of the top cover (12), the stirring shaft (141) is vertically arranged, the upper end of the stirring shaft is fixed to an output shaft of the motor (143), the lower end of the stirring shaft is inserted into the material mixing area (21), and the stirring paddle (142) is fixed to the stirring shaft (141) and used for stirring materials in the material mixing area (21).
4. The flocculant adding system for water treatment based on the bidirectional multi-parameter online detection as claimed in claim 3, wherein: the medicine adding mechanism comprises a frame plate (131), a ring pipe (132), a medicine outlet hole (133), a medicine feeding hose (134), first meshing teeth (136), a rotary disc (137) and second meshing teeth (138);
the frame plate (131) is connected to the bottom of the top cover (12) in a sliding mode, the first meshing teeth (136) are arranged on two opposite sides of the inner surface of the frame plate (131), the stirring shaft (141) and the rotating disc (137) are both located in the frame plate (131), the stirring shaft (141) penetrates through the center of the rotating disc (137), the rotating disc (137) is fixed on the stirring shaft (141), and the second meshing teeth (138) are fixed on the circumferential surface of the rotating disc (137) and used for being meshed with the first meshing teeth (136) on two opposite sides of the frame plate (131) in an alternating mode;
the ring pipe (132) is fixed on the frame plate (131), the medicine outlet hole (133) is formed in the ring pipe (132), the medicine feeding hose (134) is connected with the ring pipe (132), and the medicine feeding hose (134) is connected with the medicine feeding pump (5) through a pipeline.
5. The flocculant adding system for water treatment based on bidirectional multi-parameter online detection as claimed in claim 4, wherein: the top surface of the frame plate (131) is fixed with a sliding strip, the bottom surface of the top cover (12) is provided with a sliding groove (135) matched with the sliding strip, and the sliding strip is inserted in the sliding groove (135) and is in sliding fit with the sliding groove (135).
6. The flocculant adding system for water treatment based on bidirectional multi-parameter online detection as claimed in claim 5, wherein: the frame plate (131) is a rectangular frame body, the length direction of the frame plate is consistent with the length direction of the sliding groove (135), the ring pipe (132) is rectangular and is fixed on the bottom surface of the frame plate (131), the ring pipe (132) is provided with a plurality of medicine outlet holes (133), and the medicine outlet holes (133) are uniformly distributed on the bottom surface of the ring pipe (132) along the winding direction of the ring pipe (132).
7. The flocculant adding system for water treatment based on the bidirectional multi-parameter online detection as claimed in claim 2, wherein: the flocculation area (22) is internally provided with a folded plate (15) used for dividing the flocculation area (22) into a plurality of water flow channels, so that sewage flows from the mixing area (21) to the sedimentation area (23) through the water flow channels.
8. The flocculant adding system for water treatment based on bidirectional multi-parameter online detection as claimed in claim 7, wherein: the two folded plates (15) are symmetrically arranged on two sides of the middle part of the flocculation area (22).
9. The flocculant adding system for water treatment based on the bidirectional multi-parameter online detection as claimed in claim 2, wherein: the side of the sedimentation area (23) far away from the flocculation area (22) is provided with an overflow trough (11), and the overflow trough (11) is positioned on the top surface of the sedimentation area (23).
10. The flocculant adding system for water treatment based on the bidirectional multi-parameter online detection as claimed in claim 2, wherein: the bottom of the settling zone (23) is provided with a settling hopper (9), and the center of the bottom of the settling hopper (9) is provided with an impurity outlet (10).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110392142.7A CN112794426A (en) | 2021-04-13 | 2021-04-13 | Flocculating agent dosing system for water treatment based on two-way multi-parameter online detection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110392142.7A CN112794426A (en) | 2021-04-13 | 2021-04-13 | Flocculating agent dosing system for water treatment based on two-way multi-parameter online detection |
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| CN112794426A true CN112794426A (en) | 2021-05-14 |
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| CN113307340A (en) * | 2021-05-19 | 2021-08-27 | 中国水利水电第五工程局有限公司 | Tunnel sewage flocculation treatment system |
| CN117049733A (en) * | 2023-08-23 | 2023-11-14 | 上海创新给水设备制造(集团)有限公司 | Sewage treatment system for accelerating diffusion and mixing of medicament |
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| CN108946845A (en) * | 2018-09-17 | 2018-12-07 | 蚌埠市鑫源机电设备有限公司 | It is a kind of to be quickly stirred formula sewage disposal device |
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Application publication date: 20210514 |