CN117550700A - Self-adaptive adjusting control system for PAM concentrated dosing of multiple wastewater treatment stations - Google Patents
Self-adaptive adjusting control system for PAM concentrated dosing of multiple wastewater treatment stations Download PDFInfo
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- CN117550700A CN117550700A CN202311846623.6A CN202311846623A CN117550700A CN 117550700 A CN117550700 A CN 117550700A CN 202311846623 A CN202311846623 A CN 202311846623A CN 117550700 A CN117550700 A CN 117550700A
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- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 37
- 239000003814 drug Substances 0.000 claims abstract description 234
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 65
- 239000002351 wastewater Substances 0.000 claims description 48
- 239000007788 liquid Substances 0.000 claims description 40
- 239000000523 sample Substances 0.000 claims description 26
- 239000000463 material Substances 0.000 claims description 15
- 238000004062 sedimentation Methods 0.000 claims description 15
- 229940079593 drug Drugs 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 12
- 239000000843 powder Substances 0.000 claims description 11
- 230000001105 regulatory effect Effects 0.000 claims description 10
- 230000001502 supplementing effect Effects 0.000 claims description 6
- 238000005189 flocculation Methods 0.000 claims description 5
- 230000016615 flocculation Effects 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims 1
- 239000004065 semiconductor Substances 0.000 abstract description 4
- 229920002401 polyacrylamide Polymers 0.000 description 56
- 239000003153 chemical reaction reagent Substances 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 230000001112 coagulating effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000005345 coagulation Methods 0.000 description 2
- 230000015271 coagulation Effects 0.000 description 2
- 238000012377 drug delivery Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000007726 management method Methods 0.000 description 2
- 238000006386 neutralization reaction Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000010842 industrial wastewater Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- 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
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/346—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from semiconductor processing, e.g. waste water from polishing of wafers
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- 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)
- Chemical Kinetics & Catalysis (AREA)
- Accessories For Mixers (AREA)
Abstract
The invention relates to the technical field of semiconductor wastewater treatment, in particular to a PAM centralized dosing self-adaptive regulation control system for multiple wastewater treatment stations. The utility model provides a self-adaptation regulation control system of dosing is concentrated to many waste water treatment stations PAM, includes medicine dispensing system, PAM medicine groove, dosing system, waste water treatment system, and medicine storage tank, water supply system are connected respectively to medicine dispensing system entry, and medicine dispensing system exit linkage PAM medicine groove entry, PAM medicine groove exit linkage dosing system entry, and the dosing system export is through the slow pond entry that mixes of proportional control valve connection waste water treatment system. Compared with the prior art, the PAM dosing control device is suitable for accurate control of PAM dosing with different concentrations. The requirement for constructing a plurality of sets of PAM dosing systems is reduced, the space is saved, and the management cost is reduced. The automatic dispensing replaces manual dispensing, the dispensing precision control is improved, and the dispensing labor cost is saved.
Description
Technical Field
The invention relates to the technical field of semiconductor wastewater treatment, in particular to a PAM centralized dosing self-adaptive regulation control system for multiple wastewater treatment stations.
Background
The industrial wastewater of the semiconductor chip industry is of various types and is generally classified into CMP grinding wastewater, wastewater containing heavy metals and the like. Multiple sets of wastewater treatment facilities are designed for different types of wastewater to be collected and disposed of in a classified manner. At present, a coagulating sedimentation process flow is commonly adopted in the industry, and part of wastewater is subjected to advanced resin treatment according to actual conditions, wherein the coagulating sedimentation process flow comprises the following steps: PH regulating tank, fast mixing tank, slow mixing tank, sedimentation tank, neutralization tank, discharge tank, etc. PAM flocculant, namely polyacrylamide, is a water-soluble linear high molecular polymer and has good flocculation property, suspended particulate matters in sewage can be subjected to electric neutralization and bridging adsorption to form a large-volume floccule, and solid-liquid separation is realized.
The current automatic dosing device carries out quantitative dosing operation according to fixed PAM medicament concentration and dosing metering setting, realizes automatic dispensing mixing and quantitative dosing function, but can not timely adjust dosing control according to water quality change of a wastewater tank. When the wastewater types are multiple in the semiconductor industry, the mixed wastewater inlet water quality has larger fluctuation of suspended matter concentration change, excessive manual intervention exists in quantitative dosing, and dosing metering adjustment is needed to be frequently carried out according to the wastewater types and the inlet water quality change.
In addition, although automatic start and stop of dosing can be set when PAM medicament is added in the wastewater slow mixing tank, the flow of a dosing pump is controlled to be a constant value, and the inflow flow and the water quality change cannot be automatically matched. The actual adding concentration of PAM medicament in the slow mixing tank can have certain fluctuation, the accurate control of the PAM medicament addition during wastewater treatment can not be realized, the medicament waste is generated or the effect of wastewater coagulating sedimentation is influenced, and even the serious consequence that the discharge water can not reach the discharge standard occurs.
Because the concentration and the flow difference of PAM medicament addition of different types of wastewater coagulation systems are large, a plurality of sets of PAM medicament adding systems are usually arranged for different wastewater systems, and the medicament adding amounts are controlled respectively. Many sets of PAM dosing systems can use more medicament storage tanks and dosing control facilities, occupation space and increase management cost.
Disclosure of Invention
The invention provides a PAM concentrated dosing self-adaptive regulation control system for a multi-wastewater treatment station, which aims to overcome the defects of the prior art.
In order to achieve the above purpose, the self-adaptive adjustment control system for centralized dosing of the PAM of the multi-wastewater treatment station is designed, the self-adaptive adjustment control system comprises a dispensing system, a PAM medicine tank, a dosing system and a wastewater treatment system, wherein an inlet of the dispensing system is respectively connected with a medicine storage tank and a water supply system, an outlet of the dispensing system is connected with an inlet of the PAM medicine tank, an outlet of the PAM medicine tank is connected with an inlet of the dosing system, an outlet of the dosing system is connected with an inlet of a slow mixing tank of the wastewater treatment system through a proportion adjusting valve, the wastewater treatment system comprises a wastewater raw water tank, a PH adjusting tank, a fast mixing tank, a slow mixing tank and a sedimentation tank which are sequentially connected, a first probe is arranged in the wastewater raw water tank and used for detecting concentration of wastewater suspended solids so as to determine concentration of required PAM medicine, and a second probe is arranged at the inlet of the sedimentation tank and used for detecting flocculation condition of the slow mixing tank so as to adjust opening size of the proportion adjusting valve.
And a third probe is arranged at the outlet of the sedimentation tank and is used for detecting the treatment condition of suspended matters in the wastewater, and when the concentration of the suspended matters detected by the third probe does not reach the standard, the wastewater is returned to the wastewater raw water tank for secondary treatment.
The outlet of the medicine dispensing system is connected with the PAM medicine tank through the medicine delivery pump, liquid level meters are arranged in the medicine dispensing system and the PAM medicine tank, and when the medicine liquid level in the medicine dispensing system reaches a set liquid level, the medicine delivery pump is started to deliver medicine to the PAM medicine tank; when the liquid level in the PAM medicine tank reaches a set high liquid level, the communication state of the medicine dispensing system, the medicine storage tank and the water supply system is closed, and the medicine conveying pump continues to convey medicine to the PAM medicine tank until the liquid level of the medicine in the medicine dispensing system reaches a set low liquid level, the medicine conveying pump is closed, and meanwhile, the medicine dispensing tank stirring device is closed after 30 minutes.
When the drug delivery pump delivers the liquid in the drug dispensing system, the flow of the drug delivery pump is consistent with the water supplementing amount of the water supply system to the drug dispensing system.
The medicine dispensing system comprises a medicine dispensing box and a medicine dispensing stirring device, a medicine inlet connected with a medicine storage tank and a water inlet connected with a water supply system are arranged on the medicine dispensing box, the medicine dispensing stirring device is arranged in the medicine dispensing box, a plurality of medicine dispensing liquid level lines are arranged on the inner wall of the medicine dispensing box, and the medicine dispensing box is made of PE materials.
The medicine storage tank upper end be equipped with the powder and add the hole, the powder adds downthehole check valve of installation, medicine storage tank side is equipped with transparent window, medicine storage tank bottom is equipped with out the medicine mouth, goes out the medicine mouth and connects spiral medicine feeder entry, spiral medicine feeder exit linkage dispensing system's medicine distribution box, spiral medicine feeder passes through step motor drive, medicine storage tank inside is bilayer structure, medicine storage tank inlayer selects for use the PE material, the outer stainless steel material of selecting for use of medicine storage tank.
The water supply system comprises a water source, a conveying pipeline and a pneumatic valve, wherein the water source is conveyed to the dispensing system through the conveying pipeline, the conveying pipeline is provided with the pneumatic valve and a water supply flowmeter, the pneumatic valve is used for opening or closing the communication between the water supply system and the dispensing system, and the water supply flowmeter is used for monitoring water flow of water supply.
The PAM medicine groove in be equipped with medicine groove agitating unit, PAM medicine groove inner wall is equipped with a plurality of medicine groove liquid level lines, PAM medicine groove selects PE material or FRP material.
The dosing system comprises a plurality of dosing pumps, wherein the inlets of the dosing pumps are connected with the outlet of the PAM drug tank, and the dosing pumps are connected to the slow mixing tank of the wastewater treatment system through the proportional regulating valve.
The system also comprises a PLC control system, wherein the PLC control system controls the opening and closing or opening of the valve, the stepping motor and the pump.
Compared with the prior art, the invention is suitable for accurate control of PAM dosing with different concentrations. The requirement for constructing a plurality of sets of PAM dosing systems is reduced, the space is saved, and the management cost is reduced. The automatic dispensing replaces manual dispensing, the dispensing precision control is improved, and the dispensing labor cost is saved.
Drawings
FIG. 1 is a schematic process diagram of the present invention.
Fig. 2 is a schematic structural view of the present invention.
Description of the embodiments
The invention is further described below with reference to the accompanying drawings.
As shown in fig. 1 to 2, the device comprises a dispensing system 3, a PAM medicine tank 4, a medicine adding system 5 and a wastewater treatment system 6, wherein an inlet of the dispensing system 3 is respectively connected with a medicine storage tank 1 and a water supply system 2, an outlet of the dispensing system 3 is connected with an inlet of the PAM medicine tank 4, an outlet of the PAM medicine tank 4 is connected with an inlet of the medicine adding system 5, an outlet of the medicine adding system 5 is connected with a slow mixing tank inlet of the wastewater treatment system 6 through a proportion adjusting valve 7, the wastewater treatment system 6 comprises a raw wastewater tank 6-1, a PH adjusting tank 6-2, a fast mixing tank 6-3, a slow mixing tank 6-4 and a sedimentation tank 6-5 which are sequentially connected, a first probe 6-6 is arranged in the raw wastewater tank 6-1 and used for detecting concentration of suspended solids of wastewater so as to determine required concentration of PAM medicines, and a second probe 6-7 is arranged at an inlet of the sedimentation tank 6-5 and used for detecting flocculation conditions of the slow mixing tank 6-4 so as to adjust opening degree of the proportion adjusting valve 7.
The waste water raw water tank 6-1 is internally provided with a waste water level gauge 6-8, the outlet of the waste water raw water tank 6-1 is connected with the PH regulating tank 6-2 through a waste water conveying pump 6-10, and the waste water conveying pump 6-10 is provided with a waste water flowmeter 6-9.
In the wastewater treatment system 6, wastewater to be treated is pumped into a PH regulating tank 6-2 by a wastewater conveying pump 6-10, overflows to a rapid mixing tank 6-3 after PH value regulating treatment by adding acid liquor or alkali liquor, overflows to a slow mixing tank 6-4 after preliminary coagulation treatment by adding a certain amount of PAC (programmable logic controller) medicaments in the rapid mixing tank 6-3, and an outlet of a dosing system 5 is connected above the slow mixing tank 6-4.
In the embodiment, a first probe 6-6 is arranged in a wastewater raw water tank 6-1 to detect the numerical value of suspended substances in the wastewater raw water tank 6-1, and a second probe 6-7 is arranged at the inlet of a sedimentation tank 6-5 to detect the flocculation condition of a slow mixing tank 6-4. The dosing pump 5-1 and the wastewater conveying pump 6-10 are matched, and meanwhile, a proportional regulating valve 7 is arranged on an outlet pipeline of the dosing pump 5-1. When the PAM dosing agent is specifically used, the change of the suspended matter concentration value of the wastewater in the wastewater raw water tank 6-1 is taken as a precondition, and the range value of the suspended matter concentration value and the PAM dosing amount are preset in advance according to experimental data. And then the opening of the proportional regulating valve is regulated according to the feedback of the concentration value of suspended matters at the inlet of the sedimentation tank, so that the dosing quantity of the dosing pump 5-1 is accurately controlled. When the wastewater flows in, the wastewater and the PAM agent are premixed and then enter a slow mixing tank, and then the wastewater and the PAM agent are fully mixed and stirred by a slow mixing tank stirrer, so that suspended particles in the wastewater flocculate to form a large volume, and solid-liquid separation is realized.
And a third probe is arranged at the outlet of the sedimentation tank 6-5 and is used for detecting the treatment condition of suspended matters in the wastewater, and when the concentration of the suspended matters detected by the third probe does not reach the standard, the wastewater is returned to the wastewater raw water tank 6-1 for secondary treatment. The third probe detects the safe alarm backflow at the tail end so as to cope with the abnormal water quality of the system fault effluent.
The first probe 6-6, the second probe 6-7 and the third probe of the embodiment adopt HACH SC200, so that the monitoring response is extremely fast, the stability is good, and the water quality condition can be reflected in real time.
In this embodiment, three groups of probes are provided to detect the concentration value of suspended matters. The first probe 6-6 and the second probe 6-7 respectively control the rough adjustment and the fine adjustment of the dosing. The proportional valve is roughly adjusted according to the concentration value of the suspended matters detected by the first probe 6-6, and the PAM medicine quantity to be added is set according to the range value of the concentration value of the suspended matters and the working condition. The maximum opening flow rate of the proportional valve can meet the worst case requirement of adding the maximum PAM medicine amount. And the fine adjustment proportional valve is adjusted in a feedback mode according to the concentration value of the suspended matters detected by the second probe 6-7, the maximum opening flow of the fine adjustment proportional valve is lower than that of the coarse adjustment proportional valve, the selection is calculated according to the dosing requirement, and the default opening is set to be 50% open. In this embodiment, the suspension concentration value of the second probe 6-7 is set to a permissible range of 50-90mg/L, when the suspension concentration value is lower than 50mg/L, the opening of the fine-tuning proportional valve 7 is decreased, and when the suspension concentration value is higher than 90mg/L, the opening of the fine-tuning proportional valve 7 is increased.
The outlet of the medicine dispensing system 3 is connected with the PAM medicine tank 4 through a medicine delivery pump 8, liquid level meters 9 are arranged in the medicine dispensing system 3 and the PAM medicine tank 4, and when the medicine liquid level in the medicine dispensing system 3 reaches a set liquid level, the medicine delivery pump 8 is started to deliver medicine to the PAM medicine tank 4; when the liquid level in the PAM medicine tank 4 reaches the set high liquid level, the communication state of the medicine dispensing system 3, the medicine storage tank 1 and the water supply system 2 is closed, and the medicine conveying pump 8 continues to convey medicine to the PAM medicine tank 4 until the medicine liquid level in the medicine dispensing system 3 reaches the set low liquid level, the medicine conveying pump 8 is closed, and meanwhile, the medicine dispensing box stirring device 3-2 is closed after 30 minutes delay. When the medicament delivery pump 8 delivers the liquid in the medicament dispensing system 3, the flow rate of the medicament delivery pump 8 and the water supplementing amount of the water supply system 2 to the medicament dispensing system 3 are consistent.
The medicine dispensing system 3 comprises a medicine dispensing box 3-1 and a medicine dispensing and stirring device 3-2, a medicine inlet connected with the medicine storage tank 1 and a water inlet connected with the water supply system 2 are arranged on the medicine dispensing box 3-1, the medicine dispensing and stirring device 3-2 is arranged in the medicine dispensing box 3-1, a plurality of medicine dispensing liquid level lines 3-3 are arranged on the inner wall of the medicine dispensing box 3-1, and the medicine dispensing box 3-1 is made of PE materials. When the reagent in the PAM medicine tank 4 is at a low liquid level, the PLC control system 10 opens the pneumatic valve 2-3 of the water supply system 2 to supplement water for the medicine distribution box 3-1, and controls the medicine feeding stepping motor to accurately feed medicine according to the tap water supplementing flow, and the medicine dissolution stirring device 3-2 is used for dissolving and stirring the reagent, so that the PAM medicine powder is fully dissolved in water. When the liquid level of the medicine in the medicine dispensing box 3-1 reaches the set liquid level, a medicine delivery pump is started to deliver the medicine to the PAM medicine tank 4.
The upper end of the medicine storage tank 1 is provided with a medicine powder adding hole 1-1, and a one-way valve is arranged in the medicine powder adding hole 1-1. The medicine powder adding hole 1-1 is normally closed, so that moist air is prevented from entering the tank body from the medicine powder adding hole 1-1, and the PLC control system 10 controls the one-way valve to be opened and closed when adding medicines, so that the medicine powder adding hole 1-1 is opened and closed. The side of the medicine storage tank 1 is provided with a transparent window for observing the medicine powder storage in the tank so as to be timely supplemented. The bottom of the medicament storage tank 1 is provided with a medicament outlet 1-3, the medicament outlet 1-3 is connected with an inlet of the spiral medicament delivery device 1-4, an outlet of the spiral medicament delivery device 1-4 is connected with a medicament dispensing box 3-1 of the medicament dispensing system 3, and the spiral medicament delivery device 1-4 is driven by a stepping motor 1-5. The stepping motor 1-5 is controlled by the PLC control system 10 to be matched with the spiral medicine feeding device 1-4 so as to realize accurate control of medicine feeding amount. The inside bilayer structure that is of medicament holding vessel 1, medicament holding vessel 1 inlayer select for use PE material, and medicament holding vessel 1 skin selects for use stainless steel material, dampproofing sealed.
The water supply system 2 comprises a water source 2-1, a conveying pipeline 2-2 and a pneumatic valve 2-3, wherein the water source 2-1 is conveyed to the dispensing system 3 through the conveying pipeline 2-2, the conveying pipeline 2-2 is provided with the pneumatic valve 2-3 and a water supply flowmeter 2-4, the pneumatic valve 2-3 is used for opening or closing the communication between the water supply system 2 and the dispensing system 3, and the water supply flowmeter 2-4 is used for monitoring the water flow of water supply, so that the dosage can be controlled and adjusted conveniently. When the liquid level meter 9 in the PAM medicine tank 4 detects a low liquid level in specific use, the pneumatic valve 2-3 is triggered to be opened and closed.
The PAM medicine tank 4 is internally provided with a medicine tank stirring device 4-1, the inner wall of the PAM medicine tank 4 is provided with a plurality of medicine tank liquid level lines 4-2, and the PAM medicine tank 4 is made of PE material or FRP material. The PAM medicine tank 4 sets up safe medicine liquid level, when being less than safe medicine liquid level, and the medicine supplementing operation is carried out to PAM medicine tank 4 to the medicine dispensing system 3, and when PAM medicine tank 4 medicine high liquid level, the medicine supplementing operation is stopped to the medicine dispensing system 3.
The dosing system 5 comprises a plurality of dosing pumps 5-1, the inlet of each dosing pump 5-1 is connected with the outlet of the PAM drug tank 4, and the outlet of each dosing pump 5-1 is connected with the slow mixing tank 6-4 of the wastewater treatment system 6 through a proportional regulating valve 7.
The system also comprises a PLC control system 10, wherein the PLC control system 10 controls the opening and closing or opening of the valve, the stepping motors 1-5 and the pump.
The PAM dosing control precision is improved, the phenomenon that the waste water operation treatment effect and the reagent waste are influenced due to the fact that the PAM reagent is excessively low or excessively high in waste water treatment is avoided, the operation risk is reduced through centralized automatic control, and the labor cost is reduced.
Claims (10)
1. Self-adaptive adjusting and controlling system for centralized dosing of PAM (pulse-width modulation) of multiple wastewater treatment stations, which is characterized in that: including drug dispensing system (3), PAM medicine groove (4), drug adding system (5), waste water treatment system (6), drug dispensing system (3) entry is connected medicament holding vessel (1) respectively, water supply system (2), drug dispensing system (3) exit linkage PAM medicine groove (4) entry, PAM medicine groove (4) exit linkage drug adding system (5) entry, slow mixing pond (6-4) entry of waste water treatment system (6) is connected through proportional control valve (7) in drug adding system (5) export, waste water treatment system (6) are including waste water raw water pond (6-1) that connect gradually, PH equalizing basin (6-2), fast mixing pond (6-3), slow mixing pond (6-4), sedimentation tank (6-5), be located waste water raw water pond (6-1) and be equipped with first probe (6-6), first probe (6-6) are used for detecting waste water suspended solid concentration, in order to confirm required medicament concentration, sedimentation tank (6-5) entry is equipped with second probe (6-7), second probe (6-7) are used for detecting slow mixing pond (6-7), the aperture of flocculation valve is big in order to adjust in order to the aperture.
2. The self-adaptive adjustment control system for PAM centralized dosing of a multi-wastewater treatment station according to claim 1, wherein: and a third probe is arranged at the outlet of the sedimentation tank (6-5) and is used for detecting the treatment condition of suspended matters in the wastewater, and when the concentration of the suspended matters detected by the third probe does not reach the standard, the wastewater is returned to the wastewater raw water tank (6-1) for secondary treatment.
3. The self-adaptive adjustment control system for PAM centralized dosing of a multi-wastewater treatment station according to claim 1, wherein: the outlet of the medicine dispensing system (3) is connected with the PAM medicine tank (4) through the medicine delivery pump (8), liquid level meters (9) are arranged in the medicine dispensing system (3) and the PAM medicine tank (4), and when the medicine liquid level in the medicine dispensing system (3) reaches a set liquid level, the medicine delivery pump (8) is started to deliver medicine to the PAM medicine tank (4); when the liquid level in the PAM medicine tank (4) reaches a set high liquid level, the communication state of the medicine dispensing system (3), the medicine storage tank (1) and the water supply system (2) is closed, the medicine conveying pump (8) continues to convey medicine to the PAM medicine tank (4) until the liquid level of the medicine in the medicine dispensing system (3) reaches a set low liquid level, the medicine conveying pump (8) is closed, and meanwhile, the medicine dispensing tank stirring device (3-2) is closed after 30 minutes.
4. The self-adaptive adjustment control system for PAM centralized dosing of a multi-wastewater treatment station according to claim 1, wherein: when the medicament delivery pump (8) delivers the liquid in the dispensing system (3), the flow rate of the medicament delivery pump (8) and the water supplementing amount of the water supply system (2) to the dispensing system (3) are kept consistent.
5. The self-adaptive adjustment control system for PAM centralized dosing of a multi-wastewater treatment station according to claim 1, wherein: the medicine dispensing system (3) comprises a medicine dispensing box (3-1) and a medicine dispensing stirring device (3-2), a medicine inlet connected with a medicine storage tank (1) and a water inlet connected with a water supply system (2) are arranged on the medicine dispensing box (3-1), the medicine dispensing stirring device (3-2) is arranged in the medicine dispensing box (3-1), a plurality of medicine dispensing liquid level lines (3-3) are arranged on the inner wall of the medicine dispensing box (3-1), and the medicine dispensing box (3-1) is made of PE materials.
6. The self-adaptive adjustment control system for PAM centralized dosing of a multi-wastewater treatment station according to claim 1, wherein: the medicine storage tank is characterized in that a medicine powder adding hole (1-1) is formed in the upper end of the medicine storage tank (1), a one-way valve is arranged in the medicine powder adding hole (1-1), a transparent window is formed in the side face of the medicine storage tank (1), a medicine outlet (1-3) is formed in the bottom of the medicine storage tank (1), the medicine outlet (1-3) is connected with an inlet of a spiral medicine conveying device (1-4), an outlet of the spiral medicine conveying device (1-4) is connected with a medicine dispensing box (3-1) of the medicine dispensing system (3), the spiral medicine conveying device (1-4) is driven by a stepping motor (1-5), the inside of the medicine storage tank (1) is of a double-layer structure, PE materials are selected as inner layers of the medicine storage tank (1), and stainless steel materials are selected as outer layers of the medicine storage tank (1).
7. The self-adaptive adjustment control system for PAM centralized dosing of a multi-wastewater treatment station according to claim 1, wherein: the water supply system (2) comprises a water source (2-1), a conveying pipeline (2-2) and a pneumatic valve (2-3), wherein the water source (2-1) is conveyed to the dispensing system (3) through the conveying pipeline (2-2), the pneumatic valve (2-3) and a water supply flowmeter (2-4) are arranged on the conveying pipeline (2-2), the pneumatic valve (2-3) is used for opening or closing the communication between the water supply system (2) and the dispensing system (3), and the water supply flowmeter (2-4) is used for monitoring the water flow of water supply.
8. The self-adaptive adjustment control system for PAM centralized dosing of a multi-wastewater treatment station according to claim 1, wherein: the PAM medicine groove (4) in be equipped with medicine groove agitating unit (4-1), PAM medicine groove (4) inner wall is equipped with a plurality of medicine groove liquid level lines (4-2), PAM medicine groove (4) select PE material or FRP material.
9. The self-adaptive adjustment control system for PAM centralized dosing of a multi-wastewater treatment station according to claim 1, wherein: the dosing system (5) comprises a plurality of dosing pumps (5-1), wherein the inlets of the dosing pumps (5-1) are connected with the outlet of the PAM drug tank (4), and the outlets of the dosing pumps (5-1) are connected to the slow mixing tank (6-4) of the wastewater treatment system (6) through a proportional regulating valve (7).
10. The self-adaptive adjustment control system for PAM centralized dosing of a multi-wastewater treatment station according to claim 1, wherein: the automatic control system also comprises a PLC control system (10), wherein the PLC control system (10) controls the opening and closing or opening of the valve, the stepping motors (1-5) and the pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311846623.6A CN117550700A (en) | 2023-12-29 | 2023-12-29 | Self-adaptive adjusting control system for PAM concentrated dosing of multiple wastewater treatment stations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311846623.6A CN117550700A (en) | 2023-12-29 | 2023-12-29 | Self-adaptive adjusting control system for PAM concentrated dosing of multiple wastewater treatment stations |
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| Publication Number | Publication Date |
|---|---|
| CN117550700A true CN117550700A (en) | 2024-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311846623.6A Pending CN117550700A (en) | 2023-12-29 | 2023-12-29 | Self-adaptive adjusting control system for PAM concentrated dosing of multiple wastewater treatment stations |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117550700A (en) |
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2023
- 2023-12-29 CN CN202311846623.6A patent/CN117550700A/en active Pending
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