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NL2036367B1 - Solid reagent addition device for in-situ chemical oxidation remediation of groundwater - Google Patents

Solid reagent addition device for in-situ chemical oxidation remediation of groundwater Download PDF

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Publication number
NL2036367B1
NL2036367B1 NL2036367A NL2036367A NL2036367B1 NL 2036367 B1 NL2036367 B1 NL 2036367B1 NL 2036367 A NL2036367 A NL 2036367A NL 2036367 A NL2036367 A NL 2036367A NL 2036367 B1 NL2036367 B1 NL 2036367B1
Authority
NL
Netherlands
Prior art keywords
reagent
discharge port
hopper
hopper bin
dosing device
Prior art date
Application number
NL2036367A
Other languages
Dutch (nl)
Other versions
NL2036367A (en
Inventor
Chang Yuhu
Hu Hongxia
Ding Zhenyu
Zhang Yankun
Liu Fengping
Zheng Yinan
Sun Ning
Zhang Jia
Original Assignee
Chinese Academy Of Env Planning
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chinese Academy Of Env Planning filed Critical Chinese Academy Of Env Planning
Priority to NL2036367A priority Critical patent/NL2036367B1/en
Publication of NL2036367A publication Critical patent/NL2036367A/en
Application granted granted Critical
Publication of NL2036367B1 publication Critical patent/NL2036367B1/en

Links

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
    • C02F1/72—Treatment of water, waste water, or sewage by oxidation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00—Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/60—Mixing solids with solids
    • B01F23/64—Mixing solids with solids using rotatable mixing elements at the lower end of discharge hoppers
    • 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
    • B01F35/10—Maintenance of mixers
    • B01F35/145—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means
    • B01F35/1452—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means using fluids
    • B01F35/1453—Washing or cleaning mixers not provided for in other groups in this subclass; Inhibiting build-up of material on machine parts using other means using fluids by means of jets of fluid, e.g. air
    • 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
    • B01F35/211—Measuring of the operational parameters
    • B01F35/2111—Flow rate
    • 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
    • B01F35/211—Measuring of the operational parameters
    • B01F35/2117—Weight
    • 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
    • B01F35/22—Control or regulation
    • B01F35/221—Control or regulation of operational parameters, e.g. level of material in the mixer, temperature or pressure
    • B01F35/2214—Speed during the operation
    • B01F35/22142—Speed of the mixing device during the operation
    • B01F35/221422—Speed of rotation of the mixing axis, stirrer or receptacle during the operation
    • 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
    • B01F35/7173—Feed mechanisms characterised by the means for feeding the components to the mixer using gravity, e.g. from a hopper
    • B01F35/71731—Feed mechanisms characterised by the means for feeding the components to the mixer using gravity, e.g. from a hopper using a hopper
    • 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
    • B01F35/80—Forming a predetermined ratio of the substances to be mixed
    • B01F35/88—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise
    • B01F35/881—Forming a predetermined ratio of the substances to be mixed by feeding the materials batchwise by weighing, e.g. with automatic discharge
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09C—RECLAMATION OF CONTAMINATED SOIL
    • B09C1/00—Reclamation of contaminated soil
    • B09C1/002—Reclamation of contaminated soil involving in-situ ground water treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09C—RECLAMATION OF CONTAMINATED SOIL
    • B09C1/00—Reclamation of contaminated soil
    • B09C1/08—Reclamation of contaminated soil chemically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09C—RECLAMATION OF CONTAMINATED SOIL
    • B09C2101/00—In situ
    • 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
    • C02F2103/06—Contaminated groundwater or leachate
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00—Apparatus for treatment of water, waste water or sewage
    • C02F2201/002—Construction details of the apparatus
    • C02F2201/005—Valves
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Soil Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Organic Chemistry (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)

Abstract

The present invention provides a solid reagent addition device for in-situ chemical oxidation remediation of groundwater, including a hopper bin. The hopper bin has a square structure and is configured to store a reagent. A bottom of the hopper bin is provided with a discharge port. According to the present invention, the hopper bin is arranged to prepare the reagent, a hopper is arranged to control an amount of the reagent, a stirring paddle is arranged to accelerate dissolution, and a rotary nozzle is arranged to inject water and rinse an inner wall of the hopper bin, thereby ensuring a feeding effect of the powdery reagent and keeping the hopper bin clean as a whole.

Description

SOLID REAGENT ADDITION DEVICE FOR IN-SITU CHEMICAL
OXIDATION REMEDIATION OF GROUNDWATER
BACKGROUND OF THE INVENTION Field of the Invention
The present invention belongs to the technical field of reagent addition, and in particular relates to an amount-controllable reagent addition device, specifically a reagent dispensing device for soil remediation.
Description of the Related Art
In-situ chemical oxidation, as an effective remediation technology for organic pollution in soil and groundwater, has received more and more extensive attention. The in-situ chemical oxidation technology can effectively and fundamentally remove pollutants without destroying the original topography of the site, and is widely used in the remediation of organic pollution in soil and groundwater. The in-situ chemical oxidation technology often requires extremely oxidizing reagents, that are highly oxidizing and corrosive and require the use of special injection equipment during the preparation and use.
In the traditional reagent addition method, after direct filling, the raw material is taken down and weighed manually, and then the raw material 1s added or removed manually achieve the required weight. This method is inconvenient to operate and low in efficiency.
BRIEF SUMMARY OF THE INVENTION
The present invention provides an amount-controllable reagent addition device. A hopper bin 1s arranged to prepare the reagent, a hopper is arranged to control an amount of the reagent, a stirring paddle 1s arranged to accelerate dissolution, and a rotary nozzle is arranged to inject water and rinse an inner wall of the hopper bin, thereby ensuring a feeding effect of the powdery reagent and keeping the hopper bin clean as a whole.
In order to solve the above problems, the technical solution adopted by the present invention is as follows:
An amount-controllable reagent addition device includes: a hopper bin, having a square structure and configured to store a reagent, a bottom of the hopper bin being provided with a discharge port;
a hopper, located above the hopper bin and communicating with the hopper bin, the hopper including a flow monitoring sensor, a control box and a discharge port valve for controlling an amount of the reagent; and a stirring paddle, located in the hopper bin, connected with a motor and configured to stir the reagent.
The reagent addition device further includes a rotary nozzle, located in the hopper bin and externally connected with a water pipe.
The control box includes a controller, a valve switch and a display screen.
The controller is connected with the flow monitoring sensor, the valve switch and the display screen.
The discharge port valve is controlled by the valve switch.
The present invention has the following beneficial effects: the hopper bin is arranged to prepare the reagent, the hopper is arranged to control the amount of the reagent, the stirring paddle 1s arranged to accelerate dissolution, and the rotary nozzle 1s arranged to inject water and rinse the inner wall of the hopper bin, thereby ensuring the feeding effect of the powdery reagent and keeping the hopper bin clean as a whole.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a schematic structural view of a reagent addition device; and
FIG. 2 1s a top view of a hopper.
In the figures: 1-hopper bin, 2-hopper, 3-stirring paddle, 4-discharge port, 5-flow monitoring sensor, 6-control box, 7-discharge port valve, 8-motor, 9-rotary nozzle, 10-base.
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIG. 1 to FIG. 2, this embodiment provides an amount-controllable reagent addition device, including a hopper bin 1, a hopper 2 and a stirring paddle 3. The hopper bin has a square structure, and is configured to store a reagent. A bottom of the hopper bin is provided with a base 10 and a discharge port 4. The hopper is located above the hopper bin and communicates with the hopper bin. The hopper includes a flow monitoring sensor 5, a control box 6 and a discharge port valve 7 for controlling an amount of the reagent. The stirring paddle is located in the hopper bin, connected with a motor 8 and configured to stir the reagent.
The reagent addition device further includes a rotary nozzle 9, located in the hopper bin 1 and externally connected with a water pipe. The control box 6 includes a controller, a valve switch and a display screen. The controller is connected with the flow monitoring sensor, the valve switch and the display screen. The discharge port valve 1s controlled by the valve switch. According to the present application, the hopper bin 1s arranged to prepare the reagent, the hopper is arranged to control the amount of the reagent, the stirring paddle is arranged to accelerate dissolution, and the rotary nozzle is arranged to inject water and rinse the inner wall of the hopper bin, thereby ensuring the feeding effect of the powdery reagent and keeping the hopper bin clean as a whole. Thereby, the problem that the reagent corrodes the machine is solved.
During operation, the reagent is added into the hopper bin 1, and then, the flow of the reagent is detected by the flow monitoring sensor 5. The flow data is fed back to the controller, which is connected with the stirring paddle 3. Thereby, when the reagent 1s applied, the stirring speed of the stirring paddle is adjusted to control the outflow speed of the reagent.
Thus, the data obtained by the sensor is transmitted to the controller, and the controller controls the rotation speed of the motor, thereby controlling the rotation of the stirring paddle, accelerating the mixing of the reagent and avoiding agglomeration. This is because some reagents are crushed granules or some mixed granules. These granules are viscous, and usually agglomerate in the hopper. Only by stirring can the agglomerated granules be dispersed and flow out of the discharge port.
In some implementations, in order to make the reagent smoothly come out of the discharge port, the discharge port 1s externally connected with a blower. The blower (omitted) has an air outlet which communicates with the discharge port. Thereby, the air blown from the blower is blown out from the side of the discharge port, thereby driving the solid reagent near the discharge port to be ejected from the discharge port. The solid reagent of the present invention is mainly in the form of pulvis, small granules or powder. After one solid reagent is used up, the rotary nozzle 9 is turned on such that the inner surface of the hopper bin is rinsed with water. Then the hopper bin is dried, and another solid reagent may be put into use. The feeding speed of the hopper is controlled by the sensor, so that the total amount of the solid reagent entering the hopper can be controlled, thereby keeping the amount of the solid reagent in the hopper constant.
In order to better control the relationship between the inflow of the reagent and the amount of the reagent blown out of the discharge port, the discharge port may be provided with a second flow monitoring sensor that can detect the flow velocity of the reagent blown out of the discharge port.
In this way, there is always a proportional relation between the solid reagent entering from the hopper and the solid reagent flowing out of the discharge port.
This relation can be adjusted totally by means of the controller.
This adjustment may be the adjustment of the concentration applied based on properties of different solid reagents, or the adjustment of the concentration of the solid reagent applied according to different types of soil.
In this way, the reagent can be applied uniformly, and automated processing can be realized.

Claims (6)

CONCLUSIESCONCLUSIONS 1. Vastestofreagentia-doseerinrichting voor in-situ chemische oxidatiesanering van grondwater, gekenmerkt doordat het bevat: 5 een emmerbak met een vierkante structuur en geconfigureerd voor het opslaan van reagentia, een bodem van de emmerbak is voorzien van een afvoerpoort; een trechter, gelegen boven de emmerbak en in verbinding met de emmerbak, welke trechter een stroombewakingssensor, een besturingskast en een afvoerpoortklep voor het regelen van de dosering van de reagentia bevat; en een roerstaaf , gelegen in de emmerbak en verbonden met een motor en geconfigureerd voor het roeren van de reagentia.1. A solid reagent dosing apparatus for in-situ chemical oxidation remediation of groundwater, characterized in that it comprises: 5 a bucket pan having a square structure and configured to store reagents, a bottom of the bucket pan being provided with a discharge port; a funnel, located above the bucket pan and communicating with the bucket pan, the funnel containing a flow monitoring sensor, a control box and a discharge port valve for controlling the dosing of the reagents; and a stirring rod, located in the bucket pan and connected to a motor and configured to stir the reagents. 2. Reagentia-doseerinrichting volgens conclusie 1, gekenmerkt doordat de reagentiadoseerinrichting verder een draaibaar mondstuk bevat dat zich in de emmerbak bevindt en uitwendig verbonden is met een waterleiding.2. A reagent dosing device according to claim 1, characterized in that the reagent dosing device further comprises a rotatable nozzle located in the bucket tray and externally connected to a water line. 3. Reagentia-doseerinrichting volgens conclusie 1, gekenmerkt doordat de besturingskast een regelaar, een klepschakelaar en een beeldscherm bevat.3. Reagent dosing device according to claim 1, characterised in that the control box comprises a controller, a valve switch and a display. 4. Reagentia-doseerinrichting volgens conclusie 3, gekenmerkt doordat de regelaar verbonden is met een debietbewakingssensor, de klepschakelaar en het beeldscherm.4. A reagent dosing device according to claim 3, characterized in that the controller is connected to a flow monitoring sensor, the valve switch and the display. 5. Reagentia-doseerinrichting volgens conclusie 4, gekenmerkt doordat de afvoerpoortklep bedienbaar is door de klepschakelaar.5. A reagent dosing device according to claim 4, characterized in that the discharge port valve is operable by the valve switch. 6. Reagentia-doseerinrichting volgens conclusie 5, gekenmerkt doordat de afvoerpoortklep bestuurbaar is door de klepschakelaar, en de afvoerpoort voorzien Is van een tweede stroombewakingssensor verbonden met de controller.6. A reagent dosing device according to claim 5, characterized in that the discharge port valve is controllable by the valve switch, and the discharge port is provided with a second flow monitoring sensor connected to the controller.
NL2036367A 2023-11-28 2023-11-28 Solid reagent addition device for in-situ chemical oxidation remediation of groundwater NL2036367B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
NL2036367A NL2036367B1 (en) 2023-11-28 2023-11-28 Solid reagent addition device for in-situ chemical oxidation remediation of groundwater

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2036367A NL2036367B1 (en) 2023-11-28 2023-11-28 Solid reagent addition device for in-situ chemical oxidation remediation of groundwater

Publications (2)

Publication Number Publication Date
NL2036367A NL2036367A (en) 2023-12-12
NL2036367B1 true NL2036367B1 (en) 2024-07-08

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Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IE980459A1 (en) * 1997-06-13 1998-12-16 Vervant Ltd A blender
US10675599B2 (en) * 2017-07-31 2020-06-09 Sterling Products, Inc. Mixing paddle for a gravimetric blender
CN112221420A (en) * 2020-11-11 2021-01-15 湖南黄俊记食品科技有限公司 Preserved fruit processing is with device of flavouring

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