CN211111406U - Harmless treatment device for residual liquid of chlorine dioxide generator - Google Patents
Harmless treatment device for residual liquid of chlorine dioxide generator Download PDFInfo
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- CN211111406U CN211111406U CN201921251948.9U CN201921251948U CN211111406U CN 211111406 U CN211111406 U CN 211111406U CN 201921251948 U CN201921251948 U CN 201921251948U CN 211111406 U CN211111406 U CN 211111406U
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- raffinate
- chlorine dioxide
- dioxide generator
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Abstract
The utility model discloses a harmless treatment device for chlorine dioxide generator raffinate, which relates to the field of purification equipment, in particular to a harmless treatment device for chlorine dioxide generator raffinate, comprising a reactor and a filter, wherein the filter is communicated with the reactor, the reactor is provided with a reaction chamber for chemical reaction, the reactor is also communicated with a water inlet pipe, the water inlet pipe is arranged above the side wall of the reactor, the top end of the reactor is also provided with a dosing port for putting in zero-valent iron powder and pH regulating liquid, and a stirring mechanism and a detection mechanism for detecting the pH value in the reaction chamber are arranged in the reaction chamber; secondly, zero-valent iron powder is adopted without any preorder process, the operation is convenient, the continuous treatment can be realized, and the reaction speed is high; the filter can also intercept the sediment in the raffinate, and can also make the pH value and the turbidity of the raffinate meet the discharge standard.
Description
Technical Field
The utility model relates to a clarification plant field especially relates to the innocent treatment device of chlorine dioxide generator raffinate.
Background
Chlorine dioxide disinfection has the advantages of no generation of organic halogenated disinfection byproducts, small usage amount, wide and stable pH range and the like, so the chlorine dioxide disinfection is widely applied to disinfection in the fields of drinking water, industrial circulating cooling water, hospital sewage, swimming pool water, aquaculture water and the like. Chlorine dioxide is usually prepared by reducing sodium chlorate under acidic conditions with hydrochloric acid or hydrogen peroxide and the like by using a compound chlorine dioxide generator. Because the conversion rate of sodium chlorate is only 60 percent in the process, high-concentration chlorate ions (ClO) are generated after the reaction3 -) The strongly acidic waste liquid of (2). In addition, when the reaction in the generator is incomplete, the waste liquid also contains chlorite ions (ClO)2 -). At present, most water plants add the waste liquid and the chlorine dioxide aqueous solution into water to be treated together, or directly discharge the waste liquid after certain dilution. Due to ClO3 -Can destroy red blood cells of human body, cause thyroid dysfunction and kidney damage, ClO2 -Has carcinogenic effect, and thus, the ClO entering the water body3 -And ClO2 -The residual liquid seriously threatens the health of human body.
At present, the residual liquid is treated mainly by a physical method and a chemical reduction method, wherein the physical method mainly comprises an ion exchange membrane, ion exchange resin and activated carbon adsorption. Among them, the ion exchange membrane (or resin) has the disadvantages of high operation cost, unrecyclable membrane, limited removal efficiency and the like, so the ion exchange membrane (or resin) has less application in the aspect of chlorine dioxide raffinate treatment. The activated carbon adsorption method is relatively low in cost, but the treatment efficiency is unstable, and the adsorbed activated carbon still needs to be further subjected to harmless treatment. The chemical reduction method mainly adopts ferrous iron or zero-valent iron as a reducing agent. Compared with ferrous salt, the zero-valent iron has stronger reduction activity and utilizes H in the residual liquid+Can effectively corrode the passivation layer on the surface of the iron powder and realize the efficient utilization of the shell-core structure. A device and a method for harmless treatment of chlorine dioxide generator residual liquid are disclosed in the patent of a device and a method for harmless treatment of chlorine dioxide generator residual liquid (application number: CN 201711013917.5). The method adopts zero-valent iron powder to mix ClO3 -Reduction ofIs Cl-And promoting Fe by air-blown stirring0And ClO3 -So as to realize the high-efficiency removal of the perchlorate in the residual liquid.
However, the treatment method of the residual liquid in the prior art has the defects of long treatment period, high cost, complex operation, discharge standard-reaching pH value of the residual liquid after treatment and the like.
For example, the device disclosed in the invention patent of device and method for harmless treatment of chlorine dioxide generator residual liquid can effectively remove chlorate ions in residual liquid, but the treatment period of the device is 2-2.5h, and air-blowing stirring is adopted, so that the treatment cost is greatly increased, in addition, the iron powder needs to be cleaned by 0.3-0.5 mol/L sulfuric acid before use and washed to be neutral by deionized water, the operation is relatively complicated, the pH value of the treated water body is 5.5-5.7, and the treated water body does not reach the discharge standard (the pH value is 6-9).
SUMMERY OF THE UTILITY MODEL
In order to solve the problem, the utility model provides a chlorine dioxide generator raffinate's innocent treatment device has improved purification efficiency and has shortened the processing time.
The utility model adopts the technical proposal that: the utility model provides a harmless treatment device of chlorine dioxide generator raffinate, includes reactor and filter, filter and reactor intercommunication, the reactor has the reaction chamber that is used for taking place chemical reaction, the reactor still communicates there is the inlet tube, the inlet tube sets up in the lateral wall top of reactor, the top of reactor still is provided with the medicine mouth that adds that is used for putting in zero-valent iron powder and pH regulating solution, be provided with rabbling mechanism in the reaction chamber and be used for detecting the detection mechanism of reaction intracavity pH value.
As a further improvement, the reactor can be dismantled the up end of setting at the filter, the side bottom of reactor is provided with communicating pipe, the other end of communicating pipe communicates in the top of filter, the intussuseption of filter is filled with the filtration filler, the filter still is provided with the outlet pipe.
As a further improvement, the outlet pipe is arranged on the side close to the bottom end of the filter, and the filter filler is filled between the communicating pipe and the outlet pipe.
As a further development of the utility model, inlet tube, communicating pipe and outlet pipe all are provided with the valve.
As a further improvement, the detection mechanism is a pH meter or a pH adjusting and adding instrument.
As a further improvement, the stirring mechanism comprises a stirring paddle and a motor, wherein the stirring paddle is arranged in the reaction cavity and driven by the motor arranged outside the reactor.
As a further improvement of the utility model, the stirring paddle is made of polytetrafluoroethylene materials.
As a further improvement of the utility model, the reactor and the filter are made of transparent materials.
As a further improvement of the utility model, the medicine adding opening is also provided with a sealing cover for sealing the medicine adding opening.
The utility model has the advantages that: the utility model enhances the removal efficiency of the device and shortens the treatment period by communicating the filter with the reactor; secondly, zero-valent iron powder is adopted without any preorder process, the operation is convenient, the continuous treatment can be realized, and the reaction speed is high; the filter can also intercept the sediment in the raffinate, and can also make the pH value and the turbidity of the raffinate meet the discharge standard.
Drawings
The present invention will be further described with reference to the accompanying drawings and embodiments.
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The device for harmless treatment of chlorine dioxide generator raffinate as shown in figure 1 comprises a reactor 1 and a filter 2, wherein the reactor 1 is detachably arranged on the filter 2, and the reactor 1 is communicated with the filter 2. The reactor 1 and the filter 2 can be detachably arranged by means of a threaded connection or a plug-in connection. Reactor 1 is provided with the reaction chamber that is used for taking place chemical reaction, and still reactor 1 still communicates has inlet tube 3 and communicating pipe 7, inlet tube 3 and communicating pipe 7 set up in reactor 1's lateral wall, and wherein inlet tube 3 sets up in the one side that is close to reactor 1 top, and communicating pipe 7 sets up in the one side that is close to reactor 1 bottom. The top end of the reactor 1 is also provided with a dosing port 4 for feeding zero-valent iron powder and pH regulating solution, the dosing port 4 is provided with a sealing cover capable of sealing the dosing port 4, and the sealing cover prevents volatile substances from escaping in the reaction process. The reaction cavity is also provided with a stirring mechanism and a detection mechanism 6 for detecting the pH value in the reaction cavity.
Specifically, the stirring mechanism comprises a stirring paddle 51 and a motor 52, the stirring paddle 51 is arranged in the reaction cavity and is driven by the motor 52 arranged outside the reactor 1, and preferably, the stirring paddle 51 is made of polytetrafluoroethylene material. The stirring mechanism fully mixes the zero-valent iron powder and the residual liquid 10 in the reaction cavity, and compared with other stirring modes, the stirring mechanism has the characteristics of high stirring efficiency, energy consumption saving and treatment period shortening, and the stirring paddle 51 made of polytetrafluoroethylene has stable performance and has the characteristics of no adhesion and corrosion resistance.
The detection mechanism 6 comprises a pH meter or a pH adjusting and dosing meter, and when the detection mechanism 6 adopts pH timing, pH adjusting liquid can be added through the dosing port 4; or a pH meter with a medicine adding function, namely a pH adjusting medicine adding meter can be adopted. The pH adjusting dosing meter is a common device in the art and is readily available. The pH adjusting and dosing meter combines the detection function and the dosing function, and the pH value of the residual liquid 10 can be automatically controlled. The pH adjusting solution generally includes an alkaline solution such as potassium hydroxide or sodium hydroxide.
The aforementioned filter 2 is also provided with a cavity, the filter 2 communicates with the reactor 1 through a communicating tube 7 and the filter 2 is disposed above the reactor 1. A water outlet pipe 9 is also arranged on the side wall of the filter 2, and the water outlet pipe 9 is preferably arranged at the lower end of the side wall of the filter 2. The cavity of the filter 2 is filled with a filter filler 8 for filtering precipitates, and the filter filler 8 can be river sand, quartz sand or activated carbon.
In order to control the flow rate of the residual liquid 10 conveniently, valves are arranged on the water outlet pipe 9, the communicating pipe 7 and the water inlet pipe 3.
The reactor 1 and the filter 2 are both made of transparent materials, so that the reaction condition can be observed conveniently. The transparent material can be corrosion-resistant material such as glass or acrylic plate.
In a whole, the reactor 1 is arranged above the filter 2, so that the residual liquid 10 in the reactor 1 directly flows into the filter 2 under the action of gravity, and power-assisted equipment such as a water pump and the like is not needed, and the energy consumption is further saved; the whole purification process is compact, no other energy consumption is generated except the electricity consumption generated by stirring, the treated precipitate can be used for other purposes, and the purified clean water can be directly discharged; the detachable filter 2 and the reactor 1 are convenient to open, so that the filter packing 8 can be conveniently replaced and the sediment trapped by the filter packing 8 can be conveniently collected. The device can remove chlorate and chlorite in wastewater simultaneously, the removal rate is as high as 95% -100%, the treatment period is only 30-40 minutes, and the efficiency is greatly improved.
The above description is only a preferred embodiment of the present invention, and does not limit the scope of the present invention.
Claims (9)
1. The utility model provides a harmless treatment device of chlorine dioxide generator raffinate which characterized in that: including reactor (1) and filter (2), filter (2) and reactor (1) intercommunication, reactor (1) has the reaction chamber that is used for taking place chemical reaction, reactor (1) still intercommunication has inlet tube (3), inlet tube (3) set up in the lateral wall top of reactor (1), the top of reactor (1) still is provided with and is used for putting into zero valence iron powder and pH regulating solution with medicine mouth (4), be provided with rabbling mechanism in the reaction chamber and be used for detecting detection mechanism (6) of reaction intracavity pH value.
2. The apparatus for harmlessly treating chlorine dioxide generator raffinate of claim 1, wherein: reactor (1) can dismantle the up end that sets up in filter (2), the side bottom of reactor (1) is provided with communicating pipe (7), the other end of communicating pipe (7) communicates in the top of filter (2), the intussuseption of filter (2) is filled with and filters filler (8), filter (2) still are provided with outlet pipe (9).
3. The apparatus for harmlessly treating chlorine dioxide generator raffinate of claim 2, wherein: the water outlet pipe (9) is arranged on the side face close to the bottom end of the filter (2), and the filter filler (8) is filled between the communicating pipe (7) and the water outlet pipe (9).
4. The apparatus for harmlessly treating chlorine dioxide generator raffinate of claim 3, wherein: the water inlet pipe (3), the communicating pipe (7) and the water outlet pipe (9) are all provided with valves.
5. The apparatus for harmlessly treating chlorine dioxide generator raffinate of claim 1, wherein: the detection mechanism (6) is a pH meter or a pH adjusting and dosing meter.
6. The apparatus for harmlessly treating chlorine dioxide generator raffinate of claim 1, wherein: the stirring mechanism comprises a stirring paddle (51) and a motor (52), wherein the stirring paddle (51) is arranged in the reaction cavity and is driven by the motor (52) arranged outside the reactor (1).
7. The apparatus for harmlessly treating chlorine dioxide generator raffinate of claim 6, wherein: the stirring paddle (51) is made of polytetrafluoroethylene materials.
8. The apparatus for harmlessly treating chlorine dioxide generator raffinate of claim 1, wherein: the reactor (1) and the filter (2) are made of transparent materials.
9. The apparatus for harmlessly treating chlorine dioxide generator raffinate of claim 1, wherein: the medicine adding opening (4) is also provided with a sealing cover for sealing the medicine adding opening (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921251948.9U CN211111406U (en) | 2019-08-02 | 2019-08-02 | Harmless treatment device for residual liquid of chlorine dioxide generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921251948.9U CN211111406U (en) | 2019-08-02 | 2019-08-02 | Harmless treatment device for residual liquid of chlorine dioxide generator |
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| Publication Number | Publication Date |
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| CN211111406U true CN211111406U (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921251948.9U Active CN211111406U (en) | 2019-08-02 | 2019-08-02 | Harmless treatment device for residual liquid of chlorine dioxide generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114380381A (en) * | 2021-10-24 | 2022-04-22 | 深圳市深水龙华水务有限公司 | Harmless treatment method and device for chlorine dioxide generator residual liquid |
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- 2019-08-02 CN CN201921251948.9U patent/CN211111406U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114380381A (en) * | 2021-10-24 | 2022-04-22 | 深圳市深水龙华水务有限公司 | Harmless treatment method and device for chlorine dioxide generator residual liquid |
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