CN214031862U - Dechlorination system for discharging sterilized water in clean water tank and newly-installed pipeline - Google Patents
Dechlorination system for discharging sterilized water in clean water tank and newly-installed pipeline Download PDFInfo
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- CN214031862U CN214031862U CN202022856606.9U CN202022856606U CN214031862U CN 214031862 U CN214031862 U CN 214031862U CN 202022856606 U CN202022856606 U CN 202022856606U CN 214031862 U CN214031862 U CN 214031862U
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Abstract
The embodiment of the utility model discloses discharge dechlorination system of clean water basin and new dress pipeline sterilized water, include the control unit, react the unit and advance kind unit, throw the unit, abandon a kind unit, the reaction unit is through throwing the unit and adding quantitative medicament according to the inflow and carrying out dechlorination to the water body of treating, through the water body of treating of dechlorination discharge through abandoning a kind unit, the control unit makes medicament and the water body of treating fully reacting in order to reach chlorine residue emission standard according to the flow information of pipeline flowmeter and the residual chlorine content control of detecting element throw the medicament volume of adding of unit and the processing parameter of reaction unit; the utility model discloses can directly carry out quick dechlorination to clean water basin, new dress pipeline disinfection discharge water, this system is based on PLC's feedback regulation control for whole dechlorination process is in automatic control, makes the residual chlorine content of pending water stably keep below emission standard.
Description
Technical Field
The embodiment of the utility model provides a relate to technical field, concretely relates to dechlorination system is put on in clear water basin and new dress pipeline sterilized water's emission.
Background
The disinfection of the clean water tank requires 30mg/L of available chlorine to be soaked in the tank for 24 hours for disinfection, and the residual amount in the water is more than 20mg/L after the disinfection. The newly installed pipeline is required to be soaked in 20mg/L of available chlorine for 24 hours for disinfection, and the residual amount in water is more than 10mg/L after disinfection. The soaking water after the clean water tank and the newly-installed pipeline are used can cause great influence on the ecological environment if the soaking water is directly discharged without being treated.
The water quality standard for sewage discharged into urban sewers GB/T31962-2015 specifies that the residual chlorine discharged into urban sewers is not more than 8mg/L, and the requirements of the clean water pool and newly-installed pipeline for disinfecting and discharging water exceed the standard for residual chlorine. At 10 ten thousand meters3For example, in a/d water plant, the total volume of the clean water tank is 10000m3Each clean water tank (in terms of two tanks) has a volume of 5000m3If the disinfected water is discharged to a town sewer, the water inflow of a sewage plant can be changed violently, and the residual water in the water can have great influence on the sewage treatment process and cannot be directly discharged into the sewer.
As the sterilized water in the clean water tank and the newly-installed pipeline is the chlorinated tap water, the discharged water can meet the requirements of the Integrated wastewater discharge Standard GB 8978 and 1996 except residual chlorine. According to the regulations of Integrated wastewater discharge Standard GB 8978 & 1996, total residual chlorine (dechlorination treatment is required for hospital wastewater adopting chlorination disinfection) is not more than 0.50mg/L, the disinfected water in a clean water tank and a newly-installed pipeline can be directly discharged after dechlorination, and the residual chlorine in the discharged water is not more than 0.50 mg/L.
However, the existing dechlorination device needs to be manually involved in the whole process, and the residual chlorine content of the discharged water cannot be accurately controlled, so that the whole dechlorination process is difficult to be in an effective and stable operation process.
Disclosure of Invention
Therefore, the embodiment of the utility model provides a dechlorination system is arranged in discharge of clean water basin and new dress pipeline sterile water to need the artificial whole problem of participating in and unable effective steady operation for a long time among the solution prior art.
In order to achieve the above object, the embodiments of the present invention provide the following technical solutions:
a dechlorination system for discharging sterilized water in a clean water tank and a newly-installed pipeline comprises a control unit, a reaction unit, a sample feeding unit, a sample discarding unit and a water inlet unit, wherein the sample feeding unit, the feeding unit and the sample discarding unit are respectively connected with the reaction unit;
the reaction unit comprises a reaction tank and a reagent zone, the reagent zone is connected with the reaction tank through a feeding unit, a stirrer is arranged in the reaction tank through a support, and a stirring paddle is arranged at the tail end of the stirrer;
the device comprises a sample introduction unit, a pipeline flowmeter is arranged on the sample introduction unit, the pipeline flowmeter transmits flow information to a control unit, and the control unit controls the adding amount of a medicament of a adding unit and the processing parameters of a reaction unit according to the flow information of the pipeline flowmeter and the residual chlorine content of a detection unit so that the medicament and a water body to be treated fully react to reach the residual chlorine discharge standard.
As an optimized proposal of the utility model, the sample introduction unit is specifically the inlet tube communicated with the reaction tank, and the pipeline flowmeter and the water inlet valve are arranged on the inlet tube in order along the water inlet flow direction.
As an optimized scheme of the utility model, abandon a kind unit specifically be with the outlet pipe of reaction tank intercommunication detection unit and outlet valve door are provided with in order along the play water flow direction on the outlet pipe.
As an optimized proposal of the utility model, the detection unit is a residual chlorine content on-line monitoring sensor for monitoring the residual chlorine content of the treated water.
As an optimized scheme of the utility model, the control unit specifically is the PLC controller, the input of PLC controller respectively with pipeline flowmeter and chlorine residue content on-line monitoring sensor electric connection, just the output of PLC controller with measurement dosing pump, inlet valve, outlet valve, agitator electric connection, the PLC controller is based on the stirring rotational speed of flow information and chlorine residue content control stirring rake to and the purification difference of medicament addition volume in order to satisfy inflow and water yield.
As a preferred scheme of the utility model, the processing parameter of the reaction unit is the stirring speed of the stirring paddle.
As an optimized proposal of the utility model, the adding unit is a metering adding pump, the reagent in the reagent area is quantitatively added into the reaction tank through the metering adding pump.
The utility model discloses an embodiment has following advantage:
the utility model discloses can directly carry out quick dechlorination to clean water basin, new dress pipeline disinfection discharge water, this system is based on PLC's feedback regulation control for whole dechlorination process is in automatic control, makes the residual chlorine content of pending water stably keep below emission standard.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.
The structure, ratio, size and the like shown in the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by people familiar with the technology, and are not used for limiting the limit conditions which can be implemented by the present invention, so that the present invention has no technical essential significance, and any structure modification, ratio relationship change or size adjustment should still fall within the scope which can be covered by the technical content disclosed by the present invention without affecting the efficacy and the achievable purpose of the present invention.
Fig. 1 is a block diagram of the structure in the embodiment of the present invention;
fig. 2 is a block diagram of an overall system according to an embodiment of the present invention;
fig. 3 is a system block diagram of a control process in an embodiment of the present invention.
In the figure: 1-a control unit; 2-a reaction unit; 3-sample introduction unit; 4-adding unit; 5-a sample discarding unit; 6-a detection unit;
101-a PLC controller;
201-a reaction tank; 202-reagent zone; 203-metering dosing pump; 204-a stirrer; 205-stirring paddle;
301-a pipeline flow meter; 302-water inlet pipe; 303-water inlet valve;
501-water outlet pipe; 502-outlet valve;
601-residual chlorine content on-line monitoring sensor.
Detailed Description
The present invention is described in terms of specific embodiments, and other advantages and benefits of the present invention will become apparent to those skilled in the art from the following disclosure. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 to 3, the utility model provides a dechlorination system is arranged in discharge of clean water basin and new dress pipeline sterile water, including the control unit 1, reaction unit 2 and respectively with reaction unit 2 connects advance kind unit 3, throw with unit 4, abandon kind unit 5, advance kind unit 3 and introduce pending water in reaction unit 2, reaction unit 2 adds quantitative medicament and carries out dechlorination to pending water according to the inflow through throwing with unit 4, and the pending water through dechlorination is discharged through abandoning kind unit 5, just abandoning and being provided with the detecting element 6 that is used for monitoring residual chlorine content on the kind unit 5.
In the embodiment, the control of the chemical dosage and the reaction unit parameters is realized by the control unit 1 based on the detection unit 6 and the monitoring of the flow, so that the residual chlorine amount of the water body to be treated is treated to the emission standard level.
Wherein, the control unit 1 adopts the mode of feedback control to control entire system to make medicament dosage etc. be in effective range, neither add nor add a little promptly, make the residual chlorine volume of pending water handle just exactly.
Be provided with pipeline flowmeter 301 on advancing kind unit 3, pipeline flowmeter 301 transmits flow information to the control unit 1, the control unit 1 adds the medicament of throwing unit 4 and reacts the processing parameter of unit 2 (the processing parameter of reaction unit 2 specifically is the stirring rotational speed of stirring rake 205) according to pipeline flowmeter 301's flow information and the chlorine residue content control of detecting element 6 and makes medicament and pending water fully react in order to reach chlorine residue emission standard.
The reaction unit 2 comprises a reaction tank 201 and a reagent area 202, the reagent area 202 is connected with the reaction tank 201 through a feeding unit 4, a stirrer 204 is installed in the reaction tank 201 through a support, and a stirring paddle 205 is installed at the tail end of the stirrer 204.
The sample introduction unit 3 is specifically a water inlet pipe 302 communicated with the reaction tank 201, and a pipeline flowmeter 301 and a water inlet valve 303 are sequentially arranged on the water inlet pipe 302 along the water inlet flow direction.
The sample discarding unit 5 is specifically a water outlet pipe 501 communicated with the reaction tank 201, and a detection unit 6 (specifically a CL17 type online residual chlorine analyzer) and a water outlet valve 502 are sequentially arranged on the water outlet pipe 501 along the water outlet flow direction.
The detection unit 6 is specifically a residual chlorine content on-line monitoring sensor 601 for monitoring the residual chlorine content of the water body to be treated.
The control unit 1 specifically is PLC controller 101 (specifically is S7-200 type PLC), PLC controller 101 'S input respectively with pipeline flowmeter 301 and chlorine residue content on-line monitoring sensor 601 electric connection, just PLC controller 101' S output with measurement dosing pump 203, inlet valve 303, outlet valve 502, agitator 204 electric connection, PLC controller 101 is based on the stirring rotational speed of flow information and chlorine residue content control stirring rake 205 to and the purification difference of medicament addition volume in order to satisfy inflow and outflow.
The adding unit 4 is specifically a metering and adding pump 203, and the medicament in the reagent zone 202 is quantitatively added to the reaction tank 201 through the metering and adding pump 203.
In the utility model, the added medicament is specifically sodium thiosulfate (Na)2S2O3·5H2O, the concentration is 400g/L), and the principle of treating residual chlorine in the water body is as follows:
after sodium thiosulfate is added into the clean water tank and newly-installed pipeline disinfection discharge water, the sodium thiosulfate can be subjected to oxidation reaction with residual chlorine in the water body, the residual chlorine is consumed, sodium sulfate and sodium chloride are generated, the environment is not damaged, and the reaction equation is as follows:
Na2S2O3+4NaClO+H2O→Na2SO4+H2SO4+4NaCl。
the oxidation reaction of the sodium thiosulfate and the residual chlorine can be completely reacted within 10s generally, so the dechlorinating device can quickly and continuously perform dechlorinating treatment.
Based on the system, the specific processing steps are as follows:
(1) the PLC controls the starting of the water inlet valve, and the pipeline flowmeter detects the flow of the inlet water and inputs the inlet water into the PLC;
(2) the PLC controls and starts a metering dosing pump, sodium thiosulfate solution (400g/L) is added into the reactor, and the adding amount of the sodium thiosulfate realizes automatic control according to the residual chlorine amount, the inflow rate and the concentration of the sodium thiosulfate solution of the water sample to be treated;
(3) the PLC controls the starting of the stirrer to drive the stirring paddle to rotate so as to promote the mixing of the water body and the medicament, and the drainage valve is started;
(4) the PLC controls and starts the residual chlorine content on-line monitoring sensor;
(5) and feeding the residual chlorine detection result back to the PLC, comparing the residual chlorine detection result with a preset threshold range, judging whether the treated effluent is within the threshold range, and then controlling a metering pump to adjust the adding of the medicament by the PLC according to a judgment rule shown in a table 1.
TABLE 1 decision rules
The dechlorination device can be used for continuously dechlorinating a water sample to be treated.
Although the invention has been described in detail with respect to the general description and the specific embodiments, it will be apparent to those skilled in the art that modifications and improvements can be made based on the invention. Therefore, such modifications and improvements are intended to be within the scope of the invention as claimed.
Claims (6)
1. The utility model provides a dechlorination system of discharging of clean water basin and newly-installed pipeline sterile water, which characterized in that, including the control unit (1), reaction unit (2) and respectively with advance kind unit (3), throw with unit (4), abandon kind unit (5) that reaction unit (2) are connected, advance kind unit (3) and introduce the water body of treating in reaction unit (2), reaction unit (2) are thrown with unit (4) and are added quantitative medicament according to the inflow and carry out dechlorination treatment to the water body of treating, and the water through dechlorination treatment is discharged through abandoning kind unit (5), and is provided with detecting element (6) that are used for monitoring residual chlorine content on abandoning kind unit (5);
the reaction unit (2) comprises a reaction tank (201) and a reagent zone (202), the reagent zone (202) is connected with the reaction tank (201) through a feeding unit (4), a stirrer (204) is installed in the reaction tank (201) through a support, and a stirring paddle (205) is installed at the tail end of the stirrer (204);
be provided with pipeline flowmeter (301) on advance kind unit (3), pipeline flowmeter (301) transmit flow information to control unit (1), control unit (1) control the medicament of throwing with unit (4) and the processing parameter of reaction unit (2) makes medicament and pending water fully react in order to reach chlorine residue emission standard according to the flow information of pipeline flowmeter (301) and the chlorine residue content control of detecting element (6).
2. The discharging and dechlorinating system of the sterilized water in the clean water tank and the newly installed pipeline according to claim 1, characterized in that the sample injection unit (3) is specifically a water inlet pipe (302) communicated with the reaction tank (201), and a pipeline flow meter (301) and a water inlet valve (303) are sequentially arranged on the water inlet pipe (302) along the water inlet flow direction.
3. The discharging dechlorination system of the disinfected water in the clean water tank and the newly installed pipeline according to claim 2 is characterized in that the sample discarding unit (5) is a water outlet pipe (501) communicated with the reaction tank (201), and the water outlet pipe (501) is sequentially provided with a detection unit (6) and a water outlet valve (502) along the water outlet flow direction.
4. The discharge dechlorination system of the sterilized water in the clean water tank and the newly-installed pipeline according to claim 3, wherein the detection unit (6) is a residual chlorine content on-line monitoring sensor (601) for monitoring the residual chlorine content of the treated water body.
5. The dechlorination system for discharging the sterilized water in the clean water tank and the newly-installed pipeline according to claim 4, it is characterized in that the feeding unit (4) is a metering feeding pump (203), the medicament in the reagent area (202) is quantitatively added into the reaction pool (201) through a metering and adding pump (203), the control unit (1) is specifically a PLC (programmable logic controller) (101), the input end of the PLC (101) is respectively and electrically connected with the pipeline flowmeter (301) and the residual chlorine content on-line monitoring sensor (601), and the output end of the PLC (101) is electrically connected with the metering dosing pump (203), the water inlet valve (303), the water outlet valve (502) and the stirrer (204), the PLC (101) controls the stirring rotating speed of the stirring paddle (205) and the adding amount of the medicament to meet the purification difference value of the water inlet amount and the water outlet amount based on the flow information and the residual chlorine content.
6. Discharge dechlorination system of the disinfected water from a clean water basin and a new installation of pipes according to claim 1 or 5, characterized in that the process parameters of the reaction unit (2) are in particular the stirring speed of the stirring paddles (205).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022856606.9U CN214031862U (en) | 2020-12-02 | 2020-12-02 | Dechlorination system for discharging sterilized water in clean water tank and newly-installed pipeline |
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| CN202022856606.9U CN214031862U (en) | 2020-12-02 | 2020-12-02 | Dechlorination system for discharging sterilized water in clean water tank and newly-installed pipeline |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114349144A (en) * | 2021-11-25 | 2022-04-15 | 合肥供水集团有限公司 | Chlorine-containing wastewater treatment device based on multistage circulation |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114349144A (en) * | 2021-11-25 | 2022-04-15 | 合肥供水集团有限公司 | Chlorine-containing wastewater treatment device based on multistage circulation |
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