CN213231789U - Chemical wastewater integrated automatic treatment device - Google Patents
Chemical wastewater integrated automatic treatment device Download PDFInfo
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- CN213231789U CN213231789U CN202021076603.7U CN202021076603U CN213231789U CN 213231789 U CN213231789 U CN 213231789U CN 202021076603 U CN202021076603 U CN 202021076603U CN 213231789 U CN213231789 U CN 213231789U
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Abstract
The chemical wastewater integrated automatic treatment device comprises a chemical wastewater integrated automatic treatment device, wherein the following components are sequentially connected through a pipeline, a metering pump is arranged on an alkaline liquid barrel, a metering pump is arranged on a calcium liquid barrel, a stirrer and a PH online detector are arranged on a PH adjusting tank, a filler is arranged in a reaction sedimentation tank, and a PH online detector is arranged in a PH adjusting tank; respectively filling alkali liquor, calcium liquor and hydrochloric acid into an alkali liquor barrel, a calcium liquor barrel and a hydrochloric acid barrel, starting a self-priming pump of a siphon tank, continuously feeding wastewater into a PH adjusting tank after setting the wastewater to be at a rated treatment flow rate, respectively starting metering pumps of the alkali liquor barrel and the calcium liquor barrel by a PLC (programmable logic controller) control program to add medicaments into the PH adjusting tank, inputting the wastewater adjusted to PH13.0 into a reaction sedimentation tank through a pipeline, reacting and precipitating the wastewater with the medicaments in the reaction sedimentation tank, overflowing the wastewater into a PH adjustment tank at the upper part of the reaction sedimentation tank, and discharging the wastewater qualified in water quality treatment through online analysis; the beneficial effects are as follows: the adding amount of the medicament is automatically adjusted, so that the wastewater treatment quality is controlled conveniently.
Description
Technical Field
The utility model belongs to the chemical industry equipment field, concretely relates to chemical industry waste water integration automatic processing apparatus.
Background
In the chemical production process, a large amount of silicate wastewater is produced, and the wastewater is usually stored in a wastewater tank, and the wastewater and filter residue are separated by adding medicaments such as flocculating agent into the tank and then entering a plate-and-frame filter press through an input pump. Adding a medicament into the separated wastewater for treatment. The wastewater treatment process can not be continuously operated, the fluctuation of the wastewater treatment result is large, the qualified discharge of the wastewater can not be achieved, and the automatic control can not be realized, so that no good technical scheme is provided for solving the defect at present.
Disclosure of Invention
The utility model discloses a chemical industry waste water integration automatic processing apparatus sets up the handling capacity on the PLC procedure, gathers the data of PH value on-line measuring feedback, the addition of automatically regulated medicament, the outer row of water quality testing is qualified again.
In order to achieve the purpose, the device of the utility model is realized in the following way, the following components are sequentially connected by pipelines, a metering pump is arranged on an alkaline liquid barrel, a metering pump is arranged on a calcium liquid barrel, a stirrer and a PH on-line detector are arranged on a PH adjusting tank, a filler is arranged in a reaction sedimentation tank, and a PH on-line detector is arranged in a PH adjusting tank; respectively filling alkali liquor, calcium liquor and hydrochloric acid into an alkali liquor barrel, a calcium liquor barrel and a hydrochloric acid barrel, starting a self-priming pump of a siphon tank, continuously feeding wastewater into a PH adjusting tank after setting the wastewater to be at a rated treatment flow rate, respectively starting metering pumps of the alkali liquor barrel and the calcium liquor barrel by a PLC (programmable logic controller) control program to add medicaments into the PH adjusting tank, inputting the wastewater adjusted to PH13.0 into a reaction sedimentation tank through a pipeline, reacting and precipitating the wastewater in the reaction sedimentation tank with the medicaments, overflowing the wastewater at the upper part of the reaction sedimentation tank into a PH adjustment-back tank, and discharging the wastewater qualified in water quality treatment through online analysis; the principle flow is as follows: since the pH of the wastewater before treatment was 12.3, metasilicate was present mainly as metasilicate, but H was present2SiO3And HSiO3 -Still occupies a fraction of nearly 24% and affects the chemical reaction of metasilicate, so that it is necessary to adjust the pH of the waste water to 13.0 at which the metasilicate in the waste water is mainly in the metasilicate ion state [ SiO ]3 2-]The existing metasilicate accounts for more than 94 percent, and calcium silicate and calcium fluoride which are difficult to dissolve in water are generated to precipitate immediately after calcium chloride is added, and the chemical reaction is as follows:
Na2SiO3 + CaCl2 = CaSiO3↓+2NaCl
2NaF + CaCl2 = CaF2↓+2NaCl
the calcium metasilicate and calcium fluoride produced are insoluble substances, and the following equilibrium is formed in alkaline water:
SiO3 2- + Ca2+ ↔ CaSiO3 KSP=[SiO3 2-]×[Ca2+]=2.5×10-8
Ca2+ + 2F- ↔ CaF2 KSP=[F-]2×[Ca2+]=2.7×10-11
according to the principle of the same ion effect, when calcium salt is added in a moderate excess amount, the metasilicate content in the wastewater is lower than 10mg/L, and the fluorine ion content is lower than 1 mg/L. Experimental and debugging results show that: the amount of excess calcium salt depends on the metasilicate and the pH at equilibrium, the higher the pH, the less calcium salt is required.
And adjusting the pH value of the wastewater to 6-9 by adding hydrochloric acid, and discharging the wastewater after the wastewater is detected to be qualified. In order to remove other organic pollutants, a proper amount of flocculating agent and coagulant aid can be added into the sedimentation tank according to the concentration of the organic pollutants in the wastewater, so that the effects of coagulation, sedimentation and clarification are achieved, and the wastewater treatment quality is improved.
The utility model has the advantages that: pH value equalizing basin, reaction sedimentation tank, pH value callback pond, callback pump and dosing equipment and electrical control unit all can assemble in same sled, form integrated effluent treatment plant to reduce area, set up the handling capacity simultaneously on the PLC procedure, gather the data of pH value on-line measuring feedback, the addition of automatically regulated medicament, the effluent treatment quality of being more convenient for is controlled.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Drawings
In the figure, 1, an alkaline liquid barrel, 2, a calcium liquid barrel, 3, a siphon tank, 4, a PH adjusting tank, 5, a hydrochloric acid barrel, 6, a reaction sedimentation tank and 7, a PH adjusting tank are arranged.
FIG. 1 is a schematic structural view of the chemical wastewater integrated automatic treatment device of the present invention.
Detailed Description
According to the chemical wastewater integrated automatic treatment device shown in the figure 1, the following components are sequentially connected through a pipeline, a metering pump is arranged on an alkaline liquid barrel 1, a metering pump is arranged on a calcium liquid barrel 2, a stirrer and a PH online detector are arranged on a PH adjusting tank 4, a filler is arranged in a reaction sedimentation tank 6, and a PH online detector is arranged in a PH readjusting tank 7.
The operation procedure is as follows: alkali liquor, calcium liquid, hydrochloric acid pack into alkali liquor bucket 1 respectively, calcium liquid bucket 2, in hydrochloric acid bucket 5, start the self priming pump of siphon jar 3, after setting up to rated treatment flow, waste water gets into in the PH equalizing basin 4 in succession, PLC control program starts the measuring pump of alkali liquor bucket 1 and calcium liquid bucket respectively and adds the medicament to PH equalizing basin 4, the waste water input that will adjust for PH13.0 through the pipeline is to reacting sedimentation tank 6 in, waste water reacts with the medicament in reacting sedimentation tank 6, deposit, overflow at reacting sedimentation tank 6's upper portion and get into PH back adjustment tank 7 in, through on-line analysis, qualified waste water of water quality treatment is discharged outward.
Claims (1)
1. The chemical wastewater integrated automatic treatment device is characterized in that the following components are sequentially connected through pipelines, a metering pump is arranged on an alkaline liquid barrel (1), a metering pump is arranged on a calcium liquid barrel (2), a stirrer and a PH online detector are arranged on a PH adjusting tank (4), a filler is arranged in a reaction sedimentation tank (6), and a PH online detector is arranged in a PH readjusting tank (7).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021076603.7U CN213231789U (en) | 2020-06-12 | 2020-06-12 | Chemical wastewater integrated automatic treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021076603.7U CN213231789U (en) | 2020-06-12 | 2020-06-12 | Chemical wastewater integrated automatic treatment device |
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| Publication Number | Publication Date |
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| CN213231789U true CN213231789U (en) | 2021-05-18 |
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| CN202021076603.7U Active CN213231789U (en) | 2020-06-12 | 2020-06-12 | Chemical wastewater integrated automatic treatment device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114715995A (en) * | 2022-03-03 | 2022-07-08 | 杭雨荷 | Automatic adjusting device of printing and dyeing industry waste water pH value |
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2020
- 2020-06-12 CN CN202021076603.7U patent/CN213231789U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114715995A (en) * | 2022-03-03 | 2022-07-08 | 杭雨荷 | Automatic adjusting device of printing and dyeing industry waste water pH value |
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