CN211999244U - Desulfurization wastewater softening system for power plant - Google Patents
Desulfurization wastewater softening system for power plant Download PDFInfo
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- CN211999244U CN211999244U CN202020610829.4U CN202020610829U CN211999244U CN 211999244 U CN211999244 U CN 211999244U CN 202020610829 U CN202020610829 U CN 202020610829U CN 211999244 U CN211999244 U CN 211999244U
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Abstract
The utility model discloses a desulfurization waste water softening system for a power plant, which relates to the field of equipment for treating waste water in the power plant and comprises a sedimentation tank, a pH value adjusting tank, an electric flocculation-filtering device, a soft water tank and a sludge compression device, wherein a water outlet at the bottom of the sedimentation tank is connected with a waste water lifting pump, one side of the outside of the pH value adjusting tank is provided with an alkali liquid tank, the alkali liquid tank is provided with a dosing pump I and a dosing pump II, the pipeline of the dosing pump I and the waste water lifting pump is communicated with the pH value adjusting tank through a pipeline mixer, the dosing pump II is communicated with the pH value adjusting tank, the water outlet of the pH value adjusting tank is communicated with the electric flocculation-filtering device through a pipeline, the water outlet of the electric flocculation-filtering device is communicated with the soft water tank through a pipeline, and the sewage discharge outlets of the sedimentation tank, the pH value adjusting tank, the electric flocculation-filtering device and the soft water tank are respectively connected with the sludge compression, the outlet water of the sludge compression is communicated with a sedimentation tank through a pipeline, and the compressed sludge is transported away for treatment.
Description
Technical Field
The utility model relates to an equipment field for the waste water treatment of power plant, specific desulfurization waste water softens system for power plant that says so.
Background
The desulfurization waste water is a necessary product produced by a power plant, and a treatment system of the desulfurization waste water is also a key project of each enterprise in the industry. Due to different actual conditions, the modes of treating the desulfurization wastewater by various power plant enterprises are different, some of the modes are more original, and some of the modes are dedicated to the research and development of new treatment modes.
The treatment mode of the desulfurization wastewater mainly comprises three types, namely flocculation precipitation, softening, concentration, evaporation and crystallization, and the mode has high operation and maintenance cost, large floor area and high treatment cost of mixed salt of a product of later-stage evaporation and crystallization; the desulfurization wastewater is subjected to flocculation precipitation and flue evaporation, the flue scaling is serious, the design of an atomization structure influences the evaporation effect, the burden of a dust remover is seriously increased, the temperature of the flue is reduced in the evaporation process, the combustion efficiency of a boiler is reduced, the coal consumption is increased, the treatment capacity is small, the investment is large, the cost is high, the wastewater cannot be recycled, and the national policy of energy conservation and water conservation is not met; thirdly, the technique that patent number 2017210596903 discloses specifically is that desulfurization waste water softens + desalination + electrolysis system chlorine, this kind of mode adopts the modularization equipment design, the handling capacity is not restricted, investment cost is low, the operation maintenance cost is low, independently move outside power plant's power generation system, do not cause the influence to power plant's production, simple process, the in-process need not to add special medicament, can not cause the pollution, the end product is sodium hypochlorite, it is the necessary medicament of power plant's conventional processing, can recycle, realize the zero release of waste water, the water resource has been practiced thrift.
For the third treatment mode, the wastewater softening part has certain technical problems, such as the sludge treatment mode of each main part sewage discharge outlet, the reasonability of backwater utilization and the addition of alkali liquor in the process of adjusting the pH value, and further optimization and adjustment are still needed.
Disclosure of Invention
For solving the technical problem that exists, the utility model provides a desulfurization waste water softens system for power plant, simple structure improves the regulation efficiency and the precision of pH value equalizing basin, and four main part mud are unified compression simultaneously and are handled, and the waste water after handling flows back to the sedimentation tank and retreats, saves the process, reduces the running cost.
In order to achieve the above purpose, the utility model adopts the technical proposal that:
a desulfurization waste water softening system for a power plant comprises a sedimentation tank, a pH value adjusting tank, an electric flocculation-filtering device, a soft water tank and a sludge compression device, wherein a water outlet at the bottom of the sedimentation tank is connected with a waste water lifting pump, one side of the outside of the pH value adjusting tank is provided with an alkaline liquid tank, the alkaline liquid tank is provided with a dosing pump I and a dosing pump II, the dosing pump I is communicated with the pH value adjusting tank through a pipeline mixer, the dosing pump II is communicated with the pH value adjusting tank, a water outlet of the pH value adjusting tank is communicated with the electric flocculation-filtering device through a pipeline, a water outlet of the electric flocculation-filtering device is communicated with the soft water tank through a pipeline, sewage discharge ports of the sedimentation tank, the pH value adjusting tank, the electric flocculation-filtering device and the soft water tank are respectively connected with the sludge compression device through sludge pipelines, and the compressed water outlet of the sludge is communicated with the sedimentation tank through a pipeline, the compressed sludge is transported away for treatment.
And a plurality of stirrers are arranged on the inner wall of the pH value adjusting tank in a staggered manner.
The utility model discloses the process part of pH value equalizing basin interpolation alkali lye has increased by the process of alkali lye case direct to the interpolation alkali lye in the pond, and when the pH value of the mixed liquid of waste water and alkali lye that gets into the pond by the line mixer does not transfer to suitable standard, only need open the switch of the dosing pump of direct addition alkali lye and the accurate measurement dosage, realizes the function of accurate adjustment pH value, and is more convenient and fast; the sludge flowing out of the sewage discharge port of the sedimentation tank, the pH value adjusting tank, the electric flocculation-filtration device and the soft water tank uniformly enters the sludge compression device to be compressed, the cost of a plurality of sludge compression devices is saved, the produced water flows back to the sedimentation tank through the pipeline to be reprocessed, the soft water obtained by the soft water tank meets the requirements, the waste of water resources is avoided, the process is simple, the operation and maintenance cost is lower, the soft water treatment effect is better, and the device is suitable for large-scale popularization and application.
Drawings
Fig. 1 is a schematic view of the present invention.
Detailed Description
The invention is described in detail below with reference to the following figures and specific embodiments:
as shown in figure 1, this a desulfurization waste water softens system for power plant includes sedimentation tank 1, pH value equalizing basin 2, electric flocculation-filter equipment 3, soft water tank 4 and mud compressor arrangement 5, waste water elevator pump 6 is connected to 1 bottom delivery port of sedimentation tank, outside one side of pH value equalizing basin 2 sets up lye tank 7, lye tank 7 sets up with medicine pump 71 and medicine pump two 72, medicine pump 71 passes through pipe mixer 8 and pH value equalizing basin 2 intercommunication with the pipeline of waste water elevator pump 6, medicine pump two 72 and pH value equalizing basin 2 intercommunication, the delivery port of pH value equalizing basin 2 passes through pipeline and electric flocculation-filter equipment 3 intercommunication, the delivery port of electric flocculation-filter equipment 3 passes through pipeline and soft water tank 4 intercommunication, sedimentation tank 1, pH value equalizing basin 2, electric flocculation-filter equipment 3, The sewage outlet of the soft water tank 4 is respectively connected with the sludge compression device 5 through a sludge pipeline, the outlet water of the sludge compression is communicated with the sedimentation tank 1 through a pipeline, and the compressed sludge 51 is transported away for treatment.
As preferred mode, in this embodiment, crisscross a plurality of blenders that set up on the inner wall of pH value equalizing basin 2, reinforcing stirring efficiency, the mixed liquid can be better mixes, improves the accurate rate of pH value regulation.
In the operation process of the utility model, the desulfurization waste water enters the bottom of the sedimentation tank 1 through the pipeline 11, preliminary static sedimentation of the desulfurization waste water is realized under the condition of ensuring constant liquid level, and the sludge flows into the sludge compression device 5 through the sewage outlet; the upper clear water flows out from the side of the sedimentation tank 1 and is input into the pipeline mixer 8 through the wastewater lifting pump 6, meanwhile, the dosing pump I71 of the alkaline liquid tank 7 is started, alkaline liquid is input into the pipeline mixer 8 according to preset input measurement, two liquids are fully mixed in the pipeline mixer 8 and then enter the pH value adjusting tank 2, a plurality of staggered stirrers on the inner wall of the pH value adjusting tank 2 enable mixed liquid to be mixed more uniformly, a pH value meter obtains a numerical value at any time, when the liquid level in the tank is not suitable for most of desulfurization wastewater and the numerical value still does not reach the standard, the dosing pump II 72 is started, the input dosage is adjusted according to actual conditions, the dosing is slowly carried out in the tank, and the pH value is adjusted to a suitable range to stop. The adjusted wastewater enters the electric flocculation-filtration device 3 to be filtered to obtain soft water, the soft water enters the soft water pool 4, sludge generated in the process flows into the sludge compression device 5 through a pipeline of a sewage discharge outlet to be compressed uniformly, the obtained compressed sludge 51 is transported away to be treated, and return water generated in the process enters the sedimentation tank 1 through the return water pipeline 52 to be softened again. Because the sludge compression device 5 is used for uniformly treating four parts mainly generating sludge, the water obtained by compression is also mixed water of the four parts and does not meet the requirement of soft water, and now the cost of the operation process of sludge compression is reduced, a small amount of generated return water can only return to a sedimentation tank for re-softening.
Of course, the above description is not intended to limit the present invention, and the present invention is not limited to the above examples, and the changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present invention should also belong to the protection scope of the present invention.
Claims (2)
1. The utility model provides a desulfurization waste water softens system for power plant, its characterized in that includes sedimentation tank (1), pH value equalizing basin (2), electric flocculation-filter equipment (3), soft pond (4) and mud compressor arrangement (5), waste water elevator pump (6) is connected to sedimentation tank (1) bottom delivery port, outside one side of pH value equalizing basin (2) sets up lye tank (7), lye tank (7) set up with medicine pump (71) and medicine pump (72), medicine pump (71) and the pipeline of waste water elevator pump (6) pass through pipeline mixer (8) and pH value equalizing basin (2) intercommunication, medicine pump (72) and pH value equalizing basin (2) intercommunication, the delivery port of pH value equalizing basin (2) passes through the pipeline and communicates with electric flocculation-filter equipment (3), the delivery port of electric flocculation-filter equipment (3) passes through pipeline and soft pond (4) intercommunication, the sewage discharge outlets of the sedimentation tank (1), the pH value adjusting tank (2), the electric flocculation-filtration device (3) and the soft water tank (4) are respectively connected with the sludge compression device (5) through sludge pipelines, the compressed sludge is communicated with the sedimentation tank (1) through a pipeline, and the compressed sludge (51) is transported away for treatment.
2. The desulfurization waste water softening system for power plant according to claim 1, characterized in that a plurality of stirrers are staggered on the inner wall of the pH value adjusting tank (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020610829.4U CN211999244U (en) | 2020-04-22 | 2020-04-22 | Desulfurization wastewater softening system for power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020610829.4U CN211999244U (en) | 2020-04-22 | 2020-04-22 | Desulfurization wastewater softening system for power plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211999244U true CN211999244U (en) | 2020-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020610829.4U Expired - Fee Related CN211999244U (en) | 2020-04-22 | 2020-04-22 | Desulfurization wastewater softening system for power plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211999244U (en) |
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2020
- 2020-04-22 CN CN202020610829.4U patent/CN211999244U/en not_active Expired - Fee Related
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20201124 Termination date: 20210422 |
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| CF01 | Termination of patent right due to non-payment of annual fee |