CN211595254U - Steel mill sewage treatment system - Google Patents
Steel mill sewage treatment system Download PDFInfo
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- CN211595254U CN211595254U CN201920712910.0U CN201920712910U CN211595254U CN 211595254 U CN211595254 U CN 211595254U CN 201920712910 U CN201920712910 U CN 201920712910U CN 211595254 U CN211595254 U CN 211595254U
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Abstract
The utility model discloses a steel mill sewage treatment system, including sewage collecting pit, sedimentation tank, oil interceptor, dilution pool and tank, the sewage collecting pit right side is equipped with the cooling bath through the pipe connection, the cooling bath right side is equipped with the sedimentation tank through the pipe connection, the sedimentation tank right side is equipped with the secondary sedimentation tank through the pipe connection, secondary sedimentation tank bottom is the slope structure, the secondary sedimentation tank right side is through the pipe connection oil interceptor, oil interceptor right side upper portion is equipped with the collection oil pipe, the collection oil pipe opposite side is equipped with the oil storage tank, oil storage tank bottom one side is equipped with the ooff valve, the oil interceptor right side is through the pipe connection dilution pool, be provided with the pH valve detector on the dilution pool, the dilution pool right side is through the pipe connection tank. The utility model discloses have simply swiftly, with low costs, but reach cyclic utilization's beneficial effect through many times physical precipitation filtration, its mainly used steel mill's sewage treatment.
Description
Technical Field
The utility model belongs to the technical field of sewage treatment, especially, relate to a steel mill sewage treatment system.
Background
The sewage of steel mill can cause serious pollution if not discharging without being treated, and the steel mill is a place that needs a large amount of water resources, and the steel mill waste water mainly includes: the waste water produced by mining, sintering, iron-making, steel-making (continuous casting), steel rolling and other processes. Therefore, the wastewater treatment of the steel plant actually includes beneficiation wastewater treatment, sintering wastewater treatment, iron-making wastewater treatment, steel rolling wastewater treatment, and the like. The source and characteristics are as follows: the beneficiation wastewater is acidic, and the content of pollutants such as suspended matters, metal ions, beneficiation agents and the like is high; the sintering wastewater has high content of suspended matters in dedusting water and washing water, and the cooling water has high temperature; the water temperature of blast furnace gas washing water and slag flushing wastewater of the iron-making wastewater is high, and the content of suspended matters is large; the cooling water of the steel-making waste water contains a large amount of ferric oxide and a small amount of grease, and the slag flushing waste water contains a large amount of suspended matters; the steel rolling wastewater contains a large amount of ferric oxide and grease, if the sewage is not obtained in time, serious pollution is caused to the environment, and the common sewage treatment cost is high, the consumed time is long, and the sewage cannot be treated in time.
SUMMERY OF THE UTILITY MODEL
The utility model provides a but, simple swift, with low costs, but reach cyclic utilization's steel mill sewage treatment system through many times physical precipitation filtration, but aim at solving the above-mentioned sewage that exists and can not in time handle and handle sewage cost height problem.
The utility model is realized in such a way, a steel mill sewage treatment system comprises a sewage collecting tank, a sedimentation tank, an oil separation tank, a dilution tank and a water storage tank, wherein the right side of the sewage collecting tank is provided with a cooling tank through pipeline connection, a refrigerator is arranged inside the cooling tank, the bottom of the cooling tank is provided with a sludge discharge pipe, the right side of the cooling tank is provided with the sedimentation tank through pipeline connection, one side of the bottom of the sedimentation tank is provided with a sludge discharge pipe II, the right side of the sedimentation tank is provided with a secondary sedimentation tank through pipeline connection, a separation plate is arranged on the pipeline between the sedimentation tank and the secondary sedimentation tank, the separation plate is embedded and connected in the pipeline, the bottom of the secondary sedimentation tank is of an inclined structure, one side of the bottom of the secondary sedimentation tank which is inclined downwards is provided with a sludge discharge pipe III, the right side of the secondary sedimentation tank is connected with the oil separation tank through a pipeline, one side, oil interceptor right side upper portion is equipped with the oil collecting pipe, the oil collecting pipe with oil interceptor bolted connection, the oil collecting pipe opposite side is equipped with the oil storage pond, oil storage pond and oil collecting pipe bolted connection, oil storage pond bottom one side is equipped with the ooff valve, the oil interceptor right side is passed through the pipe connection and is diluted the pond, be provided with the pH valve detector on the dilution pond, dilution pond bottom one side is equipped with No. five sludge discharge pipes, dilute the pond right side and pass through the pipe connection tank, sludge discharge pipe, No. two sludge discharge pipes, No. three sludge discharge pipes, No. four sludge discharge pipes and No. five sludge discharge pipe connection sludge impoundments.
The isolating plate is evenly provided with micro small holes and is wrapped by filter cloth.
And a flow velocity regulating valve I is arranged on a pipeline connecting the cooling tank and the sedimentation tank, and the flow velocity regulating valve I controls the flow velocity not to exceed 0.1-0.3 m/s.
The inclination angle of the bottom of the secondary sedimentation tank is set to be 50-60 degrees, and the bottom of the secondary sedimentation tank is connected with the third sludge discharge pipe through bolts.
And a flow velocity regulating valve II is arranged on the pipeline connecting the sedimentation tank and the secondary sedimentation tank, and the flow velocity regulating valve II controls the flow velocity not to exceed 0.0004 m/s.
And the first sludge discharge pipe, the second sludge discharge pipe, the third sludge discharge pipe, the fourth sludge discharge pipe and the fifth sludge discharge pipe are provided with a blowing pump and a switch valve, and the sludge discharge pipes adopt large-caliber sludge suction and discharge rubber pipes.
And the pH value detector and the alarm device are fixedly connected with the diluting pool.
Compared with the prior art, the beneficial effects of the utility model are that: solve through the cooling tank and use up the too high problem of temperature behind the water, the time of the cooling temperature of shortening, then through depositing the problem of filtering to solve the suspended solid content big with have a large amount of grease many times, dilute sewage through the dilution pond at last and then leading-in tank comes the effect that realizes cyclic utilization.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the partition board of the present invention;
fig. 3 is a front view of the oil storage tank of the present invention.
In the figure: 1 sewage collecting tank, 2 sedimentation tanks, 3 oil interceptors, 4 dilution tanks, 5 water storage tanks, 6 cooling ponds, 7 secondary sedimentation tanks, 8 oil storage tanks, 9 refrigerators, 10 flow rate regulating valves I, 11 flow rate regulating valves II, 12 oil collecting pipes, 13 on-off valves, 14 blowing pumps, 15 sludge discharge pipes, 16 sludge discharge pipes, 17 sludge discharge pipes, 18 sludge discharge pipes, 19 sludge discharge pipes, 20 pH value detectors, 21 alarm devices, 22 sludge tanks, 23 pipelines, 24 isolation plates, 25 micro-pores.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.
Referring to fig. 1-3, the present invention provides a technical solution: a steel mill sewage treatment system comprises a sewage collecting tank 1, a sedimentation tank 2, an oil separation tank 3, a dilution tank 4 and a water storage tank 5, wherein the right side of the sewage collecting tank 1 is connected with a cooling tank 6 through a pipeline 23, a refrigerating machine 9 is arranged inside the cooling tank 6, the bottom of the cooling tank 6 is provided with a first sludge discharge pipe 15, the right side of the cooling tank 6 is connected with the sedimentation tank 2 through a pipeline 23, one side of the bottom of the sedimentation tank 2 is provided with a second sludge discharge pipe 16, the right side of the sedimentation tank 2 is connected with a secondary sedimentation tank 7 through a pipeline 23, a partition plate 24 is arranged on the pipeline 23 between the sedimentation tank 2 and the secondary sedimentation tank 7, the partition plate 24 is embedded and connected in the pipeline 23, the bottom of the secondary sedimentation tank 7 is of an inclined structure, one side of the bottom of the secondary sedimentation tank 7, which is inclined downwards is provided with a third sludge discharge pipe 17, the right side of the secondary sedimentation tank 7 is connected with, 3 right side upper portions of oil interceptor are equipped with oil collecting pipe 12, oil collecting pipe 12 and 3 bolted connection in oil interceptor, 12 opposite sides in oil collecting pipe are equipped with oil storage tank 8, oil storage tank 8 and 12 bolted connection in oil collecting pipe, 8 bottom one side in oil storage tank are equipped with ooff valve 13, 3 right sides in oil interceptor pass through pipeline 23 and connect dilution tank 4, be provided with pH valve detector 20 on the dilution tank 4, 4 bottom one side in dilution tank are equipped with No. five mud pipes 19, 4 right sides in dilution tank pass through pipeline 23 and connect reservoir 5, a mud pipe 15, No. two mud pipes 16, No. three mud pipes 17, No. four mud pipes 18 and No. five mud pipes 19 connect sludge impoundment 22.
In the utility model, the micro-holes are uniformly arranged on the isolation plate 24, the isolation plate 24 is wrapped by the filter cloth, the micro-holes 25 on the isolation plate 24 can ensure the water flow to pass through, and the filter cloth can filter large floating objects and sediments to realize the first filtration;
a pipeline 23 connecting the cooling tank 6 and the sedimentation tank 2 is provided with a flow velocity regulating valve I10, the flow velocity regulating valve I10 controls the flow velocity not to exceed 0.1-0.3 m/s, and the flow velocity is controlled to enable the sewage to slowly flow into the sedimentation tank 2, so that the sedimentation tank 2 can achieve sufficient sedimentation;
the inclination angle of the bottom of the secondary sedimentation tank 7 is set to be between 50 and 60 degrees, the bottom of the secondary sedimentation tank 7 is in bolted connection with the third sludge discharge pipe 17, the inclination angle can enable the activated sludge to naturally fall into the third sludge discharge pipe 17, and the bottom of the secondary sedimentation tank 7 is in bolted connection with the third sludge discharge pipe 17, so that the cleaning of the sludge discharge pipe can be facilitated;
a flow velocity regulating valve II11 is arranged on a pipeline 23 connecting the sedimentation tank 2 and the secondary sedimentation tank 7, the flow velocity regulating valve II11 controls the flow velocity not to exceed 0.0004m/s, and controls sewage to flow into the secondary sedimentation tank 7 more slowly, so that the active sludge is fully precipitated;
a blowing pump 14 and a switch valve 13 are arranged on the first sludge discharge pipe, the second sludge discharge pipe 16, the third sludge discharge pipe 17, the fourth sludge discharge pipe and the fifth sludge discharge pipe 19, the sludge discharge pipes adopt large-caliber sludge suction and discharge rubber pipes, the blowing pump 14 can prevent the sludge discharge pipes from being blocked, and the switch valve 13 can control the discharge of sludge;
the pH value detector 20 is provided with an alarm device 21, the pH value detector 20 and the alarm device 21 are fixedly connected with the diluting tank 4, and the pH value is less than or equal to 300mg/l (CaCO) under the condition of recycling3Meter), when the alkalinity is more than 300mg/l, the alarm device 21 gives an alarm to remind the operator.
The utility model discloses a theory of operation is: the used water is collected in a sewage collecting tank 1 and flows into a cooling tank 6 through a pipeline 23, then a refrigerating machine 9 starts to work, when the sewage is cooled, the flow velocity of a flow velocity control valve I10 is set to be not more than 0.1-0.3 m/s to control the sewage to slowly flow into a sedimentation tank 2, the sludge is discharged through a first sludge discharge pipe 15 and is discharged into a sludge tank 22, a separation plate 24 can prevent floating objects from entering a secondary sedimentation tank 7, the flow velocity of a flow velocity control valve II11 is set to be 0.004m/s to control the sewage to slowly flow into the secondary sedimentation tank 7 to achieve the effect of secondary sedimentation, the bottom of the secondary sedimentation tank 7 is obliquely arranged to enable active sludge to enter a second sludge discharge pipe 16 and be discharged into the sludge tank 22 by gravity, then the sewage flows into an oil separation tank 3 through the pipeline 23, grease in the water is separated by the oil separation tank 3 and is collected in an oil collecting tank 8 through an oil collecting pipe 12, the oil storage tank 8 is provided with the ooff valve 13 and can conveniently take out dirty oil, the third time of sewage is deposited to oil interceptor 3 can be realized, the precipitate is discharged into sludge impoundment 22 through No. three mud pipes 17, sewage after the third time is deposited flows into diluting tank 4 through pipeline 23, whether it is qualified to detect sewage alkalinity through pH valve detector 20, if unqualified alarm device 21 sends out the police dispatch newspaper, remind the staff to add hydrochloric acid and dilute the adjustment and reach suitable basicity (less than or equal to 300mg/l (with CaCO 3)), the produced precipitate of chemical reaction is discharged into sludge impoundment 22 through No. four mud pipes 18, sewage after the final processing flows into tank 5 and can reuse.
The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The utility model provides a steel mill sewage treatment system, includes sewage collecting pit, sedimentation tank, oil interceptor, dilution tank and tank, its characterized in that: the sewage collecting tank is provided with a cooling tank through pipeline connection, a refrigerator is arranged in the cooling tank, the bottom of the cooling tank is provided with a first sludge discharge pipe, the cooling tank is provided with a sedimentation tank through pipeline connection, one side of the bottom of the sedimentation tank is provided with a second sludge discharge pipe, the sedimentation tank is connected with a secondary sedimentation tank through a pipeline, a separation plate is arranged on the pipeline between the sedimentation tank and the secondary sedimentation tank, the separation plate is embedded and connected in the pipeline, the bottom of the secondary sedimentation tank is of an inclined structure, one side of the bottom of the secondary sedimentation tank which is inclined downwards is provided with a third sludge discharge pipe, the secondary sedimentation tank is connected with an oil separation tank through a pipeline, one side of the bottom of the oil separation tank is provided with a fourth sludge discharge pipe, the upper part of the right side of the oil separation tank is provided with an oil collecting pipe, the oil collecting pipe is connected with the oil separation tank through bolts, the other side of the oil collecting, the oil storage tank bottom one side is equipped with the ooff valve, the oil interceptor passes through the pipe connection diluting tank, be provided with the pH valve detector on the diluting tank, diluting tank bottom one side is equipped with No. five mud pipes, the diluting tank passes through the pipe connection tank, sludge impoundment is all connected to a mud pipe, No. two mud pipes, No. three mud pipes, No. four mud pipes and No. five mud pipes.
2. The steel mill sewage treatment system according to claim 1, wherein: the isolating plate is evenly provided with micro small holes and is wrapped by filter cloth.
3. The steel mill sewage treatment system according to claim 1, wherein: and a flow velocity regulating valve I is arranged on a pipeline connecting the cooling tank and the sedimentation tank, and the control flow velocity of the flow velocity regulating valve I is set to be 0.1-0.3 m/s.
4. The steel mill sewage treatment system according to claim 1, wherein: the inclination angle of the bottom of the secondary sedimentation tank is set to be 50-60 degrees, and the bottom of the secondary sedimentation tank is connected with the third sludge discharge pipe through bolts.
5. The steel mill sewage treatment system according to claim 1, wherein: and a flow velocity regulating valve II is arranged on the pipeline connecting the sedimentation tank and the secondary sedimentation tank, and the flow velocity regulating valve II controls the flow velocity not to exceed 0.0004 m/s.
6. The steel mill sewage treatment system according to claim 1, wherein: and the first sludge discharge pipe, the second sludge discharge pipe, the third sludge discharge pipe, the fourth sludge discharge pipe and the fifth sludge discharge pipe are respectively provided with a blowing pump and a switch valve, and the sludge discharge pipes adopt large-caliber sludge suction and discharge rubber pipes.
7. The steel mill sewage treatment system according to claim 1, wherein: and the pH value detector and the alarm device are fixedly connected with the diluting pool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920712910.0U CN211595254U (en) | 2019-05-17 | 2019-05-17 | Steel mill sewage treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920712910.0U CN211595254U (en) | 2019-05-17 | 2019-05-17 | Steel mill sewage treatment system |
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| CN211595254U true CN211595254U (en) | 2020-09-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920712910.0U Active CN211595254U (en) | 2019-05-17 | 2019-05-17 | Steel mill sewage treatment system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112626307A (en) * | 2020-12-09 | 2021-04-09 | 钢城集团凉山瑞海实业有限公司 | Treatment process of hot-rolled oily iron oxide mud |
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2019
- 2019-05-17 CN CN201920712910.0U patent/CN211595254U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112626307A (en) * | 2020-12-09 | 2021-04-09 | 钢城集团凉山瑞海实业有限公司 | Treatment process of hot-rolled oily iron oxide mud |
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