CN107344746B - Sedimentation tank for treating high-concentration heavy metal industrial sewage - Google Patents
Sedimentation tank for treating high-concentration heavy metal industrial sewage Download PDFInfo
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- CN107344746B CN107344746B CN201710635981.0A CN201710635981A CN107344746B CN 107344746 B CN107344746 B CN 107344746B CN 201710635981 A CN201710635981 A CN 201710635981A CN 107344746 B CN107344746 B CN 107344746B
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- lifting
- sedimentation tank
- plate
- mud
- heavy metal
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/01—Separation of suspended solid particles from liquids by sedimentation using flocculating agents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/02—Settling tanks with single outlets for the separated liquid
- B01D21/04—Settling tanks with single outlets for the separated liquid with moving scrapers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D21/00—Separation of suspended solid particles from liquids by sedimentation
- B01D21/18—Construction of the scrapers or the driving mechanisms for settling tanks
- B01D21/183—Construction of the scrapers or the driving mechanisms for settling tanks with multiple scraping mechanisms
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/50—Treatment of water, waste water, or sewage by addition or application of a germicide or by oligodynamic treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention discloses a sedimentation tank for treating high-concentration heavy metal industrial sewage, which comprises a sedimentation tank and a mud scraper arranged on the sedimentation tank, wherein the mud scraper comprises a track, a travelling device, a lifting mechanism and a mud scraper, and the travelling device comprises travelling wheels and a connecting bridge; the mud scraping plate comprises a mud scraping front plate and a mud scraping rear plate, the mud scraping front plate and the mud scraping rear plate can be connected in an up-down moving way, and the lifting mechanism comprises a first lifting oil cylinder, a second lifting oil cylinder, a front fixing rod, a rear fixing rod and a lifting bridge; the first lifting cylinder one end is connected to the connecting bridge other end and is connected to the lifting bridge, and preceding dead lever one end is connected to the lifting bridge other end and is connected to scrape mud front bezel, is equipped with the second lifting cylinder between rear fixed lever and the lifting bridge, and the rear fixed lever lower extreme is connected to scrape mud back bezel. The invention has the advantages that: the mud scraping effect is good, the speed is high, and the sludge at the bottom of the tank is thoroughly scraped; the sludge is not easy to lift, the phenomenon of secondary floating diffusion of the sludge is avoided, the heavy metal is effectively flocculated, the secondary pollution of the heavy metal to the soil is avoided, and the service life is long.
Description
Technical Field
The invention relates to the field of sewage treatment, in particular to a sedimentation tank for treating high-concentration heavy metal industrial sewage.
Background
In a sewage treatment system, mainly comprising sedimentation, biochemistry, adsorption, neutralization and other processes, sedimentation is an essential sewage purification step for settling and separating sludge with finer particles, a sedimentation tank needs to remove the sludge in time after the sedimentation is finished, particularly a secondary sedimentation tank, otherwise, anaerobic fermentation of organic sediments is easy to occur, so that the quality of the sludge is easy to float up, bad odor is generated, and the water quality is further deteriorated, such as the rising of the solubility BOD value in effluent; lowering the pH value, etc. The sewage discharge period in the sedimentation tank is generally 2 days, and the settled sludge is scraped to a sludge discharge port by a sludge scraper and is directly discharged from the sludge discharge port.
The existing sedimentation tank has the following problems in treating high-concentration heavy metal industrial sewage: 1. the heavy metal content is high, and the sludge scraper is corrosive and easy to corrode and wear on one hand; 2. heavy metals are rich in the settled sludge, and secondary pollution is caused to the soil by directly discharging the sludge; 3. the existing sedimentation tank is not provided with an effective mud scraper, so that the mud scraping effect is poor, the mud scraper does not consider the practical characteristics of the sedimentation tank, and the scraping plate is easy to stir the settled mud during scraping due to the high water content and finer mud in the sedimentation tank, so that the secondary pollution of water quality and serious mud lifting phenomenon are caused; 4. algae are easy to grow in the sedimentation tank, and the growth of algae is unfavorable to water quality.
Disclosure of Invention
In order to solve the problems, the invention discloses a sedimentation tank for treating high-concentration heavy metal industrial sewage.
In order to achieve the above purpose, the present invention provides the following technical solutions:
the sedimentation tank for treating high-concentration heavy metal industrial sewage comprises a sedimentation tank and a mud scraper arranged on the sedimentation tank, wherein a sewage outlet is arranged at the bottom of the sedimentation tank, the mud scraper comprises a rail, a travelling device, a lifting mechanism and a mud scraper, the rail is arranged on the side wall of the top of the sedimentation tank, the travelling device is arranged on the rail, and the mud scraper further comprises an anti-lifting device; the walking device comprises a walking wheel and a connecting bridge connected with the walking wheel; the lifting mechanism comprises a lifting oil cylinder, a fixed rod and a lifting bridge; one end of the lifting oil cylinder is connected with the connecting bridge, the other end of the lifting oil cylinder is connected with the lifting bridge, one end of the fixing rod is connected with the lifting bridge, the other end of the fixing rod is connected with the mud scraping plate, and the anti-lifting device comprises an anti-lifting support column and an L-shaped anti-lifting plate; one end of the anti-lifting upright post is connected with the lifting bridge, the other end of the anti-lifting upright post is connected with the L-shaped anti-lifting plate, the anti-lifting upright post is provided with a second lifting oil cylinder, the L-shaped anti-lifting plate is formed by fixedly connecting a vertical plate and a transverse plate, one end of the vertical plate is fixedly connected to the scraper plate through a spring, the scraper plate is provided with a groove, and the spring is positioned in the groove; the medicine storage device is characterized in that a plurality of medicine storage boxes are arranged on the transverse plate at intervals, medicine outlet openings are formed in the lower ends of the medicine storage boxes, and liquid leakage openings are formed in the transverse plate.
Further, a protective sleeve is arranged outside the groove, and the protective sleeve is arranged at the upper edge of the groove. The protective sleeve is arranged at the upper edge of the groove, so that the rising sludge can be prevented from entering the groove, the spring is blocked, the elasticity of the spring is affected, the service life of the spring is prolonged, and the maintenance cost is reduced.
Further, the bottom plate of the medicine storage box and the transverse plate are the same, and the medicine outlet and the liquid leakage outlet are the same. When the bottom plate of the medicine storage box is the same as the transverse plate, the steel consumption can be reduced, and the load of the transverse plate can be lightened.
Further, a spray head is arranged at the liquid leakage port. The setting of shower nozzle makes the three-dimensional sedimentation tank that sprays of liquid medicine in, sprays the effect better.
Furthermore, an overflow port is arranged on the transverse plate, and an overflow cap is arranged on the edge above the overflow port. Because the settled sludge particles in the secondary sedimentation tank are fine, a vacuum area is easy to form at the L joint of the L-shaped anti-lifting plate, so that the scraping resistance is increased; the arrangement of the overflow port and the overflow cap can prevent the sludge from forming a vacuum area, so that the scraping is quicker and the scraping effect is better.
Further, the travelling wheels can be rubber wheels, nylon wheels and steel wheels.
As one preferable mode of the invention, two scraping plates are arranged, each scraping plate is connected with two fixing rods, two corresponding anti-lifting devices are arranged, and each anti-lifting device is connected with two anti-lifting upright posts; and 3 medicine storage boxes are arranged on each scraper in total, and the connection anti-lifting upright posts are connected. The two scrapers are arranged, so that the load of the scrapers on the fixed rod can be reduced, and the equipment is more stable; the medicine adding box can uniformly add medicines such as flocculating agent and the like into the sedimentation tank.
The working principle and the beneficial effects of the invention are as follows: the mud scraping device comprises a track, a traveling device, a lifting mechanism and a mud scraping plate, wherein the track is arranged on the side wall of the top of the sedimentation tank, and the traveling device is arranged on the track to realize the traveling of the mud scraping device on the sedimentation tank; the lifting oil cylinder realizes the up-and-down lifting of the lifting bridge and drives the mud scraping plate to lift up and down; the transverse plate of the anti-lifting device can prevent lifting, can intercept lifting sludge generated during scraping of the scraping plate, can realize lifting of the L-shaped anti-lifting plate by the second lifting oil cylinder, can adjust the height of the anti-lifting plate according to the sedimentation thickness of the sludge, and can effectively prevent the sludge from lifting; medicines such as flocculating agent are added in the medicine storage box on the transverse plate, so that heavy metals can be flocculated effectively, and chlorine water can be added to sterilize and remove algae and inhibit the growth of algae effectively.
Compared with the prior art, the invention has the following advantages:
(1) The sludge is not easy to raise in the sludge scraping process, so that secondary floating diffusion of the sludge is avoided, and secondary pollution of water quality is relieved;
(2) The lifting cylinder is adopted to realize lifting, so that a winch device is avoided, the lifting effect is good, the lifting device is firm and durable, the lifting device is not easy to wear, and the service life is long. The hoisting device used in the prior art adopts ropes to realize lifting, the ropes are easy to break, and the lifting is troublesome, the labor intensity is high, and the mechanical abrasion is high;
(3) The invention realizes the effective treatment of heavy metal, avoids the influence of heavy metal on water quality, avoids the corrosion of heavy metal on the mud scraping plate, and relieves the abrasion of the mud scraping plate; the medicine storage box is arranged on the transverse plate, so that the action speed is high, the action effect is good, and the waste of medicines is avoided. Compared with the prior art of directly spraying medicines, the spray has remarkable effect.
Drawings
FIG. 1 is a schematic structural view of embodiment 1 of the present invention;
FIG. 2, left side view of embodiment 1 of the present invention; the arrow in fig. 2 indicates the travel direction of the running gear;
fig. 3, a partial enlarged view at a in fig. 2;
wherein: sedimentation basin 100, drain 200, track 1, running gear 2, walking wheel 21, connecting bridge 22, elevating system 3, lift cylinder 31, dead lever 32, elevating bridge 33, scraper 4, anti-lifting device 5, anti-lifting support 51, L-shaped anti-lifting plate 52, second lift cylinder 53, spring 54, groove 55, protective sleeve 56, medicine storage box 6, drain port 61, shower nozzle 62, overflow port 71, overflow cap 72.
Detailed Description
The present invention is further illustrated in the following drawings and detailed description, which are to be understood as being merely illustrative of the invention and not limiting the scope of the invention.
Example 1
As shown in fig. 1, 2 and 3, a sedimentation tank for treating high-concentration heavy metal industrial sewage is provided, a mud scraper is arranged on a wall of the sedimentation tank 100, and a sewage outlet 200 is arranged at the bottom of the sedimentation tank. The mud scraper comprises a track 1, a traveling device 2, a lifting mechanism 3, a mud scraping plate 4 and an anti-lifting device 5, wherein the track is arranged on the side wall of the top of the sedimentation tank, and the traveling device is arranged on the track. The track 1 comprises two tracks arranged in parallel.
The walking device comprises a walking wheel 21 and a connecting bridge 22 for connecting the walking wheel; the lifting mechanism comprises a lifting cylinder 31, a fixed rod 32 and a lifting bridge 33; one end of the lifting cylinder is connected with the connecting bridge, the other end of the lifting cylinder is connected with the lifting bridge, one end of the fixing rod is connected with the lifting bridge, the other end of the fixing rod is connected with the mud scraping plate, and the anti-lifting device comprises an anti-lifting support column 51 and an L-shaped anti-lifting plate 52; one end of the anti-lifting upright post is connected with the lifting bridge, the other end of the anti-lifting upright post is connected with an L-shaped anti-lifting plate, a second lifting oil cylinder 53 is arranged on the anti-lifting upright post, the L-shaped anti-lifting plate is formed by fixedly connecting a vertical plate and a transverse plate, and reinforcing ribs can be arranged between the vertical plate and the transverse plate to strengthen the connection; one end of the vertical plate is fixedly connected to the scraper through a spring 54, a groove 55 is formed in the front end of the scraper, and the spring is positioned in the groove; the transverse plate is provided with a plurality of medicine storage boxes 6 at intervals, the lower ends of the medicine storage boxes are provided with medicine outlets, the transverse plate is provided with a liquid leakage port 61, and the positions of the medicine outlets and the liquid leakage port are matched.
Further, a protective sleeve 56 is arranged outside the groove, and the protective sleeve is arranged at the upper edge of the groove. The protective sleeve is arranged at the upper edge of the groove, so that the rising sludge can be prevented from entering the groove, the spring is blocked, the elasticity of the spring is affected, the service life of the spring is prolonged, and the maintenance cost is reduced.
In this embodiment, the bottom plate and the cross plate of the medicine storage box are the same, and the medicine outlet and the liquid leakage port 61 are the same. When the bottom plate of the medicine storage box is the same as the transverse plate, the steel consumption can be reduced, and the load of the transverse plate can be lightened.
In this embodiment, a nozzle 62 is provided at the liquid leakage port. The setting of shower nozzle makes the three-dimensional sedimentation tank that sprays of liquid medicine in, sprays the effect better.
In this embodiment, the cross plate is provided with an overflow port 71, and an overflow cap 72 is provided on the upper edge of the overflow port, and the overflow cap is provided with a hole. Because the settled sludge particles in the secondary sedimentation tank are fine, a vacuum area is easy to form at the L joint of the L-shaped anti-lifting plate, so that the scraping resistance is increased; the arrangement of the overflow port and the overflow cap can prevent the sludge from forming a vacuum area, so that the scraping is quicker and the scraping effect is better.
The travelling wheels can be rubber wheels, nylon wheels and steel wheels according to the requirements. The walking wheel is firm, wear-resistant and good in rolling property.
In the embodiment, two scraping plates are arranged, and each scraping plate is connected with two fixing rods; and 3 medicine storage boxes are arranged on each scraper. The two scrapers are arranged, so that the load of the scrapers on the fixed rod can be reduced, and the equipment is more stable; the medicine adding box can uniformly add medicines such as flocculating agent and the like into the sedimentation tank. Of course, the mud scraping plate can be arranged according to the actual needs
The technical means disclosed by the scheme of the invention is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (6)
1. A sedimentation tank for treating high-concentration heavy metal industrial sewage, which is characterized in that: the mud scraper comprises a sedimentation tank and a mud scraper arranged on the sedimentation tank, wherein a drain outlet is arranged at the bottom of the sedimentation tank, the mud scraper comprises a track, a travelling device, a lifting mechanism and a mud scraper, the track is arranged on the side wall of the top of the sedimentation tank, the travelling device is arranged on the track, and the mud scraper further comprises an anti-lifting device; the walking device comprises a walking wheel and a connecting bridge connected with the walking wheel; the lifting mechanism comprises a lifting oil cylinder, a fixed rod and a lifting bridge; one end of the lifting oil cylinder is connected with the connecting bridge, the other end of the lifting oil cylinder is connected with the lifting bridge, one end of the fixing rod is connected with the lifting bridge, the other end of the fixing rod is connected with the mud scraping plate, and the anti-lifting device comprises an anti-lifting support column and an L-shaped anti-lifting plate; one end of the anti-lifting support is connected with the lifting bridge, the other end of the anti-lifting support is connected with the L-shaped anti-lifting plate, the anti-lifting support is provided with a second lifting cylinder, the L-shaped anti-lifting plate is formed by fixedly connecting a vertical plate and a transverse plate, one end of the vertical plate is fixedly connected to the mud scraping plate through a spring, the mud scraping plate is provided with a groove, and the spring is positioned in the groove; the medicine storage device is characterized in that a plurality of medicine storage boxes are arranged on the transverse plate at intervals, medicine outlet openings are formed in the lower ends of the medicine storage boxes, and liquid leakage openings are formed in the transverse plate.
2. A sedimentation tank for treating high-concentration heavy metal industrial sewage as set forth in claim 1, wherein: the protective sleeve is arranged outside the groove and is arranged at the upper edge of the groove.
3. A sedimentation tank for treating high-concentration heavy metal industrial sewage as set forth in claim 1, wherein: the bottom plate of the medicine storage box and the transverse plate are the same, and the medicine outlet and the liquid leakage outlet are the same.
4. A sedimentation tank for treating high-concentration heavy metal industrial sewage as set forth in claim 3, wherein: and a spray head is arranged at the liquid leakage port.
5. A sedimentation tank for treating high-concentration heavy metal industrial sewage as set forth in claim 1, wherein: an overflow port is arranged on the transverse plate, and an overflow cap is arranged on the edge above the overflow port.
6. A sedimentation tank for treating high-concentration heavy metal industrial sewage as set forth in claim 1, wherein: the number of the scraping plates is two, and each scraping plate is connected with two fixing rods; and 3 medicine storage boxes are arranged on each scraper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710635981.0A CN107344746B (en) | 2017-07-31 | 2017-07-31 | Sedimentation tank for treating high-concentration heavy metal industrial sewage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710635981.0A CN107344746B (en) | 2017-07-31 | 2017-07-31 | Sedimentation tank for treating high-concentration heavy metal industrial sewage |
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| Publication Number | Publication Date |
|---|---|
| CN107344746A CN107344746A (en) | 2017-11-14 |
| CN107344746B true CN107344746B (en) | 2023-06-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710635981.0A Active CN107344746B (en) | 2017-07-31 | 2017-07-31 | Sedimentation tank for treating high-concentration heavy metal industrial sewage |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108394975B (en) * | 2018-03-21 | 2019-04-19 | 山西泓源达环境工程集团有限公司 | Processing system for sanitary sewage |
| CN113082791A (en) * | 2021-05-17 | 2021-07-09 | 江苏恒玮环保设备有限公司 | Double-irrigation linkage type mud scraper installation device and method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001269663A (en) * | 2000-03-24 | 2001-10-02 | Ishigaki Co Ltd | Solid recoverying device |
| FR2967587A1 (en) * | 2010-11-23 | 2012-05-25 | G T M I Groupe Tolerie Mecanique Ind | Scraper bridge useful in settling tank for treating wastewater containing sludge, comprises beam that is intended to be mounted and rotates on central column of settling tank, base blade for scrapping the tank, and guides fixed to beam |
| CN202605801U (en) * | 2012-05-16 | 2012-12-19 | 金华天乙机械制造有限公司 | Mud scraping device of periphery drive mud scraper |
| CN203790635U (en) * | 2014-02-26 | 2014-08-27 | 石家庄慕田峪环境工程有限公司 | Central transmission sludge scraper |
| CN204709888U (en) * | 2015-06-04 | 2015-10-21 | 新乡市绿丰环保工程有限公司 | A kind of high-efficient scraping suction dredge |
| CN106267924A (en) * | 2015-05-21 | 2017-01-04 | 天津市安宝利亨环保工程技术有限公司 | A kind of Novel peripheral drive sludge scraper |
| CN207227089U (en) * | 2017-07-31 | 2018-04-13 | 南京圆点环境清洁技术有限公司 | A kind of settling tank for handling high concentration heavy industries sewage |
-
2017
- 2017-07-31 CN CN201710635981.0A patent/CN107344746B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001269663A (en) * | 2000-03-24 | 2001-10-02 | Ishigaki Co Ltd | Solid recoverying device |
| FR2967587A1 (en) * | 2010-11-23 | 2012-05-25 | G T M I Groupe Tolerie Mecanique Ind | Scraper bridge useful in settling tank for treating wastewater containing sludge, comprises beam that is intended to be mounted and rotates on central column of settling tank, base blade for scrapping the tank, and guides fixed to beam |
| CN202605801U (en) * | 2012-05-16 | 2012-12-19 | 金华天乙机械制造有限公司 | Mud scraping device of periphery drive mud scraper |
| CN203790635U (en) * | 2014-02-26 | 2014-08-27 | 石家庄慕田峪环境工程有限公司 | Central transmission sludge scraper |
| CN106267924A (en) * | 2015-05-21 | 2017-01-04 | 天津市安宝利亨环保工程技术有限公司 | A kind of Novel peripheral drive sludge scraper |
| CN204709888U (en) * | 2015-06-04 | 2015-10-21 | 新乡市绿丰环保工程有限公司 | A kind of high-efficient scraping suction dredge |
| CN207227089U (en) * | 2017-07-31 | 2018-04-13 | 南京圆点环境清洁技术有限公司 | A kind of settling tank for handling high concentration heavy industries sewage |
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