CN101798166A - Device and method for magnetic separation of underwater sludge - Google Patents
Device and method for magnetic separation of underwater sludge Download PDFInfo
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- CN101798166A CN101798166A CN 201010156152 CN201010156152A CN101798166A CN 101798166 A CN101798166 A CN 101798166A CN 201010156152 CN201010156152 CN 201010156152 CN 201010156152 A CN201010156152 A CN 201010156152A CN 101798166 A CN101798166 A CN 101798166A
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Abstract
The invention relates to a device and a method for magnetic separation of underwater sludge. The device comprises a roller screen, a magnetic separator, a reaction tank and a sludge separation tower which are connected in series by pipelines, wherein a water outlet of the previous stage treatment device is connected with an inlet of the next stage treatment device, and a sludge outlet of the sludge separation tower is connected to an inlet of the magnetic separator. The device has the characteristics of small floor area, low energy consumption, non-clogging continuous operation, large sludge yielding quantity and the like, has good removability and can be conveniently arranged at a sludge treatment site; the device not only reduces the natural drying time of a sludge stock dump and improves the sludge treatment efficiency, but also greatly reduces the desilting cost; and during an actual operation, the output quantity of sludge cakes is large, the yielding water of the separation tower completely reaches a primary standard in discharge indexes (GB18918-2002).
Description
Technical field
The present invention relates to the environmental protection equipment field, especially the treatment unit of sludge underwater and method.
Background technology
Lake water pollution in recent years, the pollution substance accumulation in the bed mud settling is serious, and nitrogen, phosphorus, organic equal size are higher relatively, thereby for the general outburst of blue-green algae and lake provides necessary nutritive element, so particularly important to the removing of bottom mud in lake.The bottom mud in lake water content is big, adopts sludge drying technique can alleviate the transport pressure of subsequent disposal greatly, improves desilting efficiency data, reduces the desilting cost.But magnetic separating apparatus has tiny flocs unit and discharges with water in sepn process, and water outlet all can not directly be discharged usually, has limited its direct application at the sludge treatment scene.
Summary of the invention
The shortcoming that the applicant can not directly discharge at the magnetic separating apparatus water outlet of above-mentioned existing processing sludge underwater, a kind of magnetic separating and treating apparatus and method of sludge underwater are provided, consume energy low, take up an area of little, operational safety, can handle continuously, have mobility preferably simultaneously, be easily installed in the sludge treatment scene.
The technical solution adopted in the present invention is as follows:
A kind of magnetic separating and treating apparatus of sludge underwater, comprise the roller grizzly, magnetic separating apparatus, retort and the mud knockout tower that are connected in series by pipeline, wherein the water outlet of upper level treatment unit is connected with the inlet of next stage treatment unit, and the mud mouth of mud knockout tower is connected to the inlet of magnetic separating apparatus.It is further characterized in that:
Described magnetic separating apparatus comprises flocculation water tank, magnetic separating device and magnetic kind separating and reclaiming device.
Adopt the magnetic method for separating and processing of the sludge underwater that above-mentioned treatment unit carries out, sewage carried out tertiary treatment:
The first step, the mud pre-treatment;
The second stage adopts magnetic separating apparatus to carry out mud-water separation;
The third stage carries out secondary treatment to described magnetic separating apparatus water outlet.It is further characterized in that:
Secondary treatment method is to adopt mud knockout tower separated sludge and water outlet in the described third stage, and the mud after knockout tower concentrates is back to magnetic separating apparatus and carries out circular treatment;
In the muddy water that enters described magnetic separating apparatus and described mud knockout tower, add flocculation agent;
Described flocculation agent main component is polymerize aluminum chloride and polyacrylamide;
It is 20～120ppm that described polymerize aluminum chloride adds concentration; It is 6～40ppm that described polyacrylamide adds concentration;
In entering the muddy water of described magnetic separating apparatus, also add the magnetic kind;
Described magnetic kind is an iron powder;
It is 1000～4000ppm that described magnetic kind is added concentration.
The present invention has characteristics such as floor space is little, energy consumption is low, working continuously does not have obstruction, and mud volume is big, and mobility is good, can be arranged at the sludge treatment scene easily.Not only reduced the mud stockyard nature required time of mummification, improved sludge treating efficiency, the cost of desilting simultaneously also reduces greatly.When actual job, mud cake output quantity is big, and the knockout tower water outlet reaches the primary standard in the discharge index (GB18918-2002) fully.
Description of drawings
Fig. 1 is the treatment unit connection diagram of sludge underwater of the present invention;
Fig. 2 is a roller grizzly vertical view of the present invention;
Fig. 3 is the vertical view of magnetic separating apparatus of the present invention;
Fig. 4 is the front view of Fig. 3;
Fig. 5 is a mud knockout tower front view of the present invention;
Fig. 6 is the magnetic method for separating and processing detail flowchart of sludge underwater of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described.
As shown in Figure 1, the treatment unit of sludge underwater of the present invention comprises roller grizzly 1, flocculation water tank 2, magnetic separating device 3, the retort 4 and mud knockout tower 5 that is connected in series by spiral pump 6, wherein the water outlet of upper level treatment unit is connected with the inlet of next stage treatment unit, and the mud mouth 503 of knockout tower 5 is connected to the inlet 301 of magnetic separating apparatus by spiral pump 6.
Actual workflow is referring to Fig. 1 to Fig. 6: contain dirt water by slush pump from 101 suction that enter the mouth, drop on the screen cloth 105 of rolling, as shown in Figure 2, screen cloth 105 bottoms have supporting network 104 to support, can back and forth have enough to meet the need around the cylinder 106 of both sides, muddy water flow to the water outlet 102 of bottom by the mesh of screen cloth 105, and big solid impurity in the muddy water such as rubbish, rubble can not pass through mesh, the rotation of following screen cloth 105 is transported to terminal slag notch 103, has realized the initial gross separation of big solid impurity in the muddy water.
The water outlet 102 effusive muddy water of roller grizzly 1 by spiral pump 6 from entering magnetic separating apparatus water-in 301, as Fig. 3, shown in Figure 4, magnetic separating apparatus comprises flocculation water tank 2, magnetic separating device 3 and magnetic kind separating and reclaiming device 7, whole plant is the commercial goods, below briefly introduce its principle of work: the water inlet of water-in 301 inputs to flocculation water tank 203, add magnetic kind and the flocculation agent of importing from the molten medicine-chest 202 of flocculation agent simultaneously, mix uniformly under the stirring of the stir shaft 204 that the agitator motor 205 that is provided with at flocculation water tank 203 tops drives from molten medicine-chest 201 inputs of magnetic kind.Flocculation agent makes impurity generation throwing out in sewage, be " coagulating nuclear " with the magnetic kind simultaneously, makes non magnetic suspended substance and magnetic kind be condensed into the magnetic floc sedimentation fast.Muddy water enters flashing groove 304, and shunting enters field regions then, and field regions is provided with a plurality of parallel circular magnetic disc 305, and motor 313 drives disk spindle 306 rotations by chain 312, drives disk 305 slowly rotation in the pond; Disk 305 is a permanent magnet, under magneticaction with muddy water in the magnetic floc sedimentation be adsorbed on disk 305 sides; Simultaneously, drive dreg scraper 307 by chain 311 and rotate, the magnetic floc sedimentation that disk 305 sides are adsorbed scrapes to sieve plate 310.The water that flows through field regions is collected to drainage strumbox 308 by water outlet 302, and the magnetic floc sedimentation on the sieve plate 310 is collected to mud collection box 309.The mud of mud collection box 309 is delivered to magnetic kind separating and reclaiming device 7 by mud mouth 303, isolates the magnetic kind by the magnetic drum magnetic separation, and the backing up of magnetic kind is to the molten medicine-chest 201 of magnetic kind, and the mud after filtering is made as mud cake, carries out subsequent transportation.
Flocculation agent main component of the present invention is PAC (polymerize aluminum chloride) and PAM (polyacrylamide), PAC is an inorganic flocculating agent, its effect is when dosage reaches a certain threshold value, its hydrolysate precipitation is rapidly separated out, micelle in the water and fine suspension can be caught as nucleus or absorption net when forming by these throw outs, become tiny flco; PAM is an organic polymer coargulator, and it is water miscible long-chain compound, ionizablely when hydrolysis goes out a large amount of dissociable groups, and by electrical neutralization, bridge formation adsorption, thereby net is caught the effect that tiny flco plays flocculation.During actual the interpolation, add PAC earlier, add PAM again and can obtain flocculating effect preferably.Magnetic kind of the present invention is mainly 400 purpose iron powders, and its effect is as " coagulating nuclear " non magnetic suspended substance to be combined fast to be condensed into the magnetic floc sedimentation with the magnetic kind.Table 1 by in entering magnetic separating device 3 and the muddy water that enters mud knockout tower 5 the content data table of interpolation PAC, PAM and magnetic kind.
Table 1: flocculation agent composition and ratio
| PAC content (ppm) | PAM content (ppm) | Magnetic (ppm) | |
| Enter the muddy water of magnetic separating apparatus | ??50-120 | ??8-40 | ??1000-4000 |
| Enter the muddy water of mud knockout tower | ??20-50 | ??6-10 | ??- |
The present invention adopts the water outlet of 5 pairs of magnetic separating apparatus of mud knockout tower to carry out flocculation sediment, effectively solved the problem that the magnetic separating apparatus draining can not directly be discharged, utilize flocculation sediment gravity separation principle, under the effect of efficient flocculant, rapid flocculation, effluent quality touches the mark fully, fails through the mud extraction of flocculation and gets back to magnetic separating apparatus circulation separation, does not have secondary pollution; Actual water quality correlation data is referring to table 2.Can certainly adopt settling tank to finish flocculation sediment, but mud knockout tower 5 floor spaces used in the present invention are little, movability is good, does not need fixed venue to build settling tank and the special-purpose mud equipment of scraping of outfit.
Table 2 magnetic separating apparatus Inlet and outlet water water quality synopsis
| The sample title | Chemical oxygen demand | Total nitrogen | Total phosphorus | The total solids suspended substance | Colourity |
| Original sewage | ??132 | ??37.5 | ??3.43 | ??14150 | ??76000 |
| The magnetic separating apparatus water outlet | ??57.3 | ??16.3 | ??0.955 | ??36 | ??62 |
| The knockout tower water outlet | ??20.4 | ??8.94 | ??0.022 | ??6 | ??13 |
The treatment process of sludge underwater of the present invention adopts tertiary sewage treatment:
The first step, the mud pre-treatment: contain dirt hydromining collection and select for use roller grizzly to filter out big solid impurity and rubbish, equipment is simple, and energy consumption is low;
The second stage, adopt magnetic separating apparatus to carry out mud-water separation: take up an area of for a short time, can work continuously, treatment capacity is big, and long service life is easy to maintenance;
The third stage, secondary treatment is carried out in the magnetic separating apparatus water outlet: adopt mud knockout tower separated sludge and water outlet, water outlet water is clear, fully can qualified discharge; Mud after knockout tower concentrates is back to magnetic separating apparatus, and circular treatment does not have secondary pollution.
More than describing is explanation of the invention, it or not qualification to invention, institute of the present invention restricted portion is referring to claim, under the situation of spirit of the present invention, the present invention can do any type of modification, for example can build settling tank and replace knockout tower, can reach the purpose of secondary treatment magnetic separating apparatus water outlet equally; Perhaps adopt other flocculation agents such as biological flocculant.
Claims (10)
1. the magnetic separating and treating apparatus of a sludge underwater, it is characterized in that: comprise the roller grizzly, magnetic separating apparatus, retort and the mud knockout tower that are connected in series by pipeline, wherein the water outlet of upper level treatment unit is connected with the inlet of next stage treatment unit, and the mud mouth of mud knockout tower is connected to the inlet of magnetic separating apparatus.
2. the magnetic separating and treating apparatus of sludge underwater as claimed in claim 1 is characterized in that: described magnetic separating apparatus comprises flocculation water tank, magnetic separating device and magnetic kind separating and reclaiming device.
3. adopt the magnetic method for separating and processing of the sludge underwater that the described treatment unit of claim 1 carries out, it is characterized in that, sewage is carried out tertiary treatment:
The first step, the mud pre-treatment;
The second stage adopts magnetic separating apparatus to carry out mud-water separation;
The third stage carries out secondary treatment to described magnetic separating apparatus water outlet.
4. the treatment process of sludge underwater as claimed in claim 3 is characterized in that: secondary treatment method is to adopt mud knockout tower separated sludge and water outlet in the described third stage, and the mud after knockout tower concentrates is back to magnetic separating apparatus and carries out circular treatment.
5. the treatment process of sludge underwater as claimed in claim 3 is characterized in that: add flocculation agent in the muddy water that enters described magnetic separating apparatus and described mud knockout tower.
6. the treatment process of sludge underwater as claimed in claim 5, it is characterized in that: described flocculation agent main component is polymerize aluminum chloride and polyacrylamide.
7. the treatment process of sludge underwater as claimed in claim 6 is characterized in that: it is 20～120ppm that described polymerize aluminum chloride adds concentration; It is 6～40ppm that described polyacrylamide adds concentration.
8. the treatment process of sludge underwater as claimed in claim 3 is characterized in that: also add the magnetic kind in entering the muddy water of described magnetic separating apparatus.
9. the treatment process of sludge underwater as claimed in claim 8, it is characterized in that: described magnetic kind is an iron powder.
10. the treatment process of sludge underwater as claimed in claim 8 is characterized in that: it is 1000～4000ppm that described magnetic kind is added concentration.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010101561522A CN101798166B (en) | 2010-04-21 | 2010-04-21 | Device and method for magnetic separation of underwater sludge |
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| CN2010101561522A CN101798166B (en) | 2010-04-21 | 2010-04-21 | Device and method for magnetic separation of underwater sludge |
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| CN101798166A true CN101798166A (en) | 2010-08-11 |
| CN101798166B CN101798166B (en) | 2011-12-28 |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086052A (en) * | 2010-11-29 | 2011-06-08 | 李泽 | Drum-type sewage treatment method and device |
| CN102603108A (en) * | 2012-03-27 | 2012-07-25 | 郑州爱沃特环保科技有限公司 | Circulating water treatment system of wet-type spray booth and treatment method |
| CN102951763A (en) * | 2012-11-26 | 2013-03-06 | 四川环能德美科技股份有限公司 | Method for utilizing pre-depositing magnetic separation combined technology to treat municipal wastewater |
| CN103145224A (en) * | 2013-03-29 | 2013-06-12 | 成都源蓉科技有限公司 | Magnetic force residue removing component |
| CN103466760A (en) * | 2013-09-27 | 2013-12-25 | 上海原青环保工程有限公司 | Electromagnetic type muddy water separating tower and electromagnetic type muddy water separating method |
| CN103755114A (en) * | 2014-02-21 | 2014-04-30 | 烟台大学 | Concentrating and phosphorus removing method for excess sludge |
| CN103771682A (en) * | 2014-01-15 | 2014-05-07 | 广州华晟环保科技开发有限公司 | High-dryness conditioning and dehydrating method for sludge |
| CN106116100A (en) * | 2016-08-25 | 2016-11-16 | 江苏康泰环保股份有限公司 | A kind of mud magnetic concentrates deep dehydration system |
| CN106145601A (en) * | 2016-08-25 | 2016-11-23 | 江苏康泰环保股份有限公司 | A kind of mud magnetic thickening system |
| WO2018032830A1 (en) * | 2016-08-16 | 2018-02-22 | 中电建水环境治理技术有限公司 | Regeneration system for residual water from treatment of contaminated bottom sludge from river or lake |
| WO2018032827A1 (en) * | 2016-08-16 | 2018-02-22 | 中电建水环境治理技术有限公司 | Waste sorting double-layered grating equipment for treatment of polluted sediment in river, lake, or estuary |
| CN108275757A (en) * | 2018-02-07 | 2018-07-13 | 沈阳建筑大学 | A kind of magnetic flocculation and magnetic flocculation agent reclaiming clean combination unit |
Citations (2)
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| CN1911823A (en) * | 2005-08-12 | 2007-02-14 | 四川德美环境技术有限责任公司 | Magnetic flocculation separation waste water treatment technology |
| CN101691263A (en) * | 2009-09-27 | 2010-04-07 | 中国船舶重工集团公司第七〇二研究所 | Magnetically-adsorptive algae-laden water separation method and separation device thereof |
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2010
- 2010-04-21 CN CN2010101561522A patent/CN101798166B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1911823A (en) * | 2005-08-12 | 2007-02-14 | 四川德美环境技术有限责任公司 | Magnetic flocculation separation waste water treatment technology |
| CN101691263A (en) * | 2009-09-27 | 2010-04-07 | 中国船舶重工集团公司第七〇二研究所 | Magnetically-adsorptive algae-laden water separation method and separation device thereof |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102086052A (en) * | 2010-11-29 | 2011-06-08 | 李泽 | Drum-type sewage treatment method and device |
| CN102603108A (en) * | 2012-03-27 | 2012-07-25 | 郑州爱沃特环保科技有限公司 | Circulating water treatment system of wet-type spray booth and treatment method |
| CN102951763A (en) * | 2012-11-26 | 2013-03-06 | 四川环能德美科技股份有限公司 | Method for utilizing pre-depositing magnetic separation combined technology to treat municipal wastewater |
| CN103145224B (en) * | 2013-03-29 | 2014-04-30 | 成都源蓉科技有限公司 | Magnetic force residue removing component |
| CN103145224A (en) * | 2013-03-29 | 2013-06-12 | 成都源蓉科技有限公司 | Magnetic force residue removing component |
| CN103466760B (en) * | 2013-09-27 | 2015-12-23 | 上海原青环保工程有限公司 | Electromagnetic type mud-water separation tower and electromagnetic type mud-water separation method |
| CN103466760A (en) * | 2013-09-27 | 2013-12-25 | 上海原青环保工程有限公司 | Electromagnetic type muddy water separating tower and electromagnetic type muddy water separating method |
| CN103771682A (en) * | 2014-01-15 | 2014-05-07 | 广州华晟环保科技开发有限公司 | High-dryness conditioning and dehydrating method for sludge |
| CN103771682B (en) * | 2014-01-15 | 2015-09-16 | 广州华晟环保科技开发有限公司 | A kind of method of sludge high-drying degree conditioning dehydration |
| CN103755114A (en) * | 2014-02-21 | 2014-04-30 | 烟台大学 | Concentrating and phosphorus removing method for excess sludge |
| WO2018032830A1 (en) * | 2016-08-16 | 2018-02-22 | 中电建水环境治理技术有限公司 | Regeneration system for residual water from treatment of contaminated bottom sludge from river or lake |
| WO2018032827A1 (en) * | 2016-08-16 | 2018-02-22 | 中电建水环境治理技术有限公司 | Waste sorting double-layered grating equipment for treatment of polluted sediment in river, lake, or estuary |
| CN106116100A (en) * | 2016-08-25 | 2016-11-16 | 江苏康泰环保股份有限公司 | A kind of mud magnetic concentrates deep dehydration system |
| CN106145601A (en) * | 2016-08-25 | 2016-11-23 | 江苏康泰环保股份有限公司 | A kind of mud magnetic thickening system |
| CN108275757A (en) * | 2018-02-07 | 2018-07-13 | 沈阳建筑大学 | A kind of magnetic flocculation and magnetic flocculation agent reclaiming clean combination unit |
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| CN101798166B (en) | 2011-12-28 |
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Granted publication date: 20111228 Termination date: 20190421 |