CN203513457U - Sludge drying treatment device - Google Patents
Sludge drying treatment device Download PDFInfo
- Publication number
- CN203513457U CN203513457U CN201320689137.3U CN201320689137U CN203513457U CN 203513457 U CN203513457 U CN 203513457U CN 201320689137 U CN201320689137 U CN 201320689137U CN 203513457 U CN203513457 U CN 203513457U
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- China
- Prior art keywords
- sludge
- mud
- metering
- lime
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 239000010802 sludge Substances 0.000 title claims abstract description 47
- 238000001035 drying Methods 0.000 title abstract description 9
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 99
- 235000012255 calcium oxide Nutrition 0.000 claims abstract description 54
- 239000000292 calcium oxide Substances 0.000 claims abstract description 50
- 238000002156 mixing Methods 0.000 claims abstract description 31
- 238000003825 pressing Methods 0.000 claims abstract description 20
- 238000005303 weighing Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 abstract description 7
- 239000003814 drug Substances 0.000 abstract description 6
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 229940079593 drug Drugs 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 17
- 235000011941 Tilia x europaea Nutrition 0.000 description 17
- 239000004571 lime Substances 0.000 description 17
- 238000006243 chemical reaction Methods 0.000 description 15
- 240000006909 Tilia x europaea Species 0.000 description 13
- 239000010865 sewage Substances 0.000 description 13
- 238000000034 method Methods 0.000 description 12
- 239000000203 mixture Substances 0.000 description 8
- 239000010801 sewage sludge Substances 0.000 description 5
- 241000196324 Embryophyta Species 0.000 description 4
- 240000007313 Tilia cordata Species 0.000 description 4
- FFBHFFJDDLITSX-UHFFFAOYSA-N benzyl N-[2-hydroxy-4-(3-oxomorpholin-4-yl)phenyl]carbamate Chemical compound OC1=C(NC(=O)OCC2=CC=CC=C2)C=CC(=C1)N1CCOCC1=O FFBHFFJDDLITSX-UHFFFAOYSA-N 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 3
- 239000000920 calcium hydroxide Substances 0.000 description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 3
- 238000001704 evaporation Methods 0.000 description 3
- 230000008020 evaporation Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The utility model belongs to the field of environmental protection technology, and particularly relates to a sludge drying treatment device. The technical scheme is as follows: the sludge drying treatment device comprises a sludge metering conveying device, a quicklime metering feeding device, a mixing device and a filter pressing device, wherein the sludge metering conveying device and the quicklime metering feeding device are connected with a feed port of the mixing device; a discharge port of the mixing device is connected with the filter pressing device. The device provided by the utility model has the beneficial effects that (A) the quicklime dosage is greatly reduced; (B) the sludge is really reduced; (C) the floor area of the project is small; and (D) the drug consumption in operation is low, and the operation cost is greatly reduced.
Description
Technical field
The utility model belongs to environmental technology field, is specifically related to a kind of sludge desiccation processing equipment.
Background technology
Along with progressively raising speed, municipal sewage treatment Facilities Construction day by day improves the sludge creation amount sharp increase of sewage work with sewage centralized treatment rate.According to relevant prediction, China's municipal effluent amount also had and increases substantially in next two decades, and within 2010, quantity of wastewater effluent will reach 440 * 108m
3/ d; The year two thousand twenty quantity of wastewater effluent reaches 536 * 108m
3/ d; Sludge quantity conventionally accounts for 0.3%～0.5% (volume) of sewage quantity or is about 1%～2% (quality) of sewage load.And if sewage is carried out to advanced treatment again, sludge quantity also can increase by 0.5～1 times.At present wastewater treatment in China amount and processing rate not high (4.5%), and municipal sewage plant discharges about 9,000,000 tons of mud every year, but also with annual about 10% speed increment.Lagged behind the greatly paces of China environmental protection and improvement of the severe situation that sewage sludge harmlessness is processed, have caused showing great attention to of government and relevant departments.
Country " 12 " planning, will increase day by day 4,500 ten thousand tons of sewage treatment capacity of China, centralized treatment of urban sewage rate reaches 70%, and China's sludge creation amount is also unprecedented soaring.And municipal sludge has the features such as large, unstable, the easy corruption of capacity, foul smelling, poisonous and harmful, do not process or mishandling pollutent invasion underground water, the foul gas of will causing corrodes the serious secondary pollution accidents such as atmosphere.
At present, what deeply dehydrating sludge majority adopted is lime mummification dehydration technique: this technology is applicable to reconstruction and built Sewage Plant, enter mud water ratio in 80% left and right, mud by with the abundant hybrid reaction of lime after, water ratio drops to 70% left and right, enter afterwards sludge drying bed again and carry out airing stacking, after stacking 3 days, water ratio drops to below 60%, and outward transport is disposed again afterwards.
This technology is a large amount of soils because needs take, and the sludge treatment cycle is long, and because adding lime ratio to cause mud there is no minimizing up to 30% (be the mud of 1 ton of water ratio 80% of every processing, need to add 300 kilograms of unslaked limes).Therefore, be badly in need of a set of technology that is applicable to built/reconstruction sewage work of exploitation.
Concrete manifestation:
1, Lime-Injecting amount is high: the mud of 1 ton of water ratio 80% of every processing, need to add 300 kilograms of unslaked limes.Be equivalent to process 1 ton of over dry mud and must increase by 1.5 tons of lime;
Its reaction mechanism:
Mud is evenly mixed with microlith ash, and lime occurs to react as follows with moisture contained in mud:
1kgCaO+0.32kgH2O-＞1.32kgCa(OH)2+1177kJ
According to this reaction, often adding the calcium oxide of 1 kilogram has 0.32 water to be combined into calcium hydroxide, and the heat that reaction generates can be evaporated the water of approximately 0.5 kilogram.Unslaked lime reacts with water to be produced after calcium hydroxide, can continue to occur further to react with other materials in mud, as reacting of resultant calcium hydroxide and CO2:
1.32kgCa(OH)2+0.78kgCO2-＞1.78kgCaCO3+0.32kgH2O+2212kJ
This reaction meeting further increases total amount, a part of water of heating evaporation of solids, and then increases the solid content of processing rear mud.
2, mud increment rather than decrement: take that to process 1 ton of over dry mud be example, before processing, water ratio is 80%, its volume V1=5 ton, after processing, water ratio is 60%, because having increased by 1.5 tons of unslaked limes, therefore its volume V2=6.25 ton, the mud weight ratio after processing has increased by 1.25 tons before processing;
3, project is taken up an area large: the mud after the hybrid reaction of lime and mud, its moisture percentage in sewage sludge, generally all in 70% left and right, does not also reach the index below 60% that national standard requires.The airing therefore mud after treatment all need to be banked up in a specific region, bank up approximately 3 days airing time, so floor space is too large.Because lime mummification method is generally based on reconstruction and built Sewage Plant, in most Sewage Plant, generally can not reserve too many project land used, so this technique is restricted always.
4, operation medicine consumption is high: approximately 500 yuan/ton of unslaked lime market prices, and moving medicine consumption is 750 yuan/ton (in over dry mud);
Utility model content
The purpose of this utility model is to provide a kind of place, economical operation, the sludge desiccation processing equipment that mummification is effective.
In order to achieve the above object, the technical scheme that the utility model adopts is:
Sludge desiccation processing equipment, comprises mud metering and conveying device, Quick lime metering throwing device, mixing device, filter-pressing device; Described mud metering and conveying device, Quick lime metering throwing device are connected with the dog-house of mixing device, and the discharge port of described mixing device is connected with filter-pressing device.
This device also comprises unslaked lime storing and conveying device, dewatered sludge e Foerderanlage; Described unslaked lime storing and conveying device is connected with Quick lime metering throwing device, and described filter-pressing device is connected with dewatered sludge e Foerderanlage.
Described mud metering and conveying device is the worm conveyor of weighing, described mixing device is continuous discharge formula colter mixer, described Quick lime metering throwing device is the screw feeder with accurate measuring device, described filter-pressing device is belt filter press, and described belt filter press has the low pressure area that pressure is 5MP, the middle nip of 10MP and the high pressure area of 15MP.
Described unslaked lime storing and conveying device comprises feed bin and unslaked lime conveying belt, and described dewatered sludge e Foerderanlage is endless belt conveyor.
Adopting technical solutions of the utility model to carry out sludge drying processing comprises the following steps:
A) mud of pre-mummification is delivered to mixing device after metering by mud metering and conveying device, unslaked lime is delivered to mixing device after Quick lime metering throwing device is weighed simultaneously;
B) mud and unslaked lime mix in mixing device, obtain mixture;
C) by step b) mixture that obtains adds filter-pressing device press filtration, both completed sludge drying treating processes;
Described sludge moisture content is 70%～85%, and described mud is 1: 0.1～0.2 with Lime Quality ratio;
The pressure of described press filtration is 5MP～15MP.
Described mud metering and conveying device is the worm conveyor of weighing, described mixing device is continuous discharge formula colter mixer, described Quick lime metering throwing device is the screw feeder with accurate measuring device, described filter-pressing device is belt filter press, and described belt filter press has the low pressure area that pressure is 5MP, the middle nip of 10MP and the high pressure area of 15MP.
Described water content is that after 70%～85% the treated processing of mud, water content is less than 60%.
Described sludge moisture content is 80%, and mud is 1: 0.15 with Lime Quality ratio described in described unslaked lime.
Technical solutions of the utility model principle is:
First be that mud and unslaked lime enter mixing device, the fluidized-bed that mixing effect forms just impels the moisture generation thermopositive reaction in unslaked lime and mud.The follow-up mud constantly dropping into can enter in the fluidized-bed being preheated, and just the product with reaction meets in intake zone, unslaked lime contacts with the mud of bigger serface rapidly, reaction, heat release, guarantee the fastest mixing and react, the heat generating is high efficiency by the air heating in mixing device, accelerate the evaporation of moisture, the material after hybrid reaction is discharged in bottom.
Then the mixture after high efficient mixed enters filter-pressing device again.Can be different according to sludge quality, be divided into 3 nips, low pressure area pressure 5MPa, high pressure area pressure 10MPa, high pressure area pressure 15MPa; By the progressively extruding of three sections, the moisture percentage in sewage sludge after processing can reach below 60%, meets national sludge treatment index of correlation.
The beneficial effects of the utility model are:
A, unslaked lime dosage greatly reduce: lime mummification method is the heat that utilizes unslaked lime to be combined with mud to produce, and by the mud process of evaporate to dryness progressively, so Lime-Injecting amount is high.This technique only adds a small amount of lime, and the mud of 1 ton of water ratio 80% of every processing, need to add 30 kilograms of unslaked limes.Be equivalent to process 1 ton of over dry mud and must increase by 0.15 ton of lime;
The minimizing of B, the real meaning of mud: take that to process 1 ton of over dry mud be example, before processing, water ratio is 80%, its mass M 1=5 ton; After processing, water ratio is 60%, and because having increased by 0.15 ton of unslaked lime, therefore its mass M 2=2.875 ton, the mud weight ratio after processing has reduced 2.125 tons before processing;
C, project are taken up an area little: the mud after the hybrid reaction of lime and mud, directly enter extraordinary pressure filter and carry out extrusion process, moisture percentage in sewage sludge after processing directly drops to below 60%, only needs the floor space of 1 equipment, and floor space is much smaller than lime mummification method.
D, operation medicine consumption are low: approximately 500 yuan/ton of unslaked lime market prices, and moving medicine consumption is 75 yuan/ton (in over dry mud), and operation medicine consumes 10% of lime mummification method only, and working cost reduces greatly.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model sludge desiccation processing equipment.
Embodiment
Below in conjunction with accompanying drawing dialogue utility model technical scheme, further illustrate.
Embodiment 1
As shown in Figure 1:
Sludge desiccation processing equipment, comprises mud metering and conveying device 1, Quick lime metering throwing device 2, mixing device 3, filter-pressing device 4; Described mud metering and conveying device 1, Quick lime metering throwing device 2 are connected with the dog-house of mixing device 3, and the discharge port of described mixing device 3 is connected with filter-pressing device 4.
This device also comprises unslaked lime storing and conveying device 5, dewatered sludge e Foerderanlage 6; Described unslaked lime storing and conveying device 5 is connected with Quick lime metering throwing device 2, and described filter-pressing device 4 is connected with dewatered sludge e Foerderanlage 6.
Described mud metering and conveying device 1 is the worm conveyor of weighing, described mixing device 3 is continuous discharge formula colter mixer, described Quick lime metering throwing device 2 is the screw feeder with accurate measuring device, described filter-pressing device 4 is belt filter press, and described belt filter press has the low pressure area that pressure is 5MP, the middle nip of 10MP and the high pressure area of 15MP.
Described unslaked lime storing and conveying device 5 comprises feed bin and unslaked lime conveying belt, and described dewatered sludge e Foerderanlage 6 is endless belt conveyor.
Another object of the present utility model is to provide a kind of described sludge desiccation processing equipment to carry out sludge drying processing method.
Embodiment 2
The utility model sludge drying treatment technology scheme comprises the following steps:
A) mud of pre-mummification is delivered to mixing device 3 after metering by mud metering and conveying device 1, unslaked lime is delivered to mixing device 3 after Quick lime metering throwing device 2 is weighed simultaneously;
B) mud and unslaked lime mix in mixing device 3, obtain mixture;
C) by step b) mixture that obtains adds filter-pressing device 4 press filtrations, both completed sludge drying treating processes;
Described sludge moisture content is 70%～85%, and described mud is 1: 0.1～0.2 with Lime Quality ratio;
The pressure of described press filtration is 5MP～15MP.
Described mud metering and conveying device 1 is the worm conveyor of weighing, described mixing device 3 is continuous discharge formula colter mixer, described Quick lime metering throwing device 2 is the screw feeder with accurate measuring device, described filter-pressing device 4 is belt filter press, and described belt filter press has the low pressure area that pressure is 5MP, the middle nip of 10MP and the high pressure area of 15MP.
Described water content is that after 70%～85% the treated processing of mud, water content is less than 60%.
Described sludge moisture content is preferably 80%, and mud is preferably 1: 0.15 with Lime Quality ratio described in described unslaked lime;
Technical solutions of the utility model principle is:
First be that mud and unslaked lime enter mixing device, the fluidized-bed that mixing effect forms just impels the moisture generation thermopositive reaction in unslaked lime and mud.The follow-up mud constantly dropping into can enter in the fluidized-bed being preheated, and just the product with reaction meets in intake zone, unslaked lime contacts with the mud of bigger serface rapidly, reaction, heat release, guarantee the fastest mixing and react, the heat generating is high efficiency by the air heating in mixing device, accelerate the evaporation of moisture, the material after hybrid reaction is discharged in bottom.
Then the mixture after high efficient mixed enters filter-pressing device again.Can be different according to sludge quality, be divided into 3 nips, low pressure area pressure 5MPa, high pressure area pressure 10MPa, high pressure area pressure 15MPa; By the progressively extruding of three sections, the moisture percentage in sewage sludge after processing can reach below 60%, meets national sludge treatment index of correlation.
Claims (4)
1. sludge desiccation processing equipment, is characterized in that: comprise mud metering and conveying device, Quick lime metering throwing device, mixing device, filter-pressing device; Described mud metering and conveying device, Quick lime metering throwing device are connected with the dog-house of mixing device, and the discharge port of described mixing device is connected with filter-pressing device.
2. sludge desiccation processing equipment as claimed in claim 1, is characterized in that: this device also comprises unslaked lime storing and conveying device, dewatered sludge e Foerderanlage; Described unslaked lime storing and conveying device is connected with Quick lime metering throwing device, and described filter-pressing device is connected with dewatered sludge e Foerderanlage.
3. sludge desiccation processing equipment as claimed in claim 1, it is characterized in that: described mud metering and conveying device is the worm conveyor of weighing, described mixing device is continuous discharge formula colter mixer, described Quick lime metering throwing device is the screw feeder with accurate measuring device, described filter-pressing device is belt filter press, and described belt filter press has the low pressure area that pressure is 5MP, the middle nip of 10MP and the high pressure area of 15MP.
4. sludge desiccation processing equipment as claimed in claim 2, is characterized in that: described unslaked lime storing and conveying device comprises feed bin and unslaked lime conveying belt, and described dewatered sludge e Foerderanlage is endless belt conveyor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320689137.3U CN203513457U (en) | 2013-10-30 | 2013-10-30 | Sludge drying treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320689137.3U CN203513457U (en) | 2013-10-30 | 2013-10-30 | Sludge drying treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203513457U true CN203513457U (en) | 2014-04-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320689137.3U Expired - Lifetime CN203513457U (en) | 2013-10-30 | 2013-10-30 | Sludge drying treatment device |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104591515A (en) * | 2013-10-30 | 2015-05-06 | 杭州楚天科技有限公司 | Sludge drying treatment method and treatment apparatus thereof |
| CN106477834A (en) * | 2016-11-23 | 2017-03-08 | 上海市政工程设计研究总院（集团）有限公司 | A kind of processing equipment for the old mud soil remediation of simple landfill and its technique |
| CN113816572A (en) * | 2021-09-18 | 2021-12-21 | 南昌大学 | Method for quickly dehydrating and curing foundation pit sludge |
-
2013
- 2013-10-30 CN CN201320689137.3U patent/CN203513457U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104591515A (en) * | 2013-10-30 | 2015-05-06 | 杭州楚天科技有限公司 | Sludge drying treatment method and treatment apparatus thereof |
| CN106477834A (en) * | 2016-11-23 | 2017-03-08 | 上海市政工程设计研究总院（集团）有限公司 | A kind of processing equipment for the old mud soil remediation of simple landfill and its technique |
| CN106477834B (en) * | 2016-11-23 | 2024-06-14 | 上海市政工程设计研究总院（集团）有限公司 | Treatment equipment and technology for repairing simple landfill old sludge soil |
| CN113816572A (en) * | 2021-09-18 | 2021-12-21 | 南昌大学 | Method for quickly dehydrating and curing foundation pit sludge |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 310015 Room 601, Building 5, 108 Xiangyuan Road, Gongshu District, Hangzhou City, Zhejiang Province Patentee after: Hangzhou Chuhuan Science and Technology Co.,Ltd. Address before: 310015 Hangzhou Chutian Technology Co., Ltd. Hangzhou 406 rooms, 12 blocks, 28 Xiangyuan Road, Gongshu District, Hangzhou City, Zhejiang Province Patentee before: HANGZHOU CHUTIAN SCIENCE AND TECHNOLOGY CO.,LTD. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |