CN101941787A - Drying treatment method of river and lake sludge - Google Patents
Drying treatment method of river and lake sludge Download PDFInfo
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- CN101941787A CN101941787A CN 201010298776 CN201010298776A CN101941787A CN 101941787 A CN101941787 A CN 101941787A CN 201010298776 CN201010298776 CN 201010298776 CN 201010298776 A CN201010298776 A CN 201010298776A CN 101941787 A CN101941787 A CN 101941787A
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Abstract
The invention relates to a drying treatment method of river and lake sludge. The method comprises the following steps: (1) diluting river and lake sludge to obtain diluted slurry with the mud content of no more than 13.5%, adding 0.1-0.15 part of inorganic flocculant and 3-4 parts of organic flocculant in 100 parts of diluted slurry, stirring for 10-15 seconds under the stirring rate of 200-250rpm to ensure that the flocculation of diluted slurry is performed 1-2 minutes after the stirring step, discharging supernatant; and (2) performing suction filtering to lower slurry obtained by the step (1) for preliminary dewatering, paving the lower slurry (a) layer by layer in a drying bed, laying two layers of filter cloth (b) between each two layers of the slurry (a), spraying super absorbent polymer (c) between the two layers of filter cloth (b), and standing for 40-60 hours to obtain dry mud, wherein the weight ratio of mud in dry mud to super absorbent polymer is 100:0.3-0.5. The method of the invention is simple and economical and can effectively solve the fast drying problem of river and lake sludge.
Description
Technical field
The present invention relates to a kind of mud drying method for treating, especially a kind of drying method for treating of river and lake silt belongs to the sludge treatment field.
Background technology
Along with the accelerated development of urban industry, a large amount of pollution substances enters city river, lake, and is deposited on lakebed, river bed formation mud year by year.What sludge treatment was now adopted is to concentrate desilting mostly, the settling tank dewatering and coagulating, and this method time ratio is veryer long, generally needs 3 ~ 4 months time, and the harmful element in the silt slurry permeates the ground, and causes secondary pollution.
Existing mud drying and other treatment means concentrate in the improvement of device mostly, a kind of storage silt pipe bag that is used for sludge dewatering is disclosed as Chinese invention patent CN101774745A, CN101614006A has announced that silt consolidation is with drain board and filter cloth and drain board core, also the someone adopts local dewatered process, solve long-distance pipe and carried mud, as Chinese invention patent CN1792900A, seldom about the improvement of drying method for treating aspect.
Summary of the invention
The objective of the invention is to overcome the deficiencies in the prior art, but the river and lake silt drying method for treating that in a kind of short period of time mud is dewatered is provided.
According to technical scheme provided by the invention, described river and lake silt drying method for treating may further comprise the steps:
(1) river and lake silt is diluted to the dilution mud of mud containing rate≤13.5%, in 100 parts of dilution mud, add 0.1 ~ 0.15 part inorganic flocculating agent and 3 ~ 4 parts organic floculant, under 200 ~ 250 rev/mins stirring velocity, stirred 10 ~ 15 seconds, stir back dilution in 1 ~ 2 minute mud and flocculate, supernatant liquor is discharged;
(2) lower floor's mud that step (1) is obtained is after the suction filtration preliminary hydro-extraction, lower floor's mud place Min layers is located in the mummifying pool, lays two-layer filter cloth between every layer of mud, hydroscopic high-molecular resin is spilt in the shop between two-layer filter cloth, after leaving standstill 40 ~ 60 hours, obtain mummification mud; The weight ratio of mud and hydroscopic high-molecular resin is 100:0.3 ~ 0.5 in the described mummifying pool.
Described inorganic flocculating agent is a polymerize aluminum chloride.
Described organic floculant is a polyacrylamide.
Described hydroscopic high-molecular resin is a polyacrylic acid, and polyacrylic water absorbent rate is 200 ~ 400.
The mud containing rate of described mummification mud is 55% ~ 65%.
The mass percentage concentration of described inorganic flocculating agent is 10% ~ 20%.The mass percentage concentration of described organic floculant is 0.1% ~ 0.2%.
Described filter cloth is 150 ~ 300g/m
2Non-woven fabrics.
Advantage of the present invention: efficiently solve the quick mummification problem of river and lake silt, need not precipitation solidification process for a long time, also need not to spend high energy consumption and carry out the short-term mummification, the harmful element in the mud no longer permeates the ground, and it is smelly to turn black, and avoids causing secondary pollution; Economic benefit and social ecological benefits are remarkable; Simply, economic, easy going.
Description of drawings
Fig. 1 is the synoptic diagram of arranging of mud, filter cloth, hydroscopic high-molecular resin in the mummifying pool of the present invention.
Embodiment
The invention will be further described below in conjunction with concrete drawings and Examples.
The polyacrylic water absorbent rate of indication is meant the gram number of the pure distilled water that every gram polyacrylic acid is absorbed among the present invention.Polymerize aluminum chloride used in the present invention can adopt Gongyi City to open up the polymerize aluminum chloride that general water-purifying material company limited produces; Polyacrylamide used in the present invention can adopt Gongyi City to open up the cationic polyacrylamide (CPAM) that general water-purifying material company limited produces, and is applicable to electronegative, as to contain organic material suspended substance; The polyacrylic acid that polyacrylic acid used in the present invention can adopt Shandong Taihe Water Treatment Co., Ltd. to produce.
Embodiment one: a kind of river and lake silt drying method for treating may further comprise the steps:
(1) river and lake silt is diluted to the dilution mud of mud containing rate≤13.5%, in 100 parts of dilution mud, add 0.1 part of mass percentage concentration and be 20% polymerize aluminum chloride and 3 parts of mass percentage concentration and be 0.2% polyacrylamide, low whipping speed stirred 15 seconds down for 200 rev/mins, stir back 1 minute dilution mud and flocculate, supernatant liquor is discharged;
(2) lower floor's mud that step (1) is obtained is after the suction filtration preliminary hydro-extraction, lower floor's mud a place Min layers is located in the mummifying pool, lays two-layer filter cloth b between every layer of mud a, polyacrylic acid c is spilt in the shop between two-layer filter cloth b, after leaving standstill 40 hours, obtain mud containing rate and be 55% mummification mud; The weight ratio of mud and hydroscopic high-molecular resin is 100:0.3 in the described mummifying pool; Polyacrylic water absorbent rate is 200; Filter cloth is 150g/m
2Non-woven fabrics.
Embodiment two: a kind of river and lake silt drying method for treating may further comprise the steps:
(1) river and lake silt is diluted to the dilution mud of mud containing rate≤13.5%, in 100 parts of dilution mud, add 0.15 part of mass percentage concentration and be 10% polymerize aluminum chloride and 4 parts of mass percentage concentration and be 0.1% polyacrylamide, low whipping speed stirred 10 seconds down for 250 rev/mins, stir back 2 minutes dilution mud and flocculate, supernatant liquor is discharged;
(2) lower floor's mud that step (1) is obtained is after the suction filtration preliminary hydro-extraction, lower floor's mud a place Min layers is located in the mummifying pool, lays two-layer filter cloth b between every layer of mud a, polyacrylic acid c is spilt in the shop between two-layer filter cloth b, after leaving standstill 60 hours, obtain mud containing rate and be 65% mummification mud; The weight ratio of mud and hydroscopic high-molecular resin is 100:0.5 in the described mummifying pool; Polyacrylic water absorbent rate is 400; Filter cloth is 150g/m
2Non-woven fabrics.
Embodiment three: a kind of river and lake silt drying method for treating may further comprise the steps:
(1) river and lake silt is diluted to the dilution mud of mud containing rate≤13.5%, in 100 parts of dilution mud, add 0.12 part of mass percentage concentration and be 15% polymerize aluminum chloride and 3.5 parts of mass percentage concentration and be 0.15% polyacrylamide, low whipping speed stirred 12 seconds down for 225 rev/mins, stir back 1.5 minutes dilution mud and flocculate, supernatant liquor is discharged;
(2) lower floor's mud that step (1) is obtained is after the suction filtration preliminary hydro-extraction, lower floor's mud a place Min layers is located in the mummifying pool, lays two-layer filter cloth b between every layer of mud a, polyacrylic acid c is spilt in the shop between two-layer filter cloth b, after leaving standstill 50 hours, obtain mud containing rate and be 60% mummification mud; The weight ratio of mud and hydroscopic high-molecular resin is 100:0.4 in the described mummifying pool; Polyacrylic water absorbent rate is 300; Filter cloth is 200g/m
2Non-woven fabrics.
Claims (8)
1. a river and lake silt drying method for treating is characterized in that, may further comprise the steps:
(1) river and lake silt is diluted to the dilution mud of mud containing rate≤13.5%, in 100 parts of dilution mud, add 0.1 ~ 0.15 part inorganic flocculating agent and 3 ~ 4 parts organic floculant, under 200 ~ 250 rev/mins stirring velocity, stirred 10 ~ 15 seconds, stir back dilution in 1 ~ 2 minute mud and flocculate, supernatant liquor is discharged;
(2) lower floor's mud that step (1) is obtained is after the suction filtration preliminary hydro-extraction, lower floor's mud (a) place Min layers is located in the mummifying pool, lay two-layer filter cloth (b) between every layer of mud (a), hydroscopic high-molecular resin (c) is spilt in the shop between two-layer filter cloth (b), after leaving standstill 40 ~ 60 hours, obtain mummification mud; The weight ratio of mud and hydroscopic high-molecular resin is 100:0.3 ~ 0.5 in the described mummifying pool.
2. drying method for treating as claimed in claim 1 is characterized in that: described inorganic flocculating agent is a polymerize aluminum chloride.
3. drying method for treating as claimed in claim 1 is characterized in that: described organic floculant is a polyacrylamide.
4. drying method for treating as claimed in claim 1 is characterized in that: described hydroscopic high-molecular resin is a polyacrylic acid, and polyacrylic water absorbent rate is 200 ~ 400.
5. drying method for treating as claimed in claim 1 is characterized in that: the mud containing rate of described mummification mud is 55% ~ 65%.
6. drying method for treating as claimed in claim 1 is characterized in that: the mass percentage concentration of described inorganic flocculating agent is 10% ~ 20%.
7. drying method for treating as claimed in claim 1 is characterized in that: the mass percentage concentration of described organic floculant is 0.1% ~ 0.2%.
8. drying method for treating as claimed in claim 1 is characterized in that: described filter cloth is 150 ~ 300g/m
2Non-woven fabrics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102987768A CN101941787B (en) | 2010-10-04 | 2010-10-04 | Drying treatment method of river and lake sludge |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102987768A CN101941787B (en) | 2010-10-04 | 2010-10-04 | Drying treatment method of river and lake sludge |
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| Publication Number | Publication Date |
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| CN101941787A true CN101941787A (en) | 2011-01-12 |
| CN101941787B CN101941787B (en) | 2011-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102987768A Active CN101941787B (en) | 2010-10-04 | 2010-10-04 | Drying treatment method of river and lake sludge |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106746479A (en) * | 2016-12-22 | 2017-05-31 | 郑州丽福爱生物技术有限公司 | A kind of sludge dewatering agent and preparation method thereof |
| CN111423159A (en) * | 2020-03-05 | 2020-07-17 | 河海大学 | Resource utilization method for high-water-content sludge |
| CN114105552A (en) * | 2021-10-31 | 2022-03-01 | 中交隧道工程局有限公司 | High-water-content sludge curing agent and application method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI126089B (en) | 2012-12-20 | 2016-06-30 | Kemira Oyj | METHOD FOR THE PREPARATION OF MICROFIBRILLED CELLULOSE, Dehydrated |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792900A (en) * | 2005-11-21 | 2006-06-28 | 河海大学 | Urban waters mud local dewatered process |
| JP2007260572A (en) * | 2006-03-28 | 2007-10-11 | Ichiro Narita | Concentration process of surplus sludge and sludge coagulant aid |
| CN101367597A (en) * | 2008-09-17 | 2009-02-18 | 广州绿由工业弃置废物回收处理有限公司 | Flocculating agent for sludge dewatering and sludge dewatering method |
| CN101614006A (en) * | 2009-07-09 | 2009-12-30 | 宜兴市鑫泰土工材料有限公司 | Silt consolidation is with band drain and filter cloth and band drain core |
| CN101774745A (en) * | 2010-02-05 | 2010-07-14 | 河海大学 | Sludge storing pipe bag for dehydration and dehydration method |
-
2010
- 2010-10-04 CN CN2010102987768A patent/CN101941787B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1792900A (en) * | 2005-11-21 | 2006-06-28 | 河海大学 | Urban waters mud local dewatered process |
| JP2007260572A (en) * | 2006-03-28 | 2007-10-11 | Ichiro Narita | Concentration process of surplus sludge and sludge coagulant aid |
| CN101367597A (en) * | 2008-09-17 | 2009-02-18 | 广州绿由工业弃置废物回收处理有限公司 | Flocculating agent for sludge dewatering and sludge dewatering method |
| CN101614006A (en) * | 2009-07-09 | 2009-12-30 | 宜兴市鑫泰土工材料有限公司 | Silt consolidation is with band drain and filter cloth and band drain core |
| CN101774745A (en) * | 2010-02-05 | 2010-07-14 | 河海大学 | Sludge storing pipe bag for dehydration and dehydration method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106746479A (en) * | 2016-12-22 | 2017-05-31 | 郑州丽福爱生物技术有限公司 | A kind of sludge dewatering agent and preparation method thereof |
| CN111423159A (en) * | 2020-03-05 | 2020-07-17 | 河海大学 | Resource utilization method for high-water-content sludge |
| CN114105552A (en) * | 2021-10-31 | 2022-03-01 | 中交隧道工程局有限公司 | High-water-content sludge curing agent and application method thereof |
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| Publication number | Publication date |
|---|---|
| CN101941787B (en) | 2011-12-07 |
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Effective date of registration: 20180320 Address after: 214000 Jiangsu province Wuxi Taike garden net Hui host number 77 -8-3-1 Co-patentee after: Jiangsu Jiangda Environment Technology Co. Ltd. Patentee after: Jiangsu Jiangda Ecological Technology Co., Ltd. Address before: 214028 Jiangsu New District of Wuxi City Branch Park net Hui host 77-8-3-1 Patentee before: Jiangsu Jiangda Ecological Technology Co., Ltd. |