CN102108003B - Sludge dewatering additive - Google Patents
Sludge dewatering additive Download PDFInfo
- Publication number
- CN102108003B CN102108003B CN201110058921XA CN201110058921A CN102108003B CN 102108003 B CN102108003 B CN 102108003B CN 201110058921X A CN201110058921X A CN 201110058921XA CN 201110058921 A CN201110058921 A CN 201110058921A CN 102108003 B CN102108003 B CN 102108003B
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- CN
- China
- Prior art keywords
- sludge
- water
- sludge dewatering
- dewatering additive
- mud
- 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 - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/20—Fertilizers of biological origin, e.g. guano or fertilizers made from animal corpses
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Treatment Of Sludge (AREA)
Abstract
The invention discloses a sludge dewatering additive. The sludge dewatering additive comprises raw materials with the weight ratios as follows: 20 to 70 parts of magnesium chloride, 30 to 80 parts of modified dolomite, 0 to 5 parts of calcium chloride, and 8 to 10 parts of heavy calcium carbonate. The sludge dewatering additive disclosed by the invention destroys cell water in sludge, so that after a large number of moisture contained in the cell water of the sludge is lost and the sludge is filter-pressed and then placed in a natural environment, the moisture in the cell water of the sludge can continuously evaporates; and after the sludge is naturally desiccated for 36 hours, the water content in the sludge can be reduced to around 10 percent, thereby providing a very good basis for reutilization of the sludge. Meanwhile, by using the sludge dewatering additive disclosed by the invention, heavy metal in the sludge can be solidified in the sludge, cannot be absorbed by plant roots, and cannot be diffused into soil and water. Therefore, the sludge dewatered by using the sludge dewatering additive disclosed by the invention cannot cause secondary pollution, and when the dewatered sludge is used as raw material of fertilizer, fuel or building material, secondary pollution cannot be caused.
Description
Technical field
The present invention relates to sludge treatment, is a kind of sludge dewatering additive.
Background technology
To containing extremely complicated heterogeneous body such as organic relic, bacterium thalline, inorganic particle, colloid in the mud that produces after domestic water and the Industrial Wastewater Treatment; Because the water cut of mud is up to 85%; So very easily corruption is fouled, its transportation such as deposits at equal serious environment pollution.Because the dehydration of mud is an extremely difficult technology that realizes, so landfill method is all adopted at first to the processing of mud in countries in the world, but along with finding after the technical progress that the mud landfill is not had final decontamination, and water resources and farm crop are produced serious harm.After getting into the eighties, just the processing to mud has had bigger improvement.At present, reasonable several kinds of method for sludge treatment are: 1. that mud is fried, moisture content is removed after, the raw material of solids being done fuel uses; The deficiency of this method is: invest a sludge treatment production line, need more than 8,000 ten thousand yuans, and running cost is high, in 10 year life-span of equipment in the technology, one ton of mud of every processing needs 500,000 yuans, and running cost is about about 180 yuan; 2. many countries dries mud with generating stone generating tail gas, and solids is done the raw material of fuel, and the deficiency of this method is: investment is big, the running cost height, and one ton of mud of every processing needs ten thousand yuans of 10-12, and running cost is about about 200 yuan; 3. with making into fertilizer after the sludge fermentation, its deficiency is: heavy metals such as the mercury in the mud, zinc are prone to be absorbed through root system of plant, and the heavy metal content of grain and vegetables is exceeded standard, and HUMAN HEALTH is produced harm.
Summary of the invention
The purpose of this invention is to provide a kind of sludge dewatering additive, it can destroy the cellular water of mud, can make mud through press filtration after again natural air drying to moisture very low.
The present invention realizes through following technical scheme for realizing above-mentioned purpose: a kind of sludge dewatering additive comprises the raw material of following weight ratio: magnesium chloride 20-70, modification dolomite 30-80, calcium chloride 0-5.
The present inventionDescribed a kind of sludge dewatering additive, the raw material of its weight ratio also adds water-ground limestone 8-10.
A kind of sludge dewatering additive of the present invention, the raw material of its weight ratio is: magnesium chloride 30-50, modification dolomite 40-60, calcium chloride 3-5, water-ground limestone 8-10.
A kind of sludge dewatering additive of the present invention, the raw material of its weight ratio is: magnesium chloride 30-50, modification dolomite 40-55.
A kind of sludge dewatering additive of the present invention, the raw material of its weight ratio is: magnesium chloride 50, modification dolomite 50.
Described a kind of sludge dewatering additive, the raw material of its weight ratio is: magnesium chloride 40-50, modification dolomite 40-50, calcium chloride 2-5, water-ground limestone 8-10.
The invention has the advantages that: it has solved the most difficult characteristics of dewatering of mud, adopts pressure filter press filtration mud after 30-55 minute with mud mixing afterreaction, and the water cut of mud is reduced to below 45%; Pass through natural air drying again; Sludge moisture content is reduced to about 10-15%, because sludge dewatering additive of the present invention has destroyed the cellular water in the mud, so after contained large quantity of moisture is scattered and disappeared in the mud cellular water; Mud is placed on physical environment after by press filtration again; Moisture wherein can also constantly be evaporated, and natural mummification is after 36 hours, and the water cut in the mud can be reduced to about 10%; For utilizing again of mud provides fabulous basis.Simultaneously; Sludge dewatering additive of the present invention can make the heavy metal in the mud be cured in the mud, can not absorbed by root system of plant, also can not be spread in soil and the water; So; Mud with after the sludge dewatering additive dehydration of the present invention does not produce secondary pollution, when the mud after the dehydration can be done the raw material of fertilizer material, fuel feedstocks or material of construction, does not produce secondary pollution.
Modification dolomite according to the invention is meant through the rhombspar after light-burned, also claims light dolomite, or claims caustic dolomite, is meant that the rhombspar raw material forms through calcining down about 1000 ℃.Have stronger clinging power, coagulation force through light-burned rhombspar, can solidification sludge in heavy metal, it is not scattered in water, produces secondary pollution.Modification dolomite and magnesium chloride can promote the rhombspar molecule to immerse in the cell walls of mud, thereby reach the purpose that makes sludge dewatering.In the sludge dewatering additive, increase chlorination, water-ground limestone, can further promote the rhombspar molecule to immerse in the cell walls of mud.The present invention the results showed: add sludge dewatering additive of the present invention after treatment in the mud, natural air drying to water cut is about 10% sludge cake again, and sludge cake is crushed to specific surface area 80-200m
2Behind/the kg, insert to soak after 90 days in the water and observe, do not have any cracking phenomena.This test shows that heavy metal is covered by in the mud, is not run off by water-dispersion, can not produce secondary pollution.
Description of drawings
Accompanying drawing 1 is the plate-and-frame filter press structural representation sketch that uses in the technology of the present invention; Accompanying drawing 2 is structure for amplifying synoptic diagram of one group of sheet frame in the accompanying drawing 1; Accompanying drawing 3 is that A-A analyses and observe the structure for amplifying synoptic diagram in the accompanying drawing 1; Accompanying drawing 4 is I portion structure for amplifying synoptic diagram in the accompanying drawing 1.
Embodiment
Embodiment
The weight ratio material component of sludge dewatering additive of the present invention can have following various combination:
1, magnesium chloride 20kg, modification dolomite 80kg.
2, magnesium chloride 35kg, modification dolomite 65kg.
3, magnesium chloride 70kg, modification dolomite 30kg.
4, magnesium chloride 30kg, modification dolomite 70kg.
5, magnesium chloride 40kg, modification dolomite 60kg.
6, magnesium chloride 50kg, modification dolomite 50kg.
7, magnesium chloride 60kg, modification dolomite 40kg.
8, magnesium chloride 55kg, modification dolomite 45kg.
9, magnesium chloride 45kg, modification dolomite 55kg.
10, magnesium chloride 20kg, modification dolomite 75kg, calcium chloride 5kg.
11, magnesium chloride 65kg, modification dolomite 30kg, calcium chloride 5kg.
12, magnesium chloride 50kg, modification dolomite 46kg, calcium chloride 4kg.
13, magnesium chloride 42kg, modification dolomite 55kg, calcium chloride 3kg.
14, magnesium chloride 36kg, modification dolomite 62kg, calcium chloride 2kg.
15, magnesium chloride 20kg, modification dolomite 79kg, calcium chloride 1kg.
16, magnesium chloride 69kg, modification dolomite 30kg, calcium chloride 1kg.
17, magnesium chloride 20kg, modification dolomite 80kg, calcium chloride 0kg.
18, magnesium chloride 70kg, modification dolomite 30kg, calcium chloride 0kg.
19, magnesium chloride 40kg, modification dolomite 50kg, calcium chloride 2kg, water-ground limestone 8kg.
20, magnesium chloride 50kg, modification dolomite 40kg, calcium chloride 2kg, water-ground limestone 8kg.
21, magnesium chloride 30kg, modification dolomite 55kg, calcium chloride 5kg, water-ground limestone 10kg.
22, magnesium chloride 30kg, modification dolomite 60kg, calcium chloride 2kg, water-ground limestone 8kg.
23, magnesium chloride 35kg, modification dolomite 53kg, calcium chloride 3kg, water-ground limestone 9kg.
24, magnesium chloride 45kg, modification dolomite 41kg, calcium chloride 4kg, water-ground limestone 10kg.
25, magnesium chloride 46kg, modification dolomite 40kg, calcium chloride 4kg, water-ground limestone 10kg.
26, magnesium chloride 47kg, modification dolomite 43kg, calcium chloride 2kg, water-ground limestone 8kg.
27, magnesium chloride 48kg, modification dolomite 42kg, calcium chloride 2kg, water-ground limestone 8kg.
Sludge dewatering additive according to the invention mixes at normal temperatures to be processed.
Sludge dewatering additive of the present invention in use, with the weight ratio of mud be 100:3-10, that is: 100kg mud; The 3-10kg water-removal additive is inserted in the mud, stir, reacted 30-50 minute; And then sludge pump gone in the sheet frame pressure filter through after press filtration, the squeezing; Sludge moisture content is reduced to below 40%, passed through natural air drying again 36 hours, make sludge moisture content reduce to 10%.Sludge dewatering additive of the present invention is blended in the plate-and-frame filter press structure used when carrying out press filtration, press dewatering in the mud shown in Fig. 1-4; The feed valve on filter frame structure and feed-pipe, other structure is all identical with known plate-and-frame filter press structure.Because sludge dewatering additive of the present invention is used for sludge dewatering; And need reach below the dehydration to 45%, therefore, at first in mud, add the sludge dewatering additive; Destroy the cellular water in the mud; Make large quantity of moisture contained in the cellular water scatter and disappear out,, and then after the squeezing water cut in the mud is reduced to below 45% again through the improved plate-and-frame filter press press filtration of the present invention.Plate-and-frame filter press of the present invention is improved on known plate-and-frame filter press structure; Only changed the structure of filter frame and feed valve has been installed on feed-pipe; That is: between two filter frames of every group, spring has been installed; Specify as follows: every group of filter frame is made up of first filter frame 6 and second filter frame 7, mounting spring 8 between first filter frame 6 and second filter frame 7, spring 8 be distributed on filter frame around.The connection of filter frame and filter membrane 14, filter frame and filter plate be connected and other all structures of plate-and-frame filter press all identical with known plate-and-frame filter press structure.
Plate-and-frame filter press of the present invention comprises a housing 1, setting pressure cylinder 2 in the housing 1, and pressure cylinder 2 is connected with pressing plate 4 through axle 3; Polylith filter plate 9 is installed between pressing plate 4 and retaining plate 5; Filter membrane 14 is set on the filter plate 9, and through hole 15 is offered at filter plate 9 middle parts, and the periphery of filter plate 9 is installed filter frame; Mounting spring 8 between filter frame, spring 8 be distributed on filter frame around.The feed-pipe 11 of plate-and-frame filter press gets in the pressure filter cavitys through the through hole on the housing 1 10, and charging valve 12 is installed on the feed-pipe 11, mud pump into through feed-pipe 11 carry out press filtration in the pressure filter, squeeze to sludge moisture content below 40%.
13 is blind holes among the figure.
Claims (3)
1. sludge dewatering additive, it is characterized in that: the raw material of its weight ratio is: magnesium chloride 30-50, modification dolomite 40-60, calcium chloride 3-5, water-ground limestone 8-10.
2. a kind of sludge dewatering additive according to claim 1, it is characterized in that: described raw material is: magnesium chloride 30-50, modification dolomite 40-55.
3. a kind of sludge dewatering additive according to claim 1, it is characterized in that: the raw material of its weight ratio is: magnesium chloride 50, modification dolomite 50.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110058921XA CN102108003B (en) | 2011-01-26 | 2011-03-11 | Sludge dewatering additive |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110027747.2 | 2011-01-26 | ||
| CN201110027747 | 2011-01-26 | ||
| CN201110058921XA CN102108003B (en) | 2011-01-26 | 2011-03-11 | Sludge dewatering additive |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102108003A CN102108003A (en) | 2011-06-29 |
| CN102108003B true CN102108003B (en) | 2012-12-26 |
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ID=44172298
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100589205A Expired - Fee Related CN102167489B (en) | 2011-01-26 | 2011-03-11 | Sludge treatment process |
| CN201110058921XA Expired - Fee Related CN102108003B (en) | 2011-01-26 | 2011-03-11 | Sludge dewatering additive |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100589205A Expired - Fee Related CN102167489B (en) | 2011-01-26 | 2011-03-11 | Sludge treatment process |
Country Status (1)
| Country | Link |
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| CN (2) | CN102167489B (en) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102503053B (en) * | 2011-10-28 | 2013-08-28 | 北京建筑材料科学研究总院有限公司 | Early-strength sludge modifier for landfill treatment and application thereof |
| CN103183540B (en) * | 2011-12-31 | 2014-12-17 | 中粮集团有限公司 | Biological organic fertilizer and preparation method thereof |
| CN103183539B (en) * | 2011-12-31 | 2014-09-17 | 中粮集团有限公司 | Dehydrating agent, preparation method thereof, organic fertilizer and preparation method thereof |
| CN102674657A (en) * | 2012-06-11 | 2012-09-19 | 安徽国祯环保节能科技股份有限公司 | Sludge dewatering method for urban sewage plant |
| CN103739179A (en) * | 2013-06-24 | 2014-04-23 | 四川海普流体技术有限公司 | Sludge pre-treatment method |
| CN103497791B (en) * | 2013-09-18 | 2016-01-20 | 煤炭科学技术研究院有限公司 | A kind of Novel sludge coal-water slurry and preparation method thereof |
| CN103708881B (en) * | 2013-12-11 | 2015-09-09 | 山西农业大学 | A kind of active sludge fertilizer |
| CN103664387B (en) * | 2013-12-11 | 2015-08-05 | 徐茂航 | A kind of agricultural wastes and active sludge prepare the method for flowers matrix |
| CN103626596B (en) * | 2013-12-11 | 2015-06-10 | 徐茂航 | Method for preparing fertilizer from activated sludge |
| US10138334B2 (en) | 2015-06-16 | 2018-11-27 | Water Mark Technologies, Inc. | Dry water soluble polymer particles |
| CN106893617A (en) * | 2015-12-18 | 2017-06-27 | 远东科技大学 | Organic sludge and waste edible oil conformability processing method, derivative fuel, feed additive |
| CN109320050A (en) * | 2018-12-11 | 2019-02-12 | 北京舞鹤环境工程设计有限公司 | A kind of conditioner and preparation method and application suitable for municipal sludge recycling |
| CN109970309A (en) * | 2019-02-25 | 2019-07-05 | 江苏大湖环境工程有限公司 | A kind of sludge drier |
| CN111661993A (en) * | 2019-03-06 | 2020-09-15 | 上海助瀛环保科技有限公司 | Sludge curing agent and preparation method and use method thereof |
| CN110776224A (en) * | 2019-11-19 | 2020-02-11 | 大连海事大学 | Treatment method of oil field oil-containing sludge |
| CN111875160B (en) * | 2020-07-18 | 2022-08-05 | 厦门东江环保科技有限公司 | Organic wastewater treatment system |
| CN112358162A (en) * | 2020-12-29 | 2021-02-12 | 山东颖慧园环保科技有限公司 | Additive for sludge dewatering and sludge dewatering method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1191847A (en) * | 1997-12-19 | 1998-09-02 | 李建熙 | Magnesium calcium-base coagulant and its production process |
| CN1962495A (en) * | 2006-11-15 | 2007-05-16 | 广州普得环保设备有限公司 | Additive for sludge deep dehydration |
| CN101417204A (en) * | 2008-10-30 | 2009-04-29 | 中国科学院青海盐湖研究所 | Water removing method in dehydration tail-gas during preparing anhydrous magnesium chloride |
-
2011
- 2011-03-11 CN CN2011100589205A patent/CN102167489B/en not_active Expired - Fee Related
- 2011-03-11 CN CN201110058921XA patent/CN102108003B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1191847A (en) * | 1997-12-19 | 1998-09-02 | 李建熙 | Magnesium calcium-base coagulant and its production process |
| CN1962495A (en) * | 2006-11-15 | 2007-05-16 | 广州普得环保设备有限公司 | Additive for sludge deep dehydration |
| CN101417204A (en) * | 2008-10-30 | 2009-04-29 | 中国科学院青海盐湖研究所 | Water removing method in dehydration tail-gas during preparing anhydrous magnesium chloride |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102167489B (en) | 2012-11-28 |
| CN102108003A (en) | 2011-06-29 |
| CN102167489A (en) | 2011-08-31 |
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Granted publication date: 20121226 Termination date: 20140311 |