CN103819072B - A kind of deeply dehydrating sludge composite conditioner and application thereof - Google Patents
A kind of deeply dehydrating sludge composite conditioner and application thereof Download PDFInfo
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- CN103819072B CN103819072B CN201410069338.2A CN201410069338A CN103819072B CN 103819072 B CN103819072 B CN 103819072B CN 201410069338 A CN201410069338 A CN 201410069338A CN 103819072 B CN103819072 B CN 103819072B
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- mud
- deeply dehydrating
- dosage
- active agent
- composite conditioner
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Links
- 239000010802 sludge Substances 0.000 title claims abstract description 57
- 239000002131 composite material Substances 0.000 title claims abstract description 29
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000013543 active substance Substances 0.000 claims abstract description 26
- 238000010276 construction Methods 0.000 claims abstract description 22
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 22
- JRKICGRDRMAZLK-UHFFFAOYSA-L persulfate group Chemical group S(=O)(=O)([O-])OOS(=O)(=O)[O-] JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims abstract description 21
- 238000003756 stirring Methods 0.000 claims abstract description 21
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 230000001590 oxidative effect Effects 0.000 claims abstract description 7
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 5
- WOWHHFRSBJGXCM-UHFFFAOYSA-M cetyltrimethylammonium chloride Chemical compound [Cl-].CCCCCCCCCCCCCCCC[N+](C)(C)C WOWHHFRSBJGXCM-UHFFFAOYSA-M 0.000 claims description 5
- -1 polyoxyethylene octylphenol Polymers 0.000 claims description 5
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 4
- 239000004094 surface-active agent Substances 0.000 claims description 4
- LZZYPRNAOMGNLH-UHFFFAOYSA-M Cetrimonium bromide Chemical compound [Br-].CCCCCCCCCCCCCCCC[N+](C)(C)C LZZYPRNAOMGNLH-UHFFFAOYSA-M 0.000 claims description 3
- 241000353097 Molva molva Species 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- XJWSAJYUBXQQDR-UHFFFAOYSA-M dodecyltrimethylammonium bromide Chemical compound [Br-].CCCCCCCCCCCC[N+](C)(C)C XJWSAJYUBXQQDR-UHFFFAOYSA-M 0.000 claims description 3
- 229930182470 glycoside Natural products 0.000 claims description 3
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 claims description 2
- DDXLVDQZPFLQMZ-UHFFFAOYSA-M dodecyl(trimethyl)azanium;chloride Chemical compound [Cl-].CCCCCCCCCCCC[N+](C)(C)C DDXLVDQZPFLQMZ-UHFFFAOYSA-M 0.000 claims description 2
- 244000005700 microbiome Species 0.000 abstract description 3
- 229920000642 polymer Polymers 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 7
- 230000003750 conditioning effect Effects 0.000 description 6
- 230000018044 dehydration Effects 0.000 description 6
- 238000006297 dehydration reaction Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000001914 filtration Methods 0.000 description 3
- 239000008187 granular material Substances 0.000 description 3
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical class [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000004159 Potassium persulphate Substances 0.000 description 1
- 238000002306 biochemical method Methods 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 150000004676 glycans Chemical class 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 102000039446 nucleic acids Human genes 0.000 description 1
- 108020004707 nucleic acids Proteins 0.000 description 1
- 150000007523 nucleic acids Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 1
- 235000019394 potassium persulphate Nutrition 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The present invention relates to a kind of deeply dehydrating sludge composite conditioner and application thereof, this amendment is made up of the component of following weight part: tensio-active agent: 0.05-2.0; Ferrous salt: 2.5-10.0; Persulphate: 3.0-12; Framework construction body: 5.0-30.0; In pending mud, add tensio-active agent, stirring and evenly mixing, wherein tensio-active agent dosage is the 0.05-2.0% of mud dry weight; Continue to add ferrous salt and persulphate, stirring and evenly mixing, oxidizing reaction occurs, and wherein ferrous salt dosage is the 2.5-10.0% of mud dry weight, and persulphate dosage is the 3.0-12% of mud dry weight; In above-mentioned mud, add framework construction body, stirring and evenly mixing, wherein framework construction body dosage is the 5.0-30.0% of mud dry weight.Compared with prior art, composite conditioner of the present invention effectively can destroy Extracellular polymers and microorganism cells in mud, discharges cell interior water and EPS Bound moisture, and can reduce organic compressibility, can increase substantially dewatering performance of sludge.
Description
Technical field
The present invention relates to a kind of sludge conditioner and application thereof, especially relate to a kind of deeply dehydrating sludge composite conditioner and application thereof.
Background technology
That drops into water treatment along with China improves constantly, and stain disease treatment capacity increases year by year, and the mud generation as Biochemical method by product also constantly rises.The water ratio of usual mud, up to more than 99%, causes sludge volume huge, and mobility is strong, is difficult to shipping storage; Before the follow-up disposal carrying out mud, usually need to nurse one's health it and dewater.
Because organic content in mud is high, particle is tiny, wetting ability is strong, specific surface area is large, the characteristic of strong rubber body structure result in sludge dewatering difficulty, sludge dewatering often becomes the bottleneck problem of specific resistance to filtration technology.Sludge dewatering difficulty has much relations with the existence form of water in mud.Research shows, in mud, contained humidity is broadly divided into free water, capillary water, attached water and granule interior water.The ratio that wherein free water accounts for total moisture is approximately 70%; Capillary water accounts for 20% of total moisture; Internal water in attached water and microbe granular body, both accounts for 10% of total moisture.Free water accounts for the overwhelming majority of sludge water content, is removed easily by condensing mode or the very little mechanical force of applying; And capillary water, attached water and granule interior water three kinds of moisture because and mud granule between there is multi-form effect, be therefore not easy to remove.
Meanwhile, the extracellular polymeric on mud flco surface is another large crux of sludge dewatering difficulty.Extracellular polymeric EPS is made up of polymeric materials such as polysaccharide, protein, nucleic acid, these polymkeric substance can produce viscous force, form charged floc-matrix three-dimensional, similar gels, height aquation, the high degree of hydration effect shown and unfavorable to sludge dewatering.In addition, mud is easy compression set under the effect of high pressure, can block the hole of filter cake, block the filtration channel of water, cause current mechanical dehydration efficiency lower in the later stage of filtering.
In sum, destroy the mud flco hydrophilic structure of EPS in mud, change the existence of Bound moisture in mud, improve sludge dewatering degree, and the compressibility problem solving large amount of organic in mud is the breach of improving sludge dewatering efficiency further.
Summary of the invention
Object of the present invention be exactly in order to overcome above-mentioned prior art exist defect and a kind of deeply dehydrating sludge composite conditioner and application thereof are provided, this composite conditioner effectively can destroy Extracellular polymers and microorganism cells in mud, discharge cell interior water and EPS Bound moisture, and organic compressibility can be reduced, can dewatering performance of sludge be increased substantially.
Object of the present invention can be achieved through the following technical solutions:
A kind of deeply dehydrating sludge composite conditioner, this amendment is made up of the component of following weight part:
Tensio-active agent: 0.05-2.0;
Ferrous salt: 2.5-10.0;
Persulphate: 3.0-12;
Framework construction body: 5.0-30.0.
Described tensio-active agent is quaternary surfactant or nonionic surface active agent.
Described tensio-active agent is selected from one or more in palmityl trimethyl ammonium chloride, Dodecyl trimethyl ammonium chloride, cetyl trimethylammonium bromide, Trimethyllaurylammonium bromide, 4 bromide, polyoxyethylene octylphenol ether or alkyl glycoside.
Described ferrous salt is selected from FeSO
4, FeCl
2or Fe (NO
3)
2in one or more.
Described persulphate is selected from K
2s
2o
8, (NH
4)
2s
2o
8or Na
2s
2o
8in one or more.
Described framework construction body is Powdered, is selected from one or more in diatomite, wilkinite or rectorite leng.
An application for deeply dehydrating sludge composite conditioner, described deeply dehydrating sludge composite conditioner is used for deeply dehydrating sludge, comprises the following steps:
(1) in pending mud, add tensio-active agent, stirring and evenly mixing, wherein tensio-active agent dosage is the 0.05-2.0% of mud dry weight;
(2) continue to add ferrous salt and persulphate, stirring and evenly mixing, oxidizing reaction occurs, and wherein ferrous salt dosage is the 2.5-10.0% of mud dry weight, persulphate dosage is the 3.0-12% of mud dry weight, and the mol ratio of ferrous salt and persulphate is 1.15: 1 ~ 1.30: 1;
(3) in above-mentioned mud, add framework construction body, stirring and evenly mixing, wherein framework construction body dosage is the 5.0-30.0% of mud dry weight.
Described pending mud is active sludge or the digested sludge of water ratio more than 95%.
Compared with prior art, deeply dehydrating sludge composite conditioner of the present invention is by the synergy of tensio-active agent, ferrous salt-persulphate and framework construction body, effectively can destroy the Extracellular polymers in mud and microorganism cells, water in release Bound moisture wherein and born of the same parents, improve the degree of dehydration of mud, and the compressibility of mud can be improved, the strainability of mud can be improved.Wherein, tensio-active agent, to the solublization of EPS in mud flco, can disperse mud flco, destroys flocculation structure, and can improve the useful effect of subsequent oxidation reaction to mud flco; The advanced oxidation effect of ferrous salt-persulphate system effectively destroys EPS and sludge microbe cell, is that in Bound moisture in mud and born of the same parents, water changes into free water; Framework construction body utilizes physics amendment, forms hard grid frame in mud, even if still keep vesicular structure under High Pressure, efficiently solves organic compressibility problem in mud, improves the dewatering of mud.
Embodiment
Below in conjunction with specific embodiment, the present invention is described in detail.
Embodiment 1
A kind of deeply dehydrating sludge composite conditioner, comprise ferrous sulfate and Potassium Persulphate that mass ratio is 0.7, tensio-active agent is palmityl trimethyl ammonium chloride, and framework construction body is wilkinite (fineness is that 200 mesh screen residues are less than 15%).
The application method of this sludge-dewatering compound conditioning agent is as follows:
Get the excess sludge of certain municipal sewage plant, water ratio is 97.0%, and sludge concentration is 34.5g/L, adds as above medicament to mud, adds step and is:
Be add palmityl trimethyl ammonium chloride solution (concentration is 20%) in the excess sludge of 97.0% to water ratio, the dosage of palmityl trimethyl ammonium chloride is 0.5% of mud butt; And stir 5 minutes, tensio-active agent is fully mixed with mud;
FeSO is added to containing in the mud of tensio-active agent
4(concentration is 40%), FeSO
4dosage be 2.5% of mud butt, stir 1 minute, make FeSO
4fully mix with mud;
K is added in mud
2s
2o
8(concentration is 20%), K
2s
2o
8dosage be 3.6% of mud butt, and stir 5 minutes, make FeSO
4with K
2s
2o
8fully mix with mud, and oxidizing reaction occurs;
In mud, add the wilkinite of mud butt 25%, be uniformly mixed to evenly.
Mud after above conditioning, compared to the primary sludge do not nursed one's health, after conditioning, the resistivity of mud reduces 91.5%.
After above pretreated mud carries out filter press dehydration, the moisture content of the cake of gained is about 60%.
Embodiment 2
A kind of deeply dehydrating sludge composite conditioner, this amendment is made up of the component of following weight part:
Tensio-active agent: cetyl trimethylammonium bromide 1;
Ferrous salt: FeSO
42.5;
Persulphate: K
2s
2o
83.0;
Framework construction body: Powdered diatomite (fineness is that 200 mesh screen residues are less than 15%) 5.0;
An application for deeply dehydrating sludge composite conditioner, deeply dehydrating sludge composite conditioner is used for deeply dehydrating sludge, comprises the following steps:
(1) to water ratio be 96.5% pending mud (digested sludge) in add tensio-active agent, stirring and evenly mixing, wherein tensio-active agent dosage is 1% of mud dry weight;
(2) continue to add ferrous salt and persulphate, stirring and evenly mixing, oxidizing reaction occurs, and wherein ferrous salt dosage is 2.5% of mud dry weight, and persulphate dosage is the 3.O% of mud dry weight;
(3) in above-mentioned mud, add framework construction body, stirring and evenly mixing, wherein framework construction body dosage is 5.0% of mud dry weight.
Mud after process, compared to the primary sludge do not nursed one's health, after conditioning, the resistivity of mud reduces 90.2%.After mud after process carries out filter press dehydration, the moisture content of the cake of gained is about 65%.
Embodiment 3
A kind of deeply dehydrating sludge composite conditioner, this amendment is made up of the component of following weight part:
Tensio-active agent: alkyl glycoside 0.05;
Ferrous salt: FeCl
23.35;
Persulphate: (NH
4)
2s
2o
86;
Framework construction body: Powdered wilkinite (fineness is that 200 mesh screen residues are less than 15%) 15.0;
An application for deeply dehydrating sludge composite conditioner, deeply dehydrating sludge composite conditioner is used for deeply dehydrating sludge, comprises the following steps:
(1) to water ratio be 97.5% pending mud in add tensio-active agent, stirring and evenly mixing, wherein tensio-active agent dosage is 0.05% of mud dry weight;
(2) continue to add ferrous salt and persulphate, stirring and evenly mixing, oxidizing reaction occurs, and wherein ferrous salt dosage is 3.35% of mud dry weight, and persulphate dosage is 6% of mud dry weight;
(3) in above-mentioned mud, add framework construction body, stirring and evenly mixing, wherein framework construction body dosage is 15.0% of mud dry weight.
Mud after process, compared to the primary sludge do not nursed one's health, after conditioning, the resistivity of mud reduces 93.5%.After mud after process carries out filter press dehydration, the moisture content of the cake of gained is about 55%.
Embodiment 4
A kind of deeply dehydrating sludge composite conditioner, this amendment is made up of the component of following weight part:
Tensio-active agent: Trimethyllaurylammonium bromide 2.0;
Ferrous salt: Fe (NO
3)
29.0;
Persulphate: Na
2s
2o
812;
Framework construction body: Powdered rectorite leng (fineness is that 200 mesh screen residues are less than 15%) 30.0;
An application for deeply dehydrating sludge composite conditioner, deeply dehydrating sludge composite conditioner is used for deeply dehydrating sludge, comprises the following steps:
(1) to water ratio be 98.0% pending mud in add tensio-active agent, stirring and evenly mixing, wherein tensio-active agent dosage is 2.0% of mud dry weight;
(2) continue to add ferrous salt and persulphate, stirring and evenly mixing, oxidizing reaction occurs, and wherein ferrous salt dosage is 9.0% of mud dry weight, and persulphate dosage is 12% of mud dry weight;
(3) in above-mentioned mud, add framework construction body, stirring and evenly mixing, wherein framework construction body dosage is 30.0% of mud dry weight.
Mud after process, compared to the primary sludge do not nursed one's health, after conditioning, the resistivity of mud reduces 92.5%.After mud after process carries out filter press dehydration, the moisture content of the cake of gained is about 51%.
Claims (7)
1. a deeply dehydrating sludge composite conditioner, is characterized in that, this amendment is made up of the component of following weight part:
Described tensio-active agent is quaternary surfactant or nonionic surface active agent.
2. a kind of deeply dehydrating sludge composite conditioner according to claim 1, it is characterized in that, described tensio-active agent is selected from one or more in palmityl trimethyl ammonium chloride, Dodecyl trimethyl ammonium chloride, cetyl trimethylammonium bromide, Trimethyllaurylammonium bromide, 4 bromide, polyoxyethylene octylphenol ether or alkyl glycoside.
3. a kind of deeply dehydrating sludge composite conditioner according to claim 1, it is characterized in that, described ferrous salt is selected from FeSO
4, FeCl
2or Fe (NO
3)
2in one or more.
4. a kind of deeply dehydrating sludge composite conditioner according to claim 1, it is characterized in that, described persulphate is selected from K
2s
2o
8, (NH
4)
2s
2o
8or Na
2s
2o
8in one or more.
5. a kind of deeply dehydrating sludge composite conditioner according to claim 1, is characterized in that, described framework construction body is Powdered, is selected from one or more in diatomite, wilkinite or rectorite leng.
6. an application for the deeply dehydrating sludge composite conditioner as described in as arbitrary in Claims 1 to 5, is characterized in that, described deeply dehydrating sludge composite conditioner is used for deeply dehydrating sludge, comprises the following steps:
(1) in pending mud, add tensio-active agent, stirring and evenly mixing, wherein tensio-active agent dosage is the 0.05-2.0% of mud dry weight;
(2) continue to add ferrous salt and persulphate, stirring and evenly mixing, oxidizing reaction occurs, and wherein ferrous salt dosage is the 2.5-10.0% of mud dry weight, persulphate dosage is the 3.0-12% of mud dry weight, and the mol ratio of ferrous salt and persulphate is 1.15:1 ~ 1.30:1;
(3) in above-mentioned mud, add framework construction body, stirring and evenly mixing, wherein framework construction body dosage is the 5.0-30.0% of mud dry weight.
7. the application of a kind of deeply dehydrating sludge composite conditioner according to claim 6, is characterized in that, described pending mud is active sludge or the digested sludge of water ratio more than 95%.
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|---|---|---|---|
| CN201410069338.2A CN103819072B (en) | 2014-02-27 | 2014-02-27 | A kind of deeply dehydrating sludge composite conditioner and application thereof |
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|---|---|---|---|
| CN201410069338.2A CN103819072B (en) | 2014-02-27 | 2014-02-27 | A kind of deeply dehydrating sludge composite conditioner and application thereof |
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| CN103819072B true CN103819072B (en) | 2015-11-18 |
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| CN105502882A (en) * | 2015-11-30 | 2016-04-20 | 攀枝花学院 | Method for improving municipal sludge dewatering performance |
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| CN106698888B (en) * | 2016-12-29 | 2018-08-21 | 华中科技大学 | A kind of chemical amendment dosage optimization method for deeply dehydrating sludge |
| CN108423962B (en) * | 2017-02-14 | 2020-12-29 | 湖南省环境保护科学研究院 | Method for improving sludge dewatering performance |
| CN107056000B (en) * | 2017-06-13 | 2020-06-30 | 江苏凯米膜科技股份有限公司 | Biological-chemical combined conditioning equipment and method thereof |
| CN108892357A (en) * | 2018-08-10 | 2018-11-27 | 华东师范大学 | A kind of compound type sludge cracks expelling water conditioner and its application |
| CN111233304B (en) * | 2020-02-06 | 2022-05-31 | 深圳市政水环境技术有限公司 | Wall breaking agent for sludge, hydrophobic skeleton, preparation method and sludge reduction method |
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