CN102452781B - Based on the carbon back mud combined cooker dewatering agent of sludge incineration - Google Patents
Based on the carbon back mud combined cooker dewatering agent of sludge incineration Download PDFInfo
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- CN102452781B CN102452781B CN201010516310.0A CN201010516310A CN102452781B CN 102452781 B CN102452781 B CN 102452781B CN 201010516310 A CN201010516310 A CN 201010516310A CN 102452781 B CN102452781 B CN 102452781B
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Abstract
The invention discloses a kind of carbon back mud combined cooker dewatering agent based on sludge incineration, be made up of carbon back framework construction body and a small amount of auxiliary agent; Wherein the addition of carbon back framework construction body is 1% ~ 5% of mud weight, and the addition of auxiliary agent is 0.03% ~ 1.0% of mud weight.Described carbon back framework construction body is any one or mixtures several arbitrarily in wood chip, biological straw, brown coal, coal gangue.The carbon back framework construction body that the present invention uses and auxiliary agent can reduce electrostatic repulsion between mud granule and hydration, its porous and granular structure energy absorbed portion mud, form the crystalline network of infiltration, stability, ensure that the permeability of filter cake in mechanical dewatering process, improve the dewatering speed of filtration and compression stage.Its homogeneous skeletal formed makes compression moisture content of the cake even, has good homogeneity.The present invention has adding less, mud filterability can the feature such as good, dewatering efficiency is high, mud cake solid content, and the carbon based substances contained in its composition, adds the calorific value of mud cake, be conducive to the incineration disposal of follow-up mud cake.
Description
Technical field
The present invention relates to sludge disposal technology, especially relate to a kind of carbon back mud combined cooker dewatering agent based on sludge incineration that the sludge conditioning dewatering agent based on carbon back framework construction body is applied in deep dehydration.
Background technology
Mud is the inevitable outcome of city domestic sewage process, and its generation is increasing, and the process of mud and disposal have become a bottleneck problem urgently to be resolved hurrily.Dehydration is the process that any process disposal options all must experience, usual employing chemical conditioning method, add dehydration flocculant and make mud colloid microparticle surfaces generation chemical reaction, in and mud colloid particulate with electric charge, impel the particle flco that mud particle coagulation becomes larger, make water separate from mud granule, strengthen dewatering effect simultaneously.
Through centrifugal or belt type dehydration after current sludge of sewage treatment plant generally adopts polyacrylamide (PAM) polymeric flocculant to nurse one's health, but due to PAM long-chain adsorption bridging easily the group of being formed dress and wrap up certain water, dehydrated sludge cake water ratio is up to about 80%, mechanical index cannot be reached just as the mud as " bean jelly " after dehydration, great difficulty is brought to follow-up sludge incineration or landfill stabilization, and PAM is expensive, monomer has hypertoxicity, easily causes secondary pollution.Therefore, many investigators find the substitute products of PAM, and main patent report relevant to existing sludge dehydration conditioner is below introduced.
In the amendment that CN1621371 announces, organic polymer dehydrating and conditioning agent content is high, and cost is higher.When the dosage of lime powder is less, poor processing effect or cost high; During the dosage height of lime powder, although dehydrating effect increases, the mud after modified is high-alkali state, and a large amount of organic matters in mud must be depleted, and are unfavorable for recycling.Disclose a kind of high-effective composite filter aid of sludge dewatering in CN101182095, its feed composition reaches 9 kinds more than, complicated process of preparation.In the dewatering agent published in CN101100345A, the highest consumption of tensio-active agent reaches 5% of pre-treatment water-containing sludge, will inevitably remain exhibiting high surface promoting agent, cause secondary pollution in water.
Summary of the invention
The natural characteristics of mud causes because congregation forms reticulated structure between floc particle, and be covered with higher solid substance at filter media surface, thus prevent sedimentation and the compression of mud, this just requires the compressibility will noting mud cake when carrying out filtration treatment to mud.Sludge conditioner based on framework construction body can form the skeleton that can be born high pressure in mud, thus improves its structure and mechanical property work, improves flocculation sludge dewatering.By to framework construction body, especially the materialization research of brown coal finds, brown coal contain abundant humic acid, and its porosity is high, reactive strong, be the coal that a kind of chemically reactive is good, sludge conditioning dehydration aspect can be used for as one good carbon back framework construction body.On the one hand, carbon back framework construction body after fragmentation has larger surface-area, the electric charge that surface is carried can improve the dewatering of mud, on the other hand, carbon back framework construction body particle is added in mud, its skeleton structure, as the framework construction body of conditioning mud, can strengthen the intensity of flco, and the crystalline network of formation infiltration, stability ensure that the permeability of filter cake in mechanical dewatering process.Generally speaking, brown coal calorific value 9540 ~ 12720 kilojoule per kilogram, sawdust wood chip calorific value about 18000 kilojoule per kilogram, biological straw calorific value 14600 ~ 16200 kilojoule per kilogram, coal gangue calorific value 2300 ~ 16530 kilojoule per kilogram, carbon back framework construction body comprises one or more combinations of substances above-mentioned and forms.After adding carbon back composite conditioner, mud solid content can be increased, improve the calorific value of dehydrated sludge cake, be conducive to the incineration disposal of follow-up sludge cake.
Based on above problem, the object of the present invention is to provide a kind of a kind of carbon back mud combined cooker dewatering agent based on sludge incineration applied in deep dehydration based on the sludge conditioning dewatering agent of framework construction body.
The present invention is realized by following technical measures, and a kind of carbon back mud combined cooker dewatering agent based on sludge incineration, is made up of carbon back framework construction body and a small amount of auxiliary agent; Wherein the addition of carbon back framework construction body is 1% ~ 5% of mud weight, and the addition of auxiliary agent is 0.03% ~ 1.0% of mud weight.
Concrete, described carbon back framework construction body is any one or mixtures several arbitrarily in wood chip, biological straw, brown coal, coal gangue.
Concrete, described auxiliary agent is any one or the mixtures several arbitrarily that improve in the polyelectrolyte of mud granule character, iron aluminium salt.
More specifically, polyelectrolyte is water-soluble polyelectrolyte
Concrete, described carbon back framework construction body particle diameter < 1mm.
The invention also discloses the method using the sludge conditioning of the above-mentioned carbon back mud combined cooker dewatering agent based on sludge incineration to dewater is: be first dissolved in by auxiliary agent in appropriate water by addition, then compounding agent solution is added in mud and stirs, add the granular carbon back framework construction thing of addition again, mix, then through sludge dewatering equipment dehydration, the mud cake of high solids content, high heating value can be obtained.
The present invention effectively can improve the dewatering of mud, and starting material are cheap and easy to get, and cost is low, and technique is simple, and non-secondary pollution, need not can obtain the lower mummification mud cake of water ratio through drying process.
Specifically, feature of the present invention is:
(1) the present invention makes full use of the distinctive physico-chemical property of carbon back framework construction body, on the one hand, mud after the conditioning of carbon back framework construction body, resistivity reduces greatly, improve the filterability of mud cake, strengthen sludge conditioning dehydrating effect, on the other hand, through the present invention's conditioning, the acid-basicity of mud and sewage is not changed, mud and sewage is in neutral, organic matter in not loss mud, this amendment contains a large amount of carbonaceous material, maintains mud cake calorific value and does not decline, even slightly rise, be conducive to the incineration disposal of mud cake.
(2) mud is after the conditioning of this composite conditioner, and its SRF (sludge specific resistance) drops to 10
7~ 10
8s
2/ g, CST (sludge capillary water absorbing time) drop to below 10s, substantially improve the strainability of mud.
Advantage of the present invention is: a small amount of auxiliary agent added and mud fully stir, and with mud electric charge in flocculation, adds the electric charge that carbon back framework construction surface is carried, under both synergistic effects, can reduce the Coulomb repulsion between mud granule and hydration.Simultaneously, bridging action is formed between framework construction body particle and flco, the intensity of flco can be strengthened, its infiltration formed, the crystalline network of stability ensure that the permeability of filter cake in mechanical dewatering process, reduce compression mud cake and cause sludge bulking or " sponge bounce-back " problem because of pressure release, and then improve filtration and compression stage dewatering speed, the porous and granular structure energy absorbed portion mud of carbon back framework construction body, form a homogeneous skeletal construct, moisture content of the cake after compression is even, there is good homogeneity, mud is avoided to produce " plate bursting " or " race mud " phenomenon when high pressure press filtration.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail.
Embodiment 1:
With brown coal carbon back mud combined cooker dewatering agent to the conditioning of mud, add the molysite of weight 0.1% in mixing sludge after, under rotating speed 300rpm, fully stir 30s, and then add the brown coal of weight 1.9%, under rotating speed 100rpm, fully stir 5min, complete sludge conditioning.After tested, SRF is by 2.6 × 10 of primary sludge
9s
2/ g drops to 1.9 × 10
8s
2/ g, CST drop to 8.5s by the 23.6s of primary sludge, and sludge filtration performance improves.
Embodiment 2:
With brown coal, wood chip carbon back mud combined cooker dewatering agent to the conditioning of mud, add the bodied ferric sulfate of weight 0.05% in mixing sludge after, fully 30s is stirred under rotating speed 300rpm, and then add the brown coal of weight 1.0%, the wood chip of 0.8%, under rotating speed 100rpm, fully stir 5min, complete sludge conditioning.After tested, SRF is by 2.6 × 10 of primary sludge
9s
2/ g drops to 1.4 × 10
8s
2/ g, CST drop to 8.7s by the 23.6s of primary sludge, and sludge filtration performance improves.
Embodiment 3:
With brown coal, wood chip carbon back mud combined cooker dewatering agent to the conditioning of mud, add the molysite of weight 0.1% in mixing sludge after, fully 30s is stirred under rotating speed 300rpm, then add the brown coal of weight 2.0%, the wood chip of 1% and 0.02% polyelectrolyte, under rotating speed 100rpm, fully stir 5min, complete sludge conditioning.SRF is by 2.6 × 10 of primary sludge
9s
2/ g drops to 2.0 × 10
8s
2/ g, CST drop to 7.8s by the 23.6s of primary sludge, and sludge filtration performance improves.
Embodiment 4:
With coal gangue, biological straw carbon back mud combined cooker dewatering agent to the conditioning of mud, add the molysite of weight 0.3% in mixing sludge after, fully 30s is stirred under rotating speed 300rpm, and then add the coal gangue of weight 2% and the biological straw of 2.5%, fully 5min is stirred under rotating speed 100rpm, measure its resistivity to find, SRF is by 2.6 × 10 of primary sludge
9s
2/ g drops to 2.3 × 10
8s
2/ g, CST drop to 7.5s by the 23.6s of primary sludge, and after conditioning, the strainability of mud improves.
Embodiment 5:
With brown coal, coal gangue carbon back mud combined cooker dewatering agent to the conditioning of mud, add the bodied ferric sulfate of weight 0.03% in mixing sludge after, fully 30s is stirred under rotating speed 300rpm, and then add the brown coal of weight 2.0%, the coal gangue of 1.5%, fully 5min is stirred under rotating speed 100rpm, measure its resistivity to find, SRF is by 2.6 × 10 of primary sludge
9s
2/ g drops to 2.3 × 10
8s
2/ g, CST drop to 6.8s by the 23.6s of primary sludge, and after conditioning, the strainability of mud improves.
Embodiment 6:
With brown coal, biological straw carbon back mud combined cooker dewatering agent to the conditioning of mud, add in mixing sludge weight 1.5% brown coal and 0.8% molysite after, fully 3min is stirred under rotating speed 300rpm, and then add the polyelectrolyte of weight 0.02% and the biological straw of 1.5%, fully 5min is stirred under rotating speed 100rpm, measure its resistivity to find, SRF is by 2.6 × 10 of primary sludge
9s
2/ g drops to 1.0 × 10
8s
2/ g, CST drop to 5.3s by the 23.6s of primary sludge, and after conditioning, the strainability of mud improves.
Embodiment 7:
With wood chip, biological straw carbon back mud combined cooker dewatering agent to the conditioning of mud, add in mixing sludge weight 2% wood chip and 0.3% molysite after, fully 3min is stirred under rotating speed 300rpm, and then add the polyelectrolyte of weight 0.02% and the biological straw of 2.5%, fully 5min is stirred under rotating speed 100rpm, measure its resistivity to find, SRF is by 2.6 × 10 of primary sludge
9s
2/ g drops to 2.3 × 10
8s
2/ g, CST drop to 6.0s by the 23.6s of primary sludge, and after conditioning, the strainability of mud improves.
Embodiment 8:
With brown coal, wood chip and coal gangue carbon back mud combined cooker dewatering agent to the conditioning of mud, add the molysite of weight 0.4% in mixing sludge after, fully 30s is stirred under rotating speed 300rpm, and then add the brown coal of weight 3.0% and the wood chip of 1.0% and 0.6% coal gangue, fully 5min is stirred under rotating speed 100rpm, measure its resistivity to find, SRF is by 2.6 × 10 of primary sludge
9s
2/ g drops to 2.3 × 10
8s
2/ g, CST drop to 7.0s by the 23.6s of primary sludge, and after conditioning, the strainability of mud improves.
Be more than to the present invention is based on sludge incineration carbon back mud combined cooker dewatering agent and conditioning dewatering its set forth; the present invention is understood for helping; but embodiments of the present invention are not restricted to the described embodiments; any do not deviate from the principle of the invention under do change, modification, substitute, combination, simplify; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (2)
1., based on the method to mixing sludge conditioning dehydration of sludge incineration, it is characterized in that comprising the following steps:
First, be that the auxiliary agent of 0.03% ~ 0.05% of mud weight is dissolved in appropriate water by addition, form compounding agent solution, wherein said auxiliary agent is molysite or iron aluminium salt;
Secondly, described compounding agent solution is added in described mud, stirs;
3rd, by addition be 1% ~ 5% of mud weight, the carbon back framework construction body of granular is added in mud, stir, wherein said carbon back framework construction body is brown coal;
4th, described conditioned mud is dewatered through water extracter, obtains the mud cake of high solids content, high heating value.
2. method according to claim 1, is characterized in that: the particle diameter of the carbon back framework construction body of described granular is less than 1mm.
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Families Citing this family (15)
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|---|---|---|---|---|
| CN103011548A (en) * | 2012-12-27 | 2013-04-03 | 哈尔滨工业大学水资源国家工程研究中心有限公司 | Conditioner for combinedly conditioning sludge and method for dehydrating sludge through utilizing conditioner |
| CN104445853B (en) * | 2014-10-25 | 2017-03-08 | 丁海港 | A kind of method and apparatus realizing deeply dehydrating sludge with straw and wood flour |
| CN104788001A (en) * | 2015-03-26 | 2015-07-22 | 安徽省通源环境节能有限公司 | Sludge high-dry dehydration conditioning method |
| CN105502884B (en) * | 2015-12-07 | 2018-07-13 | 章亮庄 | A kind of mud dewatering method of high efficiency, low cost |
| CN105753296A (en) * | 2016-04-29 | 2016-07-13 | 江南大学 | Biological excess sludge deep dehydration conditioner |
| CN109020156A (en) * | 2018-08-27 | 2018-12-18 | 成都信息工程大学 | A method of improving sludge from wastewater treatment plant water separation capability |
| WO2020097786A1 (en) * | 2018-11-13 | 2020-05-22 | Suez Water Treatment Company Limited | A sludge treatment method |
| CN109264947A (en) * | 2018-12-06 | 2019-01-25 | 佛山科学技术学院 | A kind of method for sludge treatment |
| CN109293183A (en) * | 2018-12-06 | 2019-02-01 | 佛山科学技术学院 | A kind of Treatment of Sludge medicament and method for sludge treatment |
| CN110092570A (en) * | 2019-05-14 | 2019-08-06 | 吉林建筑大学 | A kind of sludge concentration and dewatering agent and preparation method thereof |
| CN110240386B (en) * | 2019-07-11 | 2023-11-17 | 中国科学院城市环境研究所 | Straw and sludge cooperative treatment device and method |
| CN111116012A (en) * | 2020-02-18 | 2020-05-08 | 鸿泰瑞佶环保(北京)有限公司 | Sludge conditioner and application treatment method thereof |
| CN111253958A (en) * | 2020-03-06 | 2020-06-09 | 中国科学院生态环境研究中心 | Method for reducing sludge mixed straw pyrolysis resources |
| CN115196847A (en) * | 2022-08-02 | 2022-10-18 | 华南理工大学 | Deep dehydration method for treating waste by waste |
| CN115925208B (en) * | 2022-11-07 | 2023-11-10 | 镇江市规划勘测设计集团有限公司 | High-water-content waste slurry dehydration method based on controllable skeleton effect and preparation method of high-strength bricks |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1781853A (en) * | 2005-10-28 | 2006-06-07 | 北京科技大学 | Dewatering method for sludge microbiologically treating life waste water |
| CN101100345A (en) * | 2007-06-26 | 2008-01-09 | 广州铬德工程有限公司 | Sludge dewatering agent and dewatering method thereof |
| CN101693593A (en) * | 2009-09-30 | 2010-04-14 | 连小美 | Chemical conditioning method of dehydration pretreatment of activated sludge |
| CN101781073A (en) * | 2010-01-26 | 2010-07-21 | 东北大学 | Method of dewatering sludge and turning sludge into fuel |
-
2010
- 2010-10-22 CN CN201010516310.0A patent/CN102452781B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1781853A (en) * | 2005-10-28 | 2006-06-07 | 北京科技大学 | Dewatering method for sludge microbiologically treating life waste water |
| CN101100345A (en) * | 2007-06-26 | 2008-01-09 | 广州铬德工程有限公司 | Sludge dewatering agent and dewatering method thereof |
| CN101693593A (en) * | 2009-09-30 | 2010-04-14 | 连小美 | Chemical conditioning method of dehydration pretreatment of activated sludge |
| CN101781073A (en) * | 2010-01-26 | 2010-07-21 | 东北大学 | Method of dewatering sludge and turning sludge into fuel |
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