CN100522854C - Solidifying agent for solidifying and stabilizing treatment of generated dewatered sludge in sewage plant - Google Patents
Solidifying agent for solidifying and stabilizing treatment of generated dewatered sludge in sewage plant Download PDFInfo
- Publication number
- CN100522854C CN100522854C CNB2007101338759A CN200710133875A CN100522854C CN 100522854 C CN100522854 C CN 100522854C CN B2007101338759 A CNB2007101338759 A CN B2007101338759A CN 200710133875 A CN200710133875 A CN 200710133875A CN 100522854 C CN100522854 C CN 100522854C
- Authority
- CN
- China
- Prior art keywords
- cement
- gypsum
- lime
- sludge
- 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
Links
- 239000010802 sludge Substances 0.000 title claims abstract description 23
- 239000010865 sewage Substances 0.000 title claims abstract description 10
- 239000003795 chemical substances by application Substances 0.000 title abstract description 7
- 230000000087 stabilizing effect Effects 0.000 title description 2
- 239000000463 material Substances 0.000 claims abstract description 43
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 27
- 239000004568 cement Substances 0.000 claims abstract description 26
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 23
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 23
- 239000010881 fly ash Substances 0.000 claims abstract description 23
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 23
- 239000010440 gypsum Substances 0.000 claims abstract description 23
- 239000004571 lime Substances 0.000 claims abstract description 23
- 238000000034 method Methods 0.000 claims abstract description 17
- 230000006641 stabilisation Effects 0.000 claims abstract description 13
- 238000011105 stabilization Methods 0.000 claims abstract description 13
- 238000002156 mixing Methods 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 6
- 238000007711 solidification Methods 0.000 abstract description 5
- 230000008023 solidification Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000002689 soil Substances 0.000 abstract description 2
- 239000000440 bentonite Substances 0.000 abstract 3
- 229910000278 bentonite Inorganic materials 0.000 abstract 3
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 229910052500 inorganic mineral Inorganic materials 0.000 description 2
- 239000011707 mineral Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 229910052918 calcium silicate Inorganic materials 0.000 description 1
- 239000000378 calcium silicate Substances 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229910003480 inorganic solid Inorganic materials 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
Classifications
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Treatment Of Sludge (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
本发明涉及的是污水厂产生的脱水污泥进行固化/稳定化处理的方法，其特征是在脱水污泥中按重量比例添加固化材料和辅助固化材料膨润土，将各组分混合搅拌均匀，各组分所占重量百分比为：污泥30～80%，固化材料15～30%，膨润土5～40%；上述的固化材料由水泥、石灰、粉煤灰以及石膏，按一定重量配比。优点：处理后的污泥可以进行填埋处置，作为土材料进行再生资源利用。固化剂可以改善污泥的高含水率、低强度性质，具有提高固化效果，减少固化材料用量，降低处理成本的优点。固化剂的组成成分水泥、粉煤灰、石灰、石膏、膨润土分布广泛，价格低廉，有成品出售，能够实现污泥固化/稳定化处理技术的产业化。The invention relates to a solidification/stabilization treatment method for dewatered sludge produced in a sewage plant, which is characterized in that a solidification material and an auxiliary solidification material bentonite are added to the dewatered sludge in proportion by weight, and each component is mixed and stirred evenly. The weight percentage of the components is: 30-80% of sludge, 15-30% of solidified material, 5-40% of bentonite; the above-mentioned solidified material is composed of cement, lime, fly ash and gypsum in a certain weight ratio. Advantages: The treated sludge can be disposed of in landfill and used as a soil material for renewable resources. The curing agent can improve the high water content and low strength properties of the sludge, and has the advantages of improving the curing effect, reducing the amount of curing materials, and reducing the treatment cost. The components of the curing agent are cement, fly ash, lime, gypsum, and bentonite, which are widely distributed, and the price is low. There are finished products for sale, which can realize the industrialization of sludge solidification/stabilization treatment technology.
Description
Technical field
What the present invention relates to is that a kind of dewatered sludge that Sewage Plant is produced is cured/method of stabilization treatment.By this solidifying agent be cured/mud after the stabilization treatment can satisfy the requirement that landfill is disposed, and also can be used as general soil material and uses, and belongs to the resource environment field.
Background technology
The disposal of mud at present is mainly agricultural to transfer to, burning disposal and landfill yard landfill.It is agricultural that heavy metals exceeding standard in the mud has limited mud.Burning disposal investment and working cost are bigger.Mud is sent to sanitary filling field carries out the landfill disposal, because water ratio height, the mechanical property of mud are poor, undressed mud directly enters the engineering project disaster that landfill yard tends to cause landfill yards such as landslide.Mud is because the water ratio height, the organic content height, the inorganic solid particles composition is few, and it mainly is the hydrated product that relies on hydrated reaction of cement to form that curing/stabilizing is handled the formed intensity in back, so just need to consume a large amount of cement and could obtain certain intensity, so its processing costs is higher.
Summary of the invention
The objective of the invention is a large amount of mud of producing in the sewage disposal for solving, it is cured/method of stabilization treatment, the mud after the processing can satisfy that landfill is disposed or the requirement of recycling.
Technical scheme of the present invention: it is characterized in that adding by weight proportion in dewatered sludge the auxiliary solidify material wilkinite of solidify material, with each component mixing and stirring, the shared weight percent of each component is:
Mud 30～80%,
Solidify material 15～30%,
Wilkinite 5～40%;
Above-mentioned solidify material is made up of cement, lime, flyash and gypsum, and each moiety mass ratio is a cement: lime: flyash: gypsum=(13-18): (1-4): (1-3): (1-3).
Advantage of the present invention and effect are: in dewatered sludge, add a certain proportion of solidify material, and
Add a certain proportion of wilkinite as auxiliary solidify material, the hydrate that the solidify material hydration reaction produces and the cementation of wilkinite mineral form skeleton in mud, improve the intensity of solidification sludge, utilize the stable and sealing process of hydrate simultaneously, reduce the harm of mud environment to pollutent.And it specifically also has following characteristics: (1) processing cost significantly reduces: owing to increased the skeleton composition in the mud by adding wilkinite, can significantly reduce the solidify material consumption, thereby reduce the cost of handling; (2) composition cement, lime, flyash, gypsum, the wilkinite of solidifying agent are a kind of mineral wealth of extensive distribution, also have finished product to sell, and are convenient to realize the industrialization of sludge curing technology; (3) the outlet diversification after the sludge treatment: present method can be according to actual needs, makes that by optimizing the material addition both can carry out landfill after the sludge treatment disposes, and also can carry out recycling, as cap rock or the embankment material as landfill yard;
Embodiment
Embodiment 1:
Each component of the present invention mixes by following weight percent and forms:
Mud 65%
Solidify material 15%
Wilkinite 20%
Above-mentioned solidify material is by cement, lime, flyash and gypsum, and the weight ratio between them is a cement: lime: flyash: gypsum=14: 3: 2: 1.
According to this proportioning, in mud per ton, add the solidify material of 142.9kg, the wilkinite mixing and stirring of 285.7kg, 7 days unconfined compression strengths of the mud after the processing can reach 50kPa, and coefficient of permeability is less than 10
-7Cm/s can satisfy and carry out that landfill is disposed or as the needs of landfill yard earthing.Directly adopt the method for handling than not adding wilkinite, reach identical effect and can save nearly 4 times expense.
Embodiment 2:
Each component of the present invention mixes by following weight percent and forms:
Mud 60%
Solidify material 20%
Wilkinite 20%.
Above-mentioned solidify material is by cement, lime, flyash and gypsum, and the weight ratio between them is a cement: lime: flyash: gypsum=16: 2: 1: 1.
Utilize this proportioning, in mud per ton, add the 333.3kg solidify material, the wilkinite mixing and stirring of 333.3kg, 7 days unconfined compression strengths of the mud after the processing can reach 100kPa.Can satisfy the requirement of banketing,, reach identical effect and can save nearly 5 times expense than not adding the method that wilkinite is directly handled as common engineering.
Embodiment 3:
Each component of the present invention mixes by following weight percent and forms:
Mud 30%
Solidify material 30%
Wilkinite 40%
Above-mentioned solidify material is by cement, lime, flyash and gypsum, and the weight ratio between them is a cement: lime: flyash: gypsum=13: 4: 3: 3.
According to this proportioning, get mud 300kg, solidify material 300kg, with wilkinite 400Kg mixing and stirring, 7 days unconfined compression strengths of mud after the processing can reach 50kPa, and coefficient of permeability is less than 10-7cm/s, can satisfy to carry out that landfill is disposed or as the needs of landfill yard earthing.Directly adopt the method for handling than not adding wilkinite, reach identical effect and can save nearly 4 times expense.
Embodiment 4:
Each component of the present invention mixes by following weight percent and forms:
Mud 80%
Solidify material 15%
Wilkinite 5%
Above-mentioned solidify material is by cement, lime, flyash and gypsum, and the weight ratio between them is a cement: lime: flyash: gypsum=18: 1: 1: 3.
Utilize this proportioning, get mud 800kg, solidify material, 15kg and wilkinite 5kg mixing and stirring, 7 days unconfined compression strengths of the mud after the processing can reach 100kPa.Can satisfy the requirement of banketing,, reach identical effect and can save nearly 5 times expense than not adding the method that wilkinite is directly handled as common engineering.
To mud be cured/to put forward high-intensity mechanism mainly be that hydrated reaction of cement generates to stabilization processes Hydrated calcium silicate solid waste particle is produced cementation. The present invention is a kind of by adding in mud Sludge solidifying agent realizes reducing the curing materials consumption, reduces the target of processing cost. And adopt Curing agent has wide material sources, cheap, characteristics with shaped article, is convenient to realize sludge curing The industrialization of/stabilization processes technology.
Claims (5)
1, the dewatered sludge that produces of Sewage Plant is cured/method of stabilization treatment, it is characterized in that adding by weight proportion in dewatered sludge solidify material and auxiliary solidify material wilkinite, and with each component mixing and stirring, the shared weight percent of each component is:
Mud 30～80%,
Solidify material 15～30%,
Wilkinite 5～40%;
Above-mentioned solidify material is made up of cement, lime, flyash and gypsum, and each moiety mass ratio is a cement: lime: flyash: gypsum=(13-18): (1-4): (1-3): (1-3).
2. the dewatered sludge that Sewage Plant according to claim 1 produces is cured/method of stabilization treatment, it is characterized in that the shared weight percent of described each component:
Mud 65%,
Solidify material 15%,
Wilkinite 20%;
Above-mentioned solidify material is made up of cement, lime, flyash and gypsum, and the weight ratio between them is a cement: lime: flyash: gypsum=14: 3: 2: 1.
3. the dewatered sludge that Sewage Plant according to claim 1 produces is cured/method of stabilization treatment, it is characterized in that the shared weight percent of described each component:
Mud 60%,
Solidify material 20%,
Wilkinite 20%;
Above-mentioned solidify material is made up of cement, lime, flyash and gypsum, and the weight ratio between them is a cement: lime: flyash: gypsum=16: 2: 1: 1.
4. the dewatered sludge that Sewage Plant according to claim 1 produces is cured/method of stabilization treatment, it is characterized in that the shared weight percent of described each component:
Mud 30%,
Solidify material 30%,
Wilkinite 40%,
Above-mentioned solidify material is made up of cement, lime, flyash and gypsum, and the weight ratio between them is a cement: lime: flyash: gypsum=13: 4: 3: 3.
5. the dewatered sludge that Sewage Plant according to claim 1 produces is cured/method of stabilization treatment, it is characterized in that the shared weight percent of described each component:
Mud 80%,
Solidify material 15%,
Wilkinite 5%,
Above-mentioned solidify material is made up of cement, lime, flyash and gypsum, and the weight ratio between them is a cement: lime: flyash: gypsum=18: 1: 1: 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101338759A CN100522854C (en) | 2007-10-12 | 2007-10-12 | Solidifying agent for solidifying and stabilizing treatment of generated dewatered sludge in sewage plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007101338759A CN100522854C (en) | 2007-10-12 | 2007-10-12 | Solidifying agent for solidifying and stabilizing treatment of generated dewatered sludge in sewage plant |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101172749A CN101172749A (en) | 2008-05-07 |
| CN100522854C true CN100522854C (en) | 2009-08-05 |
Family
ID=39421542
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2007101338759A Expired - Fee Related CN100522854C (en) | 2007-10-12 | 2007-10-12 | Solidifying agent for solidifying and stabilizing treatment of generated dewatered sludge in sewage plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100522854C (en) |
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101633549B (en) * | 2009-08-31 | 2011-09-07 | 江汉大学 | Sludge conditioner and sludge dewatering method thereof |
| CN101805104B (en) * | 2010-04-27 | 2012-11-28 | 河海大学 | Soil treatment method for dredged sediment |
| CN101955345B (en) * | 2010-09-29 | 2013-04-17 | 江苏艾特克环境工程设计研究院有限公司 | Neutral inorganic composite material for dehydration, solidification and modification of high water content sludge |
| CN102408179A (en) * | 2011-07-25 | 2012-04-11 | 江苏东方生态清淤工程有限公司 | Dewatered sludge curing agent |
| CN102424511A (en) * | 2011-09-02 | 2012-04-25 | 重庆大学 | Solidification treatment method for sludge of urban sewage plant |
| WO2013063774A1 (en) * | 2011-11-02 | 2013-05-10 | Empire Technology Development Llc | Solidifying sludge |
| CN103159391A (en) * | 2011-12-08 | 2013-06-19 | 宇星科技发展(深圳)有限公司 | Sludge dewatering solidification treatment method |
| CN102659294A (en) * | 2012-05-23 | 2012-09-12 | 重庆大学 | Solidification of urban sewage treatment plant sludge with phosphogypsum, fly ash and carbide slag |
| CN103979771B (en) * | 2013-02-07 | 2016-03-30 | 株式会社Cmd技术团 | Utilize the high-moisture-contensludge sludge solidifying agent of petroleum coke desulfurated plaster |
| CN103288330A (en) * | 2013-07-10 | 2013-09-11 | 江苏坤泽科技股份有限公司 | Freshwater sludge curing agent |
| CN104310884B (en) * | 2014-10-08 | 2017-02-08 | 南京大学 | Curing agent for attapulgite reinforced printing and dyeing sludge treatment and curing method thereof |
| CN104478058B (en) * | 2014-11-04 | 2016-03-30 | 沈礼群 | A kind of Gou Tang lake heavy metal agriculture chemical pollutes solidification remover and preparation method thereof |
| CN105819798B (en) * | 2015-01-04 | 2018-05-22 | 三川德青科技有限公司 | A kind of quick setting and high strength sludge consolidating agent and preparation method thereof |
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| CN105801056A (en) * | 2016-04-13 | 2016-07-27 | 吴申龙 | Efficient curing agent for treating sewer sludge and preparation method of efficient curing agent |
| CN105753279B (en) * | 2016-04-15 | 2018-05-22 | 武汉美丽东方环保有限公司 | Silt/sludge curing agent and use method thereof |
| CN106277663A (en) * | 2016-04-29 | 2017-01-04 | 天津城建大学 | Sludge solidifying agent and application, sludge curing soil |
| CN106082903B (en) * | 2016-06-17 | 2018-02-09 | 武汉大学 | A kind of dredging silt composite curing agent |
| CN107586003A (en) * | 2017-08-22 | 2018-01-16 | 北京融达环科新材料科技有限公司 | Sludge treating agent and method for sludge treatment |
| CN107473684B (en) * | 2017-09-11 | 2020-05-05 | 广州中科地化环保工程有限公司 | Environment-friendly river bottom mud treatment agent |
| CN108623233B (en) * | 2018-05-23 | 2021-11-12 | 成都恩承科技股份有限公司 | Curing agent for sulfonated drilling rock debris treatment and application thereof |
| CN112408733A (en) * | 2020-11-24 | 2021-02-26 | 肇庆市武大环境技术研究院 | Sludge solidification method |
| CN112390484A (en) * | 2020-11-24 | 2021-02-23 | 肇庆市武大环境技术研究院 | Heavy metal sludge modifier, preparation method thereof and application thereof in heavy metal sludge consolidation |
| CN114940605A (en) * | 2022-06-15 | 2022-08-26 | 河南建博环保科技研究院有限公司 | Method for preparing baking-free lightweight aggregate from papermaking sludge and application |
| CN117049851A (en) * | 2023-06-30 | 2023-11-14 | 山东大卫国际建筑设计有限公司 | Curing agent for building slag water stable layer base material and preparation method thereof |
| CN117819889A (en) * | 2024-01-03 | 2024-04-05 | 中国长江三峡集团有限公司 | Composite bentonite and bentonite pad and river bank protection formed therefrom |
-
2007
- 2007-10-12 CN CNB2007101338759A patent/CN100522854C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN101172749A (en) | 2008-05-07 |
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