CN103979758A - Acidified sludge - Google Patents
Acidified sludge Download PDFInfo
- Publication number
- CN103979758A CN103979758A CN201410237845.2A CN201410237845A CN103979758A CN 103979758 A CN103979758 A CN 103979758A CN 201410237845 A CN201410237845 A CN 201410237845A CN 103979758 A CN103979758 A CN 103979758A
- Authority
- CN
- China
- Prior art keywords
- mud
- acidifying
- sludge
- batching
- acidified sludge
- 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.)
- Granted
Links
- 239000010802 sludge Substances 0.000 title abstract description 17
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 16
- 238000004519 manufacturing process Methods 0.000 claims abstract description 14
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 8
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 8
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 8
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 8
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 8
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 7
- 229960000892 attapulgite Drugs 0.000 claims abstract description 7
- 239000004927 clay Substances 0.000 claims abstract description 7
- 229910052625 palygorskite Inorganic materials 0.000 claims abstract description 7
- 229920002451 polyvinyl alcohol Polymers 0.000 claims abstract description 7
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 7
- 239000004372 Polyvinyl alcohol Substances 0.000 claims abstract description 6
- 239000000203 mixture Substances 0.000 claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000000428 dust Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 230000020477 pH reduction Effects 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 4
- 235000012054 meals Nutrition 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 3
- 230000007613 environmental effect Effects 0.000 abstract description 4
- 239000000463 material Substances 0.000 abstract description 3
- 239000000843 powder Substances 0.000 abstract description 3
- 238000011161 development Methods 0.000 abstract description 2
- 238000003825 pressing Methods 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 abstract 3
- 239000004566 building material Substances 0.000 abstract 1
- 239000004088 foaming agent Substances 0.000 abstract 1
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 abstract 1
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 abstract 1
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 abstract 1
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 abstract 1
- 238000003801 milling Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 239000002253 acid Substances 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 241000282941 Rangifer tarandus Species 0.000 description 1
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 230000000274 adsorptive effect Effects 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000009967 tasteless effect Effects 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Abstract
The invention discloses an acidified sludge. The technical scheme is as follows: the acidified sludge is composed of sludge, attapulgite clay, ferrous sulfate, instant sodium silicate, polyvinyl alcohol, hydroxypropyl methylcellulose and sodium carbonate. The production method of the acidified sludge comprises the following steps: inputting acidified sludge materials into a mill, and milling into powder, thereby obtaining the acidified sludge. The pH value of the acidified sludge is controlled at 6.5-7.5, so that the utilization ratio of the sludge can be enhanced, thereby bringing in favorable economic benefit, environmental benefit and social benefit and changing wastes into valuable substances. The acidified sludge has the characteristics of favorable plasticity, favorable binding property, high heat stability and high dry pressing strength. The acidified sludge is simple in production method and low in production cost, and can be used for continuous development and utilization for producing multiple novel products. The acidified sludge is suitable for producing building materials, foaming agents and firefighting products.
Description
Technical field
The present invention relates to acidification, be specifically related to the mud after a kind of acidifying.
Background technology
Approximately 1,400,000 tons of the sludge quantities (dry weight) of the annual discharge of wastewater treatment in China factory, and with annual more than 10% speed increment, mud is as the product of sewage treatment process, water ratio is high, organic content is high, it is smelly easily to degenerate, the problem of environmental pollution of sludge creation becomes increasingly conspicuous, caused great potential safety hazard, environmental stress and economical load, the mud that does not obtain safety, environmental protection treatment disposal is larger to the harm of environment.
Summary of the invention
The object of the invention is to overcome weak point in prior art, the mud after a kind of acidifying is provided.
Mud batching after acidifying is made up of mud, attapulgite clay, ferrous sulfate, quick dissolved sodium silicate, polyvinyl alcohol, Vltra tears and sodium carbonate.
The production method of the mud after acidifying: by abrasive dust in the mud batching input grinding machine after acidifying, the meal after abrasive dust is the mud after acidifying.
The moisture percentage in sewage sludge high (75%～99%) that urban wastewater treatment firm produces, is a kind of paste, and the mud that household stains treatment plant produces is alkalescence mostly, and pH value is 8～10, is unfavorable for the product of direct production recycling.
For the significant challenge of reply water resource environment, China will continue to strengthen the investment of urban infrastructure.The energy-conserving and environment-protective requirement day by day improving along with government, the continuation of municipal public use are open, the propelling of Environmental Industry policy and being gradually improved of investment and financing environment, and wastewater treatment in China and regeneration cause will welcome Historic Opportunities for th e Development.
Attapulgite clay has unique layer chain-like structure feature, and crystal is needle-like, fibrous or fiber collection shape.Attapulgite clay has unique dispersion, high temperature resistant, the anti-good colloidal property such as saline and alkaline and higher adsorptive power, and has certain plasticity-and cohesive force.
Anhydrous slufuric acid ferrous iron is white powder, is light green crystal containing the ferrous sulfate of crystal water, and the ferrous sulfate of 10% aqueous solution is acid to reindeer moss, and pH value is about 3.7, in the present invention for the alkalescence of mud.
Quick dissolved sodium silicate is white pulverulent material, can be dissolved in fast water, has that cohesive force is strong, intensity is higher, acid resistance, good heat resistance, the feature of alkali resistance and poor water resistance.
Polyethenol series white solid, that external form is divided is cotton-shaped, particulate state, Powdered three kinds; Nonpoisonous and tasteless, particulate state can be dissolved in 80--90 DEG C of water, pulverously after other powders pre-dispersed, can dissolve at normal temperatures.There is good viscosity, polymerizability, cohesiveness and water-retentivity.
Vltra tears has thickening capabilities, salt discharge, pH stability, water-retentivity, dimensional stability, good film-forming properties and the feature such as resistance to enzyme, dispersiveness and cohesiveness widely.
Sodium carbonate has the general character and the thermostability of salt, soluble in water, and its aqueous solution is alkalescence, in the present invention for adjusting the sludge pH value after acidifying.
The present invention is achieved by following technical proposals:
1, the batching of the mud after acidifying is made up of following component by weight percentage: mud work in-process 90～98%, quick dissolved sodium silicate 0.1～5%, polyvinyl alcohol 0.1～5%, Vltra tears 0.01～3% and sodium carbonate 0～3% after acidifying.
2, the production method of the mud after acidifying: by abrasive dust in the mud batching input grinding machine after acidifying, particle fineness≤0.074 millimeter, the meal after abrasive dust is the mud finished product after acidifying.
3, the half-finished production method of the mud after acidifying: stir in the stirrer (1) input of the batching of mud mixture having been turned round, mud mixture carries out acidification in stirring; (2) by the mud mixture after acidification, push as mud flap thickness≤3 millimeter of mud flap by twin rollers; (3) mud flap is transported to roasting in rotary type stoving oven, roasting time is 1～3 hour, and maturing temperature is controlled at 100～250 DEG C, mud flap water content≤15% after roasting, mud flap after roasting is the mud work in-process after acidifying, and PCm is weight percentage.
4, the batching of mud mixture is made up of following component by weight percentage: mud 70～88%, attapulgite clay 8～25% and ferrous sulfate 0.1～5%.
The production method of the mud after acidifying takes first acidifying to carry out compounding ingredient again, can avoid ferrous sulfate and quick dissolved sodium silicate, polyvinyl alcohol, Vltra tears and sodium carbonate generation chemical reaction, give full play to raw-material characteristic separately in batching, and obtain complementation, guarantee the mud inner quality after acidifying.
According to the needs of quality product, adopt sodium carbonate to adjust the sludge pH value after acidifying, method is simple.
After the acidified processing of mud, sludge pH value is controlled at 6.5～7.5, can improve the utilization ratio of mud, not only can bring good economic benefit, environmental benefit and social benefit, and can realize and turning waste into wealth.
Mud after acidifying has good plasticity-, cohesiveness, thermostability and the high feature of dry-pressing intensity.
The production method of the mud after acidifying is simple, low production cost, and research and development utilizes mud to produce multiple product innovation.
Mud after acidifying is applicable to produce material of construction, whipping agent and fire product.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
1, the batching of the mud after acidifying is made up of following component by weight percentage: mud work in-process 95%, quick dissolved sodium silicate 2.5%, polyvinyl alcohol 2%, Vltra tears 0.48% and sodium carbonate 0.02% after acidifying.
2, the production method of the mud after acidifying: by abrasive dust in the mud batching input grinding machine after acidifying, particle fineness≤0.074 millimeter, the meal after abrasive dust is the mud finished product after acidifying.
3, the half-finished production method of the mud after acidifying: stir in the stirrer (1) input of the batching of mud mixture having been turned round, mud mixture carries out acidification in stirring; (2) by the mud mixture after acidification, push as mud flap thickness≤3 millimeter of mud flap by twin rollers; (3) mud flap is transported to roasting in rotary type stoving oven, roasting time is 3 hours, and maturing temperature is controlled at 150～200 DEG C, mud flap water content≤15% after roasting, and the mud flap after roasting is the mud work in-process after acidifying.
4, the batching of mud mixture is made up of following component by weight percentage: mud 80%, attapulgite clay 19.5% and ferrous sulfate 0.5%.
Claims (4)
1. the mud after an acidifying, it is characterized in that, the mud batching after acidifying is made up of following component by weight percentage: mud work in-process 90～98%, quick dissolved sodium silicate 0.1～5%, polyvinyl alcohol 0.1～5%, Vltra tears 0.01～3% and sodium carbonate 0～3% after acidifying.
2. the production method of the mud after acidifying according to claim 1, is characterized in that, by abrasive dust in the mud batching input grinding machine after acidifying, and particle fineness≤0.074 millimeter, the meal after abrasive dust is the mud finished product after acidifying.
3. the half-finished production method of mud after acidifying according to claim 1, is characterized in that, in the stirrer (1) input of the batching of mud mixture having been turned round, stir, mud mixture carries out acidification in stirring; (2) by the mud mixture after acidification, push as mud flap thickness≤3 millimeter of mud flap by twin rollers; (3) mud flap is transported to roasting in rotary type stoving oven, roasting time is 1～3 hour, and maturing temperature is controlled at 100～250 DEG C, mud flap water content≤15% after roasting, and the mud flap after roasting is the mud work in-process after acidifying.
4. the batching of mud mixture according to claim 3, it is characterized in that, the batching of mud mixture is made up of following component by weight percentage: the batching of mud mixture is made up of following component by weight percentage: mud 70～88%, attapulgite clay 8～25% and ferrous sulfate 0.1～5%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410237845.2A CN103979758B (en) | 2014-06-01 | 2014-06-01 | Mud after acidifying |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410237845.2A CN103979758B (en) | 2014-06-01 | 2014-06-01 | Mud after acidifying |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103979758A true CN103979758A (en) | 2014-08-13 |
| CN103979758B CN103979758B (en) | 2015-10-28 |
Family
ID=51271963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410237845.2A Active CN103979758B (en) | 2014-06-01 | 2014-06-01 | Mud after acidifying |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103979758B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06134500A (en) * | 1992-10-21 | 1994-05-17 | Nippon Steel Corp | Treatment of sludge |
| JP2006088051A (en) * | 2004-09-24 | 2006-04-06 | Shiyouzo Okawa | Production method of back filling material for piping work construction and back filling material for piping work construction |
| CN102875070A (en) * | 2012-08-25 | 2013-01-16 | 马鞍山豹龙新型建材有限公司 | Acetylene sludge aerated concrete block and preparation method thereof |
| CN103073166A (en) * | 2013-02-05 | 2013-05-01 | 上海市环境科学研究院 | Method for simultaneously stabilizing heavy metals and deeply dewatering municipal sludge for municipal sludge |
-
2014
- 2014-06-01 CN CN201410237845.2A patent/CN103979758B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06134500A (en) * | 1992-10-21 | 1994-05-17 | Nippon Steel Corp | Treatment of sludge |
| JP2006088051A (en) * | 2004-09-24 | 2006-04-06 | Shiyouzo Okawa | Production method of back filling material for piping work construction and back filling material for piping work construction |
| CN102875070A (en) * | 2012-08-25 | 2013-01-16 | 马鞍山豹龙新型建材有限公司 | Acetylene sludge aerated concrete block and preparation method thereof |
| CN103073166A (en) * | 2013-02-05 | 2013-05-01 | 上海市环境科学研究院 | Method for simultaneously stabilizing heavy metals and deeply dewatering municipal sludge for municipal sludge |
Non-Patent Citations (1)
| Title |
|---|
| 王月香: "污泥的固化稳定化技术综述", 《四川建筑科学研究》, vol. 37, no. 5, 25 October 2011 (2011-10-25), pages 206 - 210 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103979758B (en) | 2015-10-28 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: GUANGDONG HUABO ENTERPRISE MANAGEMENT CONSULTING C Free format text: FORMER OWNER: XU SHENGYING Effective date: 20150813 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150813 Address after: 510640, room 715-716, China Education building, No. five, 371-1 mountain road, Guangzhou, Guangdong, Tianhe District Applicant after: GUANGDONG HUABO ENTERPRISE MANAGEMENT CONSULTING Co.,Ltd. Address before: 211700 Huaian, Xuyi province Timor King international residential area, building 2, unit 202 room 18 Applicant before: Xu Shengying |
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| C41 | Transfer of patent application or patent right or utility model | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Jie Inventor before: Xu Shengying Inventor before: Xu Qinghua Inventor before: Jiang Wenlan Inventor before: Huang Yunjin Inventor before: Huang Feixiang Inventor before: Chen Liping |
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| COR | Change of bibliographic data | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150918 Address after: 402660 A2-14/01 block, Tongnan Industrial Park, Chongqing Applicant after: CHONGQING YU JI MACHINERY MANUFACTURING Co.,Ltd. Address before: 510640, room 715-716, China Education building, No. five, 371-1 mountain road, Guangzhou, Guangdong, Tianhe District Applicant before: GUANGDONG HUABO ENTERPRISE MANAGEMENT CONSULTING Co.,Ltd. |
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| C14 | Grant of patent or utility model | ||
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| TR01 | Transfer of patent right |
Effective date of registration: 20220507 Address after: Room 102, building 4, Yijingyuan, Mocheng, Yuecheng District, Shaoxing City, Zhejiang Province Patentee after: Zhu Bangjie Address before: 402660 plot a2-14 / 01, Tongnan Industrial Park, Chongqing Patentee before: CHONGQING YU JI MACHINERY MANUFACTURING Co.,Ltd. |
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Effective date of registration: 20220704 Address after: 312000 Room 302, building 1, Gaohe village, Binhai Industrial Zone, Ma'an street, Keqiao District, Shaoxing City, Zhejiang Province Patentee after: Shaoxing feiyuan Textile Co.,Ltd. Address before: Room 102, building 4, Yijingyuan, Mocheng, Yuecheng District, Shaoxing City, Zhejiang Province Patentee before: Zhu Bangjie |