CN105000815A - Method for synergistically treating heavy metal sludge in cement production - Google Patents
Method for synergistically treating heavy metal sludge in cement production Download PDFInfo
- Publication number
- CN105000815A CN105000815A CN201410155408.6A CN201410155408A CN105000815A CN 105000815 A CN105000815 A CN 105000815A CN 201410155408 A CN201410155408 A CN 201410155408A CN 105000815 A CN105000815 A CN 105000815A
- Authority
- CN
- China
- Prior art keywords
- cement
- heavy metal
- sewage sludge
- metal sewage
- mummification
- 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.)
- Pending
Links
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
- 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
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The present invention discloses a method for synergistically treating heavy metal sludge in cement production. The method comprises: (1) carrying out a drying pretreatment on heavy metal sludge so as to make the moisture content be less than or equal to 40 wt%; (2) mixing the obtained heavy metal sludge and a cement raw material to prepare a raw material for cement; and (3) after the raw material for cement is homogenize, firing into a cement clinker. According to the present invention, with the method, the harmless treatment of the sludge and the production of the cement clinker and the product thereof can be simultaneously achieves, such that the heavy metal sludge with characteristics of complex components and difficult recycling is completely digested, and the quality performance of the cement product is not affected.
Description
Technical field
The present invention relates to a kind of method for sludge treatment, particularly relate to a kind of method for sludge treatment containing heavy metal.
Background technology
Heavy metal wastewater thereby source is wide, kind is many, and its treatment process mainly can be summarized as chemical method, Physical, physico-chemical process and biochemical process.Take milk of lime as the chemical neutralization precipitator method of major pharmaceutical agent, because its operational path is ripe, cost for wastewater treatment is low, maintenance management is convenient, and level of automation high, at home and abroad be widely used, but consequent excess heavy metal sewage sludge always but is the Focal point and difficult point that corporate environment is administered.
For stainless steel cold-rolling pickling wastewater, cold rolling moisture content of the cake after two-stage chemical reduction, limestone vegetation, sludge condensation, filter press is 50 ~ 70%, the total metal oxide content such as Fe, Cr, Ni, Zn are 15 ~ 40%, the total content of calcium sulfate, Calcium Fluoride (Fluorspan) and calcium chloride is about 10 ~ 30%, and the content of other water soluble salts and impurity is about 5%.Heavy metal sewage sludge particle is comparatively thin, complicated component, Leaching are high, pollutant load fluctuation is large, and it is classified as Hazardous wastes (specifically can see National Hazard refuse register HW17 and HW21).If careless for heavy metal sewage sludge process, poisonous metal will be caused the secondary pollution at soil and water source.
In order to alleviate or eliminate the harm of heavy metal sewage sludge, recycle valuable resource wherein, avoid the secondary pollution in recycling process, in prior art field, also the disposal and utilization experience of favourable electroplating sludge, chromium-bearing sludge is cured/stabilization treatment to the mud containing heavy metal.Such as, publication No. is CN102514079A, and date of publication is on June 27th, 2012, and the Chinese patent literature that name is called " one realizes electroplating sludge stabilization, immobilized treatment process " discloses a kind for the treatment of process of electroplating sludge.Steps of the method are: under (1) 105 DEG C of temperature condition, electroplating sludge, after dewatered drying, grinds and sieving for standby; In (2) 25 ~ 50 DEG C of temperature ranges, above-mentioned electroplating sludge, stablizer, solidifying agent are pressed certainweight percentage mix, and adds a certain proportion of water, strong stirring in stirrer; (3) said mixture is carried out to molding, is solidified into building block; (4) block curing, air-dry.
In addition, publication No. is CN102583920A, and date of publication is on July 18th, 2012, and the Chinese patent literature that name is called " in stainless steel leftover bits and pieces mud temperature reduction harmless disposal method " relate to a kind for the treatment of process of chemical pollution thing.The step of this treatment process is: mud natural drying of first being got a foothold by stainless steel, makes the mass content of its moisture content be down to 35% ~ 45%; And then above-mentioned leftover bits and pieces mud is dried, make the moisture content mass content of stainless steel leftover bits and pieces mud be down to 5% ~ 10%; Add additive, reductive agent in the stainless steel leftover bits and pieces mud of drying again, and mix; Finally the stainless steel leftover bits and pieces mud after mixing is processed 2.0 ~ 2.5hr at 600 DEG C ~ 700 DEG C.
But method for sludge treatment used in the prior art (comprising the treatment process disclosed in above-mentioned patent documentation) also exists that volume is little, poor for applicability, heavy metal recovery rate is low, technical process is complicated to a certain extent, equipment investment or working cost is high, process energy consumption is high or easily cause secondary pollution problems.Therefore; for having a large capacity and a wide range, the heavy metal sewage sludge that coexists of hazardness and resource; there is no the large-scale treatment method that properly safety is economical and practical again at present; thus cause the waste of the Determination of multiple metal elements (such as chromium, nickel, iron and zinc etc.) in mud and Non-metallic components (such as Calcium Fluoride (Fluorspan), calcium sulfate, calcium carbonate, calcium chloride etc.) to be run off, the great wasting of resources and serious environmental pollution can be caused thus.
On the other hand, current have a lot of cement production enterprise to utilize dry method cement rotary kiln comprehensive treating process domestic sludge.Such as, publication number is CN1861532A, and publication date is on November 15th, 2006, and the Chinese patent literature that name is called " utilizing the method and apparatus of cement rotary kiln process municipal sludge " discloses a kind of method utilizing cement rotary kiln lignin-sludge.The method utilizes cement rotary kiln, a kind of calcining of the sludge silt containing calcium hydroxide is become calcium oxide products, and is re-used in the pre-treatment that water ratio is 70%-85% dehydrating municipal sludge mummification increasing calcium.But the method needs add the step that a high-temperature calcination prepares active calcium oxide on cement production process, and can produce a large amount of using waste heat from tail gas that can not be used effectively in calcination process.In addition, because the water content of municipal sludge is higher, so need by sludge dewatering to lower water content, the air-dry process of such dehydration can produce a large amount of equipment energy consumptions again.Therefore, the method for sludge treatment disclosed in above-mentioned patent documentation also exists complex process, drops into and increases and the shortcomings such as energy consumption height.
In sum, enterprise expectations can solve that volume existing for existing heavy metal sewage sludge process is little, poor for applicability, technical process is complicated, equipment investment or working cost is high, production process energy consumption is high or easily cause secondary pollution problems, effectively realizes the harmless treatment of heavy metal sewage sludge.
Summary of the invention
The object of the present invention is to provide a kind of method of associated treatment heavy metal sewage sludge in manufacture of cement, it can realize the production of the harmless treatment and cement clinker and products thereof of mud simultaneously, so both thoroughly digested complicated component and be difficult to recycle heavy metal sewage sludge, do not affect again the capability and performance of cement products.
In order to reach the object of foregoing invention, the invention provides a kind of method of associated treatment heavy metal sewage sludge in manufacture of cement, it comprises step has:
(1) heavy metal mud carries out mummification pre-treatment, makes its water ratio be down to below 40wt%;
(2) mix through the pretreated heavy metal sewage sludge of mummification with cement raw material with the proportioning accounting for cement raw material 1-10wt%, obtained cement slurry;
(3), after cement slurry homogenizing, fired as cement clinker.
For the problem existing for existing heavy metal sewage sludge treatment process, the method of associated treatment heavy metal sewage sludge in manufacture of cement of the present invention make use of the existing dry-process cement clinker production line of cement production enterprise, on the basis in conjunction with sludge components and Cement industry feature, heavy metal sewage sludge can be handled together while production cement clinker.
At present, cement production enterprise is handling object with domestic sludge usually, is added in cement raw material.But because the organic content in domestic sludge is high and water-content is large.In the process to the pre-mummification of mud and kiln calcining, a large amount of stenches can be produced because of organic decomposition and incineration, therefore, need to set up flue gas deodorization device toward contact, thus huge auxiliary facility can be brought for whole system, and cause expensive system operation cost.
Compared to domestic sludge, heavy metal sewage sludge is mainly based on inorganic componentss such as ferric oxide, calcium oxide, calcium sulfate, Calcium Fluoride (Fluorspan), and the gas produced in high-temperature burning process does not have a negative impact to environment substantially.Further, containing heavy metal element and fluorochemicals such as a certain amount of chromium, nickel, iron, zinc in heavy metal sewage sludge, and CaO, the Fe in heavy metal sewage sludge
2o
3content is also higher.Because the chemical composition in cement raw material also comprises CaO and Fe
2o
3, thus, the elements such as the calcium in heavy metal sewage sludge, iron as the important component of cement slurry, can be added in cement ingredient the synthesis participating in clinker mineral.In addition, some heavy metal objectionable impurities in mud (such as, chromium, nickel metal and fluorine element) can be solid-solution in clinker mineral structure and high-temperature liquid-phase (such as, the stable curing of objectionable impurities can be realized) in the lattice silicate tissue of cement slurry, such heavy metal objectionable impurities also finally can be solidified in cement clinker by cement slurry absorption, thus avoids the secondary pollution of harmful element in mud.
In the method for associated treatment heavy metal sewage sludge in manufacture of cement of the present invention, after the pre-treatment of heavy metal sludge drying, its water ratio is made to be down to≤40wt%, ensure that heavy metal sewage sludge mixes the mobility of rear overall material with cement raw material on the one hand, reduce the energy consumption of heavy metal sewage sludge degree of depth mummification on the other hand.
Usually, heavy metal sewage sludge, when without the need to optional equipment drying and other treatment, just can make the water ratio of himself drop to below 40wt% through the natural mummification of 20-40 days.
In addition, due to 1) heavy metal sewage sludge obtained by chemical precipitation, and its mud granule is very tiny; 2) in mud unreacted the calcareous material content such as lime is higher completely, reactive behavior is stronger; 3) elements such as the iron in mud and fluorine have mineralization, therefore, add the burn-ability that heavy metal sewage sludge can improve cement slurry significantly in cement slurry, are conducive to burning till of cement clinker.Like this, in the technology and device situation not changing existing cement producing line, the calcination temperature of cement clinker then can be reduced to less than 1400 DEG C.Therefore, after adding heavy metal sewage sludge, can save and burn till hear rate, kiln system heat engineering state is stablized, and calcination operation is more easy to control.
Due to the cement clinker on dry-process cement clinker production line be all by homogenizing after raw material form through high temperature kiln calcination, the time of sinter leaching is longer, temperature is generally at about 1400 DEG C, and calcining kiln also has, and thermal capacity is large, stable conditions, atmosphere are the features such as high-temperature alkaline, like this can for effectively processing the environment that heavy metal sewage sludge provides suitable.
Further, in the method for associated treatment heavy metal sewage sludge in manufacture of cement of the present invention, drying is carried out to cement slurry.
Fire after cement slurry is carried out drying is burn till hear rate in order to what reduce cement clinker in calcination process.
Further, adopt in the method for above-mentioned associated treatment heavy metal sewage sludge in manufacture of cement and cement slurry fired the waste gas produced for cement clinker drying is carried out to cement slurry.
The waste gas produced by calcination of chamotte comes cement slurry dry, efficiently utilizes the using waste heat from tail gas of directly discharge originally, saves the energy consumption for drying needed for cement slurry.The drying of such cement slurry and the waste gas recovery of calcination of cement clinker define a benign cycle, thus realize the object of energy-saving and emission-reduction.
In addition, the waste gas heavy metal mud that cement clinker also can be utilized to produce carries out mummification pre-treatment, thus reduces the overall energy consumption of system further.
Further, in the method for associated treatment heavy metal sewage sludge in manufacture of cement of the present invention, above-mentioned heavy metal sewage sludge is from one or more in the by product of iron and steel, chemical industry, petrochemical industry, coloured, plating, nonferrous metallurgy, intermetallic composite coating, machine industry milk of lime-chemical precipitation art breading heavy metal wastewater thereby.
It should be noted that, because the source of heavy metal sewage sludge is relatively extensive, therefore, its chemical composition is also different, and the chemical composition ranges sometimes coming from the heavy metal sewage sludge of same manufacturing enterprise also has variation by a relatively large margin.In the method for above-mentioned associated treatment heavy metal sewage sludge in manufacture of cement, can based on the conventional formulation of cement slurry, assign to adjust the component ratio such as Wingdale, clay according to the one-tenth of heavy metal sewage sludge, to prepare suitable cement slurry, thus make cement clinker meet its qualitative performance requirements.
Further, in the method for associated treatment heavy metal sewage sludge in manufacture of cement of the present invention, the water ratio of above-mentioned heavy metal sewage sludge is 50-70wt%.
Further, in the method for associated treatment heavy metal sewage sludge in manufacture of cement of the present invention, in step (1), adopt nature mummification, solar energy desiccation, disc dryer mummification, rotating cylinder/rotary dryer mummification, the mummification of film type drying machine and paddle-dryer mummification at least one of them carries out mummification pre-treatment.
In order to enhance productivity, also mummification pre-treatment can be carried out by drying equipment heavy metal mud.
Further, in the method for associated treatment heavy metal sewage sludge in manufacture of cement of the present invention, in step (2), mix in the Vertical Mill joined for manufacture of cement through the pretreated heavy metal sewage sludge of mummification with cement raw material.
On dry-process cement clinker production line, in order to improve production line Vertical Mill in the mobility of cement ingredient and stability, usually can be provided with waterworks.In technique scheme, after heavy metal sewage sludge higher for water content is added Vertical Mill, not only reduce the energy consumption of sludge deep mummification, also reduce the required injection flow rate sprayed of Vertical Mill.
Compared with the method for existing process heavy metal sewage sludge; the method of associated treatment heavy metal sewage sludge in manufacture of cement of the present invention utilizes ripe dry-process cement clinker production line to realize the production of cement clinker and the process of heavy metal sewage sludge; when not changing the capability and performance of cement clinker; fully digest environmentally harmful heavy metal sewage sludge, reach the double benefit of optimizing network resource utilization and environment protection.
In addition, the method of associated treatment heavy metal sewage sludge in manufacture of cement of the present invention, effective utilization of objectionable constituent or element in heavy metal sewage sludge is achieved in the process preparing cement clinker, while objectionable constituent or element are fixed on cement clinker, also make the working order of burning clinker of cement more stable, calcination operation is more easy to operate.
In addition, the method for associated treatment heavy metal sewage sludge in manufacture of cement of the present invention, advantageously can also reclaim the waste heat waste gas using clinker burning, save the overall energy consumption of system, reach the object of " treatment of wastes with processes of wastes against one another ".
In addition, owing to make use of existing dry-process cement clinker production line, the mud handling capacity of the method for associated treatment heavy metal sewage sludge in manufacture of cement of the present invention is large, and system input cost is low, treatment effect good and be easy to large-scale production process.
Embodiment
Be described further according to the method for specific embodiment to associated treatment heavy metal sewage sludge in manufacture of cement of the present invention below, but this explanation does not form improper restriction to technical scheme of the present invention.
Embodiment 1-6
The method of associated treatment heavy metal sewage sludge in manufacture of cement is applied to three kinds of different heavy metal sewage sludge process, its step comprises:
(1) natural mummification or utilize drying equipment to carry out mummification pre-treatment to the heavy metal sewage sludge (its water content is 50-70wt%) coming from three different manufacturing enterprises respectively, makes its water ratio be down to below 40wt%;
(2) add in cement slurry by pretreated for mummification heavy metal sewage sludge, it adds the 1-10wt% that proportioning accounts for cement raw material, and heavy metal sewage sludge fully mixes in Vertical Mill with cement raw material, and mixture makes cement slurry after levigate;
(3) after cement slurry homogenizing, send into calcination system, fired as cement clinker, the waste heat waste gas produced is passed in the Vertical Mill of step (2), drying is carried out to cement slurry after calcining.
It should be noted that, in order to ensure mobility and the stability of mixture, jet apparatus can be adopted suitably to spray water to mixture.
Relevant design parameter in the method for above-mentioned associated treatment heavy metal sewage sludge in manufacture of cement is as shown in table 1, and the leaching concentration that the corresponding harmful element in the cement clinker made detects after identification experiment is as shown in table 2.
Utilize existing dry-process cement clinker production line, adopt the method for embodiment 1-3 to produce and make stable performance, colory cement products, the property indices of the cement clinker obtained after adding heavy metal sewage sludge all meets concerned countries standard.
The processing parameter of table 1. method of associated treatment heavy metal sewage sludge in manufacture of cement
Table 2. is by the leaching concentration (mg/L) of the harmful element in the cement clinker made by embodiment 1-3
Element | Ni | Cr | Cu | Zn | Pb | Ag | Hg | As | Se | Cd |
Embodiment 1 | 0.05 | 0.82 | ND | 0.51 | 0.12 | ND | ND | ND | ND | 0.02 |
Embodiment 2 | 0.08 | 1.55 | ND | 0.32 | ND | ND | ND | ND | ND | 0.03 |
Embodiment 3 | 0.15 | 0.86 | ND | 1.25 | 0.05 | ND | ND | 0.10 | ND | ND |
Embodiment 4 | 0.01 | 1.05 | ND | ND | 0.05 | ND | ND | ND | ND | 1.25 |
Embodiment 5 | ND | 1.55 | 5.25 | 0.01 | ND | ND | ND | ND | ND | ND |
Embodiment 6 | 0.82 | 2.21 | 1.2 | 2.54 | 2.64 | 0.82 | ND | ND | ND | 0.58 |
GB limit value | 5 | 15 | 100 | 100 | 5 | 5 | 0.1 | 5 | 1 | 5 |
* remarks: ND-does not detect.
As can be seen from Table 1, the leaching concentration of the harmful element in the cement clinker made by embodiment 1-3 is far below the Leaching standard value (GB5085.3-2007 of concerned countries prescribed by standard, " Hazardous wastes judging standard leaching characteristic identification "), some harmful element does not even detect in identification experiment, therefore, make in the process of cement clinker associated treatment heavy metal sewage sludge in high-temperature calcination, metal in heavy metal sewage sludge and nonmetal objectionable impurities are solidified effectively in cement clinker and and products thereof in, achieve the harmless treatment of dangerous element in mud on the one hand, the capability and performance of cement clinker is not affected on the other hand yet.
It should be noted that above cited embodiment is only specific embodiments of the invention.Obvious the present invention is not limited to above embodiment, and the similar change thereupon made or distortion are that those skilled in the art can directly draw from content disclosed by the invention or be easy to just associate, and all should belong to protection scope of the present invention.
Claims (7)
1. the method for associated treatment heavy metal sewage sludge in manufacture of cement, is characterized in that, comprise step:
(1) heavy metal mud carries out mummification pre-treatment, makes its water ratio be down to below 40wt%;
(2) mix through the pretreated heavy metal sewage sludge of mummification with cement raw material with the proportioning accounting for cement raw material 1-10wt%, obtained cement slurry;
(3), after cement slurry homogenizing, fired as cement clinker.
2. the method for associated treatment heavy metal sewage sludge in manufacture of cement as claimed in claim 1, is characterized in that, carry out drying to cement slurry.
3. the method for associated treatment heavy metal sewage sludge in manufacture of cement as claimed in claim 2, is characterized in that, adopts cement slurry to be fired the waste gas produced for cement clinker and carry out drying to cement slurry.
4. the method for associated treatment heavy metal sewage sludge in manufacture of cement as claimed in claim 1, it is characterized in that, described heavy metal sewage sludge is from one or more in the by product of iron and steel, chemical industry, petrochemical industry, coloured, plating, nonferrous metallurgy, intermetallic composite coating, machine industry milk of lime-chemical precipitation art breading heavy metal wastewater thereby.
5. the method for associated treatment heavy metal sewage sludge in manufacture of cement as claimed in claim 1, it is characterized in that, the water ratio of described heavy metal sewage sludge is 50-70wt%.
6. the method for associated treatment heavy metal sewage sludge in manufacture of cement as claimed in claim 1, it is characterized in that, in described step (1), adopt nature mummification, solar energy desiccation, disc dryer mummification, rotating cylinder/rotary dryer mummification, the mummification of film type drying machine and paddle-dryer mummification at least one of them carries out mummification pre-treatment.
7. the method for associated treatment heavy metal sewage sludge in manufacture of cement as claimed in claim 1, is characterized in that, in described step (2), mix in the Vertical Mill joined for manufacture of cement through the pretreated heavy metal sewage sludge of mummification with cement raw material.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410155408.6A CN105000815A (en) | 2014-04-17 | 2014-04-17 | Method for synergistically treating heavy metal sludge in cement production |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201410155408.6A CN105000815A (en) | 2014-04-17 | 2014-04-17 | Method for synergistically treating heavy metal sludge in cement production |
Publications (1)
Publication Number | Publication Date |
---|---|
CN105000815A true CN105000815A (en) | 2015-10-28 |
Family
ID=54373734
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201410155408.6A Pending CN105000815A (en) | 2014-04-17 | 2014-04-17 | Method for synergistically treating heavy metal sludge in cement production |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN105000815A (en) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106186747A (en) * | 2016-06-30 | 2016-12-07 | 浙江新业管桩有限公司 | A kind of method utilizing printing and dyeing sludge to prepare high strength clinker |
CN106186746A (en) * | 2016-06-30 | 2016-12-07 | 浙江新业管桩有限公司 | A kind of method utilizing printing and dyeing sludge to prepare clinker |
CN106495511A (en) * | 2016-09-20 | 2017-03-15 | 南京工业大学 | Process for preparing cementing material by using electroplating sludge |
CN107840587A (en) * | 2017-11-16 | 2018-03-27 | 河南工程学院 | A kind of method of efficiently fixed heavy metals in city sewage sludge lead |
CN109879616A (en) * | 2019-03-25 | 2019-06-14 | 浙江红狮环保股份有限公司 | A kind of method of cement kiln synergic processing waste containing chromium |
CN113233800A (en) * | 2021-04-30 | 2021-08-10 | 宁波大学 | Application of heavy metal sludge high-temperature treatment slag charge and modified magnesium oxysulfate cement containing slag charge |
CN115626785A (en) * | 2022-10-31 | 2023-01-20 | 北京工业大学 | Method for fixing heavy metal zinc |
CN116375368A (en) * | 2023-03-23 | 2023-07-04 | 浙江红狮环保股份有限公司 | Method for cooperatively disposing electroplating waste liquid by cement kiln |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5637183B2 (en) * | 1978-09-28 | 1981-08-29 | ||
CN101376573A (en) * | 2007-08-30 | 2009-03-04 | 郑州大学 | Method for recycling sludge of sewage plant to produce cement |
CN101580346A (en) * | 2009-06-29 | 2009-11-18 | 浙江大学 | Method for cooperatively processing sludge in the cement production |
CN101607794A (en) * | 2009-07-14 | 2009-12-23 | 北京中科清水科技有限公司 | Utilize leather-making mud to produce the method for cement |
CN102531429A (en) * | 2012-01-16 | 2012-07-04 | 郑慧 | Method for synergetically treating fluorine-containing sludge in cement kiln |
-
2014
- 2014-04-17 CN CN201410155408.6A patent/CN105000815A/en active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5637183B2 (en) * | 1978-09-28 | 1981-08-29 | ||
CN101376573A (en) * | 2007-08-30 | 2009-03-04 | 郑州大学 | Method for recycling sludge of sewage plant to produce cement |
CN101580346A (en) * | 2009-06-29 | 2009-11-18 | 浙江大学 | Method for cooperatively processing sludge in the cement production |
CN101607794A (en) * | 2009-07-14 | 2009-12-23 | 北京中科清水科技有限公司 | Utilize leather-making mud to produce the method for cement |
CN102531429A (en) * | 2012-01-16 | 2012-07-04 | 郑慧 | Method for synergetically treating fluorine-containing sludge in cement kiln |
Non-Patent Citations (2)
Title |
---|
张坤等: "利用石灰干化污泥制备水泥对水泥性能的影响", 《北京科技大学学报》 * |
徐强: "《污泥处理处置新技术、新工艺、新设备》", 30 June 2011 * |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN106186747A (en) * | 2016-06-30 | 2016-12-07 | 浙江新业管桩有限公司 | A kind of method utilizing printing and dyeing sludge to prepare high strength clinker |
CN106186746A (en) * | 2016-06-30 | 2016-12-07 | 浙江新业管桩有限公司 | A kind of method utilizing printing and dyeing sludge to prepare clinker |
CN106495511A (en) * | 2016-09-20 | 2017-03-15 | 南京工业大学 | Process for preparing cementing material by using electroplating sludge |
CN106495511B (en) * | 2016-09-20 | 2018-11-13 | 南京工业大学 | Process for preparing cementing material by using electroplating sludge |
CN107840587A (en) * | 2017-11-16 | 2018-03-27 | 河南工程学院 | A kind of method of efficiently fixed heavy metals in city sewage sludge lead |
CN107840587B (en) * | 2017-11-16 | 2020-04-17 | 河南工程学院 | Method for efficiently fixing heavy metal lead in municipal sludge |
CN109879616A (en) * | 2019-03-25 | 2019-06-14 | 浙江红狮环保股份有限公司 | A kind of method of cement kiln synergic processing waste containing chromium |
CN113233800A (en) * | 2021-04-30 | 2021-08-10 | 宁波大学 | Application of heavy metal sludge high-temperature treatment slag charge and modified magnesium oxysulfate cement containing slag charge |
CN115626785A (en) * | 2022-10-31 | 2023-01-20 | 北京工业大学 | Method for fixing heavy metal zinc |
CN115626785B (en) * | 2022-10-31 | 2023-10-31 | 北京工业大学 | Method for fixing heavy metal zinc |
CN116375368A (en) * | 2023-03-23 | 2023-07-04 | 浙江红狮环保股份有限公司 | Method for cooperatively disposing electroplating waste liquid by cement kiln |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN105000815A (en) | Method for synergistically treating heavy metal sludge in cement production | |
CN101817650B (en) | Method for treating incinerated fly ash of domestic garbage with cooperation of cement kiln | |
CN107129129B (en) | Zeolite-modified sludge deep dehydration high-efficiency conditioner and preparation method thereof | |
CN103896505B (en) | A kind of method of feeding mode regulation and control of cement kiln synergic processing lime mummification municipal sludge | |
CN103011738B (en) | Curing method of copper sludge | |
CN104261652B (en) | High-effective sludge dehydration flocculation agent | |
CN104607434B (en) | One way of life incineration of refuse flyash curing | |
CN106904924A (en) | The system and method for 3D printing material is built using municipal waste and Industrial Solid Waste | |
CN106830722B (en) | Organic wastewater cooperates with the system and method for Industrial Solid Waste preparation ultrahigh water filler | |
CN101603346A (en) | A kind of sludge brick and preparation method thereof | |
CN109851265B (en) | Sludge residue soil-based ceramsite with adjustable pores and preparation method thereof | |
CN102070352A (en) | Method for recycling dewatered sludge, channel sediment and fly ash | |
CN1331796C (en) | Process for producing building cement by domestic refuse incinerated slag | |
CN106746802A (en) | The system and method for sulphate aluminium cement is prepared using municipal waste and Industrial Solid Waste | |
CN108101511A (en) | A kind of heavy metal pollution earth cooperation flying ash prepares the microwave sintering method of haydite | |
CN103524014A (en) | Harmless treatment method of fly ash | |
CN109336638A (en) | A method of using printing and dyeing sludge and waterglass alkaline residue coordinate system for haydite | |
CN105236707A (en) | Sewage treatment plant waste mud immobilization agent, and preparation method and application thereof | |
CN107698182A (en) | A kind of dirty mud environment protection type binder materials and preparation method thereof | |
CN104961324A (en) | Sludge conditioner before sludge incineration and application thereof | |
CN103011544A (en) | Method for deeply dehydrating sludge by utilizing cullet | |
CN111995306A (en) | Non-fired ceramsite based on urban river sludge and regenerated garbage and preparation method thereof | |
CN111620539A (en) | Deep dehydration tempering method for sludge | |
CN103553466B (en) | FGD desulphurize fly ash solidifying agent and preparation method thereof | |
CN101665278A (en) | Compound phosphorus removal flocculating agent for water treatment |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C06 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
WD01 | Invention patent application deemed withdrawn after publication | ||
WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151028 |