CN104355674A - Method for sintering porous ceramic material by city sludge - Google Patents
Method for sintering porous ceramic material by city sludge Download PDFInfo
- Publication number
- CN104355674A CN104355674A CN201410576279.8A CN201410576279A CN104355674A CN 104355674 A CN104355674 A CN 104355674A CN 201410576279 A CN201410576279 A CN 201410576279A CN 104355674 A CN104355674 A CN 104355674A
- Authority
- CN
- China
- Prior art keywords
- municipal sludge
- clay
- method utilizing
- pore
- firing
- 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
- Y02P40/60—Production of ceramic materials or ceramic elements, e.g. substitution of clay or shale by alternative raw materials, e.g. ashes
Landscapes
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a method for sintering a porous ceramic material by city sludge. The method comprises the following steps: (1) mixing, namely pre-treating clay, the city sludge and a hole former, performing secondary treatment on the pre-treated city sludge, and mixing the pre-treated clay and hole former and the city sludge subjected to secondary treatment according to a certain ratio to obtain a mixture, wherein the mixture comprises 50-80 parts by weight of the clay, 20-50 parts by weight of the city sludge and 5%-20% of the hole former based on the total weight of the clay and the city sludge; (2) performing coarse pugging, ageing, pugging, forming, drying and sintering on the mixture in sequence to obtain the finished porous ceramic material. According to the method, the city sludge is high in utilization rate, safe and non-toxic, and the prepared porous ceramic is good in compressive strength and relatively low in heat conduction coefficient.
Description
Technical field
The invention belongs to mud reutilization technology field, particularly a kind of method utilizing the firing porous stupalith of municipal sludge.
Background technology
As the kidney of modern city, sewage work is purified water source not only, also creates municipal sludge.Municipal sludge safe handling is a kind of useful resource, can obtain good economic benefit in fields such as building materials, agricultural, the energy, biologies; Dealing with improperly producing serious consequence, causing the secondary pollution that heavy metal accumulation, atmospheric pollution etc. are severe.Usually, the recycle of municipal sludge needs to reach the most basic following requirement: minimizing, and municipal sludge water ratio is loose compared with high, volume, floor space large, adopts the mode of Conventional transport to need higher transportation cost.By the process of this step of decrement, effectively can deduct the moisture content contained by mud, reduction volume, facilitates long-distance transportation and recycling treatment; Stabilization and innoxious, the composition of mud is complicated, containing many pathogenic hydrocarbon organism, virus, bacterium and heavy metal etc., easily threatens human health and environment protection.And mud composition easily changes with the change in area.When mud is banked up, can discharge the toxic substance such as dioxin, hydrogen sulfide, contaminate environment works the mischief.
Guangxi is the Eleventh Five-Year Plan period newly-built 69 sewage works, municipal sewage treatment total amount rapidly increases to 405.4 ten thousand m
3/ d, the solid waste municipal sludge that Sewage Plant produces, will become after sewage disposal, another hang-up emerging in environment protection.Municipal sludge complicated components, containing a large amount of malignant bacteria, virus and heavy metal, and its water ratio is high is not easy to long-distance transportation.For Nanning City, raw waste water processing power is about 440,000 m
3/ d, after enlarging and technological transformation, sewage disposal total capacity reaches 800,000 m
3/ d, accounts for 0.3 ~ 0.5% of sewage ratio in mud, the mud increased thus can reach 0.8 ~ 1.6 ten thousand m
3/ d.The original treatment measures such as producing organic fertilizer from sludge, sanitary landfill that utilize in this city are difficult to satisfy the demand, study further recycling sludge, stabilization, safe Land use systems extremely urgent.
Mud forms basal component by elements such as silicon, aluminium, potassium, calcium, oxygen, but also there is a small amount of heavy metal such as copper, zinc, nickel and some morbid substances, and these objectionable impuritiess become the major obstacle that restriction sludge circulation utilizes just.The research of utilization of current mud mainly concentrates on farm land compost and New Building Materials research and development, and traditional throwing sea, sanitary landfill are because soil is deficient and serious secondary pollution is more and more restricted.Agricultural use mainly uses mud as a kind of organic chemical fertilizer, the mud through compost treatment contains plant nutrition and a small amount of mineral substance, suitably for agriculture production, can significantly improve the yield and quality of crop.But in recent years with the development of detection technique, agricultural sludge is easily subject to the impact of heavy metal.It is the focus that current recycling sludge is studied that building materials utilize, mainly concentrate on the fields such as brickmaking, cement, haydite, technology mode has directly utilization and utilizes after burning, this method of disposal can deal carefully with the objectionable impurities in mud, such as cause a disease organism, bacterium and heavy metal etc., weak point is that the volume of mud is low, consume mass energy, releases the oxynitride of aggravation Greenhouse effect during high temperature.
Porous ceramic film material refers to that material has higher physical strength, chemical stability, dimensional stability and the performance such as corrosion-resistant, high temperature resistant, has again the type material of the thermal conductivity that porous material hole ratio is high, density is low, lower.Stupalith general density after oversintering is comparatively large, is difficult to the performance with light weight heat insulating, therefore needs the method taking artificial pore-creating, improve porosity, reduce density, stupalith is combined with the superior heat insulation and preservation effect of porous material.The common pore-creating technique of ceramic porous material has foam impregnation port-creating method, adds pore-forming material port-creating method, sintering port-creating method and foaming port-creating method etc.
About the research utilizing municipal sludge to prepare porous ceramics, we find following periodical literature: " municipal sludge prepares the experimental study of porous ceramic filler ", Cheng Yue etc., Chinese pottery, the 47th volume the 9th phase, in September, 2011, the start-stop page number: 48-53 page.The document discloses with municipal sludge 12 ~ 20%, quartz 24 ~ 40%, coating wastewater flocculation sludge 20 ~ 30% for main raw material, coal 20 ~ 30% is pore-forming material, and maturing temperature is 1230 ~ 1250 DEG C, the firing porous ceramic packing of soaking time 30min.But the document still exists that we are above-mentioned mentions, the utilization ratio of municipal sludge is low, energy consumption is large.
Summary of the invention
The object of the invention is to solve the problems of the technologies described above, a kind of method utilizing the firing porous stupalith of municipal sludge is provided, the urban sludge utilization rate of the method is high, safety non-toxic, obtained porous ceramic film material have good ultimate compression strength and lower thermal conductivity.
For realizing object of the present invention, the invention provides following technical scheme:
Utilize a method for the firing porous stupalith of municipal sludge, comprise the steps:
(1) batch mixing: after first clay, municipal sludge and pore-forming material being carried out pre-treatment, then pretreated municipal sludge is carried out secondary treatment, again the municipal sludge after pretreated clay, pore-forming material and secondary treatment is mixed by a certain percentage, obtain compound; In described compound, the weight part that clay adds is 50 ~ 80 parts, and the weight part that municipal sludge adds is 20 ~ 50 parts, and the addition of pore-forming material is 5 ~ 20% of clay and municipal sludge gross weight;
(2) described compound is successively slightly practiced, old, pugging, shaping, dry, burn till after get product.
The above pore-forming material is any one or more mixtures in sawdust, coal dust and starch.
The above condition of burning till is: firing temperature 950 ~ 1050 DEG C, soaking time 60 ~ 120min.In this temperature range, quality is better, and temperature illustrates underburnt compared with the paler colour presented lower than test block when 950 DEG C.Firing temperature higher than when 1050 DEG C because the shrinking percentage of test block is excessive, easily there is the bad phenomenon such as distortion, cracking in test block.
The above municipal sludge pre-treatment, be municipal sludge is mixed with reodorant display 7 ~ 10 days after through being exposed to the sun, drying, grinding, cross 0.6mm sieve; Described reodorant is nitrocalcite.Concrete steps are: 1m
3composite sludge nitrocalcite 12 ~ 20kg, nitrocalcite water is mixed with the solution that mass percent is 40%, then with wet mud mix after, add a cover (or overlay film) and display 7 ~ 10 days,
The above secondary treatment, is first by pretreated partial sludge pre-burning 20 ~ 40min at 500 ~ 550 DEG C, then mixes by the weight ratio of 1:1 with the municipal sludge of non-pre-burning.Through pre-burning, originally a large amount of unstable components contained in mud are decomposed when pre-burning, volume stability increases, crack can not be produced because mud volume is too high at test block surface in pressing process, green body quality is caused to decline, and municipal sludge is through pre-burning, volume can be improved to 50%.When research finds that municipal sludge volume is greater than 50%, the plasticity number of pug declines obviously, and test block is difficult to shaping, poor water retention property during making, easy to crack, and comparatively multiple cracking appears in the rear surface of burning till especially, has a strong impact on the performance of stupalith.
The above time of slightly practicing is 1.5 ~ 2h, keeps compound water ratio 16 ~ 22%.
The above old time is 3 ~ 5 days.
The above pugging time is about 1h, keeps mixing pug moisture content 12 ~ 18%.Water ratio comparatively lower than 12% time, material base is easy-formation not, and surface easily occurs minute crack; And water ratio higher than 18% time, material base is easily crushed out of shape, and causes test block to ftracture during the demoulding.
The above is shaping, is pressure compression moulding mixing pug being used to 20 ~ 30MPa.Higher than the test block of 30MPa compacting, easily there is crackle in surface, with the test block that not easily press strengthi is higher again of the forming pressure lower than 20MPa, so suitable forming pressure is between 20 ~ 30MPa.
The above is dry, is after the base substrate natural air drying by compression moulding, at 100 ~ 110 DEG C, dry 10 ~ 12h.
The pre-treatment of the above clay and pore-forming material is the conventional treatment method of this area, namely drying, grinding, sieve.
Compared with prior art, beneficial effect of the present invention is:
1. urban sludge utilization rate of the present invention can reach 20 ~ 50%, substantially increases the utilization ratio of mud, meets the requirement of recycling economy.
2. the present invention is by carrying out the pre-treatment such as deodorizing, oven dry to municipal sludge, can reduce city sewage sludge reclamation and utilize in process the harm that environment produces.
3. the pore-forming material selected by the present invention, can improve porosity to 40 ~ 46% of pottery, reduces apparent density to 1.54 ~ 1.60gcm
-3, improve heat preservation and insulation.By the porous ceramics that the inventive method is obtained, there is good ultimate compression strength (10 ~ 15MPa), lower thermal conductivity (0.55 ~ 0.96W (m
-1k
-1)), and firing temperature of the present invention is lower, meets the requirement of save energy, therefore has very important application value.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to the scope represented by embodiment.
Municipal sludge used in embodiment, is made up of by 1:1 weight thinkling sound's east mud and south of the River mud.
Thinkling sound east mud takes from Lang Dong sewage work of Nanning City, this factory adopts second order activity sludge, by the precipitation process of two-stage settling tank, utilize the Decomposition of microorganism to degrade to the organic composition in city, the sewage source of process is mainly city domestic sewage and a small amount of industrial sewage.This sewage silt content compared with low, heavy metal and radioactive component few, fresh thinkling sound east mud is aterrimus, thick, and expose and become grey after about 15min in atmosphere, water ratio is between 32.4 ~ 37.3%, and PH is 7, and calorific value is 2076.1kJkg
-1.
South of the River mud comes from the south of the River, Nanning City sewage work, and organic content is lower than the eastern mud of thinkling sound, and color is more shallow, and water ratio is between 27.3 ~ 34.0%, and calorific value is 1524.0kJkg
-1, all lower than thinkling sound east mud, its PH is 7.
Two kinds of mud give out faint rotten odor in its natural state, and a small amount of mud piles up the dislike that can not cause people; But when being heated to 300 DEG C, a large amount of irritant gass can be released, causing serious atmospheric pollution.
The raw materials used chemical composition of the present invention detects as shown in table 1
Table 1 material chemical component
| Material name | Loss | SiO 2 | Al 2O 3 | Fe 2O 3 | CaO | MgO | Summation |
| Barren east mud | 46.33 | 30.75 | 10.79 | 5.01 | 2.26 | 2.83 | 97.97 |
| South of the River mud | 40.9 | 33.04 | 10.73 | 6.08 | 3.85 | 0.84 | 95.44 |
| Clay | 9.28 | 60.98 | 18.12 | 8.11 | 0.92 | 1.20 | 98.61 |
One, raw materials pretreatment
1. municipal sludge pre-treatment
Nitrocalcite consumption is 1m
3municipal sludge nitrocalcite 12 ~ 20kg, first nitrocalcite water is mixed with the solution that mass percent is 40%, then with municipal sludge mix after, add a cover after (overlay film) displays 3 days and check deodorizing effect, observe the color of mud and the change of other physicals.
Mud after above-mentioned process displays 7d again, is exposed to the sun under the sun, when moisture is down to 10%, continues bake drying at 105 DEG C.With ball mill to the mud grinding half hour of drying, cross 0.6mm sieve, add a cover preservation, as one of mud raw material.
2. clay pre-treatment: clay used is yellow-white, apparent density is 2.61gcm
-3, at 105 DEG C after drying, grinding 30min, crosses 0.6mm sieve, as raw clay.
3. pore-forming material mainly contains sawdust, coal dust and starch.Sawdust buying, from wood-working factory, after buying, is first dried, then is used vibration mill grinding; Coal dust is hard coal; Starch is commercially available pure starch.After the dry grinding of all pore-forming materials, whole 0.6mm of mistake sieves, and then tests screen over-size with the sieve of 0.15mm, and wherein the screen over-size of starch, coal dust, sawdust is for being followed successively by 10.3%, 35.8%, 70.6%.
Two, prepare
1. batch mixing: first clay, municipal sludge and pore-forming material are carried out pre-treatment, then carries out secondary treatment by pretreated municipal sludge, then is mixed by a certain percentage by the municipal sludge after pretreated clay, pore-forming material and secondary treatment, obtains compound; In compound, the weight part that clay adds is 50 ~ 80 parts, and the weight part that municipal sludge adds is 20 ~ 50 parts, and the addition of pore-forming material is 5 ~ 20% of clay and municipal sludge gross weight;
2. slightly white silk: various raw material is poured in mixer, is first dry mixed about 30min, and then the water adding the heavy 16-22% of dry blend proceeds to stir 1.5-2h.
3. old: to build putting into pond through the thick compound practiced, old 3-5 days.
4. pugging: take out old after compound again pugging 1h obtain the pug that mixes, period keeps mixing pug moisture content between 12 ~ 18%.In pugging process, with the increase of mud volume, compound keeps the good also corresponding increase of the moisture needed for plasticity-.
5. shaping: pressure compression moulding mixing pug being used to 20 ~ 30MPa.
6. dry: after the base substrate natural air drying after compression moulding to surface whiting, under being placed in 100-110 DEG C of temperature, to dry 10 ~ 12h.
7. burn till: by dried test block roasting at temperature 950 ~ 1050 DEG C, insulation 60 ~ 120min, gets product.
8. secondary treatment: first partly through the pretreated municipal sludge of deodorizing pre-burning 20 ~ 40min at 500 ~ 550 DEG C, then will mix by the weight ratio of 1:1 with the municipal sludge of non-pre-burning.
According to step 1-8 preparation, embodiment concrete scheme is as shown in table 2 below:
Table 2 embodiment concrete scheme
Three, Product checking
Product checking result, as shown in table 3.
Table 3 embodiment result
Deodorizing contrast experiment
(1) with copper sulfate and potassium permanganate process
By ferric sulfate and copper sulfate (part by weight by 2:1) water-soluble, be mixed with the treatment solution that mass concentration is 1.5%; Treatment solution 10ml is added in 10g wets mud (surface is overflowed without obvious liquid water), mix (if bad stirring can increase water consumption), add a cover (or overlay film), display 24h, 48h, check deodorizing effect after 72h, observe the change of mud color and other physicalies.
(2) ca nitrate soln process is used
1m
3wet mud about uses nitrocalcite 12-20kg, first nitrocalcite water is mixed with the solution that mass percent is 40%, then with wet mud mix after, add a cover (overlay film) and display 24h, check deodorizing effect after 48h, 72h, observe the color of mud and the change of other physicals.
(3) biological deodorant
1000g coal is put into reactor, add water 4000g and 85g sodium hydroxide, pH value controls between 9 ~ 11, after about 90 DEG C (must not more than 130 DEG C) reaction 60min, put into settling tank natural sedimentation, measure humic acids content after 5d and meet the requirements, be greater than 50%) after, carry out drying, obtain black powder Sodium salts humic acids reodorant, packed preservation.Get this reodorant and water and be mixed with deodorant liquid by weight 1:100, spray or puddle deodorizing in mud by a certain percentage, observe the color of mud and the change of other physical properties.
Whether the mud after above-mentioned process displays 7d, still have foul smell overflow by inspection in 300 DEG C of drying courses, makes the effect analysis after the effusion evaluation of severity and deodorizing, is qualitative subjective description.The evaluation of deodorizing effect mainly comprises the temperature, time length, the intensity that start to produce irritant gas and eliminates temperature etc., again in conjunction with the sensation of human body, provide 1 ~ 5 grade respectively, more the bright air pollution degree of multilist is higher for pore number, and to be that smelly degree is the highest represent with 5 pores its empty sample.Result is as shown in table 4.
Effect assessment after table 4 deodorizing
| Treatment process | Result | Air smelly degree grade during calcination |
| Nitrocalcite | PH=6, greyish white brown | ● |
| Potassium permanganate | PH=5 puce | ●●●● |
| Biotype | PH=7, beige | ●● |
| Copper sulfate and ferric sulfate | PH=4, blue brown | ●● |
| Blank | PH=7, beige | ●●●●● |
As seen from the above table, the deodorizing effect of nitrocalcite is best, and be secondly copper sulfate and ferric sulfate mixed solution and biotype reodorant, the poorest is potassium permanganate.So the nitrocalcite deodorizing effect selected by the present invention is best.
The interpolation contrast experiment of pore-forming material
Embodiment 5 and the formula not adding pore-forming material are contrasted, other experiment condition is identical, and the data obtained are as table 5:
Table 5 embodiment 5 carries out comparing result with the formula not adding pore-forming material
As shown in Table 5, when the weight ratio of mud/clay is 40/60, thermal conductivity when not mixing pore-forming material is 1.32/W (m
-1k
-1), adding of visible pore-forming material effectively can reduce thermal conductivity, improves the thermal and insulating performance of material.
The type contrast experiment of pore-forming material
Adopt different pore-forming materials: when sawdust and starch (embodiment 1), sawdust, starch, coal volume are 10%, carry out Experimental comparison, other experiment condition is with embodiment 1.Detected result is as table 6.
The Comparative result of different pore-forming material mixed by table 6
As can be seen from Table 6, it is to prepare excellent ceramic porous material that the present invention adds sawdust, starch, coal and composition thereof, especially when interpolation sawdust and starch mixing are as pore-forming material, ultimate compression strength, porosity are all improved, apparent density is decreased, illustrates that mixing of sawdust and starch compound makes the contact between blank keep to some extent and hole that sawdust stays in thermal histories effectively can make that porosity increases, apparent density declines.And the cohesive action of starch can promote physical-chemical reaction between particulate, improve intensity.
Claims (10)
1. utilize a method for the firing porous stupalith of municipal sludge, it is characterized in that, comprise the steps:
(1) batch mixing: first clay, municipal sludge and pore-forming material are carried out pre-treatment, then pretreated municipal sludge is carried out secondary treatment, again the municipal sludge after pretreated clay, pore-forming material and secondary treatment is mixed by a certain percentage, obtain compound; In described compound, the weight part that clay adds is 50 ~ 80 parts, and the weight part that municipal sludge adds is 20 ~ 50 parts, and the addition of pore-forming material is 5 ~ 20% of clay and municipal sludge gross weight;
(2) described compound is successively slightly practiced, old, pugging, shaping, dry, burn till after get product.
2. the method utilizing the firing porous stupalith of municipal sludge according to claim 1, is characterized in that: described pore-forming material is any one or more mixtures in sawdust, coal dust and starch.
3. the method utilizing the firing porous stupalith of municipal sludge according to claim 1, is characterized in that: described in the condition of burning till be: firing temperature 950 ~ 1050 DEG C, soaking time 60 ~ 120min.
4. the method utilizing the firing porous stupalith of municipal sludge according to claim 1, is characterized in that: described municipal sludge pre-treatment, be municipal sludge is mixed with reodorant display 7 ~ 10 days after be exposed to the sun, dry, grinding, cross 0.6mm and sieve; Described reodorant is nitrocalcite.
5. the method utilizing the firing porous stupalith of municipal sludge according to claim 1, it is characterized in that: described secondary treatment, be first by pretreated urban mud pre-burning 20 ~ 40min at 500 ~ 550 DEG C, then mix by the weight ratio of 1:1 with the municipal sludge of non-pre-burning.
6. the method utilizing the firing porous stupalith of municipal sludge according to claim 1, is characterized in that: the time of described thick white silk is 1.5 ~ 2h, keeps compound water ratio 16 ~ 22%.
7. the method utilizing the firing porous stupalith of municipal sludge according to claim 1, is characterized in that: the described old time is 3 ~ 5 days.
8. the method utilizing the firing porous stupalith of municipal sludge according to claim 1, is characterized in that: the described pugging time is about 1h, keeps mixing pug moisture content 12 ~ 18%.
9. the method utilizing the firing porous stupalith of municipal sludge according to claim 1, is characterized in that: described shaping, is pressure compression moulding compound being used to 20 ~ 30MPa.
10. the method utilizing the firing porous stupalith of municipal sludge according to claim 1, is characterized in that: described drying, is after the base substrate natural air drying by compression moulding, at 100 ~ 110 DEG C, dry 10 ~ 12h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410576279.8A CN104355674A (en) | 2014-10-24 | 2014-10-24 | Method for sintering porous ceramic material by city sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410576279.8A CN104355674A (en) | 2014-10-24 | 2014-10-24 | Method for sintering porous ceramic material by city sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104355674A true CN104355674A (en) | 2015-02-18 |
Family
ID=52523014
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410576279.8A Pending CN104355674A (en) | 2014-10-24 | 2014-10-24 | Method for sintering porous ceramic material by city sludge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104355674A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106365595A (en) * | 2016-08-25 | 2017-02-01 | 芜湖悠派护理用品科技股份有限公司 | Bio-sludge ceramsite cat litter and preparation method thereof |
| CN106867545A (en) * | 2017-02-23 | 2017-06-20 | 北京绿安创华环保科技股份有限公司 | A kind of saline-alkali soil restoration agent, preparation method and applications from sludge |
| CN107720948A (en) * | 2017-10-31 | 2018-02-23 | 沧源南华勐省糖业有限公司 | A kind of sugar production wastewater CASS activated sludge treatment methods |
| CN108408878A (en) * | 2018-04-28 | 2018-08-17 | 南京工程学院 | Biofilter filler and preparation method thereof |
| CN110407556A (en) * | 2019-08-05 | 2019-11-05 | 淮北市菲美得环保科技有限公司 | A kind of method and its application preparing high-strength light foam ceramic tile using municipal sludge |
| CN113233915A (en) * | 2021-05-18 | 2021-08-10 | 唐山钢铁集团有限责任公司 | Porous ceramic prepared by taking converter sludge as raw material and preparation method thereof |
| CN113292355A (en) * | 2021-04-20 | 2021-08-24 | 广西壮族自治区环境保护科学研究院 | Method for preparing ceramsite by using sludge of sewage treatment plant |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1830869A (en) * | 2006-03-22 | 2006-09-13 | 西安墙体材料研究设计院 | Sintered heat insulating hollow building block |
| CN101805105A (en) * | 2010-04-08 | 2010-08-18 | 宜兴市展宏环保设备有限公司 | Sludge treatment method |
-
2014
- 2014-10-24 CN CN201410576279.8A patent/CN104355674A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1830869A (en) * | 2006-03-22 | 2006-09-13 | 西安墙体材料研究设计院 | Sintered heat insulating hollow building block |
| CN101805105A (en) * | 2010-04-08 | 2010-08-18 | 宜兴市展宏环保设备有限公司 | Sludge treatment method |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106365595A (en) * | 2016-08-25 | 2017-02-01 | 芜湖悠派护理用品科技股份有限公司 | Bio-sludge ceramsite cat litter and preparation method thereof |
| CN106867545A (en) * | 2017-02-23 | 2017-06-20 | 北京绿安创华环保科技股份有限公司 | A kind of saline-alkali soil restoration agent, preparation method and applications from sludge |
| CN107720948A (en) * | 2017-10-31 | 2018-02-23 | 沧源南华勐省糖业有限公司 | A kind of sugar production wastewater CASS activated sludge treatment methods |
| CN108408878A (en) * | 2018-04-28 | 2018-08-17 | 南京工程学院 | Biofilter filler and preparation method thereof |
| CN110407556A (en) * | 2019-08-05 | 2019-11-05 | 淮北市菲美得环保科技有限公司 | A kind of method and its application preparing high-strength light foam ceramic tile using municipal sludge |
| CN113292355A (en) * | 2021-04-20 | 2021-08-24 | 广西壮族自治区环境保护科学研究院 | Method for preparing ceramsite by using sludge of sewage treatment plant |
| CN113233915A (en) * | 2021-05-18 | 2021-08-10 | 唐山钢铁集团有限责任公司 | Porous ceramic prepared by taking converter sludge as raw material and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104355674A (en) | Method for sintering porous ceramic material by city sludge | |
| Świerczek et al. | The potential of raw sewage sludge in construction industry–a review | |
| CN103387371B (en) | Composite curing agent for city sludge solidification/stabilization and application thereof | |
| CN107721455A (en) | A kind of haydite, its preparation method and application prepared by solid waste | |
| CN107602041B (en) | Sludge environment-friendly baking-free brick and preparation method thereof | |
| US20190247824A1 (en) | Ceramsite Produced by Using River/Lake/Sea Sludge and Seashell Powder as Raw Materials and Preparation Method Thereof | |
| WO2019051923A1 (en) | Iron-containing sludge pyrolysis residue-based sludge complex conditioning agent, preparation therefor and use thereof | |
| CN104261802B (en) | A kind of mud flyash high-strength ceramic granule and preparation method thereof | |
| CN106866066B (en) | Baking-free brick manufactured by treating municipal sludge through special soil stabilizer resource | |
| CN105693277A (en) | Iron-tailing porous material as microbial ceramsite filtering material, preparation method of iron-tailing porous material and application of iron-tailing porous material | |
| CN107324710A (en) | A kind of preparation method for the sludge organism charcoal water-permeable brick for possessing high absorption property | |
| CN104529396B (en) | A kind of method utilizing domestic sludge brickmaking | |
| CN102826818A (en) | Preparation method for bottom mud brick | |
| CN102070352A (en) | Method for recycling dewatered sludge, channel sediment and fly ash | |
| CN114394800B (en) | Method for resource utilization of sludge biochar | |
| CN106116508A (en) | A kind of method utilizing municipal sludge to produce anti-blocking sintering brick permeable to water for pore creating material | |
| CN102180607A (en) | Ultralight ceramsites and preparation method thereof | |
| CN105541372B (en) | The preparation method of water process ceramic grain filter | |
| CN105016643A (en) | Novel mineral powder produced by using sludge and preparation method of novel mineral powder | |
| CN102718378A (en) | Method of cement kiln co-processing for calcium-added and passivated town sludge | |
| CN103951298A (en) | Method for preparing titanium gypsum-based composite gel material and application of material in drying sludge | |
| CN112957927B (en) | Porous ceramic oil-water separation film taking red mud waste residues as raw materials and preparation method thereof | |
| WO2010020079A1 (en) | Sewage sludge cement and preparation thereof | |
| CN105540703A (en) | Composite efficient sewage treatment agent based on natural ore and preparing method thereof | |
| CN104129897B (en) | The dewatering process of one way of life mud |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150218 |