CN102731063A - Method for preparing ceramsite by water supply sludge and sewage sludge - Google Patents
Method for preparing ceramsite by water supply sludge and sewage sludge Download PDFInfo
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- CN102731063A CN102731063A CN2012102434044A CN201210243404A CN102731063A CN 102731063 A CN102731063 A CN 102731063A CN 2012102434044 A CN2012102434044 A CN 2012102434044A CN 201210243404 A CN201210243404 A CN 201210243404A CN 102731063 A CN102731063 A CN 102731063A
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Abstract
The invention discloses a method for preparing ceramsite by water supply sludge and sewage sludge, which relates to the method for preparing ceramsite for buildings. The invention is to solve the problem that current water supply sludge and sewage sludge influence the environment and cause damage. The method comprises the steps of: mixing the water supply sludge with the sewage sludge; then adding silicate substances and mixing; and finally placing the mixture in a comminutor to extrude and form, naturally drying, sintering and performing furnace cooling to obtain the ceramsite for buildings. The method for preparing ceramsite by water supply sludge and sewage sludge is used for building materials.
Description
Technical field
The present invention relates to haydite preparation method；The method that haydite is specifically prepared with copper water-supply pipe and sewage sludge.
Background technology
Copper water-supply pipe is made up of the solid matter in filter back washing draining and sedimentation basin or depositing reservoir spoil disposal water, and its total solids content is general between 0.1% ~ 2%.Filter back washing sludge is mainly made up of suspension species, clay, organic matter and chemical agent residue；Clarifier sludge can be divided into two kinds of lime softening sludge and chemical flocculation precipitation sludge, and softening sludge occurs mainly with the softening process of raw water, and main component is the softening reagent of calcium carbonate, magnesium hydroxide, organic matter and surplus；Chemical flocculation precipitation sludge is mainly made up of the suspension in raw water, colloidal substance, organic matter, microorganism and the water purification agent of addition and trace heavy metal element.
In copper water-supply pipe based on inorganic composition, organic content is less.According to the analysis shows to part water supply plant sewage and sludge composition, all elements of surface layer that water supply plant sewage and sludge are almost flowed through containing raw water and compound.With SiO in waterworks sludge2、Fe2O3、Al2O3、CaCO3It is Main Ingredients and Appearance etc. compound, in sludge in addition to the residue of coagulant, other compositions are mainly derived from the surface layer soil material that raw water is flowed through, and the experiment of combustible loss shows, the content of organic matter is generally in the range of 10% ~ 25% in the sludge of water supply plant.
Copper water-supply pipe contains substantial amounts of suspension, if a large amount of undressed copper water-supply pipes are directly discharged, it will produce the harm of the following aspects：（1）Substantial amounts of silt, suspension enter after water body in copper water-supply pipe, can cause Sediment Siltation, change original hydraulics of water body etc.;（2）The pollutants such as a large amount of suspensions, the organic matter that copper water-supply pipe contains can cause to discharge the pollution of water body.（3）Current most of water supply plants use aluminium salt as coagulant, and substantial amounts of aluminium sludge is discharged into water body, it will aquatile and benthon are constituted and endangered, so as to destroy the ecological balance of water body.（4）The unprocessed recovery of substantial amounts of Sludge water from waterworks and directly discharge, be also the huge waste of water resource.
With the development of World Economics, industrial wastewater, the discharge capacity of sanitary sewage increasingly increase, in order to preserve the ecological environment, protection the people it is healthy, improve quality of water environment, sewage have to pass through purified treatment it is up to standard after could discharge.Sewage can produce a number of sludge in processing procedure, and these moisture percentage in sewage sludge are high, and content of organics is high, easily rot smelly, if cannot effectively dispose, can have a strong impact on environmental quality, cause secondary pollution.How to deal carefully with and dispose these discarded objects, find economy, a reasonable, efficient Sludge Disposal Techniques, it has also become build complete municipal sewage plant, the key factor improved technical level with managerial skills；How by yield is huge, complicated component sewage sludge harmlessness, recycling, it has also become world environments circle depth is one of problem for attracting attention
In order to control water pollution and to realize sewage recycling, the handling rate for feedwater/sewage and processing requirement more and more higher both at home and abroad, the yield of copper water-supply pipe/sewage sludge is also increasing therewith.So that the problem of result in the secondary pollution environment of copper water-supply pipe/sewage sludge.Due to a large amount of discharges of industrial wastewater, cause to contain substantial amounts of heavy metal substance in sewage, heavy metal can be trapped in sludge after processing, so containing certain density heavy metal substance in sewage sludge, the recycling to sludge causes difficulty.
The content of the invention
The invention solves the problems that the problem of existing copper water-supply pipe and sewage sludge influence environment, caused harm；And propose a kind of method that haydite is prepared with copper water-supply pipe and sewage sludge.
A kind of method for preparing haydite using copper water-supply pipe and sewage sludge is carried out in the steps below：Copper water-supply pipe and sewage sludge are pressed（7/3~1.5）:1 mass ratio is mixed to get compound; add silicates material; the silicates material consumption is the 8% ~ 15% of mixture quality; mix; comminutor extrusion forming is subsequently placed in, is dried naturally, is heated up with 8 ~ 10 DEG C/min speed; then 25 ~ 35min, furnace cooling are incubated at 950 ~ 1000 DEG C；Obtain haydite.The loose volume weight of haydite is 550 ~ 750 kg/m after tested3, apparent particle density is 1050 ~ 1400 kg/m3, voidage be 41% ~ 53%, water absorption rate within 15%, cylindrical compress strength be 8 ~ 17 MPa, mud containing rate is 0.3% ~ 0.5%.
What a kind of method for preparing building porcelain granule using copper water-supply pipe and sewage sludge can also be carried out in the steps below：Sewage sludge and river bottom mud are pressed（7/3~1.5）:1 mass ratio is mixed to get compound; add silicates material; the silicates material consumption is the 8% ~ 15% of mixture quality, mixes, is subsequently placed in comminutor extrusion forming; naturally dry; heated up 200 DEG C with 8 ~ 10 DEG C/min speed, be incubated 10 min, 10min is then incubated at 550 DEG C with the heating of 8 ~ 10 DEG C/min speed; 10 min, furnace cooling are incubated at 950 ~ 1050 DEG C with the heating of 8 ~ 10 DEG C/min speed again；Obtain haydite.The loose volume weight of haydite is 550 ~ 750 kg/m after tested3, apparent particle density is 1050 ~ 1400 kg/m3, voidage be 41% ~ 53%, water absorption rate within 15%, cylindrical compress strength be 8 ~ 17 MPa, mud containing rate is 0.3% ~ 0.5%.
It is that haydite prepared by primary raw material has carried out safety in utilization experimental study to two kinds of sludge present system, mainly include firing temperature, pH, oxidative conditions to the Leaching of Heavy Metals characteristic in haydite and the influence of curing rule, draw under various conditions, the leaching concentration of heavy metal is far below Chinese danger wastes Leaching Heavy Metals judging standard in haydite.Meanwhile, simple discussion has been carried out to heavy metals immobilization mode in haydite.（1）Firing temperature is influenceed than more significant on the heavy metals immobilization efficiency in haydite.Cd in haydite2+、Cr6+、Cu2+And Pb2+Leaching content be gradually reduced with the raising of firing temperature；After firing temperature is more than 950 DEG C, 30d the or 24h leaching contents reduction of the heavy metal of haydite is clearly.
（2）Heavy metal is to all showing very strong leaching characteristic, Cd under strong acidic condition2+、Cr6+、Cu2+And Pb2+Leaching content reach maximum in pH=1；Hereafter, with pH rise, the heavy metal institute of haydite is impacted relatively small, and leaching content reduces rapidly, and when pH is more than 2, Leaching of Heavy Metals amount is very small and changes unobvious；This result has done important guarantee to haydite safety in utilization, haydite is applied under conditions of strong acid and strong base, with important use value.
（3）With H2O2The leaching content of heavy metal in the gradually increase of concentration, haydite is also gradually increased；Influence of influence of the oxidative conditions to heavy metals immobilization efficiency in haydite mainly to the heavy metal in haydite surface mass and internal pore surface material；Oxidisability is stronger, and the erosion, dissolution to haydite surface mass are stronger, so that the leaching content that result in 4 heavy metal species gradually rises.
Copper water-supply pipe and sewage sludge are essential products in Water purification and sewage disposal process.Copper water-supply pipe and sewage sludge have turned into influence environment in waste, cause harm one of factor the most serious.Conventional method for sludge treatment（Such as fill and burn）It has been difficult in adapt to increasingly strict environmental standard.The present invention is holding international community on the basis of copper water-supply pipe and sewage sludge processing, the latest tendency in disposal field and developing direction, and self-characteristic, contamination hazard approach for two kinds of sludge have carried out new exploration from tupe.Have studied two kinds of sludge material utilization approach --- sludge prepares ceramic particle technology, security and use limits have been carried out to resource product simultaneously, it is that commercial application from now on and pollution control technology provide necessary theoretical foundation and reliable scientific basis, with certain environmental benefit, economic benefit, social benefit and learning value.
Brief description of the drawings
Fig. 1 is firing temperature to heavy metal in hayditeCdLeaching content influence figure, ■ represents that concentration is 50mg/kg in figureCd（24h）, ● expression concentration is 500mg/kgCd（24h）, ▲ expression concentration is 1000mg/kgCd（24h）, ▼ represent concentration be 50mg/kgCd（30d）, ◆ expression concentration is 500mg/kgCd（30d）,
Expression concentration is 1000mg/kgCd（30d）；Fig. 2 is firing temperature to heavy metal in hayditeCrLeaching content influence figure, ■ represents that concentration is 50mg/kg in figureCr（24h）, ● expression concentration is 500mg/kgCr（24h）, ▲ expression concentration is 1000mg/kgCr（24h）, ▼ represent concentration be 50mg/kgCr（30d）, ◆ expression concentration is 500mg/kgCr（30d）,
Expression concentration is 1000mg/kgCr（30d）；Fig. 3 is firing temperature to heavy metal in hayditePdLeaching content influence figure, ■ represents that concentration is 50mg/kgPd in figure（24h）, ● expression concentration is 500mg/kgPd（24h）, ▲ expression concentration is 1000mg/kgPd（24h）, ▼ represent concentration be 50mg/kgPd（30d）, ◆ expression concentration is 500mg/kgPd（30d）,
Expression concentration is 1000mg/kgPd（30d）；Fig. 4 is firing temperature to heavy metal in hayditeCuLeaching content influence figure, ■ represents that concentration is 50mg/kg in figureCu（24h）, ● expression concentration is 500mg/kgCu（24h）, ▲ expression concentration is 1000mg/kgCu（24h）, ▼ represent concentration be 50mg/kgCu（30d）, ◆ expression concentration is 500mg/kgCu（30d）,
Expression concentration is 1000mg/kgCu（30d）；Fig. 5 is pH to heavy metal in hayditeCdLeaching content influence figure, ■ represents that concentration is 1mg/kg in figureCd（24h）, ● expression concentration is 25mg/kgCd（24h）, ▲ expression concentration is 50mg/kgCd（24h）, ▼ represent concentration be 1mg/kgCd（30d）, ◆ expression concentration is 25mg/kgCd（30d）,
Expression concentration is 50mg/kgCd（30d）；Fig. 6 is pH to heavy metal in hayditeCrLeaching content influence figure, ■ represents that concentration is 50mg/kg in figureCr（24h）, ● expression concentration is 500mg/kgCr（24h）, ▲ expression concentration is 1000mg/kgCr（24h）, ▼ represent concentration be 50mg/kgCr（30d）, ◆ expression concentration is 500mg/kgCr（30d）,
Expression concentration is 1000mg/kgCr（30d）；Fig. 7 is pH to heavy metal in hayditeCuLeaching content influence figure, ■ represents that concentration is 100mg/kg in figureCu（24h）, ● expression concentration is 250mg/kgCu（24h）, ▲ expression concentration is 500mg/kgCu（24h）, ▼ represent concentration be 100mg/kgCu（30d）, ◆ expression concentration is 250mg/kgCu（30d）,
Expression concentration is 500mg/kgCu（30d）；Fig. 8 is pH to heavy metal in hayditePdLeaching content influence figure, ■ represents that concentration is 50mg/kgPd in figure（24h）, ● expression concentration is 500mg/kgPd（24h）, ▲ expression concentration is 1000mg/kgPd（24h）, ▼ represent concentration be 50mg/kgPd（30d）, ◆ expression concentration is 500mg/kgPd（30d）,
Expression concentration is 1000mg/kgPd（30d）；Fig. 9 is H2O2Concentration is to heavy metal in hayditeCdLeaching content influence figure, ■ represents that concentration is 1mg/kg in figureCd（24h）, ● expression concentration is 25mg/kgCd（24h）, ▲ expression concentration is 50mg/kgCd（24h）, ▼ represent concentration be 1mg/kgCd（30d）, ◆ expression concentration is 25mg/kgCd（30d）,Expression concentration is 50mg/kgCd（30d）；Figure 10 is H2O2Concentration is to heavy metal in hayditeCrLeaching content influence figure, ■ represents that concentration is 100mg/kg in figureCr（24h）, ● expression concentration is 500mg/kgCr（24h）, ▲ expression concentration is 1000mg/kgCr（24h）, ▼ represent concentration be 100mg/kgCr（30d）, ◆ expression concentration is 500mg/kgCr（30d）,Expression concentration is 1000mg/kgCr（30d）；Figure 11 is H2O2Concentration is to heavy metal in hayditeCuLeaching content influence figure, ■ represents that concentration is 100mg/kg in figureCu（24h）, ● expression concentration is 250mg/kgCu（24h）, ▲ expression concentration is 500mg/kgCu（24h）, ▼ represent concentration be 100mg/kgCu（30d）, ◆ expression concentration is 250mg/kgCu（30d）,
Expression concentration is 500mg/kgCu（30d）；Figure 12 is H2O2Concentration is to heavy metal in hayditePdLeaching content influence figure, ■ represents that concentration is 50mg/kgPd in figure（24h）, ● expression concentration is 500mg/kgPd（24h）, ▲ expression concentration is 1000mg/kgPd（24h）, ▼ represent concentration be 50mg/kgPd（30d）, ◆ expression concentration is 500mg/kgPd（30d）,
Expression concentration is 1000mg/kgPd（30d）.
Embodiment
Embodiment one：A kind of method for preparing building porcelain granule using copper water-supply pipe and sewage sludge is carried out in the steps below in present embodiment：Copper water-supply pipe and sewage sludge are pressed（7/3~1.5）:1 mass ratio is mixed to get compound; add silicates material; the silicates material consumption is the 8% ~ 15% of mixture quality; mix; comminutor extrusion forming is subsequently placed in, is dried naturally, is heated up with 8 ~ 10 DEG C/min speed; then 25 ~ 35min, furnace cooling are incubated at 950 ~ 1000 DEG C；Obtain building porcelain granule.
The loose volume weight of building porcelain granule is 550 ~ 750 kg/m after tested3, apparent particle density is 1050 ~ 1400 kg/m3, voidage is 41%-53%, water absorption rate within 15%, cylindrical compress strength is 8 ~ 17 MPa, and mud containing rate is 0.3% ~ 0.5%.
Whether the sludge containing heavy metal can be utilized to prepare the haydite with safety in utilization to investigate, according to the minimum value and maximum of certain content of beary metal in the sludge of each department in invention, the sewage sludge used in invention carries out artificial addition heavy metal.It is that Heavy Metal Level In Sludge such as numerical value is as shown in table 1 after adding, from 3 kinds of different content of beary metal.It is artificial in invention to add heavy metal Cr6+、Cd2+、Cu2+And Pb2+Solution allocation use respectively：Analyze pure K2CrO4、Cd(NO3)2、Pb(NO3)2And CuSO4·5H2O.Specific adding method is to draw a certain amount of heavy metal solution into sludge, is sufficiently mixed, sludge is placed and spontaneously dried in atmosphere afterwards, and carry out mechanical crushing, manually sieve after make haydite.
Various content of beary metal in the experiment sewage sludge of table 1（mg/kg）
| Content | Cr6+ | Cd2+ | Cu2+ | Pb2+ |
| Minimum | 100 | 1 | 100 | 50 |
| Median | 500 | 25 | 250 | 500 |
| |
1000 | 50 | 500 | 1000 |
Research is made that to the solidification effect of sludge producing building haydite heavy metal in the present invention,
（1）Firing temperature is influenceed than more significant on the heavy metals immobilization efficiency in haydite.Cd in haydite2+、Cr6+、Cu2+And Pb2+Leaching content be gradually reduced with the raising of firing temperature；After firing temperature is more than 950 DEG C, 30d the or 24h leaching contents reduction of the heavy metal of haydite is clearly.As Figure 1-Figure 4.
（2）All heavy metals are under strong acidic condition（pH=1）All show very strong leaching characteristic, Cd2+、Cr6+、Cu2+And Pb2+Leaching content it is maximum；Hereafter, with pH rise, the heavy metal institute of haydite is impacted relatively small, and leaching content change is not obvious；Can be with only in the limit（Highly acid）Under the conditions of, heavy metals immobilization efficiency is influenceed larger by pH value in haydite；This result has done important guarantee to haydite safety in utilization, haydite is applied under the conditions of major part, with important researching value.As shown in Figure 5-Figure 8.
（3）With H2O2The leaching content of heavy metal in the gradually increase of concentration, haydite is also gradually increased；Influence of influence of the oxidative conditions to heavy metals immobilization efficiency in haydite mainly to the heavy metal in haydite surface mass and internal pore surface material；Oxidisability is stronger, and the erosion, dissolution to haydite surface mass are stronger, so that the leaching content that result in 4 heavy metal species gradually rises.As shown in Fig. 9-Figure 12.
（4）With SiO2Cd in the increase of content, haydite2+、Cu2+Leaching content be all gradually increased, Pb2+Leaching content be first reduce after it is increased；SiO2After content >=25%, the Cr in haydite6+Leaching content be gradually reduced.With A12O3Cd in content increase, haydite2+、Cr6+、Cu2+And Pb2+Leaching content the trend being gradually reduced all is presented.With Fe2O3Cd in content increase, haydite2+、Cu2+And Pb2+Leaching content be gradually reduced；Cr6+Leaching content be first reduce after it is increased.With the increase of CaO content in raw material, the Cd in haydite2+、Cu2+And Pb2+Leaching content be gradually increased；Cr6+Leaching content first reduce and increase afterwards.As content of MgO increases, the Cd in haydite2+、Cr6+、Cu2+And Pb2+Leaching content be that the trend for first reducing and being held essentially constant afterwards is presented.
Embodiment two：Present embodiment from unlike embodiment one：Copper water-supply pipe and sewage sludge are pressed（3~2）:2 mass ratioes are mixed；The silicates material consumption is the 10% ~ 15% of mixture quality.30min is incubated at 1000 DEG C.Other steps and parameter are identical with one of embodiment one to three.
Embodiment three：Present embodiment from unlike embodiment one or two：Silicates material is sodium metasilicate.Other steps and parameter are identical with embodiment one or two.
Embodiment four：A kind of method for preparing haydite using copper water-supply pipe and sewage sludge is carried out in the steps below in present embodiment：
Sewage sludge and river bottom mud are pressed（7/3~1.5）:1 mass ratio is mixed to get compound; add silicates material; the silicates material consumption is the 8% ~ 15% of mixture quality, mixes, is subsequently placed in comminutor extrusion forming; naturally dry; heated up 200 DEG C with 8 ~ 10 DEG C/min speed, be incubated 10 min, 10min is then incubated at 550 DEG C with the heating of 8 ~ 10 DEG C/min speed; 10min, furnace cooling are incubated at 950 ~ 1050 DEG C with the heating of 8 ~ 10 DEG C/min speed again；Obtain haydite.
The loose volume weight of haydite is 550 ~ 750 kg/m after tested3, apparent particle density is 1050 ~ 1400 kg/m3, voidage be 41% ~ 53%, water absorption rate within 15%, cylindrical compress strength be 8 ~ 17 MPa, mud containing rate is 0.3% ~ 0.5%.
Embodiment the Seventh Five-Year Plan：Present embodiment from unlike embodiment six or four：Sewage sludge and river bottom mud are pressed（3~2）:2 mass ratioes are mixed.Other steps and parameter are identical with embodiment six or four.
Embodiment eight or six：Present embodiment from unlike embodiment six or the Seventh Five-Year Plan or six：Silicates material consumption is the 10% ~ 15% of mixture quality.Other steps and parameter are identical with embodiment six or the Seventh Five-Year Plan or six.
Embodiment seven：Present embodiment from unlike embodiment six to one of 8 four to six：Heated up 200 DEG C with 10 DEG C/min speed, be incubated 10 min, 10 min are then incubated at 550 DEG C with the heating of 10 DEG C/min speed, then 10 min are incubated at 1000 DEG C with the heating of 10 DEG C/min speed.Other steps and parameter and embodiment six are to one of 8 four to six identical.
Embodiment eight：Present embodiment from unlike embodiment six to one of 9 four to seven：Silicates material is sodium metasilicate.Other steps and parameter and embodiment six are to one of 9 four to seven identical.
Embodiment nine：A kind of method for preparing haydite using copper water-supply pipe and sewage sludge is carried out in the steps below in present embodiment：
Copper water-supply pipe and sewage sludge are pressed 7/3:1 mass ratio is mixed to get compound, adds sodium metasilicate, and the amount of sodium silicate is the 10% of mixture quality; mix, be subsequently placed in comminutor extrusion forming, dry naturally; heated up with 8 ~ 10 DEG C/min speed, 25 ~ 35min, furnace cooling are then incubated at 950 ~ 1000 DEG C；Obtain building porcelain granule.
The loose volume weight of haydite is 680 ~ 750kg/m after tested3, apparent particle density is 1300 ~ 1400 kg/m3, voidage be 41% ~ 47%, water absorption rate within 12%, cylindrical compress strength be 13 ~ 17 MPa, mud containing rate is 0.3% ~ 0.4%.
Embodiment ten：A kind of method for preparing haydite using copper water-supply pipe and sewage sludge is carried out in the steps below in present embodiment：
Sewage sludge and river bottom mud are pressed 1:1 mass ratio is mixed to get compound; add sodium metasilicate; the amount of sodium silicate is the 10% of mixture quality, mixes, is subsequently placed in comminutor extrusion forming; naturally dry; heated up 200 DEG C with 10 DEG C/min speed, be incubated 10 min, 10min is then incubated at 550 DEG C with the heating of 10 DEG C/min speed; 10min, furnace cooling are incubated at 1000 DEG C with the heating of 10 DEG C/min speed again；Obtain building porcelain granule.
The loose volume weight of building porcelain granule is 600 ~ 700 kg/m after tested3, apparent particle density is 1200 ~ 1320 kg/m3, voidage be 45% ~ 50%, water absorption rate within 13%, cylindrical compress strength be 10 ~ 16 MPa, mud containing rate is 0.35% ~ 0.45%.
Claims (10)
1. a kind of method that building porcelain granule is prepared with copper water-supply pipe and sewage sludge, it is characterised in that a kind of method for preparing building porcelain granule using copper water-supply pipe and sewage sludge is carried out in the steps below：Copper water-supply pipe and sewage sludge are pressed（7/3~1.5）:1 mass ratio is mixed to get compound, adds silicates material, and the silicates material consumption is the 8% ~ 15% of mixture quality; mix, be subsequently placed in comminutor extrusion forming, dry naturally; heated up with 8 ~ 10 DEG C/min speed, 25 ~ 35min, furnace cooling are then incubated at 950 ~ 1000 DEG C；Obtain building porcelain granule.
2. a kind of method that building porcelain granule is prepared with copper water-supply pipe and sewage sludge according to claim 1, it is characterised in that copper water-supply pipe and sewage sludge are pressed（3~2）:2 mass ratioes are mixed.
3. a kind of method that building porcelain granule is prepared with copper water-supply pipe and sewage sludge according to claim 1, it is characterised in that silicates material, the silicates material consumption is the 10% ~ 15% of mixture quality.
4. a kind of method that building porcelain granule is prepared with copper water-supply pipe and sewage sludge according to claim 1, it is characterised in that be incubated 30min at 1000 DEG C.
5. a kind of method that building porcelain granule is prepared with copper water-supply pipe and sewage sludge according to claim 1, it is characterised in that silicates material is sodium metasilicate.
6. a kind of method that building porcelain granule is prepared with copper water-supply pipe and sewage sludge, it is characterised in that a kind of method for preparing building porcelain granule using copper water-supply pipe and sewage sludge is carried out in the steps below：Sewage sludge and river bottom mud are pressed（7/3~1.5）:1 mass ratio is mixed to get compound; add silicates material; the silicates material consumption is the 8% ~ 15% of mixture quality, mixes, is subsequently placed in comminutor extrusion forming; naturally dry; heated up 200 DEG C with 8 ~ 10 DEG C/min speed, be incubated 10 min, 10min is then incubated at 550 DEG C with the heating of 8 ~ 10 DEG C/min speed; 10min, furnace cooling are incubated at 950 ~ 1050 DEG C with the heating of 8 ~ 10 DEG C/min speed again；Obtain building porcelain granule.
7. a kind of method that building porcelain granule is prepared with copper water-supply pipe and sewage sludge according to claim 6, it is characterised in that sewage sludge and river bottom mud are pressed（3~2）:2 mass ratioes are mixed.
8. a kind of method that building porcelain granule is prepared with copper water-supply pipe and sewage sludge according to claim 6, it is characterised in that the silicates material consumption is the 10% ~ 15% of mixture quality.
9. a kind of method that building porcelain granule is prepared with copper water-supply pipe and sewage sludge according to claim 6, it is characterized in that being heated up 200 DEG C with 10 DEG C/min speed, it is incubated 10 min, then 10min is incubated at 550 DEG C with the heating of 10 DEG C/min speed, then 10min is incubated at 1000 DEG C with the heating of 10 DEG C/min speed.
10. a kind of method that building porcelain granule is prepared with copper water-supply pipe and sewage sludge according to claim 6, it is characterised in that silicates material is sodium metasilicate.
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Cited By (3)
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| CN107352890A (en) * | 2016-05-09 | 2017-11-17 | 北京师范大学 | A kind of low energy consumption waterworks sludge miniaturation method |
| CN108585934A (en) * | 2018-06-25 | 2018-09-28 | 西安科技大学 | A kind of aluminium sludge ceramsite preparation method |
| CN115253661A (en) * | 2022-08-24 | 2022-11-01 | 广州同慎科技有限公司 | Biological bacterium carrier and preparation method thereof |
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| CN107352890A (en) * | 2016-05-09 | 2017-11-17 | 北京师范大学 | A kind of low energy consumption waterworks sludge miniaturation method |
| CN108585934A (en) * | 2018-06-25 | 2018-09-28 | 西安科技大学 | A kind of aluminium sludge ceramsite preparation method |
| CN115253661A (en) * | 2022-08-24 | 2022-11-01 | 广州同慎科技有限公司 | Biological bacterium carrier and preparation method thereof |
| CN115253661B (en) * | 2022-08-24 | 2023-08-04 | 广州同慎科技有限公司 | Biological fungus carrier and preparation method thereof |
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Application publication date: 20121017 |