CN1810940A - Sludge fuel stick and its prepn - Google Patents
Sludge fuel stick and its prepn Download PDFInfo
- Publication number
- CN1810940A CN1810940A CN 200610011414 CN200610011414A CN1810940A CN 1810940 A CN1810940 A CN 1810940A CN 200610011414 CN200610011414 CN 200610011414 CN 200610011414 A CN200610011414 A CN 200610011414A CN 1810940 A CN1810940 A CN 1810940A
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- Prior art keywords
- sludge
- fuel stick
- binding agent
- ignition dope
- sludge fuel
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Links
- 239000010802 sludge Substances 0.000 title claims abstract description 52
- 239000000446 fuel Substances 0.000 title claims abstract description 38
- 239000003245 coal Substances 0.000 claims abstract description 18
- 239000002893 slag Substances 0.000 claims abstract description 8
- 238000002360 preparation method Methods 0.000 claims abstract description 7
- 239000010881 fly ash Substances 0.000 claims abstract description 4
- 239000011230 binding agent Substances 0.000 claims description 16
- 235000003599 food sweetener Nutrition 0.000 claims description 13
- 239000003765 sweetening agent Substances 0.000 claims description 13
- 239000004568 cement Substances 0.000 claims description 10
- 230000018044 dehydration Effects 0.000 claims description 7
- 238000006297 dehydration reaction Methods 0.000 claims description 7
- 239000000292 calcium oxide Substances 0.000 claims description 6
- 239000000428 dust Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000010902 straw Substances 0.000 claims description 6
- 235000013339 cereals Nutrition 0.000 claims description 4
- 239000003818 cinder Substances 0.000 claims description 4
- 239000004927 clay Substances 0.000 claims description 4
- 239000011521 glass Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- -1 ignition dope Substances 0.000 claims description 2
- 238000002485 combustion reaction Methods 0.000 abstract description 11
- 239000000463 material Substances 0.000 abstract description 8
- 238000005516 engineering process Methods 0.000 abstract description 5
- 239000002910 solid waste Substances 0.000 abstract description 4
- 239000003795 chemical substances by application Substances 0.000 abstract description 3
- 238000002156 mixing Methods 0.000 abstract description 2
- 239000000853 adhesive Substances 0.000 abstract 1
- 230000001070 adhesive effect Effects 0.000 abstract 1
- 230000003009 desulfurizing effect Effects 0.000 abstract 1
- 238000005453 pelletization Methods 0.000 abstract 1
- 239000010865 sewage Substances 0.000 description 11
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 10
- 230000003203 everyday effect Effects 0.000 description 10
- 238000000034 method Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 229910001385 heavy metal Inorganic materials 0.000 description 6
- 238000010248 power generation Methods 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 235000012255 calcium oxide Nutrition 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 4
- 239000002956 ash Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 229910021536 Zeolite Inorganic materials 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 239000010457 zeolite Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- 239000002361 compost Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000003546 flue gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000000050 nutritive effect Effects 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 230000001717 pathogenic effect Effects 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 239000003380 propellant Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- ABDKAPXRBAPSQN-UHFFFAOYSA-N veratrole Chemical compound COC1=CC=CC=C1OC ABDKAPXRBAPSQN-UHFFFAOYSA-N 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000002154 agricultural waste Substances 0.000 description 1
- 238000003763 carbonization Methods 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000002860 competitive effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- 239000011133 lead Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- 239000010801 sewage sludge Substances 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Images
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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/10—Biofuels, e.g. bio-diesel
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E50/00—Technologies for the production of fuel of non-fossil origin
- Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel
Landscapes
- Solid Fuels And Fuel-Associated Substances (AREA)
- Treatment Of Sludge (AREA)
Abstract
The present invention is one kind of sludge fuel stick and its preparation process, and belongs to the field of solid waste treating technology. The sludge fuel stick is prepared with dewatered sludge 50-70 wt%, combustion improver 20-50 wt%, adhesive 3-5 wt% and desulfurizing agent 5-10 wt%. The preparation process includes mixing the said materials in a stirrer, pelletizing in a pelletizer, forming and stoving. The present invention can treating sludge as well as plant stalk, furnace slag, coal slag, flyash and other solid waste and utilize heat in sludge.
Description
Technical field
The invention belongs to solid waste disposal and dispose, particularly relate to the method for sewage treatment plant residual recycling sludge.
Background technology
Along with the raising year by year of Chinese city sewage total amount and processing rate, the output of municipal sludge has also taken place significantly to increase.By the end of the end of the year 2002,537 of the existing municipal sewage plants of China, processing power reaches 13,000,000,000 t/a, can produce dewatered sludge 1,300 ten thousand t/a.Plan according to municipal sewage treatment in China's national economy evolutionary operation(EVOP) and the water prevention and cure of pollution planning: by 2010, the municipal sludge quantity discharged will reach more than 1,200 ten thousand t/a (dry-matter), dewatered sludge is pressed water ratio 80% and is calculated, and can produce more than dehydration municipal sludge 6,000 ten thousand t/a.
Municipal sludge contains organic matter, heavy metal element such as nutritive element such as nitrogen, phosphorus, potassium and Ni, Pb, Cr, Cu, Zn.Organism rots easily without stabilization treatment, and nutritive element and heavy metal substance also can cause second environmental pollution.In the face of arduous sludge treatment handling problems, Chinese Government pays much attention to, formulated in succession " pollutent control criterion in the agricultural mud " (GB4284-84), " urban wastewater treatment firm pollutant emission standard " (GB18918-2002), " municipal sewage plant's sewage sludge emission standard " (CJ3025-93) and " municipal sewage treatment and pollution prevention technique policy ", the treatment and disposal of mud has been proposed strict requirement.
The sludge ultimate disposal method mainly contains throws extra large evacuation, agricultural use, landfill, compost, burning or alternate manner disposal and utilization.Account for 44.8% in that Chinese mud is agricultural, the land landfill accounts for 31%, and other disposal accounts for 10.5%, accounts for 13.7% without what dispose.Mud is agricultural longer at Chinese applicating history, but the loss of the heavy metal contamination that it causes, pathogenic agent, hardly degraded organic substance and nitrogen, phosphorus makes the standard of its application more and more stricter to surface water and phreatic pollution.Sanitary landfill is subjected to the restriction of land used, and development prospect is not good.Compost treatment is unfavorable for sustainable development to site area requirements big transportation and processing costs that also need be higher.Burning is one of method for sludge treatment the most completely, and it can make the whole carbonizations of organism, and pathogen kill can reduce sludge volume to greatest extent, is one of main development trend of handling in the world in mud.The consolidating to contain of mud contains a large amount of organic compositions (＞60%) in the thing, burning can release of heat.The combustion heat value of dewatered sludge (water ratio is 0) is by conservative 4000 kcal/kg that are thought of as.Utilizing mud to make existing patent aspect the synthol abroad, with coal: mud: zeolite is made fuel pellet with 65: 25: 10 mixed, also can be according to coal: mud: zeolite: rice bran equals 45: 35: 10: 10 or coal: mud: zeolite: unslaked lime equals 40: 40: 10: 10 ratio synthol, wherein the ratio of coal near in addition surpass half, incendiary mainly is a coal in the propellant combination.Therefore cost is higher, be unfavorable for popularizing in an all-round way, if can further improve the calorific value of mud by certain pre-treatment, reduce the ignition dope addition in the propellant combination, make full use of the heat that produces in the burning process, reduce the cost of sludge treatment disposal even can obtain income, under present energy-intensive situation, will have great competitive power with energy form.
Summary of the invention
The objective of the invention is to propose a kind of technology of utilizing mud to produce fuel stick according to the problem that the sludge disposal present situation exists.
A kind of sludge fuel stick that the present invention proposes, it is characterized in that: described fuel stick contains dewatered sludge, ignition dope, binding agent, sweetening agent, and its mass percent is: dewatered sludge 50～70%, ignition dope 20～50%, binding agent 3～5%, sweetening agent 5～10%.
In above-mentioned sludge fuel stick, described ignition dope is any in flyash, straw, cereal or the coal.
In above-mentioned sludge fuel stick, described binding agent is any in glass cement, clay or the cement.
In above-mentioned sludge fuel stick, described sweetening agent is Ca (OH)
2Any in/CaO, slag, cinder or the flying dust.
The preparation method of a kind of sludge fuel stick that the present invention proposes, it is characterized in that: described preparation method is:
(1) will pack in the stirrer through the mud after the dehydration, and add ignition dope, binding agent, sweetening agent in proportion, and stir, described interpolation mass percent is an ignition dope 20～50%, binding agent 3～5%, sweetening agent 5～10%;
(2) said mixture is packed into tablets press, granulating and forming makes sludge fuel stick after the oven dry.
Characteristics of the present invention are with mud to be main component, and the ratio of ignition dope is lower than 30%, only play the effect of regulating fixed carbon, improving combustion conditions, and heat is then mainly provided by mud.And with straw, cereal etc. as ignition dope, can fuel saving the cost of rod, solved the problem of outlet of these agricultural wastes again.And binding agent also can adopt clay material so cheaply except adopting conventional glass cement, and this exterior-applied liquid medicine mud can play the effect of stabilizing heavy metal as binding agent.And sweetening agent is except adopting commercial Ca (OH)
2Outside/the CaO, also can adopt the flying dust of slag, cinder even low-heavy metal content, heavy metal composition wherein can carry out stabilization by binding agents such as cement and solidify.Therefore, one aspect of the present invention is disposed sludge stabilizing effectively by burning, also realized the disposal of solid waste such as straw, slag, cinder and flying dust, reached function of processing waste with waste, utilized the heat of mud on the other hand, and reduced the cost of additive, realized the doulbe-sides' victory of social benefit and economic interests.
Description of drawings
Fig. 1 is the technological process of production of sludge fuel stick of the present invention.
1---ignition dope, 2---binding agent, 3---sulphur-fixing agent, 4---pulverizer, 5---mixing device, 6---tablets press, 7---fuel stick.
Embodiment
Below in conjunction with embodiment technical scheme of the present invention is described further:
To pack in the stirrer through the mud after the dehydration, add category-A material, category-B material and C class material according to a certain percentage, stir.With the mixture tablets press of packing into, red-tape operati condition granulating and forming can make sludge fuel stick after the oven dry.Sludge fuel stick is through Experiment of Thermophysics and pollutent measure of control, and the thermal technology that its performance reaches combustion power generation requires and the pollutant emission requirement, promptly can be used as finished product and is used for combustion power generation.
Its concrete technological step is:
A. ignition dope;
Table 1 ignition dope kind
| Numbering |
| 1 | 2 | 3 | 4 | |
| Title | Flyash | Straw | Cereal | Coal |
B. binding agent;
Table 2 binding agent kind
| Numbering | 1 | 2 | 3 |
| Title | Glass cement | Clay | Cement |
C. sweetening agent;
Table 3 sweetening agent kind
| Numbering |
| 1 | 2 | 3 | 4 | |
| Title | Ca(OH) 2/CaO | Slag | Cinder | Flying dust |
To pack in the stirrer through the mud after the dehydration, and add category-A material, category-B material and C class material according to a certain percentage, and stir, proportioning sees Table 4.With the mixture tablets press of packing into, red-tape operati condition granulating and forming can make sludge fuel stick after the oven dry.Sludge fuel stick is through Experiment of Thermophysics and pollutent measure of control, and the thermal technology that its performance reaches combustion power generation requires and the pollutant emission requirement, promptly can be used as finished product and is used for combustion power generation.
Each set of dispense ratio of table 4
| Component | A | B | C | Dewatered sludge |
| Ratio (%) | 20～50 | 3～5 | 5～10 | 50～70 |
According to experimental result, the sludge fuel stick that the scheme of being mentioned in the invention is made, its combustionproperty is good, and the pollutent of discharging also meets the requirements.
The municipal sewage plant, Qinhuangdao adopts Wastewater Treated by Activated Sludge Process, and the character of its dewatered sludge is as follows:
| Water ratio (%) | Volatile content (%) | Ash oontent (%) | Fixed carbon (%) | Lower heat value (kcal/g) |
| 84.20 | 40.95 | 56.66 | 2.39 | 457 |
Produce fuel stick with this dewatered sludge, its component and proportioning such as following table:
| Component | Mud | Coal | Glass cement | Unslaked lime |
| Proportioning (%) | 70 | 20 | 5 | 5 |
The character of fuel stick is as follows:
| Water ratio (%) | Volatile content (%) | Ash oontent (%) | Fixed carbon (%) | Lower heat value (kcal/g) |
| 40.90 | 31.73 | 42.31 | 25.96 | 2735 |
Its thermal property is as follows:
| Point of ignition (℃) | Flue-gas temperature (℃) | Unburned combustible in slag (%) | Thermo-efficiency (%) |
| 397 | 147 | 8.77 | 78.94 |
This industrial experimentation scale is the sewage load of 30000T/D, and the dewatered sludge that produce every day can make fuel stick 24T.
As generating, efficiency of combustion and efficiency of generator be respectively in 50% and 30% after the fuel stick combustion heating, but then every day altogether generated energy be:
4.8 * 10
7Kcal * 4.2kJ/kcal * 50% * 30%=3.0 * 10
7The kJ=8400 degree
About 336 degree of whole dehydration and fuel stick production process consumes power every day.
Then the clean electric weight that produces every day is:
The 8400-336=8064 degree
According to the present renewable energy power generation electrovalence policy that is incorporated into the power networks, every degree electricity is by 0.50 yuan, and the economic benefit that then annual generating produces is:
* 365 days * 0.5=1471680 of 8064 degree unit
The coal of using every day is 10 tons, and then 1 year is 3650 tons with coal, and the unit price of coal is in 300 yuan, and the cost of then buying coal is: 1095000 yuan.
Therefore annual net income is 376680 yuan.
Municipal sewage plant, Nanshan District, Shenzhen adopts oxidation ditch process to dispose of sewage, and the character of dewatered sludge is as follows:
| Water ratio (%) | Volatile content (%) | Ash oontent (%) | Fixed carbon (%) | Lower heat value (kcal/g) |
| 82.70 | 42.32 | 55.64 | 2.04 | 463 |
Produce fuel stick with this dewatered sludge, its component and proportioning such as following table:
| Component | Mud | Straw | Cement | Flying dust |
| Proportioning (%) | 50 | 40 | 5 | 5 |
The character of fuel stick is as follows:
| Water ratio (%) | Volatile content (%) | Ash oontent (%) | Fixed carbon (%) | Lower heat value (kcal/g) |
| 38.67 | 29.97 | 45.30 | 24.53 | 2904 |
Its thermal property is as follows:
| Point of ignition (℃) | Flue-gas temperature (℃) | Unburned combustible in slag (%) | Thermo-efficiency (%) |
| 368 | 153 | 7.32 | 80.02 |
This industrial experimentation scale is the sewage load of 50000T/D, and the dewatered sludge that produce every day can make fuel stick 40T.
As generating, efficiency of combustion and efficiency of generator be respectively in 50% and 30% after the fuel stick combustion heating, but then every day altogether generated energy be:
9.0 * 107kcal * 4.2kJ/kcal * 50% * 30%=5.0 * 107kJ=14000 degree
About 600 degree of whole dehydration and fuel stick production process consumes power every day.
Then the clean electric weight that produces every day is:
The 14000-600=13400 degree
According to the present renewable energy power generation electrovalence policy that is incorporated into the power networks, every degree electricity is by 0.50 yuan, and the economic benefit that then annual generating produces is:
* 365 days * 0.5=2445500 of 13400 degree unit
The coal of using every day is 15 tons, and then 1 year is 5475 tons with coal, and the unit price of coal is in 300 yuan, and the cost of then buying coal is: 1642500 yuan.
Therefore annual net income is 803000 yuan.
Claims (5)
1, a kind of sludge fuel stick is characterized in that: described fuel stick contains dewatered sludge, ignition dope, binding agent, sweetening agent, and its mass percent is: dewatered sludge 50～70%, ignition dope 20～50%, binding agent 3～5%, sweetening agent 5～10%.
2, according to the described sludge fuel stick of claim 1, it is characterized in that: described ignition dope is any in flyash, straw, cereal or the coal.
3, according to the described sludge fuel stick of claim 1, it is characterized in that: described binding agent is any in glass cement, clay or the cement.
4, according to the described sludge fuel stick of claim 1, it is characterized in that: described sweetening agent is Ca (OH)
2Any in/CaO, slag, cinder or the flying dust.
5, a kind of preparation method of sludge fuel stick is characterized in that: described preparation method is:
(1) will pack in the stirrer through the mud after the dehydration, and add ignition dope, binding agent, sweetening agent in proportion, and stir, described interpolation mass percent is an ignition dope 20～50%, binding agent 3～5%, sweetening agent 5～10%;
(2) said mixture is packed into tablets press, granulating and forming makes sludge fuel stick after the oven dry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610011414XA CN100390255C (en) | 2006-03-03 | 2006-03-03 | Sludge fuel stick and its prepn |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB200610011414XA CN100390255C (en) | 2006-03-03 | 2006-03-03 | Sludge fuel stick and its prepn |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1810940A true CN1810940A (en) | 2006-08-02 |
| CN100390255C CN100390255C (en) | 2008-05-28 |
Family
ID=36844061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB200610011414XA Expired - Fee Related CN100390255C (en) | 2006-03-03 | 2006-03-03 | Sludge fuel stick and its prepn |
Country Status (1)
| Country | Link |
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| CN (1) | CN100390255C (en) |
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101747974A (en) * | 2010-01-07 | 2010-06-23 | 苏州工业园区睿德环保科技有限公司 | Sludge environment-friendly renewable coal and preparation method thereof |
| CN101314514B (en) * | 2008-07-04 | 2010-07-28 | 浙江华章科技有限公司 | Sludge calorific value control method |
| CN101793403A (en) * | 2010-03-15 | 2010-08-04 | 陈凤飞 | Method for treating sludge |
| CN101126044B (en) * | 2007-09-25 | 2010-08-11 | 叶中华 | Sludge fire coal and its preparing process |
| CN101598339B (en) * | 2009-06-29 | 2010-10-13 | 浙江省环境保护科学设计研究院 | Resource disposal method by conditioning and incinerating crop straw and sewage sludge |
| CN101857353A (en) * | 2010-07-02 | 2010-10-13 | 胶南市易通热电有限责任公司 | Processing method for sludge with high water content |
| CN101250457B (en) * | 2008-03-28 | 2011-07-20 | 张国清 | Sludge waste particle fuel and preparation technique thereof |
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| CN1068847A (en) * | 1992-05-16 | 1993-02-10 | 黄石市青山湖污水净化厂 | The briquettes with sludge that utilizes biochemical sludge to make |
| ES2259303T3 (en) * | 1992-11-13 | 2006-10-01 | Florida State University | TAXANS THAT HAVE A SIDE CHAIN REPLACED WITH RENT AND PHARMACEUTICAL COMPOSITIONS THAT CONTAIN THEM. |
| CN1282781A (en) * | 1999-07-29 | 2001-02-07 | 中国科学院广州能源研究所 | Process for preparing briquettes with sludge |
| CN1396239A (en) * | 2002-07-01 | 2003-02-12 | 黄全刚 | Additive of fuel coal and mud-type fuel coal |
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2006
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