CN105859090A - Civil sludge comprehensive treatment process - Google Patents
Civil sludge comprehensive treatment process Download PDFInfo
- Publication number
- CN105859090A CN105859090A CN201610235458.4A CN201610235458A CN105859090A CN 105859090 A CN105859090 A CN 105859090A CN 201610235458 A CN201610235458 A CN 201610235458A CN 105859090 A CN105859090 A CN 105859090A
- Authority
- CN
- China
- Prior art keywords
- mud
- flue gas
- municipal sludge
- sludge
- powder
- 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
- 239000010802 sludge Substances 0.000 title claims abstract description 66
- 238000000034 method Methods 0.000 title claims abstract description 28
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000003546 flue gas Substances 0.000 claims abstract description 36
- 239000011812 mixed powder Substances 0.000 claims abstract description 18
- 239000011521 glass Substances 0.000 claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 13
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910001385 heavy metal Inorganic materials 0.000 claims abstract description 7
- 229910052681 coesite Inorganic materials 0.000 claims abstract description 6
- 229910052906 cristobalite Inorganic materials 0.000 claims abstract description 6
- 239000005416 organic matter Substances 0.000 claims abstract description 6
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 6
- 229910052682 stishovite Inorganic materials 0.000 claims abstract description 6
- 229910052905 tridymite Inorganic materials 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims description 23
- 239000000463 material Substances 0.000 claims description 14
- 238000001914 filtration Methods 0.000 claims description 10
- 238000000746 purification Methods 0.000 claims description 10
- 230000005611 electricity Effects 0.000 claims description 9
- 238000002386 leaching Methods 0.000 claims description 9
- 239000004035 construction material Substances 0.000 claims description 7
- 238000002474 experimental method Methods 0.000 claims description 7
- 230000007613 environmental effect Effects 0.000 claims description 6
- 230000001988 toxicity Effects 0.000 claims description 6
- 231100000419 toxicity Toxicity 0.000 claims description 6
- 241000693079 Maloideae Species 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 5
- 238000000354 decomposition reaction Methods 0.000 claims description 5
- 238000006477 desulfuration reaction Methods 0.000 claims description 5
- 230000023556 desulfurization Effects 0.000 claims description 5
- 238000005367 electrostatic precipitation Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 238000010298 pulverizing process Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- 238000001354 calcination Methods 0.000 claims description 4
- 235000019504 cigarettes Nutrition 0.000 claims 2
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims 2
- 239000007789 gas Substances 0.000 claims 1
- 239000002574 poison Substances 0.000 claims 1
- 231100000614 poison Toxicity 0.000 claims 1
- 238000010025 steaming Methods 0.000 claims 1
- 239000000383 hazardous chemical Substances 0.000 abstract 1
- 235000012239 silicon dioxide Nutrition 0.000 abstract 1
- 239000010865 sewage Substances 0.000 description 4
- 241000196324 Embryophyta Species 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 230000006641 stabilisation Effects 0.000 description 3
- 239000007795 chemical reaction product Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000007405 data analysis Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003205 fragrance Substances 0.000 description 1
- 239000010841 municipal wastewater Substances 0.000 description 1
- 244000052769 pathogen Species 0.000 description 1
- 230000001717 pathogenic effect Effects 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 238000004017 vitrification Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/008—Sludge treatment by fixation or solidification
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to the field of sludge treatment, in particular to a civil sludge comprehensive treatment process. The civil sludge comprehensive treatment process includes the steps that 1, sludge is sequentially dehydrated, smashed, desiccated and ground; the sludge is incinerated under the condition of 1200 DEG C, and organic matter in the sludge is thoroughly combusted and decomposed to generate a great deal of heat; the incinerated sludge, CaO powder and SiO2 powder are fully mixed by the mass ratio of 1:0.05:0.3; the mixed powder is calcined for the second time at the temperature of 1550 DEG C to form cured matter in a glass state, and heavy metal, arsenide and other hazardous substances difficult to decompose are fixed in the cured matter; 2, steam generated by an incinerator is used for supplying power to a steam turbine generator unit; 3, own heat of flue gas is used for desiccating the sludge, and the flue gas is exhausted through a flue gas purifying system. The problem of secondary pollution of civil sludge can be effectively solved, and the civil sludge is treated harmlessly and stably in a reduction and resourceful mode.
Description
Technical field
The present invention relates to field of sludge treatment, specially municipal sludge comprehensive processing technique.
Background technology
Along with China's level of urbanization improves constantly, the construction of municipal wastewater treatment facility has obtained high speed development, but
Substantial amounts of municipal sludge has been supervened in the construction of municipal sewage plant and operation, in terms of moisture content 80%, and whole nation year municipal sludge
Total output will quickly break through 30,000,000 tons, and it is the severeest that municipal sludge processes situation.Without the appropriate municipal sludge processing and disposing
Enter after environment, in mud containing the pollutants such as odorant, pathogen, persistent organism, heavy metal directly to water body and
Air brings secondary pollution, and the environment not only reducing municipal sewage system reduces discharging benefit, and to ecological environment and people
The activity of class constitutes serious threat.
Therefore it is badly in need of a kind of municipal sludge process technique the most efficient, applied widely of exploitation and solves municipal sludge
Secondary pollution problem, it is achieved innoxious, the minimizing of municipal sludge, stabilisation, recycling treatment.
Summary of the invention
The invention aims to solve municipal sludge secondary pollution problem, it is achieved municipal sludge innoxious, subtract
Quantization, stabilisation, recycling treatment.
Technical scheme is as follows:
(1) it is 52%～56% with super-pressure filter press press filtration municipal sludge to moisture content；By super-pressure filter press press filtration
After mud pulverize；Mud after pulverizing is carried out drying and other treatment；Mud after drying and other treatment is ground to 200 mesh；After grinding
Mud enters high-temperature incinerator, burns mud, the thorough combustion decomposition of organic matter in mud under conditions of 1200 DEG C
And produce amount of heat；By the mud after above-mentioned high temperature incineration and CaO powder and SiO2Powder in mass ratio 1: 0.05: 0.3 fills
Divide mixing, obtain mixed-powder；Mixed powder enters secondary high-temperature incinerator, to mixed-powder under conditions of 1550 DEG C
Carrying out secondary high-temperature calcining, mixed-powder ultimately forms glass form solidfied material, and it is harmful that heavy metal, arsenide etc. are difficult to decompose
Material is fixed in wherein, and glass form solidfied material sample makees toxicity leaching experiment by GB5805.3-2007, meets national environmental protection
Requirement, can be used for construction material or directly fills.
(2) steam that high-temperature incinerator produces will be used for Turbo-generator Set is that whole system is powered；Municipal sludge itself
Calorific value is higher, and its dry base heat value average is about 11850kJ/kg, and system institute subfam. Spiraeoideae own is about Turbo-generator Set and produces electricity
About 75%.
(3) flue gas that high-temperature incinerator produces enters sludge drying device, utilizes the heat of flue gas self to carry out mud
Drying and other treatment；Flue gas enters flue gas purification system after sludge drying device, finally discharges；Flue gas purification system includes flue gas
Denitration, electrostatic precipitation, flue gas desulfurization three part.
Wherein: need to be 52%～56% to moisture content with super-pressure filter press press filtration municipal sludge.
Wherein: the mud after super-pressure filter press press filtration need to be pulverized.
Wherein: mud after pulverizing need to be carried out drying and other treatment.
Wherein: the mud after drying and other treatment need to be ground to 200 mesh.
Wherein: the mud after grinding enters high-temperature incinerator, burns mud, in mud under conditions of 1200 DEG C
The thorough combustion decomposition of organic matter also produces amount of heat.
Wherein: need to be by the mud after high temperature incineration and CaO powder and SiO2Powder in mass ratio 1: 0.05: 0.3 is the most mixed
Close, obtain mixed-powder.
Wherein: under conditions of 1550 DEG C, mixed-powder is carried out secondary high-temperature calcining, mixed-powder ultimately forms glass
Form solidfied material.
Wherein: the harmful substance that heavy metal, arsenide etc. are difficult to decompose is fixed in glass form solidfied material, glass shape
State solidfied material sample makees toxicity leaching experiment by GB5805.3-2007, meets national requirements for environmental protection, can be used for construction material or straight
Connect landfill.
Wherein: it is that whole system is powered that the steam that high-temperature incinerator produces will be used for Turbo-generator Set.
Wherein: system institute subfam. Spiraeoideae own is about Turbo-generator Set and produces about the 75% of electricity.
Wherein: the flue gas that high-temperature incinerator produces enters sludge drying device, utilizes the heat of flue gas self to enter mud
Row drying and other treatment.
Wherein: flue gas enters flue gas purification system after sludge drying device, finally discharges.
Wherein: flue gas purification system includes denitrating flue gas, electrostatic precipitation, flue gas desulfurization three part.
Present invention process can efficiently solve the secondary pollution problem of municipal sludge, is capable of municipal sludge simultaneously
Innoxious, minimizing, stabilisation, recycling treatment.
Accompanying drawing explanation
Accompanying drawing is the system flow chart of present invention process.
Detailed description of the invention
The present invention to be embodied as step as follows:
(1) it is 52%～56% with super-pressure filter press press filtration municipal sludge to moisture content；By super-pressure filter press press filtration
After mud pulverize；Mud after pulverizing is carried out drying and other treatment；Mud after drying and other treatment is ground to 200 mesh；After grinding
Mud enters high-temperature incinerator, burns mud, the thorough combustion decomposition of organic matter in mud under conditions of 1200 DEG C
And produce amount of heat；By the mud after above-mentioned high temperature incineration and CaO powder and SiO2Powder in mass ratio 1: 0.05: 0.3 fills
Divide mixing, obtain mixed-powder；Mixed powder enters secondary high-temperature incinerator, to mixed-powder under conditions of 1550 DEG C
Carrying out secondary high-temperature calcining, mixed-powder ultimately forms glass form solidfied material, and it is harmful that heavy metal, arsenide etc. are difficult to decompose
Material is fixed in wherein, and glass form solidfied material sample makees toxicity leaching experiment by GB5805.3-2007, meets country's ring
Guaranteed request, can be used for construction material or directly fills.
(2) steam that high-temperature incinerator produces will be used for Turbo-generator Set is that whole system is powered；Municipal sludge itself
Calorific value is higher, and its dry base heat value average is about 11850kJ/kg, and system institute subfam. Spiraeoideae own is about Turbo-generator Set and produces electricity
About 75%.
(3) flue gas that high-temperature incinerator produces enters sludge drying device, utilizes the heat of flue gas self to carry out mud
Drying and other treatment；Flue gas enters flue gas purification system after sludge drying device, finally discharges；Flue gas purification system includes flue gas
Denitration, electrostatic precipitation, flue gas desulfurization three part.
Embodiment 1 Nanjing municipal sewage plant municipal sludge
This municipal sludge dry base heat value is about 12730kJ/kg, and moisture content is 84%.1000 kilograms of this municipal sludge generatings
Amount is 218.1 degree of electricity, and the power consumption of system own is 158.6 degree of electricity (the 72.7% of the generated energy of the system that accounts for own).
Before and after table 1 municipal sludge integrated treatment, harmful substance leaching concentration compares
From upper table data analysis, present invention process can effectively remove all kinds of nuisances in this municipal sludge
Matter, end product is made toxicity leaching experiment by GB5805.3-2007, is met national requirements for environmental protection, can be used for construction material or straight
Connect landfill.
Embodiment 2 Wuxi municipal sewage plant municipal sludge
This municipal sludge dry base heat value is about 10360kJ/kg, and moisture content is 80%.1000 kilograms of this municipal sludge generatings
Amount is 221.9 degree of electricity, and the power consumption of system own is 169.2 degree of electricity (the 76.3% of the generated energy of the system that accounts for own).
Before and after table 2 is vitrification solidifying, harmful substance leaching concentration compares
From upper table data analysis, present invention process can effectively remove all kinds of nuisances in this municipal sludge
Matter, end product is made toxicity leaching experiment by GB5805.3-2007, is met national requirements for environmental protection, can be used for construction material or straight
Connect landfill.
Claims (14)
1. the invention provides a kind of municipal sludge comprehensive processing technique, it is characterised in that:
(1) it is 52%～56% with super-pressure filter press press filtration municipal sludge to moisture content；After super-pressure filter press press filtration
Mud is pulverized；Mud after pulverizing is carried out drying and other treatment；Mud after drying and other treatment is ground to 200 mesh；Mud after grinding
Entering high-temperature incinerator, burn mud under conditions of 1200 DEG C, the thorough combustion decomposition of organic matter in mud is also produced
Raw amount of heat；By the mud after above-mentioned high temperature incineration and CaO powder and SiO2Powder in mass ratio 1: 0.05: 0.3 is the most mixed
Close, obtain mixed-powder；Mixed powder enters secondary high-temperature incinerator, carries out mixed-powder under conditions of 1550 DEG C
Secondary high-temperature is calcined, and mixed-powder ultimately forms glass form solidfied material, and heavy metal, arsenide etc. are difficult to the harmful substance decomposed
Being fixed in wherein, glass form solidfied material sample makees toxicity leaching experiment by GB5805.3-2007, meets national environmental protection and wants
Ask, can be used for construction material or directly fill.
(2) steam that high-temperature incinerator produces will be used for Turbo-generator Set is that whole system is powered；The calorific value of municipal sludge own
Higher, its dry base heat value average is about 11850kJ/kg, and system institute subfam. Spiraeoideae own is about Turbo-generator Set and produces electricity
About 75%.
(3) flue gas that high-temperature incinerator produces enters sludge drying device, utilizes the heat of flue gas self that mud is carried out mummification
Process；Flue gas enters flue gas purification system after sludge drying device, finally discharges；Flue gas purification system includes that flue gas takes off
Nitre, electrostatic precipitation, flue gas desulfurization three part.
Municipal sludge comprehensive processing technique the most according to claim 1, it is characterised in that: super-pressure filter press press filtration need to be used
Municipal sludge to moisture content is 52%～56%.
Municipal sludge comprehensive processing technique the most according to claim 1, it is characterised in that: need to be by super-pressure filter press press filtration
After mud pulverize.
Municipal sludge comprehensive processing technique the most according to claim 1, it is characterised in that: mud after pulverizing need to be done
Change processes.
Municipal sludge comprehensive processing technique the most according to claim 1, it is characterised in that: need to be by the mud after drying and other treatment
It is ground to 200 mesh.
Municipal sludge comprehensive processing technique the most according to claim 1, it is characterised in that: the mud after grinding enters high temperature
Incinerator, burns mud under conditions of 1200 DEG C, the thorough combustion decomposition of organic matter produce amount of heat in mud.
Municipal sludge comprehensive processing technique the most according to claim 1, it is characterised in that: need to be by the mud after high temperature incineration
With CaO powder and SiO2Powder in mass ratio 1: 0.05: 0.3 is sufficiently mixed, and obtains mixed-powder.
Municipal sludge comprehensive processing technique the most according to claim 1, it is characterised in that: to mixed under conditions of 1550 DEG C
Closing powder and carry out secondary high-temperature calcining, mixed-powder ultimately forms glass form solidfied material.
Municipal sludge comprehensive processing technique the most according to claim 1, it is characterised in that: heavy metal, arsenide etc. are difficult to
The harmful substance decomposed is fixed in glass form solidfied material, and glass form solidfied material sample is pressed GB5805.3-2007 and made poison
Property leaching experiment, meets national requirements for environmental protection, can be used for construction material or directly fill.
Municipal sludge comprehensive processing technique the most according to claim 1, it is characterised in that: the steaming that high-temperature incinerator produces
It is that whole system is powered that vapour will be used for Turbo-generator Set.
11. municipal sludge comprehensive processing techniques according to claim 1, it is characterised in that: system institute subfam. Spiraeoideae own is about
About the 75% of electricity is produced for Turbo-generator Set.
12. municipal sludge comprehensive processing techniques according to claim 1, it is characterised in that: the cigarette that high-temperature incinerator produces
Gas enters sludge drying device, utilizes the heat of flue gas self that mud is carried out drying and other treatment.
13. municipal sludge comprehensive processing techniques according to claim 1, it is characterised in that: flue gas sets through sludge drying
Standby rear entrance flue gas purification system, finally discharges.
14. municipal sludge comprehensive processing techniques according to claim 1, it is characterised in that: flue gas purification system includes cigarette
Qi exhaustion nitre, electrostatic precipitation, flue gas desulfurization three part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610235458.4A CN105859090A (en) | 2016-04-11 | 2016-04-11 | Civil sludge comprehensive treatment process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610235458.4A CN105859090A (en) | 2016-04-11 | 2016-04-11 | Civil sludge comprehensive treatment process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105859090A true CN105859090A (en) | 2016-08-17 |
Family
ID=56632204
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610235458.4A Pending CN105859090A (en) | 2016-04-11 | 2016-04-11 | Civil sludge comprehensive treatment process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105859090A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113528211A (en) * | 2021-08-24 | 2021-10-22 | 安徽省通源环境节能股份有限公司 | A kind of municipal sludge high temperature self-sustaining incineration system and process |
| CN114713189A (en) * | 2022-03-15 | 2022-07-08 | 东华大学 | A kind of preparation method of rice wine sludge biochar |
| CN115028329A (en) * | 2022-07-11 | 2022-09-09 | 沈阳理工大学 | A method and system for comprehensive utilization of sludge flue gas thermal catalytic decomposition, separation and drying |
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| US4793933A (en) * | 1987-11-16 | 1988-12-27 | Rostoker, Inc. | Waste treatment method for metal hydroxide electroplating sludges |
| CN1289737A (en) * | 1999-09-28 | 2001-04-04 | 诺利塔克股份有限公司 | Ceramics containing crystal of andalusite with rich aluminum content and manufacture thereof |
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-
2016
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113528211A (en) * | 2021-08-24 | 2021-10-22 | 安徽省通源环境节能股份有限公司 | A kind of municipal sludge high temperature self-sustaining incineration system and process |
| CN114713189A (en) * | 2022-03-15 | 2022-07-08 | 东华大学 | A kind of preparation method of rice wine sludge biochar |
| CN115028329A (en) * | 2022-07-11 | 2022-09-09 | 沈阳理工大学 | A method and system for comprehensive utilization of sludge flue gas thermal catalytic decomposition, separation and drying |
| CN115028329B (en) * | 2022-07-11 | 2023-08-11 | 沈阳理工大学 | Comprehensive utilization method and system for thermal catalytic decomposition, separation and drying of sludge flue gas |
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Application publication date: 20160817 |