CN105859090A - Civil sludge comprehensive treatment process - Google Patents

Civil sludge comprehensive treatment process Download PDF

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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
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CN
China
Prior art keywords
mud
flue gas
municipal sludge
sludge
powder
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Pending
Application number
CN201610235458.4A
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Chinese (zh)
Inventor
娈疯
殷衡
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Individual
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Individual
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Priority to CN201610235458.4A priority Critical patent/CN105859090A/en
Publication of CN105859090A publication Critical patent/CN105859090A/en
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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

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

Municipal sludge comprehensive processing technique
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.
CN201610235458.4A 2016-04-11 2016-04-11 Civil sludge comprehensive treatment process Pending CN105859090A (en)

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Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN201610235458.4A CN105859090A (en) 2016-04-11 2016-04-11 Civil sludge comprehensive treatment process

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114713189A (en) * 2022-03-15 2022-07-08 东华大学 Preparation method of yellow rice wine sludge biochar
CN115028329A (en) * 2022-07-11 2022-09-09 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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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
KR20010045615A (en) * 1999-11-05 2001-06-05 김덕중 Device for the treatment of the sludge by burning and melting
JP2003146784A (en) * 2001-11-07 2003-05-21 Nkk Corp Method of manufacturing melt solidified body
CN1733629A (en) * 2005-07-08 2006-02-15 浙江大学 Method for integrating drying sludge using remaining heat of flume from power plant by rubbish and electricity generation using sludge
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CN103090396A (en) * 2012-12-06 2013-05-08 上海金自天正信息技术有限公司 Two-stage drying and incineration method for sludge
CN105402740A (en) * 2015-12-31 2016-03-16 山东美陵中联环境工程有限公司 Sludge high-pressure drying and incineration treatment system

Patent Citations (8)

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Publication number Priority date Publication date Assignee Title
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
KR20010045615A (en) * 1999-11-05 2001-06-05 김덕중 Device for the treatment of the sludge by burning and melting
JP2003146784A (en) * 2001-11-07 2003-05-21 Nkk Corp Method of manufacturing melt solidified body
CN1733629A (en) * 2005-07-08 2006-02-15 浙江大学 Method for integrating drying sludge using remaining heat of flume from power plant by rubbish and electricity generation using sludge
CN102531318A (en) * 2011-12-06 2012-07-04 华北电力大学（保定） Sludge drying and incinerating integrated zero-discharge treatment system and treatment process
CN103090396A (en) * 2012-12-06 2013-05-08 上海金自天正信息技术有限公司 Two-stage drying and incineration method for sludge
CN105402740A (en) * 2015-12-31 2016-03-16 山东美陵中联环境工程有限公司 Sludge high-pressure drying and incineration treatment system

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114713189A (en) * 2022-03-15 2022-07-08 东华大学 Preparation method of yellow rice wine sludge biochar
CN115028329A (en) * 2022-07-11 2022-09-09 沈阳理工大学 Comprehensive utilization method and system for thermal catalytic decomposition, separation and drying of sludge flue gas
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