CN104355511A - Sludge pyrohydrolysis method and sludge pyrohydrolysis system - Google Patents
Sludge pyrohydrolysis method and sludge pyrohydrolysis system Download PDFInfo
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- CN104355511A CN104355511A CN201410573852.XA CN201410573852A CN104355511A CN 104355511 A CN104355511 A CN 104355511A CN 201410573852 A CN201410573852 A CN 201410573852A CN 104355511 A CN104355511 A CN 104355511A
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- sludge
- mud
- pyrohydrolysis
- hydrolysis
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- 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
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- 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
- C02F11/10—Treatment of sludge; Devices therefor by pyrolysis
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- 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
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention relates to a sludge pyrohydrolysis method and a sludge pyrohydrolysis system, belongs to the field of treatment of a sewage plant, and particularly relates to the field of treatment of sludge of a sewage treatment product. To solve the problem that most of organic matters are not removed with an existing method, the invention provides the sludge pyrohydrolysis method and the sludge pyrohydrolysis system. The method comprises the processes of sludge slurrying, sludge pyrohydrolysis, sludge decompressed flash, sludge digestion, and centrifugal dewatering, wherein the process of sludge slurrying adopts a pump stirring mode, the temperature in a slurrying tank is kept at 97 DEG C; saturated steam heats a pyrohydrolysis tank to rapidly rise the temperature to be 165-190 DEG C in the process of sludge pyrohydrolysis, the pyrohydrolysis process lasts for 90 min, wherein the time for sludge charge is 15 min, the time for sludge discharge is 15 min, the steam is introduced for about 15 min, the pyrohydrolysis reaction is about 30 min, and the air is exhausted for 15 min; in the flash process, the pressure of a flash tank is kept at 0.1-0.3 MPa and the balance temperature is 102 DEG C; the time for sludge digestion is 15 days. The method and the system use the modes of pyrohydrolysis and flash, the organic matters in the sludge are effectively removed, meanwhile, the time for sludge digestion is shortened, and the sludge treatment efficiency is improved.
Description
Technical field
The invention belongs to Sewage Plant process field, particularly relate to sewage disposal product field of sludge treatment.
Background technology
Along with China's level of urbanization improves constantly, sewage treatment facility obtains high speed development, a large amount of excess sludges can be produced in municipal sewage treatment process, sludge treatment situation is very severe, how to process disposal sewage treatment plant residual mud to make it to turn waste into wealth, reach the minimizing of mud, innoxious and resource utilization cost-effectively, become my important topic faced.
At present, conventional treatment process is mesophilic anaerobic digestion, can reduce the weight and volume of mud on the one hand, can reclaim the biomass energy in mud on the other hand with the form of biogas.But the organism major part in mud is cellular material, is difficult to be utilized by microorganism.
Summary of the invention
The object of this invention is to provide one can effectively organic thermal hydrolysis method and system thereof in lignin-sludge.
The present invention is achieved by the following technical programs: a kind of sludge hot method for hydrolysis, comprise mud pulp, sludge hot hydrolysis, mud pressure release flash distillation, Sludge Digestion and centrifuge dehydration process, described mud slurrying process adopts pump alr mode, and in pulp tank, temperature remains on 97 DEG C; In described sludge hot hydrolytic process, saturation steam heat hot hydrolytic decomposition pot, make its temperature rise to rapidly 165 ~ 190 DEG C, pyrohydrolysis process continues 90min, and Qi Zhongjin, spoil disposal be about 15min respectively, and logical steam is about 15min, and thermal hydrolysis reacts about 30min, exhaust 15min; In flash vaporization process, flash tank pressure remains on 0.1 ~ 0.3MPa, and equilibrium temperature is 102 DEG C; The described Sludge Digestion time is 15 days.
Buffer Pool is provided with in described sludge hot hydrolysis and sludge hot flash vaporization process.
Be provided with heat exchanger in described mud flash distillation and sludge digestion process, ensure that mud temperature enters digestion process after being down to 37 ~ 40 DEG C.
The present invention also provides a kind of system being applied to above-mentioned sludge hot method for hydrolysis, comprise the mud pulp tank, sludge hot hydrolytic decomposition pot, Buffer Pool, mud flash tank, heat exchanger, sludge digestion tank and the centrifugal dehumidifier that are connected successively, described sludge hot hydrolytic decomposition pot is communicated with mud pulp tank with mud flash tank waste hot gas.
Described sludge hot hydrolytic decomposition pot is multiple, mutually adopts parallel way to connect, and adopts intermittent mode to enter mud.
The present invention has following beneficial effect:
Adopt thermal hydrolysis to add flash distillation mode, can effectively remove organism in mud, reduce the sludge digestion time simultaneously, improve sludge treatment efficiency.
Embodiment
The present invention is described further by the following examples.
Specific embodiment: mud slurrying process mainly carries out in mud pulp tank, for reclaiming the waste hot gas in thermal hydrolysis and flash vaporization process, preheating pulp is carried out to raw sludge, strengthen the mobility of mud, reduce the energy consumption of pyrohydrolysis process, adopt pump alr mode, in pulp tank, temperature is about 97 DEG C, after entering thermal hydrolysis tank from pulp tank mud out, pass into saturated hot steam, make mud temperature rise to rapidly 165 ~ 190 DEG C.There is the thermal hydrolysis reaction of mud, macromole, oarse-grained organic substance decomposing are micromolecular organism, this tank adopts intermittent mode to enter mud, whole treating processes continues about 90min, Qi Zhongjin, spoil disposal respectively about 15min, and logical steam is about 15min, thermal hydrolysis reacts about 30min, exhaust 15min, by arranging the thermal hydrolysis tank of multiple parallel connection, keeps the operate continuously of whole thermal hydrolysis system.Mud after thermal hydrolysis stores in Buffer Pool, to be input to subsequent processing units continuously.The mud stored enters mud flash tank, and mud flash tank internal pressure is 0.1 ~ 0.3MPa, and equilibrium temperature is 102 DEG C, due to pressure change, the mud of larger particles is by explosion under interior pressure effect, and mud granule diminishes, and is convenient to the digestion process of follow-up mud, before entering digestion process, mud enters heat exchange tank cooling, enters sludge digestion tank again, through the reaction of 15d after making mud temperature be down to 37 ~ 40 DEG C, again through centrifuge dehydration, obtain solid impurity.
Compared by test and draw, traditional sludge digestion process, its dry solid content is 22%; After present method process, the dry solid content of mud can reach 30% ~ 32%; Through traditional mesophilic anaerobic digestion method, mud overall suspended pellet clearance is 20% ~ 25%, and after present method process, mud overall suspended pellet clearance can reach 45% ~ 48%.
Method for sludge treatment described in the embodiment of the present invention and system thereof, adopt thermal hydrolysis to add flash distillation again through digestion process.Sludge treatment effect and efficiency are significantly improved.
above content is the further description done the present invention in conjunction with concrete embodiment, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, some simple deduction or replace can also be made, all should be considered as belonging to protection scope of the present invention.
Claims (5)
1. a sludge hot method for hydrolysis, is characterized in that: comprise mud pulp, sludge hot hydrolysis, mud pressure release flash distillation, Sludge Digestion and centrifuge dehydration process, and described mud slurrying process adopts pump alr mode, and in pulp tank, temperature remains on 97 DEG C; In described sludge hot hydrolytic process, saturation steam heat hot hydrolytic decomposition pot, make its temperature rise to rapidly 165 ~ 190 DEG C, pyrohydrolysis process continues 90min, each 15min of Qi Zhongjin, spoil disposal, and logical steam is about 15min, and thermal hydrolysis reacts about 30min, exhaust 15min; In flash vaporization process, flash tank pressure remains on 0.1 ~ 0.3MPa, and equilibrium temperature is 102 DEG C; The described Sludge Digestion time is 15 days.
2. sludge hot method for hydrolysis as claimed in claim 1, is characterized in that: be provided with Buffer Pool in described sludge hot hydrolysis and sludge hot flash vaporization process.
3. sludge hot method for hydrolysis as claimed in claim 1, is characterized in that: be provided with heat exchanger in described sludge hot flash distillation and sludge digestion process, ensures that mud temperature enters digestion process after being down to 37 ~ 40 DEG C.
4. one kind as arbitrary in claims 1 to 3 as described in sludge hot method for hydrolysis in the sludge hot hydrolysis system that uses, it is characterized in that: comprise the mud pulp tank, sludge hot hydrolytic decomposition pot, Buffer Pool, mud flash tank, heat exchanger, sludge digestion tank and the centrifugal dehumidifier that are connected successively, described sludge hot hydrolytic decomposition pot is communicated with mud pulp tank with mud flash tank waste hot gas.
5. sludge hot hydrolysis system as claimed in claim 4, is characterized in that: described sludge hot hydrolytic decomposition pot is multiple, mutually adopts parallel way to connect, and adopts intermittent mode to enter mud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410573852.XA CN104355511A (en) | 2014-10-24 | 2014-10-24 | Sludge pyrohydrolysis method and sludge pyrohydrolysis system |
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|---|---|---|---|
| CN201410573852.XA CN104355511A (en) | 2014-10-24 | 2014-10-24 | Sludge pyrohydrolysis method and sludge pyrohydrolysis system |
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| CN104355511A true CN104355511A (en) | 2015-02-18 |
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| CN201410573852.XA Pending CN104355511A (en) | 2014-10-24 | 2014-10-24 | Sludge pyrohydrolysis method and sludge pyrohydrolysis system |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104891766A (en) * | 2015-06-10 | 2015-09-09 | 北京洁绿科技发展有限公司 | Sludge pyrohydrolysis device and method |
| CN105330112A (en) * | 2015-10-23 | 2016-02-17 | 北京交通大学 | Pharmacy sludge treatment device and method thereof |
| CN106007274A (en) * | 2016-05-14 | 2016-10-12 | 合肥中盛水务发展有限公司 | Deep treatment method of sludge |
| CN106242209A (en) * | 2016-08-31 | 2016-12-21 | 海南兴能泰环境科技有限公司 | Municipal sewage and mud work in coordination with the method and device of circular treatment |
| CN106587561A (en) * | 2016-12-07 | 2017-04-26 | 广东昕旺环保科技发展有限公司 | Sludge pyrohydrolysis and gasification processing system and treatment process thereof |
| CN106830587A (en) * | 2017-01-19 | 2017-06-13 | 同济大学 | It is a kind of to strengthen the method for explaining phosphorus containing solid sludge high temperature hot water high |
| CN106904807A (en) * | 2017-03-31 | 2017-06-30 | 同济大学 | A kind of method that phosphorus is reclaimed from dewatered sludge |
| CN107010809A (en) * | 2017-05-27 | 2017-08-04 | 四川省科学城中心科技有限公司 | A kind of multi-stage, efficient flash distillation sludge dewatering treatment system and method |
| CN109205992A (en) * | 2018-10-29 | 2019-01-15 | 长沙理工大学 | Biological sludge heating and pyrohydrolysis system and technique |
| CN109422436A (en) * | 2017-08-17 | 2019-03-05 | 蓝德环保科技集团股份有限公司 | A kind of method of hot acidizing reinforcement sludge dehydration |
| CN110358541A (en) * | 2019-08-22 | 2019-10-22 | 科蓝博(北京)环境技术有限公司 | A kind of sludge soil conditioner and preparation method thereof and device |
| CN111439906A (en) * | 2020-03-17 | 2020-07-24 | 四川深蓝环保科技有限公司 | Biogas residue circulating hydrothermal reduction system and technology |
| CN112094015A (en) * | 2020-09-01 | 2020-12-18 | 西安联创分布式可再生能源研究院有限公司 | Continuous sludge pyrohydrolysis system and process capable of efficiently and fully pyrohydrolyzing |
| CN114477684A (en) * | 2022-01-27 | 2022-05-13 | 浙江天地环保科技股份有限公司 | Hydrothermal flash evaporation device and method for anaerobic digestion biogas residues |
-
2014
- 2014-10-24 CN CN201410573852.XA patent/CN104355511A/en active Pending
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104891766B (en) * | 2015-06-10 | 2017-01-25 | 北京洁绿科技发展有限公司 | Sludge pyrohydrolysis device and method |
| CN104891766A (en) * | 2015-06-10 | 2015-09-09 | 北京洁绿科技发展有限公司 | Sludge pyrohydrolysis device and method |
| CN105330112A (en) * | 2015-10-23 | 2016-02-17 | 北京交通大学 | Pharmacy sludge treatment device and method thereof |
| CN106007274B (en) * | 2016-05-14 | 2018-10-09 | 合肥中盛水务发展有限公司 | A kind of deep treatment method of sludge |
| CN106007274A (en) * | 2016-05-14 | 2016-10-12 | 合肥中盛水务发展有限公司 | Deep treatment method of sludge |
| CN106242209A (en) * | 2016-08-31 | 2016-12-21 | 海南兴能泰环境科技有限公司 | Municipal sewage and mud work in coordination with the method and device of circular treatment |
| CN106587561A (en) * | 2016-12-07 | 2017-04-26 | 广东昕旺环保科技发展有限公司 | Sludge pyrohydrolysis and gasification processing system and treatment process thereof |
| CN106830587A (en) * | 2017-01-19 | 2017-06-13 | 同济大学 | It is a kind of to strengthen the method for explaining phosphorus containing solid sludge high temperature hot water high |
| CN106904807A (en) * | 2017-03-31 | 2017-06-30 | 同济大学 | A kind of method that phosphorus is reclaimed from dewatered sludge |
| CN107010809A (en) * | 2017-05-27 | 2017-08-04 | 四川省科学城中心科技有限公司 | A kind of multi-stage, efficient flash distillation sludge dewatering treatment system and method |
| CN109422436A (en) * | 2017-08-17 | 2019-03-05 | 蓝德环保科技集团股份有限公司 | A kind of method of hot acidizing reinforcement sludge dehydration |
| CN109422436B (en) * | 2017-08-17 | 2022-07-29 | 蓝德环保科技集团股份有限公司 | Method for strengthening sludge dewatering through thermal acid treatment |
| CN109205992A (en) * | 2018-10-29 | 2019-01-15 | 长沙理工大学 | Biological sludge heating and pyrohydrolysis system and technique |
| CN109205992B (en) * | 2018-10-29 | 2021-12-31 | 长沙理工大学 | Biological sludge heating and pyrohydrolysis system and process |
| CN110358541A (en) * | 2019-08-22 | 2019-10-22 | 科蓝博(北京)环境技术有限公司 | A kind of sludge soil conditioner and preparation method thereof and device |
| CN110358541B (en) * | 2019-08-22 | 2020-12-18 | 科蓝博(北京)环境技术有限公司 | Sludge soil conditioner and preparation method and device thereof |
| CN111439906A (en) * | 2020-03-17 | 2020-07-24 | 四川深蓝环保科技有限公司 | Biogas residue circulating hydrothermal reduction system and technology |
| CN112094015A (en) * | 2020-09-01 | 2020-12-18 | 西安联创分布式可再生能源研究院有限公司 | Continuous sludge pyrohydrolysis system and process capable of efficiently and fully pyrohydrolyzing |
| CN114477684A (en) * | 2022-01-27 | 2022-05-13 | 浙江天地环保科技股份有限公司 | Hydrothermal flash evaporation device and method for anaerobic digestion biogas residues |
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Application publication date: 20150218 |