CN106396313A - Non-catalytic wet oxidation treatment method of municipal sludge - Google Patents

Non-catalytic wet oxidation treatment method of municipal sludge Download PDF

Info

Publication number
CN106396313A
CN106396313A CN201611067940.8A CN201611067940A CN106396313A CN 106396313 A CN106396313 A CN 106396313A CN 201611067940 A CN201611067940 A CN 201611067940A CN 106396313 A CN106396313 A CN 106396313A
Authority
CN
China
Prior art keywords
municipal sludge
reactor
wet oxidation
catalytic wet
temperature
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
Application number
CN201611067940.8A
Other languages
Chinese (zh)
Inventor
张守玉
张帆
张一帆
黄小河
李�昊
王才威
江锋浩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Shanghai for Science and Technology
Original Assignee
University of Shanghai for Science and Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by University of Shanghai for Science and Technology filed Critical University of Shanghai for Science and Technology
Priority to CN201611067940.8A priority Critical patent/CN106396313A/en
Publication of CN106396313A publication Critical patent/CN106396313A/en
Pending legal-status Critical Current

Links

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
    • 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
    • C02F11/02—Biological treatment
    • C02F11/04—Anaerobic treatment; Production of methane by such processes
    • 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
    • C02F11/06—Treatment of sludge; Devices therefor by oxidation
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/02—Temperature
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/03—Pressure
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2209/00—Controlling or monitoring parameters in water treatment
    • C02F2209/44—Time
    • 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
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00—Technologies for wastewater treatment
    • Y02W10/20—Sludge processing

Abstract

The invention relates to a non-catalytic wet oxidation treatment method of municipal sludge. No catalysts are needed in the method. The non-catalytic wet oxidation treatment method of municipal sludge comprises the following steps: 1, taking the municipal sludge, and carrying out anaerobic fermentation; 2, carrying out refrigerated storage on the anaerobic fermented municipal sludge; 3, heating the refrigerated stored municipal sludge, and uniformly stirring the heated municipal sludge; 4, taking a certain volume of the municipal sludge obtained in step 3, heating the municipal sludge, uniformly stirring the municipal sludge, and keeping the temperature of the municipal sludge; 5, preheating a reactor; 6, taking a certain volume of deionized water, and adding the deionized water into the reactor; 7, introducing pure oxygen to the reactor, and pressurizing the reactor; and 8, sending the municipal sludge obtained in step 4 into the reactor with pure nitrogen as a carrier gas, and carrying out a reaction. The non-catalytic wet oxidation treatment method of municipal sludge has the advantages of simple process flow, short treatment cycle, and satisfactory solving of the problem of environment pollution brought by traditional sludge treatment modes.

Description

A kind of processing method of municipal sludge non-catalytic wet oxidation
Technical field
The present invention relates to the technical field of environmental pollution improvement is and in particular to a kind of place of municipal sludge non-catalytic wet oxidation Reason method.
Background technology
With the quickening of Re-search on Urbanization process, the discharge capacity of China's municipal sewage grows with each passing day.Municipal sludge is as dirt Secondary product in water treatment procedure also increases rapidly therewith.
Data analysiss are had to show, the annual dewatered sludge amount of China alreadys exceed 32,000,000 tons, and at present still with annual 5% ～10% speed increases.In the developed countries such as America and Europe, municipal sludge treatment technology relative maturity, but the city of China is dirty Mud treatment technology is still in developmental stage.Therefore, how rationally and effectively to process mud become we one very urgent Problem.
At present, the traditional treatment method of China's municipal sludge mainly has landfill, burning and recycling.Using filling out The method buried processes municipal sludge, can make harmful substance in mud that soil is polluted, the moisture penetration in mud causes Underground water pollution；Process municipal sludge using the method burned, investment is big and equipment running cost is high, also can produce two during burning The extremely toxic substances such as English；Process municipal sludge using resource utilization method：Such as making brick from sludge or sludge composting.Making brick from sludge Because water content is higher in mud, lead to brickmaking energy consumption higher, and the brick quality being obtained is low, also can produce in sintering procedure Malicious harmful gass.Sludge composting need to be processed to meet the requirement of Agricultural Fertilizer to mud, and processing cost is higher.In aforementioned manners Process municipal sludge and there is certain defect, and once deal with improperly it is also possible to secondary pollution is caused to environment.
Content of the invention
The present invention is to carry out to solve the above problems it is therefore intended that providing a kind of municipal sludge non-catalytic wet oxidation Processing method.
The processing method of the municipal sludge non-catalytic wet oxidation that the present invention provides, has the feature that, walks including following Suddenly：Step one, takes municipal sludge, carries out anaerobic fermentation pretreatment；Step 2, by pretreated municipal sludge in cryogenic temperature Lower storage 48h, cryogenic temperature is any one value in -30～-10 DEG C；Step 3, the municipal sludge that step 2 is obtained is warming up to Assigned temperature, opens magnetic stirrer 2h it is intended that temperature is any one value in 0～20 DEG C；Step 4, takes certain volume The municipal sludge that step 3 obtains is heated to thermostat temperature, opens magnetic stirrer 2h, is then incubated under thermostat temperature 5min, thermostat temperature is any one value in 50～90 DEG C；Step 5, reactor is preheating to preheating temperature, and preheating temperature is 200 Any one value in～300 DEG C；Step 6, takes the deionized water of certain volume, adds in reactor, deionized water and step 4 institute The volume ratio of the municipal sludge taking is 5:3；Step 7, is passed through pure oxygen gas in reactor, and reactor is pressurized to a level pressure Power, certain pressure is any one value in 20～40bar, the volume ratio of the municipal sludge that pure oxygen gas and step 4 are taken be (1～ 3)：1；Step 8, is sent into the municipal sludge that step 4 obtains in reactor as vector gas using purity nitrogen and is reacted, reaction Time is any one value in 1～90min.
In the processing method of the municipal sludge non-catalytic wet oxidation that the present invention provides, can also have the feature that： Wherein, step 2 cryogenic temperature is -20 DEG C.
In the processing method of the municipal sludge non-catalytic wet oxidation that the present invention provides, can also have the feature that： Wherein, step 3 assigned temperature is 4 DEG C.
In the processing method of the municipal sludge non-catalytic wet oxidation that the present invention provides, can also have the feature that： Wherein, step 4 thermostat temperature is 90 DEG C.
In the processing method of the municipal sludge non-catalytic wet oxidation that the present invention provides, can also have the feature that： Wherein, any one value during step 5 preheating temperature is 220～230 DEG C.
In the processing method of the municipal sludge non-catalytic wet oxidation that the present invention provides, can also have the feature that： Wherein, in step 7, certain pressure is 30bar.
In the processing method of the municipal sludge non-catalytic wet oxidation that the present invention provides, can also have the feature that： Wherein, the step 8 response time is 60min.
The effect of invention and effect
The processing method of municipal sludge non-catalytic wet oxidation involved in the present invention, need not add catalyst, technological process Simply, process cycle is short, the problems such as can preferably solve the environmental pollution that traditional sludge processing mode is brought, decreases mud Floor space, does not produce secondary pollution, and the present invention also is adapted for industrial application.The present invention rationally effectively locating in municipal sludge Have important practical significance and economic value in reason.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the present invention realizes are easy to understand, real below Apply example the processing method of municipal sludge non-catalytic wet oxidation of the present invention is specifically addressed.
In embodiment, municipal sludge is taken from Minhang District, Shanghai sewage treatment plant, for obtaining in life sewage disposal process The municipal sludge arriving.Wherein, preliminary sludge refers to eliminate in sewage the mud of the solid pollution material being in suspended state；Secondary Mud refers to eliminate in sewage the mud of the organic pollution materials being in colloid and dissolved state.In embodiment, laboratory sample is first Level mud is formulated according to different proportion with secondary sludge.
Reactor employed in embodiment is parr reactor.This is by the development and production of Parr company of the U.S. of manufacturer A kind of autoclave, is widely used in the fields such as petrochemical industry, chemistry, pharmacy and Polymer Synthesizing.Adopt in the present embodiment Parr reactor model carries 4540 high-pressure reactors of 4848 controllers.
<Embodiment one>
Step 1, prepares and contains 40% preliminary sludge, the municipal sludge of 60% secondary sludge, carry out anaerobic fermentation pretreatment.
Step 2, pretreated municipal sludge is put into storage 48h at -20 DEG C.
Step 3, the municipal sludge that step 2 is obtained is warming up to 4 DEG C, opens magnetic stirrer 2h.
Step 4, takes the municipal sludge that the step 3 of 150ml obtains to be heated to 90 DEG C, opens magnetic stirrer 2h, so It is incubated 5min afterwards at 90 DEG C.
Step 5, reactor is preheating to 220 DEG C；
Step 6, takes the deionized water of 250ml, adds in reactor.
Step 7, is passed through pure oxygen gas 150ml in reactor, reactor is pressurized to 30bar.
Step 8, in the municipal sludge feeding reactor being obtained step 4 as vector gas using purity nitrogen, the response time is 30min.
<Embodiment two>
Step 1, prepares and contains 40% preliminary sludge, the municipal sludge of 60% secondary sludge, carry out anaerobic fermentation pretreatment.
Step 2, pretreated municipal sludge is put into storage 48h at -20 DEG C.
Step 3, the municipal sludge that step 2 is obtained is warming up to 4 DEG C, opens magnetic stirrer 2h.
Step 4, takes the municipal sludge that the step 3 of 150ml obtains to be heated to 90 DEG C, opens magnetic stirrer 2h, so It is incubated 5min afterwards at 90 DEG C.
Step 5, reactor is preheating to 230 DEG C；
Step 6, takes the deionized water of 250ml, adds in reactor.
Step 7, is passed through pure oxygen gas 300ml in reactor, reactor is pressurized to 30bar.
Step 8, in the municipal sludge feeding reactor being obtained step 4 as vector gas using purity nitrogen, the response time is 60min.
<Embodiment three>
Step 1, prepares and contains 40% preliminary sludge, the municipal sludge of 60% secondary sludge, carry out anaerobic fermentation pretreatment.
Step 2, pretreated municipal sludge is put into storage 48h at -20 DEG C.
Step 3, the municipal sludge that step 2 is obtained is warming up to 4 DEG C, opens magnetic stirrer 2h.
Step 4, takes the municipal sludge that the step 3 of 150ml obtains to be heated to 90 DEG C, opens magnetic stirrer 2h, so It is incubated 5min afterwards at 90 DEG C.
Step 5, reactor is preheating to 240 DEG C；
Step 6, takes the deionized water of 250ml, adds in reactor.
Step 7, is passed through pure oxygen gas 225ml in reactor, reactor is pressurized to 30bar.
Step 8, in the municipal sludge feeding reactor being obtained step 4 as vector gas using purity nitrogen, the response time is 45min.
<Example IV>
Step 1, prepares and contains 60% preliminary sludge, the municipal sludge of 40% secondary sludge, carry out anaerobic fermentation pretreatment.
Step 2, pretreated municipal sludge is put into storage 48h at -20 DEG C.
Step 3, the municipal sludge that step 2 is obtained is warming up to 4 DEG C, opens magnetic stirrer 2h.
Step 4, takes the municipal sludge that the step 3 of 150ml obtains to be heated to 90 DEG C, opens magnetic stirrer 2h, so It is incubated 5min afterwards at 90 DEG C.
Step 5, reactor is preheating to 230 DEG C；
Step 6, takes the deionized water of 250ml, adds in reactor.
Step 7, is passed through pure oxygen gas 150ml in reactor, reactor is pressurized to 30bar.
Step 8, in the municipal sludge feeding reactor being obtained step 4 as vector gas using purity nitrogen, the response time is 30min.
<Embodiment five>
Step 1, prepares and contains 80% preliminary sludge, the municipal sludge of 20% secondary sludge, carry out anaerobic fermentation pretreatment.
Step 2, pretreated municipal sludge is put into storage 48h at -20 DEG C.
Step 3, the municipal sludge that step 2 is obtained is warming up to 4 DEG C, opens magnetic stirrer 2h.
Step 4, takes the municipal sludge that the step 3 of 150ml obtains to be heated to 90 DEG C, opens magnetic stirrer 2h, so It is incubated 5min afterwards at 90 DEG C.
Step 5, reactor is preheating to 280 DEG C；
Step 6, takes the deionized water of 250ml, adds in reactor.
Step 7, is passed through pure oxygen gas 300ml in reactor, reactor is pressurized to 30bar.
Step 8, in the municipal sludge feeding reactor being obtained step 4 as vector gas using purity nitrogen, the response time is 45min.
<Embodiment six>
Step 1, prepares and contains 100% preliminary sludge, the municipal sludge of 0% secondary sludge, carry out anaerobic fermentation pretreatment.
Step 2, pretreated municipal sludge is put into storage 48h at -20 DEG C.
Step 3, the municipal sludge that step 2 is obtained is warming up to 4 DEG C, opens magnetic stirrer 2h.
Step 4, takes the municipal sludge that the step 3 of 150ml obtains to be heated to 90 DEG C, opens magnetic stirrer 2h, so It is incubated 5min afterwards at 90 DEG C.
Step 5, reactor is preheating to 230 DEG C；
Step 6, takes the deionized water of 250ml, adds in reactor.
Step 7, is passed through pure oxygen gas 225ml in reactor, reactor is pressurized to 30bar.
Step 8, in the municipal sludge feeding reactor being obtained step 4 as vector gas using purity nitrogen, the response time is 90min.
To implementing one to implementing, in six, to be weighed with reacted municipal sludge amount laboratory sample before reaction, obtain anti- Sludge quantity change table before and after answering, as shown in table 1：
Sludge quantity change table before and after table 1. reaction
As shown in table 1, by the disposal methods municipal sludge of the municipal sludge non-catalytic wet oxidation of embodiment, experiment Result shows that sludge quantity substantially reduces, obvious processing effect.
The effect of embodiment and effect
The processing method of the municipal sludge non-catalytic wet oxidation involved by the present embodiment, need not add catalyst, technique stream Journey is simple, process cycle is short, the problems such as can preferably solve the environmental pollution that traditional sludge processing mode is brought, decreases mud Floor space, do not produce secondary pollution, and the present invention also be adapted for industrial application.The present embodiment rationally having in municipal sludge Effect has important practical significance and economic value in processing.
Above-mentioned embodiment is the preferred case of the present invention, is not intended to limit protection scope of the present invention.

Claims (7)

1. a kind of processing method of municipal sludge non-catalytic wet oxidation is it is characterised in that comprise the following steps：
Step one, takes municipal sludge, carries out anaerobic fermentation pretreatment；
Step 2, pretreated described municipal sludge is stored under cryogenic temperature 48h, and described cryogenic temperature is -30～-10 Any one value in DEG C；
Step 3, the described municipal sludge that step 2 is obtained is warming up to assigned temperature, opens magnetic stirrer 2h, described Assigned temperature is any one value in 0～20 DEG C；
Step 4, takes the described municipal sludge that the step 3 of certain volume obtains to be heated to thermostat temperature, opens magnetic stirring apparatuss Stirring 2h, is then incubated 5min under described thermostat temperature, and described thermostat temperature is any one value in 50～90 DEG C；
Step 5, reactor is preheating to preheating temperature, and described preheating temperature is any one value in 200～300 DEG C；
Step 6, takes the deionized water of certain volume, adds in described reactor, the institute that described deionized water and step 4 are taken The volume ratio stating municipal sludge is 5:3；
Step 7, is passed through pure oxygen gas in described reactor, described reactor is pressurized to certain pressure, described certain pressure The volume ratio of the described municipal sludge being taken for value any one in 20～40bar, described pure oxygen gas and step 4 is (1～3)： 1；
Step 8, is sent into the described municipal sludge that step 4 obtains in described reactor as vector gas using purity nitrogen and carries out instead Should, the response time is any one value in 1～90min.
2. municipal sludge non-catalytic wet oxidation according to claim 1 processing method it is characterised in that：
Wherein, cryogenic temperature described in step 2 is -20 DEG C.
3. municipal sludge non-catalytic wet oxidation according to claim 1 processing method it is characterised in that：
Wherein, assigned temperature described in step 3 is 4 DEG C.
4. municipal sludge non-catalytic wet oxidation according to claim 1 processing method it is characterised in that：
Wherein, described thermostat temperature described in step 4 is 90 DEG C.
5. municipal sludge non-catalytic wet oxidation according to claim 1 processing method it is characterised in that：
Wherein, any one value during described preheating temperature described in step 5 is 220～230 DEG C.
6. municipal sludge non-catalytic wet oxidation according to claim 1 processing method it is characterised in that：
Wherein, certain pressure described in step 7 is 30bar.
7. municipal sludge non-catalytic wet oxidation according to claim 1 processing method it is characterised in that：
Wherein, the response time described in step 8 is 60min.
CN201611067940.8A 2016-11-29 2016-11-29 Non-catalytic wet oxidation treatment method of municipal sludge Pending CN106396313A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201611067940.8A CN106396313A (en) 2016-11-29 2016-11-29 Non-catalytic wet oxidation treatment method of municipal sludge

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201611067940.8A CN106396313A (en) 2016-11-29 2016-11-29 Non-catalytic wet oxidation treatment method of municipal sludge

Publications (1)

Publication Number Publication Date
CN106396313A true CN106396313A (en) 2017-02-15

Family

ID=58083451

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201611067940.8A Pending CN106396313A (en) 2016-11-29 2016-11-29 Non-catalytic wet oxidation treatment method of municipal sludge

Country Status (1)

Country Link
CN (1) CN106396313A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103739474A (en) * 2013-11-12 2014-04-23 上海交通大学 Method for preparing acetic acid through hydrothermal oxidation of microalgae by using oxidation state metal compound
CN104379754A (en) * 2012-02-28 2015-02-25 特瑞克斯有限合伙公司 Treatment of biomass

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104379754A (en) * 2012-02-28 2015-02-25 特瑞克斯有限合伙公司 Treatment of biomass
CN103739474A (en) * 2013-11-12 2014-04-23 上海交通大学 Method for preparing acetic acid through hydrothermal oxidation of microalgae by using oxidation state metal compound

Similar Documents

Publication Publication Date Title
CN102992559B (en) Method for comprehensively utilizing anaerobic digestion and carbonization of municipal sludge
Dussadee et al. Potential development of compressed bio-methane gas production from pig farms and elephant grass silage for transportation in Thailand
CN104878046A (en) Aerobiotic and anaerobic coupled two-phase fermentation marsh gas generation process method
CN102731179A (en) Solid anaerobic and aerobic composting system for organic garbage and sludge and treatment method
Kamyab et al. Investigating the efficiency of biogas production using modelling anaerobic digestion of baker's yeast wastewater on two-stage mixed-UASB reactor
CN101250554A (en) Method for improving hydrogen gas yield of kitchen waste anaerobic digestion
CN106966562A (en) A kind of method of the liquid bio-oil of utilization treatment with supercritical fluid municipal sludge production high heating value
Nakashimada et al. Ammonia–methane two-stage anaerobic digestion of dehydrated waste-activated sludge
CN104118955A (en) Method and device for treating high-concentration organic wastewater
Wadchasit et al. Development of a novel reactor for simultaneous production of biogas from oil-palm empty fruit bunches (EFB) and palm oil mill effluents (POME)
Francese et al. Feeding approaches for biogas production from animal wastes and industrial effluents
CN103992015B (en) A kind of technique improving biochemical excess sludge dewatering
Laskri et al. Anaerobic digestion of waste organic matter and biogas production
CN106396313A (en) Non-catalytic wet oxidation treatment method of municipal sludge
CN108358311B (en) Method for enhancing wastewater anaerobic biological phosphorus removal by biochar coupling micro-current
CN114105331B (en) Preparation method and application of calcium peroxide composite sustained release agent
KR101286072B1 (en) Two-phase anaerobic digestion apparatus
CN102643000B (en) Method for improving semi-dry fermentation stability of municipal sludge by adding cassava vinasse
CN101445294B (en) A marsh gas preparation method of landfill leachate resources
CN102775037A (en) Three-step two-stage method for producing marsh gas from municipal sludge by anaerobic fermentation
Erguder et al. Organic acid production from the organic fraction of municipal solid waste and cow manure in leaching bed reactors.
CN106396319A (en) Method for producing acetic acid from municipal sludge through two-step method
CN106277560A (en) The source discharge-reducing method of a kind of high COD leveling precision waste water and system
CN212051027U (en) Resource system for preparing compound fertilizer by using sludge
CN102765697A (en) Hydrogen production method by supercritical water gasification using bloom-forming cyanobacteria as raw material

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20170215