CN107434341A - A kind of method of sludge high efficient resourcing - Google Patents
A kind of method of sludge high efficient resourcing Download PDFInfo
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- CN107434341A CN107434341A CN201710455092.6A CN201710455092A CN107434341A CN 107434341 A CN107434341 A CN 107434341A CN 201710455092 A CN201710455092 A CN 201710455092A CN 107434341 A CN107434341 A CN 107434341A
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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
- C02F11/02—Biological treatment
- C02F11/04—Anaerobic treatment; Production of methane by such processes
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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
- 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
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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
- C02F11/12—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
- C02F11/127—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering by centrifugation
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- 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
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- 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
- Y02W10/40—Valorisation of by-products of wastewater, sewage or sludge processing
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- Hydrology & Water Resources (AREA)
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- Oil, Petroleum & Natural Gas (AREA)
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- Treatment Of Sludge (AREA)
Abstract
The invention belongs to sewage treatment area, specially a kind of method of sludge high efficient resourcing.This method mainly by sludge condensation, pretreatment, separation of solid and liquid, anaerobic digestion and prepare mud adsorbent etc. part form.Operating method is that sludge of sewage treatment plant first is concentrated into suitable concn, then the pretreatment that calcium mixture alkaline agent combines other methods is carried out, separation of solid and liquid is carried out again, and liquid portion carries out anaerobic digestion methane phase, and solid portion prepares sludge organism charcoal by desiccation or pyrolysis.The organic substance in sludge can be discharged using the pretreatment comprising calcium mixture alkali process process, these organic substances may carry out anaerobic digestion methane phase by high efficiency anaerobic reactor.On the one hand big portion's phosphorus in sludge can be stored in sewage sludge solid by calcium mixture alkali, reduce the release of phosphorus in preprocessing process, prepared sludge organism charcoal phosphorus content is higher, on the other hand sludge solid content can be activated and is modified, and the sludge organism charcoal of preparation has good characterization of adsorption.
Description
Technical field：
It is more particularly to a kind of strong with reference to other processing methods by mixing alkaline agent the invention belongs to technical field of sewage
Change the method for sludge of sewage treatment plant recycling.
Background technology：
Sludge is the accessory substance of biological wastewater treatment process, contains substantial amounts of organic waste in sludge, without processing meeting
Cause serious environmental problem.With the quickening of Chinese Urbanization and process of industrialization, the treating capacity of municipal sewage is also with big
Width increase, the thing followed is that caused sludge also rolls up in sewage disposal process.The whole year city of China in 2015 according to statistics
Town sludge of sewage treatment plant yield (in terms of moisture content 80%) is still being continuously increased up to 33,590,000 tons, it is contemplated that dirty to the year two thousand twenty
Mud yield will break through 60,000,000 tons.Traditional " the light mud of heavy water " idea inhibits input and the development of Treatment of Sludge, causes in face
Target to Treatment of Sludge requirement " recycling, minimizing, stabilisation and innoxious " and when requiring, at present China's Treatment of Sludge
Scarce capacity, means fall behind.Because Treatment of Sludge cost is higher, the 30%~60% of sewage treatment plant's gross investment can be accounted for, dirt
The processing disposal of mud turns into the major issue that sewage treatment plant faces.It is a kind of organic waste meanwhile recycling is enriched in sludge
Gurry, in face of the present situation of current shortage of resources, recycling sludge is the first choice of specific resistance to filtration.At present, recycling sludge
Method have land use, energy recovery (such as anaerobic fermentation hydrogen manufacturing, methane phase and electricity production), as alternative fuel source, as building
Build material (such as cement, brick), using emerging technology from sludge Resource recovery (such as gasification, cracking liquefaction) and as sorbing material
(such as charcoal, haydite).Wherein, anaerobic digestion methane phase is to apply more recycling sludge method at present.In addition, mesh
Preceding most of recycling sludge all only with a kind of method, lacks the coupling of two or more method of resource.
Because sludge forms in complicated and sludge most of organic matter all in microbial cell.The unique texture of sludge
It has impact on the efficiency of recycling sludge.Therefore, recycling sludge efficiency is usually improved using pretreatment, for example, pretreatment is strong
Change anaerobic sludge digestion, sludge pretreatment releasing organics do denitrifying internal carbon source etc..During sludge pretreatment, one
Divide organic matter never solvent can be converted into solubilised state, so that the solid content of sludge is reduced.However, most of pretreatment at present is only
The solid content of sludge can be made to reduce 10-50%, a large amount of solid contents are still suffered from sludge.And the presence of solid content can influence sludge money
The selection of source method.For example, due to the presence of solid content, anaerobic sludge digestion is generally all sent out using simple full-mixing type anaerobic
Fermentation tank, and be difficult to use second generation high efficiency anaerobic reactor (such as upflow sludge bed reactor, internal-circulation type anaerobic reactor).
On the other hand, in the preparation process of mud adsorbent, alkaline hydrated oxide (such as potassium hydroxide, hydroxide can usually be used
Sodium, calcium hydroxide) sludge is activated, be modified, improve the absorption property of mud adsorbent.The method of the process containing alkali process
(such as alkali process, hot alkali treatment, alkali-supersound process, alkali-homogenization, alkali-microwave etc.) is a kind of important sludge pretreatment
Method.In such method, conventional alkali is sodium hydroxide, potassium hydroxide, calcium hydroxide etc., wherein the above two pretreatment effect
Fruit is apparently higher than the latter.However, calcium ion can be by compressing sludge colloid electric double layer, bridge formation etc. between negatively charged flco
Mode improves the dewatering of sludge, therefore is advantageous to the separation of solid and liquid of sludge.Meanwhile calcium ion can be with sludge pretreatment mistake
The phosphorus reaction discharged in journey, so as to which this part phosphorus is fixed in sewage sludge solid, reduce the release of phosphorus in preprocessing process.Cause
This, if reinforcement sludge anaerobism will be pre-processed, alkaline hydrated oxide improves the characterization of adsorption of mud adsorbent and calcium ion improves
The solid-liquid separation effect of sludge combines with solid phosphorus effect, then can improve recycling sludge efficiency.But this is had no at present
The research of aspect.
The content of the invention：
Insufficient in order to overcome existing for the method for traditional sludge recycling, the invention provides a kind of technique is simple, operation
With the easy sludge high efficient resourcing method low with operating cost of control, by the way that sludge is suitably pre-processed, Ran Houjin
Row separation of solid and liquid, liquid portion carry out anaerobic digestion, and solid part as high concentrated organic wastewater using high efficiency anaerobic reactor
Divide and mud adsorbent is prepared by direct desiccation or high temperature pyrolysis, so as to improve recycling sludge efficiency.
The technical solution adopted for the present invention to solve the technical problems is：
The sludge of sewage treatment plant after concentration is pre-processed using mixing alkaline agent with reference to other methods first, release is dirty
Organic matter in mud, separation of solid and liquid is then carried out again, liquid portion carries out high efficiency anaerobic reactor and carries out anaerobic digestion methane phase, Gu
The direct desiccation of body portion is prepared into mud adsorbent, or high temperature pyrolysis is prepared into sludge organism charcoal.Comprise the following steps that：
(1) sludge condensation is handled, and sludge concentration is adjusted into 15~100g/L；
The method of the concentration is gravity concentration, centrifugal concentrating or filtering and concentrating；
Preferably, sludge concentration is 20~60g/L after concentration；
(2) sludge after concentration is pre-processed using mixing alkaline agent, the caustic dosage in preprocessing process passes through pH value control
System, pH value range 10.0-13.0；
The mixing alkaline agent is the mixture of sodium hydroxide and calcium hydroxide, and the mass ratio that both mix is 1-10:1；
The pretreatment time is 5min-24h；
Preferably, the mass ratio of sodium hydroxide and calcium hydroxide is 2-3：1；
Preferably, the pH value range is 11.5-12.0；
Preferably, other processing methods are combined while mixing alkaline agent pretreatment, at heat treatment, microwave treatment, ultrasound
Reason, mechanical treatment etc.；
(3) separation of solid and liquid is carried out to pretreated sludge；
The separation of solid and liquid can use and be centrifuged at a high speed or be separated by filtration；
(4) separation of solid and liquid obtains liquid portion and carries out anaerobic digestion methane phase using high efficiency anaerobic reactor；
Preferably, the high efficiency anaerobic reactor is upflow anaerobic sludge blanket reactor, expanded granular sludge bed reaction
Device, internal-circulation type anaerobic reactor or anaerobic membrane bioreactor；
(5) solid portion that separation of solid and liquid obtains, mud adsorbent is prepared into by direct desiccation, or prepared by high temperature pyrolysis
Into sludge organism charcoal；
The directly desiccation temperature is 60-105 DEG C；
Preferably, the temperature of the directly desiccation is 85-105 DEG C；
The temperature of the high temperature pyrolysis is 500-700 DEG C, and pyrolysis time is 40-120 minutes；
Preferably, the temperature of the high temperature pyrolysis is 550-650 DEG C, and pyrolysis time is 60-80 minutes；
Mud adsorbent or the sludge organism charcoal can be used for heavy metal, dyestuff, phosphorus, ammonia or waste gas or natural pond in absorption effluent
Hydrogen sulfide, ammonia in gas etc.；
The sludge organism charcoal can also be directly used as soil conditioner.
Beneficial effect：
1st, the present invention is concentrated using sodium hydroxide, the mixing alkaline agent of calcium hydroxide of proper ratio with reference to other methods
The pretreatment of sludge, OH-Sludge is subjected to lysis, release mud organic substance；The calcium ion of addition can be by compressing sludge glue
Body electric double layer, the mode such as bridge formation improves the dewatering of pretreating sludge between negatively charged flco, improves sludge solid-liquid point
From efficiency；Simultaneously calcium ion can with the phosphorus reaction that is discharged during sludge pretreatment, so as to which this part phosphorus is fixed on into sludge
In solid, the release of phosphorus in preprocessing process is reduced, so as to improve the follow-up phosphorus content for preparing charcoal；
2nd, by separation of solid and liquid, sewage sludge solid part is without anaerobic digestion, so as to release solid concentration height to anaerobism
The requirement of reactor selection, and sludge supernatant contains large amount of organic after pretreatment, anaerobic digestion methane phase efficiency can be big
It is big to improve；
3rd, solid portion can be prepared into sludge organism charcoal, for heavy metal in Adsorption sewage, dyestuff, phosphorus, ammonia or
Hydrogen sulfide, ammonia in waste gas or biogas etc., due to the effect of calcium mixture alkali process, the suction of gained mud adsorbent or charcoal
Attached efficiency is improved significantly, compared to not being the raw sewage that pre-processes, Cu2+Adsorbance improve 20-45%, P adsorbance carries
High 25-60%, Pb2+Adsorbance improve 25-35%, and compared to only with NaOH carry out alkali process sludge, Cu2+Absorption
Amount improves 10-25%, and P adsorbance improves 15-30%, Pb2+Adsorbance improve 10-15%.
4th, solid sludges part can be used for soil conditioner, because phosphorus is largely retained in solids in sludge,
Prepared charcoal contains higher nutrients.
5th, present invention process is simple, operate and control is easy, and operating cost is low, can significantly improve the recycling effect of sludge
Rate.
Embodiment：
Embodiment 1, a kind of method of sludge high efficient resourcing
The excess sludge of sewage treatment plant will be derived from, by gravity concentration, sludge concentration be adjusted to 20g/L, uses quality
Than for 3：1 NaOH and Ca (OH)2It is 12 to mix alkaline agent conditioning of mud pH value, is handled 24 hours, sludge exists after then handling
10min is centrifuged under 6000r/min and carries out separation of solid and liquid.Liquid portion carries out anaerobism by upflow anaerobic sludge blanket reactor and disappeared
Change methane phase, hydraulic detention time is 8-12 days, compared to traditional sludge anaerobic digestor (its hydraulic detention time is based on 20 days)
Shorten 40-60%, compared to the sludge not pre-processed, the gas production of anaerobic digestion improves 53-65%.Solid portion is in 105
Dried 6 hours at DEG C, after the ground crushing (2mm) of drying sludge, for Adsorption of Cu2+, compared to not pretreated raw sewage system
Standby obtained sample, Cu2+Adsorbance improve 20-30%；And adjust what pH value was prepared again to 12 compared to only with NaOH
Sample, Cu2+Adsorbance improve 15-25%.
A kind of method of sludge high efficient resourcing of embodiment 2
The excess sludge centrifugal concentrating of sewage treatment plant will be derived from, sludge concentration is adjusted to 40g/L, be 2 with mass ratio：
1 NaOH and Ca (OH)2It is 11.5 to mix alkaline agent conditioning of mud pH value, then handle 60 minutes at 175 DEG C, then will dirt after processing
Mud centrifuges 10min under 6000r/min and carries out separation of solid and liquid.Liquid portion carries out anaerobism by internal-circulation type anaerobic reactor and disappeared
Change methane phase, hydraulic detention time is 5-10 days, compared to traditional sludge anaerobic digestor (its hydraulic detention time is based on 20 days)
Shorten 50-75%, compared to untreated sludge, the gas production of anaerobic digestion improves 60-70%.Solid portion is in 600 DEG C of logical nitrogen
It was pyrolyzed for 1 small time under environment, after the sample for being pyrolyzed to obtain grinds (2mm), for adsorbing the red X-GRL of dye cations, phase
The sample being prepared than raw sewage, the adsorbance of Cationic Red X-GRL improve 30-60%.
A kind of method of sludge high efficient resourcing of embodiment 3
The excess sludge centrifugal concentrating of sewage treatment plant will be derived from, sludge concentration is adjusted to 30g/L, be 2 with mass ratio：
1 NaOH and Ca (OH)2It is 11.5 to mix alkaline agent conditioning of mud pH value, then mechanical treatment 60 minutes, then will sludge after processing
10min is centrifuged under 6000r/min and carries out separation of solid and liquid.Liquid portion carries out anaerobic digestion production by anaerobic membrane bioreactor
Methane, hydraulic detention time are 10 days, are shortened compared to traditional sludge anaerobic digestor (its hydraulic detention time is based on 20 days)
50%, compared to the conventional anaerobic digestion of untreated sludge, the gas production of anaerobic digestion improves 80%.Solid portion is logical in 650 DEG C
Be pyrolyzed for 1 small time under nitrogen environment, after the sample for being pyrolyzed to obtain grinds (2mm), for the phosphorus in absorption effluent, compared to by
The sample that raw sewage is prepared, the adsorbance of phosphorus improve 60%, and pre- to 11.5, machinery compared to pH value is adjusted only with NaOH
The sample being prepared again is handled, the adsorbance of phosphorus improves 30%, and the phosphorus content of gained sample also improves 60%.
Embodiment 4, a kind of method of sludge high efficient resourcing
The excess sludge of sewage treatment plant will be derived from, by gravity concentration, sludge concentration be adjusted to 60g/L, uses quality
Than for 10：1 NaOH and Ca (OH)2It is 10,1000W microwave treatment 5min to mix alkaline agent conditioning of mud pH value, then will processing
Sludge centrifuges 10min under 6000r/min and carries out separation of solid and liquid afterwards.Liquid portion is carried out by CGSB
Anaerobic digestion methane phase, hydraulic detention time are 8-10 days, and compared to traditional sludge anaerobic digestor, (its hydraulic detention time presses 20
Its meter) shorten 50-60%, sludge is managed compared to original place, the gas production of anaerobic digestion improves 30-40%.Solid portion is 6 at 85 DEG C
Small time drying, after drying the ground crushing (2mm) of sludge, for adsorbing Pb2+, the sample that is prepared compared to untreated sludge
Product, Pb2+Adsorbance improve 25-35%.And compared to only with NaOH regulation pH value to 10, same microwave treatment is prepared again
Sample, Pb2+Adsorbance improve 10-13%.
The sample being prepared compared to original place reason sludge, the adsorbance of phosphorus improves 25-40%, and compares and adjusted only with NaOH
Save pH value and improve 15-20%, the phosphorus content of gained sample to 10 samples that same microwave treatment is prepared again, the adsorbance of phosphorus
Also 40-60% is improved.
Embodiment 5, a kind of method of sludge high efficient resourcing
The excess sludge of sewage treatment plant will be derived from, by gravity concentration, sludge concentration be adjusted to 100g/L, uses quality
Than for 8：1 NaOH and Ca (OH)2It is 13 to mix alkaline agent conditioning of mud pH value, is ultrasonically treated (225kJ/kgTS) 30 minutes, so
Sludge centrifuges 10min under 6000r/min and carries out separation of solid and liquid after handling afterwards.Liquid portion passes through internal-circulation type anaerobic reaction
Device carries out anaerobic digestion methane phase, and hydraulic detention time is 6-10 days, compared to traditional sludge anaerobic digestor (during its hydraulic retention
Between based on 20 days) shorten 50-70%, manage sludge compared to original place, the gas production of anaerobic digestion improves 50-75%.Solid portion in
High temperature pyrolysis 80min at 550 DEG C, after being pyrolyzed the ground crushing (2mm) of sludge, for Adsorption of Cu2+, compared to not pretreated original
The sample that sludge is prepared, Cu2+Adsorbance improve 30-45%.And compare only with NaOH regulation pH value to 13, equally surpass
The sample that sonication is prepared again, Cu2+Adsorbance improve 10-15%.
The sample being prepared compared to raw sewage, the adsorbance of phosphorus improves 40-50%, and adjusts pH compared to only with NaOH
It is worth 13, is equally ultrasonically treated the sample being prepared again, the adsorbance of phosphorus improves 15-25%, the phosphorus content of gained sample
Improve 30-45%.
The specific embodiment of the present invention is described in detail above, but content is only presently preferred embodiments of the present invention,
It is not to be regarded as the practical range for limiting the present invention.Any changes and modifications in accordance with the scope of the present application,
All should still it belong within the patent covering scope of the present invention.
Claims (10)
- A kind of 1. sludge high efficient resourcing method, it is characterised in that pre-processed after sludge condensation using mixing alkaline agent, it is described The mixture that alkaline agent is sodium hydroxide and calcium hydroxide is mixed, the mass ratio that both mix is 1-10:1；Carried out again after pretreatment Separation of solid and liquid, liquid portion carry out anaerobic digestion methane phase, and the direct desiccation of solid portion is prepared into mud adsorbent, or high warm Solution is prepared into sludge organism charcoal.
- 2. a kind of sludge high efficient resourcing method as claimed in claim 1, it is characterised in that comprise the following steps that：(1) sludge condensation is handled, and sludge concentration is adjusted into 15~100g/L；(2) sludge after concentration is pre-processed using mixing alkaline agent, the caustic dosage in preprocessing process is controlled by pH value, pH Value scope is 10.0-13.0；(3) separation of solid and liquid is carried out to pretreated sludge；(4) separation of solid and liquid obtains liquid portion and carries out anaerobic digestion methane phase using high efficiency anaerobic reactor；(5) solid portion that separation of solid and liquid obtains, mud adsorbent is prepared into by direct desiccation, or high temperature pyrolysis is prepared into dirt Mud charcoal.
- 3. a kind of sludge high efficient resourcing method as claimed in claim 2, it is characterised in that while mixing alkaline agent pretreatment With reference to following processing method：Heat treatment, microwave treatment, supersound process or mechanical treatment.
- 4. a kind of sludge high efficient resourcing method as claimed in claim 2, it is characterised in that sodium hydroxide and calcium hydroxide Mass ratio is 2-3：1.
- 5. a kind of sludge high efficient resourcing method as claimed in claim 2, it is characterised in that the temperature of the directly desiccation is 60-105℃。
- 6. a kind of sludge high efficient resourcing method as claimed in claim 2, it is characterised in that the temperature of the high temperature pyrolysis is 500-700 DEG C, pyrolysis time is 40-120 minutes.
- 7. a kind of sludge high efficient resourcing method as claimed in claim 2, it is characterised in that specifically step by step rapid as follows：(1) sludge condensation is handled, and sludge concentration is adjusted into 20~60g/L；(2) sludge after concentration is pre-processed using mixing alkaline agent, the caustic dosage in preprocessing process is controlled by pH value, pH Value scope is 11.5-12.0, pretreatment time 5min-24h, and mixing alkaline agent combines following processing method while pretreatment： Heat treatment, microwave treatment, supersound process or mechanical treatment；(3) separation of solid and liquid is carried out to pretreated sludge；(4) separation of solid and liquid obtains liquid portion and carries out anaerobic digestion methane phase using high efficiency anaerobic reactor；(5) solid portion that separation of solid and liquid obtains, mud adsorbent is prepared into by direct desiccation, or high temperature pyrolysis is prepared into dirt Mud charcoal；The temperature of the directly desiccation is 85-105 DEG C；The temperature of the high temperature pyrolysis is 550-650 DEG C, and pyrolysis time is 60-80 minutes；
- 8. mud adsorbent or sludge organism prepared by the sludge high efficient resourcing method as described in claim 1-7 any one Charcoal.
- 9. the application of mud adsorbent described in claim 8 or sludge organism charcoal.
- 10. the application of mud adsorbent as claimed in claim 9 or sludge organism charcoal, it is characterised in that the sludge absorption Agent or sludge organism charcoal can be used for heavy metal, dyestuff, phosphorus, ammonia or waste gas or hydrogen sulfide, ammonia in biogas in absorption effluent；The sludge organism charcoal can also be directly used as soil conditioner.
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Cited By (9)
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| CN108557997A (en) * | 2018-04-04 | 2018-09-21 | 大连理工大学 | A kind of preparation of sludge lysate and its application in high-salt wastewater Anaerobic Treatment |
| CN109437508A (en) * | 2018-12-17 | 2019-03-08 | 苏州比雷艾斯电子科技有限公司 | A kind of printing and dyeing sludge processing system removing heavy metal and water removal |
| CN110104821A (en) * | 2019-04-15 | 2019-08-09 | 杭州师范大学 | A kind of municipal sewage phosphorus ligands and recovery method |
| CN110342780A (en) * | 2019-08-07 | 2019-10-18 | 上海大学 | A kind of resource utilization method of sludge biogas residue |
| CN110499339A (en) * | 2019-08-19 | 2019-11-26 | 内蒙古科技大学 | The method for promoting anaerobic digestion methane phase efficiency |
| CN111363764A (en) * | 2020-04-28 | 2020-07-03 | 黑龙江岑文水稻专业合作社联社 | Preparation method of biogas in alpine region |
| CN112306029A (en) * | 2020-11-11 | 2021-02-02 | 河南中中中环保设备有限公司 | Software platform of whole-process control system based on high-pressure thermal cracking process |
| CN112679061A (en) * | 2019-10-17 | 2021-04-20 | 天津大学 | Method for preparing biogas by anaerobic digestion of sludge and biogas obtained by method |
| CN115583774A (en) * | 2022-08-30 | 2023-01-10 | 湖南平安环保股份有限公司 | Regulation and control method for preparing carbon by sludge pyrolysis |
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