CN112811764A - High-temperature high-pressure cracking treatment process based on sludge organic matter - Google Patents
High-temperature high-pressure cracking treatment process based on sludge organic matter Download PDFInfo
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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
- C02F11/02—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
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
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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
- C02F11/14—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents
- C02F11/143—Treatment of sludge; Devices therefor by de-watering, drying or thickening with addition of chemical agents using inorganic substances
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
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Abstract
The invention relates to the technical field of sludge treatment, in particular to a high-temperature high-pressure cracking treatment process based on sludge organic matters. The method comprises the steps of sludge pretreatment, sludge uniform mixing and preheating, high-temperature high-pressure hot steam reaction, instant pressure relief, high-temperature high-pressure liquid gasification, sludge anaerobic digestion, sludge low-temperature pyrohydrolysis, sludge brick making and the like. The design of the invention can improve the dehydration performance, improve the hydrolysis and wall breaking effects on colloidal substances and microbial cells, improve the decomposition efficiency of organic matters, accelerate the degradation speed, effectively recycle energy, reduce energy consumption, improve the energy efficiency ratio, simplify the process flow, improve the biochemical degree of sludge and the recovery utilization rate of sludge, reduce the heat loss in the outward transportation process of sludge and further improve the energy efficiency ratio of the whole treatment process.
Description
Technical Field
The invention relates to the technical field of sludge treatment, in particular to a high-temperature high-pressure cracking treatment process based on sludge organic matters.
Background
At present, common municipal sludge has high water content, is rich in a large amount of heavy metals and contains a large amount of organic matters which are difficult to biodegrade, so that the sludge treatment difficulty is high; before the sludge is subjected to harmless treatment, the sludge needs to be subjected to dehydration treatment, a large number of zoogloea particles contained in the sludge adsorb a large number of microorganisms and metabolites on the surfaces of the zoogloea particles, the removal difficulty is high, and the substances are not removed, so that the soil and underground water are easily subjected to secondary pollution. The high-pressure thermal cracking is a sludge treatment process for instantly relieving pressure after heating and pressurizing sludge through high-temperature high-pressure steam, and a high-pressure thermal cracking system is used for dissolving colloidal substances, broken cell substances and hydrolytic macromolecular substances in the sludge, so that granular sludge in the sludge is dissolved, the fluidity and biochemical degree of the sludge are improved, and municipal sludge, organic industrial sludge and organic domestic garbage can be converted into biomass energy. However, the existing commonly used sludge treatment process still has defects, which results in higher energy consumption in the process flow and lower sludge treatment efficiency.
Disclosure of Invention
The invention aims to provide a high-temperature high-pressure cracking treatment process based on sludge organic matters, so as to solve the problems in the background technology.
In order to solve the technical problems, the invention provides a high-temperature high-pressure cracking treatment process based on sludge organic matters, which comprises the following steps:
s1, carrying out pretreatment such as concentration and dehydration on the water-containing sludge to reduce the solid content of the sludge to about 15%;
s2, conveying the sludge into a pretreatment tank, introducing steam to preheat the sludge, and stirring and uniformly mixing the sludge through a circulating pump;
s3, conveying the sludge into a high-pressure thermal reaction tank, introducing high-temperature high-pressure saturated steam to heat and pressurize the sludge, controlling the pressure between 1.1Mpa and 1.2Mpa, and keeping the temperature of the sludge at about 188 ℃ to keep the water in a liquid state;
s4, allowing the sludge to stay in the high-pressure thermal reaction tank for a period of time, spraying the sludge into the pressure relief tank through the pressure difference of nearly 1Mpa, and simultaneously refluxing the generated steam into the pretreatment tank;
s5, conveying the high-pressure thermal cracking sludge into an anaerobic reactor, carrying out anaerobic digestion operation with high solid content on the sludge under the anaerobic condition, and conveying the biogas generated in the process to a boiler for providing high-pressure steam;
s6, conveying the sludge into a thermal hydrolysis reactor, and performing low-temperature thermal hydrolysis treatment on the sludge;
and S7, carrying out secondary harmless treatment on the sludge, conveying the sludge to a brick making workshop through a sludge outward transport vehicle, and firing the sludge into the environment-friendly brick.
As a further improvement of the technical solution, in S1, the flow of pretreating the water-containing sludge includes the following steps:
s1.1, filtering sludge, and screening out large granular impurities with the size larger than 3cm in the sludge;
s1.2, concentrating the sludge, reducing the water content of the sludge to about 95%, and simultaneously mixing the discharged sewage into the original sewage for treatment;
s1.3, adding a dehydrating agent into the sludge, dehydrating the sludge, and reducing the solid content of the sludge to about 15%;
s1.4, conveying the sludge to a sludge tank for sludge storage for subsequent operation and use.
As a further improvement of the technical scheme, in the S1.3, the dehydrating agent comprises the following raw materials in parts by weight: NaHCO 2350-60 parts of FeCl310-15 parts of hydrogen peroxide with the mass concentration of 85%.
As a further improvement of the technical solution, in S2, the preheating temperature of the sludge is 95 to 105 ℃.
As a further improvement of the technical scheme, in the step S4, the staying time of the sludge in the high-pressure thermal reaction tank is 15-60 min.
As a further improvement of the technical solution, in S5, the reaction process of anaerobic digestion of sludge includes the following steps:
s5.1, conveying the sludge into an anaerobic reactor, and pumping away oxygen to perform an extracellular enzymatic reaction process on the sludge;
s5.2, conveying the sludge into an acid fermentation reactor to degrade soluble matrixes in the sludge;
s5.3, conveying the sludge into an alkaline fermentation reactor, so that acidification products in the sludge are converted into acetic acid, and low hydrogen and formic acid concentrations are maintained in the process;
s5.4, the acetic acid is decomposed into methane and carbon dioxide under the action of acetic acid nutritional methanogens.
As a further improvement of the technical solution, in S6, the conditions in the low-temperature pyrohydrolysis reaction process are: setting the temperature T at 65-75 ℃, setting the hydrolysis time HRT at 1-1.5 d, and adding NaOH to adjust the ph to 9.5-10.5.
As a further improvement of the technical scheme, the sludge transport vehicle in step S7 includes a sludge vehicle body, a main compartment is hinged to the rear end of the sludge vehicle body, the main compartment includes an outer hopper, the top end of the outer hopper is hinged to an outer top cover through a hinge, the rear end of the outer hopper is hinged to a rear outer cover plate through two sets of crank connecting rods, an air cylinder is arranged at the front end of each crank connecting rod, a heat preservation compartment is fixed in the main compartment in a clamped manner, the heat preservation compartment includes an inner hopper, both sides of the top end of the inner hopper are hinged to inner top covers through hinges, and the rear end of the inner hopper is hinged to a rear inner baffle through hinges.
Compared with the prior art, the invention has the beneficial effects that: in the sludge organic matter high-temperature high-pressure cracking treatment process, dehydrating operation is carried out by adding the dehydrating agent, zoogloea particles can be damaged, the dehydration performance is improved, the hydrolysis and wall breaking effects on colloidal substances and microbial cells are improved, the organic matter decomposition efficiency is improved, the degradation speed is accelerated, energy is effectively recycled, the energy consumption is reduced, the energy efficiency ratio is improved, the process flow is simplified, the biochemical degree of sludge and the recovery utilization rate of sludge are improved, in addition, by arranging the sludge outward transport vehicle with the heat preservation effect, the heat loss in the sludge outward transport process can be reduced, the energy consumption of a brick making workshop is further saved, and the energy efficiency ratio of the whole treatment process is improved.
Drawings
FIG. 1 is an overall process flow diagram of example 1;
FIG. 2 is a process flow diagram of S1 in example 1;
FIG. 3 is a process flow diagram of S5 in example 1;
FIG. 4 is a schematic view showing the overall structure of the sludge carrying vehicle in example 3;
FIG. 5 is a schematic view showing the overall structure of the sludge carrying vehicle in example 3;
FIG. 6 is a partial structural view of the sludge carrying-out vehicle in example 3;
FIG. 7 is a partial structural view of the sludge carrying-out vehicle in example 3;
FIG. 8 is a partial structural view of the sludge carrying-out vehicle in example 3.
Wherein:
1. a sludge vehicle body;
2. a main compartment; 21. an outer hopper; 22. an outer top cover; 23. a rear outer cover plate; 24. a crank connecting rod; 25. a cylinder;
3. a heat preservation compartment; 31. an inner car hopper; 32. an inner top cover; 33. a rear inner baffle.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
As shown in fig. 1 to 3, the present embodiment aims to provide a sludge organic matter-based pyrolysis treatment process, which includes the following steps:
s1, carrying out pretreatment such as concentration and dehydration on the water-containing sludge to reduce the solid content of the sludge to about 15%;
s2, conveying the sludge into a pretreatment tank, introducing steam to preheat the sludge, and stirring and uniformly mixing the sludge through a circulating pump;
s3, conveying the sludge into a high-pressure thermal reaction tank, introducing high-temperature high-pressure saturated steam to heat and pressurize the sludge, controlling the pressure between 1.1Mpa and 1.2Mpa, and keeping the temperature of the sludge at about 188 ℃ to keep the water in a liquid state;
s4, allowing the sludge to stay in the high-pressure thermal reaction tank for a period of time, spraying the sludge into the pressure relief tank through the pressure difference of nearly 1Mpa, and simultaneously refluxing the generated steam into the pretreatment tank;
s5, conveying the high-pressure thermal cracking sludge into an anaerobic reactor, carrying out anaerobic digestion operation with high solid content on the sludge under the anaerobic condition, and conveying the biogas generated in the process to a boiler for providing high-pressure steam;
s6, conveying the sludge into a thermal hydrolysis reactor, and performing low-temperature thermal hydrolysis treatment on the sludge;
and S7, carrying out secondary harmless treatment on the sludge, conveying the sludge to a brick making workshop through a sludge outward transport vehicle, and firing the sludge into the environment-friendly brick.
In this embodiment, in S1, the flow of pretreating the water-containing sludge includes the following steps:
s1.1, filtering sludge, and screening out large granular impurities with the size larger than 3cm in the sludge;
s1.2, concentrating the sludge, reducing the water content of the sludge to about 95%, and simultaneously mixing the discharged sewage into the original sewage for treatment;
s1.3, adding a dehydrating agent into the sludge, dehydrating the sludge, and reducing the solid content of the sludge to about 15%;
s1.4, conveying the sludge to a sludge tank for sludge storage for subsequent operation and use.
Specifically, in S1.3, the dehydrating agent comprises the following raw materials in parts by weight: NaHCO 2350-60 parts of FeCl310-15 parts of hydrogen peroxide with the mass concentration of 85%.
Wherein, NaHCO3Will be divided after being heatedDecomposed into CO2And Na2CO3，CO2The generation of the sodium ion can lead the sludge to generate a large amount of cavitation bubbles which can destroy hydrophobic membranes of zoogloea in the sludge when being destroyed, improve the dehydration performance of the sludge, and simultaneously Na2CO3Can be used as a pyrolysis catalyst; FeCl3The flocculation function can be realized, the sludge solid particles are promoted to be condensed into particle flocs, and the moisture is separated; the hydrogen peroxide has strong oxidation effect, and can oxidize and destroy organic substances on the outer layer of the zoogloea.
In this embodiment, in S2, the preheating temperature of the sludge is 95 to 105 ℃, which can accelerate the heating speed of the subsequent high-pressure thermal cracking reaction and improve the reaction efficiency.
Wherein, the steam that preheats mud is given first place to the reflux steam, can reduce the energy consumption, improves the energy efficiency ratio.
In this embodiment, in S4, the time that mud stayed in the high-pressure thermal reaction jar is 15min ~ 60min, the time quantum that mud stayed in the high-pressure thermal reaction jar, colloidal substance in the mud is dissolved through the reaction, the broken wall of microbial cell, the macromolecular substance of hydrolysising, reduce viscosity, and with the little molecular organic compound of complicated organic matter schizolysis for easily biodegradable, simultaneously, mud after the high-pressure thermal cracking is when spraying, moisture gasification into vapor entanglement broken wall effect after the pressure release in the twining, make the physical property of mud change, be convenient for carry out subsequent innoxious sludge treatment means, and improve the treatment effeciency.
In this embodiment, in S5, the reaction process of anaerobic digestion of sludge includes the following steps:
s5.1, conveying the sludge into an anaerobic reactor, and pumping away oxygen to perform an extracellular enzymatic reaction process on the sludge;
s5.2, conveying the sludge into an acid fermentation reactor to degrade soluble matrixes in the sludge;
s5.3, conveying the sludge into an alkaline fermentation reactor, so that acidification products in the sludge are converted into acetic acid, and low hydrogen and formic acid concentrations are maintained in the process;
s5.4, the acetic acid is decomposed into methane and carbon dioxide under the action of acetic acid nutritional methanogens.
Specifically, the anaerobic digestion mode of the sludge can adopt two-phase anaerobic digestion or the anaerobic digestion of the sludge and other organic matters, so that the anaerobic digestion efficiency can be improved, and the yield of the methane can be improved.
In this example, in S6, the conditions during the low-temperature pyrohydrolysis reaction are: setting the temperature T at 65-75 ℃, setting the hydrolysis time HRT at 1-1.5 d, and adding NaOH to adjust the ph to 9.5-10.5.
In particular, the low-temperature pyrohydrolysis process is simple and has low energy consumption.
The following three sets of experiments were performed with the dehydrating agent in this example:
experiment 1
The dehydrating agent comprises the following raw materials in parts by weight: NaHCO 2360 parts of FeCl310 parts of hydrogen peroxide with the mass concentration of 85 percent, and 30 parts of hydrogen peroxide.
The dehydrating agent comprises the following raw materials in parts by weight: NaHCO 2355 parts of FeCl312 parts of hydrogen peroxide with the mass concentration of 85 percent, and 33 parts of hydrogen peroxide.
Experiment 3
The dehydrating agent comprises the following raw materials in parts by weight: NaHCO 2350 parts of FeCl315 parts of hydrogen peroxide with the mass concentration of 85 percent.
The three experiments were compared with the experiments without the use of a dehydrating agent in terms of appearance, storage life, sludge viscosity and sludge moisture content after use, as shown in the following table:
it can be seen from the above table that this embodiment is based on mud organic matter high temperature high pressure pyrolysis treatment process for zoogloea granule in the aquatic that mud contains is destroyed through the composition and the ratio that change the dehydrating agent, releases zoogloea and contains water, destroys the zoogloea structure, promotes the mud granule to condense into the floc, and then improves the dewatering performance of mud, improves the efficiency that the organic matter decomposes, promotes mud high pressure thermal cracking effect, improves the biochemical degree of mud and the recycle ratio of mud.
As shown in figures 4-8, the invention also provides a sludge transport vehicle comprising a high-temperature high-pressure cracking treatment process for treating sludge organic matters, which comprises a sludge vehicle body 1, wherein the rear end of the sludge vehicle body 1 is hinged with a main carriage 2, and a heat preservation carriage 3 is fixedly clamped in the main carriage 2.
In this embodiment, the main compartment 2 includes an outer bucket 21, and an outer roof 22 is hinged to a top end of the outer bucket 21 by a hinge, so that the outer roof 22 is easy to open and close.
Further, the rear end of the outer car hopper 21 is hinged with a rear outer cover plate 23 through two groups of crank connecting rods 24, the front end of each crank connecting rod 24 is provided with a cylinder 25, the crank connecting rods 24 can be driven through the cylinders 25 to drive the rear outer cover plate 23 to rotate, and the rear end of the main car body 2 can be conveniently opened to discharge materials.
In this embodiment, the heat-insulating compartment 3 includes an inner hopper 31, both sides of the top end of the inner hopper 31 are hinged with an inner top cover 32 through hinges, and after the outer top cover 22 is opened, the inner top cover 32 can be opened so as to clean the inside of the heat-insulating compartment 3.
Furthermore, the two inner top covers 32 are mutually clamped and matched, so that the heat preservation compartment 3 is convenient to close, the contact between sludge and the outer top cover 22 is separated, and the abrasion of the sludge to the outer top cover 22 is reduced.
Further, the rear end of the inner car hopper 31 is hinged with a rear inner baffle 33 through a hinge, and after the rear outer cover plate 23 is opened, the rear inner baffle 33 can be opened to discharge materials.
Specifically, the heat preservation box 3 is convenient to mount and dismount, the double-layer structure can preserve heat of sludge after thermal hydrolysis to a certain extent, heat loss is reduced, heat energy consumed for preheating sludge in a brick making workshop is reduced, and energy is saved; meanwhile, the heat preservation compartment 3 isolates the sludge from the main compartment 2, and the service life of the sludge vehicle body 1 is prolonged.
Furthermore, heat insulation cotton can be filled between the inner car hopper 31 and the outer car hopper 21, and the heat insulation effect of the heat insulation compartment 3 is further improved.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and the preferred embodiments of the present invention are described in the above embodiments and the description, and are not intended to limit the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (8)
1. Based on the high-temperature high-pressure cracking treatment process of sludge organic matters, the method is characterized in that: the method comprises the following steps:
s1, carrying out pretreatment such as concentration and dehydration on the water-containing sludge to reduce the solid content of the sludge to about 15%;
s2, conveying the sludge into a pretreatment tank, introducing steam to preheat the sludge, and stirring and uniformly mixing the sludge through a circulating pump;
s3, conveying the sludge into a high-pressure thermal reaction tank, introducing high-temperature high-pressure saturated steam to heat and pressurize the sludge, controlling the pressure between 1.1Mpa and 1.2Mpa, and keeping the temperature of the sludge at about 188 ℃ to keep the water in a liquid state;
s4, allowing the sludge to stay in the high-pressure thermal reaction tank for a period of time, spraying the sludge into the pressure relief tank through the pressure difference of nearly 1Mpa, and simultaneously refluxing the generated steam into the pretreatment tank;
s5, conveying the high-pressure thermal cracking sludge into an anaerobic reactor, carrying out anaerobic digestion operation with high solid content on the sludge under the anaerobic condition, and conveying the biogas generated in the process to a boiler for providing high-pressure steam;
s6, conveying the sludge into a thermal hydrolysis reactor, and performing low-temperature thermal hydrolysis treatment on the sludge;
and S7, carrying out secondary harmless treatment on the sludge, conveying the sludge to a brick making workshop through a sludge outward transport vehicle, and firing the sludge into the environment-friendly brick.
2. The high-temperature high-pressure cracking treatment process for sludge organic matters according to claim 1, which is characterized in that: in S1, the process of pretreating the water-containing sludge includes the steps of:
s1.1, filtering sludge, and screening out large granular impurities with the size larger than 3cm in the sludge;
s1.2, concentrating the sludge, reducing the water content of the sludge to about 95%, and simultaneously mixing the discharged sewage into the original sewage for treatment;
s1.3, adding a dehydrating agent into the sludge, dehydrating the sludge, and reducing the solid content of the sludge to about 15%;
s1.4, conveying the sludge to a sludge tank for sludge storage for subsequent operation and use.
3. The high-temperature high-pressure cracking treatment process for sludge organic matters according to claim 2, which is characterized in that: in S1.3, the dehydrating agent comprises the following raw materials in parts by weight: NaHCO 2350-60 parts of FeCl310-15 parts of hydrogen peroxide with the mass concentration of 85%.
4. The high-temperature high-pressure cracking treatment process for sludge organic matters according to claim 1, which is characterized in that: in the step S2, the preheating temperature of the sludge is 95-105 ℃.
5. The high-temperature high-pressure cracking treatment process for sludge organic matters according to claim 1, which is characterized in that: in the step S4, the staying time of the sludge in the high-pressure heat reaction tank is 15-60 min.
6. The high-temperature high-pressure cracking treatment process for sludge organic matters according to claim 1, which is characterized in that: in S5, the reaction process of anaerobic digestion of sludge includes the following steps:
s5.1, conveying the sludge into an anaerobic reactor, and pumping away oxygen to perform an extracellular enzymatic reaction process on the sludge;
s5.2, conveying the sludge into an acid fermentation reactor to degrade soluble matrixes in the sludge;
s5.3, conveying the sludge into an alkaline fermentation reactor, so that acidification products in the sludge are converted into acetic acid, and low hydrogen and formic acid concentrations are maintained in the process;
s5.4, the acetic acid is decomposed into methane and carbon dioxide under the action of acetic acid nutritional methanogens.
7. The high-temperature high-pressure cracking treatment process for sludge organic matters according to claim 1, which is characterized in that: in the step S6, the conditions in the low-temperature thermal hydrolysis reaction process are: setting the temperature T at 65-75 ℃, setting the hydrolysis time HRT at 1-1.5 d, and adding NaOH to adjust the ph to 9.5-10.5.
8. The high-temperature high-pressure cracking treatment process for sludge organic matters according to claim 1, which is characterized in that: the sludge outward transport vehicle in the step S7 comprises a sludge vehicle body (1), wherein the rear end of the sludge vehicle body (1) is hinged with a main compartment (2), the main compartment (2) comprises an outer vehicle hopper (21), the top end of the outer vehicle hopper (21) is hinged with an outer top cover (22) through a hinge, the rear end of the outer vehicle hopper (21) is hinged with a rear outer cover plate (23) through two groups of crank connecting rods (24), the front end of each crank connecting rod (24) is provided with an air cylinder (25), a heat preservation compartment (3) is fixedly clamped in the main compartment (2), the heat preservation compartment (3) comprises an inner vehicle hopper (31), two sides of the top end of the inner vehicle hopper (31) are hinged with inner top covers (32) through hinges, and the rear end of the inner vehicle hopper (31) is hinged with a rear inner baffle (33) through hinges.
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| CH657604A5 (en) * | 1982-08-06 | 1986-09-15 | Buchs Umwelttech Utb | Process for the anaerobic treatment of sewage sludge and apparatus for carrying out the process |
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| CN107265806A (en) * | 2017-08-07 | 2017-10-20 | 深圳市海源能源科技有限公司 | A kind of excess sludge handling process based on carbon source reuse |
| CN109095751A (en) * | 2018-09-13 | 2018-12-28 | 左健 | A kind of method of lower temperature thermokalite resolution process activated sludge |
| CN110562118A (en) * | 2019-10-14 | 2019-12-13 | 中国水利水电第九工程局有限公司 | Concrete truck and automatic sun-shading and heat-insulating truck hopper |
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2021
- 2021-01-15 CN CN202110053566.0A patent/CN112811764A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH657604A5 (en) * | 1982-08-06 | 1986-09-15 | Buchs Umwelttech Utb | Process for the anaerobic treatment of sewage sludge and apparatus for carrying out the process |
| US5785852A (en) * | 1995-04-06 | 1998-07-28 | Midwest Research Institute | Pretreatment of high solid microbial sludges |
| CN102424508A (en) * | 2011-10-28 | 2012-04-25 | 广西博世科环保科技股份有限公司 | Sludge pyrolytic digestion process for efficiently recovering heat energy and equipment thereof |
| CN103304124A (en) * | 2013-04-22 | 2013-09-18 | 宁波富仕达电力工程有限责任公司 | Sludge drying treatment system and process |
| CN106673387A (en) * | 2016-11-24 | 2017-05-17 | 上海洗霸科技股份有限公司 | Recycling treatment process of phenol-containing sludge |
| CN107265806A (en) * | 2017-08-07 | 2017-10-20 | 深圳市海源能源科技有限公司 | A kind of excess sludge handling process based on carbon source reuse |
| CN109095751A (en) * | 2018-09-13 | 2018-12-28 | 左健 | A kind of method of lower temperature thermokalite resolution process activated sludge |
| CN110562118A (en) * | 2019-10-14 | 2019-12-13 | 中国水利水电第九工程局有限公司 | Concrete truck and automatic sun-shading and heat-insulating truck hopper |
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