CN106316031B - Vertical solar reinforced sludge deep biological drying system - Google Patents
Vertical solar reinforced sludge deep biological drying system Download PDFInfo
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- CN106316031B CN106316031B CN201610877193.8A CN201610877193A CN106316031B CN 106316031 B CN106316031 B CN 106316031B CN 201610877193 A CN201610877193 A CN 201610877193A CN 106316031 B CN106316031 B CN 106316031B
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- 238000001035 drying Methods 0.000 title claims abstract description 130
- 239000010802 sludge Substances 0.000 title claims abstract description 74
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 23
- 239000010935 stainless steel Substances 0.000 claims abstract description 23
- 238000005273 aeration Methods 0.000 claims abstract description 15
- 239000002689 soil Substances 0.000 claims abstract description 11
- 239000002131 composite material Substances 0.000 claims abstract description 6
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 6
- 239000012528 membrane Substances 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 69
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 230000000694 effects Effects 0.000 claims description 11
- 238000000855 fermentation Methods 0.000 claims description 7
- 230000004151 fermentation Effects 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 5
- 239000012467 final product Substances 0.000 claims description 5
- 230000000813 microbial effect Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 3
- 238000010564 aerobic fermentation Methods 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 6
- 238000004064 recycling Methods 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 abstract description 4
- 230000001808 coupling effect Effects 0.000 abstract description 3
- 238000010168 coupling process Methods 0.000 abstract description 2
- 244000005700 microbiome Species 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 19
- 238000005516 engineering process Methods 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 7
- 239000010865 sewage Substances 0.000 description 6
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 4
- 230000018044 dehydration Effects 0.000 description 4
- 238000006297 dehydration reaction Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 4
- 239000010902 straw Substances 0.000 description 3
- 239000011362 coarse particle Substances 0.000 description 2
- 238000009264 composting Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 238000012216 screening Methods 0.000 description 2
- 230000001932 seasonal effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- -1 bran Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000011038 discontinuous diafiltration by volume reduction Methods 0.000 description 1
- 239000011363 dried mixture Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000002550 fecal effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 244000000010 microbial pathogen Species 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 235000021049 nutrient content Nutrition 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000000191 radiation effect Effects 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Classifications
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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
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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
-
- 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
-
- 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
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Landscapes
- 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)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Treatment Of Sludge (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses a vertical solar reinforced sludge deep biological drying system, which performs drying treatment on dewatered sludge through a biological drying and solar drying two-stage coupling process. The system includes, but is not limited to, blendors, biological drying chambers, solar drying chambers, vibrating screens, blowers, aeration systems, gas collection systems, gas scrubbers, gas circulation systems, heat exchange devices, induced draft fans, and subsurface soil biofilters. The solar drying chamber is vertically arranged above the biological drying chamber, a hydrophobic composite membrane is paved on the inner side of the roof, and a stainless steel chain plate is arranged along the roof on one side or two sides. The invention realizes the rapid drying of the sludge by utilizing the coupling effect of the biological heat energy generated by the aerobic fermentation of the microorganism and the clean renewable energy source solar energy, has the characteristics of high drying efficiency, low operation energy consumption, small occupied area and the like, and improves the reduction and recycling utilization level of the sludge.
Description
Technical Field
The invention belongs to the technical field of resources and environment, and particularly relates to a vertical solar reinforced sludge deep biological drying system.
Background
Along with the rapid development of the sewage treatment industry of China towns, the number of sewage treatment plants is continuously increased, and the sludge production amount is also increased. At present, the number of the sewage treatment plants in China towns reaches more than 4000, and the annual production amount of the sludge is more than 4000 ten thousand tons (the water content is 80%). The sludge has high water content and huge volume, contains a large amount of refractory organic matters, heavy metals, pathogenic microorganisms, parasitic ova and the like, and is easy to cause secondary pollution and influence the environmental treatment effect if the sludge is not subjected to effective treatment. At present, the sludge treatment in China mainly comprises concentration and dehydration, but the water content of the sludge after concentration and dehydration is still up to 70% -80%, so that the desiccation treatment of the dehydrated sludge is a key for realizing the recycling treatment and utilization of the sludge.
The modern sludge drying process mainly comprises heat drying, and adopts an intensive sludge drying device to evaporate water in the sludge through an external heat source, so that the water content of the sludge is reduced. The energy consumption and the operation cost of the sludge heat drying are high, the operation management difficulty is high, the drying equipment has strict operation requirements, and the safety risk of explosion exists when the drying equipment is improperly operated. The Chinese sludge drying technology is still in a starting stage, and although more than ten sludge heat drying projects are built, most foreign technologies and equipment are introduced, and most universal dryers are adopted, so that the adaptability of the equipment is not ideal, the energy consumption of the system is generally high, the running cost is high, and the stable running is difficult to maintain. The Chinese sludge aerobic fermentation technology has been applied to a certain extent, but has the defects of long fermentation time, unobvious reduction effect, large occupied area and the like.
The foreign sludge drying technology starts earlier, and development of a novel efficient energy-saving technology and utilization of clean and low-cost energy (such as solar energy) are particularly focused in recent years. Biological desiccation is a novel sludge desiccation technology similar to aerobic composting, and utilizes biological heat energy generated by degrading organic matters in the process of microbial aerobic fermentation to realize rapid dehydration desiccation and volume reduction of materials. Biological desiccation aims at rapidly reducing the water content in the sludge, but no external energy source is added, so that the biological desiccation period has a shortened space, and the utilization of solar energy, namely clean energy, is a feasible way for adding the energy source.
The solar energy drying of the sludge mainly accelerates the evaporation of the water in the sludge outwards through the solar radiation effect, and then takes away the water on the surface of the sludge through natural circulation or ventilation. Compared with the traditional heat drying technology, the sludge solar drying technology has the advantages of low energy consumption and low operation management cost, and the power consumption for evaporating 1 t water is only 1/30 of that of the traditional heat drying technology. Nevertheless, the energy utilization efficiency of solar drying devices is low, requiring a longer residence time and a larger floor space, and therefore a sufficient available floor space at the sewage treatment plant. And the solar drying treatment effect is constrained by weather and seasonal conditions, so that uniform and continuous operation is difficult to keep, and for this purpose, many solar drying processes adopt heat collection or are combined with other auxiliary heat sources for application, but the process cost is increased. Moreover, even so, the results of the engineering application in Germany show that the sludge needs to stay in the drying workshop in the whole winter, which further increases the occupied area requirement of the solar drying device.
Therefore, aiming at the limitation of the technology, the sludge deep drying treatment process and system with high efficiency and low consumption are developed, and the method has important significance for promoting the recycling treatment and utilization of sludge and improving the level of the sludge treatment industry.
Disclosure of Invention
The invention aims to provide a vertical solar reinforced sludge deep biological drying system according to requirements of town sludge reduction and recycling treatment and characteristics of dewatered sludge, and the efficient low-consumption deep drying treatment of the dewatered sludge is realized by utilizing the principles of solar drying and microbial aerobic fermentation.
In order to achieve the above purpose, the technical scheme of the invention is as follows: the vertical solar reinforced sludge deep biological drying system is characterized by comprising a biological drying chamber, wherein an aeration system is arranged at the bottom of the biological drying chamber, and materials are rapidly biologically dried in the biological drying chamber;
The solar drying chamber is vertically arranged above the biological drying chamber, the discharge end of the biological drying chamber is communicated with the solar drying chamber through a dried sludge conveying device, and the rapid biological dried material further removes water under the action of solar greenhouse effect;
the output end of the solar drying chamber is connected to the vibrating screen, the vibrating screen screens the solar dried material, the oversize material flows back to the biological drying chamber as a return material, and the undersize material is a final product.
The inlet of the biological drying chamber is provided with a mixer, the mixer is provided with a dehydrated sludge feed inlet, a back-mixed material feed inlet and a discharge outlet, the back-mixed material feed inlet is connected to a vibrating screen through a pipeline, the discharge outlet is connected to the biological drying chamber through a pipeline, oversize materials of the vibrating screen enter the mixer from the back-mixed material feed inlet as back-mixed materials, and are uniformly mixed with dehydrated sludge entering from the dehydrated sludge feed inlet in the mixer, and are output to the biological drying chamber from the discharge outlet.
The top of the biological drying chamber is provided with a hydrogen sulfide sensor and an odor collection system, the odor collection system is connected to the underground soil biological filter bed through a pipeline through a gas scrubber, the pipeline section of the gas scrubber connected to the soil biological filter bed is also provided with a gas circulation system, and the output end of the gas circulation system is connected to the aeration system through a backflow pipeline.
The bottom of the biological drying chamber is provided with a telescopic temperature sensor, the temperature of the fermentation material is monitored in real time, the aeration system is connected with a blower, and the blower adjusts the air supply quantity of the aeration system on line according to the temperature change of the fermentation material.
The hydrophobic composite membrane is paved on the inner side of a roof of the solar drying chamber, a stainless steel chain plate is installed on the roof on one side or two sides of the solar drying chamber, a distributor is arranged above the input end of the stainless steel chain plate, the distributor is connected with a dried sludge outlet of the biological drying chamber through a dried sludge pipeline, the output end of the stainless steel chain plate is connected to a vibrating screen through a conveying pipeline, the vibrating screen screens materials after solar drying, oversize materials are used as return materials and flow back to a mixer, and undersize materials are final products.
The inclination angle of the stainless steel chain plate can be adjusted within the range of 15-30 degrees, and the height of the stainless steel chain plate from the roof of the solar drying chamber is 30-50 cm; the upper part of the stainless steel chain plate is provided with a vertical baffle plate for preventing materials from gathering downwards, and the height of the baffle plate is 10 cm-15 cm.
The system realizes the efficient low-consumption deep drying of the dewatered sludge by utilizing the coupling effect of biological heat energy generated by the aerobic fermentation of microorganisms and clean renewable energy source solar energy, and has the following beneficial effects:
1. the residence time of the sludge in the system is 5-10 d, which is only 1/6-1/2 of that of the aerobic composting process, the turning times are less or no turning is performed, and the treatment efficiency is greatly improved. The system is less influenced by weather and seasonal conditions, has good running stability, can keep continuous running, and does not need an auxiliary heat source.
2. Due to the coupling effect of clean energy sources such as biological heat energy, solar energy and the like, the operation energy consumption is lower than 12 kW.h/t of wet sludge (the water content is 80%). The gas circulation system and the heat exchange device are adopted, and the heat utilization efficiency of the system is high. Coarse particles and auxiliary materials after being screened by the vibrating screen flow back, the consumption of the auxiliary materials is reduced, the drying effect is enhanced, and the operation cost is lower.
3. The solar drying chamber and the biological drying chamber adopt a vertical superposition design, so that the occupied area of the secondary process is saved. The heat generated by microbial fermentation can provide an auxiliary heat source for the solar drying chamber, so that the operation efficiency and stability of the solar drying chamber are improved. The solar drying chamber can form an insulating layer for the biological drying chamber, heat dissipation is reduced, heat radiation can be formed for fermentation materials in the biological drying chamber when the single-side chain plate is used for running, and the smooth proceeding of the biological drying process is promoted. In addition, as the system processing efficiency increases, the footprint at the same processing scale decreases. The underground soil biological filter bed is adopted, so that the land can be saved, the underground soil biological filter bed can be designed with surrounding green lands in a unified way, and the environmental coordination of engineering is improved.
4. The biological drying chamber is provided with a gas collecting, washing and circulating system, so that the gas utilization efficiency is improved, the running energy consumption of the blower is saved, and the escape of odor substances is reduced.
Drawings
Fig. 1 is a flow chart of a vertical solar energy reinforced sludge deep biological drying process.
Numbering in the figures: 1 is dehydrated sludge; 2 is a mixer; 3 is a biological drying chamber; 4 is a material distributor; 5 is a solar drying chamber; 6 is a stainless steel chain plate; 7 is a condensed water tank; 8 is a vibrating screen; 9 is a blower; 10 is an aeration system; 11 is a temperature sensor; 12 is a hydrogen sulfide sensor; 13 is an odor collection system; 14 is a gas scrubber; 15 is a gas circulation system; 16 is a heat exchange device; 17 is induced draft fan; and 18 is an underground soil biological filter bed.
Detailed Description
The following describes the embodiments of the present invention further with reference to the drawings.
Example 1
As shown in fig. 1, the vertical solar reinforced sludge deep biological drying system and method provided by the invention are used for drying dewatered sludge through a biological drying and solar drying two-stage vertical coupling process, and the system consists of a mixer 2, a biological drying chamber 3, a distributor 4, a solar drying chamber 5, a vibrating screen 8, a blower 9, an aeration system 10, a temperature sensor 11, a hydrogen sulfide sensor 12, a gas collecting system 13, a gas scrubber 14, a gas circulating system 15, a heat exchange device 16, an induced draft fan 17 and an underground soil biological filter bed 18.
Wherein, aeration system 10 is set at the bottom of biological drying chamber 3, biological drying chamber 3 carries out biological drying to the material. The biological drying chamber 3 is characterized in that an aeration system 10 and a telescopic temperature sensor 11 sleeve are arranged under the concrete floor, the temperature of the fermented material is monitored in real time, and an air blower 9 adjusts the air supply quantity on line according to the temperature change of the fermented material, so that the biological drying effect is enhanced.
The solar drying chamber 5 is vertically arranged above the biological drying chamber 3, the discharge end of the biological drying chamber 3 is communicated with the solar drying chamber 5 through a dried sludge conveying device, and the rapid biological dried material further removes water under the action of solar greenhouse effect. The material after biological drying is solid, and the conveying mode comprises a belt conveyor, a screw pump and the like.
The output end of the vibrating screen 8 and the solar drying chamber 5 is connected to the vibrating screen 8, the vibrating screen 8 screens the solar dried material, the oversize material flows back to the biological drying chamber 3 as a return material, and the undersize material is a final product.
The top of the biological drying chamber 3 is provided with a hydrogen sulfide sensor 12 and an odor collection system 13; after entering the gas scrubber 14 for washing, the collected odor partially flows back to the aeration system 10 through the gas circulation system 15, so that the air supply quantity of the blower 9 and the release of odor substances are reduced; the exhaust gas is sent to an underground soil biological filter bed 18 for filtration by an induced draft fan 17 after further recovering heat in a heat exchange device 16, and is discharged to the atmosphere.
A hydrophobic composite membrane is paved on the inner side of a roof of the solar drying chamber 5, and water evaporated from the material is gathered to a condensate tank 7 through the hydrophobic composite membrane and is discharged out of the system; according to the design requirement of the system, a stainless steel chain plate 6 is arranged along a single-side or double-side roof of the solar drying chamber 5; the inclination angle of the stainless steel chain plate 6 can be adjusted within the range of 15-30 degrees, and the height of the stainless steel chain plate from the roof of the solar drying chamber 5 is 30-50 cm; the upper portion of the stainless steel chain plate 6 is provided with a vertical baffle plate for preventing materials from gathering downwards, and the height of the baffle plate is 10 cm-15 cm. The link plate is horizontally movable. 2. One drying cycle is a stroke, the chain plate is circulated to the input end after moving to the bottom, and the next drying cycle is started.
The method comprises the following specific process flows: the dewatered sludge 1 enters a mixer 2, and according to the process design requirement, the return mixture accounting for 20% -60% of the weight of the dewatered sludge is returned from a vibrating screen 8 to the mixer 2, and auxiliary materials accounting for 10% -20% of the weight of the dewatered sludge are added, for example: straw, bran, wood dust and the like, and adjusting the water content of the mixed material to 55% -65%; conveying the mixed material into a biological drying chamber 3 for rapid aerobic fermentation, wherein the fermentation time is 5-7 d; the gas in the biological drying chamber 3 enters a gas scrubber 14 for pickling through an odor collecting system 13, and partially flows back to an aeration system 10 through a gas circulating system 15, wherein the reflux amount is 50% -100%, and the discharged gas is sent to an underground soil biological filter bed 18 for filtering through an induced draft fan 17 after heat is further recovered in a heat exchange device 16 and is discharged into the atmosphere; the material after biological drying is uniformly distributed on a stainless steel chain plate 6 in a solar drying chamber 5 above a biological drying chamber 3 through a distributor 4, the material slowly moves along with the stainless steel chain plate 6, and further removes water under the action of solar greenhouse effect, and the drying time is 1-5 d; the water evaporated from the materials in the solar drying chamber 5 is gathered to a condensate tank 7 through a hydrophobic composite membrane of a roof and is discharged out of the system, the dried materials are conveyed to a vibrating screen 8 for screening, the oversize materials are returned to the mixer 2 as return materials and are mixed with the dewatered sludge 1, and the undersize materials are final products.
The system and the method are applied to a sewage treatment plant in a certain town, the design treatment scale is 8 ten thousand m 3/d, the sewage biological treatment adopts an A 2/O technology, the sludge treatment adopts gravity concentration and centrifugal dehydration, and the water content of the dehydrated sludge is 74% -78%. In order to solve the problem of sludge digestion, a dehydrated sludge drying project is built, and the concrete steps are as follows:
1. The yield of the dehydrated sludge is 50-60 t/d, the water content is 74-78%, and the dehydrated sludge is conveyed to the horizontal spiral mixer 2 through a conveying belt. And adding crushed straw and coarse particle return materials screened by a vibrating screen 8 while conveying, and adjusting the water content of the mixed materials to be 55% -65%, wherein the adding amount of the straw and the return materials is 6-8 t/d and 20-30 t/d respectively.
2. The materials uniformly mixed in the mixer 2 are conveyed to the biological drying chamber 3 through a conveying belt, and the air supply quantity and the air return quantity of the air blower 8 are regulated on line by monitoring the temperature of the materials in real time. After 5d of biological drying treatment, the water content of the mixed material is reduced to about 45 percent.
3. The mixed material after biological drying is uniformly distributed on a stainless steel chain plate 6 in a solar drying chamber 5 through a distributor 4, the material slowly moves along with the stainless steel chain plate 6, moisture is further removed under the action of solar greenhouse effect, and the drying time is 1-5 d according to weather and season changes.
4. And (3) conveying the dried mixture to a vibrating screen 8 for screening, and conditioning and inoculating the dehydrated sludge by using the oversize material as a return material, wherein the undersize material is a final product, and the water content is 25% -35%. The dewatered sludge can be reduced by more than 50 percent, and the reduction effect is obvious. The final product has a lower calorific value of more than 8000kJ/kg, the fecal coliform is not detected, the sanitation condition is good, the nutrient content is higher, and the resource utilization potential is better.
Claims (4)
1. The vertical solar reinforced sludge deep biological drying system is characterized by comprising a biological drying chamber, wherein an aeration system is arranged at the bottom of the biological drying chamber, and materials are rapidly biologically dried in the biological drying chamber;
The solar drying chamber is vertically arranged above the biological drying chamber, the discharge end of the biological drying chamber is communicated with the solar drying chamber through a dried sludge conveying device, and the rapid biological dried material further removes water under the action of solar greenhouse effect;
The output end of the solar drying chamber is connected to the vibrating screen, the vibrating screen screens the solar dried material, the oversize material flows back to the biological drying chamber as a return material, and the undersize material is a final product;
A hydrophobic composite membrane is paved on the inner side of a roof of the solar drying chamber, a stainless steel chain plate is arranged along the roof of the solar drying chamber on one side or two sides, a distributor is arranged above the input end of the stainless steel chain plate, the distributor is connected with the discharge end of the biological drying chamber through a dried sludge conveying device, and the output end of the stainless steel chain plate is connected to a vibrating screen through a conveying pipeline; stainless steel chain plates are arranged along the roof of the solar drying chamber on one side or two sides; the inclination angle of the stainless steel chain plate is adjusted within the range of 15-30 degrees, the height of the stainless steel chain plate from a roof of the solar drying chamber is 30-50 cm, the upper portion of the stainless steel chain plate is provided with a vertical baffle plate for preventing materials from gathering downwards, the height of the baffle plate is 10-15 cm, and heat generated by microbial fermentation can provide an auxiliary heat source for the solar drying chamber.
2. The vertical solar reinforced sludge deep biological drying system according to claim 1, wherein a mixer is arranged at an inlet of the biological drying chamber, the mixer is provided with a dehydrated sludge feed inlet, a back-mixed material feed inlet and a discharge outlet, the back-mixed material feed inlet is connected to a vibrating screen through a pipeline, the discharge outlet is connected to the biological drying chamber through a pipeline, oversize materials of the vibrating screen enter the mixer as a back-mixed material from the back-mixed material feed inlet, are uniformly mixed with the dehydrated sludge entering from the dehydrated sludge feed inlet, and are output to the biological drying chamber from the discharge outlet.
3. The vertical solar reinforced sludge deep biological drying system according to claim 1, wherein the top of the biological drying chamber is provided with an odor collection system, the odor collection system is connected to an underground soil biological filter bed through a pipeline via a gas scrubber, a pipeline section of the gas scrubber connected to the soil biological filter bed is further provided with a gas circulation system, and an output end of the gas circulation system is connected to an aeration system through a backflow pipeline.
4. The vertical solar reinforced sludge deep biological drying system according to claim 1, wherein the bottom of the biological drying chamber is provided with a telescopic temperature sensor, the temperature of the fermented material is monitored in real time, the aeration system is connected with a blower, and the blower adjusts the air supply quantity of the aeration system on line according to the temperature change of the fermented material.
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| CN107012073B (en) * | 2017-06-01 | 2023-11-14 | 北京首创污泥处置技术有限公司 | Aerobic fermentation system |
| CN107311427A (en) * | 2017-08-01 | 2017-11-03 | 江苏金山环保科技有限公司 | A kind of solar energy, ultrasonic synergistic desiccation film case |
| CN109796118A (en) * | 2019-02-01 | 2019-05-24 | 九洲环境科技(天津)有限公司 | A kind of band has surplus heat the sludge Equipment for Heating Processing and method of recycling |
| CN112794592B (en) * | 2020-12-07 | 2022-10-14 | 苏州工业园区中法环境技术有限公司 | Residual sludge utilizes quick mummification device of biological heat energy |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102992570A (en) * | 2011-09-09 | 2013-03-27 | 同济大学 | Electric-regenerative solar energy assisted sludge biodrying system |
| CN206127087U (en) * | 2016-10-09 | 2017-04-26 | 上海市政工程设计研究总院（集团）有限公司 | Mud degree of depth biodrying system is reinforceed to vertical solar energy |
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| CN101143758A (en) * | 2006-09-12 | 2008-03-19 | 镇江同盛环保设备工程有限公司 | Sludge resource treatment complete equipment for urban sewage treatment plant |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102992570A (en) * | 2011-09-09 | 2013-03-27 | 同济大学 | Electric-regenerative solar energy assisted sludge biodrying system |
| CN206127087U (en) * | 2016-10-09 | 2017-04-26 | 上海市政工程设计研究总院（集团）有限公司 | Mud degree of depth biodrying system is reinforceed to vertical solar energy |
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