CN112142290A - Medical sludge collecting and treating system and method - Google Patents
Medical sludge collecting and treating system and method Download PDFInfo
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- CN112142290A CN112142290A CN202011174165.2A CN202011174165A CN112142290A CN 112142290 A CN112142290 A CN 112142290A CN 202011174165 A CN202011174165 A CN 202011174165A CN 112142290 A CN112142290 A CN 112142290A
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 239000000428 dust Substances 0.000 claims abstract description 58
- 238000001035 drying Methods 0.000 claims abstract description 40
- 238000011282 treatment Methods 0.000 claims abstract description 40
- 239000002918 waste heat Substances 0.000 claims abstract description 31
- 230000001954 sterilising effect Effects 0.000 claims abstract description 9
- 238000004659 sterilization and disinfection Methods 0.000 claims description 24
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000010438 heat treatment Methods 0.000 claims description 18
- 239000007789 gas Substances 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- 230000000249 desinfective effect Effects 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract 1
- 239000000645 desinfectant Substances 0.000 description 14
- 239000002245 particle Substances 0.000 description 10
- 238000002485 combustion reaction Methods 0.000 description 8
- 244000000010 microbial pathogen Species 0.000 description 8
- 239000002351 wastewater Substances 0.000 description 5
- 239000002906 medical waste Substances 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 208000015181 infectious disease Diseases 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 239000002912 waste gas Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 241000700605 Viruses Species 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000002458 infectious effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- ZILVNHNSYBNLSZ-UHFFFAOYSA-N 2-(diaminomethylideneamino)guanidine Chemical compound NC(N)=NNC(N)=N ZILVNHNSYBNLSZ-UHFFFAOYSA-N 0.000 description 1
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- 244000052616 bacterial pathogen Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
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- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 150000002978 peroxides Chemical class 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 150000003242 quaternary ammonium salts Chemical class 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000003206 sterilizing agent Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
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Images
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
- C02F11/12—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
-
- 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
- C02F11/004—Sludge detoxification
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/06—Treatment of sludge; Devices therefor by oxidation
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/003—Wastewater from hospitals, laboratories and the like, heavily contaminated by pathogenic microorganisms
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/06—Sludge reduction, e.g. by lysis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/10—Energy recovery
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Sludge (AREA)
Abstract
The invention discloses a medical sludge collecting and treating system and a medical sludge collecting and treating method, which comprise a sterilizing room, a drying machine, an incinerator, a dust removal device and a waste heat boiler, wherein the drying machine, the incinerator and the dust removal device are communicated with each other; the treatment system can effectively utilize the existing equipment, has reasonable integral design, can thoroughly treat the medical sludge, achieves harmless, quantitative reduction and resource treatment, has low energy consumption in the treatment process, pays attention to resource recovery, and brings good economic benefit for enterprises.
Description
Technical Field
The invention relates to the field of harmless treatment of medical wastes, in particular to a medical sludge collecting and treating system and a medical sludge collecting and treating method.
Background
The medical sludge is formed by sewage precipitation generated by various departments of medical institutions, has complex sources and components, contains pathogenic microorganisms, toxic and harmful physicochemical pollutants and the like, is extremely infectious to the pathogenic microorganisms such as infectious bacteria, viruses and the like, the sludge produced by the hospital wastewater treatment belongs to medical waste and should be treated according to the relevant technical specifications of the medical waste incinerator (trial) according to the technical requirements of the medical waste incinerator (GB 19218-2003).
At present, sludge generated in wastewater of medical institutions in China is not effectively treated, which is mainly caused by the following reasons: 1. the medical institutions are scattered, and the sludge is not beneficial to centralized treatment; 2. the amount of sludge generated in the wastewater of the medical institution is limited, and the cost of self-disposal is high; 3. sludge generated by the wastewater of the medical institution is not suitable for being treated together with general sludge, contains a large amount of germs and needs special treatment technology; 4. because the sludge production is limited, the economic benefit of resource utilization after treatment is low. Therefore, harmless, reduced and resource treatment of wastewater and sludge in medical institutions still needs to be solved.
Disclosure of Invention
The invention aims to solve the technical problem of the prior art and provides a medical sludge collecting and treating system and a medical sludge collecting and treating method.
In order to solve the technical problems, the invention adopts the following technical scheme: the utility model provides a medical sludge collecting and processing system, includes desiccator, burns burning furnace, dust collector and exhaust-heat boiler, and wherein, desiccator and dust collector intercommunication each other, exhaust-heat boiler communicate respectively through the pipeline and burn burning furnace and desiccator, will burn burning furnace heat and introduce the desiccator, obtain innoxious lime-ash behind drier, dust collector and the burning furnace with medical sludge in proper order. Steam generated by the waste heat boiler is used as a main drying heat source for heating medical sludge in the dryer, and the dried sludge is collected by the dust removal device and then sent to the incinerator for incineration.
Preferably, further comprises a sterilization chamber, which is communicated with the dryer; and putting the collected wet medical sludge into a disinfection room for disinfection.
Preferably, the dust removing device comprises a cyclone dust collector, a bag-type dust collector and a circulating fan, the cyclone dust collector or the bag-type dust collector is communicated with the dryer and used for collecting the medical sludge dried by the dryer, the bag-type dust collector is communicated with the circulating fan, and the circulating fan is communicated with the dryer.
Preferably, the waste heat boiler further comprises a condenser which is arranged between the dryer and the waste heat boiler through a pipeline, and the waste steam after heating the dryer is cooled by the condenser.
Preferably, the medical sludge drying system further comprises a dry sludge storage room, a sludge bin, a first screw conveyor or a second screw conveyor, wherein the sludge bin is connected with the disinfection room, the first screw conveyor is connected between the sludge bin and the drying machine, wet medical sludge disinfected by the disinfection room enters the sludge bin to be stored, and after a certain amount of wet medical sludge is obtained, the wet medical sludge enters the drying machine to be dried; the second screw conveyer is communicated with the dust removal device and the incinerator, the sludge storage room is arranged between the second screw conveyer and the incinerator, and the second screw conveyer is used for placing dried sludge collected by the dust removal device into the sludge storage room, storing a certain amount of the dried sludge and then putting the sludge into the incinerator for incineration.
A medical sludge collecting and treating method specifically comprises the following steps:
step 1, putting the collected wet medical sludge into a dryer for drying;
step 2, the dried sludge after passing through the dryer enters a dust removal device for collection;
step 3, putting the collected dried sludge into an incinerator for incineration;
and 4, heating the waste heat boiler by the incinerator, and sending the generated steam into a dryer for heating and drying.
Preferably, the method further comprises a step 11 of feeding the collected wet medical sludge into a disinfection room, adding a disinfectant for disinfection, and then putting the sludge into a dryer for drying.
Preferably, the method further comprises a step 21 of introducing residual heat air in the dust removal device into an inlet of the dryer through a circulating fan, preheating wet medical sludge at the inlet, and sending the other part of residual heat air into the incinerator to participate in incineration so as to generate harmless gas.
And 22, adsorbing the incinerated harmless gas by using activated carbon.
Preferably, the method further comprises a step 41 of cooling the dead steam generated after the dryer is heated by the steam in the condenser, and re-entering the obtained condensed water into the waste heat boiler for heating.
Preferably, in step 4, the hot gas generated by the incinerator is transmitted to a waste heat boiler, and the generated hot steam is output to a dryer for drying the wet medical sludge.
The invention relates to a medical sludge collecting and treating system and a medical sludge collecting and treating method, wherein collected medical sludge is firstly disinfected in a disinfection room, then is dried in a dryer, and is collected and dried by a dust removal device after being dried, and then is burnt in an incinerator to form harmless ash slag, the incinerator heats a waste heat boiler, and the generated steam heats the dryer to dry the medical sludge. The invention can utilize part of the existing equipment of the innocent treatment enterprise to carry out innocent and quantitative reduction treatment on the medical sludge, simultaneously reduces the equipment investment, effectively reduces the treatment cost, pays attention to heat recycling in the treatment process, saves energy and reduces emission, saves the production cost for the enterprise, and brings good economic benefit.
Drawings
FIG. 1 is a schematic view of a medical sludge collection and treatment system according to the present invention;
FIG. 2 is a detailed schematic view of a medical sludge collection and treatment system according to the present invention;
FIG. 3 is a schematic view of a medical sludge collection and treatment method of the present invention
FIG. 4 is a detailed schematic view of a medical sludge collection and treatment method according to the present invention;
in the figure, 200 is a dust removing device, 1 is a dryer, 2 is a waste heat boiler, 21 is a condenser, 3 is a cyclone dust remover, 4 is a bag-type dust remover, 41 is a circulating fan, 5 is a disinfection room, 6 is a sludge bin, 71 is a first screw conveyer, 72 is a second screw conveyer, 8 is a dry sludge storage room, and 9 is an incinerator.
Detailed Description
In the embodiment, referring to fig. 1, the medical sludge collection and treatment system comprises a dryer 1, an incinerator 9, a dust removal device 200 and a waste heat boiler 2, wherein the dryer 1 and the dust removal device 200 are communicated with each other, the waste heat boiler 2 is respectively communicated with the incinerator 9 and the dryer 1 through pipelines, heat of the incinerator 9 is introduced into the dryer 1, medical sludge is sequentially treated by the dryer 1, the dust removal device 200 and the incinerator 9, organic matters in the medical sludge are combusted at high temperature to form water and carbon dioxide and simultaneously generate heat, inorganic matters are combusted to harmless ash residues, steam generated by the waste heat boiler 2 is used as a main heat source for drying, a steam pipeline is arranged in a shell of the dryer 1, steam of the waste heat boiler 2 is introduced into the shell of the dryer 1 at a pressure of 0.1-0.5MPa and a temperature of 100-150 ℃ and is subjected to heat conduction in a countercurrent heat exchange manner with the sludge, the wet medical sludge in the dryer 1 is heated. The existing incinerator 9 and waste heat boiler 2 of the available innocent treatment enterprise effectively reduce the cost of the treatment system, and the perfect waste gas treatment system of the existing incinerator 9 can further reduce the system emission.
The medical sludge disinfection system further comprises a disinfection room 5 which is communicated with the drying machine 1, the water content of the collected wet medical sludge is 80-86%, the wet medical sludge is firstly put into the disinfection room 5 before entering the drying machine 1, a disinfectant is added into the medical sludge and mixed with the medical sludge to kill pathogenic microorganisms in the medical sludge, the toxicity is reduced, the pollution in subsequent processes is reduced, the types of the disinfectant comprise chlorine-containing disinfectants, peroxide disinfectants, aldehyde disinfectants, alcohol disinfectants, iodine-containing disinfectants, phenol disinfectants, ethylene oxide, biguanidine disinfectants and quaternary ammonium salt disinfectants, and the disinfection time is 10-20 min.
Referring to fig. 2, the dust removing device 200 comprises a cyclone dust collector 3, a bag-type dust collector 4 and a circulating fan 41, wherein the cyclone dust collector 3 or the bag-type dust collector 4 is communicated with the dryer 1, the water content of the collected dry sludge dried by the dryer 1 is 35-40%, the bag-type dust collector 4 is communicated with the circulating fan 4, and the circulating fan 41 is communicated with the dryer 1; the cyclone dust collector 3 is used for collecting dry sludge with larger particles, and the residual dry sludge with smaller particles is filtered and collected by the bag-type dust collector 4.
The system further comprises a condenser 2 which is arranged between the dryer 1 and the waste heat boiler 2 through a pipeline, the condenser cools the exhaust steam after the dryer 1 is heated, the condensed water enters the waste heat boiler 2 again for circulation, and water for the waste heat boiler 2 is saved.
The system further comprises a dry sludge storage room 8, a sludge bin 6, a first spiral conveyor 71 and a second spiral conveyor 72, wherein the sludge bin 6 is connected with the disinfection room 5, the disinfected medical sludge enters the sludge bin for storage, and is conveyed to the dryer 1 for drying when reaching a certain amount, and when the amount of the medical sludge is less, the efficiency of the system during starting can be improved; the first screw conveyor 71 is connected between the sludge bin 6 and the dryer, and the first screw conveyor 71 conveys wet medical sludge from the sludge bin 6 to the dryer 1; the second screw conveyer 72 is communicated with the dust removing device 200 and the incinerator 9, and the sludge storage room 8 is arranged between the second screw conveyer 72 and the incinerator 9 and used for storing dry sludge and throwing the dry sludge into the incinerator 9 for incineration after reaching a certain amount.
Referring to fig. 3, a medical sludge collection and treatment method specifically includes the following steps:
step 1, putting the collected wet medical sludge with the water content of 80-86% into a dryer 1 for drying;
step 2, the water content of the dry sludge passing through the dryer 1 is 35-40%, the dry sludge enters a dust removal device 200, about 90% of large-particle dry sludge can be collected by a cyclone dust collector 3, and the rest 10% of the large-particle dry sludge is filtered and collected by a bag-type dust collector;
step 3, feeding the collected granular dried sludge (with a calorific value of 1800Kcal/kg) into an incinerator 9 for co-combustion (with a 15% co-combustion ratio) at the temperature of 300-400 ℃;
and 4, heating the exhaust-heat boiler 2 by the incinerator 9, and sending the generated steam into the dryer 1 for heating and drying.
Referring to fig. 4, further comprising step 11, the collected wet medical sludge is introduced into a sterilization booth 5, sterilized by adding a sterilizing agent, sterilized to kill pathogenic microorganisms in the medical sludge, and then introduced into a dryer 1 for drying.
The method further comprises a step 21, wherein the temperature of the residual heat air in the dust removal device 200 is 100-120 ℃, the residual heat air is guided into the inlet of the dryer 1 through the circulating fan 41 to preheat wet medical sludge at the inlet of the dryer 1, so that the drying energy consumption is reduced, the other part of the residual heat air is sent into the incinerator to be burnt, and the residual heat air reaches the emission standard and is discharged into the external atmosphere after passing through a tail gas treatment system of the incinerator.
Further comprising a step 41, the exhaust steam generated after the dryer 1 is heated by steam is cooled in the condenser 21, and the obtained condensed water enters the waste heat boiler 2 again for heating.
Example 1:
a medical sludge collecting and treating method specifically comprises the following steps:
step 1, putting the collected wet medical sludge with the water content of 80-86% into a dryer 1 for drying;
step 11, the collected wet medical sludge enters a disinfection room 5, the medical sludge is disinfected by adding a disinfectant to kill pathogenic microorganisms in the medical sludge, then the medical sludge is put into a high-pressure membrane filter press for pre-drying to obtain semi-dry sludge with the water content of 55-60%, and then the semi-dry sludge is put into a dryer 1 for drying;
step 2, the water content of the dry sludge passing through the dryer 1 is 35-40%, the dry sludge enters a dust removal device 200, about 90% of large-particle dry sludge can be collected by a cyclone dust collector 3, and the rest 10% of the large-particle dry sludge is filtered and collected by a bag-type dust collector;
step 3, putting the collected granular dried sludge (with a calorific value of 1800Kcal/kg) into an incinerator 9 for co-combustion (with a co-combustion ratio of 15%) at 300 ℃;
and 4, heating the exhaust-heat boiler 2 by the incinerator 9, and sending the generated steam into the dryer 1 for heating and drying.
Example 2:
a medical sludge collecting and treating method specifically comprises the following steps:
step 1, putting the collected wet medical sludge with the water content of 80% into a dryer 1 for drying;
step 11, the collected wet medical sludge enters a disinfection room 5, the medical sludge is disinfected by adding a disinfectant to kill pathogenic microorganisms in the medical sludge, then the medical sludge is put into a high-pressure membrane filter press for pre-drying to obtain semi-dry sludge with the water content of 55-60%, and then the semi-dry sludge is put into a dryer 1 for drying;
step 2, the water content of the dry sludge passing through the dryer 1 is 35 percent, the dry sludge enters a dust removal device 200, a cyclone dust collector 3 can collect about 90 percent of large-particle dry sludge, and the rest 10 percent of the large-particle dry sludge is filtered and collected by a bag-type dust collector;
and step 21, introducing waste heat air in the dust removal device into an inlet of a dryer through a circulating fan, preheating wet medical sludge at the inlet, and sending the other part of the waste heat air into an incinerator to participate in incineration to generate harmless gas.
And 22, adsorbing the incinerated harmless gas by using activated carbon.
Step 3, feeding the collected granular dried sludge (with a calorific value of 1800Kcal/kg) into an incinerator 9 for co-combustion (with a 15% co-combustion ratio) at a temperature of 350 ℃;
and 4, heating the exhaust-heat boiler 2 by the incinerator 9, and sending the generated steam into the dryer 1 for heating and drying.
Example 3:
a medical sludge collecting and treating method specifically comprises the following steps:
step 1, putting the collected wet medical sludge with the water content of 86% into a dryer 1 for drying;
step 11, the collected wet medical sludge enters a disinfection room 5, the medical sludge is disinfected by adding a disinfectant to kill pathogenic microorganisms in the medical sludge, then the medical sludge is put into a high-pressure membrane filter press for pre-drying to obtain semi-dry sludge with the water content of 55-60%, and then the semi-dry sludge is put into a dryer 1 for drying;
step 2, the water content of the dry sludge passing through the dryer 1 is 40 percent, the dry sludge enters a dust removal device 200, a cyclone dust collector 3 can collect about 90 percent of large-particle dry sludge, and the rest 10 percent of the large-particle dry sludge is filtered and collected by a bag-type dust collector;
step 3, putting the collected granular dried sludge (with a calorific value of 1800Kcal/kg) into an incinerator 9 for co-combustion (with a 15% co-combustion ratio) at the temperature of 400 ℃;
and 4, heating the exhaust-heat boiler 2 by the incinerator 9, and sending the generated steam into the dryer 1 for heating and drying.
Through the multi-stage disinfection, step-by-step separation, drying, incineration and other process treatments, the medical sludge with high humidity is subjected to deep disinfection and sterilization treatment, most of viruses and bacteria are disinfected and sterilized, and the problems of environmental pollution and infection source diffusion caused by subsequent discharge are solved; then, the hot steam generated in the waste heat boiler is heated, dried and dehydrated in the pipeline through the heat of the pipeline in the dryer 1 by the pushing of the first screw conveyer 71, so that most of water in the medical sludge is removed, the sludge is conveniently collected in a centralized manner after being dried, and bacteria in the sludge can be deeply decomposed. Hot steam in the pipeline is led out through the dryer 1 to generate dead steam, the dead steam is transmitted to the condenser 21 to be subjected to cooling treatment, the temperature in the reflux waste heat boiler 2 is raised again to be converted into steam, and the steam is transmitted back to the dryer 1 to be repeatedly reheated and dried to obtain sludge, so that the steam conversion rate can be improved, energy is saved, and emission is reduced. After drying, carry the mummified mud to cyclone 3, collect most large granule silt and collect, add sack cleaner 4 and can collect the dust in the mummified mud, transmit back the desiccator via circulating fan 41 again. The dry sludge collected by the cyclone dust collector is transmitted to the dry sludge storage room 8 by the second screw conveyor 72, the storage dried sludge reaches a certain amount, and then is transmitted to the incinerator 9 for garbage incineration, and the medical sludge after incineration, sterilization and drying reaches the emission standard. The medical sludge treatment system improves the use efficiency of steam heat through closed circulation, has the effects of energy conservation and emission reduction, and can carry out heating and drying treatment on sludge in multiple stages, so that the sludge is convenient to collect and burn after drying, residual pathogenic microorganisms are thoroughly killed, and the purpose of discharging the sludge into the atmosphere after harmlessness is achieved.
The medical sludge collecting and treating system can rely on equipment such as an incinerator, a waste heat boiler and the like of the existing harmless treatment enterprise, the medical sludge is dried by using the generated waste heat, the dried medical sludge is used as an auxiliary fuel and is mixed with the raw material of the incinerator, the medical sludge is burnt at high temperature in the incinerator and can be thoroughly degraded into harmless ash, the ash can be used as an industrial raw material after being treated, and the waste gas generated during burning can reach the ultralow emission requirement through a complete tail gas treatment system of the harmless enterprise; the invention can be integrated with the resources of the existing harmless treatment enterprises, collects and then intensively treats the medical sludge, solves the problems of small amount, dispersion and high independent treatment cost of the medical sludge, finally generates a very small amount of ash, and thoroughly harmlessly treats waste water, waste gas and the like generated in the process.
Claims (10)
1. The utility model provides a medical sludge collection processing system for carry out innocent treatment to medical sludge, its characterized in that: the waste heat boiler is communicated with the incinerator and the dryer through pipelines respectively, heat of the incinerator is introduced into the dryer, and medical sludge is treated by the dryer, the dust removal device and the incinerator in sequence to obtain harmless ash.
2. The medical sludge collection and treatment system of claim 1, wherein: further comprises a disinfection room which is communicated with the dryer and is used for sterilizing and disinfecting the medical sludge.
3. The medical sludge collection and treatment system of claim 1, wherein: the dust removal device comprises a cyclone dust collector, a bag-type dust collector and a circulating fan, wherein the cyclone dust collector or the bag-type dust collector is communicated with the dryer and used for collecting medical sludge dried by the dryer, the bag-type dust collector is communicated with the circulating fan, and the circulating fan is communicated with the dryer.
4. The medical sludge collection and treatment system of claim 1, wherein: the waste heat boiler further comprises a condenser which is arranged between the dryer and the waste heat boiler through a pipeline.
5. The medical sludge collection and treatment system of claim 1, wherein: the sludge drying and sterilizing device further comprises a dry sludge storage room, a sludge bin, a first screw conveyor or a second screw conveyor, wherein the sludge bin is connected with the sterilizing room, the first screw conveyor is connected between the sludge bin and the drying machine, the second screw conveyor is communicated with the dust removal device and the incinerator, and the sludge storage room is arranged between the second screw conveyor and the incinerator.
6. The medical sludge collecting and treating method is characterized by comprising the following steps:
step 1, putting the collected wet medical sludge into a dryer for drying;
step 2, the dried sludge after passing through the dryer enters a dust removal device for collection;
step 3, putting the collected dried sludge into an incinerator for incineration;
and 4, heating the waste heat boiler by the incinerator, and sending the generated steam into a dryer for heating and drying.
7. The medical sludge collection and treatment method according to claim 6, wherein: further comprising step 11, the collected wet medical sludge is sterilized in a sterilization booth and then put into a dryer for drying.
8. The medical sludge collection and treatment method according to claim 6, wherein: further comprising: and step 21, introducing waste heat air in the dust removal device into an inlet of a dryer through a circulating fan, preheating wet medical sludge at the inlet, and sending the other part of the waste heat air into an incinerator to participate in incineration to generate harmless gas.
9. The medical sludge collection and treatment method according to claim 6, wherein: further comprising step 41, the exhaust steam generated after the dryer is heated by the steam is cooled in the condenser, and the obtained condensed water enters the waste heat boiler again for heating.
10. The medical sludge collection and treatment method according to claim 8, wherein: further comprising: and 22, adsorbing the incinerated harmless gas by using activated carbon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011174165.2A CN112142290A (en) | 2020-10-28 | 2020-10-28 | Medical sludge collecting and treating system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011174165.2A CN112142290A (en) | 2020-10-28 | 2020-10-28 | Medical sludge collecting and treating system and method |
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| Publication Number | Publication Date |
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| CN112142290A true CN112142290A (en) | 2020-12-29 |
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| CN202011174165.2A Pending CN112142290A (en) | 2020-10-28 | 2020-10-28 | Medical sludge collecting and treating system and method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990016706A (en) * | 1997-08-19 | 1999-03-15 | 조평환 | Incineration method of manure, food waste and device |
| CN1552646A (en) * | 2003-06-04 | 2004-12-08 | 清华同方股份有限公司 | Movable mud mummification treatment system |
| CN105502876A (en) * | 2015-11-25 | 2016-04-20 | 上海环境卫生工程设计院有限公司 | Utilization system of sludge indirect thermal anhydration tail gas and anhydration system thereof |
| CN111288463A (en) * | 2020-03-11 | 2020-06-16 | 东南大学 | Sludge drying and incinerating system and drying and incinerating method |
| CN213506537U (en) * | 2020-10-28 | 2021-06-22 | 广东生活环境无害化处理中心有限公司 | Medical treatment sludge collecting and processing system |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990016706A (en) * | 1997-08-19 | 1999-03-15 | 조평환 | Incineration method of manure, food waste and device |
| CN1552646A (en) * | 2003-06-04 | 2004-12-08 | 清华同方股份有限公司 | Movable mud mummification treatment system |
| CN105502876A (en) * | 2015-11-25 | 2016-04-20 | 上海环境卫生工程设计院有限公司 | Utilization system of sludge indirect thermal anhydration tail gas and anhydration system thereof |
| CN111288463A (en) * | 2020-03-11 | 2020-06-16 | 东南大学 | Sludge drying and incinerating system and drying and incinerating method |
| CN213506537U (en) * | 2020-10-28 | 2021-06-22 | 广东生活环境无害化处理中心有限公司 | Medical treatment sludge collecting and processing system |
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