1. The utility model provides a medical sludge innocent treatment equipment which characterized in that includes:

the heating device (1) is used for introducing medical sludge into the heating device (1) so as to heat the medical sludge to a reaction temperature;

the oxidation reactor (3) is connected with the heating device (1), and an oxidant is added into the oxidation reactor (3);

a gas-liquid separator (4) connected to the oxidation reactor (3) for separating a gas-liquid mixture from a liquid mixture in the treated medical sludge;

and the electrostatic demister (5) is connected with the gas-liquid separator (4) and is used for treating the gas generated by separation.

2. The apparatus for the innocent treatment of medical sludge according to claim 1, wherein the heating device (1) comprises:

a preheater (11), said preheater (11) being connected to the outlet of said oxidation reactor (3) for heat exchange between said medical sludge added and said medical sludge after treatment;

a heater (12), wherein the heater (12) is connected with the preheater (11) and the inlet of the oxidation reactor (3).

3. The medical sludge innocent treatment equipment according to claim 2, wherein the heater (12) comprises a heat pump system evaporator (121), a compressor (122) and a heat pump system condenser (123) which are sequentially connected end to end, a heat pump working medium is arranged in the heat pump system evaporator (121), the heat pump system evaporator (121) is connected with a medical waste hot water pipeline (100), and the heat pump system condenser (123) is connected with the preheater (11) and the inlets of the oxidation reactor (3).

4. The apparatus for harmless treatment of medical sludge according to claim 3, wherein the heater (12) further comprises a throttle valve (124), the throttle valve (124) being provided on a connection line between the heat pump system condenser (123) and the heat pump system evaporator (121).

5. The medical sludge innocent treatment apparatus according to claim 2, further comprising a transfer pump (2), wherein the transfer pump (2) is connected to the preheater (11) to pump the medical sludge into the preheater (11).

6. The medical sludge innocent treatment apparatus according to claim 2, wherein the preheater (11) is connected to the gas-liquid separator (4), and a regulating valve (41) is provided on a connecting pipe between the preheater (11) and the gas-liquid separator (4).

7. The medical sludge innocent treatment apparatus according to claim 1, wherein the oxidation reactor (3) comprises:

the primary oxidation reactor (31) is connected with the heating device (1), and compressed air is introduced into the primary oxidation reactor (31);

and the secondary oxidation reactor (32) is connected with the primary oxidation reactor (31), the oxidant is introduced into the secondary oxidation reactor (32), and an outlet of the secondary oxidation reactor (32) is connected with the heating device (1).

8. The equipment for harmless treatment of medical sludge according to claim 7, wherein stirrers (33) are provided in both the primary oxidation reactor (31) and the secondary oxidation reactor (32).

9. The medical sludge innocent treatment apparatus according to claim 7, wherein the oxidizing agent is hydrogen peroxide or ozone.

10. A method for innocent treatment of medical sludge, characterized in that the equipment for innocent treatment of medical sludge according to any claim 1-9 is used, and the method comprises the following steps:

s1, introducing the medical sludge into a preheater (11) and heating to 115-120 ℃;

s2, introducing compressed air into the medical sludge, inputting the medical sludge into a heater (12), and heating the medical sludge to 130-140 ℃ in the heater (12);

s3, inputting the heated medical sludge into a primary oxidation reactor (31) for oxidation;

s4, inputting the medical sludge after the primary reaction into a secondary oxidation reactor (32) and introducing an oxidant for oxidation;

s5, inputting the medical sludge treated by the secondary oxidation reactor (32) into the preheater (11) to heat the newly-entered medical sludge;

s6, inputting a gas-liquid mixture generated by the medical sludge treated in the preheater (11) into a gas-liquid separator (4);

and S7, inputting the gas separated in the gas-liquid separator (4) into an electrostatic demister (5), and discharging the gas after the gas is treated by the electrostatic demister (5) and reaches the standard.

Background

A certain amount of medical sludge (a mixture of 97% moisture and 3% medical sludge) is generated in the treatment process of hospital wastewater, and the medical sludge has extremely high pollution, must be treated as hazardous waste and has extremely high treatment cost.

Medical sludge contains a large amount of organic matters, the decrement space is large, and the main treatment modes at present comprise three modes of dosing treatment, microbial treatment and incineration treatment. But high salt, high chlorine and antibiotics have obvious inhibition effect on microorganisms, and the direct microbial treatment effect is not good; the conventional dosing treatment not only consumes a large amount of medicament, but also is easy to generate secondary pollution; and a large amount of pollutants such as dioxin and the like are generated in the combustion treatment, the treatment cost is high, and the environmental influence is large.

Based on this, there is a need for a harmless treatment apparatus and method for medical sludge, which can solve the above-mentioned problems.

Disclosure of Invention

The invention aims to provide equipment and a method for harmless treatment of medical sludge, which can perform high-temperature disinfection and oxidation treatment simultaneously, effectively kill pathogens, do not generate secondary pollution, do not generate harmful gases such as dioxin and the like, and have good environmental protection property.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a harmless treatment device for medical sludge, which comprises:

the heating device is internally filled with medical sludge so as to heat the medical sludge to the reaction temperature;

the oxidation reactor is connected with the heating device, and an oxidant is added into the oxidation reactor;

the gas-liquid separator is connected with the oxidation reactor to perform gas-liquid separation on a gas-liquid mixture in the treated medical sludge;

and the electrostatic demister is connected with the gas-liquid separator and is used for treating the gas generated by separation.

Optionally, the heating device comprises:

a preheater connected to an outlet of the oxidation reactor to exchange heat between the added medical sludge and the treated medical sludge;

and the heater is connected with the preheater and the inlet of the oxidation reactor.

Optionally, the heater comprises a heat pump system evaporator, a compressor and a heat pump system condenser which are sequentially connected end to end, a heat pump working medium is arranged in the heat pump system evaporator, the heat pump system evaporator is connected with a medical waste hot water pipeline, and the heat pump system condenser is connected with the preheater and the inlet of the oxidation reactor.

Optionally, the heater further comprises a throttle valve, and the throttle valve is arranged on a connecting pipeline between the condenser of the heat pump system and the evaporator of the heat pump system.

Optionally, the medical sludge innocent treatment equipment further comprises a delivery pump, and the delivery pump is connected with the preheater to pump the medical sludge into the preheater.

Optionally, the preheater is connected with the gas-liquid separator, and a regulating valve is arranged on a connecting pipeline between the preheater and the gas-liquid separator.

Optionally, the oxidation reactor comprises:

the primary oxidation reactor is connected with the heating device, and compressed air is introduced into the primary oxidation reactor;

and the secondary oxidation reactor is connected with the primary oxidation reactor, the oxidant is introduced into the secondary oxidation reactor, and an outlet of the secondary oxidation reactor is connected with the heating device.

Optionally, a stirrer is arranged in each of the primary oxidation reactor and the secondary oxidation reactor.

Optionally, the oxidizing agent is hydrogen peroxide or ozone.

The invention also provides a harmless treatment method for medical sludge, which adopts the harmless treatment equipment for medical sludge, and the harmless treatment method for medical sludge comprises the following steps:

s1, introducing the medical sludge into a preheater and heating to 115-120 ℃;

s2, introducing compressed air into the medical sludge, inputting the medical sludge into a heater, and heating the medical sludge to 130-140 ℃ in the heater;

s3, inputting the heated medical sludge into a primary oxidation reactor for oxidation;

s4, inputting the medical sludge after the primary reaction into a secondary oxidation reactor, and introducing an oxidant for oxidation;

s5, inputting the medical sludge treated by the secondary oxidation reactor into the preheater to heat the newly-entered medical sludge;

s6, inputting a gas-liquid mixture generated by the medical sludge treated in the preheater into a gas-liquid separator;

and S7, inputting the gas separated in the gas-liquid separator into an electrostatic demister, and discharging the gas after the gas is treated by the electrostatic demister and reaches the standard.

The invention has the beneficial effects that:

the invention provides equipment and a method for harmless treatment of medical sludge, which are characterized in that the medical sludge is firstly input into a heating device to be heated to the reaction temperature, then the heated medical sludge is input into an oxidation reactor and an oxidant is added into the oxidation reactor, so that the oxidation of organic matters in the medical sludge is realized, the harmfulness of the medical sludge is reduced, the generated gas-liquid mixture is further subjected to gas-liquid separation through a gas-liquid separator, and the separated gas is treated by an electrostatic demister, so that the harm to the environment is reduced, and the environmental protection is improved.

Overall, the present invention has the following advantages: 1. the medical sludge sterilization and oxidation treatment can be carried out at the same time, organic matters such as antibiotics and the like in the medical sludge can be effectively degraded, the organic matters are reduced by more than 90%, and pathogens are effectively killed; 2. almost no chemical treatment is needed, and no secondary pollution is caused; 3. can oxidize and fix the heavy metal; 4. the whole oxidation reaction is carried out in a liquid state, and harmful gases such as dioxin and the like are not generated.

Drawings

FIG. 1 is a schematic view of the overall structure of a harmless treatment device for medical sludge according to an embodiment of the present invention.

In the figure:

100. a medical waste hot water line;

1. a heating device; 11. a preheater; 12. a heater; 121. a heat pump system evaporator; 122. a compressor; 123. a heat pump system condenser; 124. a throttle valve;

2. a delivery pump;

3. an oxidation reactor; 31. a primary oxidation reactor; 32. a secondary oxidation reactor; 33. a stirrer;

4. a gas-liquid separator; 41. adjusting a valve;

5. an electrostatic demister.

Detailed Description

In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

The embodiment of the invention discloses a medical sludge innocent treatment device, which comprises a heating device 1, an oxidation reactor 3, a gas-liquid separator 4 and an electrostatic demister 5 as shown in figure 1. Wherein, the medical sludge is introduced into the heating device 1 to heat the medical sludge to the reaction temperature. The oxidation reactor 3 is connected with the heating device 1, and the oxidation reactor 3 is added with an oxidant. The gas-liquid separator 4 is connected to the oxidation reactor 3 to perform gas-liquid separation of a gas-liquid mixture in the treated medical sludge. The electrostatic demister 5 is connected to the gas-liquid separator 4 to treat the gas generated by the separation.

In the actual working process, the medical sludge is firstly input into the heating device 1 to be heated to the reaction temperature, then the heated medical sludge is input into the oxidation reactor 3, and the oxidant is added into the oxidation reactor, so that the oxidation of organic matters in the medical sludge is realized, the harmfulness of the medical sludge is reduced, the gas-liquid mixture generated is further subjected to gas-liquid separation through the gas-liquid separator 4, the separated gas is treated by the electrostatic demister 5, the harm to the environment is reduced, and the environmental protection is improved.

Overall, the present invention has the following advantages: the medical sludge sterilization and oxidation treatment can be carried out at the same time, organic matters such as antibiotics and the like in the medical sludge can be effectively degraded, the organic matters are reduced by more than 90%, and pathogens are effectively killed; almost no chemical treatment is needed, and no secondary pollution is caused; can oxidize and fix the heavy metal; the whole oxidation reaction is carried out in a liquid state, and harmful gases such as dioxin and the like are not generated.

It should be noted that, the water content of the medical sludge in this embodiment is 97%, which can ensure that the entire reaction is performed in a liquid environment, so as to avoid the generation of harmful gases such as dioxin, and the environment friendliness is good. Of course, in other embodiments, the harmless treatment can be performed on the medical sludge with the water content of 50% -97%, and the embodiment is not limited.

Alternatively, the heating apparatus 1 includes a preheater 11 and a heater 12, and the preheater 11 and the heater 12 are connected. Wherein, the preheater 11 is connected with the outlet of the oxidation reactor to carry out heat exchange on the added medical sludge and the treated medical sludge, so as to recycle the preheating in the treated medical sludge, improve the energy utilization rate and reduce the electric energy consumption. The heater 12 is connected with the preheater 11 and the inlet of the oxidation reactor 3 to further heat the preheated medical sludge to the temperature required by the oxidation reaction. It should be noted that the temperature of the medical sludge preheated by the preheater 11 reaches 115 ℃ to 120 ℃, and the temperature of the heated medical sludge reaches 130 ℃ to meet the requirement of reaction temperature. In other embodiments, the heating temperature may be adjusted as needed, and is not limited to this embodiment.

The preheater 11 is connected with the gas-liquid separator 4, and the adjusting valve 41 is arranged on a connecting pipeline between the preheater 11 and the gas-liquid separator 4, so that the flow of the gas-liquid mixture entering the gas-liquid separator 4 is adjusted, and different use working conditions are met.

Further, the heater 12 comprises a heat pump system evaporator 121, a compressor 122 and a heat pump system condenser 123 which are sequentially connected end to end, wherein a heat pump working medium is arranged in the heat pump system evaporator 121, the heat pump system evaporator 121 is connected with the medical waste hot water pipeline 100, and the heat pump system condenser 123 is connected with the preheater 11 and the inlet of the oxidation reactor 3. According to the arrangement, the heat pump working medium extracts heat from waste hot water at 30-50 ℃ in a medical waste hot water pipeline 100 of a hospital through the heat pump system evaporator 121, the obtained heat pump working medium is compressed by the compressor 122 and then enters the heat pump system condenser 123 to release heat, so that preheated medical sludge is heated to 130 ℃ from 115-120 ℃, and the heat pump working medium releases heat and then flows back to the heat pump system evaporator 121 to absorb heat to circulate in a reciprocating manner. In a whole, the COP of the high-temperature heat pump technology can reach 2.5-3, so that compared with the traditional electric heating mode, the high-temperature heat pump technology can save electricity by more than 60%, and greatly reduce energy consumption.

In order to further reduce the energy consumption, the heater 12 further includes a throttle valve 124, and the throttle valve 124 is disposed on a connection pipeline between the heat pump system condenser 123 and the heat pump system evaporator 121. The heat pump working medium flowing out of the condenser 123 of the self-heating pump system is decompressed by the throttle valve 124 and then enters the evaporator 121 of the heat pump system to control the flow rate of the medical sludge and the pressure in the whole reactor, and the energy consumption is reduced.

Furthermore, the medical sludge innocent treatment equipment also comprises a delivery pump 2, and the delivery pump 2 is connected with the preheater 11 so as to pump the medical sludge into the preheater 11 to realize power transmission.

As a preferable technical solution of the medical sludge innocent treatment apparatus of the embodiment, the oxidation reactor 3 includes a primary oxidation reactor 31 and a secondary oxidation reactor 32, wherein the primary oxidation reactor 31 is connected with the heating device 1, and compressed air is introduced into the primary oxidation reactor 31; the secondary oxidation reactor 32 is connected with the primary oxidation reactor 31, an oxidant is introduced into the secondary oxidation reactor 32, and the outlet of the secondary oxidation reactor 32 is connected with the heating device 1. According to the arrangement, the heated medical sludge enters the primary oxidation reactor 31 to perform primary reaction with the compressed air, and the reacted medical sludge enters the secondary oxidation reactor 32 to perform secondary oxidation under the action of the oxidant, so that the reaction is more sufficient, meanwhile, the use cost of the oxidant is saved, and the economy is good.

In this embodiment, the pipeline carrying compressed air is connected to the pipeline between the preheater 11 and the heat pump system condenser 123, and the medical sludge preheated by the preheater 11 is mixed with the compressed air and then sent to the heat pump system condenser 123 for heating, and then sent to the primary oxidation reactor 31 for reaction, so as to achieve sufficient mixing and reaction of the compressed air and the medical sludge. Of course, in other embodiments, the compressed air may be introduced into the pipeline between the pump system condenser 123 and the primary oxidation reactor 31 or directly introduced into the primary oxidation reactor 31, which is not limited to this embodiment.

In addition, in this embodiment, the pipeline carrying the oxidant is connected to the pipeline between the primary oxidation reactor 31 and the secondary oxidation reactor 32, so that the mixed oxidant of the medical sludge flowing out after the reaction in the primary oxidation reactor 31 flows into the secondary oxidation reactor 32 to realize the secondary reaction. In other embodiments, the oxidant may be introduced directly into the secondary oxidation reactor 32.

In this example, the oxidizing agent is hydrogen peroxide, which has strong oxidizing properties. Of course, in other embodiments, the oxidant may be ozone or other strong oxidizing substances.

In order to further improve the reaction effect and make the reaction more sufficient, stirrers 33 are arranged in the primary oxidation reactor 31 and the secondary oxidation reactor 32.

Gas-liquid separator 4 is used for carrying out gas-liquid separation to the gas-liquid mixture that medical sludge produced in preheater 11, and liquid direct discharge gets into next processing procedure, and gaseous then flows into and carries out electrostatic precipitator in the electrostatic precipitator 5, realizes cleaning once more, treats that gaseous rear up to standard can arrange to the external world, reduces the harm to the environment. Since the structures of the gas-liquid separator 4 and the electrostatic demister 5 are prior art, they will not be described in detail.

Further, the bottom of the electrostatic demister 5 is connected with the liquid collecting part of the gas-liquid separator 4, so that liquid generated by the electrostatic demister 5 flows back into the gas-liquid separator 4 and is then discharged to the next process, and the pipeline integration is improved.

The embodiment also discloses a harmless treatment method of medical sludge, which adopts the harmless treatment equipment of medical sludge as in any one of claims 1 to 9, can simultaneously carry out high-temperature disinfection and oxidation treatment, effectively kill pathogens, does not produce secondary pollution, does not produce harmful gases such as dioxin and the like, and has good environmental protection property.

Optionally, the harmless treatment method for medical sludge comprises the following steps:

s1, introducing the medical sludge into a preheater 11 and heating to 115-120 ℃;

s2, introducing compressed air into the medical sludge, inputting the medical sludge into a heater 12, and heating the medical sludge to 130-140 ℃ in the heater 12;

s3, inputting the heated medical sludge into a primary oxidation reactor 31 for oxidation;

s4, inputting the medical sludge after the primary reaction into a secondary oxidation reactor 32 and introducing an oxidant for oxidation;

s5, inputting the medical sludge treated by the secondary oxidation reactor 32 into a preheater 11 to heat newly-entered medical sludge;

s6, inputting a gas-liquid mixture generated by the medical sludge treated in the preheater 11 into a gas-liquid separator 4;

and S7, inputting the gas separated in the gas-liquid separator 4 into the electrostatic demister 5, and discharging the gas after the gas is treated by the electrostatic demister 5 and reaches the standard.

By the treatment method, the medical sludge can be subjected to high-temperature disinfection and oxidation treatment at the same time, pathogens can be effectively killed, and organic matters are reduced by more than 90%; almost no chemical treatment is needed, and no secondary pollution is caused; the whole oxidation reaction is carried out in a liquid state, harmful gases such as dioxin and the like are not generated, and the environment friendliness is good.

In summary, the invention provides a harmless treatment device and method for medical sludge, which comprises the steps of firstly feeding the medical sludge into a heating device 1 to be heated to a reaction temperature, then feeding the heated medical sludge into an oxidation reactor, and adding an oxidant into the oxidation reactor, thereby realizing the oxidation of organic matters in the medical sludge, reducing the harmfulness of the medical sludge, further carrying out gas-liquid separation on the generated gas-liquid mixture through a gas-liquid separator 4, realizing the treatment of separated gas through an electrostatic demister 5, reducing the harm to the environment and improving the environmental protection.

Overall, the present invention has the following advantages:

1. the medical sludge sterilization and oxidation treatment can be carried out at the same time, organic matters such as antibiotics and the like in the medical sludge can be effectively degraded, the organic matters are reduced by more than 90%, and pathogens are effectively killed;

2. almost no chemical treatment is needed, and no secondary pollution is caused;

3. can oxidize and fix the heavy metal;

4. the whole oxidation reaction is carried out in a liquid state, and harmful gases such as dioxin and the like are not generated.

It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.