CN110863621A - Construction method for reducing carbon emission in building reconstruction - Google Patents

The invention discloses a construction method for reducing carbon emission in building reconstruction, which comprises the following steps: step one, erecting a shed: building a shed in the construction environment, wherein the shed is formed by adopting a plastic film to seal the construction environment, and construction workers work in the shed; step two, paving asphalt: and (3) paving the prepared asphalt on the roof of the building, wherein the paving thickness is 1-5cm, and then, carrying out rolling treatment by adopting a rolling machine. The invention adopts the shed building treatment firstly, aims to ensure that the building is in a closed environment in the reconstruction process, thereby facilitating the gathering of the generated carbon dioxide, not closing, leading the generated carbon dioxide to directly enter the atmosphere and be difficult to recover and treat again, adopts the solution of sodium bicarbonate, calcium carbonate and deionized water to spray in the closed shed, thereby absorbing the carbon dioxide, leading the absorbed solution to fall on the protective film, preparing the protective film by adopting the fluororesin, aiming at having strong corrosion resistance and playing a role in protecting the asphalt.

Construction method for reducing carbon emission in building reconstruction

Technical Field

The invention relates to the technical field of building modification, in particular to a construction method for reducing carbon emission in building modification.

Background

The energy-saving transformation is energy-saving comprehensive transformation performed on energy consumption systems such as an enclosure structure, an air conditioner, heating, ventilation, illumination, power supply and distribution, hot water supply and the like in a building, the operation management level is improved by reconnaissance, diagnosis and optimization design of each energy consumption system, high-new energy-saving technology and products are applied, the energy utilization rate of the building is improved by using renewable energy sources and other ways, the energy waste is reduced, and the energy consumption cost are reduced on the premise of not reducing the service quality of the system. Since the global warming problem is becoming more serious due to the large development of the greenhouse gas emission of the industry by human beings, the global temperature is rising continuously enough to influence the survival key of global species, and therefore, how to reduce the emission of the greenhouse gas is a common global target. Various solutions to reduce carbon dioxide emissions have been developed.

The construction method can be applied to asphalt for waterproofing in building modification, asphalt can be paved and rolled in waterproofing, machines can generate large energy consumption and discharge a large amount of carbon dioxide in paving and rolling, and the construction technology for reducing carbon emission in the prior art is not mature, so that improvement treatment is needed.

Disclosure of Invention

The invention aims to provide a construction method for reducing carbon emission in building reconstruction, which aims to solve the problems in the background technology.

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

a construction method for reducing carbon emission in building reconstruction comprises the following steps:

step one, erecting a shed: building a shed in the construction environment, wherein the shed is formed by adopting a plastic film to seal the construction environment, and construction workers work in the shed;

step two, paving asphalt: spreading the prepared asphalt on the roof of a building with the spreading thickness of 1-5cm, and then carrying out rolling treatment by using a rolling machine with the rolling pressure of 10-20 MPa;

step three, pretreatment of carbon dioxide absorption: after the rolled asphalt is dried and does not have viscosity, a layer of protective film is laid on the asphalt, and the protective film is compacted;

step four, primary treatment: spraying aqueous solution of sodium bicarbonate, calcium carbonate and deionized water according to the weight ratio of 3 (4-6) to 6-9, wherein the spraying speed is 0.1-2 g/s;

step five, post-treatment: collecting and stacking the protective films, washing, placing microalgae in a closed environment with a shed for photolysis for 5-10 days, and finally collecting the protective films.

Preferably, the plastic film is a plastic film obtained by feeding the phenolic novolac resin, the silicon dioxide and the activated carbon into a double-screw extruder for extrusion according to the weight ratio of (6-9): 1-3): 1.

Preferably, the phenolic novolac resin, the silicon dioxide and the activated carbon are mixed according to the weight ratio of 7:2: 1.

Preferably, the protective film is prepared using a fluororesin.

Preferably, the first treatment in the fourth step adopts gamma ray combined with plasma irradiation treatment.

Preferably, the specific steps of the gamma ray combined plasma irradiation treatment are as follows: firstly adopting gamma ray irradiation for 2-5min, wherein the irradiation power is 100-.

Preferably, the gamma ray irradiation is performed for 3.5min with the irradiation power of 150W, and then the plasma irradiation is performed for 4.5min with the irradiation power of 230W, and the treatment is performed alternately for 20min in total.

Preferably, simulated natural light irradiation is adopted in the photolysis treatment of the microalgae, the wavelength of the light irradiation is 200-1000nm, and the irradiation intensity is 510-550 lux.

Compared with the prior art, the invention has the following beneficial effects:

(1) the invention adopts the shed building treatment firstly, aims to ensure that the building is in a closed environment in the reconstruction process, thereby facilitating the gathering of the generated carbon dioxide, not closing, leading the generated carbon dioxide to directly enter the atmosphere and be difficult to recover and treat again, adopts the solution of sodium bicarbonate, calcium carbonate and deionized water to spray in the closed shed, thereby absorbing the carbon dioxide, leading the absorbed solution to fall on the protective film, preparing the protective film by adopting the fluororesin, aiming at having strong corrosion resistance and playing a role in protecting the asphalt.

(2) The plastic film is prepared from linear phenolic resin, silicon dioxide and activated carbon, can play a part of absorption effect on carbon dioxide in the shed, and in addition, the added microalgae is subjected to photolysis treatment to further degrade the carbon dioxide, so that the carbon emission effect is reduced to a great extent; the gamma ray and plasma irradiation treatment can activate the reaction of carbon dioxide and the aqueous solution, thereby further improving the carbon treatment effect.

(3) The carbon dioxide concentration in example 3 of the present invention was 11.4%, while the carbon dioxide concentration in comparative example 1 was 32.3%, and the carbon dioxide concentration in example 3 was 20.9% lower than that in comparative example 1, indicating that the present invention can effectively reduce carbon emission.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to specific embodiments, 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.

Example 1:

the construction method for reducing carbon emission in building reconstruction of the embodiment comprises the following steps:

step one, erecting a shed: building a shed in the construction environment, wherein the shed is formed by adopting a plastic film to seal the construction environment, and construction workers work in the shed;

step two, paving asphalt: paving the prepared asphalt on the roof of a building with the paving thickness of 1cm, and then performing rolling treatment by using a rolling machine with the rolling pressure of 10 MPa;

step three, pretreatment of carbon dioxide absorption: after the rolled asphalt is dried and does not have viscosity, a layer of protective film is laid on the asphalt, and the protective film is compacted;

step four, primary treatment: spraying aqueous solution of sodium bicarbonate, calcium carbonate and deionized water according to the weight ratio of 3:5:7, wherein the spraying speed is 0.15 g/s;

step five, post-treatment: collecting and stacking the protective films orderly, then washing, then placing microalgae in a closed environment with a shed for photolysis treatment for 7.5 days, and finally collecting the shed.

The plastic film of the present example was a plastic film obtained by feeding a phenol novolac resin, silica, and activated carbon at a weight ratio of 6:1:1 into a twin-screw extruder and extruding the mixture.

The protective film of the present example was prepared using a fluororesin.

The first-order treatment in the fourth step of this example employs a combination of gamma ray and plasma irradiation.

The specific steps of the gamma ray combined plasma irradiation treatment of the embodiment are as follows: firstly adopting gamma rays to irradiate for 2min with the irradiation power of 100W, then adopting plasma to irradiate for 3-6min with the irradiation power of 220W, and alternately carrying out treatment for 15min in total.

The microalgae in this embodiment is irradiated by simulated natural light in the photolysis process, the wavelength of the light irradiation is 200nm, and the irradiation intensity is 510 lux.

Example 2:

the construction method for reducing carbon emission in building reconstruction of the embodiment comprises the following steps:

step one, erecting a shed: building a shed in the construction environment, wherein the shed is formed by adopting a plastic film to seal the construction environment, and construction workers work in the shed;

step two, paving asphalt: spreading the prepared asphalt on the roof of a building with the spreading thickness of 1-5cm, and then carrying out rolling treatment by using a rolling machine with the rolling pressure of 20 MPa;

step three, pretreatment of carbon dioxide absorption: after the rolled asphalt is dried and does not have viscosity, a layer of protective film is laid on the asphalt, and the protective film is compacted;

step four, primary treatment: spraying aqueous solution of sodium bicarbonate, calcium carbonate and deionized water according to the weight ratio of 3:6:9, wherein the spraying speed is 2 g/s;

step five, post-treatment: collecting and stacking the protective films orderly, then washing, then placing microalgae in a closed environment with a shed for photolysis treatment for 10 days, and finally collecting the shed.

The plastic film of the present example was a plastic film obtained by feeding a phenol novolac resin, silica, and activated carbon in a weight ratio of 9:3:1 into a twin-screw extruder and extruding the mixture.

The protective film of the present example was prepared using a fluororesin.

The first-order treatment in the fourth step of this example employs a combination of gamma ray and plasma irradiation.

The specific steps of the gamma ray combined plasma irradiation treatment of the embodiment are as follows: firstly adopting gamma rays to irradiate for 5min with the irradiation power of 200W, then adopting plasma to irradiate for 6min with the irradiation power of 250W, and alternately carrying out treatment for 25min in total.

In the embodiment, the gamma ray irradiation is performed for 3.5min, the irradiation power is 150W, then the plasma irradiation is performed for 4.5min, the irradiation power is 230W, and the treatment is performed for 20min in total alternately.

The microalgae in this embodiment is irradiated by simulated natural light in the photolysis process, the wavelength of the light irradiation is 1000nm, and the irradiation intensity is 550 lux.

Example 3:

the construction method for reducing carbon emission in building reconstruction of the embodiment comprises the following steps:

step one, erecting a shed: building a shed in the construction environment, wherein the shed is formed by adopting a plastic film to seal the construction environment, and construction workers work in the shed;

step two, paving asphalt: spreading the prepared asphalt on the roof of a building, wherein the spreading thickness is 1-5cm, and then performing rolling treatment by using a rolling machine, wherein the rolling pressure is 15 MPa;

step three, pretreatment of carbon dioxide absorption: after the rolled asphalt is dried and does not have viscosity, a layer of protective film is laid on the asphalt, and the protective film is compacted;

step four, primary treatment: spraying aqueous solution of sodium bicarbonate, calcium carbonate and deionized water according to the weight ratio of 3:5:7.5, wherein the spraying speed is 1.1 g/s;

step five, post-treatment: collecting and stacking the protective films orderly, then washing, then placing microalgae in a closed environment with a shed for photolysis treatment for 7.5 days, and finally collecting the shed.

The plastic film of the present example was a plastic film obtained by feeding a phenol novolac resin, silica, and activated carbon at a weight ratio of 7.5:2:1 into a twin-screw extruder and extruding the mixture.

The protective film of the present example was prepared using a fluororesin.

The first-order treatment in the fourth step of this example employs a combination of gamma ray and plasma irradiation.

In the embodiment, the gamma ray irradiation is performed for 3.5min, the irradiation power is 150W, then the plasma irradiation is performed for 4.5min, the irradiation power is 230W, and the treatment is performed for 20min in total alternately.

The microalgae in this embodiment is irradiated by simulated natural light in photolysis, the wavelength of the light irradiation is 600nm, and the irradiation intensity is 530 lux.

Comparative example 1.

The materials and preparation process were substantially the same as those of example 3, except that the carbon dioxide obtained was not measured by the method of the present invention.

The results of the performance tests of examples 1 to 3 and comparative example 1 are as follows

From examples 1 to 3 and comparative example 1, it is understood that the carbon dioxide concentration in example 3 of the present invention is 11.4%, while the carbon dioxide concentration in comparative example 1 is 32.3%, and the carbon dioxide concentration in example 3 is 20.9% lower than that in comparative example 1, and thus the present invention is effective in reducing carbon emissions.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.