1. A method for removing pungent smell in the organic contaminated soil excavation construction process is characterized by comprising the following steps:

(1) construction organization management: the method comprises the steps of personnel division, equipment arrival and material purchase, wherein the personnel division comprises the steps of determining the number of personnel, determining the working content of each person and determining the on duty time; the equipment on site comprises the steps of determining the type, the quantity, the position and the specific work content of the machine, and preparing the machine when the construction is advanced; the purchase of the material materials comprises the steps of determining the material types, the using positions and the quantity, and the purchase is completed before construction;

(2) the technical method comprises the following steps: the method comprises a general regional control method and a specific regional control method;

the general regional control method comprises the steps of controlling an excavation working face, covering while excavating, spraying odor inhibitor, carrying out closed excavation, and determining persons responsible for all links, wherein the control of the excavation working face is directed at a region with serious odor, and the excavation working face is controlled within a certain area each time; the step of covering while excavating refers to immediately covering after excavating the organic contaminated soil, so that the time of exposing the soil in the air is reduced, and the volatilization of organic matters is reduced; when peculiar smell occurs, an odor inhibitor is sprayed to reduce gas peculiar smell; in the excavation process, aiming at areas with large peculiar smell, an excavator excavates in the plastic closed greenhouse; according to the specific measures, the responsible persons of all links are determined during implementation;

the specific regional control method is mainly realized according to a movable sectional intelligent atomization spraying device, the device can quickly and specifically control the raised dust and pungent smell in the whole field or a specific region, and the device comprises a monitoring platform, an integrated detector in signal connection with the monitoring platform and a spraying system;

the spraying system comprises upright posts arranged on the foundation support at intervals, fog wall pipelines arranged at the top ends of the upright posts, a liquid supply pipe and a plurality of atomizing nozzles arranged on the fog wall pipelines at intervals, wherein one end of the liquid supply pipe is connected with the fog wall pipelines, the other end of the liquid supply pipe is respectively connected with a plurality of liquid storage boxes, each atomizing nozzle is provided with a first control valve, each liquid storage box is provided with a second control valve, the first control valve and the second control valve are connected with the monitoring platform, and the liquid storage boxes are used for containing clear water or solution containing an irritant odor inhibitor;

the specific area control method can control the raised dust and pungent smell generated in different areas or the whole field;

(3) emergency mechanism management: the method comprises the steps of formulating a management system, formulating an emergency response mechanism and disposing public sentiment, wherein the formulated management system is to dynamically monitor the site through portable monitoring equipment, guide site construction in time once abnormity is found, eliminate hidden pollution danger in time through means of adjusting a construction mode, strengthening pollution prevention and treatment measures and the like, and avoid pollution influence;

meanwhile, a smell management system is formulated by combining the actual conditions of the project, the prevention and control measures of the falling smell are more effective, different emergency measures are taken according to different degrees of smell, an emergency response mechanism is formulated, and countersigning is carried out on the emergency mechanism as much as possible; pre-judging the public opinion range, formulating a public opinion disposal method, determining a public opinion disposal flow, determining emergency personnel, and formulating an emergency mechanism aiming at the personnel.

2. The method for removing pungent odor of organic contaminated soil excavation construction process of claim 1, wherein the division of labor comprises: managers, fog bubble machine and spray wall operators, spray foam suppression, fog bubble vehicle drivers, HDPE film covering, transport vehicle tarpaulin covering, vehicle cleaning, road cleaning, water sprinkling dust settling and PID monitoring when the transport vehicle passes through a vehicle washing pool.

3. The method for removing pungent odor of organic contaminated soil excavation construction process of claim 1, wherein the apparatus comprises: excavator, transport vehicle, fog bubble machine, fog wall and large-scale blower.

4. The method for removing pungent odor of organic contaminated soil excavation according to claim 1, wherein the step (1) further comprises the main ways of preventing odor diffusion, reducing excavation working face, spraying odor inhibitor, covering in time, and using HDPE film and odor inhibitor as materials.

5. The method of claim 1, wherein the integrated detector comprises a dust sensor, a PID sensor and a positioning device.

6. The method of claim 5, wherein the dust sensor monitors a real-time concentration value of the dust in the air.

7. The method as claimed in claim 5, wherein the PID sensor is used for monitoring real-time concentration values of volatile organic compounds in air.

8. The method for removing the pungent odor in the organic contaminated soil excavation construction process of claim 1, wherein the positioning device is used for positioning the out-of-standard position and sending the coordinate value of the out-of-standard position to the monitoring platform.

9. The method for removing the pungent odor in the organic contaminated soil excavation construction process of claim 1, wherein the portable monitoring device is used for dynamically monitoring the site, and the monitoring points are arranged at sensitive areas around the original contaminated field area, the ex-situ remediation field area and the plant area.

10. The method for removing the pungent smell in the organic contaminated soil excavation construction process of claim 1, wherein the dynamic monitoring is that monitoring personnel can monitor the somatosensory grade of each monitoring point and a road along the way while monitoring every day, and if a sensitive area has peculiar smell, an emergency response mechanism is started in time.

Background

The soil of the polluted site of the pesticide factory contains a large amount of volatile organic pollutants, and the repairing modes mainly comprise an in-situ repairing mode and an ex-situ repairing mode; under the heterotopic restoration mode, the volatilization of organic pollutants in the soil is aggravated in the excavation of foundation pit, and most volatile organic pollutants have uncomfortable smell, and the smell has toxicity, irritability, teratogenicity and carcinogenicity, and the odor control management is the important bottleneck problem to project excavation construction management, and this problem directly influences the construction progress of project.

Aiming at the problems, the invention provides a method and a system for removing pungent odor in the organic contaminated soil excavation construction process, and the system summarizes odor management measures in the foundation pit excavation construction process from three aspects of construction organization management, technical method implementation and emergency mechanism management.

Disclosure of Invention

The invention mainly solves the technical problem of providing a method for removing pungent smell in the construction process of excavating organic polluted soil.

In order to solve the technical problems, the invention adopts a technical scheme that:

the method for removing the pungent smell in the organic contaminated soil excavation construction process comprises the following steps:

(1) construction organization management: the method comprises the steps of personnel division, equipment arrival and material purchase, wherein the personnel division comprises the steps of determining the number of personnel, determining the working content of each person and determining the on duty time; the equipment on site comprises the steps of determining the type, the quantity, the position and the specific work content of the machine, and preparing the machine when the construction is advanced; the purchase of the material materials comprises the steps of determining the material types, the using positions and the quantity, and the purchase is completed before construction;

(2) the technical method comprises the following steps: the method comprises a general regional control method and a specific regional control method;

the general regional control method comprises the steps of controlling an excavation working face, covering while excavating, spraying odor inhibitor, carrying out closed excavation, and determining persons responsible for all links, wherein the control of the excavation working face is directed at a region with serious odor, and the excavation working face is controlled within a certain area each time; the step of covering while excavating refers to immediately covering after excavating the organic contaminated soil, so that the time of exposing the soil in the air is reduced, and the volatilization of organic matters is reduced; when peculiar smell occurs, an odor inhibitor is sprayed to reduce gas peculiar smell; in the excavation process, aiming at areas with large peculiar smell, an excavator excavates in the plastic closed greenhouse; according to the specific measures, the responsible persons of all links are determined during implementation;

the specific regional control method is mainly realized according to a movable sectional intelligent atomization spraying device, the device can quickly and specifically control the raised dust and pungent smell in the whole field or a specific region, and the device comprises a monitoring platform, an integrated detector in signal connection with the monitoring platform and a spraying system;

the spraying system comprises upright posts arranged on the foundation support at intervals, fog wall pipelines arranged at the top ends of the upright posts, a liquid supply pipe and a plurality of atomizing nozzles arranged on the fog wall pipelines at intervals, wherein one end of the liquid supply pipe is connected with the fog wall pipelines, the other end of the liquid supply pipe is respectively connected with a plurality of liquid storage boxes, each atomizing nozzle is provided with a first control valve, each liquid storage box is provided with a second control valve, the first control valve and the second control valve are connected with the monitoring platform, and the liquid storage boxes are used for containing clear water or solution containing an irritant odor inhibitor;

the specific area control method can control the raised dust and pungent smell generated in different areas or the whole field;

(3) emergency mechanism management: the method comprises the steps of formulating a management system, formulating an emergency response mechanism and disposing public sentiment, wherein the formulated management system is to dynamically monitor the site through portable monitoring equipment, guide site construction in time once abnormity is found, eliminate hidden pollution danger in time through means of adjusting a construction mode, strengthening pollution prevention and treatment measures and the like, and avoid pollution influence;

meanwhile, a smell management system is formulated by combining the actual conditions of the project, the prevention and control measures of the falling smell are more effectively taken, different emergency measures are taken according to different degrees of smell, an emergency response mechanism is formulated, and countersigning is carried out on the emergency mechanism as much as possible.

In a preferred embodiment of the present invention, the division of labor comprises: managers, fog bubble machine and spray wall operators, spray foam suppression, fog bubble vehicle drivers, HDPE film covering, transport vehicle tarpaulin covering, vehicle cleaning, road cleaning, water sprinkling dust settling and PID monitoring when the transport vehicle passes through a vehicle washing pool.

In a preferred embodiment of the invention, the apparatus comprises: excavator, transport vehicle, fog bubble machine, fog wall and large-scale blower.

In a preferred embodiment of the present invention, the step (1) further comprises the main ways of preventing the diffusion of odor, such as reducing the excavation face, spraying odor inhibitor, and covering in time, and the used materials are HDPE film and odor inhibitor.

In a preferred embodiment of the invention, the integrated detector comprises a dust sensor, a PID sensor and a positioning device.

In a preferred embodiment of the present invention, the dust sensor monitors a real-time concentration value of the dust in the air.

In a preferred embodiment of the present invention, the PID sensor is used to monitor the real-time concentration value of the volatile organic compounds in the air.

In a preferred embodiment of the present invention, the positioning device is used for positioning the exceeding position and sending the coordinate value of the exceeding position to the monitoring platform.

In a preferred embodiment of the invention, the portable monitoring device dynamically monitors the site, and the monitoring points are arranged in sensitive areas around the original polluted site and the ex-situ remediation site and the plant area.

In a preferred embodiment of the present invention, the dynamic monitoring is that monitoring personnel monitor the somatosensory levels of each monitoring point and the road every day, and if a sensitive area has a peculiar smell, an emergency response mechanism is started in time.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:

FIG. 1 is a system flowchart of a preferred embodiment of the method for removing pungent odor during the excavation of organic contaminated soil according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, 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.

Referring to fig. 1, an embodiment of the present invention includes:

a method for removing pungent smell in the organic contaminated soil excavation construction process comprises the following steps:

(1) the division of labor force of personnel includes: managers, fog bubble machine and spray wall operators, spray foam suppression, fog bubble vehicle drivers, HDPE film covering, transport vehicle tarpaulin covering, vehicle cleaning when a transport vehicle passes through a vehicle washing pool, road cleaning, water sprinkling and dust settling, and PID monitoring.

The apparatus comprises: the large-scale air blower can be considered to be configured for standby when the odor of a residential area needs to be dredged in a short time in low-pressure windless weather. During excavation, the main ways of preventing odor diffusion are to reduce an excavation working surface, spray an odor inhibitor and cover in time, and the used materials are HDPE films and odor inhibitors.

(2) Controlling an excavation working surface, controlling the excavation working surface within 100m2 each time, and adopting a step-shaped excavation mode for the deep foundation pit while excavating and covering; 2 fog gun machines are respectively placed in the upper wind direction and the lower wind direction of an excavation working face to spray odor inhibitors in the excavation construction process, and meanwhile, a movable fog gun vehicle is arranged to inhibit odor in the field area and the periphery of the working face, so that odor diffusion is prevented.

In addition, a fog wall is arranged in the field, odor is sprayed at regular time to inhibit, and odor is prevented from diffusing out of the field; a closed excavation mode is adopted for blocks with serious pre-judged odor; according to the specific measures, the responsible persons of all links are determined during implementation.

(3) The movable sectional type intelligent atomization spraying system for dust fall and odor removal is started, a monitoring platform starts opening and closing of control valves on different atomization spray heads according to received dust fall real-time concentration numerical values, volatile organic matter real-time concentration numerical values and coordinate values of standard exceeding positions, the monitoring platform can start the atomization spray heads in standard exceeding areas according to information transmitted by an inductor in real time to realize sectional type and specific medicament spraying effects, the atomization spray heads can spray liquid in an atomization mode and uniformly suspend the liquid in air, the liquid is expanded into a liquid layer when being discharged through the atomization spray heads and flows through the edges of atomization spray head holes, a spraying effect is generated under the interaction force with gas in the air, dust spurts and pungent odors generated in different areas or the whole area can be controlled, and the movable sectional type intelligent atomization spraying system is not limited by field conditions during use; the intelligent monitoring platform is adopted to monitor the concentration of the dust and the pollutant in the construction site in real time, so that the timeliness of the detection of the dust and the pungent smell can be greatly improved; but atomizing spraying system sectional type, automatic start spraying system, the use amount of the pungent smell inhibitor that significantly reduces to the use cost that artifical discernment, fog gun machine, fog gun car, artifical cover etc. have been reduced, environmental protection construction cost is reduced.

(4) A portable organic gas detector (PID) is adopted to dynamically monitor the site, PID monitoring point positions are arranged at the periphery of an original polluted field area and an ex-situ remediation field area and sensitive areas at the periphery of a plant area, each monitoring point is monitored in three time periods of morning, noon and evening every day, a recording list is formed by monitoring every day, and a bulletin board in the field area and outside the field area is published and updated in time; monitoring the somatosensory levels of all monitoring points and roads along the way while carrying out PID monitoring every day by monitoring personnel, and starting an emergency response mechanism in time if peculiar smell appears in a sensitive area; and establishing a 3-level emergency response mechanism area by taking the construction area as a circle center and different distances as radiuses, and establishing a 3-level emergency response mechanism in the aspect of measures.

The method for removing the pungent smell in the organic contaminated soil excavation construction process has the beneficial effects that:

1. in the method, a method and a system for removing pungent odor in the excavation construction process of the organic contaminated soil are formed, a complete odor prevention and control method and a complete odor prevention and control system are formed through construction organization management, technical method implementation and emergency mechanism management measures, and the problems of secondary air pollution and construction period delay caused by odor volatilization in the excavation construction process are solved.

2. On the equipment, when meeting low pressure windless weather, when needing mediation residential area smell in the short time, fog gun machine and large-scale air-blower are opened to intelligence, reduce the system energy consumption, practice thrift the cost.

3. In the control timeliness, the atomizing and spraying system adopts an intelligent monitoring platform to carry out real-time monitoring on the dust raising and pollutant concentration of a construction site, and the timeliness of dust raising and pungent smell detection can be greatly improved.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.