Patent Application
20160041141
This application claims the priority of Taiwanese patent application No. 103126785, filed on Aug. 5, 2014, which is incorporated herewith by reference.
1. Field of the Invention
The present invention relates generally to an environment risk sorting method, and more particularly an environment risk sorting method for controlling abandoned plants which cause high environmental pollution.
2. The Prior Arts
Industrial pollution is one major cause for underground water pollution, since wastes or pollutants are directly or indirectly discharged into the ground without adequate treatment to remove harmful compounds. Some abandoned plants cause high environment risk to the ground upon which the plants are built prior to shutdown or abandonment. The currently running plants need more attention since they constantly generate environment risk if no proper environment safety measurement is taken during the running period, and the land left by those abandoned plants may be contaminated. So that an environment risk sorting method is required to effectively sorting each of the abandoned plants as the basis for follow-up investigation for controlling the abandoned plants.
A conventional method of sorting abandoned plants causing high environment risk includes fetching the recorded basic information stored within an abandoned plant and evaluating the basic information so as to generate a risk evaluation result for each abandoned plant, which in turn, produces an environment site evaluation list. Since the environment site evaluation list includes names of abandoned plants and location sites, it is taken as the basis for follow-up investigation and management of the location sites. It is noted the earlier basic information of the abandoned plants are recorded not in properly arranged system or lacking such as environment risk level and hence will not be a perfect one owing to exclusion of the recent environment site evaluation information. The environment risk level of each abandoned plant is defined by the recorded information of the respective abandoned plant, thereby causing difficulty in obtaining the on-spot environment risk evaluation of the abandoned plant.
Therefore, the conventional method of environment risk sorting cannot handle a tremendously large amount of record information and incomplete information leads to waste of human labor, time, and cost, hence the management of material, needs to be upgraded urgently.
The object of the present invention is to provide an environment risk sorting method that can eliminate the above-mentioned drawbacks resulted from the use of the conventional environment risk sorting method and that can update a plant environment database so as generate on-spot data of each abandoned plant, thereby obtaining an environment risk evaluation result substantially similar to the present condition so as to facilitate the follow-up management and investigation.
An environment risk sorting method of the present invention for controlling abandoned plants which cause high environmental pollution, includes: a preliminary step: preparing a plant environment database for storing several pieces of environment risk data for each abandoned plant, wherein the environment risk data includes pollution potential factor data and environment factor data; a first risk evaluation step: using a first risk evaluation module, based on the several pieces of environment risk data, to generate a first risk evaluation result for each abandoned plant, wherein the first risk evaluation result includes a first risk evaluation value (T1); and a first risk level defined based on the first risk evaluation value (T1); an environmental site evaluation step: using the first risk evaluation result to generate an environmental site evaluation list, which in turn, generates an environment site evaluation data of each abandoned plant and updated environmental risk data; a second risk evaluation step: using a second risk evaluation module, based on the environment site evaluation data of each abandoned plant and the updated environmental risk data, to generate a second risk evaluation result for each abandoned plant, wherein the second risk evaluation result includes a second risk evaluation value (T2) and a second risk level defined based on the second risk evaluation value (T2); and a risk managing step: using the second risk evaluation result for each abandoned plant to generate an investigation list as a basis for follow-up investigation.
Preferably, the preliminary step further includes a conditional sorting procedure that consists of plant site area of the environment risk data, plant location and storeys of each abandoned plant, and classification of abandoned plants into different groups based on usage change of each abandoned plant.
Preferably, in one embodiment of the present invention, the first risk evaluation value (T1) is equivalent to a total sum of a first underground water environment risk factor (Sgw,1) and a first soil environment risk factor (Ssoil, 1) and is multiplied by a weighting factor F. The first underground water environment risk factor (Sgw, 1) is computed from root mean square (RMS) of a first underground water pollution factor (Pgw, 1), an underground environmental vulnerability factor (Cgw) and an underground water pollution receptor factor (Dgw), wherein, the first underground water pollution factor (Pgw, 1) is computed from accumulated value of the environment risk data. The first soil environment risk factor (Ssoil,1 1) is computed from root mean square (RMS) of a first soil pollution potential factor (Psoil, 1), a soil environmental vulnerability factor (Csoil) and a soil pollution receptor factor (Dsoil), wherein, the first soil pollution potential factor (Psoil, 1) is computed from accumulated value of the environment risk data.
Preferably, the environment risk data includes a pollution potential factor (P), which consists of the following factors: registered plant site area (A1), plant year of running (A2), former record for atmosphere, water, waste and poisonous substances (A3), number of owner transfer (A4), ground water pollution rate (A5gw), soil pollution rate (A5soil), amount of discharged polluted water into the ground (Bgw), amount of soil pollution (B soil) and human toxicity pollution potential (HTP), which includes human toxicity groundwater pollution (HTPgw) and human toxicity potential soil pollution (HTPsoil).
Preferably, the amount of discharged polluted water into the ground (Bgw) is the total units of polluted water discharged within a plurality of designated periods. The amount of soil pollution (Bsoil) is the total units of polluted soil caused within a plurality of designated periods.
Preferably, the environment site evaluation list includes an environment site evaluation list of high risk level including advising to conduct on-spot environment site evaluation for each abandoned plant; an environment site evaluation list of middle high risk level including determining environment site evaluation procedure of abandoned plants based on the pollution potential factor; an environment site evaluation list of middle risk level including further soil observation and managing of abandoned plants; and an environment site evaluation list of low risk level including no obvious public environment risk, no need of follow-up investigation.
Preferably, the second risk evaluation value (T2) is equivalent to a total sum of a second groundwater environment risk factor (Sgw, 2) and a second soil environment risk factor (Ssoil, 2) and is multiplied by a weighting factor (F). The second groundwater environment risk factor (Sgw, 2) is computed from root mean square (RMS) of a second underground water pollution potential factor (Pgw, 2), an underground environmental vulnerability factor (Cgw) and an underground water pollution receptor factor (Dgw), wherein the second underground water pollution potential factor (Pgw, 2) is computed from the environment risk data and the environment site evaluation data.
Preferably, the environment site evaluation data includes the following factors: plant running quality factor (I1), plant facilities factor (I2), history of plant relocation factor (I3), previous environmental spill or accident factor (I4), pollution potential factor (I5) and change in land or land quality inspection rating factor (I6).
Preferably, the investigation list includes an investigation list of high environment risk level including advising to conduct on-spot investigation of abandoned plants; and an investigation list of middle high environment risk level including advising to conduct further investigation of abandoned plants.
The second risk evaluation result includes a second risk evaluation value, from which, a second risk level is defined, wherein, the investigation list is defined based on the second risk level so as to facilitate the follow-up management and investigation, which in turn, economizes human labor and time.
The present invention will be apparent to those skilled in the art by reading the following detailed description of a preferred embodiment thereof, with reference to the attached drawings, in which:
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
In a first risk evaluation step S20: using a first risk evaluation module to generate a first risk evaluation result for each abandoned plant, wherein the first risk evaluation result includes a first risk evaluation value (T1); and a first risk level defined based on the first risk evaluation value (T1). In one embodiment, the first risk evaluation module utilizes the following equation (1) to generate the first risk evaluation value (T1). In this embodiment, the first risk evaluation value (T1) is computed from the following equation 1:
T
1=(Sgw,1+Ssoil,1)×F (1)
In the above equation, Sgw, 1 is a first underground water environment risk factor; Ssoil,1 is a first soil environment risk factor; and F is a weighting factor. Assuming the weighting factor F=1.5, the first underground water environment risk factor Sgw, 1 and the first soil environment risk factor Ssoil, 1 can be computed respectively from the equations (2) and (3);
S
gw,1=√{square root over ((Pgw,12+Cgw2+Dgw2)/3)} (2)
S
soil,1=√{square root over ((Psoil,12+Csoil2)/3)} (3)
In the above equation, Pgw, 1 and Psoil, 1 respectively represent the first underground water and potential soil pollution factors; Cgw and Csoil respectively stand for underground water and soil environment vulnerability factor; and Dgw and Dsoil respectively represent underground water and soil pollution receptor factor. According to the environment risk data, the first underground water (Pgw, 1) and the first potential soil pollution factor (Psoil, 1) from the equations (2) and (3) can be computed from the following equations (4) and (5). However, owing to different running operation of the plants and time differences, the total sum for the pollution potential value of each abandoned plant is:
P
gw, 1=Σ/(A1×A2×Bgw×I1×(1+A3)×I2) (1+A4×I3+I4)×I5×(1+A5gw)×HTPgw]×I6 (4)
P
soil,1=Σ/(A1×A2×Bsoil×I1×(1+A3)×I2) (1+A4×I3+I4)×I5×(1+A5soil)×HTPsoil]×I6 (5)
The underground water and soil environment vulnerability factors Cgw and Csoil of the equations (2) and (3) can be computed from the following equations (6) and (7);
Cgw=C1+C5+C6+C7 (6)
C
soil
=C
2
+C
3
+C
4 (7)
The underground water factor (Dgw) and the soil pollution receptor factor (Dsoil) of equations (2) and (3) can be computed from the following equations (8) and (9);
D
gw
=D
1
+D
3 (8)
D
soil
=D
1
+D
2 (9)
The corresponding value for the previous air pollution, water pollution, waste, poisonous chemical record factors (A3) are shown in table 1, the corresponding value of plant transfer time factor (A4), if transfer of the plant ownership take place once 1, if there is no transfer of plant ownership 0; the corresponding value for infiltration amount factor (C1), topographical factor (C2), soil medium factor (C3) and ventilation layer medium factor (C4) are shown in table 2; the corresponding value for hydraulic conductivity factor (C5), groundwater depth factor (C6) and aquifer medium factor (C7) are shown in table 3; and the corresponding value for population density factor (D1), soil/sediment contact risk factors (D2), and groundwater risk contact factors (D3) are shown respectively in tables 4--6. Amount of discharged polluted water into the ground (Bgw), amount of soil pollution (B soil), human toxicity pollution potential (HTP), previous environmental spill or accident factor (I4) (A5) are shown respectively in tables 7 and 8. If there is one time occurrence of environmental spill or accident, the accident factor (I4) is increased 1 while if there is no occurrence of environmental spill or accident, the accident factor (I4) is equivalent to 0.
0~2.5
5~6.7
The first risk evaluation value (T1) of the abandoned plants, and the accumulated of first risk level are shown in table 9. The high risk level and scope is 90% greater than the accumulated first risk evaluation value, i.e., the first risk evaluation value (T1) ranges 60-100; the middle high risk level is 50%-90 greater than the accumulated first risk evaluation value, i.e., the first risk evaluation value (T1) ranges 40-59, the middle risk level is greater than 10-50% of the accumulated first risk evaluation value, i.e., the first risk evaluation value (T1) ranges 30-39 while the low risk level is 10% smaller than the accumulated first risk evaluation value, i.e., the first risk evaluation value (T1) ranges 0-29.
In the environment site evaluation step S30, the investigator fetches the environment site evaluation data and the updated environment risk data. Firstly, the environment site evaluation list is defined based on the first risk level and the first risk evaluation value (T1). That is if the first risk evaluation value (T1) ranges 60-100, an environment site evaluation list of high risk level is defined. If the first risk evaluation value (T1) ranges 40-59, an environment site evaluation list of middle high risk level is defined. If the first risk evaluation value (T1) ranges 30-39, an environment site evaluation list of middle risk level is defined. If the first risk evaluation value (T1) ranges 0-29, an environment site evaluation list of low risk level is defined. Afterward, the abandoned plants in the environment site evaluation list of the high or middle risk level are further classified again so as to update the environment site evaluation data and the environment risk data, wherein the environment site evaluation data includes the following factors: plant running quality factor (I1), plant facilities factor (I2), history of plant relocation factor (I3), previous environmental spill or accident factor (I4), pollution potential factor (I5) and change in land or land quality inspection rating factor (I6).
In the second risk evaluation step S40: the investigator fetches the updated environment risk data and the environment site evaluation data via the second risk evaluation module as in the first risk evaluation step S30 to compute out the second risk evaluation result for each abandoned plant, wherein the second risk evaluation result in fact is the second risk evaluation value (T2), from which the second risk level is defined. The second risk evaluation value (T2) can be computed from the following equation 10:
T
2−(Sgw,2+Ssoil,2)×F (10)
In the above equation, Sgw, 2 is a second groundwater environment risk factor; Ssoil, 2 is the second soil environment risk factor; F is the weighting factor, in one embodiment it is assumed as 1.5. The second groundwater environment risk factor Sgw, 2 and the second soil environment risk factor Ssoil, 2 of the above equation (10) can be computed from the following equations (11) and (12) respectively:
S
gw,2=√{square root over ((Pgw,22+Cgw2+Dgw2)/3)} (11)
S
soil,2=√{square root over ((Psoil,22+Csoil2+Dsoil2)/3)} (12)
In the above equation, Pgw, 2 and Psoil, 2 respectively represent the second ground water and the second soil pollution potential factor; Cgw and Csoil respectively represent ground water and soil environment vulnerability factor; Dgw and Dsoil respectively represent ground water and soil pollution receptor factors. The second ground water Pgw, 2 and the second soil pollution potential factor Psoil, 2 of the above equations (11) and (12) are based on the updated environment risk data and the environment site evaluation data and can be computed from the following equations (13) and (14), wherein owing to different running operation of the plants and time differences, the total sum for the pollution potential value of each abandoned plant is:
P
gw, 2=Σ[(A1×A2×Bgw×I1×(1+A3)×I2) (1+A4×I3+I4)×I5×(1+A5gw)×HTPgw]×I6 (13)
Psoil, 2=Σ[(A1×A2×Bsoil×I1×(1+A3)×I2) (1+A4×I3+I4)×I5×(1+A5soil)×HTPsoil]×I6 (14)
The evaluated ways of the updated environment risk data is the same as the previous environment risk data. The environment site evaluation factor data includes the following factors: plant running quality factor (I1), plant facilities factor (I2), history of plant relocation factor (I3), previous environmental spill or accident factor (I4), pollution potential factor (I5) and change in land or land quality inspection rating factor (I6) obtained from Table 10. An important aspect to note is that for the common knowledge in this technical field, Table 10 clearly shows the sorting level and recycling of the value of environment site evaluation is likely happened. Preferably, the value of environment site evaluation data of the present invention is determined by professional persons, who possess the following qualifications (1) professional technicians possessing environment engineering, applied geology, geotechnical engineering practice license; (2) persons having more than three years, soil or groundwater pollution investigation after completing at least Master Degree from public or private university or independent college recognized by the Ministry of Education or foreign university in engineering or site assessment of relevant work experience; and (3) persons having more than five years in soil or groundwater pollution investigation after graduating in the engineering, agriculture, medicine field from public or private university recognized by the Ministry of Education or foreign university or relevant work experience. More preferably, the previously mentioned persons should have been trained through the government agency in charge of environmental protection, and have passed or completed the test concerning environmental protection.
In the risk managing step S50, an investigation list of each abandoned plant is generated based on the second risk evaluation result as a basis for follow-up investigation. Firstly, the investigation list is defined based on the second risk level and the second risk evaluation value (T2), that is a high risk investigation list is defined when the second risk evaluation value (T2) ranges 60-100%, a middle high risk investigation list is defined when the second risk evaluation value (T2) ranges 40-59%; a middle risk investigation list is defined when the second risk evaluation value (T2) ranges 30-39% and a low risk investigation list is defined when the second risk evaluation value (T2) ranges 0-29%. Afterward, based those investigation lists, the following Table 11 is drawn as a basis for follow-up investigation, wherein plant A . . . I indicates code for abandoned plant.
In one embodiment of the present invention, the preliminary step further includes a conditional sorting procedure that consists of plant site area of the environment risk data, plant location and storeys of each abandoned plant, and classification of abandoned plants into different groups based on usage change of each abandoned plant so as to serve as follow-up investigation for the specific group with lesser pollution, thereby avoiding the undesired investigation process. For instance, the abandoned plant concerns metal industry, having a surface area 1378 square meter, registered in 1995, abandoned in 2003, the registered address is No. XXX, 4F, X road and etc. According to the environmental risk data, the above abandoned plant is included in the middle high risk list based on the first risk evaluation result, a further investigation is needed. Since the abandoned plant is located at 4th floor, there should not be any soil or water pollution potential data. Owing to the merit of conditional sorting procedure, the above mentioned plants can be re-classified into another groups, thereby avoiding the environment risk evaluation resulted from the first risk evaluation list.
In one embodiment of the present invention, under different environment protection laws of different periods, the amount of discharged polluted water into the ground (Bgw) and the amount of soil pollution (Bsoil) caused thereby by a certain type industry are relatively high or low. Therefore, in order to avoid the mis-evaluation of the discharged pollutants calculated by average mean of the total years, the abandoned plants are classified into different groups based on discharged amount of polluted water into the ground (Bgw) and the amount of soil pollution (Bsoil) according to the designated time and year. For instance, the person concerned wishes to investigate one particular plant abandoned before the year 2005, the amount of discharged polluted water into the ground (Bgw, before 2005, Bgw, after 2005) and the amount of soil pollution (Bsoil, before 2005, Bsoil, after 2001) caused by one specified industry before and after Jan. 1, 2005 are evaluated as the basis of the follow-up investigation so that he can evaluate the amount of polluted water discharged into the ground (Bgw) and the amount of soil pollution (Bsoil) caused by that specified industry or plant abandoned after the year 2005.
The environment site evaluation step S30 includes fetching the on-spot environment risk data of each abandoned plant and since the environment risk data within the environment plant database is inconsistent with the on-sport environment risk data owing to incomplete record of the abandoned plant. Under this condition, the environment site evaluation step includes fetching the on-spot environment risk data of each abandoned plant and updating the environment risk data within the environment plant database, wherein the on-spot environment risk data includes the on-spot pollution potential factor data and the on-spot environment factor data. Preferably, the on-spot pollution potential factor data includes the on-spot plant area (A1′), the on-spot plant running yea (A2′), the previous air pollution, water pollution, waste, poisonous record factors (A3′), the on-spot plant transfer time factor (A4′), the on-spot potential ground water pollution (A5gw) of a respective plant (A5gw′), the on-spot potential soil pollution (A5soil′), the on-spot amount of discharged polluted water into the ground (Bgw′), the on-spot amount of soil pollution (Bsoil′), the on-spot human toxicity potential groundwater pollution (HTPgw′), and the on-spot human toxicity potential soil pollution (HTPsoil′). The on-spot environment risk data preferably include the on-spot infiltration amount factor (C1′), the on-spot topography factor (C2′), the on-spot soil medium factor (C3′), the on-spot ventilation layer medium factor (C4′), the on-spot hydraulic conductivity coefficient factor (C5′), the on-spot groundwater depth factor (C6′), the on-spot aquifer medium factor (C7′), the on-spot population density factor (D1′) and the on-spot soil /sediment contact risk factor (D2′).
As explained above, the following advantages are achieved. The investigator is capable of fetching the first environment risk evaluation list based on the conditional sorting procedure, thereby narrowing the scope of the environment site risk evaluation and thus obtaining the environment site evaluation list including the environment evaluation data and the updated environment risk data. Afterward, he is capable of fetching the second environment risk evaluation list based on the environment evaluation data and the updated environment risk data such that the second environment risk evaluation list is generally similar to the present condition of each abandoned plant, thereby facilitating the sorting environment risk for controlling abandoned plants.
Although the present invention has been described with reference to the preferred embodiments thereof, it is apparent to those skilled in the art that a variety of modifications and changes may be made without departing from the scope of the present invention which is intended to be defined by the appended claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 103126785 | Aug 2014 | TW | national |
