JP2001167194A - Environmental impact assessment method for corporate activities - Google Patents

Abstract

(57) [Summary] [Problem] An environmental load evaluation method that can quickly and easily grasp whether or not any treatment method is effective in reducing environmental load in the treatment of industrial waste in corporate activities, etc. I do. SOLUTION: A plurality of environmental load items such as environmental pollution and processing cost are set, and a score value corresponding to a load level is assigned to each environmental load item. A total score value is calculated, a ratio between these total score values is calculated, and reduction of environmental load is relatively evaluated based on the ratio.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the evaluation of corporate activities based on factors that affect the natural environment and the environment surrounding a company in terms of various factors. More specifically, the present invention relates to the treatment and disposal of industrial waste and the like. The present invention relates to an evaluation method that can be used to determine whether an improvement plan can reduce the load on the environment.

[0002]

2. Description of the Related Art The burden on the environment caused by the activities of companies includes, for example, the disposal of industrial waste. It is well known that this waste disposal problem is widely regarded as a social problem such as generation of dioxins, expansion of landfills, and outflow of toxic substances.

[0003] Conventionally, with respect to corporate activities such as waste disposal, ordinances and laws concerning waste disposal have been enforced in order to protect the natural environment and prevent damage to humans and livestock.
Preparation of international standards such as O14000 is also progressing.
Today, companies are promoting environmentally friendly activities,
It is no exaggeration to say that improving the corporate image is one of the important strategies. Taking waste treatment as an example, in reality, not only environmental protection, but also evaluation including cost-effectiveness in corporate activities has a great significance. Specifically, there are many methods of waste disposal, such as incineration, landfill disposal, and recycling (recycling). Needless to say, it is desired to establish a criterion for objectively evaluating whether or not the adverse effect on the environment, including the business environment, can be minimized.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an evaluation method for evaluating the burden on the environment caused by corporate activities such as the disposal and recycling of industrial waste.
In particular, it is an object of the present invention to propose a method for evaluating environmental load in corporate activities, which can quickly and easily grasp the effect of reducing the environmental load compared to the current situation.

[0005]

Means for Solving the Problems To achieve the above object, the method for assessing environmental load in business activities of the present invention is intended to reduce environmental pollution and depletion of resources in business activities such as industrial waste treatment. A process of setting a plurality of environmental load items relating to processing costs and the like and arranging a score value corresponding to a load level for each environmental load item; A step of calculating each total value of the corresponding score values, and a step of calculating a ratio between the obtained two or more score total values and determining a relative environmental load reduction effect in each process based on the ratio. It is characterized by becoming.

In addition, the present invention includes the present process and a plurality of other process plans in the two or more processes, and calculates the total score of each process plan and the total score of the current process. It is also possible to determine each ratio between the two, and compare the calculated ratios to determine a processing plan that can reduce the load on the environment most. In this case, the total value of each score of the above processing plan is
Each ratio obtained by dividing by the total score of the current process described above,
The environmental load reduction index for each treatment plan is set. If the environmental load reduction index is 1, it is evaluated that there is no improvement effect as compared with the current processing. The load is reduced compared to the processing, but it was evaluated that it was not very effective. If it was 0.7 or less and more than 0.5, it was evaluated that there was a slight improvement effect, and if it was 0.5 or less, it was an effective processing method. It is desirable to make an evaluation decision.

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION As an embodiment of the present invention, a case will be described in which the environmental load generated by a means for treating industrial waste is evaluated. Table 1 is a list of environmental load factor scores used in the present embodiment. This table shows the environmental factors related to waste treatment by the present inventors according to ISO.
-14000, which is obtained by objectively scoring the load level with reference to the standards and standards set forth in the Pollution Control Law and the Waste Management Law.

[0008]

[Table 1]

In this table, 20 types of environmental load items are listed as judgment factors for checking the load on the environment.
For each environmental load item, 5 according to the load level on the environment
A grading is performed. Five ranks are assigned points for evaluation calculation. In the present embodiment, points are added one by one as the load on the environment increases, and five points are assigned to the rank that has the greatest adverse effect on the environment and the like.

The numerical values of the ranks and the points shown in Table 1 are examples for explaining the present invention, and the present invention scores several waste disposal means as described later. However, it is a relative evaluation method that compares these results, so there is no problem if the same reference value is used between comparison targets.
It is not limited to the numerical values of the present embodiment.

For example, the list of the environmental load factor scores is used as follows. First, if it is intended to improve the current waste treatment process (hereinafter referred to as “current treatment”), a process that may be adopted in the future instead of the current treatment process (hereinafter referred to as “reduction”) (Referred to as chemical treatment). Then, by referring to Table 1, for each of the current processing step and the reduction step, all the scores of the corresponding rank in each environmental load item are added. The total score is obtained for each processing step.

Next, a reduction index α in the above reduction processing is obtained based on the following equation. α = total score of reduction processing / total score of current processing

The reduction index α is a ratio based on the numerical value of the current process and a relative value. In this case, the evaluation criteria are as follows. If the reduction processing is set to the numerator and the current processing is set to the denominator as in the above equation, the numerical value of the reduction index α should decrease as the reduction progresses. It is meaningless to change the process from the process to the reduction process. If the value is smaller than 1 and larger than 0.7, the load is less than that of the current process, but it is not very effective.
When it is 0.7 or less and larger than 0.5, it is evaluated that there is a slight improvement effect. If α is 0.5 or less, it can be understood that the direction of improvement in waste disposal is extremely desirable.

As described above, scoring is performed using not only adverse effects on the natural environment but also multifaceted judgment factors including viewpoints on the business environment such as processing costs and corporate image. Just by looking at the ratio between the total score values, it is possible to make an objective management decision taking into account the effects on the entire corporate environment formed by complex factors. In other words, using a list that sets the main survey items in a certain processing field, if applied to many companies, it is possible to compare strategies between companies, and furthermore, companies themselves
It is possible to sort quickly and accurately from a plurality of processing means.

[0015] In particular, in a business environment where it is desired to detoxify or recycle waste, what is the situation after the improvement compared to before, or the improvement plan is It provides a certain criterion of whether the situation is effective or not, like a litmus test paper, though it is a little about, so that anyone can judge the situation easily, quickly and accurately.

Hereinafter, an evaluation example of an actually designed disposal process will be described. [Evaluation Example 1] Table 2 shows score calculation in waste plastic processing. This score calculation is basically based on Table 1.
Is based on the list.

[0017]

[Table 2]

As shown in Table 2, the current waste plastic treatment is based on landfill disposal, whereas the reduction treatment evaluates the case where incineration disposal is selected. Here, two processing means are prepared as the reduction processing. In other words, normal incineration and the case in which dioxin is improved from normal incineration to incineration that can suppress the generation of dioxin are also calculated. From the total score in Table 2, the two reduction processes are calculated. The reduction index α was calculated as follows. Normal incineration: α = 11/15 = 0.73 Incineration after improvement: α = 7/15 = 0.47

From these results, α is 1.
0 or less, which proved that the load was reduced at least compared to the current processing. However, in normal incineration, α is 1.0
This is a value close to and is not a desirable process. On the other hand, treatment that suppresses the generation of dioxin, which has become a social problem, leads to an improvement in corporate image in addition to a reduction in environmental damage. It turns out what can be said.

[Evaluation Example 2] Table 3 shows the score calculation in the waste treatment of the liquid crystal glass. This score calculation also
Basically, it is based on the list in Table 1.

[0021]

[Table 3]

In this example, the liquid crystal glass is disposed of by landfill at present, but the evaluation of the reduction of the environmental load when the liquid crystal glass is recycled (recycled) is evaluated. In Table 3, the total score of the reclaimed waste for the purpose of reduction is calculated, and two examples of 10 mm square and 5 mm square in which the size of the glass piece at the time of pulverization is different for the recycle treatment are shown. . Based on the total score calculated for each of the landfill disposal and the recycling disposal, α calculated for each glass piece size was as follows. 10 mm square: α = 12/26 = 0.465 5 mm square: α = 18/26 = 0.69

As described above, according to the recycling process, the load on the environment is all improved by weight reduction, heavy metals, avoidance of landfills, etc., and the image of the company is also improved. This synergistic effect results in a small value of α. . And if the glass piece at the time of grinding is 10 mm square, α cuts 0.5,
The appropriate size of the glass piece was found to be 10 mm square.

[0024]

As described above, the method for evaluating environmental load in business activities according to the present invention is applicable to a plurality of processes related to environmental pollution, resource depletion, processing costs, and the like for business activities such as industrial waste processing. Setting an environmental load item and assigning a score value corresponding to the load level for each environmental load item; and referring to the environmental load item for two or more different processes, each of the corresponding score values. Obtaining a total value;
Calculating the ratio between the obtained two or more total score values and determining the relative environmental load reduction effect in each treatment based on the ratio. (2) It is possible to quickly and accurately evaluate whether any of the two or more processes is effective in reducing the environmental load.

Further, the two or more processes include the current process and a plurality of other process plans, and each ratio between the total score of the current process plan and the total score of the current process. According to the method of determining a treatment plan that can reduce the burden on the environment by comparing the ratios obtained, the current and / or future treatment / disposal, etc. By comparison, it is possible to quickly and easily determine whether or not any processing is desirable.

Claims (3)

[Claims] Claims: 1. Landfill for corporate activities such as industrial waste treatment,
A process of setting a plurality of environmental load items relating to environmental pollution, resource depletion, processing costs, and the like for processes such as incineration and regeneration, and assigning a score value according to a load level for each environmental load item; A step of calculating each total value of the corresponding score values with reference to the environmental load items for the above processing, and calculating a ratio between the obtained two or more total score values, and calculating each ratio based on the ratio. Determining a relative environmental load reduction effect. 2. The ratio between each total score of the processing plan and the total score of the current processing, including the current processing and a plurality of other processing plans in the two or more processings. The environmental load evaluation method according to claim 1, wherein a processing plan capable of reducing the environmental load is determined by comparing the calculated ratios. 3. A ratio obtained by dividing the total score of each processing plan by the total score of the current processing is defined as an environmental load reduction index for each processing plan. Is 1 when it is evaluated that there is no improvement effect as compared with the current processing, and when it is smaller than 1 and larger than 0.7, it is evaluated that the load is reduced but not so effective as compared with the current processing. The method according to claim 2, wherein if the value is less than 0.5 and larger than 0.5, it is evaluated that there is a slight improvement effect, and if the value is 0.5 or less, the method is evaluated as an effective processing method. Environmental load evaluation method.