5:15 PM - 6:30 PM
[HDS08-P04] Estimating the amount of waste treatment units in the event of a disaster with self-help and mutual support
Keywords:Self-help, mutual support, disaster volunteers, disaster waste, waste disposal
1. Introduction
In recent years, regional disasters that cause enormous damage have occurred almost every year in various parts of Japan. As a self-help activity, there is a labor shortage due to the work of cleaning up the victim's house, but there are also disaster volunteers who voluntarily participate from inside and outside the area to make up for the shortage.
Since the Great East Japan Earthquake on March 11, 2011, I have been involved in the operation of disaster volunteer centers in various places, but I found it difficult to adjust the actual amount of work and the number of victims in the disaster area. To solve this problem, it is important to understand the amount of work required for self-help and mutual support and the total number of activists, and to clarify the breakdown of the total number of mutual support.
T In this study, we will grasp the total amount of self-help and mutual support. We first examined the total number of activities including self-help and mutual support in past disasters. We also calculated the amount of disaster waste treated in units of 100 people, which is the unit of the amount of treatment required to make a rough estimate.
2. Survey method
It is necessary to grasp the total amount of disaster waste caused by a disaster and clarify the breakdown amount for which self-help and mutual support are in charge of processing work. The target disaster waste is waste that can be manually cleaned on the premises of private land. The Ministry of the Environment investigates and reports on the breakdown of waste for each disaster.
Self-help / mutual support targets cleanup waste in disaster waste (waste discharged when citizens clean up damaged items at home), and cleanup waste includes combustibles and wood chips, Tatami, incombustibles, household waste, etc.
By dividing the amount of cleanup waste by the amount of self-help and mutual support activities, the unit amount of cleanup waste disposal work by self-help and mutual support can be obtained.
3. result
In 2015, the flood damage in Joso City, Kinugawa basin, was used as a model. The Joso City Disaster Volunteer Center was active for 58 days.
Assuming that one-quarter of the residents in the area where the evacuation order was issued were self-help volunteers, the total number of volunteers was 504,842 in 58 days. The total amount of disaster waste from floods in 2015 was 52,400 tons.
It was assumed that the waste to be cleaned up was combustibles, incombustibles, and earth and sand, and as condition (1), it was assumed that combustibles were almost 100% as household waste and incombustibles and earth and sand were 50%. In addition, as condition (2), a trial calculation was made assuming that combustibles are 100% and incombustibles and earth and sand are 25%. The weight ratio of combustibles and incombustibles / earth and sand will be ignored this time.
In the case of condition (1), combustibles account for 6.4% of the total amount of waste. Incombustibles account for 35.25%. Sediment is 6.0%. The ratio and weight of the target cleanup waste are
6.4 + 35.25 + 6.0 = 47.65%
52,400t × 47.65 = 24,968.6t
Assuming that this cleanup waste was processed by 504,842 people, 4.946 tons can be processed per 100 people.
In the case of condition (2), combustibles account for 6.4% of the total amount of waste. Incombustibles account for 17.625%. Sediment is 3.0%. The ratio and weight of the target cleanup waste are
6.4 + 17.625 + 3.0 = 30.025%
52,400t × 30.025 = 15,733.1t
Assuming that this cleanup waste was processed by 504,842 people, 3.116 tons can be processed per 100 people.
Also, using the estimation formula of the Ministry of the Environment, the total amount is estimated to be about 9541.933 tons. Assuming that this cleanup waste was processed by 504,842 people, 1.890 tons can be processed per 100 people.
As a result, it was found that the disaster waste treatment unit that can be treated in one day is 3t (2-5t) / 100 people.
In recent years, regional disasters that cause enormous damage have occurred almost every year in various parts of Japan. As a self-help activity, there is a labor shortage due to the work of cleaning up the victim's house, but there are also disaster volunteers who voluntarily participate from inside and outside the area to make up for the shortage.
Since the Great East Japan Earthquake on March 11, 2011, I have been involved in the operation of disaster volunteer centers in various places, but I found it difficult to adjust the actual amount of work and the number of victims in the disaster area. To solve this problem, it is important to understand the amount of work required for self-help and mutual support and the total number of activists, and to clarify the breakdown of the total number of mutual support.
T In this study, we will grasp the total amount of self-help and mutual support. We first examined the total number of activities including self-help and mutual support in past disasters. We also calculated the amount of disaster waste treated in units of 100 people, which is the unit of the amount of treatment required to make a rough estimate.
2. Survey method
It is necessary to grasp the total amount of disaster waste caused by a disaster and clarify the breakdown amount for which self-help and mutual support are in charge of processing work. The target disaster waste is waste that can be manually cleaned on the premises of private land. The Ministry of the Environment investigates and reports on the breakdown of waste for each disaster.
Self-help / mutual support targets cleanup waste in disaster waste (waste discharged when citizens clean up damaged items at home), and cleanup waste includes combustibles and wood chips, Tatami, incombustibles, household waste, etc.
By dividing the amount of cleanup waste by the amount of self-help and mutual support activities, the unit amount of cleanup waste disposal work by self-help and mutual support can be obtained.
3. result
In 2015, the flood damage in Joso City, Kinugawa basin, was used as a model. The Joso City Disaster Volunteer Center was active for 58 days.
Assuming that one-quarter of the residents in the area where the evacuation order was issued were self-help volunteers, the total number of volunteers was 504,842 in 58 days. The total amount of disaster waste from floods in 2015 was 52,400 tons.
It was assumed that the waste to be cleaned up was combustibles, incombustibles, and earth and sand, and as condition (1), it was assumed that combustibles were almost 100% as household waste and incombustibles and earth and sand were 50%. In addition, as condition (2), a trial calculation was made assuming that combustibles are 100% and incombustibles and earth and sand are 25%. The weight ratio of combustibles and incombustibles / earth and sand will be ignored this time.
In the case of condition (1), combustibles account for 6.4% of the total amount of waste. Incombustibles account for 35.25%. Sediment is 6.0%. The ratio and weight of the target cleanup waste are
6.4 + 35.25 + 6.0 = 47.65%
52,400t × 47.65 = 24,968.6t
Assuming that this cleanup waste was processed by 504,842 people, 4.946 tons can be processed per 100 people.
In the case of condition (2), combustibles account for 6.4% of the total amount of waste. Incombustibles account for 17.625%. Sediment is 3.0%. The ratio and weight of the target cleanup waste are
6.4 + 17.625 + 3.0 = 30.025%
52,400t × 30.025 = 15,733.1t
Assuming that this cleanup waste was processed by 504,842 people, 3.116 tons can be processed per 100 people.
Also, using the estimation formula of the Ministry of the Environment, the total amount is estimated to be about 9541.933 tons. Assuming that this cleanup waste was processed by 504,842 people, 1.890 tons can be processed per 100 people.
As a result, it was found that the disaster waste treatment unit that can be treated in one day is 3t (2-5t) / 100 people.