Towards a recycling-oriented society Waste Report

Transcription

1 Towards a recycling-oriented society Waste Report 2018 Contents Flow of waste and resources in the 23 cities 1 Ⅰ Overview of the Clean Authority of TOKYO 1. Background and purpose of establishment 2. FY 2017 Budget 3 II Each city collects/transfers waste and collects resources 1. Collection 2. Transfer III Intermediate Treatment of Waste 1. Processing combustible waste 2. Improper waste disposal may cause a halt or failure of incinerators 3. Bottom ash is recycled as raw material for cement 4. Bottom ash is melted to make slag 5. Environmental measures to prevent exhaust and wastewater emissions 6. Putting the heat energy generated from incineration to beneficial use 7. Processing incombustible waste and large-sized waste IV Landfill disposal sites established and managed by the Tokyo Metropolitan Government 1. Chronology of landfill disposal sites 2. Methods of landfill disposal 3. Structure of landfill disposal sites V Statistics/Data 1. Exercise 3R ~ Every person can do it ~ 2. Legal system for forming a recycling-oriented society 3. Transition in waste volume, incineration volume, landfill disposal volume, and resource recovery volume 4. Amount of waste generated by one person per day 5. Disposal cost for waste and night soil 6. Facilities list of the Clean Authority of TOKYO

2 (As of December 2017) Suginami Incineration Plant

3 2. FY 2017 Budget Initial budget for FY 2017: B (US$735.55M) Others 0.313B(US$3.13M) 0.4% Carryover Transfer from financial adjustment fund 4.898B (US$48.98M) 6.7% Bond issuance, subsidies, etc. Loans and subsidies received for reconstruction of incineration plants B(US$104.41M) 14.2% Allotment Amount paid by each of the 23 Cities for operational expenses of incineration plants, etc B(US$334.00M) 45.4% Fees, power sales, etc. Disposal fees paid by businesses and proceeds from sales of generated electricity, etc B(US$245.03M) 33.3% Public loans Repayment of loans 3.111B(US$31.11M) 4.2% Costs for general affairs, assemblies, etc. Management expenses for the main office, labor costs of the main office, operational expenses for assemblies, etc B (US$50.69M) 6.9% Plant maintenance costs Costs for the reconstruction, etc., of incineration plants B(US$186.71M) 25.4% Waste management costs Maintenance costs required for regular inspections of incineration plants, utility costs, purchasing costs of chemicals to protect the environment, costs related to recycling ash, labor costs, etc B (US$467.04M) 63.5%

4 2017 Central Control Room (Nerima Incineration Plant)

5 4. Bottom ash is melted to make slag 3. Bottom ash is recycled as raw material for cement What does it mean to recycle bottom ash as raw material for cement? When combustible waste is incinerated, bottom ash and fly ash are generated. Among them, bottom ash, except for the portion which is melted to make slag, used to be disposed at the landfill along with fly ash processed with chemicals. However, currently we are making effort to utilize it as raw material for cement. "Cement raw material conversion" means to transport bottom ash to private cement factories by freight lorries, railway freight and ships in order to utilize bottom ash as a substitute raw material for clay, which is one of the raw materials for Portland Cement*. At Clean Authority of TOKYO, in FY 2013 we started verification and confirmation of the method of loading bottom ash from the incineration plant, safety of each transportation method, and compatibility as a raw material for cement. And, we started full-scale implementation from FY2015. The actual result of cement raw material production for FY2016, which is a combination of trial verification period and full-scale implementation, totaled approximately 11,000 tons. We intend to increase cement raw material production in stages, continuing to promote the reduction of landfill disposal volume and effective use of resources. * It is the most common general-purpose cement which accounts for about 70% of cement consumed in Japan. Raw materials for cement are limestone, clay, silicone, iron raw material and gypsum. Incineration plants use the heat energy generated from waste incineration beneficially in power generation and in supplying energy. Electricity and hot water produced at plants are used within facilities to operate the plant, thereby reducing electricity purchases and fuel costs. Surplus electricity is sold to power companies. All of the plants sell electricity, and four plants sell heat as hot water to other facilities. Sales performance in FY 2016 is shown in the table on the right ,000 * Based on the website of the electric power company 3,120 FY 2016* 1 Beneficial use of heat *1 From March 2016 to February 2017 for statistical reasons

6 (as of the end of FY 2016) 7.77 (as of the end of FY 2016)

7 shore protection or caisson type outer Recycling

8 (As of December 2017) FY 2016: Landfill disposal volume was reduced by 85% from FY1989 to 0.35 million tons 2016 Final year 36,000 Hitachi Zosen Von Roll 24, Meguro and Hikarigaoka Incineration Plants are currently not in operation due to plant reconstruction. Method of calculation: The amount of waste generated was divided by population in FY 2016, and the unit was converted into grams. * Costs required for the collection, transfer, processing, and disposal in FY grams 2,754,293 tons 9,292,776 people 365 days 1,000,000 The population data is based on Households and Population (including Japanese People and Foreign Nationals) Based on the Basic Resident Register, Statistics Department, Bureau of General Affairs, Tokyo Metropolitan Government (As of October 1, 2016). * Amount of waste generation includes business-generated waste. 55,093 (US$ ) 89,212 (US$ )

9 (As of December 2017) Area of Tokyo as of October 1, 2016 Estimated population of Tokyo as of October 1, ,743 9,467 Waste Report December 2017 平成 29 年度第 32 号 INET Co., LTD.