目次第１章 総論
1.1 社会実験の概要····························································· 1

1.2 歌登町の概要······························································· 5

1.3 下水道事業の概要··························································· 9

1.4 ごみ処理事業の概要························································· 13

1.5 ディスポーザーの設置・維持管理·············································· 16

第２章 ディスポーザー排水の原単位
2.1 ディスポーザー投入厨芥量···················································· 25

2.2 ディスポーザー排水の水質転換率·············································· 52

2.3 ディスポーザー排水量および電力消費量········································ 57

2.4 ディスポーザー使用時刻および回数 ·············································· 63

第３章 排水設備への影響3.1 排水管の現状 ································································· 65
3.2 宅地内排水桝の現状 ··························································· 69
3.3 屋内排水管におけるトラブル発生状況 ············································ 74

第４章 管渠への影響
4.1 管渠の概要································································· 79

4.2 ＴＶカメラ映像····························································· 82

4.3 堆積物および付着物の性状···················································· 85

4.4 堆積物および付着物量 ························································· 99
4.5 管渠勾配 ····································································· 103
4.6 卵殻・貝殻のディスポーザー投入量 ·············································· 105
4.7 厨芥由来堆積物の掃流特性······················································ 108
4.8 硫化水素発生······························································· 119

第５章 ポンプ場施設への影響
5.1 ポンプ場施設の概要
5.2 運転状況の把握························································· 125····························································· 126

5.3 堆積物および付着物の性状···················································· 128

第６章 下水処理施設への影響
6.1 下水処理施設の概要························································· 133

6.2 水処理施設への影響························································· 138

6.3 汚泥処理施設への影響 ························································ 149

第７章 ごみ処理事業への影響
7.1 ごみ処理事業の概要·························································· 157

7.2 ごみ量····································································· 161

7.3 ごみ収集··································································· 168

7.4 ごみ処理施設······························································· 173

第８章 町民生活への影響
8.1 目的······································································· 181

8.2 メリット・デメリットの整理·················································· 181

8.3 調査方法··································································· 182

8.4 調査結果··································································· 192

第９章 環境への影響
9.1 検討条件··································································· 213

9.2 検討方法··································································· 215

9.3 検討結果··································································· 236

第１０章 社会経済への影響
10.1 検討目的·································································· 241

10.2 検討方法·································································· 241

10.3 検討結果·································································· 246

第１１章 ディスポーザー普及率 100%時の影響
11.1 汚濁負荷量および下水量······················································· 251
11.2 下水道施設への影響
11.3 環境への影響······························································· 258

11.4 社会経済への影響

第１２章 総括························································ 253··························································· 260···································································· 261

参考資料
参考資料 1 住民説明会配布資料 ······················································ A-1
参考資料 2 ディスポーザー使用状況のアンケート調査票 ································ A-2
参考資料 3 ごみ量・ごみ質調査関連のデータ一覧 ······································ A-3
参考資料 4 排水設備（排水管勾配調査） ·············································· A-4
参考資料 5 管渠内堆積物量調査結果 ·················································· A-5
参考資料 6 管渠ＴＶカメラ映像一覧 ·················································· A-6
参考資料 7 管渠勾配と堆積物量解析一覧 ·············································· A-7
参考資料 8 町民生活への影響に関するアンケート調査票及び集計結果 ···················· A-8