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Ⅰ General Information

on Seoul

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Seoul

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http://www.google.co.kr/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0ahUKEwib-a3phZXWAhXGxrwKHUO_D9UQjRwIBw&url=http://start.goodtime.co.kr/category/life/&psig=AFQjCNGrElSLDAuvAlD5qHOiZDCKCFoLKA&ust=1504941369366462

Area : 605 km2

Population : 10.44 million persons

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http://www.google.co.kr/url?sa=i&rct=j&q=&esrc=s&source=images&cd=&cad=rja&uact=8&ved=0ahUKEwir_NP-hpXWAhVExLwKHeJaBisQjRwIBw&url=http://seouldelegates.org/seoul_history/&psig=AFQjCNFO1G1BDLk-Mt3VP_WW2ox4BL3bWQ&ust=1504941693469874

Ⅱ Overview of

Waste Management

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42,000 tons per day

Hazardous Waste 1%

Domestic Waste

5% Discharge Facility Waste

22%

Construction Waste 72%

Other Waste 7%

Food Waste 8%

Recyclable 7%

< Domestic Waste >

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1978 ~ 1993 Nanjido Landfill Sites

1993 ~ Present Sudogwon Landfill Sites

1995 Pay-as-you-throw Scheme

1996 Incinerators Yangcheon(1996), Nowon(1997), Gangnam(2001) Mapo(2005), Eunpyeong(2009)

2005 Ban on food waste landfill

2013 Ban on FWL discharge to the sea

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Ⅲ Food Waste

Policies

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3,447 3,382 3,347 3,311 3,070

3,181 3,166 3,075 2,852

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500

1,000

1,500

2,000

2,500

3,000

3,500

4,000

2009 2010 2011 2012 2013 2014 2015 2016 2017.11

(tons/day)

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Single Housing

Number : 2.6 million

Multi-family Housing

Number : 1.6million

Small Restaurants

Number : 100,000

900tons/day 840tons/day 640tons/day

Pre-paid Bags

Bins RFID

Commercial Sites with Large Amounts of Waste

Number : 10,000

Bins

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Category Total Dongdaemun Songpa Gangdong Dobong Seodaemun

Capacity (tons/day)

1,160 110 280 360 110 300

Solids

Biogas

Animal Feed Compost

FWL Biogas Biogas

(Sewage Treatment Plants)

- Five public food waste treatment plants in Seoul are responsible for 38% of the total food waste disposal.

※ gas : to remove odor, dry solids and heat digesters

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- 35 private plants located outside Seoul are responsible for 62% of the total food waste disposal. (Compost and animal feed)

Category Total

Inside Seoul Outside Seoul

Sewage Treatment Plants Songpa

Sudogwon Landfill

Jungnang Nanji Seonam Leachate FWL

Capacity (tons/day)

1,450 270 230 170 240 340 200

FWL Biogas

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※ gas : to generate power, remove odor and heat digesters

※ Seonam : 300 tons/day (2016 ~ 2022) Gangdong : 270 tons/day (2013 ~ 2022)

Ⅳ Other Food Waste

Disposal

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Ⅳ. Other Food Waste Disposal

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Insert

Shred

Recover

Discharge

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Cutter/ transpoter

Solid-liquid seperator

Resource recovery machine

1) Dryer 2) Shredder & Dryer 3) Microorganism Fermentor

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Ⅳ. Other Food Waste Disposal

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1) Shredder & Dehydrator 2) Dryer 3) Dryer (lifter) 4) Microorganism Fermentation & Dissipation

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Ⅳ. Other Food Waste Disposal

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1) Compost Bins

2) Compost at Weekend Farms

3) Compost Equipment

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Ⅳ. Other Food Waste Disposal

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Discharge(household)

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Collection by vehicles

Compost Crop cultivation

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Put Sawdust Add Microorganism Put Raw Food Waste Stir

Egg : 3 days

Larva : 15 days

Pupa : 13 days

Imago : 7 days

lifecycle (38 days)

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Ⅳ. Other Food Waste Disposal

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Ⅳ. Other Food Waste Disposal

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