Yoichi MIURA
2023/8/23

50th Year of ASEAN-Japan Friendship & Cooperation

Japan’s Proposed New Initiatives◼ Outline of the ProjectCountry/region

Luang Prabang City, Luang Prabang Province, LPDR

PurposeJapan's johkasou technology will be introduced to realize advanced domestic wastewater
treatment by removing BOD and ammonia, contributing to the improvement of the water
environment and the conservation of tourism resources in Luang Prabang City.

Implementation content••••

Confirmation of water environment improvement effect through demonstrating thetreatment performance of advanced johkasouExamination of johkasou introduction method and maintenance technology suitable for
inflow wastewater characteristics in Lao.
Examination of regulations and systems necessary for introducing johkasou
Building a johkasou business model that suits the actual situation in Laos

Technology Advanced johkasou technology
Expected effect••Improved environmental sanitation and water environment will contribute for sustaining
tourism resources in the World Heritage City through high-quality wastewater treatmentusing Japanese Advanced Johkasou System.
Johkasou business model that integrates “EPC + OM” will be introduced to Lao1

50th Year of ASEAN-Japan Friendship & Cooperation

Japan’s Proposed New Initiatives
Advanced Johkasou System⚫ Treatment process：Sedimentation anaerobic filter moving bed

Johkasou technology adopted in the Project
Anaerobic filter⚫ Treatment performance：⚫ Feature：✓ complies with ammonia regulations in ASEAN countries✓ High performance with less space✓ Long life design with excellent durability✓ Easy to maintenance✓ Energy-saving design, 50% reduction in electricity consumption
compared to conventional type

⚫ Flow sheet：

Medium in Moving
Bed Chamber2

50th Year of ASEAN-Japan Friendship & Cooperation

Japan’s Proposed New Initiatives
Targets of Client (Buildings)

Representatives of National Effluent Standards- No.0832/2017/MONRE WaterParameter

How to control water pollution?
➢ LPB is rapidly urbanizing.
➢ Restricted Effluent Standards areapplied to Large size buildings.

Ex. of Building TypeA

Maximum permit for each type
B
C
DEUnitpH

5.5-8.5

5.5-8.5

5.5-8.5

5.5-8.5

5.5-8.5

－

BOD5

2030

405060mg/L

TSS

30

40505060mg/L

TKN

35354040－mg/L

FOG

20202020100mg/L

Building SizeABCondominium

500 rooms or more

100 rooms but not more than 500 rooms

Hotel

200 rooms or more

60 rooms but not more than 200 rooms

Hospital

30 beds or more

10 beds but not more than 30 beds

School, Academic, institute
Office25,000 m2 or more
55,000 m2 or more

5,000 m2 but not more than 25,000 m2
10,000 m2 but not more than 55,000 m2

Commercial Center

25,000 m2 or more

5,000 m2 but not more than 25,000 m2

Restaurant, Food center

2,500 m2 or more

500 m2 but not more than 2,500 m2

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50th Year of ASEAN-Japan Friendship & Cooperation

Japan’s Proposed New Initiatives
Installation and Start-up

Santiphap High School and Dormitory
UnloadingSupporting

Backfilling

PipingSlab casting

Control box

Installation

Overall viewSupporting

Stormwater drain

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50th Year of ASEAN-Japan Friendship & Cooperation

Japan’s Proposed New Initiatives
Inspection and Treatment Efficiency

Effluent (Transparency: more than 50cm）

550th Year of ASEAN-Japan Friendship & Cooperation

Japan’s Proposed New Initiatives
Experience in Japan➢ More than 1,000 plants of household,school, public office, etc. are operated.
➢ Nasu Create is working with localcommunities as an essential service
provider in wastewater management.

Acknowledgment in Lao➢ Nasu Create believes that our Japanese
excellent technology will be aware bypractice as community-based businesssince wastewater management service
has developed through working together
with local communities.
Johkasou System operated by Nasu Create (in Japan)

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50th Year of ASEAN-Japan Friendship & Cooperation

Japan’s Proposed New Initiatives
Track Records in Vietnam
With the cooperation of developer, Nasu Create is engaged in EPC business of Advanced Johkasou System mainly
in industrial parks, apartment complexes and commercial facilities in Vietnam, among developing countries.
In 2016, Nasu Create Viet established the office and invested in a local subsidiary in Vietnam.
YearLocation

Type of Buildings

Treatment Capacity

2016

Bac Ninh Industrial Park

Factory

100 m3/day

2017

Bà Rịa-Vũng Tàu

Commercial

100 m3/day

2019

Hai Phong CityApartment Complex

100 m3/day

2019

Ho Chi Minh City

Vocational School

80 m3/day

Underground installation

Outdoor installation

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50th Year of ASEAN-Japan Friendship & Cooperation

Japan’s Proposed New Initiatives

Green and Clean in Luang Prabang
Water Environment Improvement Project will
provide many knowhows accordant with local
requirement in Lao.

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50th Year of ASEAN-Japan Friendship & Cooperation

Japan’s Proposed New Initiatives
Present Operation of Johkasou – LPB Water Environment Improvement Project

Top: Separation Box
Bottom: Moving Bed Chamber(left: before desludging) (right: after desludging)

Moving Bed Chamber

Sedimentation Chamber

Anaerobic Chamber

Effluent TroughMoving Bed Chamber

Effluent(Transparency: more than 50cm）

950th Year of ASEAN-Japan Friendship & Cooperation

Japan’s Proposed New Initiatives

http://nasucreate.com/oversea/

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