WATER ENVIRONMENT IMPROVEMENTPROJECT TO IMPLEMENT SUSTAINABLE
RESOURCE RECYCLE SYSTEM BYMIKUNIYA CORPORATIONKAWASAKI, JAPANJanuary 31, 2024

Welcome to Japan!
MIKUNIYA’s corporate mascot, Mr. Mick1

COMPANY PROFILE: MIKUNIYA CORPORATION●Head Office:1-403-305-17F Kosugicho
Nakaharaku, Kawasaki City,
KANAGAWA JAPAN●Founded:
16 October 1985
●Employees:193● Special Note:• MIKUNIYA has opened
Ho Chi Minh City, Vietnam
Representative Officefrom March 2023.
• MIKUNIYA establishedlocal manufacturing ofEngineers/Technicians：117, Administrative staff：76
MISHIMAX (organicAs of Oct. 1, 2023
waste volume reduction●Business portfolio:system) in Vietnam and To develop risk scenarios,Costa Rica.
disaster prevention plans andmanuals as a bridging
mechanism between nature andhumanity
 To serve for infrastructure
maintenance and Environmental
Impact Assessment
 Secretariat for Setonaikai
Ecotourism Association (NPO)MIKUNIYA’s office in Japan

Setonaikai (inland-sea)
Ecotourism

The Cool List 2019
BY NATIONAL GEOGRAPHICTRAVELLER (UK)2

Organic Waste Volume Reduction System～MISHIMAX®～

Target 3.9. Environmental healthBy 2030, substantially reduce the number ofdeaths and illnesses from hazardous chemicals
and air, water and soil pollution and contamination.
Target 6.3: By 2030, improve water quality by
reducing pollution, eliminating dumping andminimizing release of hazardous chemicals andmaterials, halving the proportion of untreatedwastewater and substantially increasing recycling
and safe reuse globally

MK-50 * Reduces 50 kg per day＊MK-50 can process garbage generated byapprox. 50 households (200 persons).
Organic waste is biodegraded using
Wood Chips in the MISIMAX
fermentation tank.
Size: 176 cm (H) x 235 cm (W) x 165 cm (D)Build resilient infrastructure, promote inclusive &sustainable industrialization and foster innovation

By 2030, substantially reduce waste generation
through prevention, reduction, recycling andreuse33 Features of “MISHIMAX ® "●Technical Features

・High-temperature aerobic fermentation and decomposition
・Activates domestic bacteria (Not a special bacteria)
・Wood chips are used as carriers (A home for domestic bacteria)➡Reduces volume only in 24 hours!

Wood Chips

Fermentation and decomposition residue (output)● Accumulation offertilizer components
such as Nitrogen andPhosphorus● Mostly wood, so it can beused as a biomass fuel(3,320cal/kg), too● Mishimax technology is registered by UNIDO inline with Goal 3,6,9&12 of the SDGs (solving theproblem of waste).
● Compared to conventional sludge treatment, this system has
been certified by Kawasaki City for its effectiveness in reducing
greenhouse gas emissions.

4MISHIMAX ® biodegradation process
Mishimax reduces thevolume of organic waste
such as wastewatersludge, food waste bymore than 90% in 24H.

5Lineup from small size (50kg/day) to BIG size (1t+/day)
MK-1000

MK-50

Prototype in Costa Rica

Standard Model（50kg／day）(Price USD36,000~)

Metal Round type（1,000kg／day）(Price USD 220,000~)

6Water environment improvement projectfor public water areas by introducing organic sludge
volume reduction system in Da Nang City, Vietnam
Implementation systems(details in page 8)

Background【Japan side】- MIKUNIYA Corporation,
Kawasaki City Waterworks andSewerage Bureau, Kyoto University• In Vietnam, the majority of "organic sludge"
produced by factories and sewage treatmentprocesses is currently disposed of in landfills.
• In Da Nang City, the contamination of surrounding
rivers by leachate from the final landfill site has【Vietnam side】
become a pressing issue. Immediate action is- Da Nang University of Technology
needed as various types of waste, including sludge,
are also being dumped at the landfill site.
Location• While efforts are being made to address leachate
Da Nang, Vietnam (Da Nang
concerns at the final landfill disposal sites, theCity, famous as a seaside resort, isreduction of nitrogen load remains unresolved,an international environmentallyfriendly city, hosting APEC.)
requiring a fundamental solution.
Da Nang7Project implementation system
Goal: Develop a business model for improving the water quality of public water areas by preventing leachate
derived from organic sludge in Da Nang City, Vietnam
Japan

Vietnam

Ministry of Construction and Ministry of Natural
Resources and Environment

Ministry of the Environment
Representative company
MIKUNIYA Corporation

Cooperation/
collaboration
discussion(Project management, current situation survey, relationshipbuilding with related organizations, creation of business plan,
demonstration test and water environment improvement
effect verification, business model construction,dissemination activities)

Cooperating organization: Kawasaki
City Waterworks and Sewerage Bureau(Department of Natural Resources and Environment, Bureauof Construction, etc.)
Coordination with related organizations

Cooperating institution:
University of Science and Technology –The
University of Da Nang( DUT )(Sludge analysis, demonstration experiment support,introduction effect evaluation, dissemination activity support,inter-ministerial coordination)(Advice on water and sewerage businessmanagement, etc.)
technical support, coordination with relatedorganizations)

Cooperating institution:
Kyoto University(Advice on verification of water environment
improvement, support for dissemination activities)

Cooperating organization: Da Nang City People'sCommittee

Market research• Other municipalities around Da Nang City (landfillfinal disposal site)• Manufacturing company [ candidates formanufacturing large machines ]• Engineering company [Candidates for collaboration]• Private companies such as industrial parks and hotels• Neighboring countries (Thailand, Laos, etc.)88Water environment improvement project inVietnam (cont.)
Project outline

Expected results and businessprospects• Improvement of leachate and water• To assess and confirm the impact ofquality in public water areas throughreducing organic sludge volume andthe volume reduction of organic
utilizing biomass resources on improving
sludge and utilization of biomass
water quality (including measuring leachateresources
and the water quality of surrounding rivers,• Horizontal development in Vietnam
among other parameters) at the final landfill(such as Nha Trang, another seaside
disposal site.
resort area)• To examine the implementation of a businessmodel and assess future business development • Horizontal expansion to neighboringcountries such as Thailand and Laosto validate the effectiveness of MIKUNIYA’s
by taking advantage of the location oftechnology.
Da Nang at the entrance to the EastWest Economic Corridor
9Planned Schedule
JFY2023

JFY2024

Current Stage

Next plan Collect locally basic
information
and analyze data To confirm the proposed
product/service meet local
requirements

Feasibility Study• Gather basic information andneeds• Verify the product/service
compatibility
JFY；Fiscal Year in Japan From April to March To set up product/ service
delivery system and operationplans
 To confirm businessfeasibility and connectivity

DemonstrationSurvey• Process involves
verification anddissemination ofinnovations, products,and business models,development of businessplanJFY2025
 Build a business model,
verify the feasibility of thebusiness, and carry out
dissemination activities

BusinessDevelopment• Business andcommercialization by
joint venture with localcompany

1010

Demonstration Survey Plan
[Approach to water quality improvement effect] [Demonstration test 1: Continuous
・Aim to reduce the burden on public water areas byfeeding volume reduction test]
reducing the amount of sludge transported to final
disposal sites and reducing the amount of leachate
generated.
LandfillWaste

OrganicSludge

Mishimax®

Fertilizer

Leachate
water・Reducing leachate derived from sludge
・Analyzing and estimating water
environment improvement effects based onwater quality surveys
Reduction test ( 6 months)
Biologicalcarrier(wood chips)

Input
Sludge(every day)・Installing Mishimax® MK-50 at a sewage
treatment facility (or on farmland where theresidue is intended to be used as fertilizer)
・Condition settings (fermentation environment(temperature, humidity, air supply, etc.) andfermentation status adjustments were carriedout for one week)
・50 kg of dehydrated cake was continuously
added to MK-50 every day for 6 months.
・Measure the volume reduction rate from theweight of the residue after 1 month, 3 months,
and 6 months ⇒ Evaluate the volume reduction
effect[Evaluation method] Volume reduction rate(%) = (1-(total residue weight - carrier weight)/ total sludge input amount) x 100

High temperature aerobic
fermentation
decomposition

Retrieving
Residue

Volume reduction ratemeasurement* The local wood used for the carrier has been selected by the EnvironmentalResearch General Promotion Fund project number 4-1801 .

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Demonstration Survey Plan
[Verification test 2: Verification of residue safety and fertilizer effect]• Chemical analysis of residue (TN, TP, K, C/N, As, Pb, Hg, Cd)⇒Check thepresence of fertilizing ingredients and harmful substances• Fertilizer efficacy test for about 1 month Crops and number of cases are from Agricultural Development Special Zone
(Hoa Vang area)Decided after consultation with related parties (evaluation
scheduled for about 1 month)Standard
No fertilizer
Mishimax
fertilizer
SimilarfertilizerCommon cultivation test method in Japan(Komatsuna; Spinach Mustard)
・Germination survey:
 Count the number of germinated plants on the third day of sowing.
 Observe for any abnormal symptoms.
・Growth survey:
 Measure the leaf length of 5 individuals on the 14th and 21st days ofsowing.
 Cut out the above-ground part and measure the number and weight.
12Effects expected through the project(water environment improvement and secondary effects)• Organic sludge volume reduction technology (hereafter referred to as "this technology") by
MIKUNIYA's Mishimax can reduce the volume of organic sludge and turn it into a biomass resource,
thereby reducing the environmental impact of leachate at landfill sites (contributing to SDG Goal 3).
• Specifically, the volume reduction of organic sludge and its conversion into a biomass resource will
reduce leachate derived from organic sludge by eliminating landfill disposal at final landfill sites,
thereby reducing the discharge of organic pollutants into public waters (contributing to SDG Goal 6).
• As a secondary effect, by reducing the amount of landfill disposal, it contributes to the extension of
the life of final landfill disposal sites and the reduction of methane gas that is naturally generated
at final landfill disposal sites and released in the air (contributing to SDG Goal 12 and 13).
• It is possible to reduce treatment costs to 1/4 by reducing the volume of organic sludge by 90%.
Increase in organic sludge

Economic
growthUrbanization

All sludge to Landfill
Tightness of landfill sites

Environmental
impact of leachate

Improvement by expanding thewastewater treatment plant andincreasing the treatment capacity ofthe existing equipment with thebudget of Da Nang City

Further increase in sludge volume
due to improved wastewater
treatment efficiency

MISHIMAX・Reduced organic sludge
volume to 1/10
※The remaining sludge(residue) is turned into abiomass resource
・Reduction of leachate
generation
・ Extension of landfill life
・ Reduction of methanegas generation
・ Reduction of sludge
disposal costs
・ Creation of local
employment

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Effects expected through the project(water environment improvement and secondary effects)
Reduction of sludge volume to 1/10

About high temperature aerobic fermentation
No methane gas is
generated in thetreatment process

1: Organic waste is fed into a fermentation and decomposition tank containing woodchips and aerated.
2: Solid organic matter is sorbed into the wood chip voids, and the organic waste isfermented and decomposed into carbon dioxide (CO2), water (H2O), and ammonia(NH3) by the microorganisms that have grown in the voids in the wood chips.
3: Microorganisms are reduced by autolysis, leaving wood chip fragments andinorganic matter in the reduced organic waste.

Reducing the burden on landfill sites
Number of wastetreatment plants
in Vietnam*

Waste
treatmentplants

Landfill site

Incinerator

Composting

Secondary effect: By reducing the volume of organic
waste by 90% or more, the landfill burden is reduced,
leading to a reduction in contaminated leachate.

*Reference：https://vietbiz.jp/waste-disposal-vn/ accessed on Jan. 19, 2024

1/4 of sludge disposal cost
Case of Vietnam Southern Industrial ParkType

Before introduction(Landfill)

After
introduction

MK-P-5000 (5 t /d）28.3 mJPY/y

6.8 mJPY/y ※※Breakdown：Processing cost = 2.8 mJPY/y + Running cost =4.0 mJPY/yReference：Calculated based on the "Loteco Industrial Park
Excess Sludge Volume Reduction Demonstration Experiment"
conducted by Mikuniya Corporation.
※Estimated with dehydrated cake designated as hazardous. 1414

Summary : Sustainable Resource Recycle System by MIKUNIYA・Food wastes / Sludge after waste water treatment(moisture content 80-85%)
1,000kg per day, continuously adding for 6 months
Reduce volume oforganic waste (foodwaste, sludge)
by 90%

Enable Resource
Recycling・Getting output（organic fertilizer）

MISHIMAX® MK-1000
Reducing volume (6 months)
Input
Organic waste（Everyday）

ReduceReducesgreenhouse
Greenhouse
Gasgasemission
Emission

High-temperature
Aerobic fermentation &decomposition

OutputOrganic
fertilizer

harvestAfter consuming,
dispose as Waste

Market15

THANK YOU
VERY MUCH!
Contact

Email

Ms. Akiko Fujiwara
MIKUNIYA Corporation
Overseas Business
Development Expert

fujiwara@mikuniya.co.jp

MIKUNIYA’s corporate mascot, Mr. Mick

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