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About Meiwa Co., Ltd.

Tokyo Ishikawa

2.5hours

A technology-oriented company developing environmental plants

Year of Incorporation: 1965 Number of staff: About 50 Location: Kanazawa City, Ishikawa Prefecture, Japan

Main business area: Environment / Agriculture / Renewable energy Main products: Biomass carbonization plant / Effluent treatment facility / Methane fermentation system / Dust collector, etc. Project partners: University of Tokyo, JICA, Ministry of Environment, etc.

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Biomass Carbonization - General

A plant that can convert biomass into charcoal (biochar).

Sludge

Food waste

Agricultural residue

Scrap wood

Carbonization plant

Water hyacinth etc.

Residual biomass Biochar

Waste management Agriculture / Environment / Energy

Soil conditioner

Natural fertilizer

Fuel

Sludge

Kitchen garbage

Water hyacinth

Agricultural residue

Animal waste

etc.

Residual biomass Carbonization plant Biochar (+wood vinegar)

Waste management Agriculture Energy Environment

• Patented • Energy- and cost-efficient • Wide range of processable ingredients

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Biochar – as fuel

Smokeless, no tree cutting, carbon neutral

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Soil microbial activity

Water retention

Nutrient (N, P, K, etc.)

Nutrient retention

Nutrient assistance

Repellent

Ideal for agriculture

Carbonization

Wood vinegar =organic acid

Biochar =porous

→Drought resilient

Cattle disease control

Biochar – as powerful soil conditioner

→ Health?

→ Livestock?

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Crop: Potato Soil: Sandy Location: Ishikawa Prefecture, Japan Conditions: Following common practice (chemical fertilizer was already applied beforehand)

With biochar amendment Without biochar amendment

*Pictures are referential purpose only.

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Biochar – voice from farmers

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First biochar example in Meru?

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Carbon box series: batch-type carbonizer

Dried biomass

in

Strategically downgraded • Simple to use • Patented • Quick (2-3days => 8hours) • Energy efficient • Smokeless • Solar powered *Pre-drying required

Fuel In

Biochar out

Deployable anywhere

Biomass carbonization – mechanism

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Where to apply?

Waste separation at landfill = unrealistic

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(Possible application for Western Kenya)

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Work in progress in Meru

Organic waste collection & screening Pre-processing (drying, briquetting, shredding, etc.)

Carbonization Agricultural experiment with Biochar and wood vinegar

(Post-processing)

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Organic waste collection

Raw material screening

Pre-processing (e.g. Drying, shredding, briquetting)

Carbonization

Biochar Wood vinegar

Agriculture Clean fuel Livestock? Repellent?

Distributors End users

Distributors End users

Distributors End users

Distributors End users

• What are major sources of raw material?

• Waste separation at source? Any incentive?

• Pollutants (heavy metals, plastics, etc.) to be avoided

• Simple and optimized methods/systems in Kenya?

Analysis, R&D, test marketing etc. to be done with partners

Key to success = various partners

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Organic waste collection

Raw material screening

Pre-processing (e.g. Drying, shredding, briquetting)

Carbonization

Biochar Wood vinegar

Agriculture Clean fuel Livestock? Repellent?

Distributors End users

Distributors End users

Distributors End users

Distributors End users

Analysis, R&D, test marketing etc. to be done with partners

• What are major sources of raw material?

• Waste separation at source? Any incentive?

• Pollutants (heavy metals, plastics, etc.) to be avoided

• Simple and optimized methods/systems in Kenya?

Key to success = various partners

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Linkage with SDGs Website dedicated to SDGs

http://meiwa-ind.co.jp/en/achieving-sdgs/

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Example 2: Combating desertification

Example 1: Climate-resilient agriculture

SDGs特設ページを新設： http://www.meiwa-ind.co.jp/en/achieving-sdgs/

Linkage with SDGs Possible interpretations

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More SDG ideas coming up…

・Woman/community empowerment？ ・Poverty alleviation? ・Involving youths? ・Technology transfer?

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Rippling strategy as a Japanese SME

Meiwa Main role: Project formulation with partners, R&D, Technical transfer, Export of core parts

Local business partner Project formulation with Meiwa, Marketing, Plant operation, Local production, Maintenance, (biochar distribution)

Project owner Plant operation, biochar distribution (incl. outsourcing)

Beneficiaries / microbusiness owners of biochar distribution

Local partners are the key for the sustainable growth

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Meiwa

Local government

Local private partner

Farmers

Revenue from biochar sales

Case study in Japan - for human sludge

Human sludge processing (incl. machine operation)

Plant operation Biochar distribution

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Carbonization kiln

Waste heat from carbonization unit

Biochar storage

Stirring

Dried ingredient from drying unit

Wet ingredient input

Drying by sunlight

Drying unit Carbonization unit

Green house etc. Secondary combustion

Biomass carbonization – mechanism

Carbon hero series: continuous-type carbonizer