Nikkan Tokushu has been doing business in the environmental industry in Japan for over 30 years. We are engaged in the treatment of household and industrial wastes and the design, installation, and management of circulation systems. Nowadays we are also involved in the collection and transportation of wastes, taking care of wastes from discharge to treatment. Our other projects include the design, installation, and management of sewage treatment facilities, night soil treatment plants, waste incineration plants, and other systems. We will actively provide Nikkan Tokushu technologies for overseas markets. Please feel free to contact us with any inquiries.

Nikkan Tokushu Business Lineup

Providing optimal solutions in response to various needs for water treatment, proposing next-generation eco-friendly city models to build a recycling society in which resources are utilized, and creating affluent and comfortable living environments

UMEDA PROCESSOR (Sludge Reduction and Biomass Creation)


Acquired a Construction Technology Examination Certificate with Nikkan’s patent sewage technology!

  • Sludge discharge



  • Running costs



  • Water content




Can be installed on an existing sludge disposal line.

Reduces sludge volume by half, and doubles biomass energy.
The UMEDA PROCESSOR (high-speed rotating disk) crushes cell membranes of microorganisms in sludge and extracts proteins, carbohydrates, fats, CO2, and H2O to improve dehydration efficiency. This helps reduce the amount of solid materials to be transferred.
Use of the equipment can improve the digestion efficiency of a digester tank from the conventional rate of 40% to 60–80%. This enables an increased amount of digestion gas generated in the digester tank, thereby allowing a highly efficient supply of energy. The equipment is used in food manufacturing facilities. Furthermore, it can withstand continuous operation by crushing a large amount of microalgae. The UMEDA PROCESSOR is characterized by its low technology use, low cost, and high quality.

Merits of introducing the UMEDA PROCESSOR

Comparison of digestion efficiencies of the digester tank in the facility
  • Existing facility
    40 %
  • After introducing the UMEDA PROCESSOR
    Largest 80 %

Compared with the rates for the existing facility before the UMEDA PROCESSOR was introduced, the equipment can improve dehydration efficiency, reduce water content and the quantity of solid cakes to be transferred, and increase the digestion efficiency of the digester tank from the conventional rate of 40% to 60–80%.

  • MERIT 1 Increases water
    content in the
    dehydration process.
  • MERIT 2 Reduces transferred
    sludge by half.
  • MERIT 3 Shortens the digestion
    reaction period by half.
  • MERIT 4 Can be installed
    on an existing
    sludge disposal line.
  • MERIT 5 Minimizes the sludge
    volume in the facility.
  • 94%

    Water content in
    concentrated sludge

  • Min.

    Reaction speed in
    digester tank

  • Max.

    Water content in
    dehydrated cakes

  • Max.

    Water content in
    drying process

  • 4%

    Water content in
    incineration process

An increased amount of digestion gas generated in the digester tank enables a stable and highly efficient supply of gas with high calorific value, which can be effectively used as local biomass energy.

Wastewater Treatment Facility

Wastewater Treatment Facility
Eliminates personnel for operation and maintenance at the facility. Next-generation advanced treatment system to achieve zero emissions by reducing the volume of sludge and collecting biomass energy. Uses low technology at low cost and provides high quality.

Confluent Sewerage Treatment System for Water Quality Improvement

Confluent Sewerage Treatment System for Water Quality Improvement
Reduces the equipment footprint and improves maintenance quality at the sewerage treatment facility where wastewater and rainwater are treated at the same time. The treatment capacity is equivalent to that of five or more conventional sedimentation tanks.

Sewage Treatment Facility

Sewage Treatment Facility
Adopts an ICT-based remote control system. Aims to reduce operating costs and provide convenient and intelligent control for the sewage treatment facility.

Renewable Energy

Renewable energy
Produces new energy without CO2 emissions. Prevents climate change by reducing greenhouse gas emissions and the risk of global disasters.

Water Treatment & Membrane Separation System

Membrane separation
Treats water with innovative technology. Separates water and sludge to release clean water to rivers and seas. Treated water can be recycled. Provides easy operation and maintenance.

Urban Development Business (Smart House)

Urban Development Business (Smart House)
Efficiently controls the transmission and receiving of power with ICT between electricity producers and users. Maintains security and prevents disasters with ICT. Develops practical smart cities. Aims to generate renewable energy only (100% renewable energy). Uses solar, wind, and biomass power generation systems, geothermal and earth thermal heat pump systems, and the heat of hot spring water from 1,500 meters underground. Utilizes energy-saving construction and other materials and adopts heat insulating paints, dry mist, etc. for smart houses.

Real-estate Development Business

Real-estate Development Business
Promises houses and living environments that will shine forever like the North Star.

Welfare Business

Welfare Business
Provides environments like one’s own home so that people can lead liberated and healthy lifestyles every day.

Funeral Service

Funeral Service
Tottori Chubu Furusato Saijo, funeral hall built in a quiet and peaceful area, providing a place for the end of life.

Company Outline

Company Name Nikkan Tokushu Co., Ltd.
Established August 6, 1988
Capital 40,000,000 yen
Accounting period July
Executives President Yuichi Umeda
No. of employees 80 employees (100 group employees)
Headquarters Nikkan Building,
7-1 Yamanota-higashi-machi,
Shimonoseki City,
Yamaguchi Prefecture 751-0834,
Tel: +81-(0)83-253-7797