Waste water treatment and sludge treatment solutions

Mechanisms of waste water treatment and sludge treatment solutions

We design, manufacture, install, service and maintain machines and equipment, such as air diffusion systems, sludge dehydrators, sludge incinerators and high-speed rainwater treatment systems, as well as electric equipment such as power receiving and transformation equipment, monitoring and control equipment and instrumentation for operating wastewater treatment plants. In addition, we are engaged in energy-related technologies in the water environment field, such as systems used for the gasification of and generating of fuel from wastewater sludge.

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Wastewater treatment flow

B-DASH-adopted technology (2015)

RTN technology (real-time rainfall information network technology)

Reduces the damage caused by flooding in cases of localized torrential rain

  • Sophisticated, high-precision prediction of rainwater outflow
  • Protects the town from localized torrential rain
  • Reduction in power consumption for wastewater management

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Primary sedimentation tank

Super high-efficiency solid-liquid separation technology (high-speed filtration)

From sedimentation to filtration
Improvement in treatment capacity by using an alternative to the primary sedimentation tank

    • Increases the amount of treated water without adding civil engineering frameworks to reduce construction costs
    • Construction costs reduced because of the space-saving construction
    • Being a system designed for all weather conditions, no additional construction of facilities is required for rainy weather
    • Able to efficiently recover crude sludge

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Aeration tank

Fine-bubble-type air diffusion system

Significantly reduces the aeration air flow

  • Highest level of oxygen transfer efficiency
  • Maintainability-free
  • Blower power reduced in comparison with the conventional type by 20-30%

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Anaerobic single-tank nitrification/denitrification process

Realizes energy saving and improvement in treated water quality

  • Achieves same level of treated water quality as is achieved by sophisticated treatment
  • Realizes energy saving through the optimal control of aeration air flow

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B-DASH-adopted technology (2014)

Non-aeration, circulation-type wastewater treatment technology

The same level of water quality provided by the standard method is realized with reduced energy.

  • 53% reduction in power consumption when compared with the standard activated sludge method

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B-DASH-adopted technology (2019)

Advanced treatment technology operated via control of the single tank nitrification denitrification process using ICT and AI

  • Single HRT (retention time) by means of ICT-based air flow control
  • Reduction in blower power consumption by means of ICT-based equipment cooperation and optimized pressure
  • AI-based reduction in the workloads involved in responses to seasonal variations and operational adjustments

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B-DASH-adopted technology (2017)

Technology for improving the treatment capacity of final sedimentation tanks

Quantitatively or qualitatively improves treatment capacity without additional installation

  • Construction periods and costs of construction are significantly reduced through pre-fabricated construction of the filtration unit

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Reused equipment

Water reuse system

Effective use of treated water by means of reclamation

  • Hydrophilic water standards are met through the use of ozone and ceramic membranes
  • Used as a new source of water for toilets, sprinklers, for washing, and so on.

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Cloth media filter

Track record of delivery of over 3,000 units worldwide

  • Used in the tertiary wastewater treatment process as an alternative to sand filtration
  • Space saving: the space used is 1/3 of that used with sand filtration
  • Energy saving because no large-capacity backwash pumps or blowers are required

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B-DASH-adopted technology (2013)

Cooperation and total optimization functions

Construction of innovative systems for the total optimization of dehydration, combustion and power generation

  • Optimal operation points maintained for the entire system
  • Operating conditions are automatically determined according to changes in properties
  • Minimizes maintenance costs and emission of greenhouse gases, etc. for the entire system
  • Eliminates the supplemental fuel requirement through a combination with low water content dehydration technology

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Sludge digestion equipment

JS-designated Class 1 new technology

Carrier-charged-type, high-speed methane fermentation system

Significant improvement in treatment efficiency

  • Unique carrier-charged-type digestion tank made of steel
  • 1/4 the volume when compared with conventional digestion tank

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Low-power, high-efficiency digestion system

Achieves high digestion rates using an agitator that is compatible with high concentrations

  • Maximizes reductions in sludge volumes through the use of high-concentration sludge and full digestion
  • Generates large amounts of digestion gas due to high-temperature digestion that involves high decomposition speeds
    *Application with medium-temperature digestion is also possible.

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Drying, incineration, heat recovery, and exhaust gas treatment equipment

Joint research conducted with the Bureau of Sewage, Tokyo

Low-temperature heated air dryer

The use of waste heat from the incinerator significantly reduces fuel consumption by the incinerator

  • Drying is conducted using a low-temperature heat source (450-600°C)
  • Significantly reduces running costs and the emission of greenhouse gases
  • Allows for additional installation on an existing furnace
  • Allows for the running of overload operation without changing the load handled by existing equipment

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Joint research conducted with the Bureau of Sewage, Tokyo

JS-designated Class 2 new technology

Multi-layer fluidized incinerator

Simultaneous reduction of fuel consumption and N2O

  • In addition to newly installed furnaces, it is also applicable to existing fluidized incinerators
  • Simultaneously controls the sand layer temperature and free board temperature to achieve stable operation through the use of automatic control equipment developed by means of a fusion between electrical and mechanical technologies
  • N2O reduced by approximately 50%, fuel consumption by approximately 20%
  • Realizes stable, low-excess air operation via O2 control

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Joint research conducted with the Bureau of Sewage, Tokyo

Fluidized turbine system

Power saving is achieved while keeping the system safe and secure since the system is negatively pressurized

  • Achieves power saving with turbines powered by clean air
  • Approximately 40% reduction in power consumption

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Binary power generation equipment

B-DASH-adopted technology (2013)

High-efficiency, waste-heat-based power generation technology (binary power generation with dual heat sources)

Maximizes the generation of power using waste-heat-based power generation technology with dual heat sources

  • Converts the energy of sludge into electric power
  • Recovery and utilization of low-temperature waste heat and high-temperature waste heat
  • Enables the creation of energy (power generation)

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