Business highlights

for medium- to long-term growthManagement and Operations Overview

Promoting development of products and solutions
The METAWATER Group is working on solutions for a new generation, integrating our Group's strengths in mechanical and electrical
technologies, joint research, open innovation with partners, etc., with the goal of more advanced technological development thatwill help sustain infrastructure and improve operational efficiency.
New technologies

Recycling technology

Water environment controller "ZLS"

Vertical high-speed crusher

Achieving the high level of availability and environmental resistance required forwater environments

We developed a vertical high-speed crusher that crushes incombustible andbulky waste down to a particle size that can be easily recycled

We have developed "ZLS", a controller for water environments that supports the optimization ofoperation, maintenance, and engineering of ever-more advanced and ever-more complicated waterand sewage facilities.
"ZLS" has improved specifications from previous models, including an increased CPU processing
speed, reduced instruction execution time, and increased program capacity. It also has applicationcompatibility and allows for smooth inheritance of program libraries when updating the water
environment control system.

With the enforcement of the Act on Recycling of Specified
Kinds of Home Appliances, home appliances must berecycled by manufacturers. Large household appliances,which traditionally had been crushed and sorted at bulk
garbage treatment facilities, are no longer collected.
Crushers suited to the treated materials are desired, andso we have developed a resource recycling facility that
efficiently recycles waste with saving space.

■ Sorting mechanism
SpoutInsertion
port

BreakerZLS

Comparison with conventional horizontal
equipmentDownsized for reduced installation volume
Large bulk specific gravity of the crushed material,
increasing transportation efficiency● Reduced motor capacity due to downsizing● Reduced maintenance costs

CasingRing grinderSweeper●●New technologies

High performance digester mixer

Technological quality and performance evaluated as contributing to environmental
preservation and promotion of the environmental equipment industry
We developed a sludge digestion system* that stably generates combustible gas by installing four
paddle vanes in the sewage sludge digester and a radial blade at the bottom of the tank, generatinga circulated flow in the tank and allowing methane fermentation to be carried out efficiently.
The combustible gas is used by gas turbines, etc., to generate power, contributing to reduced
maintenance and management costs for treatment plants, reduced LCC, etc.
This technology won the Chairman's Award at the 45th Outstanding Environmental Systems
Awards hosted by the Japan Society of Industrial Machinery Manufacturers.

AI / ICT

Mixer model

Cutting-edge technology initiatives

Emergency ceramic membrane filtration system

Trial use of drones for facility inspection

Image recognition technology utilizing AI

We have been conducting surveys and research regarding the use ofdrones for maintenance, etc., of water supply and sewage infrastructure(water sources, pipelines, pipeline facilities, facilities at water treatment
plants, facilities at sewage treatment plants, discharge rivers, etc.).
We will be holding demonstration experiments to see if drones can beused to perform operations that had previously required people to enter
hazardous areas directly.

We have built a system that can frame and detect equipment and objects
necessary for ensuring safety at construction and maintenance sites.

Utilizing a ceramic membrane, one of our flagship technologies

Helmet not being worn

Recognize if helmets
are being worn or not,manage workplacesafetyI nvestigating and measuring
the conditions of various water
sources and discharge rivers● Diagnosing deterioration and aging
of facilities● A erial survey of facilities onhigh ground●Prototype unit

METAWATER REPORT 2019

Helmet being worn

Example demonstration
experiments

We decided to develop a portable emergency ceramic membrane filtration system, and so we createda prototype.
This system uses the know-how cultivated through the engineering of the in-vehicle ceramic
membrane filtration equipment supplied to Africa and Southeast Asia to improve both usability andportability in the event of an emergency or disaster. In addition to lending these free of charge tolocal governments, we are planning to also deploy them at our domestic bases so that we can flexibly
lend them to others in an emergency.

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Vertical high-speed crusher

Utilizing cutting-edge technology to respond to an era of population decline,
contributing to securing the labor force and improving safety and productivity*Jointly developed with Satake Chemical Equipment Mfg., Ltd.

New technologies

Discharge port

Monitoring for intrusion into hazardous areas

METAWATER REPORT 201924

Business highlights

Management and Operations Overview

B-DASH Project*1Development technology*1 Innovative sewage system technology demonstration project sponsored by MLIT

ICT technology

Water technologies(FY2018 B-DASH Project)

Demonstration research of continued stock management realization system technology in a cloud environment with maintenance data as original sources

LED UV irradiation equipmentSupporting the establishment ofeffective stock management amid
the ever-increasing number of aging facilities

Long service life with reduced maintenance costs
Organization/Storage

Collection

Demonstration coverage
1 Source data collection/organization system

We have demonstrated that continuous stock management canbe achieved through an ICT platform and cloud system that makes
it possible to effectively collect, organize, store, and use themaintenance data generated in day-to-day operations.
Demonstrators: Joint research group organized by METAWATER Co., Ltd.,
Ikeda municipal government, Ena municipal governmentDemonstration areas: Sewage Treatment Plant in Ikeda City, Osaka,
Water Purification Center in Ena City, Gifu, and five other facilities
Demonstration years: FY2018 - FY2019

Use

Use

Cloud server
System registry Library

Achieving effective
and continuous
stock management

Organization/
Storage

Uniquecode

Collection
Regularinspection

ReportingSpecial
Repair failures Investigationetc

2 Real-time evaluation and3 Performance degradation

visualization systemsimulation

Evaluation items

Current

Facility A
Facility B
Facility CNew

Degree ofsoundness Past

Expanded view

Present43

Evaluation of degree of soundness
Preparation of stock
management plan

Actual size

Degradation prediction model, etc.
5Treatment equipment, etc.

Planned sewage volume:approx. 50,000 m3 a day

In addition to adopting the world's highest rated high-power UV-LED as a lightsource, a lifespan approx. 3x that of ultraviolet mercury lamps has been achievedby controlling UV-LED output, optimizing irradiation, etc. The 300 m3/day and 1,200 m3/day
water treatment volume models developed so far have received the Certificateof the JWRC Standard Conformity of Ultraviolet Irradiation System by the Japan
Water Research Center (JWRC).

Futureprojection
Available data

2

Also takes into account factors
1that degrade functionality

Time

UV-LED package■ Characteristics of this technology

External appearance of equipment (MWLED series)

1 Source data collection and organization system

Efficiently collect, organize, and store various types of maintenance data at various locations through centralized management

Sewage technology

2 Real-time evaluation and visualization system

The system allows continued evaluation and visualization of the level of soundness based on collected and organized maintenance data

Low pressure loss membrane diffuser (cloth diffuser)

3 Performance degradation simulation

Create models predicting long-term changes in equipment operating performance and introduce a probabilistic distribution for future
equipment performance to help determine optimal timing of measures

With the above three component technologies formed in a cloud environment, maintenance data generated through day-to-day operations are used to prepare various plans, thereby
achieving effective and continued stock management.

Sewage technology(FY2019 B-DASH Project)

Demonstration research for advanced treatment technology through ICT and AI control of single tank nitrification and denitrification process

Realizing short HRT advanced processing, reduced energy use, and reduced maintenance burden
Integrated calculation control system

Single tank nitrification and denitrification process

Automatically calculates required air volume for reaction tank andoptimum blower discharge pressure based on sensor information(corresponding to load and seasonal fluctuations)

Stable air volume control in accordance with load fluctuations
allows for treated water quality equivalent to the A2O methodwith short HRT (anaerobic parts installed for phosphorus removal)

Waterquality sensor

Remotemonitoring

A cylindrical diffuser made of stretchable fibers that generates fine bubbles fromnumerous gaps in the texture, reducing the amount of air by increasing oxygen
transfer efficiency. Since it is a low-pressure-loss type, blower discharge pressure
can be kept low, reducing power costs. Additionally, replacing just the diffuser itself
is simple and it has excellent maintainability.

■ Air diffusion system
Stretches
Does not stretch

This technology achieves a treated water quality equivalent to
the A 2O method with short HRT by controlling the air volume
corresponding to fluctuations in the reaction tank inflow load. At
the same time, by using ICT and AI for integrated management, theoptimal discharge pressure for the blower is calculated from therequired air volume in real-time, and the discharge power is reducedby controlling the discharge pressure.

Diverse operation by enabling intermittent operationSludge
Demonstrators: Joint research group organized by METAWATER Co., Ltd.,
Japan Sewage Works Agency, and Machida City
Demonstration areas: Naruse Clean Center (Machida City, Tokyo)
Demonstration years: FY2019 onward

Load fluctuation
following blower unitControls discharge pressure,stably and economicallysupplying air

Anaerobic

Aerobic(Anoxic)

Cloth diffuser

Whengenerating
bubbles

Bubbles

Aerobic

Photo of the bubbles

Cloth diffuser (during aeration)
Pressure gauge

Air flow
control valve

Promoting basic research on ceramic membranes with universities■ Characteristics of this technology
Realization of short HRT (retention time) through air

Flexible formation of aerobic and anoxic zones in accordance with loads using ICT*2

Realization of equipment cooperation through the utilization ofCalculating the optimal blower discharge pressure from the required air volume in real-time,the discharge pressure is controlled

Realization of reduced operation adjustment burden by

Control parameters for required air volume calculations are automaticallytuned using AI (machine learning functions)

1 volume control using ICT

2 ICT and reduced blowing power through pressure optimization
3 responding to seasonal fluctuations, etc., using AI

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METAWATER REPORT 2019*2 NOx and NH4 meters are used in this technology

In order to suppress membrane fouling (clogging) associated with the continued
use of ceramic membranes, we are conducting basic research on the introduction
positioning relationship between coagulation, which is the pre-treatment, andozone treatment, as well as on removability of biopolymers* 3. For this research
we received the Encouraging Prize in 2017 from the Society of Environmental
Instrumentation Control and Automation together with our joint search partner,
Gifu University.
*3 It has been suggested that these substances are involved in membrane fouling.

Award ceremony

Ceramic membrane

METAWATER REPORT 201926