Conceivable applications

The Yamaha Clean Water Supply System is a water purification system using slow sand filtration which is primarily intended to provide rural residents with clean drinking water. As most rural areas are not yet connected to an electrical grid, a solar PV system is available within the same package to provide the power source.

Competitive advantage

The system has the following three advantages:

1. Low cost
   Compared to other technologies such as rapid filtration and membrane filtration, the running cost is cheaper as no coagulant or membrane filters are required.
2. Easy installation and maintenance
   We supervise local residents for installation work and train them for ongoing maintenance. The system is designed for simple installation and maintenance.
3. Duplicability
   The system is highly duplicable for rural areas, whether an electrical grid connection is available or not, as long as there is a surface water source.

Performance

Removable items

• NTU refers to the “nephelometric turbidity unit”, as determined by WHO guidelines.
• CU refers to the “color unit”, here showing the “apparent color.”
• TCU refers to the “true color unit”, as determined by WHO guidelines.

Specification

<YCW-008A>

Installation area	10 m × 8 m
Purification method	Slow sand filtration system (Physical filter + Biological filter + Chlorine disinfection)
Main components	Fiber reinforced plastic (FRP) tanks, Control panel, Filter media (Gravel, Sand), Electric pumps, Polyvinyl chloride (PVC) pipes
Total weight	Approx. 27 tons
Water purification throughput capability	Approx. 8,000 L/day
Purified water storage capacity	Approx. 3,000 L
Power supply	Single phase 220 V (AC)
Electricity consumption	Approx. 5 kWh/day
Operation time	24-hour automatic operation
Water faucet	1
Electric pumps	Four (including a raw water suction pump)
Chlorine solution supply system	Automatic (with a chlorine feeder pump)
Packing for shipment	2 x 20-foot containers (including filter media) without solar PV system 3 x 20-foot containers (including filter media) with solar PV system

 

<YCW-002A>

Installation area	4 m × 3 m
Purification method	Slow sand filtration system (Physical filter + Biological filter + Chlorine disinfection)
Main components	FRP tanks, Control panel, Filter media (Gravel, Sand), Electric pumps, PVC pipes
Total weight	Approx. 7 tons
Water purification throughput capability	Approx. 2,500 L/day
Purified water storage capacity	Approx. 600 L
Power supply	Single phase 220 V (AC)
Electricity consumption	Approx. 1.7 kWh/day
Operation time	24-hour automatic operation
Water faucet	1
Electric pumps	One (raw water suction pump)
Chlorine solution supply system	Manual (with a chlorine dispenser)
Packing for shipment	1 x 20-foot container (including filter media) without solar PV system 2 x 20-foot containers (including filter media) with solar PV system

 

Purification flow

■ Key points regarding the slow sand filtration flow
     – Water flow speed is slow (4-5 m/day)
     – Sand must be uniform size (under 1 mm)

 

Technical maturity / Past record of introduction

The system has been sold since 2003. To date, 16 units have been installed in Asia and 27 units in Africa. In Ethiopia, the company installed 1 facility in the project organized by UNIDO Headquarter. 

 

Conceivable risk

Technical risk: The quality of purified water could fluctuate and accidentally deteriorate due to weather conditions.
Security risk: There is a risk of theft of the high-cost solar panels and water pumps.

To mitigate the risks mentioned above, we train local users and residents to continuously monitor weather conditions and regarding how to implement theft prevention measures.

Name	Yamaha Motor Co., Ltd.
Address	2500 Shingai, Iwata-shi, Shizuoka-ken, Japan
Capital	Yamaha: JPY 85,797 million (as of March 31, 2018)
Contact person	Mr. Masashi KANEMARU Group Manager Clean Water Project Group Business Promotion Division Overseas Market Development Operation Business Unit Tel.: +81-538-37-1717 Fax.: +81-538-37-1954 E-mail: kanemarum@yamaha-motor.co.jp URL (further information): https://global.yamaha-motor.com/business/cw/
Number of employees	Consolidated: 53,977 Parent: 10,614   (as of December 31, 2018)
Date of company foundation	July 1, 1955
The type of business	Manufacturing and sales of equipment for ground, maritime and aerial transportation and engines, and environmental equipment.

Modality of business transaction

Partnership
We firstly conduct an extensive study regarding technology transfer of our Clean Water Supply System and aim to build up specific technology transfer knowhow.

Export of product
We procure necessary equipment for exporting to the destination country. This equipment includes FRP tanks, a control panel, filter media (gravels and sands), electric pumps, and PVC pipes.

Schematic illustration of the technology

 Business concept and anticipated benefits

 A dependable clean water supply delivers significant improvements to lifestyles

The Yamaha Clean Water Supply System converts river or holding pond water into clean water. Access to clean water is known to improve sanitation and reduce the occurrence of ailments such as diarrhea and fever. Easy clean water access also saves time and labor involved in fetching daily household water from a well, pond, or river. Time can therefore be spent more productively on work or study. A clean water source can also change people’s lives in other ways, helping to create new business opportunities for the community such as water delivery services, cleaning, and ice-making. Forming a committee to manage the water supply system can also promote self-government and self-reliance functions in the community.