Possible applications

【Illustration of the activated charcoal technology】

Fig. 1 Features of rice husk activated charcoal

Fig. 2 Pore size distribution of activated charcoal

Activated carbon from rice husk consisting of micro-pores, meso-pores and macro-pores possesses remarkable adsorption capacity.
Compared with conventional activated carbon, meso-pores in activated carbon made from rice husk has an outstanding adsorption function of harmful substances with large molecular structures, such as 2-MIB, DBS, MEP, TPN and CAT.

Activated carbon made form coconut shell is famous in a current water purifier market. Only our company sells “Welvina” high performance water purifier with activated carbon made from rice husk. Compared with other activated charcoal from competitors, we take advantages of comprehensive adsorption capacity and uniqueness in the current market. (see Fig. 1)

The expected application of Welvina in developing countries as follows;

① “Welvina” can meet the demands for high removal performance against various impurities and endurance to filter clogging in developing countries.

② The improved health and food sanitation is in demand in developing countries recently. Welvina excels water purifiers with activated carbon filter made from coconut shell in the removal rate of impurities in water. In addition, Weivina has more amount of silica components in purified water. Silica is important essential minerals for your skin, hair and body.

③ By taking dissolved silica, we can expect the effect of enhanced inherent self-healing and support for immune system, which leads to the prevention of the infections caused by bacteria and viruses.

④ Various data management of water flow and relevant information is supported by conformity of TRM-03B to IOT. Collected informatization leads to improvements in the workplace environment and operational efficiency at the industrial level.

⑤ The 100% of water filtered with Welvina can be used for drinking. Welvina has an advantage in terms of resource saving. On the other hand, RO water purifier cannot be used for drinking due to its characteristics.

⑥ QCVN01-1:2018/BYT is a standard for clean water quality for drinking water in Vietnam. “Welvina” has acquired QCVN06-1:2010/BYT that conforms to the quality standard.

Competitive advantage

The filter cartridge adopts activated carbon made from rice husk which contains micropores, mesopores and macropores that can absorb and adhere minute substances.
Activated carbon made from rice husk is superior to coconut shell type with regard to the comprehensive adsorption capacity due to the difference of its pore distribution with broad size of pore (micropores, mesopores and macropores) and pore volume.
“Welvina” meets the demands for high removal rate against various impurities, and endurance against filter clogging in developing countries.
Activated carbon made from rice husk is capable of removing 99% of germs, which is much superior to the removal performance of general activated carbon.
It has been also found that activated carbon from rice husk can remove germs as well as E. coli, caries, influenza and bacteriophage M2 viruses.
It is necessary to increase the number of filters for each function in the conventional build-in type water purifier. “TRM-03B” high performance filter combines all functions. It allows the maintenance and filter exchange to be done easily.

Performance

Table 1 Comparison of activated charcoal made from rice husk/coconut shell

Table 2 Experimental result for removal of germs

Fig. 3 Experimental result for removal of E. coli and Streptococcus mutans

Pitcher-type: you can drink tasty water easily. It can be easily fitted in a refrigerator.

Model: TRM-01P

Device size: (W)175 mm×(L)85 mm×(H)235 mm

Capacity: purified water 1 L, tap water 1 L

Capacity of filtration flow: 0.2 L/min

Cartridge replacement: Approximately 3 months (when using 4 L/day) or Approximately 6 months (when using 2 L/day)

 

Stationary type for kitchen: intensively purifies water to be delicious and healthy in your mouth.

Model: TRM-02S

Device size: (W)213 mm×(L)125 mm×(H)262 mm

Capacity: 2.4 L (4.1 L at filling with water)

Cartridge replacement: Approximately 12 months (when using 30 liter per day)

 

Build-in type: matches with the stylish interior

  Model: TRM-03B

  Device size: (W)122 mm×(L)122 mm×(H)283 mm

  Capacity of filtration flow: 4.5 L/m

  Minimum dynamic pressure: 0.05 MPa

  Cartridge replacement: Approximately 30 months (when using 10,000 L/day)

Technical maturity / Past record of introduction

【Domestic sales record】(as of July 2020)
TRM-01P/ Approximately 2,000 units
TRM-02S/ Approximately 500 units

【Oversea sales plan】(as of July 2020)
TRM-03B/ Approximately 30,000 units in Soc Trang province, Vietnam from 2020 to 2024

Name	Tromso Co., Ltd.
Address	5265, Innoshima Shigei-cho, Onomichi-city, Hiroshima, 722-2102 Japan
Capital	3 million JPY (as of 30 September, 2020)
Contact person	Mr. Yuichi YANAKA E-mail: [email protected] TEL: +81-90-2803-5267
Number of employees	6 (as of 30 September, 2020)
Date of company foundation	19 October, 1994
The type of business	Production and sales of rice husk briquette machine

                  

International operation

Number of employees for international operation		2
	City, Country	Name of Company (if applicable)
	Vietnam	CONG TY TNHH SAN XUAT THUONG MAI DICH VU HIKARU

Modality of business transaction

Direct Investment
A branch in Vietnam is planned to be established within 2020. The Headquarter in Japan exports the product to the branch and outsources a local partner enterprise from production to assembly of the relevant parts. The branch in Vietnam is in charge of customer sales.

Schematic illustration of the technology

• Product brochure（4KB）