Clean Air for Everyone-a better environment for the futureHironori Miyagawa
Project Planning Manager, Toyokosho Co., LTD.
h-miyagawa@toyokosho.co.jp+81 033 662 5644

The Offensive Odor Control
Law in Japan-Aim to preserve the living environment of residents and tocontribute to the protection of the health of the people,
Established in 1971, independent of the Air Pollution Control Law-Restrictions on plants and business establishments that generate
malodoras business activities-Regulatory standards:① Regulation by specific malodorous substances② Regulation by Odor Index*Odor index = 10 × Log (odor concentration)-Penalty: There are penalty provisions in case of violating regulatory
standards

In Asia, odor concentration control already exists in Shanghai,South Korea.

The Offensive Odor Control
Law in JapanEX) Regulation criteria on offensive odors in Tokyo

Location :Commercial district
Hight of exhaust pipe: less 15m
Regulation
Site boundary :odor index less 12
Exhaust pipe :odor index less 24The Offensive Odor Control
Law in Japan
Measurement

Measurmnt can also be commissioned to certifcatedcorporations or persons such as an Olfactory
Measurment Operator

Toyo Kokyo has two odor judges (national qualifications)Odor problems in Japan

StableWhy stable in Service category?
▶As more areas become urbanized, more commercial facilities are being

built near residential areas.

▶Now, more communities are demanding action on offensive odors

especially kitchen exhaust from food service industries.

Solution: Photocatalytic Air
Purification ~PCF® Hybrid Type
▶Discovered in Japan!!
▶ It’s a material that activates its oxidizing power

when light is shone on it. Once it’s on, it breaks
down toxic substances odours and dirt.
【5 Utilization】－ Deodorization－ NOx Decomposition－ Anti-Bacteria－ Dirtiness Prevention－ Water-Treatment

Evaluation of Our Filter(ppm)

ISO22197-2 Removal of acetaldehyde :main odor material of kitchen exhaust

6543

Removal rate

UV lamp ON92%!!
210
2.3

8.3

14.3

20.3

26.3

32.3

38.3

44.3

50.3

inout

56.3

62.3

68.3

74.3

80.3

Fine ceramics –Test method for air-purification performance ofsemiconducting photocatalytic materials

86.3

(min)

Toyokosho Main Products
For Kitchen Exhaust for restaurants and food service etc.

ControllBox

Toyokosho Other Products
Built in Rangehoods
For▶Convenience stores▶Kitchen in Condominium

Toyokosho Customers

Toyokosho Customers

Toyokosho Customers

Toyokosho Partners

Easy maintenance
Cleaning of grease filter （2/Year)
Inversion of photocatalytic filter （１/Year)
Change UV lamp（１/Year)

Photocatalyst cartridge

Removal of grease filter

Removal of UV lamp

Set of UV lamp

Removal of photocatalytic filter

Comparison wit adsorption method:
5 years maintenance cost
Air Volume: 450㎥/min

OtherToyokosho

Adsorption system

Photocatalyst system

Deodorization

Adsorption / desorption of odor components

Odor decomposition of odor components

Passage surface wind speed～4.0ｍ/sec

1.5ｍ～2ｍ/sec

Total filter pressure

300pa

120～150pa

Deodorization efficiency
Lifetime of deodorantmaterial
Possiblity of regeneration ofdeodorant material

68～95％(Company data)

Max95%(Third-party)

5～10 years(valiable upto usege)

Semi-permanent (if not damaged)

NoYes

28,000k JPY/unit

16,100k JPY/unit

MethodDeodorization image

initial cost

(Ⅰ)Regular check of filter(every 5 years) 36k JPY/Year

Detail of Mentainance(Ⅰ)Cleaning of grease filter （2/Year)

70k JPY/Year(Ⅱ)Change filter (2 block every 5 years) 720k JPY/Year(Ⅱ)Inversion of photocatalytic filter （１/Year) 39K JPY/Year(Ⅲ)Operation Cost of change filter (every 5 years ) 30k JPY/Year(Ⅲ)Chenge UV Lump (12h/day) 40k JPY/every year（Ⅰ）+（Ⅱ）+（Ⅲ）= 786k JPY/Year(Ⅳ) Electricity (12ｈ/day/365)

126k JPY/Year（Ⅰ）+（Ⅱ）+（Ⅲ）+（Ⅳ）＝ 275k JPY/Year
5 years mentainance cost

3,930k JPY/5Years

65％

1,375k JPY/5YearsDOWN

Comparison wit adsorption method:
CO2 emission
Air volume: 630 m 3 / min
Adsorption system

PCF+/-

Initial pressure loss

300Pa

120Pa

180Pa

Shaft power (35% efficiency)
Power consumption(Operating time: 12 h / day, 365 d / year,
UV lamp included)
Used electricity charge (15 yen / kWh /year)

8.74kW

3.48kW

5.26kW38,281kW

29,258kW

9,023kW¥574,218¥438,870¥135,348

12,977kg

9,918kg3,059kg

CO2 emissions (years) *※ CO2 emission factor: 0.339 kg / kWh (TEPCO example)

25％DOWN

Consulting ServicePropose the best solution based on theatmospheric dispersion simulation by specialist(National qualification)
Simulation Repot
Input :
Exhaust point
Exhaust volume
Distance to thetarget point etc.

Output:Best solution ofequipment

Remote monitoring system(Plan)(IoT solution: under processing to get intellectual right ofbusiness model)InternetDigitalsensorUsage of electric power
Differential pressure of filter
Level of odor

Monthly fee of usage
Timing of maintenanceControl of equipment

We ask your advice!
1. Could this technology be relevant outsideJapan?
2. Who should ToyoKosho contact to discussdistribution, installation and partnership?

The Toyokosho Story▶

Founded in 1988▶

Toyokosho has around 20 years of experience in making air quality and purification
systems. That makes us one of the top manufacturer & sellers of Photocatalytic air

purification systems specialized for industrial exhaust.
▶

Shopping malls, schools, laboratories, resort hotels, processing food plants, and school
lunch centers use our products. (More than 360 units sold in 170 different entities)▶

Trade mark, several Patent were registered.

▶

Toyokosho got the Prize of the Environmental equipment awards in 2010.

Certification

AwardCorporate information