Wastewater Purification System by Tidal Artificial Wetlands- Wesco Inc. -Sustainable water purification system applying the purification function of tidal flats

Purification of raw sewage water to below standard values

Pollutants entering the wetland are filtered out, and thewater level fluctuations in the wetland, both aerobic andanaerobic microorganisms, as well as the plants and animals
in the wetland, decompose and remove the pollutants.

FeaturesOur proposed technology, " Tidal Artificial Wetlands," has a significant advantage over other water purification technologies in that it requires almost norunning costs. In addition to purifying wastewater, it also helps in the development of green landscapes, environmental education, and ecosystemconservation, and allows for the cultivation of crops in the wetlands.

Overview (Technical principles, actions, etc.)
The " Tidal Artificial Wetlands" are sustainable green infrastructure based on the natural purification mechanism of tidal flats. By optimizing
the shape and structure of the artificial wetlands and the method of water flow according to the conditions of polluted water quality and water
quantity, high purification capacity can be achieved sustainably. Over the past 12 years, we have established this method and have achieveda purification capacity that is approximately 10 times greater than that of conventional artificial wetlands. It is of great interest not only inengineering but also in ecology, and we are still advancing the technology.

WESCO Inc.
International Department
2-5-35, Shimadahonmachi, Kita-ku, Okayama, 700-0033, JAPANURL; https://www.Wesco.co.jp/E-mail s-watanabe@wesco.co.jp
TEL: +81 86 254 2353

Performance /specifications of technology / productResults of purification of BOD concentrations at the existing proposed facility

Domestic
wastewater

Kitchen drainage
Toilet sewage tanktreated water
SewageRestaurant
Methane waste water
Parlor drainage

We design purification facilities (spaces) based onsite conditions (topography, water quality, andquantity), issues, and needs.The left and above
figures show the design of an artificial tidal wetland
to be installed at Damsenpark in Ho Chi Minh City.

Treated sewage water
Aquarium fish breeding water

To date, the water quality of both domestic and industrial wastewater
has met international standards after treatment.

Usage examples / result

We have acquired a Japanese patent for our "tidal artificial wetland water purification system," which achieves higher purification performanceand space saving compared to conventional artificial wetlands, and for our "automatic siphon device," which does not use electricity.

In Japan, we have implemented purification and treatment of sewage
treatment water for agricultural use, aquarium breeding wastewater,
final disposal site effluent, restaurant wastewater, biogas effluent,
milking parlor wastewater, raw sewage, and so forth.Overseas, wehave received business inquiries from Vietnam, the Philippines,Samoa, Fiji, and other countries for purification of wastewater fromlivestock farms, hotels, restaurants, and remote islands.

At the academic level, we are also receiving attention from academic
societies in a variety of fields. We are continuously publishing papers
and promoting awareness on topics such as aeration-independent
purification, sustainability of purification functions by artificial
wetlands, green infrastructure for purification facilities, andpreservation of biodiversity.

A0サイズ （841×1189mm）