Daiki Axis Johkasou

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Daiki Axis Co., Ltd.
Daiki Axis is Japanese water treatment company founded in 1958.
JapanOversea

MATSUYAMA FACTORY
TSUSHIMA FACTORY
FUKUSHIMA FACTORY
MATSUYAMA FACTORY

Over 65 years
experience inwater
treatment field.

2015 INDONESIA FACTORY

2022 SRI LANKA FACTORY

2018 CHINA FACTORY

2022 INDIA FACTORY(Delhi)

2019 INDIA FACTORY(Mumbai)

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Water Pollution

Landfills,etc.

Industrial

Oil spills

Waste

Water
Pollution
Sewage &Plastic &Garbage

Wastewater(Domestic)
AgriculturalWaste

4Water Pollution
Ocean and River With Water Pollution

5What is Domestic Wastewater?
DOMESTIC WASTEWATER = Water used by people's daily life

When expressed in BOD, a measure of pollution, it produces 40g/person/day.

Other
9g

GreywaterToilet
13g

BOD
40g/p/d

Black
water

Kitchen18g

https://www.env.go.jp/recycle/jokaso/en/pamph/wastewater_treatment_systems.html

6On-Site Treatment System■ Can treat wastewater on-site where centralize system is not available
1) Rural area with low population

2) Difficult to connect pipe line from place to place like valley, mountain■ Low initial investment cost
■ Short construction or installation time and quickly realize the effect■ Maintenance is easy and no need operator■ If population is increase, easy to extend■ Treated water can be re-use at site！

OSTOSTOSTOSTRiverRiverOSTOSTOSTOn-Site Treatment System – Septic Tank

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■ Only black water can be treated■ Only sedimentation treatment process (Only primary treatment)■ When treated water want to discharge into river, need additional treatment■ Installation is prohibited in Japan due to environmental pollution

To additionaltreatment

wastewaterSludge8On-Site Treatment System - Johkasou■ One of on-site domestic waste water treatment system developed in Japan■ Treat both black and grey water■ Combination of sedimentation, anaerobic and anaerobic treatment process■ Treated water can directly discharge into river or lake without any water pollution■ Treated water can reuse for various purposes

Daiki Axis’ Johkasou BAE Model

Aeration Blower

BOD
20mg/L

BOD
300mg/L
53

2

1

4

Circulation

InSeparation Box1

Sedimentation& Separation

AnaerobicContactmedia
2

Desludge

Desludge3

Sedimentation

Moving Bed4Disinfection
5OutProject Reference – 20m3/d Treatment Johkasou in India

Comparison between Johkasou and Septic tank

JohkasouSeptic tank

Treat domestic wastewater

Treat only toilet wastewater

Anaerobic + Aerobic treatment

Sedimentation treatment

High treatment performance
Effluent BOD ≦20mg/L

Low treatment performance
Effluent BOD 100mg/L ~150mg/L

Desludging need once per 6 month

Desludging need once a month

Construction period is shortConstruction period is long

Treatment performance, tank structure and product quality ofJohkasou are certified by Government and have to follow
Building of Standard (MOE) and Johkasou Act (MILT).

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Summary

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Water is the most immediate vital necessity for our life and have to
product from water pollution.
Daily domestic wastewater usage of each person on the world is huge
affect on water pollution and have to treat.
The wastewater discharged from the Septic tank has a high BOD of 100
to 150 mg/L, which would lead to pollution if discharged directly into ariver.
On the other hand, if the BOD can be reduced to less than 20 mg/L anddischarged, like a Johkasou, then the river will not become polluted.
Johkasou can maintain good water quality of public water bodies and ahealthy living environment and promote public health by treating
domestic wastewater onsite

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THANK YOU

https://www.daiki-axis.com/en/