Industrial circulatingwater purification
system[Patent pending] Patent application number: 2002-240820

The NBK
grand prizein FY 2005

Winning of environment
and amenity category
award

Special aeration andbiopower resolve
problems, such as
water deterioration
and rotting odors.

Purificationequipment

Air is automaticallysupplied by the ejector
effectWater and air collide withinternal protrusions togenerate super fine babbles

Water is injectedfrom the pump

Water and air are mixed by
the internal fins to create aswirling flow

Powerful combination of
aeration and biomass.
Resolution of various problems of circulating water!

Reduction in odors

Tack-free sludge

Reduction in weight of sludge

Recycling of circulating water

Achieving reduction in odors specific to paint booths, as well as a reduction in the weight of paint residue! The operation of Aience-specificspecial aerator and the biohyper allows the circulating water tank to be effectively improved for cleaning. With adaptation to various water
washing paint booths, this circulating water purification system reduces the number of times of the water replacement and cleaning andfacilitates the acquisition or update of ISO certification.

Before introduction of system

After introduction of system

Suffering from rotting odor of water!

No rotting odor!

A large amount of sludge accumulated on
the bottom of pit!

A significant reduction in sludge in the pit!

A high viscosity of sludge makes the cleaning difficult!
High maintenance and operation cost,such as wastewater collection cost!

A reduction in viscosity of the sludge madecleaning easy!
The number of times the circulating water
was replaced decreased!

Paint sludge
before introduction

Paint sludge
after introduction

The point in wastewater purification is the circulating aeration
It is an important point in maintenance of the environment forthe circulating water tank that aerobic bacteria should beactivated efficiently.
Adopting a special circulating aeration in the wastewater tankallows degradation and purification to be performed efficiently
at high speed.

Conventional aeration system

Circulating aeration system

Introduction example
Shower tester
circulating water

Paint booth circulating water

Paint circulating water treatment
Cleaning circulating water treatment

Cooling circulating water treatment
Wastewater recycling treatment, etc

Aience demonstrates professionalism in wastewater treatment.
It is often heard that a company “failed in purification of circulating water.…”That is because they initiated wastewater treatment without knowing the fundamentals of the process. Please leave it toAience; we achieved treatment results.

Kawasaki Food Industry Co., Ltd.
200m3/day Food processing
wastewater treatment facility
Succeeded in cost reduction of eight
million JPY a year

Kawasaki Food Industry Co., Ltd.
Scene of wastewater treatment facility
construction
Seven 40m3 unit tanks

Hotel Okura Kobe
150m3/day Kitchen wastewater
treatment facility
Succeeded in cost reduction of 15
million JPY a year

Nikko Co., Ltd.
10m3/day Industrial wastewater
treatment facility
Succeeded in stable treatment ofwastewater with high load and highfluctuation

Shimadzu Corporation
10m3/day Kitchen wastewater
treatment facility
Cleaning water containing mineral oil
is treated simultaneously

Kyokuto Kaihatsu Kogyo Co., Ltd.
50m3/day Mineral oil effluent
treatment facility
Release of highly concentrated
mineral oil is also stopped

Circulating water treatment system
It is not necessary to input biomass, except during the early stage of operationand when replacing the circulating water.
Aerobic
bacteria
inhabiting
the pits

Sludge eatersystemPlanningand design
capability

Those allow
the circulatingwater treatment!!

Various types of microorganisms inhabit the circulating water pit. The activity of aerobic
bacteria among them is activated.

Dissolved oxygen activating biomass is prepared.
Fine bubbles are generated by a special diffusion method, which increases the oxygen concentration in the tank.
Distributing oxygen will support the biomass aerobic respiration to bring out metabolism and degradation capability to
the maximum extent.

Difference in biomass types and metabolism

When volume of oxygen falls below a level …

Aience’s technology constantly maintains within this zone

H2S + CO2
Hydrogen sulfide
and carbon dioxide

H2O + CO2
Water and carbon dioxide

Short-chain
fatty acids,
such as acetic acid,butyric acid,and propionic acidAmount of oxygen

Metabolism with oxygen
Metabolism,
such as sulfate ion
Aerobic respiration zone

Anaerobic respiration zone

Aerobic bacteria

Facultative
anaerobic bacteria

Zero oxygen
Anaerobic ferment
Anaerobicbacteria

Transition of circulating water quality (reference actual values)
1,100 million pieces
per milliliter

1,200 million pieces
per milliliter

1,300 million pieces per milliliter

mg / L

500 million pieces per milliliter
Count ofviablebacteria

1 month later

2 months later

3 months later

4 months later

5 months later

1 month later

2 month later

3 month later

4 month later

5 month later( in units of mg / L )It is appropriate to replace the circulating water before the vales of COD and that of BOD are reversed. When the value of COD exceeds that ofBOD, an activator must be input.

Standard specification of sludge eater
Sludge Eater in the case where the water depth is shallow ( 600 mm or less )Detailed view of Sludge Easter

Installation view of Sludge Easter294

Use these at an interval of
800 mm or less.

103.5

Use these at an interval of
800 mm or less.

ModelPump

226

Aquablaster in the case where the water depth is deep ( over 600 mm )Detailed view of Aquablaster

Internal
crushing of oiland SS
Nano
airbubbles
generated

Oil and SS swirled up arecrushed by special fins.

Swirling flows andmicroscopic air bubbles are
generated by making the gas
and the liquid collide with thehard blades.

Zero internalpressure loss
Sludgeon the bottom
swept up

Load on the blower becomes
smaller, making it possible togreatly reduce power
consumption.

An airlift effect sweeps up
water and sludge from thebottom for homogenization
inside the tank.

Part number

Adaptive airflow

AS-250175〜275 L/min

Part number

Adaptive airflow

AL-750600〜900 L/min

AL-1100

900〜1300 L/min

AL-1500

1300〜1700 L/min

For air quantity and layout design, contact Aience.
■ Manufacturer

Aience Inc.

■ For inquiries and service

https://www.aience.co.jp/en/■ Head Office : Kowa Edobori Bldg. 3F, 1-21-7, Edobori, Nishi-ku, Osaka, 550-0002, Japan
Tel.+81-6-6225-2323／Fax.+81-6-6225-2552 Mobile.+81-90-7768-6655■ Tokyo Office : Win Aoyama 942, 2-2-15, Minamiaoyama, Minato-ku, Tokyo, 107-0062, Japan
Tel.+81-3-6869-9189／Fax.+81-3-6893-3931

https://www.aience.co.jp/en/