Detailed document No.3

3 Treatment of wastewatercontaining mineral oils

● Purification of car wash wastewater after cleaning

a vehicle such as an automobile, bus, and train

Aquablaster diffusion pipe
2019.12

■ Treatment of wastewater containing mineral oils

requires labor and costs...

Aquablaster diffusion pipe

In automobile or train
repair shops and offices
where vehicles areinevitably washed on thepremises, wastewatercontaining mineral oils isgenerated; it takes laborand costs to treat such
wastewater.

The sludge collection frequency
reduced from 8 to 1
For the office in this example, the condition of the pit
became as shown in the photo on the left, and oil
mud was collected by an industrial waste disposal
company three times a year. However, two years andsix months have assed since the installation of the
Aquablaster diffusion pipe, and no such work has
been carried out since the installation.

❶■ Bus storage yard wastewater treatment example
when purified using only theAquablaster diffusion pipe andbio-drip, without chemicals

This water mixed
with mineral oil

Aquablaster diffusion pipe

becomes this clear and pure.

Actualdischargewater

MeasurementtargetRaw water

Treated water

PH

6.9

7.4

BOD344

COD

278SS

213

Mineral N-Hex

30

1.1

Generalbacteria

16,000,000

160,000

Oil content adheresto the inside of thecontainer.

Beforetreatment

Aftertreatment❷■ Bus storage yard cost reduction example
Three industrial
waste collections per year

Aquablaster diffusion pipe

Reduced to one collection
every two and a half years!!

Bus storage yard, Osaka Prefecture Amount of industrial waste collected 180m3/year
Item

Before introduction

After introduction

Amount difference

Cost of sludge collection(cost of cleaning)

2,400,000

320,000▲2,080,000

Other expenses

600,000

300,000▲570,000Cost of power consumption

250,000

380,000

130,0000

240,000

240,000

Bio and maintenanceOne-year cost performance▲2,280,000❸■ Odor generation also prevented

Aquablaster diffusion pipe

Since this office also had aproblem with odor,
inspection was carried out
with a Kitagawa gas
detector tube system,andhydrogen sulfide at nearly
80ppm was detected before
implementation.

Before installation
Lower than 80ppm

After installation
Not responsive

Before implementation, as shown in
the above photos, hydrogen sulfide atnearly 80ppm was generated from thepit. However, after the installation of
the Aquablaster diffusion pipe, anoffensive odor source substance suchas hydrogen sulfide completely ceases
to be generated completely.
❹■ Contribution also to CO2 reduction

Aquablaster diffusion pipe

Amount of CO2 reduction 395t /year
700

Since generated sludge
and water containedmineral oils, they weretreated by combustion
method at an industrial
waste processing factory.
However, the collection
cycle could be extended,successfully achieving a
reduction of CO2 bynearly 400t per year.

6005004003002001000（Tons）

Before introduction

After introduction❺■ Example of purification and maintenance of

circulating water containing a lot of mineral oils

Aquablaster diffusion pipe

The life of circulating water extended fromone week to a half year
Car factory, company D

Car factory, company N

Beforeintroduction

State ofoperation

After
introduction

Photo ofinstallation

Control
panel
Ring
blowe

Conveyor grease
Material adheringto the chassis, etc.

BIOBIOP

This is an example ofcirculating water purification
applied to a production line
for checking whether watergets into a vehicle, by
spraying water from all
directions, in the vehicle
inspection process.

Supplied: 1999/Since the installation in October,
The Aquablaster diffusion pipe has been supplied
to three locations in total as repeat orders.

Supplied: October 2005/Since the installation,
The Aquablaster diffusion pipe has been introduced
to three locations in total as repeat orders.

❻■ Diffusion pipe Aquablaster mechanism

The Aquablaster
diffusion pipe isa treatment
system that canreduce costs
and CO2.

Aquablaster diffusion pipe

❶ Air from the blower is emitted as a high speed
air blast.

❷ Water and sludge at the bottom are swept up by an
air lift effect.

❸ With special shaped fins developed by using fluid❸

dynamics, air and water are vigorously mixed
together to generate nano air bubbles andcirculating currents in the tank.(Patent pending)❹❹ When circulating currents are generated, oxygen is❶❷also supplied to the corner sections at the bottomof the water tank, where the dissolved oxygen
concentration does not increase easily.

❺ By keeping the dissolved oxygen concentration

at 2.0mg/Lor more, microorganisms are activatedmaximally.
❼■ Advantages of introducing the Aquablaster diffusion pipe

Aquablaster diffusion pipe

The Aquablaster diffusion pipe is a treatment system that can reduce costs and CO2.
Cleaning frequency reduction

Considerable cleaning cost reduction

Oil mud sludge reduction

CO2 reduction through industrial
waste reduction in volume

Use of recycled treated water

Water usage amount reduction

Labor saving

Labor cost reduction

Odor problem resolution

Work environment improvement

Compliance with laws and regulations

Contribution to compliancewith CSR and ISO❽■ Other wastewater treatment facility supply records Aquablaster diffusion pipe
Waste plastic recycling plant (12 sets OEMed to Nikko)

Supplied／December 2003...

Food processing factory wastewater treatment

Treated water River discharge

Unit mg/L

Raw water

BOD

2000

80

100 or less

COD

1600

70

100 or less

SS

2000

40

30 or less

N-Hex

200

15 or less

Supplied／May 2001

SHIMADZU CORPORATION Seta factory Kitchen & industrial wastewater treatment

Supplied／November 2002

Supplied／January 2009

Raw water

BOD4505300 or less

SS430

4300 or less

N-Hex

380

2（Mineral）5 or less

Food waste recycling plant wastewater treatment

Treated water Sewage discharge

Unit mg/L

Raw water

300 or less

BOD1501080300 or less

SS100

101230 or less

N-Hex151

Unit mg/L

Raw water

BOD

1200

85

SS800

N-Hex120

Supplied／July 2005

Food processing factory wastewater treatment

Supplied／October 2001

Treated water Sewage discharge

Unit mg/L

Raw water

BOD

2100

350

SS1500N-Hex350

Water being
circulated andreused as
coolant water
for machines

Major hotel (modification work) Kitchen wastewater treatment

Treated water Value in the contract

Unit mg/L

Treated water Discharge standardTreated water Sewage discharge

Unit mg/L

Raw water

400 or less

BOD68078200 or less

200

300 or less

SS500

57200 or less35

40 or less

N-Hex

150

1030 or less

Supplied／February 1999

Food processing factory wastewater treatment

SHIMADZU CORPORATION Head office Kitchen wastewater treatment

Unit mg/L

Raw water

Unit mg/L

Raw water

BOD

1200

220

300 or less

BOD

2000

100

200 or less

SS

800

300

300 or less

SS2500120

200 or less

N-Hex

400

2030 or less

N-Hex250

1530 or less

Treated water Discharge standard

Supplied／September 2007

Treated water Sewage discharge❾https://www.aience.co.jp/