Polluted Water Treatment System without Chemicals

Quick Treatment of Polluted Water

Japan Government<NETIS>
New Technology Information System
Registeration Number : No.CG-020011

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Before Treatment

After Treatment

Polluted Water Treatment on Site

For Construction Site
Outline of System●The System provides treatment of polluted water with the macromolecule microfilter.
●Filtration of polluted water can be carried out by static water head.
●The System can improve quality of downstream by enhancing dissolved oxygen content
which is formed in Microbubble Unit installed in the System.
●Polluted water can be reused as valuable water resource.

Advantage
Impurities in the polluted water can be removed by filtration
without using any chemical coagulant.
■Operation Data : Water Quality in Yamaguchi Pref.
Before Treatment

After Treatment

Color

Brown

Transparent

Odor

Slight Odor

Odorless

Turbidity

Dissolved Oxygen● Operation Method● Microbubble Unit

The System can be operated by turning
the main switch to ON (or OFF), thenthe operation switch to AUTO (or MAN)depending on operation mode you select.

The unit can enhance dissolved oxygen
content of the treated water which isdischarged to the river.

● Conpact Design
The System is designed to also provide for urgent needs, such as easy transportation,
installation and dismantle,therefore, an emergent service for treatment of polluted
water can be carried out.
２Low Power Consumption

For Construction SiteApplication●Waste water treatment in thermal power plant●Treatment of waste water discharged in plant maintenance work
●Treatment of polluted water in civil engineering and construction work
●Treatment of waste water polluted with heavy metals●Treatment of waste water polluted with toxic substances(dioxin,etc.,) in the incineration plant●Treatment of waste water containing algae formed in lakes and marshes●Treatment of waste water of industrial plant●Treatment of river water for agricultural use(Ceramic Filter)

Treatment★Macromolecule Microfilter System(MTP Series)★
Over 5micron sized impurities can be removed with Macromolecule Microfilter without using any chemicals.
Macromolecule Microfilter is capable to treat large amount of polluted water while removing fine particle
impurities.
Macomolecule Microfilter can be operated for long time by brushing the surface of filter cloth.
Water Cleaning

Polluted Water

Cleaning Brush

Macromolecule Microfilter
er
Inside of Microfilter

Supporting MaterialhCleaning Brush
Filter Cloth Core Material

ated Water
TreatedＰ

SludgeType:MTP-20-40

Sludge separated from the System can be dehydrated,dried and discharged.

Treated Water Storage: available at your option

Specification

TypeLength(ｍ)Width(ｍ)Height(ｍ)Dry Weight(ｔ)Treatment

Maximum Capacity( ㎥ /hr)

Type ofFiltration(Pump)*The specification may be modified without notice.
*As weight of the System can be increased after the site operation
because of sludge separated from polluted water.
Take care not to overload in case of crane lifting and transportation.

３PowerSource

Power CConsumption（kW)Filtration by Water Cleaning Pump Capacity Pump Capacity
static water(Maximum)(70% Loaded)
/h
head

00.6

8.8

6.16

00.3

4.4

3.08

00.14

2.2

1.54

00.07

0.75

0.53

Turbidity Condition : Feed Water 1,000mg/l,
Product Water 1 ～ 150mg/l

For Construction Site

Treatment of Polluted Water with Heavy Metals★Electrical Coagulation Unit(G-series)★
A pair of electrode plates are mounted in the unit.
Fine impurity particles are flocked and coagulated by metal ions.
Various polluted water can be treated by combining with MTP series.

CoagulatedElectrode Plate

Type G-1
Electrode Plate

Specification
TypeLength(ｍ)Width(ｍ)Height(ｍ)Dry Weight(t)Maximum Capacity( ㎥ /hr)Treatment

Power Source

Power
Consumption（kW)29Electrical
Coagulation
Method15
10.5*The specification may be modified without notice.
*As weight of the System can be increased after the site operation because of the sludge separated from polluted water.
Take care not to overload in case of crane lifting and transportation.

★Dehydration Unit(MTD Series)★
Polluted water can be separated to the filtrated water and sludge by the Macromolecule Microfilter.
Sludge can be dehydrated upto 35-60 % water content and packed in sandbags for further treatment ortransportation by truck.

Macromolecule Microfilter
Specification
Type

Length(ｍ)MTD-1S

1.8

Width(ｍ) Height(ｍ) Dry Weight(t)

2.1

2.5

2

Treatment

Maximum Capacity( ㎥ /hr)Maximum Capacity( ㎥ /day)

Dehydration Method(Pressured with Pump)0.5 ～ 2Less than 10*The specification may be modified without notice.
*As weight of the System can be increased after the site operation
because of sludge separated from polluted water.
Take care not to overload in case of crane lifting and transportation.

４

Power Source PowerConsumption(kW)1.6

Turbidity Condition : Feed Water 1,000mg/l,
Product Water 1 ～ 150mg/l

For Construction Site
Comparison with Conventional System
The Macromolecule Microflter System will not load further pollution control
to the environment.

★Conventional Treatment★
Disadvantage●Large space required●Poor turbidity removal●Added hemicals in the treatment may disturb
the local public.

Treated Water: to River
Coagulant

Polluted Water Storage Tank(Pond)★Macromolecule Microfilter System★
Advantage●Smaller space required than the conventional system●Treated Water can be discharged without further treatment.
●No further treatment necessary due to no chemical addition to the system.

MTP Series(Microfilter Unit)

MTD Series(Dehydration Unit)②Concentrated
Polluted Water①Polluted Water③To Sludge Treatment

Treated Water : to River
Polluted Water Storage Tank(Pond)

５

For Construction Site

Algae Removal System★Treatment of Algae formed in lakes and marshes★
Algae formed in lakes and marshes can be removed by Macromolecule Microfilter System.
Maximum 96% of chlorophil-a can be removed in the treatment of reservoir water.

Con cept Drawi ng

MTP Series
Macromolecule Microfilter
Microfilter

Core Material

Feed Water Intake

Treated Water Tank

Algae Formation
Lakes and Marshes

Cleaning
Brush

Macromolecule
Microfilter
Microbubble Generation Unit

Concentrated
Polluted Water

Concentrated polluted water can bereturned to the lakes and marshes ortreated further by MTD Series.

Discharge

MTD SeriesMultiplex Disk-Type Filter
Dehydration, Filtration

Water Level

Scraper
TreatedWaterDischarge

Intermediate Storage Tank
Macromolecule Microfilter

Treatment of Dehydrated Sludge

６Sludge ChuteSludge PanFor Construction Site

Treatment of Heavy Metals Pollution★Filtration of Polluted Water with Heavy Metals★
Polluted water with heavy metals such as lead, arsenic and iron (or dioxin originated from incineration ash)can be treated by combining the Electrical Coagulation Unit (G-Series), (or Coagulation & Sedimentation Unit)
with Macromolecule Microfilter System(MTP-series).

Co ncept Drawi ng
C o a g u l a t io n a n d S e d i m e n t a t i o n U n i t
Polluted Water Feed

Coagulant

Agitator

MTP Series
Macromolecule Microfilter

ＡMicrofilter

Core Material

Mixing Tank
Agitator Blade

Agitator Blade

TreatedWater Tank Discharge

G-series
Electrical Coagulation Unit
Macromolecule
Microfilter

Cleaning
BrushElectrical Coagulation Unit

Ｂ

Concentrated
Polluted Water

Electrode Plate

Microbubble
Generation Unit

MTD SeriesMultiplex Disk-Type Filter
Dehydration, Filtration

Water Level

Scraper
TreatedWater

Discharge

Pollution Source
Intermediate Storage TankMacromolecule Microfilter
Intermediate Storage Tank

■ Operation Performance(Example)
Design Basis Before
TreatmentLess than 600
3550

After
Treatment<1

Lead and Lead related compounds(mg/ℓ)

Less than 0.1

0.728<0.005

Arsenic andArsenic related compounds (mg/ℓ)

Less than 0.1

0.112

0.018

Suspended Solids(mg/ℓ)

Sludge Chute
Sludge Pan

Treatment of Dehydrated Sludge■Incineration Plant Dismantling Works
Design Basis Before
Treatment

Dioxin and its group(pg-TEQ/L)

10After
Treatment

180※Design Basis ; Japan Dioxin Control Act(Treatment of Dioxin)

Design Basis(Japan Sewer Control Act)

Treated Water

Feed Water

７＜1★Reference List★

■Reference List(Extracted)
CustomerFeed Water

Type of System

Operation at Site

Remarks

Local Municipality Waste Water of Land Development Work

MTP-10-20

2001

Government

MTP-40-60 G-Ⅲ 2

2003

Polluted Water Treatment

2003 to 2004

Polluted Water Treatment

2004

Prefiltration of River Water

Local Municipality Waste Water of Multi-purpose Storage Expansion Work MTP-10-20

2004 to 2005

Polluted Water Treatment

Local Municipality Water Purification for Agricultural Usage

MTS-03（Ceramic Filter)

2005

Local Municipality Waste Water of Flood Control Construction Work

MTP-40-60 G-Ⅲ

2005

River Water Treatment for Agricultural Use
Polluted Water Treatment andHeavy Metal Removal

2005

Filtration of Waste Water

MTP-05-10

2006

Polluted Water Treatment

Private Enterprise Waste Water of Local Road Construction Work

MTP-05-10 MTD-06

2006

Algae Removal of Reservoir Water

Local Municipality Waste Water of Incineration Plant Renewal Work

MTP-05-10

2006 to 2007

Local Municipality Waste Water of High Way Construction Work

MTP-05-10 MTC-Ⅱ

2006 to 2007

Local Municipality Waste Water of River Repair Work

MTP-40-60

2007

Recycle of Waste Water of Incineration Plant
Polluted Water Treatment andHeavy Metal Removal
Polluted Water Treatment andIron Removal

Local Municipality Waste Water of Sewer Construction Work

MTP-03-06

2007

Spring Water Treatment

Local Municipality Spring Water of Tunnel Construction Work

MTP-05-10

2007

Spring Water Treatment

MTP-05-10

2008

Polluted Water Treatment

MTP-03-06,MTK-1,G-1

2008

Removal of Heavy Metals

2008 to 2009

Treatment of Cooling Water containing
Coal Ash

Waste Water of River Dredge Work

Local Municipality Waste Water of Flood Control Gate Construction Work MTP-10-20
Government

MTP-05-10

Waste Water of River Repair Work

Local Municipality Treatment of Waste Water in Land Development Work MTC-Ⅱ
Government

Government

Waste Water of Land Development Work

Polluted Water of Pressurized Cleaning Plant

Private Enterprise Waste Water of Mining Shack Dismantling Work

Filtration

Private Enterprise Cooling Water of Power Plant

Polluted Water Treatment in Wire-saw Operation

Pre-filtration of River Water
for Water Purification

Polluted Water Treatment

Polluted Water Treatment and Heavy Metal Removal

Inquiry

Research Institute of Polluted Water Treatmentc/o. Nakamura Construction Co.Ltd.
1115-10 Nakayama Oaza, Ube Yamaguchi,755-0058, Japan

Tel: 81-836-21-5802,

Fax: 81-836-21-5759

E-mail info@nakamura-k.jp

East Japan Officec/o. Taisei RoTech Co.Ltd.
3-13-1 kyobashi, chuo-ku, Tokyo, 104-0031, Japan

Tel: 81-3-3561-7831,

Fax: 81-3-3564-4678

The contents may be revised for product improvement
without notice.

http://www.nakamura-k.jp

02/2011