1

-Tianjin is located in North

China.

-100 km southeast from

Beijing

-A megacity with more than

10 million population

-An important international

port, economic and

industrial center in North

China

• Average water availability per capita in Tianjin: 76.1 m3/year in 2014

(the water scarcity threshold in the world is 1700 m3/year)

Water Reuse in Central Areas of Tianjin Case Study—Water Reuse in Tianjin City

（References: Chen et al., 2017; Tianjin Water Reuse Corporation, 2016）

2

• Until the end of 2016, completed construction of reclaimed water pipeline

in Tianjin: 806.57 km, of which 343.96 km has already connected to

reclaimed water.

Water Reuse in Central Areas of Tianjin Case Study—Water Reuse in Tianjin City

0

500

1000

1500

2000

2500

2007年 2008年 2009年 2010年 2011年 2012年 2013年 2014年 2015年 2016年

Water reuse amount in Tianjin (104 m3)

2007 2008 2009 2010 2011 2012 2013 2014 2015 2016

Year

Am

ount

（References: Tianjin Water Reuse Corporation, 2017）

• Five reclamation

water plants in central

Tianjin

• Total designed

capacity: 250,000

m3/d

• Actual production

capacity: 63,560 m3/d

• The reclaimed water

source is the

secondary effluent

from WWTP

• All the plants are

managed by Tianjin

Water Recycling

Company, a publicly

owned company.

Xianyang Road

WRP

(50,000 m3/d)

Jingu WRP (70,000 m3/d)

Beichen WRP

(20,000 m3/d)

East Suburb WRP

(50,000 m3/d)

Zhangguizhuang

WRP (60,000 m3/d)

Water Reuse in Central Areas of Tianjin

(Reference: Tianjin Water Reuse Corporation, 2016, Unpublished report)

3

Case Study—Water Reuse in Tianjin City

Plant name

Design

capacity

(103 m3/d)

Reclaimed water

supply

(103 m3/d)

Service

area (km2)User types

Serviced

population

Jingu WRP 70 36 200

Industrial,

residential and

environmental

users

60,000

households

Xianyang Road

WRP50 19 72.6

Industrial and

residential

users

−

East Suburb WRP 50 9。3 98.5 Industrial users −

Beichen WRP 20 − 83.3 − −

Water reclamation plants (WRP) in central areas of Tianjin

4

Water Reuse in Central Areas of Tianjin Case Study—Water Reuse in Tianjin City

（References: Chen et al., 2017; Tianjin Water Reuse Corporation, 2016）

Industrial uses

Water Reuse in Central Areas of Tianjin Case Study—Water Reuse in Tianjin City

（Reference: Tianjin Water Reuse Corporation, 2016）

Residential uses (fountains)

Water Reuse in Central Areas of Tianjin Case Study—Water Reuse in Tianjin City

Urban miscellaneous uses

（Reference: Tianjin Water Reuse Corporation, 2016）

7

• The treatment processes applied for most municipal WRPs in Tianjin

Secondary

effluent of WWTP

Regulation tank

Chlorine (5 mg/L)

Submerged Ultrafiltration Reverse Osmosis

Ozonation for

decolorization

Mixed water

(mixture ratio: 2:3)

Chlorination for

disinfection

Residential uses Industrial uses

89,510 m3/d 42,240 m3/d

Water Reuse in Central Areas of Tianjin Case Study—Water Reuse in Tianjin City

UF-Ozonation-Chlorination

UF-RO

Treatment processes of Jingu (津沽)

（References: Chen et al., 2017; Tianjin Water Reuse Corporation, 2016）

8

• Use of the reclaimed water for Jingu WRP

CategoryResidential uses

(Yuan RMB/m3)

Industrial uses

(Yuan RMB/m3)

Other uses

(Yuan RMB/m3)

Drinking water 4.9 7.85 22.25

Reclaimed water 2.2 2.5 4

Water and reclaimed water price for different uses in Tianjin

- The reclaimed water from UF-Ozonation-Disinfection is

for residential uses (complies Chinese water reuse standard

GB/T 18920-2002 for urban miscellaneous water uses)

- The water from RO-UF mixture is for industrial uses

(complies Chinese water reuse standard GB/T 19923-2005

for industrial uses)

Water Reuse in Central Areas of Tianjin Case Study—Water Reuse in Tianjin City

（References: Chen et al., 2017; Tianjin Water Reuse Corporation, 2016）

Thank You for your attention !

Reclaimed Water in China: http://www.reclaimedwater.net