Water

 

Lucun WWTP, Wuxi City

Jiangsu Province, China

Trial and analysis to upgrade/extend the existing domestic Lucun WWTP

 

Project Introduction: Trial for Lucun WWTP,  Wuxi City

Short description:

For upgrading the Lucun WWTP the environmental management of the Taihu-Lake-River-Basin requested several treatment processes.

The design capacity is 200,000 m³/d. The existing process is A/A/O. 

The assignment of the trial and analysis is to optimise the treatment process that the effluent could meet the standards of national A Class.

 

Trial installation:

After 3 months of operation the All-in-one basin ROCtecs/BDP bio-process shows that the outflow quality reaches the A Class standards. 

Additionally the operation energy consumption indicated an extremely low rate. 

All result are approved by plant and local government parties.

Treatment capacity

120 m³/d

Water quality 

 

CODCr

BOD5

SS

NH₃-N

TN

TP

pH

Influent (mg/l)

< 400

< 200

~ 400

< 40

~ 45

< 20

6 ~ 9

Effluent (mg/l)

45

8

~ 10

5

< 12

< 1.0

6 ~ 9

 

 

Project comparison : Trial for Lucun WWTP,  Wuxi City

ITEMS

three-tank oxidation ditch

ROCtecs/BDP equipped and operated bio-process

Influent/Effluent (mg/l)

CODcr

Influent 

(mg/l)

800

800

Effluent 

(mg/l)

100

60

NH₃-N

Influent 

(mg/l)

70

70

Effluent 

(mg/l)

50

10

TN

Influent 

(mg/l)

100

100

Effluent 

(mg/l)

60

20

SS

Influent 

(mg/l)

150

150

Effluent 

(mg/l)

70

20

Land area (m2)

3,500

2,000

Treatment Capacity (m3/d)

10,000

10,000

Running cost (RMB/m3)

1.5

0.7 ~ 0.8

DO (mg/l)

2~4

0.3

MLSS (mg/l )

2,000 ~ 3,000

~7,000

TN removal rate (%)

40 ~ 50

above 80

Load per volume(KgCOD/m³✳d)

0.4 ~ 0.5

0.8 ~ 0.9


 

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