Assessment report


CHAPTER 6: PERFORMANCE DATABASE FOR WASTEWATER



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CHAPTER 6: PERFORMANCE DATABASE FOR WASTEWATER

TREATMENT SERVICES 2014




6.1. Development of Performance Database for Wastewater Treatment Services 2014

6.1.1. Training on Performance Database for Wastewater Treatment Services


A conference “Collection Data on Urban Wastewater Treatment Services in Vietnam” has been conducted in Ha Noi on 23/9/2015. 14 out of 17 utilities participated, excluding three utilities as Quang Ninh, Hai Duong and Phu My Hung. At the conference, two utilities (LAWACO and Soc Trang Urban Works One Member Limited Company) submitted their data.

6.1.2. Data collection:


The Ministry of Construction sent the letter No.2404/BXD-HTKT dated 15/10/2015 to 16 utilities in charge of WWTP operation and management in the country in which requested to provide data in WWT in year 2014.

By 31/1/2016, it received data from 13 utilities in which 3 utilities did not submit their data as Can Tho, SFC Vietnam and Vinh Urban Infrastructure Development and Management JSC.



The list of utilities submitted WWT data presented in the Table 6.1.

6.1.3. Verification and Data Inputs Correction


  1. Review and Verification of Data Inputs

The data has been verified and analyzed. The unreasonable data was verified via the form: phone calls directly to data provider or send the verified data to the utilities for confirmation. In general, the data seem to be quite accuracy with some minors in unit of measurement as: thousand or units (m3, people, million VND) and misunderstandings on the population in service areas.

  1. Data Correction

The data correction is undertaken as following principle:

  • Use data provided by the Utilities.

  • For some inconsistencies or unreasonable data, Consultant reviewed and adjusted based on the reference source as follows:

  • Response from providers;

  • Data published by the utilities (disclosure reports or Internet);

  • 2014 Reports submitted by DoCs to the MoC within framework of implementation of Decree 05/2012 and 06/2012 as stipulated by the MoC.

The correction and adding data inputs of the utilities are summarized in Table 6.2 below. Details of adjusted and added values are presented in Annex 6.1.

6.1.4. Development of Performance Database for Wastewater Treatment Services 2014


The data inputs after correction used to develop the indicators and published in the website www.vnwd.vn

6.2. Performance Indicators of Utilities

6.2.1. Performance Indicators


All values of the indicators in the database for wastewater treatment service 2014 are summarized in the Tables, presented in Annex D – Annexes of Chapter 5 of the Main report.

6.2.2. Quartile


The value of quartile (low to high) of the Utilities indicators are summarized in Table 3.3. Values of quartile of Utilities Indicators. Each type of indicator has the following values:

  • Minimum value (Min);

  • First quartile (25th percentile), Q1;

  • Median value (50th percentile), Q2;

  • Third quartile (75th percentile), Q3 and;

  • Maximum value: Max.

Table 6.1- List of Participating Utilities in Sewerage Database 2014

Province

No.

Name of Utilities

Abbreviations used in the Report

Code

Participated 2014







A. Northern Midland and Mountainous Region










9. Quang Ninh

1

Ha Long Urban Environment Joint Stock Company

Ha Long URENCO JSC

A09.1.C

Y

15. Bac Giang

2

Urban Drainage Pumping Center - Bac Giang City

Bac Giang UDPC

A15.1.C

Y







Sub-total A = 02 Utilities (Participating: 02)

 













B. Red River Delta Region










1. Ha Noi

3

1) Ha Noi Drainage and Sewerage One Member Limited Company 

Ha Noi HSDC

B01.1.C

Y

1. Ha Noi

4

4) Vietnam SFC Company




B01.4.C

-

3. Bac Ninh

5

1) Bac Ninh Drainage and Wastewater Treatment One Member Limited Company

Bac Ninh DWT Co. Ltd

B03.1.C

Y

7. Hai Duong

6

Hai Duong Urban Works Management JSC

Hai Duong UWM JSC

B07.1.C

Y







Sub-total B = 4 Utilities (Participating: 03; Not participating:01)
















C. Central Coast Region

 







2. Nghe An

7

Vinh Urban Infrastructure Development and Management




C02.1.C

-

4.  Quang Bình

8

Quang Binh Environmental and Urban Development One Member Limited Company

Quang Binh EUD Co. Ltd

C04.1.C

Y

7. Đa Nang

9

Da Nang Water Drainage and Wastewater Treatment Company

 Da Nang SDC

C07.1.C

Y







Sub-total C = 03 Utilities (Participating: 02; Not participating: 01)
















D. Central Highland Region










3. DakLak

10

1) Dak Lak Urban Management and Environment One Member Limited Company

Dak Lak UMENCO

D03.1.C

Y

5. Lam Dong

11

Lam Dong Water Supply and Sewerage One Member Limited Company  (LAWACO)

LAWACO

D05.1.C

Y







Sub-total D= 02 Utilities (Participating: 02)
















E. South East Region










1. HCMC

12

1) Ho Chi Minh Urban Drainage Company

HCMC UDC

E01.1.C

Y




13

2) Phu My Hung Development Limited Company

Phu My Hung Corp

E01.2.C

Y

2. Binh Duong

14

1) Binh Duong Water Supply, Sewerage and Environment One Member Limited Company

BIWASE

E02.1.C

Y







Sub-total E = 03 Utilities (Participating: 03)
















F. Mekong River Delta Region










7. Soc Trang

15

Soc Trang Urban Works One Member Limited Company 

Soc Trang UWC

F07.1.C

Y







Sub-total F = 01 Utility (Participating: 01)
















Total A+B+C+D+E+F = 15 Utilities (Participating: 13; Not participating: 02)







13

Table 6.2 - List of data correction and additional data inputs

No.

Name of Utilities

Number of cities served with WWTP

Name of cities served with WWTP

Name of service areas of WWTPs

Total population of service areas

Design capacity


Treatment Process

Receiving source

Total volume of treated WW reused

Total volume of treated WW discharged into water resources




Code

C21

C22

C23

C24

C40

C42




C50

C51B

1

Ha Long URENCO JSC

C

C






















2

Bac Giang UDPC










A







C

C

C

3

Ha Noi HSDC

C

C

C



















4

Bac Ninh DWT Co.Ltd










A
















5

Hai Duong UWM JSC






















C




6

Quang Binh EUD Co.Ltd




























7

 Da Nang SDC




























8

Dak Lak UMENCO




























9

LAWACO






















C

C

10

HCMC UDC










A




A










11

Phu My Hung Corp




























12

BIWASE













C










C

13

Soc Trang UWC




























Note:

C: Data corrected by the utilities

A: Additional data not yet provided by the utilities

Table 6.3 - Quartile values of Indicators




Code



Indicator

Unit

Quartile values

Number of utilities

Min

Q1 (Lower)

Q2 (Median)

Q3 (Upper)

Max

C21

Number of cities served with waste water treatment services

#

1

1

1

1

3

13

C25

Total population served by WWTPs

000 inhabitants

28

47.207

58.7

143.7

545

13

C1.1

Waste water treatment service coverage

%

9.40

17.93

44.92

77.86

100.00

13

C2.1

Electricity consumption per m3 of water pumped (KWh/m3)

KWh/m3

0.03

0.06

0.13

0.19

0.25

10

C2.2

Staff per volume of treated waste water

staff/km

0.02

0.11

0.25

0.85

3.15

12

C2.3

Ratio of length of cleaned sewers to the total length of sewers

%

0

0.34

39.31

63.09

100.00

12

C2.4

Number of sewer system troubles (blockages, collapses…) in the year per 1 km of sewer

#/km/year

0

0

0.06

0.11

3.42

12

C40

Total design capacity of WWTPs

m3/day

7,400.00

10,000.00

13,181.00

17,650.00

171,000.00

13

C3.1

Land used ratio

Ha/1.000m3/
day

0.09

0.13

0.25

1.01

4.92

13

C3.2

WWTP investment ratio

Million VND/ m3/ day

0.04

4.02

9.86

21.94

112.41

11

C47

Total volume of Waste Water treated in the year

m3/year

1,366,543

1,861,500

2,310,508

3,300,000

56,510,410

13

C48

The outside sludge (septage,…) transported to the WWTPs for treatment

m3/year

734.00

888.50

2,946.50

5,292.50

6,311.00

4

C51A

A- Water resources that used for purpose of domestic water supply

m3/year

0

0

0

0

0

13

C51B

B- Water resources that not used for purpose of domestic water supply

m3/year

1,241,500

1,800,000

2,310,508

3,300,000

56,510,410

13

C3.3

Production utilization of capacity

%

24.43

37.44

48.02

87.77

107.39

13

C3.4

The % of treated waste water samples tested by DoNRE that pass relevant standard

%

0

100.00

100.00

100.00

100.00

10

C3.5

The % of treated waste water samples tested by the Utility that pass relevant standard

%

0

98.96

100.00

100.00

100.00

12

C3.6

Ratio of number of complaints about Waste Water treatment

#/ ‘000 pop. served

0

0

0

0

35.95

13

C3.7

Electricity consumption per m3 of waste water treated

KWh/m3

0.030

0.079

0.203

0.431

0.652

12

C3.8

Ratio of staff number to the waste water treated capacity

staff/ 1.000m3 day

1.15

1.62

4.27

10.57

14.35

13

C3.9

Ratio of staff number per person served

staff/1000 people

0.16

0.27

0.37

0.68

4.07

13

C3.10

Ratio of reuse of treated waste water

%

0

0

0.01

5.14

33.31

5

C3.11

Ratio of reuse of produced bio solids

%

100

100

100

100

100

3

C4.1

Average O & M cost per 1 m3 waste water treated

VND/m3

377

946

2,950

4,031

7,535

13

C.4.2

Power and fuel costs

%

6.41

8.40

20.50

25.64

67.66

13

C.4.3

Labor costs

%

20.07

28.94

42.19

56.86

69.78

13

C4.4

Chemical costs

%

0

2.17

3.47

7.45

24.08

13

C4.5

Other costs

%

2.41

5.58

25.74

43.11

71.62

13

C4.6

Ratio of training cost to revenue

%

0

0

0

0.01

0.86

8

C4.7

Training cost per staff

Mil. VND/staff

0

0

0

0

1.79

13

C4.8

Ratio of approved average sewerage fee to submitted one

ratio

0.0

0.6

1.0

1.0

1.00

11

C4.9

Ratio of approved average sewerage fee to submitted one

VND/m3

899

2,592

3,341

4,115

7,578

8

C4.10

Ratio of actual revenue to the revenue under the “O&M Contract)

%

66.83

93.24

99.72

100.23

100.98

8

C4.11

Operating cost coverage

%

86.91

94.99

100.29

110.77

164.79

8

C4.12

Debt service ratio

%

50.07

50.07

50.07

50.07

50.07

1

C4.13

Gross fixed assets of WWTP per person served

Mil. VND / 1.000 people

3,687.23

4,589.78

5,492.33

6,394.88

7,297.43

2





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