Services

Sewage and Oily Water Sampling and Testing

International Maritime Organization (IMO) published MARPOL 73/78 in 1973, and the Ministry of Environmental Protection of the People’s Republic Of China and the Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China published  Discharge Standard For Water Pollutants From Ships (GB/3552-2015), which entered into force from 01st July 2018, states that ships must comply to below requirements while discharge oily water, sewage, poisonous water and garbage.

1 Limit Value of Ship’s Sewage Discharge

Installation/re-installation Time of Sewage Treatment Unit

No.

Items of Pullutant

Limite Value

 

Before 01st Jan. 2012

1

BOD5 (mg/L)

50

2

Suspended Substance(mg/L)

150

3

Thermotolerant colirorms(cfu/L)

2500

 

After 01st Jan. 2012

1

BOD5 (mg/L)

25

2

Suspended Substance (mg/L)

35

3

Thermotolerant colirorms(cfu/L)

1000

4

CODCr (mg/L)

125

5

PH

6~8.5

6

Total chlorine (Total Residual Chlorine) (mg/L)

<0.5

 

After 01st Jan. 2012 (Passengers ship)

1

BOD5 (mg/L)

20

2

Suspended Substance(mg/L)

20

3

Thermotolerant colirorms(cfu/L)

1000

4

CODCr (mg/L)

60

5

PH

6~8.5

6

Total chlorine (Total Residual Chlorine) (mg/L)

<0.5

7

Total Nitrogen(mg/L)

20

8

Ammonia Nitrogen(mg/L)

15

9

Total Phosphorus(mg/L)

1.0

 

2.Limit Value of Ship’s Oily Water Discharge

No.

Items of Pullutant

Limit Value

1

Petroleum hydrocarbons(mg/L)

15

 

CTI Marine Environmental Services

  • Sampling and Laboratories Testing (5-7 days)
  • Testing items

--- BOD5
--- Suspended Substance
--- Heat Stabile Escherichia Coli(cfu/L)
--- CODCr
--- PH
--- Total chlorine (Total residual Chlorine)
--- Petroleum hydrocarbons 

We have more than 1000 testing methods that compliance with the requirement of Ministry of Environmental Protection of China and USEPA.

For further enquiry, you are welcome to contact us