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Wastewater Treated Effluent Discharge Standards in Different Countries

According to Environmental Law of Seychelles: Environment Protection Act 1994, Environment Protection (Standards) Regulations, 1995, the Seychelles Standard for the Discharge of Effluents to a recipient system from any industry, operation or process are as follows:

S.I. 83 of 1995
ENVIRONMENT PROTECTION ACT, 1994
(Act 9 of. 1994)
Environment Protection (Standards)
Regulations, 1995


EFFLUENT QUALITY STANDARD

Parameters Maximum concentration in milligram Per litre (mg/1) unless otherwise stated
(except pH)
Temperature 30oC measured at the point of
Discharge
PH
5.5 ĘC 8.5
Suspended Solids
30
BOD5 at 20oC
30
COD
80
Free Chlorine (as Cl-) 0.5
Phosphorus (as PO4?) 5
Nitrate (as NO?) 15
Nitrite (As NO?) 1
Phenols 0.1
Chromium (total) 1.0
Arsenic (total) 0.1
Mercury (total) 0.05
Cadmium (total) 0.2
Lead (total) 0.9
Copper (total) 1
Zinc (total) 2
Iron (total) 5.0
Nickel (total) 1
Aluminum (total) 1
Tin (total) 0.1
Manganese (total) 2.0
Oil and grease 10
Total coliforms 500/100ml
Faecal coliforms 100/100 ml
Faecal streptococcus 100/100 ml
Salmonella Must not be detectable in any 100
ml sample
Pesticides In accordance with the law relating to
pesticides which may be inforce

3. Sampling

For the purpose of this Standard sampling shall be carried out in accordance
with the British Standards 6068 ĘC Guidance on Sampling of Waste Waters:
Section 6.10: 1993, unless otherwise specified by the Authority.

4. Reference Methods of Analysis
For the purpose of this standard, the Reference Methods of Analysis shall be
based on the methods, as adopted by the Laboratory established or recognised
under section 26 of the Act.
MADE this 10th day of August, 1995.


Download the Seychelles Environmental Laws related to Effluent Discharge Standards documents in pdf format:

1. Seychelles Environment Protecion Action 1994 (File size: 298 Kb)

2. STANDARD OF EFFLUENT DISCHARGE QUALITY(File size: 46.5 Kb)

3. STANDARD OF EFFLUENT DISCHARGE QUALITY(File size: 186 Kb)


Related links:

1. ENVIRONMENT PROTECTION ACT
http://www.env.gov.sc/ENVIRONMENT_PROTECTION_ACT.pdf
2. Seychelles environmental Act: http://faolex.fao.org/cgi-bin/faolex.exe?rec_id=003516&database=FAOLEX&search_type=link&table=result&lang=eng&format_name=@ERAL