Discharge of wastewaters into a recipient

Discharge of waters into a recipient is permitted only to such a degree that the interests of other authorized users remain unaffected. 

Discharge of wastewaters should not result in the change of natural physical, chemical and biological properties of waters, and formation of detrimental conditions for health must be avoided. Water must be suitable for all purposes, i.e. it should have a quality which satisfies the needs of public supply and the requirements for industrial and agricultural production [19-21]. 

The quality of water in the recipients must not be influenced by the discharge of wastewaters. It is necessary to avoid 

Wastewaters from infectious hospital wards, research and examination institutions from the field of human and veterinary medicine, institutes for the production of inoculation agents, waters from slaughterhouses and leather plants, from wool washing, and from gelatine production plants, etc. must not be discharged into the recipient. Where necessary, additional disinfection or sterilization processes should be carried out. 

If wastewaters contain substances with immediate high oxygen consumption, they must be treated before being discharged into the recipient, e.g. by oxygenation. 

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