Compliance with our Thames Water Trade Effluent Permit (WHITECHAPEL) Can go down the May be acceptable Can never go down the sink Sink Small volumes Limited amounts Petrol (and similar) of relatively with chemical Calcium carbide innocuous oxygen demand Thiourea and derivatives chemical e.g. oils, solvents Non-biodegradable detergents. solutions that Water containing Temperature exceeding 43.3 oC would no solids (suspended pH less than 6 or greater than 11. longer be or settleable) SCHEDULE 1 PRESCRIBED SUBSTANCES classed as Saponifiable Mercury and its compounds hazardous Cadmium and its compounds material e.g. gamma-Hexachlorocyclohexane following lipids* DDT moderate Sulphates Pentachlorophenol dilution. Available Hexachlorobenzene Well diluted Hexachlorobutadiene chlorine* Aldrin biodegradable Unsaponifiable Dieldrin disinfectants material* Endrin and washing Ammoniacal Carbon Tetrachloride up liquids. Polychlorinated Biphenyls nitrogen* Dichlorvos Clean waste Total phosphorus 1, 2-Dichloroethane water. * Trichlorobenzene Water from Sulphide* Atrazine hand washing. Simazine Tributyltin compounds Check with Health Triphenyltin compounds and Safety Trifluralin Directorate if unsure Fenitrothion Check with Azinphos-methyl Health and Malathion *Indicates very low Safety consent level –check Endosulfan concentration. Must not reach discharge point exceeding Directorate if unsure Temperature of 43.3 oC pH less than 6 or greater than 11. In an emergency contact Security 020 7882 3333 HSD 020 7882 3368 or 5701 Thames Water 0800 316 9898
Compliance with our Thames Water Trade Effluent Permit (WHITECHAPEL) Can go down the Sink May be acceptable Can never go down the sink Small volumes of relatively innocuous chemical solutions that would no longer be classed as hazardous following moderate dilution. Well diluted biodegradable disinfectants and washing up liquids. Clean waste water. Water from hand washing. Check with Health and Safety Directorate if unsure Limited amounts with chemical oxygen demand e.g. oils, solvents Water containing solids (suspended or settleable) Saponifiable material e.g. lipids* Sulphates Available chlorine* Unsaponifiable material* Ammoniacal nitrogen* Total phosphorus * Sulphide* Check with Health and Safety Directorate if unsure *Indicates very low consent level –check concentration. Petrol (and similar) Calcium carbide Thiourea and derivatives Non-biodegradable detergents. Temperature exceeding 43.3 oC pH less than 6 or greater than 11. SCHEDULE 1 PRESCRIBED SUBSTANCES Mercury and its compounds Cadmium and its compounds gamma-Hexachlorocyclohexane DDT Pentachlorophenol Hexachlorobenzene Hexachlorobutadiene Aldrin Dieldrin Endrin Carbon Tetrachloride Polychlorinated Biphenyls Dichlorvos 1, 2-Dichloroethane Trichlorobenzene Atrazine Simazine Tributyltin compounds Triphenyltin compounds Trifluralin Fenitrothion Azinphos-methyl Malathion Endosulfan Must not reach discharge point exceeding Temperature of 43.3 oC pH less than 6 or greater than 11. In an emergency contact Security 020 7882 3333 HSD 020 7882 3368 or 5701 Thames Water 0800 316 9898
QMUL_HS_145_WC-Trade-Effluent-Guide.docx