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PROCUREMENT TREATMENT RECOVERY DISCHKRGE
H E VINALL Ian M E Aitken B Sc C E1g M I C E M I Mech E M I E E M 1 w_E M Cons
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absorptiometer acid activated sludge aeration aluminium chlorohydrate ammonia automatic biological boiler carbon chemical chlorine chromium clariﬁer concentration cost cyanide desalination dilution discharge disposal dissolved oxygen effluent EFFLUENT AND WATER effluent treatment eﬁluent electrode electrode potential Engineering equipment eutrophication ﬁeld ﬁgure ﬁlter ﬁltration ﬁnal ﬁrst flocculation ﬂow gallons increase industrial installation instrument ion-exchange laboratory lake LIGHTNIN Limited liquid liquor London measured ment meter methods mg/l nitrogen operation organic oxidation Paxman phosphate pipe pollution control problems production pump puriﬁcation range Reader service recirculation redox reduced removal resin rinse water river authority sample sewage treatment sodium solution speciﬁc standard Sulphate sulphuric acid suspended solids tank Telephone Telex temperature tion trade effluent treated treatment plant turbidity unit valve waste treatment Water Pollution water resources water supply water treatment