Большой Англо-русский Русско-английский политехнический словарь - отстойник

dehydration box, (ливнестока) mud box, sediment box, settling box, drip chamber, sediment(ation) chamber, settling chamber, sludge chamber, clarifier, (для сточных вод) dirt collector, sediment cup, decanter, desilter, sediment pan, sludge pan, pool, sedimentation reservoir, settling reservoir, gravity separator, settler, sump, drain trap, gravity trap, mud trap, sediment trap, silt trap, well, desilting works