05-01-90 CCM - Laserfiche WebLink

Home Browse Search

1�rsmr Glass! et=. O: City of Lake _imc _ub Je'-'.: HLMdlin2 of Waste EXPIRED PHOTOGRAPHIC CHEMICALS As anted previously we inters to dispose of exhausted an:_omgrc _ _mamica!E by havinghavinghavy them hauled away by a IsSitimarm _. N___ disposal firm. We have n=t Vet comtractod with any specific =company. Am soon as arran:jaments have Own mace we will provide tneir i_.me and an_dreas.. THE SANDBLAST RESIST COATING As previously described, the estimated usage of R7'X emulsion is 16 fluid cc, per day (average). 75% of .this m.tpria'1 is water. Two ur_ its are involved in the handling Of this material' ii A sink: designed for spray coating the material and for stripping off the exposed resist after sandbiasing; and S? a sink': designed for washing Out the unexposed resist after exposure to a film positive. The drains of both of the above units will be connected to a collection) tank. 'His tank contains a 'float valve to maintain the \ water level at some minimum and a heater to maintain temperature ap; oonim_. ely 90 de_ F.J. Large particles of the resist. are •filtered Oy v, SGr"e%r'! a.t the 'top Gf the ta.n :. The waiver used for wash -cut is pum}pea and filtered 4rom this tank:. Tap water used for cleaning and stripping causes the tank level to rise. A maximum level in the tank: is there.+: ,_ire maintained by a second Pump. This water is filtered nefor-e it: Soon to Ve drain. A high quality disk: filter will be used for tnis purpose. Ca^tridge filters will probably be used for racy."1ins the washout water. There will be no direct connection between tne= sinks or tank and the drain:. All sc'iid resist material collected by the strainer and filters will Ge disposed of as regular solid waste. Glass, etc. seeks Lake Elmo's approval to proceed with these ;Awns. Final approval can follow inspection of the cemplcted installation. F. Brent Archer, Vice Pres. IJL_A S ETC. Inc.