Document koDRYQvyx15R9XZw7azaKRR0

TECHNICAL REPORT SUMMARY " TO: TECHNICAL COMMUNICATIONS CENTER - 201-2CN (lttit~ortant-. If report i s printed on both sides of paper, send two copies to TCCJ I~lv1sloll --E-n v i r o n m e n t a l Laboratory (EE 8t P C ) - I'roiw I Commercial C h e m i c a l s D i v i s i o n Report T i t l e Acute E f f e c t of CS-2151 on Microbial 21-2W-05 Respirzit ion BACK TO MAIN Dept. Number 0535 Proloct Numlmr 9970012600 Report Number 0.3-7 SECURITY Eo$::y KEYWORDS: (Select terms from 3M Thesaurus. Suggest other applicable terms.) 0 Closed Confidential) (Special Authorization) I CURRENT OBJECTIVE: - 3M CHEMICAL REGISTRY New Chemicals Reported 0 Yes I3 No To determine i f CS-2151 has a n a c u t e i n h i b i t o r y e f f e c t on microorganisms present i n wastewater treatment sludge. EEWC DIV (Env. Lab. ) Toxic ity Microorganisms Fluorochemical Surfactant I REPORT ABSTRACT (200-250words) This abstract information is distributed by the Technical CommunicationsCanter to alert 3M'ert to Company RID. I t i s Company confidential material, The a c u t e t o x i c e f f e c t of CB-2151 on microorganisms w a s measured by adding t h e t e s t compound t o f r e s h a c t i v a t e d sludge mixer l i q u o r and monitoring the rate of oxygen d e p l e t i o n i n t h e mixture. Prior t o CS-2151 a d d i t i o n , t h e a c t i v a t e d sludge w a s brought, to n e a r oxygen s a t u r a t i o n by a i r s p a r g i n g . A t 1,000 mg/I CS-2151. had no e f f e c t o n t h e r e s p i r a t i o n r a t e of t h e microorganisms i n t h e t e s t s y s t e m . T h i s i n d i c a t e s t h e a b s e n c e of an acute t o x i c e f f e c t a t this concentration. Information Liaison 0 lniii d s : . A c u t e E f f e c t of CS-2151 Page 2 August 24, 1981 Microbial Resphation/lEAFt BACK TO MAIN Introduction T h i s r e p o r t describes tests performed on CS-2151 t o e v a l u a t e i t s acute t o x i c i t y t o a c t i v a t e d s l u d g e mixed liquor. The! report p r o v i d e s a g r a p h of t h e data g e n e r a t e d i n t h e studly. ( F i g u r e 1) Methods and Materials Environmental L a b o r a t o r y r e c e i v e d t h o t e a t sample on 11/4/80. The sample was a l i g h t , y e l l o w l i q u i d . I t was r e p o r t e d t o c o n t a i n 25% s o l i d s i n water. W. A. S c h e i l performed t h i s work i n a c c o r d a n c e w i t h t h e s t a n d a r d Environmental Laboratory p r o t o c o l ( a t t a c h e d ) . R e s u l t s and Discussion The r e s u l t s of t h e s t u d y are shown i n F i g u r e 1. The results show t h a t CS-2151 had no r e t a r d i n g o r s t i m u l a t o r y effect o n t h e oxygen d e p l e t i o n r a t e . This s u g g e s t s t h a t CS-2151 is n o t l i k e l y t o have a n acute adverse effect usage l e v e l of o t n h i w s astewate materia r l . t r e a t m e n t systems. Based on t h e l o w T h i s p r o d u c t is used a t a c o n c e n t r a t i o n of 1,400 ppm ( 3 5 0 ppm on a s o l i d s b a s i s ) . The c h e m i c a l is wasted from p l a t i n g b a t h s p r i m a r i l y is drag-out w i t h p a r t s t h a t are s u b s e q u e n t l y r i n s e d . CS-2151 wastes t h a t are sewered from usage would be g r e a t l y d i l u t e d below t h i s 1,400 ppm l e v e l and t h e wastes w o u l d be s t i l l f u r t h e r d i l u t e d i n t h e wastewater t r e a m e n t system. Thus, w e expect t h e C8-2151 c o n c e n t r a t i o n i n a wastewater t r e a t m e n t s y s t e m w o u l d norma:lly be 2 or more order8 of magnitude lower t h a n t h e 1,000 pprn c o n c e n t r a t i o n found t o have no acute i n h i b i t o r y e f f e c t i n t h i s l a b o r a t o r y test. mese r e s u l t s suggest t h a t no s i g n i f i c a n t , adverse efltect on a c t i v a t e d sudge v i a b i l i t y is likely. BACK TO MAIN OXYGEN UPTAKE RATE OF ACTIVATED SLUDGE IN THE PRESENCE OF CS2151 '7 BACK TO MAIN File: M fwge No, 62L60S ENVIRONMENTAL ENOR. LAB --WORU SHEET Hrs.: Reviewed by: NO. 340-10 DIETZGEN GRAPH PAPER IO X ? 0 PER. INCH BACK TO MAIN OIETLGEN C0R PORATION MADC IN U.S.A.