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# OAR Box 

# 1865 Prepped by Charmelle Mathews



## Document

Number: 

# 36 ) IV-E-2 4 Docket Number: 

# A-83-2 7

Printed 12/3/20089:15:28AM

Sheet 36 of 105P. 2 

# RADIA N 

# A-83-2 7
CORPORATIO N 

### IV-E-2 4 TELEPHON E CAL L REPOR T

DATE : Octobe r 28 , 198 6 TO : Mr . Roge r Descoteau x

Merrima c Wast e Wate r Treatmen t Facilit y D . W . Highwa y P . 0 . Bo x23 5 Merrimac , Ne w

Hampshir e 0305 4 (603 ) 883-819 6 FROM : Philli pA . May , Radia nCorporatio n SUBJECT : Facilit y

Operatio nan

dSodiu m Scrubbe r Impac t

Mr . Descoteau xstate dtha t a t hi s treatmen t facilit y the y already hav e a sulfat e proble m

an dwoul dtherefor e no t b e permitte dt o allow an y additiona l discharge s o f sulfat e containin g effluen t int o thei r facility . Thei r presen t overloa di s du e t o a brewer y whic hdischarge s th e treate d remain s o f it s bottl e was ht o hi s facility . Th e brewer y use s sulfuri c aci d t o was hbottles , treat s th e rins e fo r pH , an dthe ndischarge s th e concentrate dsulfat e containin g effluen t t o hi s POTW . Th e Merrima c facilit y i s a 5 Mg dfacilit y

designe dt o servic e a populatio no f 20,00 0 an dth e surroundin g industry . Th e averag e dail y loadin g i s 3 Mgd . Th e POTW i s als o experiencin g extrem e H 2 

### S reemissio nproblem s i nit s dewaterin g system . Thi s problem i s wors t onth e weekend s whe nth e sludg e fro m th e dewaterin g proces s i s a t a standstil l an di s allowe dt o stagnate .

Progres s Center/320 0 E . Chape l Hil l Rd. /Nelso n Hwy./P.O . Bo x13000/Researc h Triangl e Park

. N.C

. 27709/(919)541-910 0P. 3



# Town of Merrimack , Ne wHampshir e 0305 4 Merrimac k

Wastewate r Treatmen t Facility , P.O . Bo x23 5 603/883-819 6

Jul y13 , 198 7

Mr . Philli p A . Ma

y Radia n Corporation/Progres s Cente r 320 0 E . Chape l Hil l Road/Nelso n Hwy . P.O . Bo x 1300 0 Researc h Triangl e Pk. , N.C . 2770 9 Dea r Mr . May : Pleas e b e advise d tha t I have reviewe d you r writte n record o f our conversatio n an d wis h t o mak e the following correction s an d comments . I state d tha t th e Merrimac k Wastewate r Treatmen t Facilit yalread yha s a sulfat e probleman

d tha t w e woul d requir e industrie s t o compl ywit h the loca l pretreat
men t limi t fo r sulfat e o f 25 0 mg/l . Presently , sulfat e loading s fromtwo bottl e cleaning operation s greatl yenhance s the H2 S potentia l a t ou r facility . Th e breweryuse s sulfuri c aci d t o neutraliz e a strong alkalin e wast e emanating fro mtw o bottl e washing operations , an d the n discharge s the concentrate d sulfat e containing effluen t t o the Merrimac k POTW . (Thi s discharg e occur s approximatel ytwic e a month. ) Th e Merrimac k facilit yi s a 5 MGD facilit ydesigne d t o servic e a populatio n o f 20,00 0 an

d th e surrounding industry . Th e averag e dail yloading i s 3 MGD . Th e Merrimac k POTW i s experiencing H2 S reemission s whe n dewatering our sludge . Th e wast e activate d sludg e an d primar

ysludg e i s pumpe d t o the tw o holding tank s an

d the n dewatere d o n weekdays . Th e wast e i s store d ove r the weekend . Th e tow n an d the breweryi n join t cooperatio n hav e agree d t o conduc t a stud y o f th e mos t cos t effective , technicall yefficien t I^S/sulfid e (odor ) contro l techniqu e a t the Tow n o f Merrimac k Wastewate r Treatmen t Plan t fo r two sludg e holding tanks . The stud yshal l addres s individua l option s fo r chemica l treatment , mechanica l equipmen t additions/modifications , operationa l alterations , an

d combination s o f the above . Thi s stud yshal l demonstrate , verify , an

d the n recommen

d the bes t prove n reliabl e contro l measur e fo r thes e holding tanks . Th e fina l repor t mus t addres s the projecte d capital/operating cos t fo r the selecte d option , relativ e t o othe r potentia l alternatives . I n conclusion , throug h the implementatio n o f variou s contro l techniques , suc h as , highe r p H discharge s fro mthe brewery , th e us e o f mor e potassiu mpermanganat e a t th e treatmen t facility , sulfate/sulfid e contro l studies , an d notificatio nP. 4

Mr . Philli p A . Ma

y Radian Corp . Pag e 2 7/13/8 7 procedure s whe n thes e bottl e soaker s ar e discharge d t o the sewer , the odo r problem s a t th e treatmen t facilit yhav e bee n greatl yminimized . I f yo u shoul d hav e an yfurthe r questions , pleas e fee l fre e t o cal l m e a t (603 ) 883-8196 . Cordially , 

# (jbp- 

# jm^^ Roge r Descoteaux , Industria l Wastewate r Pretreatmen t Inspecto r RD/bl s cc : Dougla s H . Starr , P.E. , Directo r o f Publi c Work s Larr yR . Spencer , Sewe r Divisio n Superintenden t