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<br /> Mr-, Grote ter1 a pl.ie i.n- the affirmative. Mr-, o ] g�xam queried +�. �awas, provided...
<br /> I
<br /> there. was a terciary treatment pl :` 4irmtive
<br /> F
<br /> Keith Dobie explained about the treatment plant. Recomended most cooly i •
<br /> small. Plant that consists of septic tanks Y pre-treatment'l r�c tating biological core.
<br /> tactor for biological treatment,-+c1aftfi.er, terci.ary sfi1ter,cloronation usually
<br /> discharging into leechiang. This type of system seems' to be more reliable than-some:
<br /> of the other systems, quite frankly it16 a little more .dot. proof in its' operation
<br /> than for instance an extended air treatment plantt which can provide excellent re=y, `
<br /> µ sults but requires a lot more skill in operation, so the State in particular tends
<br /> to lean to- this type of plant.and since it works- out very well for us it I s what we�.�
<br /> recommend. e've done a number off- them- over the, years; the closest ► o yo
<br /> be li eve i.s at- the Sea Cre at Hotel j in.Falmouth.,L i f anyone- wanted to go over there� +
<br /> to 1r..1ee. that plant IS quite sure that the management over there,, if you made arae,
<br /> went s, if anyone would like,sae t with thew and a plai n the plant -'I'd be appy L
<br /> to do that, Ba8lcally,, the effluent coming out of the plant.will he treated wits
<br /> highly, the BOD,, soluble BDD,, will be down in the vicinity of which greatly exm
<br /> ceeds the DEQE requirem nts of a 30-30 affluence of this kind of plant but, we
<br /> found in order to get the nitrogen levels down, in the vicinity the DEME wants you
<br /> have to over-treat the waste from a biol.ogicarl and organic point of view. That
<br /> _•asi.call? Is the system. What we put together is not any one manufacturers package,
<br /> o I can't really show your 1 will leave a brochure that shows exactly in order to
<br /> meet State' requirements o we usually take a component here and a component them and
<br /> put together what turns out to be a fairly standard package for the State- of Masic•.,�� .
<br /> that is an RBC, Terciary sand Filter, I can leave you a couple' of broch '.es telling
<br /> about t R&I's Rptating Dilogic al Contactors, there's a simplified. schematic that. shows
<br /> the type of plant that you have and she write up on it, although it'a pretty simpli-
<br /> fled, what We're proposing is a little more complex,, l d nI t-expect you to read these
<br /> now, but leave. them for your revi„er,
<br /> I' have a copy oar- the engineers preliminary
<br /> report for the sea Crest in Falmouth, a 'also did ' one for Northeastern, I guess w - .+
<br /> can leave both of these with you o you can seg type of report that will be done prem.
<br /> limi+narily,. prior t final design. Braman Engineering will prepare a report sal ..} 'I
<br /> to this for this project to DEE for preliminary approval, at that time discuss conow
<br /> deptual approval and then final approval. Mr. Dobie showed Polaroid snaps of
<br /> plant being constructed in Cohasset. Not knowing how-familiar your are with this type
<br /> of facility I thought you milt like to see what one lcb6ks like. Mr. Buckingham
<br /> expressed his interest in the project because he had_ seen reports and what other outfitts
<br /> are doing, in other circumstances but this is our ashpee l s first experience with a
<br /> small unit. Keith Dobie said the best way, if you possibly can is to go. see Sea Crest.
<br /> C. Buckingham stated that he was glad to see that Sea Crest came through with the
<br /> plant because the last lie knew they were having trouble with the area people, he thea k
<br /> asked what the Nitrate/Nitrogen reduction was. fir. Dobie explained it was a little
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<br /> difficult to talk about nitrates because raw waste really doesn't have any nitrates-
<br /> it
<br /> itrates-it has organic, nitrogen in the forms of L proteins and other organic substances and. •.11
<br /> ammonia and during the biological process those components are broken down to nitrates
<br /> and a certain amount of that is de.-nitrified to nitrogen gas and-oxygen and so the. x
<br /> thing you really need to talk about in one of these. plants is the reduction of total F
<br /> nitrogen hrca se eventually in the ground. water all of this organic nitrogen and
<br /> ammonia i going t if it's dischar ed' into the round is going into the ground in
<br /> � g g � g g .
<br /> the form'of ni grate s it vi 11 eventually,,, even i f you treat very poorly in a waste
<br /> water treatment plant, if you limit the degree of treatment you can actually get
<br /> ef , ents very low in nitratesbecause you haven't treated enough to break down the
<br /> ammonia or the organic nitrogen into nitrates, so -basically the removal is. going to b
<br /> on total nitrogen about 70%, .70-75% and what DEQE likes to see is and Cape Cod. Plan-
<br /> /Nitrogennir who we've dealt with quite often'. they'd like t see the Nitrate in tie
<br /> g� r liter which is the . .
<br /> ground rater at the property level,,,, less than 1 mii lgnaws p
<br /> drinking grater atandard that ire can easily obtaih,- the -nitrate coming out-, of- our L
<br /> p l.ant s are about , and the a oni a i s about so you probably have toy al nitrogen. of
<br /> uut 1.5 by the time it reaches t��rouj t�,e Soil, �rou get di.lu i �n, �o�r�t: e � �o
<br /> ar
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