qui trinh sx nuoc tinh khiet dong chai 0166
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Quy trinh san xuat nuoc tinh khiet dong chaiTRANSCRIPT
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B GIO DC V O TOTRNG I HC BNH DNG
KHOA CNG NGH SINH HC
Bi Thuyt Trnh
TI:
QUI TRNH SN XUT NC KHONG NG CHAI
GVHD: Th.s:Dng Ngc DipSVTH: NHM 2
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SVTH: 1.Nguyn Cng Bng 08070105 2.L Minh Nht 08070116 3.Bi Th Thanh Thy 08070124 4.V Trung Kin 08080126 5.Phm Minh Hng 08070135 6.Dng L Thu 08070138 7.Nguyn Th Khnh Sinh 07080155 8.Bi Minh Tin 08070196 9.Nguyn Danh Sn 08070203
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I. Khi nim nc khongII. Cc thnh phn c trong nc khongIII. Qui trnh sn xut nc khong ng chaiIV. Kt lun
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Lut khong sn nc khongl Nc thin nhin di t,c ni l ra trn mt t, ccha mt s hp cht c hottnh sinh hc vi nng caotheo quy nh ca Tiu chunVit Nam hoc theo tiuchun nc ngoi c Nhnc Vit Nam cho php pdng.
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Nc khong l loi nc thinnhin c thnh phn v tnh chtc bit, nh cha mt s hpphn mui - ion, kh, cht hu cvi hm lng ln, nhit vtnh phng x cao..., c hot tnhsinh hc nn c tc dng chabnh hoc tc ng tt n sckho con ngi.
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C th chia nc khong thnh hai loi: Nckhong cha bnh c khong ho cao khng vtqu ng trng ca huyt thanh hoc c mt haynhiu hp phn c tc dng c l mnh (loi nykhi ung cn c ch nh ca bc s)
Nc khong gii kht c khong ho thp, tcdng dc l nh, c th s dng rng ri
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Na + 55 HCO3- 105
K + 2 Cl - 4,5
Ca ++ 1,6 SO4-- 6,5
Mg ++ 0,02 F- 1,7
Fe < 0,01 NO3-
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Axt Metasilisic : vi hm lng 110 mg/l di dng khng thuphn c tc dng mnh i vi nhiu loi bnh thn kinh, t thp,ph khoa, bnh do chn thng, gip cho h thn kinh vn ngtt.
- Flo : Hm lng thp (1,7mg/lt ) so vi quy nh Nc khongng chai, hm lng ny c tc dng chng su rng rt tt, dnglu di khng s gy bnh Fluorose.
- Bicarbonat Natri v Kali: c tc dng gy t v gim au vimmc d dy, chng ln men, y hi, gim axit trong d dy.
- Clorua cao dng di dng tm ngm hoc ung c tc dng ttn tun hon ngoi vi, tng bi tit nc bt v dch v, kch thchnhu ng rut, tng bi tit Ure.
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- Calcium gip cho xng cng, rng tt v c bpkhe mnh.
- Magnesium tham gia vo cc phn ng xc tc vknh thch thn kinh.
- Potassium duy tr s cn bng pH v cn thit chocc phn ng ho hc sn sinh nng lng trong c th.
- Sodium duy tr s cn bng lng cht lng trong cth v gip cho s vn ng ca h thn kinh.
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1. X l ngun nc 2. Lc thm thu ngc 3. Ti dit khun bng tia cc tm 4. Giai on cui: ng chai
Hnh III.1: h thng x l nc khong
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Hnh III.2: S dy chuyn sn xut nc ung ng chai tngun nc sau khi c x l s b
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Ty theo quy m sn xut, nh u t c th chnngun nc thch hp. Nu sn xut vi khi lngln, nn chn ngun nc ging ngm. Nc ngmthng c cht lng n nh, thun tin cho vic xl v chi phi thp hn so vi x l cc ngun nckhc.
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c ngun nc ngm khng b nhim khun, hmlng kim loi nng, phenol, cht phng x nmtrong tiu chun nc sinh hot l rt kh nn trc khia vo sn xut, bt buc phi lm xt nghim tngth v ty theo kt qu, c th phi qua mt hoc nhiucng on x l sau:
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Nc c chy qua b lc vi vt liu l cc cht ckh nng xy ha mnh chuyn st 2 thnh st 3,kt ta v c x ra ngoi. Qu trnh ny cng ngthi x l mangan v mi hi ca kh H2S(nu c). Sau, nc c a vo sn xut hoc tip tc phi xl
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Nc th c x l lc qua h trao i ion (CationAnion), c tc dng lc nhng ion dng (Cation):Mg2+, Ca2+, Fe3+, Fe2+, V nhng ion m (Anion)nh: Cl-, NO3-, NO2-,... Nc c x l qua h thngny s c a vo bn cha hoc tip tc c x l
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Dng b lc t ng xc x vi nhiu lp vt liu loi b bt cn th trn 5 micron, kh mi v mu(nu c):
Cc giai on trn thc cht l bo v, tng tuith ca h thng mng RO trong cng on sn xutchnh sau y
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Nc c bm (cao p) qua h thng mng thmthu ngc (Reverse Osmosis).
Ty theo ch iu chnh, mng RO s cho khong25 - 75% lng nc tinh khit i qua nhng l lccc nh.
Phn nc cn li, c cha nhng tp cht, nhng ionkim loi ... s c x b hoc c thu hi quayvng.
Phn nc tinh khit khng cn vi khun, virus vcc loi khong cht t tiu chun nc ng chai sc tch tr trong bn cha kn.
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Nc t ni sch n ni c nng mui cao hn
p sut cao y nc qua mng, n ni tinh khit
Hnh 2. Qu trnh lc nc qua mng RO
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L mt mng mng lm t vtliu Cellulose Acetate,Polyamide hoc mng TFC cnhng l nh ti 0.001micron. Tt c cc mng nyu chu p sut cao nhngkh nng chu pH v chlorinekhng ging nhau, ty theotng nhn hiu. Mng lc RO
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Vi tc v p lc cc ln,dng nc chy lin tc trnb mt ca mng RO. Mtphn trong s nhng phn tnc chui qua c nhngl lc. Cc tp cht b dngnc cun tri v thi b rangoi. Vi cch thc ny, bmt ca mng RO lin tcc ra sch v c tui thti 5 nm. Hinh 3: Mng lc RO
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Trong qu trnh lu tr,nc tinh khit c khnng b nhim khun tkhng kh nn troc khing chai rt cn titit trng bng tia UV(Ultra-violet light) dit khun.
Sau a qua hthng lc tinh 0,2m loi b xc vi khun(nu c)
Hnh 4: h thng lc bng tia cc tm
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Quy trnh: Cho ncchy qua mt ng kntrong c lp n cctm. Cc tia UV cphng vo dng nc.Cu trc DNA/RNA cavi sinh b thay i lmcho chng khng th tnti v sinh sn
Thit b lc nc bng tia cc tm
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Tia cc tm mt tn s nht nhc th dit 99,99% vi khun nhngkhng loi b bt k tp cht g ctrong nc. Phng php ny sdng in v thng c ng dng cng on cui cng ca h thnglc nc. Khc vi un si, phngphp ny tit kim in v nhanhhn nhiu. y l phong php x lan ton nu kt hp thm vi loi lcThan hot tnh.
Mt on DNA ca vikhun trc khi b chiutia cc tm.
on gen b ph hy
Hnh 5: on DNA caVK b ph hy
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4.1. Chun b np: Np c ly t kho a vo khu vc ra np ra bng
nc thnh phm qua 04 giai on nh: Giai on 1: Kim tra, ra ln 01 loi b cn trong qu trnh
vn chuyn, ln 2 ra sch chuyn qua giai on 2. Giai on 2: Ngm np ra bng dung dch tit trng. Giai on 3 v 4: Tng t nh giai on 1 v 2. Sau
a vo ngn cha np trong h thng chun b sn xut.
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4.2. Chun b v bnh. Giai on 1: V bnh c tp trung ti
phng s ch ch ra sch s, xc raln th nht bng ha cht tit trngdng cho thc phm.
Giai on 2: Tit trng v bnh. V bnh tip tc c a vo my t
ng sc ra v phi trng li bng ncthnh phm (nc tinh khit).
Ha cht tit trng phi l loi ckim nghim, c tnh st trng mnhnhng khng li mi, phn hynhanh, khng nh hng n cht lngnc.
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Giai on 3: V bnh c chuyn qua my chitnc, ng np t ng.
Giai on 4: Bnh c a qua bng ti, lc ny bphn KCS s kim tra bnh ln cui trc khi a rathnh phm.
Giai on cui Bnh thnh phm c chuyn quakho trung chuyn. B phn m bo cht lng kimtra ln cui. Sau hai ngy c kt qu kim nghimchuyn qua kho bo qun v phn phi.
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Vic ghi nhn i vi nckhong thin nhin phi thchin theo TCVN 7087: 2002 ghinhn thc phm bao gi sn.
Tn gi ca sn phm phi lNc khong thin nhin kthp vi tn gi thng mi hoca danh ca ngun nc
Ghi nhn
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Ghi ln nhn cc thnh phn c trng ca nckhong thin nhin:
Hm lng tng cht rn ha tan Hm lng natri Hm lng canxi Hm lng kali Hm lng magi Hm lng it Hm lng florua Hm lng HCO3
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Khi sn phm cha nhiu hn 1mg/l florua th phi ghitrn nhn l c cha florua. Khi sn phm cha nhiuhn 2,0 mg/l florua th phi ghi trn nhn l Sn phmkhng thch hp cho tr di 7 tui.
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Nc khong thin nhin ng chai c bo qun iu kin bnh thng. Trnh nh nng trc tip camt tri.Nc khong thin nhin ng chai c vn chuynbng cc phng tin vn chuyn kh, sch, c muiche trnh c ma nng, khng lm nh hng ncht lng sn phm.
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Nc khong l mt loi thc ung rt tt cho sckhe con ngi b sung nhiu khong cht. Tuynhin khng c dng thay nc mc d khongcht c vai tr v cng quan trng vi c th nhngnu qu lm dng, n cng gy nhng hu qu xu chosc khe
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http://nuocvutru.com.vn/san-pham/he-thong-day-chuyen-nuoc-tinh-khiet-ro/day-chuyen-loc--nuoc-tinh-khiet-ro-1000l-h-2-cap.aspx
http://vneconomy.vn/20100402115037717P5C9917/nuoc-khoang-vinh-hao-thuong-hieu-tu-truyen-thuyet.htm
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