Dtmbs Bio-ethanol Da Chinh Sua

8/2/2019 Dtmbs Bio-ethanol Da Chinh Sua

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BO CO NH GI TC NG MI TR NG B SUNG Nh my s n xu t Bio-Ethanol

MC LCTrang

M U 6

I. GII THIU D N 7

I.1. Tn d n 7I.2. Ch d n 7

II. M T D N 7

II.1. V tr a l ca d n 7

II.1.1. Ta cc mc ranh gii 7

II.1.2. Gii cn d n 8

II.2. Nhng thay i v ni dung ca d n 8

II.2.1. H thng x l nc thi 8

II.2.2. H thng thu hi biogas 9

II.2.3. H thng thu gom v thot nc ca Nh my 10

II.3. Cng ngh sn xut Nh my 11

D n ch thay i cng ngh x l nc thi cn cng ngh sn xut ca nh my vn ginguyn, c th: 11

II.3.1. Quy m, sn phm Nh my 11

II.3.2. Cc hng mc cng trnh 18

II.3. Tng mc u t 20II.4. Tin thc hin 21

II.5. T chc sn xut 21

II.5.1. S t chc 21

II.5.2. Bin ch nhn s 22

II.5.3. Ch lm vic 22

III. IU KIN T NHIN, MI TRNG, KINH T - X HI 22

III.1. Hin trng mi trng 22III.1.1. Cht lng khng kh 22

III.1.2. Cht lng nc 26

III.1.3. Cht lng t 28

IV. NHNG THAY I V TC NG MI TRNG 29

IV.1. Tc ng mi trng trong giai on xy dng d n 29

IV.2. Tc ng mi trng trong qu trnh vn hnh d n 29

n v t v n: TRUNG TM K THU T QUAN TR C MI TR NG Trang 1


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IV.2.1. Cc ngun gy tc ng 29

IV.2.2. i tng, quy m b tc ng trong giai on hot ng d n 31

IV.2.3. nh gi tc ng mi trng 32

V. BIN PHP GIM THIU CC TC NG XU TRONG GIAI ON HOTNG 45

V.1. Gim thiu nhim khng kh 45V.1.1. Gim thiu nhim kh thi l hi 45

V.1.2. Gim thiu nhim kh t cng on ln men v chng ct 49

V.1.3. Gim thiu cc cht gy mi 49

V.2. Bin php gim thiu nhim do nc thi 50

V.2.1. H thng x l nc thi sinh hot 50

V.2.2. H thng x l nc thi tp trung 51

V.3. Gim thiu nhim do cht thi rn 60V.3.1. X l b sn 60

V.3.2. Cht thi rn khc 61

V.4. Gii php v sinh v an ton lao ng 62

V.4.1. V sinh lao ng v v sinh thc phm 62

V.4.2. An ton lao ng 62

V.5. Cc bin php ng ph s c chy n 63

VI. CHNG TRNH QUN L V GIM ST MI TRNG 65

VI.1. Chng trnh qun l mi trng 65

VI.1.1. Cc vn mi trng 65

VI.1.2. Cc yu cu lut php v cc yu cu khc 65

VI.1.3. Cc phng hng v mc tiu 66

VI.2. Chng trnh gim st mi trng 66

VI.2.1. Gim st cht lng khng kh v ting n 67

VI.2.2. Gim cht cht lng nc 68

VI.2.3. Gim st cht thi rn 68

VI.3. Kinh ph thc hin cc cng trnh x l mi trng v gim st mi trng 69

KT LUN V KIN NGH 70

1. Kt lun 70

2. Kin ngh 70



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DANH MC BNGBng 1: Thnh phn kh Biogas................................................................................................10

Bng 2: Cht lng v quy cch ca sn phm.........................................................................12

Bng 3: Cc hng mc cng trnh xy dng giai on I ..........................................................19

Bng 4: Chi ph u t cho d n..............................................................................................20

Bng 5: Tin trin khai d n xy dng Nh my Bio-Ethanol...........................................21

Bng 6: Kt qu cht lng khng kh khu vc d n (thng 4/2010).....................................23

Bng 7: Kt qu cht lng khng kh khu vc d n (thng 4/2009).....................................24

Bng 8: Kt qu cht lng nc ngm khu vc d n (thng 4/2010)...................................26

Bng 9: Kt qu cht lng nc ngm khu vc d n (thng 4/2009)...................................27

Bng 10: Kt qu cht lng t khu vc d n (ngy 16/4/2010)..........................................28

Bng 11: Kt qu cht lng t khu vc d n (ngy 16/4/2009)..........................................28

Bng 12: Cc ngun gy tc ng v cht gy nhim mi trng khng kh .......................30

Bng 13: Cc ngun gy tc ng v cht gy nhim mi trng nc................................31

Bng 14: i tng, quy m b tc ng trong giai on hot ng........................................31

Bng 15: H s nhim i vi qu trnh t than .................................................................32

Bng 16: Nng cc cht nhim kh thi l hi..................................................................33

Bng 17: Tc ng ca cc cht nhim khng kh ................................................................38

Bng 18: Nng ca nc thi dch hm cha x l.............................................................39

Bng 19: H s nhim do mi ngi hng ngy sinh hot a vo mi trng (nc thisinh hot cha qua x l)..........................................................................................................40

Bng 20: Ti lng v nng cc cht nhim sinh ra t nc thi sinh hot (cha qua xl) trong giai on hot ng ca Nh my .............................................................................40

Bng 21: Nng cc cht nhim trong nc ma chy trn ..............................................41

Bng 22: Tc ng ca cc cht nhim trong nc thi........................................................42

Bng 23: Cc s liu u vo tnh ton m hnh.......................................................................45

Bng 24: Kt qu tnh ton cao ng khi v nng cc i ti mt t............................46

Bng 25: Lu lng cc dng nc thi ca Nh my.............................................................51Bng 26: Nng cc cht nhim ca nc dch hm cha x l........................................52

Bng 27: Danh mc cc hng mc, thit b...............................................................................59

Bng 28: Chng trnh gim st mi trng d kin cho Nh my.........................................67

Bng 29: Kinh ph d kin cho cc cng trnh x l mi trng..............................................69



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DANH MC HNHHnh 1: S khi lu trnh sn xut Bio-Ethanol ca Nh my sn xut Bio-Ethanol .........14

Hnh 2: S t chc Nh my Bio-Ethanol............................................................................21

Hnh 3: Kt qu tnh pht tn nhim bi t kh thi l hi.....................................................35

Hnh 4: Biu phn b nng bi theo hng gi .............................................................35

Hnh 5: Kt qu tnh pht tn nhim SO2 t kh thi l hi...................................................35

Hnh 6: Biu phn b nng SO2 theo hng gi ...........................................................36

Hnh 7: Kt qu tnh pht tn nhim kh NO2 t kh thi l hi............................................36

Hnh 8: Biu phn b nng NO2 theo hng gi ..........................................................36

Hnh 9: S h thng x l bi t kh thi l hi..................................................................47

Hnh 10: Nguyn l cu to h thng lc bi l hi.................................................................47

Hnh 11: Ton b h thng lc bi l hi.................................................................................48

Hnh 12: S h thng x l nc thi tp trung ca Nh my.............................................52

Hnh 13: B tuyn ni DAF......................................................................................................55

Hnh 14: B SAR.......................................................................................................................55

Hnh 15: S h thng x l bn cn.....................................................................................58

Hnh 16: H thng sy sn phm b hm kh...........................................................................61



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CC CH VIT TT

BOD : Nhu cu oxy sinh hc

BTNMT : B Ti nguyn & Mi trng

CDM : C ch pht trin sch

COD : Nhu cu oxy ha hcCP : C phn

DO : Oxy ha tan

TM : nh gi tc ng mi trng

VT : n v tnh

EMC : Trung tm K thut Quan trc Mi trng

KKT : Khu kinh t

NMLD : Nh my lc duN-CP : Ngh nh Chnh ph

KPH : Khng pht hin

PCCC : Phng chy cha chy

QCVN : Quy chun Vit Nam

Q : Quyt nh

SS : Cht rn l lng

TCVN : Tiu chun Vit Nam

TP : Thnh ph

VOC : Cht hu c d bay hi

VN : Vit Nam ng

UBND : y ban Nhn dn

WHO : T chc Y t th gii

XLNT : X l nc thi



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M U

D n Nh my sn xut Bio-Ethanol c u t bi Cng ty C phn Nhinliu sinh hc Du kh min Trung thuc Tp on du kh quc gia Vit Nam. D n c y ban Nhn dn tnh Qung Ngi cp Quyt nh s 1015/Q-UBND ngy

25/6/2009 v vic ph duyt bo co nh gi tc ng mi trng.Trong qu trnh trin khai d n, Cng ty C phn Nhin liu sinh hc Du kh

min Trung gp kh khn trong vic gii phng mt bng. Trn c s chp thun caTp on du kh Vit Nam v y ban nhn dn tnh Qung Ngi, Ban qun l Khukinh t Dung Qut iu chnh a im u t d n Nh my sn xut Bio-Ethanol nhin liu. Vi s thay i a im d n, Cng ty C phn Nhin liu sinhhc Du kh min Trung tin hnh lp Bo co nh gi tc ng mi trng bsung v c y ban nhn dn tnh Qung Ngi ph duyt ti vn bn s 1657/Q-

UBND ngy 23/10/2009.Tuy nhin, sau khi xem xt v tnh ton mi tng quan gia li ch kinh t v

bo v mi trng, Ch u t thy rng cng ngh c c bc hi khng em lihiu qu nh mong mun. ng thi theo ch o ca Tp on Du kh Vit Namyu cu cn thit phi c s ng nht v quy trnh, cng ngh sn xut cng nhcng ngh x l cht thi ca cc Nh my sn xut Nhin liu sinh hc ca Tpon.

V vy, Cng ty C phn Nhin liu sinh hc Du kh min Trung quyt nhiu chnh cng ngh x l nc thi ca Nh my sn xut Bio-Ethanol, chuyn tcng ngh c c bc hi sang cng ngh x l sinh hc, ng thi tin hnh k kthp ng vi Trung tm K thut Quan trc Mi trng lp bo co nh gi tcng mi trng b sung theo quy nh ti im a khon 1 iu 13 ca Ngh nh s80/2006/N-CP ngy 09 thng 8 nm 2006 ca Chnh ph v vic quy nh chi tit vhng dn thi hnh mt s iu ca Lut Bo v mi trng. S Ti nguyn v Mitrng tnh Qung Ngi l n v c chc nng t chc thm nh v tham mu cho

UBND tnh Qung Ngi cp Quyt nh ph duyt Bo co TM ny.



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I. GII THIU D N

I.1. Tn d n

D N U T XY DNG CNG TRNHNH MY SN XUT BIO - ETHANOL

I.2. Ch d nCng ty C phn Nhin liu sinh hc Du kh min Trung

a ch: S 01 An Dng Vng - TP Qung Ngi - tnh Qung Ngi

Tng Gim c: ng H S Long

in thoi: 055.3714180 3714181 Fax: 055.3714182

II. M T D N

II.1. V tr a l ca d n

Nh my sn xut Bio-Ethanol nm trn khu t c din tch 24 ha, thuc i 1& 2, thn ng L, x Bnh Thun, huyn Bnh Sn, tnh Qung Ngi.

II.1.1. Ta cc mc ranh gii

Giai on I: Din tch t l 14,87ha, vi ta cc mc ranh gii (VN2000) nh sau:

M1 (170007.27; 587154.94)

M2 (1699927.28; 587465.69)M3 (1700225.06; 587602.80)

M4 (1700231.69; 587600.35)

M5 (1700365.12; 587310.38)

M6 (1700358.07; 587296.41)

M7 (1700204.99; 587243.81)

M2' (1699824.30; 587418.27)M13' (1699975.05; 587090.81)

M13 (1700002.35; 587087.24)

Giai on II: Din tch t l 9,13 ha, vi ta cc mc ranh gii (VN2000) nhsau:

M2' (1699824.30; 587418.27)



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M8 (1699772.18; 587394.27)

M9 (1699729.72; 587389.68)

M10 (1699606.01; 587431.88)

M11 (1699567.63; 587144.12)

M12 (1699731.58; 587122.67)

M13' (1699975.05; 587090.81)

II.1.2. Gii cn d n

- Pha ng cch hnh lang tuyn ng ca NMLD khong 90m;

- Pha Ty cch tuyn ng V Vn Kit khong 800m;

- Pha Bc gip ng dn sinh v i ni thn ng L;

- Pha Nam gip vi khu t quy hoch khu ho cht ha du.

(S v tr d n nh km phn ph lc)

II.2. Nhng thay i v ni dung ca d n

D n u t xy dng cng trnh Nh my sn xut Bio-Ethanol ca Cng tyCP Nhin liu sinh hc Du kh min Trung c s iu chnh v cng ngh x lnc thi t cng ngh c c bc hi sang cng ngh x l sinh hc.

II.2.1. H thng x l nc thi

(1). Khi qut cng ngh x l nc thi bng phng php c c bc hi

Hm thi qua ly tm c bm i lm ngui bng thit b trao i nhit dngtm nhm h nhit xung 36 - 40 0C v c iu ha H iu ha. Ti Hiu ha, nc thi c khy trn v sc kh lin tc lm gim mt phn nng COD, BOD v trnh hin tng ln men ym kh xy ra. Sau hm thi c bmln 08 bn x l k kh thu hi Biogas. Khi i qua lp bn k kh, cc cht hu c s

b phn hy nh enzyme c tit ra t chnh t bo vi sinh vt, ln men mtan. Kt

qu ca qu trnh phn hy ny to ra cc axt bo d bay hi, nc, kh mtan v cckh khc. Kh mtan bay ln c thu hi lm nhin liu cho l hi. Nc thi saux l ym kh s c chuyn sang cng on c c bc hi.

Nc thi c c c theo phng thc trao i nhit ngc chiu trong hthng bc hi nhiu ni kiu mng ri ni tip nhau. Ni cui cng c gia nhittrc tip bng hi, cc ni cn li c gia nhit bng chnh ni hi trc . Phn



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Xyr thu c t qu trnh c c s c bn cho cc n v bao tiu nh k thugom cung cp cho cc c s sn xut phn bn.

(2). Khi qut cng ngh x l nc thi bng phng php sinh hc

Cng ngh x l nc thi bng phng php sinh hc ca Nh my Bio-

Ethanol c m t qua 4 giai on: X l bc 1 (x l s b):

- Thit b trao i nhit (TN)

- B iu tit 1 (iu chnh nhit , pH v lu lng nc thi)

- Thit b tch SS kiu lng quay (FRG)

- Tuyn ni cp 1

- B phn hu k kh thu hi Mtan (b SAR, UASB) X l bc 2

- B iu tit 2

- B x l hiu kh sc kh.

- B lng

X l bc 3

- Tuyn ni cp 2- Lc ct

- Kh trng, lm sch nc thi

X l bn

Nn p v tch nc lm gim m ca bn bng my p bn bng ti.

Nc thi sau x l t cht lng nc x thi theo QCVN 24:2009/BTNMT,ct B (Kq = 0,9, Kf = 1) - Nc thi cng nghip.

II.2.2. H thng thu hi biogas

Biogas sinh ra t qu trnh phn hy k kh cc cht hu c trong b SAR vUASB. Tng lng Biogas sinh ra c tnh trn 70.000 Nm3/ngy (t b SAR: 64.000

Nm3/ngy, UASB: 6.000 Nm3/ngy). Lng kh Biogas thu c t cc b k khc dn qua h thng ra H2S v tch nc, sau c cha trong thng cha

biogas trc khi vn chuyn n l hi.



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Khi l hi gp s c hay lng kh Biogas sinh ra d so vi nhu cu hin tica l hi th lc kh Biogas s c t ti uc, ti uc c trang b thit b nhla t ng c kh nng t ng t chy khi c kh Biogas d. m bo tnh anton cho h thng x l, khong cch t uc t n cc cng trnh nh sau:

- Khong cch n ngun in t nht 20m

- Khong cch n khu vc kho cha cc cht gy chy t nht 50m

- Khong cch n b x l k kh 25m.

Bng 1: Thnh phn kh Biogas

Thnh phn T l

CH4 55%-60%

CO2 38%-43%

N2 0,3%H2 0,1%

H2S 0,2%

Ngun: Bo co thuyt minh cng ngh XLNT, nm 2010

II.2.3. H thng thu gom v thot nc ca Nh my

H thng thot nc ca Nh my c thit k m bo thu gom ton b ncthi, nc ma chy trn qua cc khu vc. Ton b nc ma nhim bn v nc thi

ca Nh my sau khi c thu gom v x l s dn vo h thng thot nc chungD2000.

Chi tit thit k h thng cng D2000 vi cc h ga v kt cu cng c thhin trong bn v thit k chi tit tuyn cng D2000.

(S thit k h thng cng thot nc D2000 nh km phn ph lc).

(1). Thot nc ma

Nc ma chy qua cc khu vc khng b nhim bn bi du m, ho cht sc thu gom vo cc rnh thot nc dc theo cc con ng bao xung quanh Nhmy. H thng thot nc ma c xy bng b tng chu lc, nc chy trn sc thu gom v c cc song chn loi b cn, rc bn trc khi chy vo h thngcng thot nc chung ca Nh my.

Nc ma chy qua cc khu vc c kh nng nhim nh: Khu vc thng chasn phm ethanol, khu vc cha DDFS, khu cha ho chts c thu gom vo cc



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rnh b tr xung quanh v vo mt h thu sau s c bm n phn xng xl nc thi tp trung ca Nh my.

(2). Thot nc thi

Nc thi t cc phn xng, nc thi nhim du t cc khu vc sn xut,

nc thi sinh hotc thu gom vo h thng cng rnh thot nc v chy voh thu, sau c bm n phn xng x l nc thi chung ca Nh my.

Ton b nc thi ca Nh my c thu gom v h thng x l tp trung,nc thi sau khi x l t QCVN 24:2009/BTNMT ct B, s c bm vo h thngcng thot nc thi D2000.

Nc thi sau khi c bm vo h thng cng D2000 s chy vo h thngthot nc chung dc tuyn Tr Bnh-Cng Dung Qut. Ti v tr x vo h thngmng thot nc ca Khu kinh t Dung Qut b tr cc h ga gim lu lng vthu gom cn, cng nh lm v sinh v d bo tr khi cn thit.

V tr u ni vo h thng thot nc chung tuyn Tr Bnh-Cng Dung Qutc ch ra trong bn v nh km.

(S v tr u ni thot nc thi nh km phn ph lc)

II.3. Cng ngh sn xut Nh my

D n ch thay i cng ngh x l nc thi cn cng ngh sn xut ca nh

my vn gi nguyn, c th:II.3.1. Quy m, sn phm Nh my

(1). Quy m sn xut

Cng sut nh my: 100.000.000 lt Bio-Ethanol/nm, trong :

Nguyn liu chnh: Sn lt

Nhu cu sn lt: 240.000 tn/nm,

Ngun thu mua nguyn liu ti khu vc Ty Nguyn v Nam Trung B.(2). Sn phm ca d n

(a) Sn phm chnh

- Sn phm chnh ca d n l: Bio-Ethanol ( 99,8%v/v): 100.000.000 lt/nm.

- Cht lng v quy cch ca sn phm Bio-Ethanol nhin liu nh sau:



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Bng 2: Cht lng v quy cch ca sn phm

Ch tiu Cht

lng

Ethanol (% th tch) >92,1%

Methanol (% th tch)

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Dtmbs Bio-ethanol Da Chinh Sua