Kế hoạch bảo vệ môi trường Lâm Thịnh Hào

CNG TY C PHN SN XUT THNG MI DCH V

XUT NHP KHU THANH PHT

-------------------------

K HOCH BO V MI TRNG

CA

D N VN PHNG KT HP NH

a ch: 212/158/246 Nguyn Vn Nguyn, Phng Tn nh, Qun 1, Tp HCM

Nm 2015



-------------------------

K HOCH BO V MI TRNG

CA

D N VN PHNG KT HP NH

a ch: 212/158/246 Nguyn Vn Nguyn, Phng Tn nh, Qun 1, Tp HCM

Nm 2015

Ch u t

CNG TY CP SX TM DV


Gim c

H VN THANH

n v t vn

CNG TY TNHH DV PT KT MT

CNG NGH MI

Gim c

HONG VN C

K hoch bo v mi trng 2015

Cng ty TNHH Sn Xut Thng Mi Dch V Xut Nhp Khu Thanh Pht Trang 1

CNG HA X HI CH NGHA VIT NAM

c lp T do Hnh Phc

Thnh ph H Ch Minh, ngy thng 11 nm 2015

Knh gi: y ban Nhn dn Qun 1, Tp.HCM

Xin gi n qu y ban nhn dn qun 1 k hoch bo v mi trng ng k vi

cc ni dung sau y:

I. THNG TIN CHUNG

1.1. Tn d n

VN PHNG KT HP NH

1.2. Tn ch d n



1.3. a ch lin h

a ch: 212/158/246 Nguyn Vn Nguyn, Phng Tn nh, Qun 1, Tp. HCM

1.4. Ngi i din theo php lut:

Ngi i din: ng H Vn Thanh

Dn tc: Kinh Quc tch: Vit Nam

S CMND: 022378650

1.5. Phng tin lin h:

in thoi: 01265847070



II . THNG TIN C BN V HOT NG SN XUT KINH DOANH.

2.1. A IM THC HIN D N

V tr xy dng d n: Hm 212 ng Nguyn Vn Nguyn, Phng Tn nh,

Qun 1, Tp. HCM thuc tha t s 3,5,6,7 t bn a chnh s 3 v mt phn tha s

3 t bn a chnh s 4, Phng Tn nh, Qun 1, Tp. H Ch Minh.

Nm v tr trong hm 212, tip gip vi trc ng chnh Nguyn Vn Nguyn,

cng trnh s c mt ng gp thm m cho cnh quan khu vc, cng nh mang li

mt nt kin trc cho b mt khu vc;

Tng din tch khu t: 355,1 m. Cc mt tip gip ca khu t xy dng nh sau:

+ Pha ng Bc: tip gip hm hin hu l gii 5-7,5 m, kt ni trc tip vi ng

Hong Sa (l gii 15 m);

+ Pha ng Nam: gip ng d phng;

+ Pha Ty Nam: tip gip hm hin hu

+ Pha Ty Bc: gip khu dn c hin hu

.



Hnh: V tr d n

Hin trng h tng khu vc nh sau

Hin trng t ai: L khu t trng trong ton khun vin 355,1 m2 ti hm 212

ng Nguyn Vn Nguyn, Phng Tn nh, Qun 1, Tp.HCM

Khu dn c, khu th, c s sn xut, kinh doanh, dch v



Trong khu vc l khu dn c sinh sng nn, ch c mt s ca hng tp ha, kinh

doanh nh l, khng c c s sn xut no.

Cc cng trnh vn ha, tn gio, di tch lch s

Trong khu vc d n khng c cng trnh vn ha, tn gio hay di tch lch s no.

Hin trng giao thng

Pha ng Bc l ng hm hin hu l gii 5-7,5 m i ra ng Nguyn Vn

Nguyn, cch Trung tm thnh ph khng xa, .

Hin trng cp nc

Hin nay trong khu vc d n hnh thnh mng li ng ng cp nc my ca

Thnh ph trn ng Nguyn Vn Nguyn.

Hin trng h thng thot nc

H thng thot nc ma ring vi h thng thot nc thi;Nc thi sau khi x l

s thot ra h thng thot nc thi ca thnh ph trn ng Nguyn Vn Nguyn.

Hin trng cp in

D n c h thng in trung th 15KV trn ng Nguyn Vn Nguyn, v h thng

ng dy h p km n ng chy bao quanh khu vc 15 KV

Trong khu vc thit k ch c 01 trm bin p:

15/02-0,4 KV 3 x 750 KVA

Thng tin lin lc

Mng li thng tin lin lc ph khp ton b khu vc

2.2. LOI HNH SN XUT, KINH DOANH, DCH V; SN PHM V S

LNG

p ng nhu cu thu vn phng lm vic ti qun 1, tp HCM.

p ng nhu cu nh ca CBNV lm vic ti qun 1 v mt s qun ln cn trong ni

thnh TP.HCM.



2.3. DIN TCH MT BNG

Tng din tch ton b d n c th hin trong bng sau:

Bng cn bng t ai theo din tch tr l gii

stt Thnh phn

Din tch (

m) T l (%)

1 Din tch sn tng hm 324,6 14,02

2 Din tch sn tng trt, lng 435,0 18,78

3 Din tch sn lu 1-6 1.305 56,35

4 Din tch sn sn thng 217,5 9,39

5 Mi che cu thang 33,9 1,46

TNG 2.316,0 100,0

Loi cng trnh: vn phng kt hp cn h cho thu

Tng din tch t quy hoch: 355,1 m2

Mt xy dng ton khu : ti a 70%

H s s dng t ton khu: 5,0 5,5 ln

Tng cao: 10 tng

Chiu cao ti a: 27 m

TIN THC HIN D N D KIN:

Bng Tin thc hin d n d kin

STT HNG MC THI GIAN

1 Xin giy xc nhn ng k k hoch bo v mi trng Thng 10 11/2015

2 Xin giy php xy dng Thng 11 12/2015

3 Kho st, lp d n, thit k, thm tra, mi thu v chn thu Thng 01 04/2016

4 Thi cng xy dng cng trnh Thng 04/2016



STT HNG MC THI GIAN

5 Nghim thu a vo s dng Thng 06/2017

2.4. NHU CU V NGUYN, NHIN LIU S DNG

2.4.1. Giai on thi cng xy dng

Giai on thi cng xy dng, nguyn liu ch yu c s dng trong qu trnh thi cng

bao gm: St thp, ct, , xi mng, gch. Khi lng c c tnh s b nh sau.

Bng Nhu cu s dng nguyn vt liu d kin

STT HNG MC N V KHI LNG

1 St thp Tn 252

2 Xi mng Tn 530

3 Ct m3

370

4 m3 850

5 Gch. Vin 340.000

2.4.2. Giai on i vo hot ng

C s kinh doanh vn phng, cn h cho thu do nguyn vt liu s dng trong giai

on i vo hot ng rt t, gn nh ch c ho cht cn s dng cho h thng x l nc

thi l Clorine. Lng Clorine cn thit s dng cho mc ch kh trng nc thi

trc khi thot ra mi trng l 5-10 kg/thng.

2.5. NHIN LIU S DNG

2.5.1. Giai on thi cng xy dng

Nhu cu s dng in:

Ngun in cp c ly t ng dy trung th 22(15) kV hin hu ca TP.H ch

Minh. Nhu cu s dng in ca C S khong 30 50 Kw/ngy.

Nhu cu s dng nc



Lng nc cn cung cp cho cng nhn trong qu trnh xy dng c ly t h thng

cp nc ca khu vc. S lng cng nhn trong khu vc c tnh khong 30

ngui/ngy.

Vy lng nc cn cung cp l: 30 x 60 =1.800 lt/ngi/ngy (vi tiu chun s dng

nc cho mi ngi l 60 lt/ngi/ngy).

2.5.2. Giai on i vo hot ng

Nhu cu s dng in

cung cp in h th cho cng trnh, b tr trm bin th c lp, pht trin t vic ci

to trm bin th hin c, nm pha sau ta nh.

Ngun cung cp in cao th cho cc trm bin p ny c ly t li in ca khu

vc n, v tr b tr cc trm bin p v im u ni do Cng ty in lc a phng

quyt nh.

H thng chiu sng trong nh c thit k theo tiu chun chiu sng nhn to trong

cng trnh dn dng chiu sng trong cc phng lm vic, gian bn hng, snh chnh, gara

ch yu dng n hunh quang 1200x600, 600x600 ; chiu sng cc khu vc ph tr nh:

hnh lang, cu thang, l-gia, kho, khu WC, v.v... dng n dowlight, m bo ri ti

thiu ti cc khu vc nh sau:

- Phng lm vic: 400 lux

- Phng k thut, phng bm: 200 lux

- Hnh lang, cu thang, khu WC, kho: 100 lux

Cc n chiu sng s c v cc n bo li ra s c b tr ti tt c cc li i li v li

ra vo chnh nh: snh chnh, hnh lang, cu thang v mt s khu vc cng cng khc.

H thng in chiu sng c bo v bng cc p-t-mt lp trong cc bng in, iu

khin chiu sng bng cc cng tc lp trn tng cnh ca ra vo hoc li i li, nhng

v tr thun li nht.

H thng chiu sng ngoi nh c thit k theo tiu chun chiu sng nhn to bn

ngoi cng trnh xy dng. Chiu sng ng i ni b bng n thy ngn cao p



220V/125W lp trn ct thp cao 6m; chiu sng khu vc vn hoa bng cc n cy

thng lp bng thy ngn cao p 220V/80W; ngoi h thng chiu sng ng i sn bi,

s b tr mt s n pha chiu sng trang tr mt ngoi ca cng trnh ty theo yu cu

c th ca Kin trc s.

Cng sut tnh ton cho khi nh thuc c tnh ton v tng hp theo bng di y:

Khi Ph ti n

v

S

lng

Sut

ph ti

H s

Kt

Cng

sut Tng TBA

Gara

Chiu sng m2 400,000

400

KVA Qut Thng gi Ci

Vn

phng

Chiu sng, cm m2

iu ho nhit m2

Thang my Ci

Qut tng p cu

thang Ci

Trong trng hp mt in li, bo m vic cung cp in lin tc cho mt s ph

ti quan trng nh: h thng in chiu sng lm vic cho cc khu vc dch v, vn phng

lm vic, h thng in chiu sng hnh lang, cu thang cng cng, h thng thng tin

lin lc, h thng phng chy cha chy, h thng thang my, bm nc, v.v... cnh mi

trm bin p b tr 1 my pht in Diesel d phng km theo thit b chuyn mch i

ngun in t ng (ATS).

Nhu cu cp nc

Nc s dng cho cng trnh gm nc phc v cho cc nhu cu sinh hot ca nhn

vin vn phng, dn c cn h, thng mi v lng nc dng cho cu ha (PCCC).

H thng cp nc ngoi nh ca cng trnh c u ni t h thng cp nc ca

Thnh ph n b cha nc ngm ca tng nh

Nhu cu dng nc c c tnh nh sau:



Lm trn: 9 m3/ngy. m

Ti khu k thut b tr mt trm bm cp nc ln mi. B tr my bm cp nc

cha chy ring bit. ng ng i theo khu gara, dc hp k thut cp ln mi.

B cha nc ngm c thit b nh van kho, van phao, thang xung, thit b bo

mc nc, h thu cn, thot trn, ca thm...

B tr cc b cha nc trn mi theo tng block. Cc b nc c dung tch m bo,

k c lng nc d tr 10 pht u cho cha chy.

Nc t b cha nc trn mi theo cc ng ng chnh, ng nhnh v cc van kho

cung cp cho tt c cc thit b dng nc trong cng trnh.

Trn trc cp nc, b tr cc van gim p cho cc tng pha di m bo bn cho

thit b.

- ng ng cp nc dng ng thp trng km, hoc ng nha.

- ng ng trong nh i ngm sn, ngm tng v i trong hp k thut.

- Nc cp cho mi tng s dng u c lp ng h o lu lng tin cho s

dng, vn hnh v thanh ton tin s dng nc sau ny.

Hng mc

Din tich

sn s dng

(m2)

H s

(m2/ngi)

S ngi Tiu chun

cp nc

Quy chun p

dng

Th tch

(lt)

Tng hm

Ra sn 324,6 - - 0,5 lt /m

2

sn. ng

QCXDVN

01:2008/BXD

165

Tng trt, lng

Thng mi 435,0 10 44 45

lt/ngi/ng

QCXDVN

01:2008/BXD

1.980

Lu 1 6, sn thng

Cn h 1.522,5 10 153 45

lt/ngi/ng

QCXDVN

01:2008/BXD

6.885

Tng cng 9.030



III. K HOCH BO V MI TRNG TRONG GIAI ON THI CNG XY

DNG

Yu t

gy tc ng

Tnh trng Bin php gim thiu

Tnh trng

C Khng C Khng

Kh thi t cc

phng tin

vn chuyn,

my mc thi

cng

x

S dng phng tin, my mc thi

cng qua kim nh x

S dng loi nhin liu t gy nhim

+ S dng du DO thay cho du FO x

nh k bo dng phng tin, thit

b

+ Lp k hoch bo tr, bo dng,

thay du m cho thit b

x

Che chn cng trnh thi cng d n x

Che chn cc phng tin vn chuyn

vt t, cc bi tp kt vt t xy dng x

B tr cng nhn dn dp v sinh cui

ngy lm vic ti cc cng ra vo d

n

x

B tr n tn hiu, dy treo hng

dn ngi dn tham gia lu thng x

Trnh tp trung vn chuyn vt t

cng mt thi im, b tr cc PTVC

hp l

x

Bi x Cch ly, phun nc gim bi x

Bin php khc: x



- Che chn khu vc thi cng

bng bc hoc bng tn.

- Ra sch xe ra vo cng trng.

- B tr mt bng xy dng xy

cu ra xe c gii.

- Khng s dng cc phng tin

vn ti qu c.

- Khng vn chuyn qu ti trng

trnh gy ri vi. Trong qu

trnh vn chuyn phi c bin

php che chn bng bt trnh

gy ri vi.

- Cc tuyn ng vn chuyn ra

vo khu vc d n c ti

nc gim bi.

- B tr thi gian vn chuyn cho

ph hp, trnh vn chuyn vo

gi cao im, trnh hot ng

cng lc nhiu loi xe vn

chuyn.

- Trang b bo h lao ng cho

cng nhn.

Nc thi sinh

hot x

Nc thi sinh hat ca cng nhn

vin trong qu trnh xy dng s c

thu gom, x l qua b t hoi hin

hu ti d n trc khi thi vo h

thng thot nc ti khu vc.

x



thng ra h thng thot nc thi

khu vc x

Sau khi cng trnh xy dng xong s

thu n v c chc nng thu gom x

l.

+ Ch u t s lp t nh v sinh

lu ng bng composite, c h thng

container WC di ng. Sau thu

n v c chc nng x l.

x

Nc thi xy

dng x

Thu gom, x l trc khi thi ra mi

trng

- Ti khu vc d n s o cc khe

rnh chy dc xung quanh d n

thu gom nc ma chy trn.

- Nc thi s c thu gom v h

lng trc khi thi ra cng chung. H

lng c xy bng gch, kch thc

2x2, h ny dng lng s b cc

ht c ng knh ln. Sau khi lng,

nc c thi ra cng chung, phn

bn c no vt nh k 1 ln/tun.

Nc sau lng thi vo h thng

thot nc chung ca khu vc.

x

Cht thi rn

xy dng x

Thu gom ti ch hoc ti s dng:

Nhng nguyn vt liu d tha c th

ti s dng c th phi c phn

loi v ng ni quy nh thun

tin cho vic ti s dng hoc bn ph

x



liu. + Gch v, t ct trong qu

trnh xy dng s c tp kt li

phc v cho vic p nn.

T thi ti cc a im quy nh

ca a phng x

Thu n v c chc nng x l

+ V bao xi mng, ng nha, st vn

s c thu gom v bn li cho c s

thu mua ph liu.

x

Bin php khc x

Cht thi rn

sinh hot x

T thi ti cc a im quy nh

ca a phng x

Thu n v c chc nng thu gom

x l trong ngy.

+ Cht thi rn sinh hot pht sinh ch

yu l hp ng cm, thc phm tha,

bc nilon, giy, lon, chai... s c

thu gom, cha trong cc thng nha

c np y, c b tr trong khu vc

tng hm,phn loi v ng k vi

n v c chc nng n thu gom x

l hng ngy

+ c tnh trung bnh mi ngy 1

ngi s thi ra khong t 0,3 0,5kg

rc sinh hot.

Vy lng rc sinh hot hng ngy l:

30ngi x 0,3kg/ngi/ngy = 3

(kg/ngy)

x



Cht thi nguy

hi x

Thu n v c chc nng x l x

Bin php khc: Cht thi c thu

gom, bo qun c che y v c dn

hnh cnh bo lu tr cht thi nguy

hi.

x

Ting n x

nh k bo dng thit b x

B tr thi gian thi cng ph hp: cam

kt khng hot ng thi cng vo gi

ngh ngi ca ngi dn t 11h30-

13h30; 21h 6h sng hm sau.

x

Khng trn b tng ti cng trng

m ly b tng ti t trm trn b

tng khng gy ra ting n v rung

t my trn.

x

Khng vn chuyn vt t vo gi cao

im. Hn ch tp kt vt liu vo

cng thi im.

x

S dng cc thit b my mc tin

tin, t gy n x

Rung x nh k bo dng thit b x

B tr thi gian thi cng ph hp x

Nc ma chy

trn x

C h thng rnh thu nc, h ga thu

gom, lng lc nc mua chy trn

trc khi thot ra mi trng

x



IV. K HOCH BO V MI TRNG TRONG GIAI ON HOT NG

Yu t

gy tc

ng

Tnh trng

Bin php gim thiu

Tnh trng

C Khng C Khng

Bi v

kh thi x

Trang tr, lp t ca knh xung quanh cc ca,

phng ra vo x

B tr cy xanh trong khun vin x

B tr bi u xe hp l x

i vi kh thi ca my pht in:

- Lp t trong phng cch m ti tng hm

- ng khi cao hn mi nh 1,5 m

- Bo dng my mc nh k

x

Bin php khc:

S dng phng tin my mc thi cng qua

kim nh..

Gim st cht lng mi trng khng kh

+ V tr ly mu: Cng d n, khu vc bn trong

d n, ng khi my pht in.

+ Cc ch tiu gim st: nhit , ting n, bi,

SO2, NOx, CO.

+ Tn sut gim st: 6 thng/ 1 ln.

+Tiu chun so snh: QCVN 05:2013/BTNMT;

QCVN 26:2010/BTNMT; QCVN

19:2009/BTNMT.

Nc x Thu gom v ti s dng x



thi sinh

hot

X l s b bng b t hoi trc khi thi vo

h thng x l nc thi ca ta nh trc khi

thi ra h thng thot nc thi ca thnh ph

trn ng Nguyn Vn Nguyn; Cam kt nc

thi sau x l t QCVN 14:2008/BTNMT; ct

B.

x

Nc ti cc lavabol, nc lau sn c thu

gom vo h thng x l nc thi ca ta nh x

Bin php khc: Xy dng h thng x l nc

thi c cng sut 10m3 t quy chun QCVN

14:2008/BTNMT ct B, K=1.2 trc khi thi ra

mi trng.. Quy trnh x l nh sau:

x

B sinh hc hiu kh tip xc

B lng 2

B iu ha

Kh trng

Ngun tip nhn

Clo

Sc kh

B t hoi 3 ngn

Sc kh

Bn d

Nc thi t d n



Gim st cht lng mi trng nc

+ V tr ly mu: nc thi sau x l

+ Cc ch tiu gim st: pH, TSS, BOD, Amoni,

Nitrat, Phosphat, Coliform.

+ Tn sut gim st: 6 thng/ 1 ln.

+ Tiu chun so snh: QCVN 14:2008/BTNMT

ct B, K=1.2

Nc

thi

khc

x

Thu gom v ti s dng x

X l nc thi cc b v thi vo h thng x

l nc thi tp trung x

X l nc thi p ng quy chun quy nh v

thi ra mi trng x

Bin php khc x

Nc

thi t

h thng

lm mt

x

Gii nhit v thi ra mi trng x

Bin php khc x

Cht

thi rn x

Thu gom ti ch hoc ti s dng x

T x l x

Thu n v c chc nng x l: Thu n

v c chc nng x l: Gm thc phm tha,

v hoa qu, rc hu c s c thu gom,

cha trong cc thng nha c np y, c b

tr trong khu vc tng hm, vn phng v nh

v sinh,phn loi v ng k vi n v c

chc nng n thu gom x l hng ngy.

x



+ c tnh trung bnh mi ngy 1 ngi s thi

ra khong t 0,3 0,5kg rc sinh hot.

+ Vy lng rc sinh hot hng ngy l: 64

ngi x 0,3kg/ngi/ngy = 19,2 (kg/ngy)

Bin php khc: Bin php khc: Bn cho n

v thu mua i vi cht thi nh: giy, v lon

nc ngt

x

Cht

thi

nguy hi

x

Thu n v c chc nng x l: Lng cht

thi rn nguy hi pht sinh ca d n ch yu l

bng n hunh quang.

+ Cht thi c thu gom, bo qun c che y

v c dn hnh cnh bo lu tr cht thi nguy

hi.

+ Lng cht thi pht sinh rt t, do chng

ti kin ngh khng ng k ch ngun thi

nguy hi.

x

Mi x

Lp t qut thng gi x

Bin php khc: lp t h thng x l mi cho

h thng x l nc thi. x

Trang tr, lp t ca knh xung quanh cc ca,

phng ra vo x

B tr cy xanh trong khun vin x

i vi kh thi ca my pht in:

- Bo dng my mc nh k x

Nhit x Lp t qut thng gi: x



d + Qut thng gi c lp t ti tng hm ca

d n.

Bin php khc:

Bin php khc: Trang b my lnh cho d n.

+ My lnh c lp t trong cc phng ngh

ca d n.

x

Tng cng cng tc qut dn v sinh cng nh

phun nc thng xuyn trn b mt sn bi

gim bi v nhit

x

Ting n x

nh k bo dng thit b. x

Cch m gim ting n. x

Bin php khc: i vi ting n pht sinh t

my pht in: cn phi t my pht in di

tng hm v t trong phng cch m tt.

x

Nc

ma

chy

trn

x

C h thng rnh thu nc, h ga thu gom, lng

lc nc ma chy trn trc khi thot ra mi

trng

x

Bin php khc x



V. CAM KT

5.1. Chng ti cam kt thc hin nghim chnh cc quy nh v bo v mi trng ca

Lut Bo v mi trng nm 2014, tun th cc quy nh, tiu chun, quy chun k thut

v mi trng v chu hon ton trch nhim nu vi phm cc quy nh v bo v mi

trng:

- Kh thi, ting n khng kh xung quanh x l t tiu chun theo tiu chun hin hnh.:

QCVN 05:2013/BTNMT, QCVN 06:2013/BTNMT , QCVN 26:2010/BTNMT

- Kh thi ti my pht in: X l t tiu chun QCVN 19:2009/BTNMT;

- Nc thi: Cam kt s x l nc thi sinh hot t quy chun mi trng QCVN

14:2008/BTNMT mc B, h s K=1,2 mc B, trc khi thi ra h thng thot nc chung

ca thnh ph.

- Cht thi rn: Ch u t s k hp ng thu gom vi Cng ty TNHH Mt thnh vin

Dch v cng ch Qun 1 thu gom theo quy nh.

- Cht thi nguy hi: Ch u t s qun l cht thi nguy hi ng theo thng t

36/2015/TT-BTNMT v t chc phn loi, cch ly, lu gi tm thi v c hp ng thu

gom vi n v c chc nng.

5.2. Chng ti cam kt thc hin y cc k hoch bo v mi trng c nu trn

y v thc hin bo co gim st mi trng 6 thng/ln gi v S Ti nguyn mi

trng (Chi cc Bo v mi trng), y ban nhn dn qun 1 (Phng Ti Nguyn Mi

Trng qun 1) c kim tra, gim st theo ng quy nh.

5.3. Chng ti m bo trung thc ca cc thng tin v ni dung trong k hoch bo v

mi trng ny./.

Ch u t

CNG TY TNHH SX TM DV

XUT NHP KHU THANH PHAT



PH LC

1. Thuyt minh cng ngh x l nc thi

2. Giy chng nhn quyn s dng t

3. Bn v xy dng



THUYT MINH CNG NGH H THNG X L NC THI

Nc thi t h thng thu gom ca d n c dn vo b t hoi ca HTXLNT. B

t hoi c nhim v thu gom ton b nc thi pht sinh trong d n ng thi lm 2

chc nng chnh: lng v phn hy cn lng vi hiu qu x l t 40 5.5%. Vi

thi gian lu nc 3 6 ngy, khong 90% - 92% cc cht l lng lng xung y b.

Cn lng c lu gi li trong b 3 6 thng, di tc dng ca vi sinh vt k kh,

cc cht hu c b phn hy, mt phn to thnh cc cht kh, mt phn khc to

thnh cc cht v c ha tan.

Nc thi t b t hoi t chy vo b iu ha ca HTXLNT. B iu ha nc thi,

c nhim v iu ha nng v lu lng nc thi, trnh hin tng qu ti v gi

cao im v gip cho cc cng trnh n v sau hot ng hiu qu hn. Ti b iu

ha c b tr h thng sc kh trnh qu trnh k kh sinh mi hi v bm nhng

chm bm nc thi qua b sinh hc hiu kh.

Ti b sinh hc hiu kh, hm lng BOD cn li trong nc thi s c x l tip

vi s tham gia ca vi sinh vt hiu kh bm dnh trn b mt vt liu tip xc. Hiu

qu kh BOD c th t 85 - 90%. Khng kh c cung cp cho b sinh hc nh 2

my sc kh hot ng lun phin.

Trong b sinh hc hiu kh c h thng vt liu m cho vi sinh vt bm dnh. Mt

vi sinh vt c duy tr vi mt rt cao: 8000-1320 mg/l gip cho hiu qu x l

trn 1 n v th tch b tng cao gp 3-5 ln so vi cng ngh Aerotank thng

thng. T gip gim chi ph u t xy dng b, xy dng b lng nh.

Trong b sinh hc hiu kh tip xc xy ra qu trnh kh BOD v chuyn ha Nit

amonia thnh Nitrate trong iu kin c oxi ha tan.

NH3 -> NO2 -> NO3 (trong iu kin c oxi ha tan)

Nc sau khi qua b sinh hc hiu kh tip xc s t chy qua b lng nhm tch bn

sinh hc c trong dng nc thi. Nc thi s c phn phi vo ng lng trung

tm, bn s lng xung y b, nc trong s chy trn b mt v theo h thng mng

thu nc chy vo b kh trng (b tip xc). Phn bn lng xung y b mt phn



c tun hon li b sinh hc duy tr nng bn, phn bn d s c bm vo

b t hoi.

Trong b kh trng, Clorine s c bm vo nc thi bng bm nh lng. Di

tc dng ca cht oxy ha mnh, cc vi sinh vt trong nc thi s b tiu dit, m

bo nc thi t tiu chun v mt vi sinh trc khi thi ra ngun tip nhn. Nc s

t tiu chun x thi. QCVN 14 2008 Ct B, K=1,2

Hiu qu h thng x l:

Nc thi sau x l t QCVN 14:2008, ct B, K=1.2 v c x ra ngun tip nhn.

Theo tnh ton thit k cc cng trnh x l nc thi sinh hot, Trnh Xun Lai, hm

lng cc cht nhim gim qua cc cng trnh x l nh sau:

- B t hoi: BOD, COD gim 40%

- B iu ha: BOD, COD gim 5%

- B hiu kh tip xc: BOD, COD gim 80%; SS gim 60%; Nt gim 80%

- B lng sinh hc: SS gim 90%.

B kh trng: BOD, COD gim 10%; Coliform gim 90%

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