• KHOA HOC CONG NGHE •
NGHIEN CLTU t>NG DUNG CONG NGHE NANO TRONG VIEC TAI SLf DUNG NU'aC THAI M 6 DA XLT LY De CUNG C A P NU'aC SACH CHO DAN CU'XUNG QUANH
CAC M 6 T H A N , T A I Q U A N G N I N H
THS. D^NG XUAN THlTdNG, THS. ht VAN TH^CH, KS. DlTOfNG VAN DANG
Vifn Ky thu^t vd Cong ngh^ moi trucmg Liin hi$p cdc Hpi khoa hpc vd kp thudt Vift Nam
Tdm tat: Nuac Id ngudn tdi nguyen vd citng quy gid. Nhu cdu cdp nu&c sgch cho sinh hogt cho cdng nhdn md la rdt l&n. Trong khi do mot lugng l&n nu&e thdi hdm Id ed the xii ly tiep tuc di sie dung, lgi xd ra mdi truang ben ngodi, gdy thdt thodt ldng phi tdi nguyen. Kit qud nghien cieu ieng dung edng nghf Nano trin md hinh phdng thi nghifm vd md hinh hifn tru&ng cua di tdi nghiin cieu
"Nghien cdu ieng d\ing cdng nghi Nano trong viec tdi su dung nu&e thdi mo dd xu /j? di eung edp nu&c sgch cho ddn cu xung quanh cde mo than tgi Qudng Ninh " Id rdt edn thiet vd cdp bach. Qud trinh xic ly ndng cao nu&c thdi hdm Id md than bao gdm hai bu&c: Xie ly bgc 1 theo sa dd keo tu - ldng - lgc vd xu ly bge 2 bdng Ige mdng NF.
Abstract: Water is a very precious resource. The demand for clean water supplied for mine workers is very high. In the meanwhile, large amounts of mine waste water can be treated for further use but it is re-released into the environment, causing waste of resources. Results of study on application of Nano-technology in the laboratory model and actual field ofthe study project " Study on the application of Nano-technology in the reuse of treated mine sewage water to provide clean water for residents around the coal mines in Quang Ninh"are very necessary and urgent. Advanced process of coal mine wastewater treatment consists of two steps: First treatment according to the flocculation - settling -filtration and second stage treatment by NF membrane filtration.
1. GlOfI THiEU CHUNG thi vdn d l vd khai thde va cap nude sinh hogt Cdng nghifp khai thac than va khoang san la tten dp cao khai thdc trung binh la +150 ddn + mpt trong nhung ngdnh cdng nghifp ddng vai 800 so vdi mdt nude bien la mpt van de cap ttd quan ttpng trong su nghifp cdng nghifp hda bach cua todn ngdnh than,
vd hifn dai hda dat nude. Nganh khai thac Trong qua trinh khai thac, nude thdi md than khodng sdn Id mft ttong nhung ngdnh sd dyng dupe hinh thanh tir ba ngudn chinh: nude bom nhidu cdng nhan, trung binh khodng 700 - 1 , 0 0 0 tir cac cua Id cua md hdm Id, tir cdc moong cua cdng nhdn lao dpng trye tiep tai mot md khai md Id thidn, nude thdi td cdc nlid mdy sdng thac hdm Id vd tit 300 - 500 cdng nhdn lao dfng tuyin cac bai thdi, kho than, dupe thdi ra cdc true tidp tgi mpt md khai thac Id thidn. Vdi nhu sdng suoi. Trong 3 loai nude thai neu tten, nude cdu cdp nude cho sinh hogt, tdm gidt la 250 thai hdm Id cd sd lupng ldn vd n6ng dp cac chat lit/ngudi/ngay lao ddng (Theo ngudn tir TKV) d nhiem ttong dd cao ban nhieu so vdi cdc loai va nhu cdu nude sgch cho san xuat va dap bui nude thai khac.
78 TAPCHfTAl NGUYEN N U ( 5 C 5(54-2017
• KHOA H Q C CONG NGHE •
Cac ket qud quan trdc nude thai hdm Id md than ciia khu vuc Qudng Ninh cho thay: pH ttong nude thai hdm Id md than thdp, v l mua khd phdn Idn ndm d mue pH = 3,5 -^ 5,5 vd mua mua pH = 4 ^ 6,5; ham lupng Fe cao dao dpng td 2 ^ 15 mgA (vd mua khd) va 0,5 ^ 5,5 mg/I (ve miia mua); hdm lupng Mn dao dpng td 1,5 -^10 mg/1 (ve miia khd) vd 0,5 -^ 7,5 mg/1 (vl mua mua);
ham lupng can la ldng dao dpng tir 50 -^ 300 (ve mua khd) va 150 -^ 500 mg/1 (vd miia mua). Ham lupng Fe vugt QCVN 40:2011/BTNMT doi vdi nude ngudn loai B toi da 3 Ian ve mua khd vd 1,1 lan vd mua mua; cdc gid tri tucmg iing ddi vdi Mn la 10 ldn (vdo mua kho) vd 7,5 Idn (vao miia mua); ham lupng SS vupt tdi da 3 ldn vao mua khd vd tir 1,5 ^ 5 lan vdo miia mua [1,2],
Hidn nay, ngudn nude phuc vu cho qud trinh sdn xudt cda ngdnh than chu yiu mua tir hf tbdng cdp nude sach cua khu vyc. Trong khi dd, thyc te cho thdy ngoai ngudn nude edp cho nhu cdu an, udng, tdm gi§t cua cdng nhan md thi cdc ngudn cung cap cho nhu cau sdn xudt, dgp byi, euu hda,... ciing yeu cau luu lupng ldn vd chat lupng cao. Vi thd can phai dua ra mpt gidi phap tdng thd vd xu ly nude thai md tdi tuan hoan cap cho sinh hogt vd sdn xudt Id mpt lya chpn ddng dan, cdp thidt, phu hpp vdi tieu chi sii dung hpp ly, tilt kifm tdi nguyen nude vd bao vd mdi trudng. Khi ngudn nude duoc sd dung hifu qud vd ben vung se gdp phdn cai thifn vd ndng cao chdt lupng mdi trudng lam vifc ciia cdng nhdn md, gidm chi phi sdn xudt do khdng phdi mua nude sinh boat, lam tdng thu nhap cua cdng nhdn tgo tiln dd cho su phdt trien bin v&ng cua nganh than.
Cdng nghf XLNT hdm 16 ciia md than tai Tdng cdng ty Than Ddng Bde dupe dp dung hifn nay chu ydu Id phuang phap keo ty vd Ipc trpng lyc. Nude thai 16 dupe bom ldn dua trye tidp vdo b l trung hda. Tgi day dung dieh siia vdi Ca(0H)2 dttpc bom vao vd hod ttpn vdi nude
thdi dd trung hod axit H2SO4 cd ttong nude thai, ndng dp pH dat tieu chudn mdi trudng, ddng thdi khdng khi td may nen khi duac syc vao b l tnmg hda tgo dilu kifn oxy hod phdn Idn Fe, mpt phdn Mn va trp giup qud trinh hda ttdn siia vdi. Tu bd trung hod nude thai chdy trye tidp sang b l keo ty, tgi day dung dich keo tu PAC, PAM dupe bom vdo va hod ttdn vdi nude thai bang bom khudy ttpn sau dd tu chdy vdo be ldng thd cdp. Trude hdt eho PAC vdo dd gidm dp nhdt, tang kha ndng hut gifia cdc hgt co kich thudc nhd tao thdnh cdc hgt cd kich thude ldn ban, sau do cho tidp PAM dl tang kha ndng hdi tu eda edc hgt khi tidp xiic vdi nhau tao thanh thd keo tu ldn, tdng tdc dp ldng dpng. Tai be ldng, cdn lo lung kit thdnh bdng cd kich thudc ldn, phdn ldn ldng dpng xuIng day bl. Tgi day be Idng lap ddt cae dng hiit bim ndi vdi may bom bim. Bam bim dinh ky hogt dpng hut bim ldn bl chua bim, sau do bun tai b l ehua bun duoc bom ldn mdy dp bim dl ep. Nude tir be Idng thii edp dupe chdy trye tiip sang bd thu nude sau ldng, tgi day nude dupe bam dp lyc bam ldn bd lpe mangan, sau do theo dudng dng dan v l bd chiia nude sgch. Tai be ehiia nude sach nude qua dudng dng chdy ra sudi, mpt phdn tdi su dung cho myc dich vf sinh cdng nghiep vd tudi dudng chdng bui. Cde tram XLNT phdn Idn dupe didu khiln bdng hinh thiic bdn ty dpng. [1,2]
Vi vgy nude thdi sau xii ly chi dap dng dupe yeu cdu xd ra ngudn nude mdt loai B theo QCVN 40:2011. Tuy dgt tieu chudn nhung nhilu thdi dilm hdm lupng TSS ttong nude thdi vupt trdn 50 mg/1, ham lupng Fe vd Mn phdn Idn nam d ngudng ndng dp gidi hgn cho phep.
Nude thai hdm Id chu yeu xd ra sdng sudi hodc ttong mft sd trudng hpp sd dyng mot phdn dd d^pbyi. [1,2]
Day chuyen cong nghf dupe md td ttong Hinh I sau day:
TAP CHf l A l NGUYEN Nl/(5C S6 4-2017 79
• K H O A H Q C CONG N G H f <•
Sucm \\Ca(OHh PAC/
PAM
Be nuac S9ch
Nudrc thii in6
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Bg trung h6a
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B I phan ling
Nw dcsa u lang bim
e l ling
- - * •
Ba IQC kgt hgp ktiit Mn
Bom biln - - •
V BelSng
biUi •
Hinh I. Sa dd cdng nghi XLNT md than hdm Id [1,4f
Sudi
Bai chiia biin thai
Theo cdc kdt qua quan trac nude thai HLMT sau xu ly chi dap iing dupe ydu cdu xd ra ngudn nude mdt loai B theo QCVN 40:2011/BTNMT.
Tuy dgt tieu chudn nhung nhieu thdi didm hdm lupng SS trong nude thdi vupt trdn 50 mg/1, hdm lupng Fe va Mn phan ldn nam d ngudng ndng dp gidi ban cho phep dd xa ra sdng sudi [1]. Nhu vay, nude thai sau xii ly tgi cdc HLMT hifn nay d khu vyc Qudng Ninh van khdng thd sd dyng dupe cho cdc nhu cdu sinh hogt ciia cdng nhdn cung nhu dgp byi phun suong trong cdc ham Id.
Theo kinh nghifm cda cdc nude, cdc qud trinh mdng lpe XLNTHLMT vdi chdt lupng nude dau ra cao, sd dyng dupe cho dn uong vd sinh hogt. Hifu qua xir ly eda phuong phdp lpe mang NF dat tdi 99% theo cac thdng s6 Ca^"^, Mg^* va S04^'[6].Tuy nhidn de ban chi tdc nghdn mang, nude thai phai dupe xd l;y dgt QCVN 40:2011/BTNMT eft A.
Nhu vay, de tdi sd dyng nude thai HLMT cho myc dich sinh hoat, cdn thilt phdi hoan thifn cdng nghf xur ly bde 1 theo qua trinh keo ty - ldng - lpe va sau do tidp tyc xu 1;^ ndng cao d cdc qud trinh Ipc mdng NF.
Z NGHlfeN CtJtJ H O A N T H I | N QUA TRINH X U ' L t NlTdC THAI HAM L Q MO THAN
Dd hoan thifn qud trinh keo ty - ldng - Ipc
nhdm dam bdo nude thai HLMT sau xic ly dat mdc A theo QCVN 40:2011/BTNMT, ttong dd ham lupng SS nhd hon 20 mg/L, mft md hinh thi nghifm hifn trudng dupe lap ddt tai tram XLNT HLMT cua Cdng ty TNHH MTV 790
Kdt qud nghidn cuu XLNT ham 16 ciia Cdng ty TNHH MTV 790 tten md hinh hifn ttudng cho thdy: Chdt lupng nude thai dau vdo thay dii rS rft giiia miia mua vdi miia khd. Cae bifn phdp keo ty - ldng dam bdo cho nhidu chi tieu ttong nude thdi sau xd 1^ ddm bdo cdc yeu cdu xd ra ngudn nude mat loai B. Tuy nhien chi tidu hdm luong TSS ttong nude thai sau iSng van con CM, vd mda mua vupt miic cho phep ddi vdi nude thdi cdng nghifp xd vdo ngu6n nude m^t loai B. Mangan chua cd didu kifn oxy hda hit ndn phdn Idn ton tgi dudi dgng hda tan, lam cho ham lupng cua nd ttong nude thai ddu ra edn qua cao, gdp 1,5 din 2 !an so vdi mdc cho phep ttong QCVN 40:2011/BTNMT.
Ket qua thi nghidm ttong trudng hpp ttong eft Ipc cd ldp cat thgch anh phia dudi vd Idp vat lifu Zeonit - Diatomit phia ttdn eho thdy:
Cdc qud trinh oxy hda mangan dupe tdng cudng vd mft phdn sdt ciing dupe giii lai trong qud trinh ndy. Hdm lupng sdt va hdm lupng mangan sau qud trinh Ipc deu gam xudng c6n 80 TAPCHfTAl NGUYEN NU(5C 5(54-2017
• KHOA H Q C C O N G N G H E •
lai 0,5 mg/L (mile A cua QCVN 40:2011/BTNMT). Nuoc thai sau qua trinh keo
tu - lang va loc luon co ham lu(;mg TSS thap hom 20 mg/L.
Nude thii m6 Be ttung hoa — •
Be phan ling
Be ldng Be Ipc ket hpp khii M n
Thiet hi Ipc ap lyc diiug vat lifu Ipc Zeonit - Diatomit
Be nu6c sach dat QCVN 40/2011/BTNMT c§t A
Hinh 2. Quy trinh thie nghiim qud trinh hodn thifn xic ly NTHL md than
Nhu v$y vdi qua trinh keo ty - ldng - lpe cat phu ldp vgt lifu Zeonit - Diatomit, nude thdi c6 ham lupng chat ran la limg (dp dye) thdp, td 15 din 20 mg/L. Loai nude thdi ndy cd thd sd dyng dd lam vf sinh, dap bui khu vyc sdn xuat ho§c xd 1^ tidp tuc bang cac bifn phdp ndng cao cho cac muc dich cdp nude sinh hoat hode cac myc dich khac ttong qua trinh san xudt.
3. NGHIEN ClTU XU" LY NANG CAO NU*dC THAI HAM L O M O THAN BANG MANG LQG NANO CAP C H O SINH HOAT, AN UONG
3.1. Mang lpe Nano
Dd ddnh gid khd nang xit ly (tdch) Fe vd Mn bdng mdng NF dgng dng ddng thdi danh gid sy tich ty cac chdt d nhidm len mang va khd ndng logi bd cac chat nay bdng cac hda chat nia mdng tiln hanh nghien ciiu XLNT HLMT bdng mdng NF ttdn md hinh quy md phdng thi nghifm.
Mang lpe Nano la mot vat lieu dgng tam mdng cd b l day tu vai micromet din milimet, cd kich thudc Io khodng 0.001 micromet, cd khd ndng phdn tach vdt chdt theo dgc tinh vdt Iy vd h6a hpc cua chung khi chiu mdt dp lyc nhat dinh. Mang Ipc ngdn cdch giiia hai pha, c6 khd ndng tgo ra sdc can dd tach mot sd phdn tu cd ttong nude nhu can la lung, ion, vi sinh vat...khi dung dieh di qua mdng. Phdn tu lupng
bi chdn tir 200 - 500, logi mdng nay thich hpp cho qua trinh Idm mdm nude, loai bd mpt sd chdt hiiu CO tan, cac ion natti, chi, sdt, niken, thu^ ngan (II) va eho eae ion (I) di qua. Ap suat ddng lyc cua mdng NF thudng Id <40 atm, thdp ban so vdi mdng RO. Ddy Id mdt loai mdng bdt ddi xdng, td hop composite. Df ddy mang gdm ldp dd 150 //m, ldp da mdng 1 pm.
Ddc tinh mang la kich thudc lo xdp <2nm, dp sudt dpng lyc thu 15 - 25 bar, tdc dp Ipc >0,05 m^.m'^.ngdy"' .bar"'.
Thdng sd ky thudt lam viec eua mang Nano:
- Ddi dp sudt kPa: 550 - 1380 - Cdng suat L/ngdy.cm : 1 - 6 - A p lyc: 8 - 4 0 bar - Miic TDS giam (%): 70%
- Ty If logi bd muoi (%): >70%
- Tdc dp Ipc (1/h.m^): 10 -100 - Miic giam pH sau xir Iy: Nhd hon Nguyen ly boat ddng cua cdng nghf: Nude thdi sau khi da dupe xd ly b^c 1 dd dat tidu chudn xd thai ra ngodi mdi trudng sd dupe cho qua hf thdng mdng lpe Nano vdi dp luc vira du, tai qua qua trinh lpe se duoc dien ra, cac chdt thai bdn cd kich thudc Idn ban lo mang Nano se dupe giii lgi cdn nude sach se duoc di qua, nude qua mang Ipc Nano se dgt tidu chuan nude cap cho sinh hoat.
TAP CHfTAl NGUYEN Nl/GC 5(5 4-2017 81
• K H O A HOC C O N G N G H E •
a. Md dun dgng dng b. Cdu tgo mdng lgc Nano
Hinh 3. Cdu tgo mgng lgc Nano
3.2. Cong nghf xu ly nang cao nude thai mo bang mang loc Nano va thiet ke xay dung md hinh
Nghidn cuu xu ly nude thai HLMT bang mang Nano trdn md iiinh hien trudng Q ^ 5 m^/h dd danh gia hifu qud xu ly edc chdt d nhidm cdn lai ttong nude thdi HLMT sau qud trinh xu ly hda ly dat miie A cua QCVN 40:2011/BTNMT. Ddi ttrpng nghien cuu la nude thdi hdm Id thupc Tdng cdng ty Ddng Bac (Bf Qudc phdng).
Mang sii dung la loai mang Nano duoc lam tir vat lieu Polyme composite gdm nhidu ldp mong cd kich thudc lo rong khae nhau theo thii ty gidm ddn dp rong xep chdng len nhau, giiia cdc Idp Id cdc sai do; muc dich nhdm ngdn can cac phan tu c6 kich thudc khdc nhau vd chung dupe phan bd ddng ddu ttdn tdt cd cdc ldp, c6 kich thudc lo rong khoang 0,001^un, hogt ddng dudi dp sudt thdng thudng tu 100 - 600 psi.
- Bdn chda nude la loai bon nhya 5001 cua hdng Tdn A Dgi Thanh, ddm bdo bin chdc, khdng bi pha buy bdi an mdn hda hpc.
- Bom su dyng la logi bom cluu dupe fin mdn, do phdi bom nude bien. Bom cd Q = 1500 I / h , H = 1 0 b a r . ( M a b a m )
- Ong su dyng Id dng HOPE D21.
- Luu lupng kd logi..20I/phiit - Ddng ho do dp loai...l50 psi - Cpt Ipc NF:
+ Mang NF cd dang lpe trupt, dng thu nude ddt d trung tam.
+ Mang dupe lam bdng chat lifu PVDF, chiu dupe an mdn do nude bien.
+ Vd mdng ldm bdng nhya tdng hpp, dam bao ben chdc, chiu duac dn mdn.
+ Mdng sd dyng la mdng ESPAl- 4040, Hydranautics.
+ Kich thudc: D= 99 mm, L = 1016 mm.
Be nude sach
_
L ^ s a b fBUm khi nen ria mang
Xa nuac thai nea mang
^
Bf eftIQC Nano
Be nirdc sau Ipc
BOmrvangu^
Hinh 4, Sa dd cdng ngh? xit ly ndng cao nude thdi mo bang mdng lgc Nano
Kit qua nghien ciiu tren mo hinh mang NF a MTV 790 cho thay, Idii xu ly b j c cao bang mang hi?n tmong ttam XLNT hfcn 16 Cong ty TNHH loc NF cac thong so chit lu(?ng nuoc dSu dam bSo 82 TAPCH(TAlNGUYeNNl/<3CSl54-2017
• K H O A H Q C CONG N G H E •
yeu cau nude an uong theo QCVN 01:2009/8 YT.
Ham lupng sdt cdn lai ndm d mdc on djnh td 0,03 den 0,08 mg/1 vd bam lupng mangan cdn Iai d mdc 0,045 ddn 0,072 mg/I, hoan todn dap ling yeu cdu ddi vdi nude an udng cua chi tieu ndy theo QCVN 01:2009/BYT. Tuy nhien sau qua trinh mang sidu Ipc ttong nude vdn cdn xudt hidn coliform d miic thdp. Nude nen dupe khd trimg dif t hit tdt ed cdc nguy co vd mam benh trudc khi sd dyng dn udng.
Ngoai ra, qud trinh lpe mang NF cung logi bd dupe eae phdn td ehdt ran phan tan tinh nen nude sau Ipc cd dp dye nhd, dam bdo ydu cdu nude smh hogt. Hifu qua xii ly cac phdn tu khdng hda tan (SS, mudi Fe, Mn,...) cao hon nhieu so vdi cdc mudi hda tan.
4. BE XUAT CONG NGHE VA XU* L t NANG CAO NU*6C THAI HAM L Q M 6 THAN ©£ CAP NlTOfC SINH HOAT
D I nude thdi dam bao yeu cdu xa ra mdi trudng vd tdi sii dyng cho mye dich cdp nude sdn xuat vd
sinh boat, hf thdng XLNT HLMT bao gdm 2 cum cdng triiih: cum cdng trinh xir 1^ bde 1 h o ^ Hiifn vd cum cdng triiih xd Iy bgc 2 nang cao.
Bu&c 1. Xu ly bgc I: Nude thai HLMT dupe xd I^ trong cum edng trinh bfc 1 bdng phuong phdp hda ly hogc bda hpc dd loai bd SS, Fe, Mn,.. .dd nude thai dam bdo ydu cdu sd dung cho mft s6 mue dich san xudt (dap byi hdm Id, vf sinh nha xudng,...) vd gidm tai lupng d nhidm eho qua trinh xu ly nang cao tiep theo. Qua trinh xu ly bac 1 cd the dupe tridn Idiai kit hpp vdi qua trinh xd ly ngay tgi trgm XLNT HLMT (xit ly tang cudng) hodc la mdt phdn nude thai sau khi dgt muc B cua QCVN 40:2011/BTNMT dupe xu ly tidp tuc trong mft hf thing cdng trinh vd thidt bi rieng dgt yeu cdu chdt lupng nude ddu vdo cho hf thdng xu 1^ n§ng cao bdng phuong phdp mang Ipc NF.
Bu&c 2. Xu ly ndng cao: Cym edng trmh va thilt bi xu 1^ nang cao bde 2 la hf thdng Modul mangNF.
Sff do cong nghf
Hinh 5. Sa dd day chuyin cdng nghf xii ly vd tdi sii dung nu&c thdi HLMT
TAPCHfTAl NGUYEN NlSCSC 5(54-2017 83
• K H O A H Q C C O N G N G H E • Mang cd kich thudc Id khodng 0.001
micromet, Ap sudt dpng lyc cua mang NF thudng la < 40 atm, thdp hon so vdi mang RO. Dp ddy mang gdm ldp dd 150 fan, Idp da mdng 1 jun.
Dac tinh mdng la kieh thudc Id xdp <2nm, dp sudt ddng lyc thu 15 - 25 bar, tdc dp Ipc >0,05 m3.m- 2.ngay-l.bar-l. Cde edng trinh bgc 1 dupe xem nhu budc tidn xu ly eho qua trinh xu ly bac 2 nang cao de han chd tdc ngen mdng lpe, gidm lupng nude nia vd keo ddi tudi thp mang. Mang NF diing de loai bd cdc chat 6 nhiem cdn lgi (SS, Fe, Mn, ede kim logi ngng vd coliform) trong nude thai din muc dam bdo ehdt lupng cap cho smh hogt tiieo QCVN 02:2009/BYT hogc cdp cho an udng tiieo QCVN 01:2009/BYT. D I phdng mi ro, sau qud trinh mang sieu Ipc, nude ndn duac khd ttiing dl diet hit tdt cd cdc nguy co vd mam bfnh trudc khi su dung dn udng.
Theo so dd ddy chuyin cdng nghf ndu tren Hinh 8, chdt lupng nude thai sau cac qua trinh xd ly ddm bdo cac yeu edu:
- Xd ra sudi: Theo mue B cua QCVN 40:2011;
- Dap bui va rua sdn...: Theo mdc A cua QCVN 40:2011;
Tdm rua va gidt giii: Theo QCVN 02:2009/BYT;
- An udng: Theo QCVN 01:2009/BYT.
Qua trinh xu I;^ nude thai tien hanh theo 4 budc nhu sau:
- Bude 1: Xu ly nude thai bang phuang phdp keo ty - lang de nude thai cd the xd ra mdi trudng ben ngodi;
- Budc 2: Xu ly tiip tuc bdng Ipc cdt mangan dd tai sd dung nude thdi cho qud trinh sdn xudt khu vyc hdm Id;
- Budc 3: Xir ly tdng cudng bdng phuang phap Ipc dp lyc dimg vat lifu Zeonit - Diatomit de hdp phu kim logi ndng va cac hpp chdt hihi ca phan tan cd kieh thude nhd, de ddm bao nuac dgt QCVN 40:2011/BTNMT cpt A;
- Budc 4: Xu Iy ndng cao bang phuong phap mang sieu lpe NF dd tdch vi khuan, virus va cac chat d nhiem edn lgi ttong nude ddn dudi ndng
dp gidi hgn eho phep ddi vdi nude an uong.
Nude dupe tdi su dung cho myc dieh dn udng cua cdng nhdn khu vye HLMT.
5. KET LUAN
Qua nghidn ciiu de tai da xac dinh dupe tinh ehdt ddc didm cua nude thdi md than, ddc dilm nhiing uu didm nhupc didm cua cdng nghe mang lpe Nano, tu dd da nghien euu bd tri thi nghifm Pilot thye nghifm cdng sudt 5 m^/ngdy, ket qua da ehiing minh dd tdi su dung cho muc dich cap nude san xudt va sinh hogt nude thdi HLMT dupe xd Iy theo 2 giai dogn: hoan thien qua trinh xii Iy bac 1 (keo tu - ldng - Ipc ) va xir ly ndng cao (Ipc mdng NF) theo so do ddy ehuyen edng nghf vdi cae thdng sd thilt kd va vdn hdnh cdng trinh kdm theo ndu ttdn. Nude thai sau giai doan hoan thifn cd thi dimg phun suong dap bui ttong hdm Id vd sau giai dogn xii Iy nang cao dung dd tdm riia va sinh hoat eda cong nhdn (sau mang lpe NF).
TAI LIEU THAM KHAO 1. Tap doan cdng nghidp than va khodng sdn Vift Nam (TKV), 2016, "Bao cdo tdng kit cdng tdc BVMT cua tdng cdng ty nam 2016".
2. Tdng cong ty Dong Bde (2016). Cac kit qud quan ttdc nude thai cdc md than thupc Tdng cdng ty ndm 2016.
3. Trdn Due Ha, Trdn Hoang Anh (2014).
Nghien ciiu tai su dyng nude thai hdm Id de cap nude sinh boat cho cdng nhdn khu vuc md than. Tap chi "Xay dyng" (Bp Xdy dung), Sd 11,2014.
4. Hdi Khoa hpe va Cdng nghf md (2011).
Xu ly nude thdi hdm Id. Website: vinamm.vn, ngay 12/3/2011.
5. Tap dodn cdng nghifp than va khodng san Vift Nam - TKV (2010). Bdo cao Ddnh gia mdi trudng chidn lupc (DMC) Quy hoach phat triin ngdnh tiian din nam 2020, cd xet din ndm 2030.
Nguai phdn bifn: PGS.TS Le Vdn Chin Phdn bifn xong: 21/9/2n7
84 TAP CHfTAl NGUYEN N U ( 3 C S 6 4-2017