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TRNG I HC KHOA HC T NHINKhoa Mi Trng

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Danh sch thnh vin nhm 7:

inhTh Mai Trang L ThM Li NguynTh Lan NguynNht Linh NguynThHin

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1. Tng quan v nhimnc: 2. Mt vi cht gy nhimnc

3. S nhimcabmtnc, cchx l. 4. nhim nc ngm v cch x l.

5. Tiu chun cht lng nc 6. X l ncthi

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1.1 Mts khi nim:

nhimnc: l sgimchtlngncc xc nhbi cc tiu chunvt l, ha hc v sinh hc.

Cht nhim l mt vi hpchtvt

qu mc cho php dnn gy hi chosinh vt.

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1.2 Mtsngun gy nhimnc R rtnhngbncha v ngdn,th

thngbthoihocnhngh chn lpchtthi

Trn hoc r r do tai nnNcthithotng nng nghipnhchn

nui, ti tiu S xm nhpmn. Rala v r rnc c tnh axit thotng

khai thc m Siuchnh khng thch hpvicoging Sthmngmca dng chytth, cng

nghip, nng nghip

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Nhngvn lin quan n nhimncbinirt nhanh chng.

Yutctrng

Thi gian tnti

Kch thcbcha

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Cht gy nhim

Chtthi c nhucu xy ha

Sinh vt gy bnh.

Du

Nhit

Lptrm tchChtc

Cht dinhdng

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3.1imngunncmt nhim (pointsources of Surface-water pollution)

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3.2. Ngunbindngcas nhimncmt. (non-point sources of Surface-water

pollution):

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3.3 Gimthiu nhimbmtnc:

Kim sot nhim cng nghip v thnhph thng qua lut .

Mththngcitin c sdngvtliut nhin lm schnc.

B sung chtx l l clo.

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Yutnhhngnmc nguyhim

Lngcht nhim

c tnh

Nng

Mctip xc.

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4.1 So snh tnh trng nhimncngm v ncbmt:

nhimncbmtPha long v phn

tn cc cht nhim oxy sn c v nh sngmt trigp phn lmgim nhanh chng hm

lngcacht nhim

nhimncngmKhnng phalong v phntn ca nhim c gii

hn.Thiu oxy trongnc ngmgit cht visinh vt hiu kh

(cn oxy) c th gipphn hycc cht nhim

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4.2 Trao igiancngm v mitrng xung quanh:

t, trm tch t, v thng qua ncngmi qua nhmt my lct

nhin.Nc c th trao ivtliuvit v

Nubmtt hoc nhim cao hoccha cc yutt nhin

chi cc qu trnh trao it nhin cth lm ncnhimc.

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4.3 Ncmn xm nhp.

Nguyn nhn:

Vicbm v oncngm

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4.4 Xl ncngm:

Bc quan trng lin quan nviciuchnhmtvn nhimncngm l:ctrngacht. (tnh nngnhthm, nhng

llnt, v cc cu trc acht ).

ctrngthyvn. (chiu su ncngm,hng dng chy, v tc dng chy).

Xc nh cc cht gy nhim v qu trnh vnchuyn.

Btu qu trnh x l. (loicht gy nhim,phng php vnchuyn, v cimca mitrngaphng).

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Phng php x l ncngm

Khai thccc ging:

bm v xlbng cch

lc, oxyha,..

Khai thchi: khaithc s

dnghi v

sau xl.

X l sinh

hc: cungcpchtdinh dng,oxy vsvphn hy

cht nhim pht

trin

Nnx lthmthu:

Khuynkhch strung ha

ca cc chtgy nhimbi cc qu

trnh hahc, vt l,

sinh hc

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Tng quan:

Phng php x l c s khcbitgia nngthn v thln:

Nng thn:bnghthngx l thng rc.

thln: ncthithngc thu ththng thot nc.

Ti nguyn ncangbthiuht.Cng nghmicngangc pht trinx l ncthi khngphi l chtthim l mtngun ti nguyn sdng

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6.1B thoixlncthi:

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Yutachtnhhngtichtlngcamththng

bthoi

Loit

Chiu su tngt

su mcncngm

a hnh

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6.2.Nh my xlncthi:

Mc ch :

Lm gim lng cht rn l lng, vi khun voxy cn thit trong nc thi.

B cc dng cht v cc cht v c c hi c

th c.

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X l nc thi hin ti thng c hai hoc

ba giai on:

Giaion s

cp

Giaion th

cp

Giaion

nng cao

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Gii quyt v x l bn:Mc tiu chnh:

chuyn i cc cht hu c ti mtdng tng i n nh

gim khi lng bn bng cch loi bcht lng

tiu dit hay kim sot vi khun gyhi

sn xut cc sn phm c th s dngbn lm gim chi ph bn

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Cch x l:

t.

Chn trong bi rc. Chn lp ci to t . Thi ra ngoi i dng.

6 3 Ci t thi

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6.3 Ci to nc thi:L qu trnh ci to cht lng b nhim.

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6.4 X l nc thi nh khi phc tinguyn:

Qu trnh x l s to ngun ti nguyn nh :

Kh metan ( c th s dng lm nhin liu). Sn xut cy cnh hoc cc cy khc c gi

tr thng mi.

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Ti liu tham kho:

Environmenal geology (Edward A. Keller)

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