125 lines
3.7 KiB
Plaintext
125 lines
3.7 KiB
Plaintext
homes al >05 ppm can (lube massive Wan cumin
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nauon m sods, and ulme Ll) ppm n lunnlul lo soll Me
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and plants Thus, we need lo use plaln soaps on mp ll
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posulsle, and mule more complex pollulanls m nee
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sys|rms (well-mommred), as woody ptrznm-Is can
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cope benn man gardzn vzgel-hlu, and allow more
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nme Icrdzcnmposlhon ollang—lenn pollulims.
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ln mueal mas, and espedauy in avid nr delleal.
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envllvnmenls, we may need lo aeale bum spoelal soaps
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lunpouuled ods, polasn or sodium and plam speoal
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exops whxdl remoye ease-us lmany waler planlsl
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belole pisimg on gxlywaler lo lhe sods and sneanu
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Th: no blanket polley. only spenne cnws when we
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on expect to 5am yleld and also clean up waler If we
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know me eomponuon ol soils and soaps
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75
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THE PURIFICATION OF PDLLUTED
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WATERS
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rne mlly Icngrlzml .nsuxanse ol good wam supply lo
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a selllemenl .s by Xlgomus eonuol ol a [ornsled
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enlelunenl, Inclndlng a |o|a| ban on uloeldes and
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meullic ploeessmg. As lneae me lew such elean areas
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lell In due wand, nouse wool lanks must do [or me
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loseseeable [Mum 'l’he 30—40 addluyes (ammnnly
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mooduced uno walee supplles me onen pollulanls m
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lhemselves lo lnal muezsmgly senslllue senor ol
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socluy devdupmg allergles lo any lype 0! modern
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po||ul2nL Thy nddmves Npmsenl lne end poml ol
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lne technologlcll [IX polluuon ls “llxed‘ by lunhu
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pollulion
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Hereln, I will stress on mulogual uealmenl ol
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mmnmncunl-mminu, me only waler sale loaus isalm
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me [or on." llvlng llnngs. For nulluua we have
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sxlsled on walex supplies eonlanung neallny plans and
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fish, and .l we keep namnl wine's (me ol laeeal and
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.nduslnal eonumlnams, we an eonunue lo do so ms
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ii not so much a miner ol Wiler uealmenl, ns lne
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paeyenllon ol polluhng amwnes.
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However, luv many ("sling clues and lowns, sewage
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and slamwakr supp cs muse eonunue lu leplesenl a
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-disposal pmblpm“. A! me waslewalers ol upaneom
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selllemenu alo me dunking waters or downsneam
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nus, aux duly ‘5 lo alas: lnam any selllemenl only
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wales of sumnemly good quahty Io be sale|y useaole
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by olnen.
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The problem contaminants .nosl llke‘y lo alleel
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dnnhng naler ale
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. TURBIDITV. sul and tuna pameles suspended .n
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th! water,
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. BACTERIAL or ORGANIC polluuon [mm sewage.
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and as de<ay ploduels. e g r on, dlsease orpamsms
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and viral or pmmvoan palhoge’ns, parasmr worm Eggs
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and so on
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- METALLIC POLLUTANTS such as (hmmlum.
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eadsnluln, lead. mury
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. alochE. e , Aldrin, nleldnn, 2. H); 2. 1.5T;
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dmxm, PCE. :Ic lorganaphosphalcs, halogenaled
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nydmeaxbonsl
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- sxcesswz FERTILISER, espmally m|m§umus
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eompouods. pnuspnales, sudlum and polasnulnsaln
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. ACIDS or dude/omunp (Dmpounds «a pH less
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man s 5 mouse: melallle pnllunnnl
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Many ol lnese laelnrs lmencl Acid mil dlssolyes oul
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ol rotks and soll polsonous [arms 0! alumlnlum,
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mtrtuw, lead, cadmlllm, and selonlum, or olnu mails
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suen as copper, nKkel, and lead lmm dnnkmg mulls,
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lea urns, and hot wakr lanks Drgdnlsm: may eonyen
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lnuxgamt mzxury m naymc lonns las happened m
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Mmaanala, lapanl mm are readllv ansonaed by me
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body. Sewage m waver alds «uen conversion lo
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olologlcally amve metals.
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Memflk lunglnde dmsmg on seeds has nol only
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caused dneel paiwnmg at people Mm haw ealen lne
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seed, oul also poisons lne sod Excesslve amllelal
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lemme! "messes aquaue .ologleal aenvuy, wluen
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resuks m lunher uplih: ul metals m node was, and
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so on. ln blondts, Aldnn prevonls DDT bang exmled:
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lne (umbinalmn IS deadly lone (an nuy Inn mix .n
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Auslralla and me mud world, ur [Anne's will aelueye ll
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by sueeesslve spray, um ls n slable lesldunl pmson
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eodsnlllnp wlln waler, so ma. dlsllllalmn wlll nol
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nelpl. An adduloual lhmal lo publle nenlln cnmes lmm
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FIGURE 1.3!
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Hmumsln FLUSH mllns
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wmv uu ln ninnhumslmu‘ equals um lnr um; so u- «an nu
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mu, m than. mm o used m loans. nnlomu unx can mun
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um mum and mess firm! In Inlll'l
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172
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