139 lines
4.6 KiB
Plaintext
139 lines
4.6 KiB
Plaintext
lire many miles oi asbesius pipe used in publie waiei
|
||
supply sysierns, more is a deliniie inieai oi holh
|
||
srorriaeri and bladder cancer iioin asbesios pariiclos in
|
||
waier supplies
|
||
|
||
rerrie and aluminium sulpiiare, sail, and lime are all
|
||
added lo waiei iu cause iinc pariieles lo niiecuiaie and
|
||
seiiie aul as clay in England, as pH increases due in
|
||
aeid rain, and in iaei wiieiever acid rain iiecurs,
|
||
aluminium goes inio soluiinn, and wiiii lead and
|
||
cadmium may bind iu proiein in vegelables and meal.
|
||
zspccia‘lv mosc boiled ursieained Even ii sali is added
|
||
lo kalng waler lo decrease inese oiiecls, levels iar
|
||
meedlng ibe m ug/l allowable ior inoae wub kidney
|
||
problems IN espeneneed Cooklng may inerease lire
|
||
waior eonieni oi meials by a iaeror oi 5 due io ibis
|
||
peoiein binding, and as well make me merals so bound
|
||
easy |o assimilaie in ilie body. Choking acidic
|
||
iubsianees in aluminium pm: simply worsens ibe
|
||
problem. A|umxmum iroiri aeidie rain leacliing now
|
||
riiouglii lo be a maior eause oi bee and lalce dealli.
|
||
Eeirie sulpiiaie may be saier lo use, especially if waber
|
||
is inilially or reasonably alliaime. obviously, iliese
|
||
eiiecrs need more sludy and any inorganic sail or
|
||
merallicsali diseives very raurious use,
|
||
|
||
WATER TREATMEN'IS COMMON“ USED
|
||
|
||
. AERATION (oxygzn-nun) by wind, meclianieal
|
||
aeianori, or by meieasing rurbulenee in liow. Aeiaiion
|
||
is also aebieved by trickle columns and vegerarion,
|
||
phymplankm, ui inyeeied air.
|
||
|
||
. sEn’LlNG spreading now in siiilewaior ponds or
|
||
rusii beds lo allow pariieles lo iall Dul, iilier our, or
|
||
iloeeuiaie.
|
||
|
||
. SKIMMING and SIEVING lo remove large organie
|
||
paroeies.
|
||
|
||
- FILTRATION via sand beds or charcoaleiibre
|
||
eulurnns, Sails, ilie iools niauuaiie pianis
|
||
|
||
- COACULATION or noccuumoN by using
|
||
eliemieal addiiiyes ilime, sail, ieiric sulpnares» oi
|
||
uiganic ibaereriall gels
|
||
|
||
- BIOLOGICAL REMOVAL by baeieiia, pnyio-
|
||
plankiori. and higher pianrs.
|
||
|
||
- pH ADJUSTMENT by adding calcium ias lime) or
|
||
sulpliur compounds as needed,
|
||
|
||
Fillnmu
|
||
A (usual and widely-used iilber is sand. bmam and
|
||
many dries use sand lilreis iollowed by sliloiiriaiion lo
|
||
|
||
clean seirled and krgalnd raw sewage waier
|
||
sedimemaiion Eiliraiion by slow drip diiuugii i,z in ii
|
||
ieeil uisand iioo iiali one. boeiom lialicoarsel ' used
|
||
even in iernpoiary rural camps ior water iillraiion, For
|
||
cuios, find sand beds wiih bi-ick bases aie used, ilie iop
|
||
l em (as incbl or so cal sand periodically swepi,
|
||
remoyed. and dried oi roasied io remove oiganie
|
||
parrieles beioie me sand is ieiuined
|
||
|
||
Activated ciiareoal, oiien iioiri bones or planis sucli
|
||
as willow or coeonui buslis, is also used as a fine lilier
|
||
in bornes and when pu is oi ibe essence. rine
|
||
dripsione iiinepored slonel used in waier cleaners
|
||
and eooleis io supply (ml waiei in homes
|
||
|
||
Tndde iilieis ilirougli sand and gravel columns
|
||
aciually ieed resideni bacieria whkh remove ine
|
||
surplus nuirieni. in less polluied environmenis, a
|
||
similar iaslc is carried ouibyiiesnwaler mussels
|
||
|
||
Carbon is esoenlial ior the removal oi nioogen or ior
|
||
iis conversion by baeieria lo ilie gross eomposiiion
|
||
Cgl-(yNOI, and ii is generally added as rarbohydnte,
|
||
which can be liquids suclii as oieilianul, eilianol, or
|
||
acetic acids, many or all o4 ibern derived iiooi planl
|
||
residues This is a bii Elie “addmg a lime Wine ea [ht
|
||
water" «I encourage me baeieiia iu work, Surplus
|
||
nibogen is ieieased by beacria m air Unless bacieria
|
||
are encouraged and allowed to work, nieraies move
|
||
easily duriugb sub-oils in wliieii no piano or bmi‘
|
||
can iive, and oan emerge in wells and sham,
|
||
|
||
in ponds iniended ior drinking liyii occlusion and
|
||
suriaee waier siabilisaoon ieduee bnili iurln'diiy, and
|
||
anus algae, lo a minimal uuaniiiy. Tire siabilisaiioin oi
|
||
banks by grasses and elump plarils rielpa eonsiderably.
|
||
Pond suriace slabilisers aie waier lilies, Awfln, and
|
||
waiei liyaeinrii. Bank siabiliseis aie iuneus, Scirpus,
|
||
various grasses and clovers, Phyln nadsaa iLippiiil, and
|
||
bamboo and pampas grass eluirips.
|
||
|
||
wicii rurbidiiy rnucli reduced, iiliraiion loads are
|
||
likewise reduced Li rig will runliiei reduce iurbidiry
|
||
iipi-i isaoor lusThisisassImpleu phdngaushdd
|
||
marble or immune a. a layer in a ianli, or caning
|
||
inamilimeoverapondbeioiemlingandiiinedessaryl
|
||
alier iilling Cruslied shell: or even wriole snells in
|
||
waeer ianks and ponds iiave iiie same eiieci, Eime
|
||
iloeeulaiu pariieles, causing ibeui ro senle out oi lire
|
||
waiei
|
||
|
||
nieie are several ieebnroues ior rilo-ioon, some orali
|
||
oi wiiicli can be used in series Eirsi, o-ielde rilbeis ul
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
HEIIIE 1.32
|
||
SAND F‘LTER
|
||
A basic oransei ibr miubbnwul oulium, Mint is uvwlm imm
|
||
|
||
|
||
|
||
bmloiumoe Suriaoesammnbemnuimmiw chm"!
|
||
asp-om IEDIWWW‘E-Ilmlm
|
||
|
||
|
||
|
||
173
|
||
|
||
|
||
|