The times dispatch. [volume] (Richmond, Va.) 1903-1914, 1903-11-01

Il the natural constituents Of the water
NIGH mako, Il. less suitable for domestic
81 hTa tot 4, dgss TIE iSs work an q
TIE water, docs il 40 4 more economl-
chilly than other recognized processes?
Those who have had tho opportunity
OF witnessing this process In operation
must admit that Of, a small scale. It
does produce a clear water very rapidly,
but 1t must be borne in mind that an
equally clear water can be obtained by
several recognized methods OF treatment
which have the advantage or having been
extensively used on q large scale.
AZ. regards the second point. the effect
OF the treatment on the water It should
process, SO far has been almost entirely
NOTWITHSTANDING and boiler usos. For THIS
purpose " DeleyH II has very grea,
electric installation Is already part u
the plant we believe, 1t can be used to
g great advantage. When, however. II is
n Eh to 5rsss the srs entire snpPy nsd
serious problem Is involved. In the pro-
cess. plates composed Of aluminium,
nickel and tin are. employed as electrodes,
action taking place without q certain
amount Of these metals being dissolved
off tho plates, and In case OF the nickel
and TIN partly east ma y,
associated with the inventor at the de-
monstration that on examining guam
tity OF about six and one half gallons Of
nickel. arsenic and tn, were not found
to an appreciable extent. and that James
River water or almost any water would
show traces Of nickel, tin and arsenic, 4
may be found in, very minute traces III
many waters, but nickel and tin have
not been found In any natural water to
our knowledge. and certainly do not ex-
t~t Ia, II rryof toy VI
1t is the province the doctor rather
than the chemist to- SAY what would be
the effect on health of even unapprecia-
cs Of these I'M etas
food or drink. which are part Of the
daily consumption Of the people, even
the falntest trace Of any OF the poison
able
AS matter Of fact, we do not believe
that the amount OF these metals present
in the treated water is negligible. as III
lied by us. We found strong traces OF tin.
The third question, Of the cost oil work.
ing this process, we would only touch
or 50 farSas It involves the actual COST
Is admitted that the Goa ulatng agent
In this process Is aluminium dissolved OF
one OF the electrodes by the electrolytic
action and precipitated or thrown down,
as a hydrate Of aluminium. which. en-;
tangles with it the finely divided mud
and other impurities IN the W. water. carry;
light brown precipltate. which settles
rapidly. In other words: we have here
simply coagulation by the same COM
pound as Is formed when small amount
Of ordinary alum is added to the water.
The action Is the same In both cases;
the alum. which Is essentially aluminium
combined with sulphuric acid, Is deconi:
posed forming the same S ny hydf n1setr 81
.lytic action. while the sulphuric acid
unites with the lime in the water. forming
lnnocuous sulphate of lime.
It would appear. therefore. to be very
expensive method Of 4. conducting alum
coaeulation,. to produce your hydrate &C., OF
minum itself by an electric process. which
calls for additSna expense for efee al
minuH. in the same amount. can be pro.
'duced BY the simple addition |" 1.-THE nee
essary amount OF alum-one OF the cheap
est salts In the market.
FRoETILING & ROBERTSON.
Richmond. Va, October both