CLEAN UP TIME: Pollutec Operations,
Australia, has come up with a technology to extract litter and other
solid debris from urban stormwater
drains. The process, known as
Continuous Deflective Separation, is
likely to prove a boon for cities since
it removes virtually all water-borne
polluting solids such as packaging
materials, bottles, cans, plastic containers etc. The process works quite
simply. a stainless steel perforated
screen is fitted in a hydraulically balanced chamber set in the main pipe.
Water passes through the deflection
pipe, but solid items are diverted into
a central catchment chamber.
DREAMS COME TRUE:
The production of
energy from ocean
waves has come
within the realm of
reafity courtesythe
hydropiezoelectric
generator developed by Ocean Power Technologies,
New Jersey, USA. The generator
comprises a thin panel made from
polarised polyvinylidene flouride,
attached to a float and a battery unit.
When ocean waves move the float
and stretch the panel, some molecules get displaced, releasing positive
and negativecharges. Electrodes capture these charges and store them in
batteries located at the base.
ECO-FRIENDLY CIRCUIT BOARDS: Printed
circuit boards need no longer be perceived as environmental headaches.
NEC, the Japanese electronics giant,
has developed a technology that
increases the proportion of recy
clable material on printed circuit
boards from 20 per cent to 70 per
cent. The new know-how would
enable the recycling of solder glass
fibre and epoxy resins. This is how
the process works: the circuit board
is heated using infra-red radiation
and the components are then
dismantled. It is then pulverised
and separated into a copper-rich
powder and a glass fibre resin
powder.
ONLY GREEN: From
waste water treatment technology to
J commercial horticulture - that's the
path chosen by Ion
Exchange (India)
Ltd. A new company, Ion Exchange
Enviro Farms Ltd, will spearhead this
diversification by developing 40,500
ha of fallow land into orchards using
hio-intensive farming methods. The
company will undertake farming of
proven cash crops like mango and
cashew. The initial thrust areas will
be Maharashtra and Tamil Nadu
with the first project being set up in
Mangano taluka of Raigad district in
Maharashtra.
SQUEAKY CLEAN BATHS: Aquarian
Overseas in India has devised a new
green geyser that is likely to create
waves. Its major eco-friendly and
user-friendly features are that it does
not have a metal body, conserves
both heat and water and is made
from non-corrosive materials. In
addition, the geyser does not require
the normal safety devices found in
other geysers. Its inventor, S Mathur,
also claims that the geyser is electric
shock proof. At a more esoteric level,
the green geyser has a vent which
allows toxicants from chlorinated
water such as tri-halo-methane, trichloro-ethylene and chloroform to
be released.
REFINED WAYS: When the Indian Oil
Corporation's
Panipat refinery
is commissioned
in 1997, it is likely
to be greener than
any of its counterparts in the country. On the cards are green belts, an
ecological park and air monitoring
of surrounding areas. Also to be set
up is an effluent treatment plant to
recycle a part of the effluent. To
prevent air pollution by sulphur
dioxide, construction of a sulphurrecovery unit will also get underway.
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