| Q |
How is
cyanide waste treated at your facility? |
| A |
Chemically
speaking it looks like this CN + 2H20
-> NH3 + HCOO.... in laymen's terms
we destroy cyanide using Thermal Hydrolysis.
This simple and naturally occurring
chemical reaction is accelerated dramatically
in the CDS process by using elevated
temperature and pressure. This chemical
and chlorine free process guarantees
complete destruction of all cyanide
complexes, even iron. |
| |
|
| Q |
Is there
any type of Cyanide complex that cannot
be treated? |
| A |
At CDS,
we have yet to encounter a Cyanide complex
that could not be treated with our technology
and Cyanide systems. We have been successful
with all Cyanide complexes - including
iron Cyanide. |
| |
|
| Q |
Does
Cyanide waste require chemical treatment
of any kind? |
| A |
The only
chemical treatment necessary occurs
in rare cases of an acidic Cyanide solution,
In this situation it requires a pH adjustment
to above 7. |
| |
|
| Q |
Without
using chemicals, how do you treat Cyanide
waste? |
| A |
CDS leverages
a naturally occurring reaction between
water and Cyanide. We substantially
accelerate this normally slow process
using elevated pressures and temperatures. |
| |
|
| Q |
What
are the treatment by-products? |
| A |
Our Cyanide treatment systems break
down the Cyanide into ammonia and a
formate salt. In doing this, no harmful
by-products are generated. |
| |
|
| Q |
Why do
you manufacture both Batch and Continuous
Flow systems? |
| A |
Each
system is designed to handle different
Cyanide concentrations. A Batch System
is used to treat high concentration
solutions such as spent electroplating,
stripping baths, as well as Cyanide-contaminated
sludges. A Continuous Flow System is
used for high flow rate but lower concentration
streams such as electroplating rinse
water, aluminum smelter pot lining leachate,
coke oven gas scrubber liquor, and chemical
/ pharmaceutical industry washwater. |
| |
|
| Q |
How much
does a system cost? |
| A |
System
costs vary depending on the type of
system (Batch or Continuous Flow), size
of systems, waste volume and characteristics,
level of automation, ancillary equipment,
and materials of construction. Please
call a CDS
representative
for a quotation based on your specific
requirements. |
| |
|
| Q |
What
are the operating costs of a system? |
| A |
Electricity
is the major cost associated with the
operation of a Cyanide system. Typical
energy usage for a Batch System is about
0.4 kW-hr/L. For a Continuous Flow System,
the typical energy use is 0.05 kW-hr/L.
Depending on electrical rates, operating
costs are approximately 2-3 cents per
litre for a Batch System, and 0.3-0.4
cents per litre for a Continuous Flow
System. Additional costs may be incurred
if there is a need to pre-treat or dispose
of the treated solution, as required
by local regulations. |
| |
|
| Q |
What
other expenditures can be expected? |
| A |
Aside
from the system and operating costs,
the end user is responsible for installation
charges. This involves the connection
of all piping between the CDS skid,
the supply and discharge tanks, as well
as connecting all other termination
points. This includes, but may not be
limited to, electrical, instrument air
and pressure relief terminal points.
Periodically, parts for preventative
maintenance will be required. |
