Surgil ESIA Report - Volume III - EKN

“O’ZLITINEFTGAZ”
open joint-stock company
FS «Complex development of Surgil field
with extracting of valuable components»
wastes and not to the volume (weight) of hazardous components separation and concentration
procedures allow reducing according expenditures considerably.
Off-site disposal. This type of activities is regulated by the environmental legislation, technical or
economic appropriateness factors or on a contractual basis. With all this the technicality of wastes
processing, transportation to the place of processing and secure disposal of unrecyclable residual must
be provided for.
Recycling. In technological respect this method does not differ from the previous one except
wastes processing occurs at the site. Appropriateness of such processing depends on economic
factors.
Secure disposal. This method is the least preferable one among the others concerning
neutralization of hazardous components.
Taking into account physical and geographical conditions of UGCC location, wastes disposal
technologies availability and profitability of wastes disposal they decided to arrange a special site for
the process wastes neutralization and temporary storage as well as the solid domestic wastes disposal.
The primary reasons for such decision are both lack of effective enough technologies and
economical appropriateness of the other methods.
Storing and long-term storage of wastes is carried out at the specially conditioned site. This site is
an area divided into two sections. One section is intended for domestic wastes disposal by carting
method. This section is divided into carts filled with domestic wastes taken here by dump trucks,
evened then by excavators and finally covered with earth. Carts are separated from each other by
concrete roads for dumpers access. This section receives solid domestic wastes from UGCC and
UGCC dwelling settlement as well as low-hazardous process wastes such as water-conditioning
coagulants’ slime and compacted sediments.
The second section is equipped with the special tanks and bunkers. Method of storage is safe for
environment. The following types of wastes are stored here:
• activated coal;
• molecular sieve;
• catalysts from sulfur recovery unit;
• sodium salts;
• silica gel;
• high-viscous fuel;
• aluminum oxide, etc.
Since generation of the I and II hazard class wastes occurs episodically – catalysts and
adsorbents change, process drums and equipment cleaning, accumulated during operation watered
residues (oil-slimes, condensates, oils, etc.) they are discharged into accumulator tanks. For disposal of
content of those tanks they apply burning or off-site disposal as the most appropriate method.
The Project provides for the actions on the noise level abatement.
Out Side Fence Limit of UGCC the noise generated by UGCC units should not exceed 75dB
value. Mentioned Out Side Fence Limits are shown in the picture below.
When arranging plants in one building the following noise limit should be maintained – 85dB in
Book 5. Declaration of environmental impact concerning UGCC construction
38