All effluents from oil shale thermal treatment by the Kiviter process are
concentrated into three main wastewater streams: 1) process water containing
mainly physically and chemically bound water liberated during semicoking;
2) industrial wastewater containing effluents of different origin, collected
from the factorys territory; 3) ash dump leachates containing different
dissolved pollutants (phenols, mineral salts) from semicoke and other
deposited solid wastes.