AQUATEST a.s. TECHNICAL SUPPORT DIVISION - 70. Modular units for mine water disposal A set of...
-
Upload
ashley-walton -
Category
Documents
-
view
219 -
download
0
Transcript of AQUATEST a.s. TECHNICAL SUPPORT DIVISION - 70. Modular units for mine water disposal A set of...
Modular units for mine water disposal
A set of technical equipment designed for mine water disposal is conceived as modular and enables high technological and
partially also capacity flexibility. It includes basic operations – performing chemical reactions (acid base, precipitation, oxidation, and reduction), separation of solid body and
additional treatment of purified mine water.
In practice, these modular units have been tested in the former fluorspar mine at Běstvina village
Běstvina
Module 1 – preparing chemicalsThe module includes technical equipment for
preparation of water suspensions, chemical solutions, and other auxiliary substances for
use in other modular units.
View of the mixing tank with lime suspension
Detail of two dosing pumps for
lime milk, rated capacity 100 l/hr,
controlled by frequency converter,
depending on pH set
Detail of two dosing pumps for
chemicals, rated capacity 5 and 17
l/hr
El. distribution box with LAVO control
unit
The module is designed for performing all reactions in
liquid stage, notably for mine water neutralisation, iron
oxidation, reduction, chemical precipitation of individual contaminants, etc. Overall
views of reaction tanks arrangement.
Distribution system of module 2 with built-in pH meters that control frequency converters of dosing pumps of
module 1
View of crude water inlet to the first reaction tank, and the second reaction tank with pH measuring
and inlet from dosing pump.
Crude water inlet to this module with flow regulation and
measuring
Module 2 – Chemical operations
This module includes a set of regular process
equipment to separate solids from the solution by
sedimentation and filtration. Filtration equipment is part
of the module.
Module 3 – separation of phases
View of the screw pump and distribution box with
built-in frequency converter, which depending on the
pressure controls the screw pump
continuously during filtration to fill the
sludge press evenly.
From this tank (sludge tank),
filtration is carried out through a
sludge press under the pressure up to
10 bar.
View of the filtrate and sludge tank.
Down to the left is a pump that pumps water to dispatch
tank through control valve.
Module 4 – auxiliary operations
Module 4 is conceived as an auxiliary unit for modules 1 – 3.
It includes pumping technology, storage and
interoperation capacities, set of flexible connections, etc.
Top view of the from the tube setter where
gravitational separation of solid base takes place. At
the front – suspension prior to sedimentation, at the back
– clean water overflow.
Detail of suspension at the inlet of tube setter.
Detail of clean water overflow from tube
setter