Upgrade of clarifiers at energy facilities with the use laminar modules

Summary

The need for upgrading clarifiers of obsolete and outmoded design is substantiated. The clarified water quality and capacity of these facilities do not meet the modern water treatment requirements which can be explained by the design and technological characteristics of these facilities. The suggested technical solutions aim at the elimination of such deficiencies as unstable turbulent mode of the suspension settling in a sufficiently high layer (1.5–2 m), low volume utilization factor of clarifiers, the lack of an efficiently operating flocculation chamber. The experience of introducing laminar modules in the water treatment sections of energy facilities is quoted. The upgrade of pretreatment facilities, production of clarified water with low suspended solids, iron and organics concentrations will provide for improving the technical and economic performance of the water treatment units and introducing advanced technologies at the subsequent water treatment stages.

Key words

natural water , membrane technology , clarifier , honeycomb module , pretreatment , laminar module

The combination Actiflo – MF/UF membrane: an efficient solution for surface waters

Summary

Process schemes of surface water treatment with membrane filtration in most cases at the final stage require advanced clarification technologies that provide for efficient removing color and high concentrations of organic and suspended solids from raw water. Therefore, «Actiflo^® – ultra- and microfiltration» process scheme is the optimal solution for drinking water purification. The results of pilot tests of «Actiflo^® – ultra- and microfiltration» process scheme are presented. The experience of operating the plants using this scheme is generalized.

Key words

coagulation , ultrafiltration , microfiltration , surface water , microsand , flocculation , pretreatment , Actiflo® process scheme