Improvement of the clarifier with suspended sediment layer construction in water softening technological schemes
Journal Title: Вісник Одеської державної академії будівництва та архітектури - Year 2017, Vol 1, Issue 68
Abstract
The calcium and magnesium (hardness) ions in water causes scaling in boilers, heat loss in heat exchangers and more problems in industrial equipment and edifices. Water softening is a familiar process for solving hard water problems. Separation and removal of hardness ions is called softening. Water softening is almost a common unit operation in many industries and makes the water suitable for use in cooling towers or prepares it for additional purification. Disadvantages of existing water softening methods are: high temperatures of process passing, what causes significant energy costs; high cost of some reagents; some substances can cause appearance of additional compounds, which supposed to be removed or neutralized. Lime-soda is widely spread method and one of the most important facility in current technological scheme is clarifier with suspended sediment layer. In our research we tried to find ways for its improving, simplifying and decreasing exploitation costs. Due to received results we may claim that the reconstruction of clarifier with suspended sediment layer by replacing switchgear, air separator, horizontal perforated partition, sludge receiving windows to expanded polystyrene filling and holding grate will be a great solution nowadays. Applying lime-soda method on reconstructed clarifiers is a new way of water softening and it allows to hold water softening process in one facility, decrease washing and energy expenses.
Authors and Affiliations
L. M. , Odud
Keywords
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