Micro sanded

Actiflo 20-70 50-175 Micro-sand ballasted flocculation and lamella clarification Kruger... 

Microsep 20-40 50-100 Micro-sand ballasted floc- culation/solids contact and clarification Veolia Water... 

Advantage has been taken of this effect in fluidized bed flocculators in practice, which use micro-sand on which flocculation takes place. This development, which was pioneered in Hungary, now appears as the Cyclo-floc process. The sand is coated (activated) with an alginate flocculant, and incoming suspensions of flocculent aluminium or ferric salts are flocculated by the fluidized bed and retained on the sand. A continuous discharge of some floc-coated sand, recycles it through an external washing process which separates the floe and the sand. The cleaned sand is continuously fed into the tank inflow to sustain a steady-state process. 

Because of the cost of mains water, many companies have utilised on-site boreholes as their water source. Such water, percolating through the soil, will be much more contaminated with micro-organisms than the mains supply and will require treatment before use. River or canal water will contain even more micro-organisms and, although after sand or other filtration may appear clear, it still represents a significant contamination hazard to products in which it is used. 

A solid matrix, (sand and/or gravel) around which SRB can establish micro-environments... 

Our world can be studied at different levels of magnification. At the macroscopic level, matter is large enough to be seen, measured, and handled. A handful of sand and a glass of water are macroscopic samples of matter. At the micro-scopic level, physical structure is so fine that it can be seen only with a microscope. A biological cell is microscopic, as is the detail on a dragonfly s wing. Beyond the microscopic level is the submicroscopic—the realm of atoms and molecules and an important focus of chemistry. 

The great philosophers of antiquity discussed quite a number of world views, such as the atomic theory, determinism and indeterminism, relativity and evolution, and yet none of them conceived the cell theory, which makes us wonder why. The fact that they did not have the microscope does not seem to be decisive from a conceptual point of view. Even atoms cannot be seen, and yet the atomic theory was explicitely formulated. The problem is therefore the following Why could ancient people think about atoms but not about cells The idea that matter can be divided into particles is suggested by many facts of daily life a house is made of bricks, a desert is made of grains of sand, drops of rain can be turned into a river, and so on. Why not add that organisms are made of micro-organisms ... 

Hein, M., Pedersen, M. F., and Sand-Jensen, K. (1995). Size-dependent nitrogen uptake in micro- and... 

L. Hagdahl, Acta Chem. Scand, 2, 574 (1948). The definition of the diagrams of the chromatograms, by frontal analysis and displacement development, was improved markedly by the ii.se of a series of three small columns connected to a micro-mixer (a capillary filled wdth quartz sand) which led directly to the cuvette for the interferometric readings. 

Micro-crystals (Crystal sand)—Bellandonnae Radix, Cinchona, Stramonium, Phytolacca, Capsicum. 

Obvious fault related micro-structures include fault parallel clay laminae only (see Fig. 5 in Sverdrup and Prestholm, 1990). Although the deformation process was dominated by sand mobilization and clay smear, no evidence of a relative denser physical packing of grains in the fault zones compared to the channel sandstones were observed, a phenomenon which usually characterizes synsedimentary faulting (Allen, 1992). Furthermore, no textural evidences of fault-related cataclasis was observed. From observations on both meso and micro scale, these faults therefore could easily have been ignored/overlooked in core studies. 

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