Mechanical aeration cleaning

This process, according to the manufacturer,54 has been developed in such a way that space requirements are kept to a minimum. A BIOPAQ IC reactor is used as the initial step in the treatment process. The name of this anaerobic reactor is derived from the gas-lift driven internal circulation that is generated within a tall, cylindrical vessel. These reactors have been operational in the paper industry since 1996. The second step in the purification process is a mechanically mixed and aerated tank. The aerating injectors can be cleaned in a simple way without the need to empty the aeration tank. Potential scaling materials are combined into removable fine particles. At the same time, the materials that may cause an odor nuisance are oxidized into odorless components. The process can be completed by a third and a fourth step. The third step focuses on suspended solids recovery and removal. The fourth step is an additional water-softening step with lamella separation and continuous sand filters in order to produce fresh water substitute. The benefits claimed by the manufacturer are as follows54 ... 

Because of the ability of glucoheptonates to chelate calcium and iron and dissolve rust films without attacking the bare metal, they are very useful as metal surface cleaners. They are often considered a ferrous corrosion inhibitor, but the real function of these chelants is their ability to dissolve iron- and calcium-rich deposits on the metal surface, within a pH range of 5 to 9, and to provide clean metal surfaces. Thus they permit access by other true corrosion inhibitors and help to minimize differential aeration and under-deposit corrosion mechanisms. 

Conventional mechanical flotation cells have been widely used in the industry for many years and remain the primary means of cleaning coal particles smaller than 100 mesh. These units consist of a number of cells (usually 4-6) connected in series, each cell containing a mechanical agitator and aerator. The feed slurry, pretreated with frother and, usually, collector reagents, passes from one cell to the next with the most floatable coal being recovered in the first cell and the least floatable coal in the last cell. 

Some recommended shoreline cleanup methods are natural recovery, manual removal, flooding or washing, use of vacuums, mechanical removal, tilling and aeration, sediment reworking or surf washing, and the use of sorbents or chemical cleaning agents. 

Shoreline Type Condition of the Oil Natural Recovery Flooding Low-Pressure Cold Water Low-Pressure Warm Water Manual Removal Vacuums Mechanical Removal Sorbents Tilling/ Aeration Sediment Reworking/ Surf- Washing Cleaning Agents... 

The tap is cleaned mechanically, hoses, strainers, aerators, etc. are removed. 

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