4.14.1.
Use-specific instructions
During the shutdown of production, it is recommended to counteract microbiological growth inside the membrane elements. Before the shutdown, the plant shall be cleaned first, to remove all sorts of deposits like carbonates, salts, silica, organic matter or biomass. For this purpose, specialized membrane cleaners are used. After cleaning, the plant is flushed with permeate quality water until neutral pH is achieved. Only after these cleaning steps, CMIT/MIT containing water is reaching the plant and is regularly circulated by slow pumping. The biocidal product shall be added to the fill-water (permeate quality), to avoid microbiological growth during longer shut downs. During longer shut downs, the fill-water shall be regularly circulated by slow pumping and sampled to check for a microbiological re-contamination. A shift in pH can be a first indication of a re-contamination by microbiology. In this case the fill-up solution must be replaced.
The dose strongly depends on the formulation and intended use of the product to which the preservative is added. Therefore, the user shall determine dosage requirements for their specific matrix/system to be preserved. The lowest effective dose shall be used.
See general directions for use.
4.14.2.
Use-specific risk mitigation measures
See general directions for use.
4.14.3.
Where specific to the use, the particulars of likely direct or indirect effects, first aid instructions and emergency measures to protect the environment
- 4.14.4.
Where specific to the use, the instructions for safe disposal of the product and its packaging
- 4.14.5.
Where specific to the use, the conditions of storage and shelf-life of the product under normal conditions of storage
- 4.15.
Use description
Table 15
Preservation of white water circuits (short circulation) in paper industry (PT 12)
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