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Efficient, low-energy process helps producers comply with clean water standards
Because of its high pH and variety of fine suspended particles, process water from the concrete industry, such as wash water from concrete mixers, can harm aquatic life. In many countries, its discharge into streams is therefore regulated. To help avoid this hazard, FibraTM Technology Ltd. has developed an innovative treatment process that has proven to be particularly effective in full-scale installations at a number of precast concrete production facilities in Europe. The system is now available in the Americas.
This technology can be used to bring process water to an acceptable quality level for discharge into local water streams or for recycling within the concrete production process. Because the filter has unique features that make it easy to adjust, particle size removal can be precisely controlled to meet the required treated water quality. The Fibra process can also be combined with postfiltration settlement for further treatment by nonchemical flocculation and coagulation.
Along with contaminant removal, pH control can be achieved by introducing carbon dioxide into the process water within the Fibra unit. There, extremely efficient gas contact and mixing takes place to form carbonic acid and reduce pH. The pH of the filtered water is measured and controlled by the integrated control system to meet the discharge requirements, or to fully neutralize the treated process water for recycling on site, thereby reducing water supply costs.
INNOVATIVE DESIGN
When compared with existing alternatives, the Fibra process...