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Strict adherence to cement kiln eco-guidelines urged
By Dan Na (China Daily)
Updated: 2009-12-24 07:49
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| The co-processing treatment of hazardous wastes needs to adhere to very strick standards of environment protection and risk control to counter safety and health concerns. |
Heavy metals are always present in raw materials and a certain amount of the element in cement is common. As part of the process, they are firmly locked into the structure of the cement, with no possibility of leakage or seepage.
Frederic said: "All the research that we've conducted shows that the heavy metals stabilized in the cement will be there in perpetuity. People need to have no worries about the safety of the product as a building material."
Studies into the potential of co-processing began almost 40 years ago. All the research date shows that, if the process is carried out responsibly, there is no possible negative impact.
The study noted the importance of adequately training technicians and transferring knowledge from other countries with previous experience.
Kre,chief scientist & special advisor of the Norwegian Foundation for Scientific & Industrial Research, said: "I hope that we can reach out more to more Chinese cement companies. I cannot over-emphasize the importance of running this process strictly by the book. Safety and security are a crucial part for the people involved in the operational process."
Echoing his words, Frederic said: "When a plant is starting to process raw material, it should be obliged to secure a permit from the local environmental government body. This should clearly state which wastes the plant is authorized to process and to which specific volume.
"Safety and security measures during the selection, transportation and unloading of the hazardous waste are all crucial parts of the operation. It is vital that all the relevant safety protocols, as outlined in the guidelines, are observed at all times."
