摘要:
The invention refers to a process for obtaining health- and environment acceptable construction materials from the soil containing water soluble compounds of heavy metals, which are harmful for health and environment and the content of which essentially exceeds still acceptable border values. During the first step such contaminated soil is prepared, upon which a dispersion of Fe nanoparticles is admixed to said soil, which is then followed by adding of bentonite clay in powder form and homogenization. Upon that, calcareous fly ash is added, which is optionally followed by adding water and mixing.
摘要:
A device and process for the remediation of water from small biological treatment plants. The invention envisages a remediation device for water remediation, which is connected to the outflow pipe of a small biological treatment plant (SBWTP), and connected to a water supply system for the consumers, consisting of a nano-remediation unit, oxidation units, and ion-exchange and filtration units. The process of water remediation is also envisaged, which leads to the purification of water to the quality of drinking water, the process comprising the steps of nano-remediation with zero-valent iron nanoparticles (nZVI), purification with oxidizing agents, ion-exchange purification and filtration on granular activated carbon. Finally, remediated water is suitable for all secondary human needs and for use in industry, for example concrete making.
摘要:
The invention refers to a process for obtaining health- and environment acceptable construction materials from the soil containing water soluble compounds of heavy metals, which are harmful for health and environment and the content of which essentially exceeds still acceptable border values. During the first step such contaminated soil is prepared, upon which a dispersion of Fe nanoparticles is admixed to said soil, which is then followed by adding of bentonite clay in powder form and homogenization. Upon that, calcareous fly ash is added, which is optionally followed by adding water and mixing.