Waste treatment by submerged-flue incineration and stabilization process (SIAS-process)

Abstract

Various kinds of wastes are generated as a result of industrial and scientific activities. These wastes are broadly classified into two categories: organic wastes (containing benzene, hexane, alcohol, organic chloride compounds, etc.) and inorganic wastes (containing heavy metals such as lead, arsenic, and cadmium). Organic liquid wastes exist as combustible liquid waste, less combustible liquid waste and noncombustible liquid waste. Inorganic liquid wastes often contain a high concentration of heavy metal ions. The submerged-flue incineration and stabilization process (SIAS-Process) presented in this paper enables the simultaneous treatment of organic liquid wastes and inorganic liquid wastes containing heavy metal ions. The SIAS-Process consists of submerged-flue incineration for organic liquid wastes, and chemical stabilization process for heavy metal ions. The final products are stable iron oxide compounds with low solubility or leachability which satisfy the requirement criteria for disposal. When fitted with an additional reaction tank, continuous operation of the SIAS-Process can be achieved.