Wastewater, 6. Incineration

Abstract

The article contains sections titled: 1. Introduction 2. Legal Aspects 3. Distinctions with Respect to Other Processes, and Evaluation Criteria 3.1. Calorific Value 3.2. Wastewater Constituents 4. Incineration Plants 4.1. Combustion Chambers 4.2. Immersion Heating Chambers 4.3. Fluidized‐Bed Furnaces 4.4. Rotary Kilns 5. Emissions: Off‐Gases, Water, and Solid Waste

Strategies to Tackle the Waste Water from α-Tocopherol-Derived Surfactant Chemistry

“…Incineration of waste water needs fuel in the form of (waste) solvent or fuel oil to attain complete combustion of any water critical components. The typical CO 2 release from waste water incineration in a high-temperature furnace was estimated to be 0.63 kg/kg waste water, as a result of adding 0.2 kg fuel oil/kg waste water (zero calorific value of the waste water, air preheated to 300 °C [ e.g ., by waste heat utilization], no heat recovery by steam generation [potentially ∼50%]). , Although this CO 2 amount per kg waste water is lower compared to incineration of organic solvent waste (2.3 kg CO 2 /kg for a mixture of tetrahydrofuran (THF)/methanol/heptane 1:1:1 by mass), it is significant and a multiple of the CO 2 amount resulting from treatment of an aqueous layer in the WWTP, e.g ., 0.073 kg CO 2 /kg waste water in the case of a total organic carbon (TOC) content of 20 g/kg waste water (complete microbial oxidation assumed). It needs to be mentioned, though, that the TOC content of an aqueous layer may be significantly lower or higher than this, depending on the chemistry and the solubilities of the involved compounds.…”