Effluent posttreated

Fuels that contain potentially harmful chemicals may produce effluents that contain hazardous materials. For example, fuels containing benzene could produce benzene in the exhaust under certain conditions. Since benzene is a hydrocarbon, it is generally easy to completely destroy if there is adequate oxygen, temperature, and mixing. Fuels containing chlorine or fluorine can produce dioxins and furans that are toxic. These are not as easy to eliminate from the exhaust, so some type of posttreatment system is often required to minimize these pollutants to acceptable levels. 

Mesophilic (35°C) digestion with recycling of aerobically posttreated digester effluent. 

Figure 4. Recycling system for aerobically-posttreated digester effluent...

Digestion With Product Qas and Posttreated Effluent Recycling... 

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