Abstract
Continuous treating process by iron-carbon micro-electrolytic technology treating actual dyeing wastewater was studied, performance of the micro-electrolysis reactor (MER) assembled homemade iron-carbon micro-electrolysis materials (MEM) and the process of alkaline addition, the properties of iron mud (flocculation precipitation produced from alkaline addition) were also investigated. The results shows that:(1) COD removal rate of MER was stable at around 60%, and the chroma could reached less than 40 times at stable stage of 60 days operation; (2) According to 30 days of continuous operation test, 7.6 kg of iron mud was produced when one ton wastewater was treated in this system; it was also found that iron mud can be recycled as raw materials for the synthesis of MEM by EDS analysis; (3)Effluent reflux (reflux ratio 1~1.5) could effectively reduce the dosage of alkali in practical process.
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