Using microwave technology enhanced flocculation treatment of oilfield wastewater containing polymer. Chose the wastewater COD removal efficiency as an evaluation index, investigated four kinds of flocculants, such as AlCl_3, FeCl_3, PAC, PAF in the microwave irradiation and no microwave irradiation two types of test flocculation conditions, and offered to fly ash as adsorbent adsorption-microwave flocculation combined process to enhance wastewater treatment effect, with no secondary pollution can be achieved by waste. The experimental results show the effect of microwave has a significant promote to ferric flocculants' flocculation process, and fly ash adsorption-microwave process is better than simple microwave flocculation process, in the solid-liquid ratio of 1: 100, stirring speed 200 r·min~(-1), the adsorption time 30min, microwave flocculation time 90s, the conditions under microwave irradiation power of 400W, COD removal rate can be increased by 25%.
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