一种镉废水的处理方法

本发明公开了一种镉废水的处理方法，属于含镉废水处理技术领域。所述方法包括：将镉废水处理渣滓并去除水中的COD、BOD、BOD5、SS和各种形式的氮磷后调节pH值至5-7；按2-10kg/m3添加量在镉废水中添加双DTC改性壳聚糖；滤除吸附镉后的双DTC改性壳聚糖。本发明通过双DTC改性壳聚糖，使得能够对镉浓度800mg/L以上的废水进行处理，且除镉效果较好，还通过蕈菌基活性炭吸附剂协同除镉，之后再加入喜钙念珠藻生物膜反应器进行反应，使得镉去除率达到99.99％以上，解决了对高浓度镉废水的处理问题。并且双DTC改性壳聚糖和蕈菌基活性炭吸附剂均具有很好的重复利用性能，稳定性好，可重复利用率高。 T...

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Bibliographic Details
Format Patent
LanguageChinese
Published 15.03.2022
Subjects
CHEMISTRY
METALLURGY
TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Summary:本发明公开了一种镉废水的处理方法，属于含镉废水处理技术领域。所述方法包括：将镉废水处理渣滓并去除水中的COD、BOD、BOD5、SS和各种形式的氮磷后调节pH值至5-7；按2-10kg/m3添加量在镉废水中添加双DTC改性壳聚糖；滤除吸附镉后的双DTC改性壳聚糖。本发明通过双DTC改性壳聚糖，使得能够对镉浓度800mg/L以上的废水进行处理，且除镉效果较好，还通过蕈菌基活性炭吸附剂协同除镉，之后再加入喜钙念珠藻生物膜反应器进行反应，使得镉去除率达到99.99％以上，解决了对高浓度镉废水的处理问题。并且双DTC改性壳聚糖和蕈菌基活性炭吸附剂均具有很好的重复利用性能，稳定性好，可重复利用率高。 The invention discloses a cadmium wastewater treatment method and belongs to the technical field of cadmium-containing wastewater treatment. The method comprises the following steps: treating dross incadmium wastewater, removing COD (Chemical Oxygen Demand), BOD (Biochemical Oxygen Demand), BOD5, SS and nitrogen and phosphorus of various forms in the water, and regulating the pH value to be 5-7;adding dual DTC modified chitosan into the cadmium wastewater according to an addition amount of 2-10kg/m ; filtering the dual DTC modified chitosan in which the cadmium is adsorbed. According to the method disclosed by the invention, due to the dual DTC modified chitosan, the wastewater having the cadmium concentration of 80
Bibliography:Application Number: CN201810967217