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实验通过投加助凝剂以强化混凝沉淀过程,从而达到去除再生水景观水中的藻类。以PAC为混凝剂,高锰酸盐复合药剂(PPC)为预氧化助凝剂,通过烧杯实验确定PPC、PAC同时投加,最佳投量分别为1 mg/L、60 mg/L。生产性实验中,机械加速澄清池强化混凝对TP、叶绿素、藻密度的去除率分别为54%、32.3%和35.4%,湖水中TP、TN逐渐降低分别由4.9 mg/L、23 mg/L降至0.72 mg/L、10.3 mg/L。PPC提高了混凝沉淀对藻类的去除效果,改善了再生水景观湖水质,降低水中氮磷营养盐的含量。
Experiments by adding coagulant to strengthen the coagulation and sedimentation process, so as to remove the reclaimed water landscape of algae. PAC as coagulant and permanganate composite (PPC) as pre-oxidative coagulant, PPC and PAC were determined by beaker experiment. The optimum dosage was 1 mg / L and 60 mg / L, respectively. In productive experiments, the removal rates of TP, chlorophyll and algae in the mechanical accelerated clarification tank were 54%, 32.3% and 35.4% respectively. The TP and TN in the lake decreased gradually from 4.9 mg / L and 23 mg / L to 0.72 mg / L, 10.3 mg / L. PPC improves the removal of algae by coagulation and sedimentation, improves the water quality of reclaimed water landscape and reduces the content of nitrogen and phosphorus nutrients in water.