聚镁硅酸硫酸铁混凝处理黄河水的研究

Coagulation Treatment of Yellow River Water by Poly Magnesium Silicate Ferric Sulfate

试验合成了一种新型无机高效复合絮凝剂——聚镁硅酸硫酸铁(PMSFS),并用于混凝处理黄河水.结果表明:PMSFS投加量为30 mg/L时,絮凝沉降30 min后,水样上清液浊度1.88 FTU、COD_(Mn)2.06 mg/L、UV_(254)0.120 cm^(-1)、NH_3-N 0.155 mg/L.与聚合氯化铝(PAC)相比,药剂用量少、絮体沉降快,对水样浊度、COD_(Mn)、UV_(254)、NH_3-N去除率高,可显著提高对黄河水的混凝处理效果,避免残余铝对水体的危害.

Poly magnesium silicate ferric sulfate（PMSFS）was synthesized which used for coagulation purification of the Yellow River water. The results showed that when the dosage of the PMSFS was 30 mg/L and the settling time was 30 min in the test,the supernatant turbidity was 1.88 FTU,CODMn was 2.06 mg/L,UV254 was 0.120 cm^-1 and the NH3-N was 0.155 mg/L. Compared with Poly Aluminium Chloride（PAC）,less reagent dosage was used and the rate of settlement was higher. Meanwhile,the water turbidity,CODMn,UV254 and NH3-N removal rate were higher,and it was effective for treatment of coagulating the Yellow River water,and could avoid the water secondary pollution which was caused by residual aluminum.