CAJ | 학술논문

以石油污染土壤淋洗修复产生的含油废水为研究对象,采用复配絮凝剂-超滤膜组合工艺处理含油废水.考察了絮凝剂的配比、加入量、pH、搅拌速度和搅拌时间以及超滤膜的进料流量和压力等因素对废水处理效果的影响.实验结果表明,废水处理的最佳工艺条件:复配絮凝剂由质量分数5%的PFS和质量分数5%的PAC组成,投加量分别为30、10 mL/L,助凝剂为质量分数0.05%的PAM,投加量为1 mL/L,搅拌速度为120 r/min,搅拌时间为9 min;进料流量为50 L/h、压力控制在0.5 MPa.最佳条件下,最终出水含油质量浓度<0.14 mg/L、COD_(Cr)<41 mg/L、SS<1 mg/L,均达到了<污水综合排放标准>(GB 8978-1996)中的一级排放标准和回注水标准.
이석유오염토양림세수복산생적함유폐수위연구대상,채용복배서응제-초려막조합공예처리함유폐수.고찰료서응제적배비、가입량、pH、교반속도화교반시간이급초려막적진료류량화압력등인소대폐수처리효과적영향.실험결과표명,폐수처리적최가공예조건:복배서응제유질량분수5%적PFS화질량분수5%적PAC조성,투가량분별위30、10 mL/L,조응제위질량분수0.05%적PAM,투가량위1 mL/L,교반속도위120 r/min,교반시간위9 min;진료류량위50 L/h、압력공제재0.5 MPa.최가조건하,최종출수함유질량농도<0.14 mg/L、COD_(Cr)<41 mg/L、SS<1 mg/L,균체도료<오수종합배방표준>(GB 8978-1996)중적일급배방표준화회주수표준.
The oil-bearing wastewater produced from the washing of oil-contaminated soil has been studied. The combined flocculant-ultrafihration membrane process is used for treating oil-bearing wastewater. The effects of the flocculant ratio, dosage, pH, stirring intensity and time, the feed flow of ultrafiltration and pressure, etc. on the wastewater treatment efficiency are investigated. The results show that the optimum technological conditions are as follows : the composite flocculant consists of mass fraction 5% of PFS, and mass fraction 5% of PAC. Their dosage are 30 mL/L and 10 mL/L respectively. The mass fraction of coagulanting agent PAM is 0.05%, its dosage is 1 mL/L. The intensity and time of stirring as 120 r/min and 9 min respectively, the feed flow as 50 L/h and the pressure as 0.5 MPa. Under these conditions, the ultimate oil content of oil, COD_(Cr) and SS are less than 0.14, 41 mg/L and 1 mg/L respectively. All these indicators reach the first-class discharge standard and reuse water standard of the Compre-hensive Wastewater Discharge Standard (GB 8978-1996).