工业水处理
工業水處理
공업수처리
INDUSTRIAL WATER TREATMENT
2014年
10期
52-55
,共4页
含锌硫酸废水%聚硅酸铁锌絮凝剂%含肼废水
含鋅硫痠廢水%聚硅痠鐵鋅絮凝劑%含肼廢水
함자류산폐수%취규산철자서응제%함정폐수
sulfuric acid wastewater containing Zn2+%poly-silicate-ferric-zinc flocculant%hydrazine-containing wastewater
以含锌硫酸废水、铁屑、硅酸钠为原料制备聚硅酸铁锌絮凝剂。对制备条件的优化结果表明，当SiO2质量分数为0.020～0.025，n（Fe+Zn）/n（Si）为1.5～2.0，硅酸活化的pH为1.56～2.12，活化时间为12～16 h时，制备的聚硅酸铁锌絮凝剂的絮凝性能优良。用制备的聚硅酸铁锌絮凝剂二段处理含肼废水，结果表明，经该絮凝剂处理后，废水COD从7065 mg/L降低到1235 mg/L，COD去除率达到了82.5%，pH从13～14降低到9～10，降低了含肼废水后续生物处理的负荷和冲击。
以含鋅硫痠廢水、鐵屑、硅痠鈉為原料製備聚硅痠鐵鋅絮凝劑。對製備條件的優化結果錶明，噹SiO2質量分數為0.020～0.025，n（Fe+Zn）/n（Si）為1.5～2.0，硅痠活化的pH為1.56～2.12，活化時間為12～16 h時，製備的聚硅痠鐵鋅絮凝劑的絮凝性能優良。用製備的聚硅痠鐵鋅絮凝劑二段處理含肼廢水，結果錶明，經該絮凝劑處理後，廢水COD從7065 mg/L降低到1235 mg/L，COD去除率達到瞭82.5%，pH從13～14降低到9～10，降低瞭含肼廢水後續生物處理的負荷和遲擊。
이함자류산폐수、철설、규산납위원료제비취규산철자서응제。대제비조건적우화결과표명，당SiO2질량분수위0.020～0.025，n（Fe+Zn）/n（Si）위1.5～2.0，규산활화적pH위1.56～2.12，활화시간위12～16 h시，제비적취규산철자서응제적서응성능우량。용제비적취규산철자서응제이단처리함정폐수，결과표명，경해서응제처리후，폐수COD종7065 mg/L강저도1235 mg/L，COD거제솔체도료82.5%，pH종13～14강저도9～10，강저료함정폐수후속생물처리적부하화충격。
Poly-silicate-ferric-zinc flocculant has been made from sulfuric acid wastewater containing Zn2+,iron scraps and sodium silicate. The results show that when the mass refraction of SiO2 is 0.020-0.025,n(Fe+Zn)/n(Si) is 1.5-2.0,silicic acid activated pH is1.56-2.12 and activation time is 12-16 h. The flocculation capacity of the pre-pared poly-silicate-ferric-zinc flocculant is excellent. The prepared poly-silicate-ferric-zinc flocculant has been used for two-stage treating the hydrazine-containing wastewater. The results show that after being treated by this floccu-lant,the wastewater COD can be decreased from 7 065 mg/L to 1 235 mg/L,COD removing rate reaches 82%,and pH is decreased from 13-14 to 9-10. The load and attack of subsequent biochemical treatment of wastewater con-taining hydrazine has been decreased.
