环境科学与技术
環境科學與技術
배경과학여기술
ENVIRONMENTAL SCIENCE & TECHNOLOGY
2010年
1期
154-158
,共5页
陈忻%袁毅桦%潘坚定%孙恢礼
陳忻%袁毅樺%潘堅定%孫恢禮
진흔%원의화%반견정%손회례
羧甲基壳聚糖%印染污水%脱色%氨氮%絮凝
羧甲基殼聚糖%印染汙水%脫色%氨氮%絮凝
최갑기각취당%인염오수%탈색%안담%서응
carboxymethyl chitosan (NOCC)%dyeing wastewater%decolorization%ammonia nitrogen (NH_3-N)%flocculation
为提高印染污水处理效果,以羧甲基壳聚糖和硝酸镧为絮凝剂,研究了羧甲基壳聚糖和硝酸镧联合使用时羧甲基壳聚糖和硝酸镧的投加量、溶液pH、温度、沉淀时间对印染污水的脱色率、除浊率、氨氮去除率和COD去除率的影响.实验结果表明,当羧甲基壳聚糖浓度为400mg/L,稀土硝酸镧浓度为20mg/L,反应温度45℃,pH2.5,沉降时间为4h时对印染污水的脱色率和除浊率分别是95%、96.69%,COD的去除率80%,氨氮去除率70%;羧甲基壳聚糖与硝酸镧联合使用的絮凝效果优于单独使用羧甲基壳聚糖.
為提高印染汙水處理效果,以羧甲基殼聚糖和硝痠鑭為絮凝劑,研究瞭羧甲基殼聚糖和硝痠鑭聯閤使用時羧甲基殼聚糖和硝痠鑭的投加量、溶液pH、溫度、沉澱時間對印染汙水的脫色率、除濁率、氨氮去除率和COD去除率的影響.實驗結果錶明,噹羧甲基殼聚糖濃度為400mg/L,稀土硝痠鑭濃度為20mg/L,反應溫度45℃,pH2.5,沉降時間為4h時對印染汙水的脫色率和除濁率分彆是95%、96.69%,COD的去除率80%,氨氮去除率70%;羧甲基殼聚糖與硝痠鑭聯閤使用的絮凝效果優于單獨使用羧甲基殼聚糖.
위제고인염오수처리효과,이최갑기각취당화초산란위서응제,연구료최갑기각취당화초산란연합사용시최갑기각취당화초산란적투가량、용액pH、온도、침정시간대인염오수적탈색솔、제탁솔、안담거제솔화COD거제솔적영향.실험결과표명,당최갑기각취당농도위400mg/L,희토초산란농도위20mg/L,반응온도45℃,pH2.5,침강시간위4h시대인염오수적탈색솔화제탁솔분별시95%、96.69%,COD적거제솔80%,안담거제솔70%;최갑기각취당여초산란연합사용적서응효과우우단독사용최갑기각취당.
Carboxymethyl chitosan (NOCC) and carboxymethyl chitosan-lanthanum nitrate (La(NO_3)_3) composite were used to deal with dyeing wastewater by flocculation. The effect of five factors including dosage of NOCC, dosage of La(NO_3)_3, pH value, temperature and settling time on decolorization rate, removal rate of turbidity, NH_3-N and COD of dyeing wastewater was investigated. Results showed that decolorization rate and turbidity removal rate of wastewater, NH_3-N removal rate and COD removal rate could be achieved above 95%, 96.69%, 80% and 70% respectively. Flocculation of composite coagulant is superior to that of single usage of NOCC or NOCC-La(NO_3)_3 composite.
