巨紫根水葫芦在不同污染程度水体中的净化效果  

Purification effect of water hyacinth with giant purple roots in wastewater with different concentrations

作　　者：段金程[1,2] 张毅敏[1] 晁建颖[1] 杨阳[1,2] 周创[1,2] 

机构地区：[1]环境保护部南京环境科学研究所,江苏南京210042 [2]常州大学环境与安全工程学院,江苏常州213164

出　　处：《水资源保护》2013年第3期73-78,共6页Water Resources Protection

基　　金：国家水体污染控制与治理科技重大专项(2008ZX07101-007)

摘　　要：通过实验室中试和野外现场工程试验比较,研究巨紫根水葫芦在低、中、高浓度污水和自然水体中对氮、磷和藻类的净化效果和抑制情况。结果发现:①巨紫根水葫芦分蘖速度慢,不会疯长,但有比较严重的根系脱落问题。②中试时,在6 d试验时间内巨紫根水葫芦可使试验中的高、中、低浓度组的NH3-N质量浓度分别由4.58 mg/L、2.61 mg/L、1.45 mg/L均降至0.10 mg/L以下;试验结束时(21d),中、低浓度试验组中TP的质量浓度由0.65mg/L和0.21mg/L分别降至(0.16±0.08)mg/L和(0.11±0.06)mg/L,但试验组中TN浓度仍为劣Ⅴ类水质。③野外现场工程中,巨紫根水葫芦仅对TP去除作用明显,野外试验区内、外的TP质量浓度分别为0.13～0.31mg/L和0.15～1.31 mg/L。④考虑到运输、人工等成本因素,巨紫根水葫芦在水体中的停留时间控制在1个月内为宜。Pilot experiments and on-site field projects were conducted to study the effects of water hyacinths with giant purple roots on purification of nitrogen and phosphorus, and the inhibition of algae in sewage with low, medium, and high concentrations and in natural water bodies. The results show the following ： （ 1 ） The tillering of water hyacinths with giant purple roots was slow and not soaring, but the roots would fall off, which was a more serious problem. （2） In pilot experiments, after about six days, the NH3-N concentration in the experimental groups with high, medium, and low concentrations decreased from 4.58 rag/L, 2. 61 mg/L, and 1.45 mg/L, respectively, to less than 0. l0 mg/L for all groups; at the end of the experiment （on the 21st day）, the TP concentration in the experimental groups with medium and low concentrations decreased from 0. 65 mg/L and 0. 21 mg/L to （0. 16± 0. 08） mg/L and （0. 11 ± 0. 06） rag/L, respectively, but the TN concentration in the experimental groups was still at the inferior grade V level. （3） In field projects, a water hyacinth with giant purple roots had a significant effect only on the removal of TP, and the TP concentration was 0. 13 to 0. 31 mg/L and 0. 15 to 1.31 mg/L, respectively, inside and outside of the engineering site during the test period. （4） In consideration of transportation, labor, and other cost factors, it is suggested that the residence time of water hyacinths with giant purple roots in the water be less than one month.

关 键 词：巨紫根水葫芦 氮磷去除 叶绿素A 水体净化 

分 类 号：X824[环境科学与工程—环境工程]