生石灰和锁磷剂对河流低含量TP去除性能研究
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摘要
比较了生石灰和锁磷剂对河流低含量TP的去除性能。结果表明,当投加质量浓度为0～15 mg/L时,生石灰和锁磷剂对TP均无明显去除效果,但生石灰可使系统pH升高,而锁磷剂对系统pH无影响。当两者投加质量浓度为20～200 mg/L时,锁磷剂系统内pH由8.5降至7.5,对TP去除率28.85%～92.31%,有效利用率2.4～9 mg/g;投加质量浓度在80～200 mg/L时去除率可达80%以上,出水TP质量浓度低于0.1 mg/L,生石灰系统内pH由8.5升至10以上,对TP去除率为16.67%～72.22%,有效利用率为1.9～4.38 mg/g;当投加质量浓度在180 mg/L左右时,去除率达最大,出水TP浓度为0.16 mg/L。锁磷剂的综合除磷性能更有优势,其对TP、溶解性磷酸盐都有持久去除作用,最终确定锁磷剂优化投加质量浓度为60 mg/L。
The removal performance of low content TP in river by quicklime and phoslock were compared. The results showed that when adding mass concentration was 0～15 mg/L, quicklime and phoslock both had no removal efficiency on TP, but quicklime could increase pH of the system, and the phoslock had no effect on the system. When the both adding mass concentration was 20～200 mg/L, the p H in the phoslock system was reduced from 8.5 ～7.5, and the removal rate of TP was 28.85%～92.31%, and the effective utilization rate was 2.4～9 mg/g. when the adding mass concentration of phoslock was at 80～200 mg/L, the removal rate was more than 80%, and the effluent mass concentration of TP was below 0.1 mg/L. while the p H in the quicklime system increased from 8.5 to more than 10, and the removal rate of TP was 16.67%～72.22%, and the effective utilization rate was 1.9～4.38 mg/g. When the mass concentration of quicklime was about 180 mg/L, the removal rate was maximum, and the effluent mass concentration of TP was 0.16 mg/L. The comprehensive phosphorus removal capacity of phoslock was better, and it had a continuous removal effect on total phosphorus and soluble phosphate.Therefore, the optimum adding mass concentration of phoslock was 60 mg/L.
The removal performance of low content TP in river by quicklime and phoslock were compared. The results showed that when adding mass concentration was 0～15 mg/L, quicklime and phoslock both had no removal efficiency on TP, but quicklime could increase pH of the system, and the phoslock had no effect on the system. When the both adding mass concentration was 20～200 mg/L, the p H in the phoslock system was reduced from 8.5 ～7.5, and the removal rate of TP was 28.85%～92.31%, and the effective utilization rate was 2.4～9 mg/g. when the adding mass concentration of phoslock was at 80～200 mg/L, the removal rate was more than 80%, and the effluent mass concentration of TP was below 0.1 mg/L. while the p H in the quicklime system increased from 8.5 to more than 10, and the removal rate of TP was 16.67%～72.22%, and the effective utilization rate was 1.9～4.38 mg/g. When the mass concentration of quicklime was about 180 mg/L, the removal rate was maximum, and the effluent mass concentration of TP was 0.16 mg/L. The comprehensive phosphorus removal capacity of phoslock was better, and it had a continuous removal effect on total phosphorus and soluble phosphate.Therefore, the optimum adding mass concentration of phoslock was 60 mg/L.
引文
[1]曹井国,张蓁,姜亦增,等.锁磷剂与两种絮凝剂除磷性能的比较[C].海口:中国土木工程学会水工业分会排水委员会2010年年会,2010.
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[3]地表水环境质量标准:GB 3838-2002[S].
[4]水质总磷的测定钼酸铵分光光度法:GB 11893-89[S].
[5]曾雪梅.生石灰的除磷性能与除磷机理研究[J].西南师范大学学报(自然科学版),2014,39(7):163-168.
[6]张炳慧.天然水中磷酸盐存在状态与pH值的关系[J].地质实验室,1992(2):98-100.
[7]黎圣,钟山,刘静静.石灰法除磷的产物分析与p H条件选择机制[J].西安文理学院学报(自然科学版),2013,16(4):1-5.
[8]董婧蒙.传统钙法除磷的机理及改良[D].重庆:重庆大学,2009.
[9]余先旭,孙珮石,朱宝平,等.锁磷剂(Phoslock)对滇池水体的除磷试验研究[J].贵州环保科技,2006,12(1):6-9.
[10]丁文明,黄霞,张力平.水合氧化镧吸附除磷的试验研究[J].环境科学,2003,24(5):110-113.
[2]熊鸿斌,刘文清.钙法化学混凝处理高浓度含磷废水技术研究[J]水处理技术,2004,30(5):307-309.
[3]地表水环境质量标准:GB 3838-2002[S].
[4]水质总磷的测定钼酸铵分光光度法:GB 11893-89[S].
[5]曾雪梅.生石灰的除磷性能与除磷机理研究[J].西南师范大学学报(自然科学版),2014,39(7):163-168.
[6]张炳慧.天然水中磷酸盐存在状态与pH值的关系[J].地质实验室,1992(2):98-100.
[7]黎圣,钟山,刘静静.石灰法除磷的产物分析与p H条件选择机制[J].西安文理学院学报(自然科学版),2013,16(4):1-5.
[8]董婧蒙.传统钙法除磷的机理及改良[D].重庆:重庆大学,2009.
[9]余先旭,孙珮石,朱宝平,等.锁磷剂(Phoslock)对滇池水体的除磷试验研究[J].贵州环保科技,2006,12(1):6-9.
[10]丁文明,黄霞,张力平.水合氧化镧吸附除磷的试验研究[J].环境科学,2003,24(5):110-113.