净水箱护岸设计及试验研究

本文将生物-生态水体修复技术引入护岸结构，设计了净水箱护岸结构，该结构充分利用了河道排污管所在岸坡具有一定坡度和落差的特点，只需对原有小而分散的沿河排污管道进行简单改造，将污水布入净水箱护岸结构即可。现场试验表明，尽管累计水力停留时间仅为2h，但系统对初期径流污水中的监测污染物去除率都在40％以上；截留后的雨水仅在净水箱中停留5d，相对进水浓度而言的监测污染物累计去除率都在75％以上。该结构净化污水效果好，整洁美观，运行成本低，维护简单，不占用土地，在我国有较高的推广应用价值。

Research on design and test of water purifying box revetment

The paper presents a structure of water purifying box in which the bio-ecology rehabilitation technology is adopted in urban fiver revetment. By making best use of bank slope and its fall where polluted water pipes are laid, a simple modification is carried out by loading polluted water into the water purifying box revetment. A series of on-site tests were conducted and the results show that the removal ratio of the pollutants from the device is over 40% with its hydraulic retention time of 2h. After 5d of water retaining in the box, the cumulated pollutant removal ratio would be higher than 75 %. With the advantages of excellent water purifying performance, good landscape effect, low running cost, simple maintenance and no land occupation, this structure will be widely applied in China.