城市污泥发酵物在堤坝护坡植被恢复工程中的应用

Application of composted urban sewage sludge to dam slope vegetation restoration

为了探索城市污泥是否可作为堤坝护坡绿化基质,以拓展城市污泥资源化利用的途径,将好氧发酵处理后的城市污泥作为有机基质,在堤坝护坡的植被恢复工程中进行资源化利用。结果显示,以污泥发酵物为主要成分的有机基质有效提高了堤坝护坡植物高羊茅的单株鲜质量、分蘖数,同时对工程基质的酸碱度有缓和作用,并显著提高了保水性,表明城市污泥发酵物是一种可应用于水工护坡植被恢复的优良添加基质。

In order to study whether urban sewage sludge can be utilized as dam slope substrate and enhance the utilization of sewage sludge resources, aerobic composted sewage sludge was applied to dam slope vegetation restoration. The results show that organic additive based on the composted sewage sludge effectively increased the fresh weight and tiller number of tall rescue （Festuca arundinacea Schreb. ）. Meanwhile, it buffered the pH value in slope substrate soil and notably elevated the water binding capacity. These facts suggest that sewage sludge is qualified to be a good additive for dam slope vegetable restoration.