碱渣、粉煤灰对吹填海泥的改性研究

采用室内模拟淋洗脱盐试验,研究利用碱渣、粉煤灰对吹填海泥的改性作用,选用脱盐速率、用水量、SAR、RSC、pH等指标筛选出具有较快的脱盐速率,较经济的脱盐淋洗用水量,达到脱盐标准时各盐渍性状满足植物生存要求,在脱盐过程中不存在碱化问题,含有的离子浓度对植物的生长不产生毒害作用的3种废弃物的最佳混合比例。试验结果表明,吹填海泥:碱渣:粉煤灰=4:3:3(体积比)的混合比例是配制绿化种植土的最佳配比。

Study on Alkali Dreg and Coal Ash Improvement for Dredged Sediment

The dredged sediment,coal ash and alkali dreg,which abound in TEDA(Tianjin Economy Technology Development Area),was utilized to mix the three solid wastes together to a new type of soil.The best mixing proportion has been choosed out by indoor washing desalination experiment.The best treatment has faster desalination speed,economic desalination water quota,when reached desalination standard,the salining properties was satisfy to plants surviving,it would not become alkali soil in the course of desalination,...