天津地区工程废弃泥浆物理压滤处置技术研究

Research on physical pressure filtration treatment technology for waste mud in Tianjin

摘要:

在天津地区，工程废弃泥浆处置方式简单，污染环境严重，已成为工程项目亟待解决的难点问题。以某桩基施工现场为试验场地，采用小型压滤实验机对现场废浆进行物理压滤就地处置试验，选取28~30 L/（m²·s）的1型滤布，60 min压滤时间为单机一次的最佳处理时间，实现了废弃泥浆现场固液分离目的。通过施工设备实际运行，通过添加少量石灰方式可将单次压滤时间降低至45 min。该现场压滤处置技术方法，有效地解决了现场泥浆外排的难题，达到资源节约和环境保护的目的。

Abstract:

In Tianjin， construction waste mud is disposed in a simple way with serious environment pollution； thus， posing a construction difficulty which needs to be solved urgently. Taking a pile foundation construction site as the test site， the physical pressure filtration treatment test of waste slurry on site was carried out by using a small filter press， where the Type 1 press cloth of 28~30L/（m²·s） was selected with 60min as the optimal treatment time for a single press to achieve solid-liquid separation of waste mud on site. In actual operation of the construction equipment， the single pressure filtration time can be reduced to 45min by adding a small amount of lime. The on-site pressure filtration method solves the problem of on-site mud discharge effectively， and achieves the purpose of resource saving and environmental protection.