景观旅游区公厕污水处理的A/O/N工艺研究

Study of the A/O/N Process Toward the Disposal for Sewage from Public Conveniences in Landscape Areas

以C/N比值较低的景观旅游区公厕化粪池排水为研究对象,在试验基础上将传统的A/O型生物脱N工艺改良为A/O/N型.结果表明:A/O/N型工艺系统可显著提高好氧反应器的硝化过程效率,有利于提高系统的脱N率.结合工艺条件和试验数据对A/O/N型工艺系统的脱N机理进行了较详细的分析.

How to make non-destructive testing on concrete structure containing rebar is the prevalent problem in civil engineering field, which is regarded as the difficulty to ensure the safety and durability of large concrete construction. In order to get a better non-destructive estimating, Radar and ultrasonic tomographic techniques are utilized to test concrete. The images are analyzed respectively and the comparison result shows that radar is good for detecting rebar in concrete while ultrasound CT technology is suitable for hollow inspecting. Because of clarity character of images, the imaging techniques are applied to concrete nondistructive testing.