求翻译：增项升级。暂定市政公用工程施工总总承包贰级。可承担城市通路工程；公共广场工程；2万吨日及以下给水厂；1万吨日及以下污水处理工程；1立方米秒以下给水、污水泵站；5立方米秒及以下雨水泵站；各类给排水管道工程；各类城市生活垃圾处理工程是什么意思？

Additional upgrades. Provisional municipal engineering General construction contract second grade. Affordable urban pathways project, public square project, 20,000 tons per day and the following water supply plant; 10,000 tons and below sewage treatment works; 1 cubic seconds the following water supply and sewage pumping station; storm water pumping station and below 5 cubic second; all kinds of water supply and drainage piping project; various types of municipal solid waste treatment project