Assembling modular domestic wastewater treating plant case body

The utility model discloses an assembling module type domestic sewage processing device comprising a box body which mainly comprises a bottom board (1), a standard punching module (2) and section steel (3), wherein a plurality of vertical section steel is uniformly arranged on the periphery of the bottom board, a plurality of horizontal section steel is welded between a plurality of the vertical section steel, thereby forming a gridding box body framework, standard punching modules are welded in each of grids, a water inlet pipe (4), a water outlet pipe (5) and a checking manhole (11) are arranged on the box body. The device adopts the modular punching and the welding combination technique to directly carry out the on-site assembling connection using a standard punching module and a section steel framework, which enables the whole device to be conveniently transported to construction site for the assembling welding, enables the on-site manufacture, installation and transportation of large-scale devices to be more flexibly and conveniently, thereby greatly improving the construction efficiency and reducing the construction period. The device has the characteristics that the resources of steel materials are saved, the cost is reduced, the size of the volume can be arbitrarily combined, the construction efficiency is improved, the structure is reasonable, the strength is high, the sealing is good, the processing efficiency is high, and the appearance is beautiful.