The invention discloses a
tunnel construction wastewater cyclic utilization apparatus, which comprises a water inlet
pipe, a main device, a digital display screen, an operation button, a control cabinet, an apparatus shell, a base, an omnidirectional wheel, a water outlet
pipe, and a
fixed frame. The main device comprises a driving mechanism, a
cam transmission mechanism, a chain wheel mechanism,a
sludge removing mechanism, a stay wire transmission mechanism, an
alum liquid feeding mechanism, a filter box, a
sludge discharge opening, a filter screen, a connection
water pipe, an oxidizing box,and a contact-oxidation column. The driving mechanism, the
cam transmission mechanism, the chain wheel mechanism, the
sludge removing mechanism, the stay wire transmission mechanism, and the
alum liquid feeding mechanism are arranged in the main device of the apparatus; sludge on the filter screen can be automatically and periodically cleaned; the filter screen does not need to be replaced manually, and the cyclic
wastewater filtering efficiency is improved therefore.