Hoisting of sewage treatment tanks: put each sewage treatment tank into the foundation pit in turn, control the horizontal position of each base, strictly control the verticality of the whole tank and adjust it in time.
Joint treatment: polymer waterproof cement mortar is poured into the groove of the joint, and the surface is coated with polymer waterproof cement mortar.
Pipeline installation: the joint between pipeline and tank body is sealed with rubber sealing ring, and both sides are filled with slightly expansive waterproof cement mortar.
Packaging (septic tanks are not provided): sewage treatment packaging is added to the packaging area.
Sealing and backfilling: the top cover of the sewage treatment tank is hoisted to the tank body and fixed.
Extended data:
The common sewage treatment devices (septic tanks) mostly use cast-in-place reinforced concrete, bricks or glass fiber reinforced plastic, among which the sewage treatment devices (septic tanks) with cast-in-place reinforced concrete and bricks have long construction period, large area and high comprehensive cost. Although FRP overcomes the above problems, it brings a new problem of insufficient compressive strength.
Precast concrete sewage treatment device effectively solves all the above technical defects, which is not only short in construction period, low in overall cost, land saving, flexible in layout and combination, high in compressive strength, non-leakage and long in service life, but also an upgraded product of cast-in-place reinforced concrete, brick structure and glass fiber reinforced plastic materials.
Baidu encyclopedia-precast concrete septic tank