Glass fiber reinforced plastic heat preservation tank

The utility model relates to the field of sewage treatment equipment, in particular to a glass fiber reinforced plastic heat preservation tank which comprises a tank body and a plurality of reinforcing ribs arranged around the outer side of the tank body. The plurality of reinforcing ribs are uniformly arrayed outside the tank body; the tank body comprises a middle part and sealing head parts which are respectively arranged at two ends of the middle part; a first thermal insulation layer is wound on the inner side of the middle part; second heat preservation layers are wound on the inner sides of the end sockets at the two ends. And third thermal insulation layers are wound on the sides, deviating from the tank body, of the first thermal insulation layer and the second thermal insulation layer. The inner and outer container structure is formed through double-layer winding, so that on one hand, the strength of the tank body is ensured, the tank body is prevented from directly transferring heat to soil, the pro