The use of glass steel septic tank of polymer material and high strength glass fiber composite made of whole cylinder type septic tank, compared with the traditional brick septic tank, with strict quality and no leakage, easy transportation, high compressive strength, acid and alkali with the advantages of long service life, quick installation etc.. The cylindrical septic tank effectively using large volume in the cylinder and ends with T shaped ribs at both ends of the wheel type external head, concave and convex design. This structure can improve the strength and water pressure of the tank body. The upper part of the tank body is provided with a water inlet and outlet and a cleaning hole, wherein, the membrane compartment is divided into three parts: a primary sedimentation tank, a secondary sedimentation tank and a processing pool. Bulkhead is arranged on the box filler filler filler for sewage treatment, with elastic vinylon tow. Conghua tank water inlet at the upper part of sewage into the primary sedimentation pool, than the major part of the sink to the bottom of manure treatment, the proportion of small part of floating on the water surface layer, from the cleaning hole remove upper sewage through the stuffing box is installed on the side of the sewage channel bulkhead ring flow into the stuffing box, and suspension contact type water treatment filler microbial enrichment, organic matter degradation in water. Due to the DC circulation of flashing flashing fecal sewage in the pool body principle, increase the retention time, the degradation time longer contact sewage and packing, organic matter degradation degree is higher, so that the BOD index in the discharge of sewage is reduced largely. The principle of glass tempering technology working tank