NOVELTY - Sewage treatment device without odor comprises a water inlet (1) at the front end and the tail end is provided with a water outlet (2) and a sludge outlet (10). The device is divided into five regions, which are a pre-treatment region, a strain activation enrichment region, a biological treatment region, a sediment region and a sludge storage region arranged in order. The pre-treatment region, the biological treatment region and the sediment region are orderly connected. The sewage orderly flows through the three treatment regions and separates the solid and the liquid in the sediment region.    USE - Used as sewage treatment device.    ADVANTAGE - The device: improves the removing capacity of biological oxygen demand, chemical oxygen demand, ammonia nitrogen, total phosphorus and total nitrogen in the sewage by 8-30% in comparison with the conventional activated sludge method; stabilizes residual sludge by the microorganism; improves the sludge settling and dewatering capacity of the sludge; reduces the yield of the sludge; enables humidification of the residual sludge by the microorganism; renders a dewatered sludge, which has no odor and hence is directly used or mixed with livestock waste, or taken as a fertilizer and used for farmland; produces no odor during the whole sewage treatment.    DETAILED DESCRIPTION - Sewage treatment device without odor comprises a water inlet (1) at the front end and the tail end is provided with a water outlet (2) and a sludge outlet (10). The device is divided into five regions, which are a pre-treatment region, a strain activation enrichment region, a biological treatment region, a sediment region and a sludge storage region arranged in order. The pre-treatment region, the biological treatment region and the sediment region are orderly connected. The sewage orderly flows through the three treatment regions and separates the solid and the liquid in the sediment region and the supernatant is discharged. A part of return sludge in the sediment region flows into the strain activation enrichment region to activate, culture and enrich the strain via a return sludge conveying pipe, and the cultured sludge respectively flows into the water inlet pipe on the front end of the device, the biological treatment region and the sludge storage region by culture sludge conveying pipes.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of the sewage treatment device.    Water inlet (1)    Water outlet (2)    Sludge outlet (10)