NOVELTY - Device for reinforcing low temperature biological nitrification effect comprises sequencing batch reactor (SBR) denitrification reactor (4), sludge tank (23), sludge reinforced liquid crystal box, municipal sewage tank (3), carbon source box (13), temperature sensor (16), pH sensor (17), dissolved oxygen (DO) sensor (18) and programmable process controller (32).    USE - For reinforcing low temperature biological nitrification effect (claimed).    ADVANTAGE - The device processes sludge digestive juice with enhanced low temperature biological nitrification effect combined with the design of the SBR denitrification reactor which is provided with good low temperature nitration effect, short reaction time, good aeration energy consumption, flexible operation and management, thus stable quality.    DETAILED DESCRIPTION - Device for reinforcing low temperature biological nitrification effect comprises sequencing batch reactor (SBR) denitrification reactor (4) which is connected with urban sewage pipe, drain pipe, aeration pipe, carbon source, and rest sludge discharge pipe, return pipe, temperature sensor (16), pH sensor (17), dissolved oxygen (DO) sensor (18), temperature sensing probe which is provided with a sludge reflux pump, municipal sewage tank (3) which is connected to the SBR denitrification reactor passes through urban sewage pipe for adding carbon source box (13) connected to the SBR denitrification reactor external carbon source tube, air compressor is connected to the SBR denitrification reactor through aeration pipe, where the water pipe is connected to the SBR denitrification reactor passes through drain pipe, stirrer, temperature sensor, pH sensor, DO sensor, aeration sand head, the SBR denitrification reactor, sludge tank (23) are respectively reinforced by the rest sludge discharge pipe, return pipe is connected with the rest sludge discharge pipe to SBR denitrification reactor, sludge strengthening pool, return pipe, sludge digestion liquid water inlet pipe, gas inlet pipe, sludge digestion liquid water inlet pipe is set on the sludge digesting liquid water inlet pump, the air inlet pipe is provided with an air inlet valve, sludge digestive liquid inlet valve of water tank through the sludge digesting liquid connected to the sludge strengthening pool, sludge strengthening aeration tank is provided with a temperature sensing probe, a heating rod, return pipe is provided with the water pump, water outlet pipe is provided with a water outlet valve, air pipe is provided with air valve, is provided with external carbon source dosing pump tube, the rest sludge discharge pipe is provided with a mud discharging valve, the urban sewage pipe, a heating rod connected with programmable process controller (32) is connected with the programmable process controller, relay is set with a blending, adding relay, aeration relay, a relay, a temperature sensor, a pH sensor interface, sensor interface, a drainage relay, sludge reflux relay, relay discharge, a connector, a heating rod relay, a sludge digestion liquid feeding relay, a relay, an air intake air compressor relay, a programmable process controller is connected with stirrer, a dosing pump, air valve, a water inlet pump, a water outlet valve, a sludge reflux pump, a mud discharging valve, a sludge digestion liquid water inlet pump, an air inlet valve, an air compressor.    DESCRIPTION OF DRAWING(S) - The figure shows schematic diagram of device for reinforcing low temperature biological nitrification effect.    Municipal sewage tank (3)    Sequencing batch reactor denitrification reactor (4)    Carbon source box (13)    Temperature sensor (16)    pH sensor (17)    Dissolved oxygen sensor (18)    Sludge tank (23)    Programmable process controller (32)