NOVELTY - The deodorizing apparatus (1) comprises a native microorganism activating tank (2), a first deodorizing tank (3), a second deodorizing tank (4), where a microorganism activator filled with a colony of native microorganisms is placed in the native microorganism activating tank, a raw water inlet through which sludge enters the native microorganism activating tank, a first deodorizing tank inlet (11) through which the activated native microorganisms and the sludge enter the first deodorizing tank, a second deodorizing tank inlet.    USE - The deodorizing apparatus is useful for removing malodor generated from a primary sludge (raw sludge) or a secondary sludge (activated sludge) using native microorganisms such as Bacillus subtilis BSDL1 and Bacillus megaterium DSM3, where the primary sludge containing night soil is produced at the sewage treatment plant including a concentration tank, a concentrator and a sludge cake (all claimed).    ADVANTAGE - The deodorizing apparatus is capable of effectively, environmental friendly and economically removing the malodor of primary and secondary sludge generated from the sewage treatment plants using native microorganisms thus preventing hygiene issues.    DETAILED DESCRIPTION - The deodorizing apparatus (1) comprises a native microorganism activating tank (2), a first deodorizing tank (3), a second deodorizing tank (4), where a microorganism activator filled with a colony of native microorganisms is placed in the native microorganism activating tank, a raw water inlet through which sludge enters the native microorganism activating tank, a first deodorizing tank inlet (11) through which the activated native microorganisms and the sludge enter the first deodorizing tank, a second deodorizing tank inlet through which the activated native microorganisms and the sludge enter the second deodorizing tank, and a deodorizing tank outlet, which completely discharges the deodorized sludge from the second deodorizing tank. The sludge is flowed to the native microorganism activating tank. The colony of the native microorganisms in a spore state is germinated and activated through a proliferation process under conditions where oxygen and organic materials are supplied. The first deodorizing tank preliminarily removes malodorants from untreated matter that passed through the native microorganism activating tank under conditions where oxygen and the activated native microorganisms are continuously supplied. The second deodorizing tank completely removes malodorants from untreated matter that passed through the first deodorizing tank under conditions where oxygen and the activated native microorganisms are continuously supplied. The native microorganism activating tank, the first deodorizing tank and the second deodorizing tank are connected to a blower and to a diffuser through which oxygen is supplied. The inlets and outlets are designed to be arranged in a zigzag manner on each of the tanks based on a diagonal line. The colony of native microorganisms is prepared by culturing Bacillus subtilis BSDL1 and Bacillus megaterium DSM3 in a spore state, concentrating the culture broth and mixing the concentrated culture broth with inorganic materials and then molding the mixture, and comprises 5-6% of the concentrated culture broth of Bacillus subtilis BSDL1 and Bacillus megaterium DSM3 based on the weight of the inorganic materials. A dissolved oxygen (DO) level: in the native microorganism activating tank is 0.5-0.6 mg/l; in the first deodorizing tank is 0.4-0.5mg/l; and in the second deodorizing tank is 0.3-0.4 mg/l. The activated native microorganism (10-20%) in the treated matter whose reaction is terminated in the second deodorizing tank is returned through a return line to the native microorganism activating tank. The return rate of native microorganisms returning from the second deodorizing tank to the native microorganism activating tank is: 10-15%, where the sludge is a mixture of a primary sludge and a secondary sludge; and 20-25% where the sludge is a mixture of a primary sludge containing night soil and a secondary sludge. The retention time of the sludge fed into the deodorizing apparatus is: 5-6 hours, where the sludge is mixture of primary and secondary sludge; and 7-8 hours, where the sludge is mixture of primary sludge containing night soil and secondary sludge. A capacity ratio of the native microorganism activating tank, the first deodorizing tank, and the second deodorizing tank is 1:6:3, respectively.    DESCRIPTION OF DRAWING(S) - The figure shows a schematic view of a deodorizing apparatus.    Deodorizing apparatus (1)    Native microorganism activating tank (2)    First deodorizing tank (3)    Second deodorizing tank (4)    First deodorizing tank inlet. (11)