Method and apparatus for treating organic waste water
a technology of organic waste water and apparatus, which is applied in the direction of biological sludge treatment, biological water/sewage treatment, sustainable biological treatment, etc., can solve the problems of large site area, large labor and time and expense, and interfere with solid-liquid separation, etc., to achieve efficient oxidative decomposition, high temperature, and the effect of improving the quality of li
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example 1
(1) Example 1
55. FIG. 1 is a structural diagram schematically showing an apparatus for treating an organic waste water which is suitable for executing a method of the present invention for treating an organic waste water.
56. As shown in FIG. 1, original waste water A stored in organic waste water reservoir I is introduced into a biological treatment tank 3 through a route 2. The original waste water A, which is organic waste water, is subjected to an aerobic biological treatment in biological treatment tank 3. The aerobic biological treatment represents that an organic matter is decomposed into an inorganic matter, such as carbon dioxide or water, by biological oxidation. An aerobic microorganism used is gram-negative or gram-positive bacillus, for example, the Pseudomonas species and the Bacillus species, which have been used in an activated sludge method for sewage treatment. These inoculation bacteria are obtained from a usual sewage treatment plant. In this case, an operation is...
example 2
(2) Example 2
62. FIG. 2 is a structural diagram schematically showing an apparatus for treating an organic waste water, which is suitable for executing a method of treating an organic waste water according to another embodiment of the present invention. The apparatus shown in FIG. 2 is different from the apparatus shown in FIG. 1 in that route 6 is not provided, all sludge separated in precipitation tank 5 is introduced into concentration tank 8, a part of the sludge concentrated to have a water content of 99% or less (a sludge concentration of 1% or more) in concentration tank 8 is introduced into biological treatment tank 3 through route 12, a residual sludge is introduced into solubilizing tank 10 and solubilized by thermophilic bacteria, the solubilized solution is introduced into biological treatment tank 3 through route 11, and an aerobic biological treatment of the concentrated sludge and the solubilized solution is performed in biological treatment tank 3. Subsequently, the ...
example 3
Change in Enzyme Production by Microorganism Corresponding to a Residence Time
71. A yeast-peptone medium, manufactured by DIFCO Co., Ltd., (4 g of yeast extract, 8 g of peptone and 1 liter of water, pH 6.8) was put into a reactor made of glass, and bacillus stearothermophilus SPT 2-1 [FERM P-15395], which was derived from an excess sludge of a sewage treatment plant and preincubated, was raised and concussively incubated at a temperature of 65.degree. C. First, an HRT was set to 36 hours while an incubation solution is continuously supplied. In order to shorten the HRT to a predetermined time, while the quantity of organic matter to be introduced is kept constant, an appropriate quantity of dilution water was added for incubation. A supernatant solution was sampled at each residence time, and each protease activity was measured as follows. More specifically, an equivalent sample was added to 0.7 ml of a solution (5 mg / ml) obtained by suspending azocoal (trade name, manufactured by S...
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