TW200806588A - Processing method and equipment of waste water containing insoluble materials - Google Patents

Abstract

To provide a processing method of organic waste water that is able to improve and suppress both phenomena of non-filamentous bulking and filamentous bulking, easily, without any additives, and in a short time. Activated sludge is mixed with the organic waste water containing insoluble materials, then dispersion treatment is applied to the waste water for distribute the insoluble materials and the activated sludge minutely in the waste water. Next, biological treatment is applied to the waste water.

Description

200806588 IX. Description of the Invention: [Technical Field of the Invention] The present invention relates to a method and apparatus for biologically treating wastewater containing insoluble matter. In particular, it relates in particular to a wastewater treatment, method and apparatus for suppressing two phenomena of nonlinear % expansion and linear expansion without using a chemical. [Prior Art] As a method of biologically treating waste water containing insoluble matter, a planktonic method and a biofilm method are generally used, and among them, an activated sludge method which is particularly one of the planktonic methods is generally known. There are various treatment methods for the activated sludge process, and Fig. 9 shows a representative treatment step in the activated sludge process. The waste water 24 containing the insoluble matter is introduced into the biological treatment step 26 through the inflow step 25, and separated into the supernatant liquid 28 and the sludge 29 by the treatment water from the step 27. The supernatant liquid 28 is sterilized and discharged after the elimination step (not shown), and the sludge 29 is concentrated and stored in a step _ a step (not shown), and then sent out to the outside of the treatment system with 3 minutes of excess sludge. The active 5 mud method is susceptible to changes in the type of the human waste water, the change in load, the change in water temperature, and the like, and the sedimentation separation property is likely to be deteriorated, that is, the so-called swelling phenomenon. This 16-bulging phenomenon usually involves nonlinear expansion and linear expansion: 'non-linear expansion is: grease adheres to the activated sludge block (1) 〇 c k ), causing a decrease in specific gravity; linear expansion occurs when linear bacteria preferentially occur. When linear expansion occurs in f, the sedimentation separation property is deteriorated, so that it is necessary to use a large/child descending accelerator, or it is necessary to increase the sedimentation separation tank, resulting in problems such as an increase in cost and difficulty in operation of the wastewater treatment facility. 312ΧΡ/^^^^·(ΜίΦ)/96-09/96119296 5 200806588 This patent document 1 is a method in which the waste water of insoluble matter/the lingering substance is oil and fat, and the insoluble matter of oil and fat is supplemented. # # Μ仏# 疋 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 乂 生物 生物 生物On the other hand, regarding the method of improving the linear expansion, the liquid in the tank is added as a method of setting the aeration in the aeration tank to the aeration tank, and at the same time, through the above-mentioned pump: Literature 2). Expansion: = = _ expansion or the linear high-speed production of the mixed water as described in Patent Document 2, and the inflow of the sinking sludge in the tank to carry out the mechanical stirring of the intermediation speed, here by the dispersion treatment μ A method of dispersing the sludge to flow to the front stage reaction (refer to Patent Document 3). Japanese Patent Laid-Open Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. The problem to be solved by the invention. However, in the method of Patent Document 1, only the air can be mixed and agitated, so that the degree of dispersion of the oil and fat in the waste water is lowered, and it is hardly emulsified, and there is a possibility that the oil in the waste water cannot be treated by biodegradation. Problem Y and 'more can not achieve the purpose of improving linear expansion. 312XP / invention manual (supplement) / 96-09/96119296 6 200806588 Another way to improve the linear expansion of the swelling inhibitor is to recover In the normal operation state, it takes about two weeks, and substantial wastewater treatment cannot be performed during this period. Further, in the method of Patent Document 2, since the ejector is installed in the aeration tank, the method is the same as that of the air diffusion pipe method. There is a danger of clogging of the ejector, and in addition, depending on the set water depth of the ejector, it may not absorb air. In this case, it is necessary to pass through a blower, etc. As a result of the pressurization, the air or oxygen for aeration is sent through a blower or the like, thereby increasing the cost of the period and the running cost. In addition, even if the linear expansion is improved, the nonlinear expansion is improved. In the method of Patent Document 3, the dispersion treatment for reducing the diameter of the sludge is performed, but the refining treatment of the wastewater containing the insoluble matter cannot be performed. Therefore, the oil and fat in the wastewater containing the insoluble matter adheres to the small = cut mud or organism. On the surface of the film, the secondary secret of oxygen, the substrate, and the nutrient source f is deteriorated, and there is a new problem that the organic matter other than the oil and fat cannot be sufficiently treated. Strange the above problems of the prior art, the object of the present invention is to provide a method and The treatment device's not only promotes the biological treatment of insoluble wastewater, but also does not need to add a chemical agent, and can easily change the grain in a short time, and suppress the two phenomena of nonlinear expansion and linear expansion. (Means for solving the problem) The first characteristic of the Mingjian __The biological treatment of the wastewater with two insoluble substances by the action of activated sludge Method, mixing activated sludge in waste water with insoluble matter, refining in the wastewater and 312ΧΡ/^Η^ΐ^^^(^φ)/96-〇9/96119296 7 200806588 Dispersing insoluble matter and activated sludge The second feature of the present invention provides a treatment method for biologically treating waste water containing insoluble matter by the action of activated sludge, which is refined and dispersed in the waste water. In the insoluble matter, the activated sludge which has been subjected to the refinement and dispersion treatment is mixed with the waste water to carry out the biological treatment. In the above-described invention, the preferred embodiment includes the following constitution. The above-mentioned method for treating wastewater containing insoluble matter (IV) includes at least a wastewater inflow step containing a non-dissolvable substance, a biological treatment step, and a treatment water separation step. The activated sludge is transferred from the biological treatment step or the treated water separation step described above, and is mixed with the insoluble matter. In the wastewater before dispersion. The mixing ratio of the activated sludge to the wastewater containing the insoluble matter is more than 5% by volume and less than 5% by volume. The above insoluble matter is a fat or oil. The third feature of the present invention provides a waste water treatment apparatus containing an insoluble matter, which is composed of a dispersion device comprising: a waste water introduction pipe for introducing waste water containing insoluble matter and/or introducing an active sewage. a sludge introduction pipe; a water tank having the wastewater introduction pipe and/or the sludge introduction pipe, which can temporarily store the introduced waste water containing insoluble matter and/or the activated sludge; and the inclusion of the accumulated in the water tank The waste water of the insoluble matter and/or the dispersing machine for refining and dispersing the activated sludge; and the transfer pipe for transferring the treated water by the dispersion treatment. (Effect of the Invention) 312ΧΡ/Invention Manual (Supplement)/96-09/96119296 8 200806588 The present invention has the following excellent effects by the above configuration. = In the wastewater treatment method containing the transgenic material (IV) wastewater for biological treatment, the insoluble matter f and the activity can be refined by dispersing and dispersing, and the biological sludge of the activated sludge to the wastewater containing the insoluble matter is promoted. :r: Change the pressure to suppress the non-linear attack caused by the decrease in the specific gravity of the activated sludge. Further, the step of refining and dispersing the active π mud 'linear fine gm sludge block by the dispersing device to improve the sedimentation separation' can also improve and suppress the linear expansion phenomenon.

By using the present invention, it is possible to easily improve and suppress the nonlinear expansion phenomenon and the linear expansion phenomenon in a short period of time, and the stability of the operation of the wastewater treatment equipment can be greatly improved. [Embodiment] The insoluble matter of the present invention means a gelatinous substance such as oils and fats, protein or starch, or the like. Further, the oil and fat of the present invention is an animal or vegetable oil or a mineral oil. The embodiments of the present invention will be described below with reference to the drawings, but the present invention is not limited to the embodiments. (Embodiment 1) FIG. 1 is a flowchart showing a process of a first embodiment of the present invention. As shown in Fig. 1, this embodiment is composed of an inflow step 2, a dispersion step 3, a biological treatment step 4, and a treatment water separation step 5 in which the wastewater 1 containing the insoluble matter flows. In the present embodiment, the dispersing step 3 is after the inflow step 2, but the dispersing step 3 is not limited to the inflow step 2, and may be set at any position 312XP/invention specification (supplement)/96-09/961192% 9 200806588 = The part 1 of the raw material 1 and the activated sludge 7 may be, for example, before the step 2, it may be placed in the invader of the inflow step 2. In addition, although the return of the sludge 8 - 3 , - x sp ^ v , the return of the file is a dispersion step: two steps in the step 3 can be set before the dispersion step 3, as long as it can be dispersed In the step 3, the boring tool for returning the sludge 8 may be refined and dispersed. The role of the first embodiment. In Fig. 1, the position containing the insoluble bovine deficiencies is transmitted through the flow of the second step (4) to the dispersion step 3. In the dispersion step 3, the insoluble matter in the wastewater i containing the ? (tetra) is refined and dispersed, and then transported to the biological treatment step 4. In the biological treatment step 4, the wastewater 1 containing the insoluble matter is treated in a biological treatment tank such as an aeration tank of the biological treatment step 4. The biologically treated treated water is transferred to the treated water separation step 5. The biologically treated treated water is separated into the supernatant liquid 6 and the activated sludge 7 in the treatment water separation step, and a part of the activated sludge 7 is introduced as a return sludge 8 to the biological treatment step 4, the dispersion step 3 7 In the dispersion step 3, a part of the returned sludge 8 is refined and dispersed, and then biologically treated in the biological treatment tank. Further, the activated sludge which is dispersed and treated in the dispersion of 2:3 is not only the return sludge 82.2, but also the activated sludge introduced from the biological treatment step 4. Further, a part of the active mud 7 is concentrated and stored (not shown), and is left as the remaining π mud 9 out of the treatment system. In addition, the supernatant liquid 6 is disinfected and discharged after being eliminated by the main + step (not shown). The goods '乂312XP/发鸭明书(补件)/96-09/96119296 10 200806588 In addition, the part of the return sludge 8 is divided into the ratio of the waste containing the insoluble matter to the dispersion treatment = most It is better than 5% and at 5. %the following. In order to prevent the non-linear expansion effect by refining, lining, and improving and suppressing the nonlinear expansion effect, the device is also more than 5%. When the amount of treatment increases, the device also changes, so in order to prevent the installation space of the dispersing device. The increase and the increase in cost are preferably less than 50%. In order to refine and disperse the insoluble matter and the activated sludge 々7', the contact efficiency/rate between the insoluble matter and the activated sludge 7 is improved, and the activated sludge treatment of the wastewater i containing the insoluble matter is performed. Good access to 'with the well-known technology (four), can get higher wastewater treatment performance. As a result, it is possible to sufficiently treat the fat and oil which is one of the causes of lowering the specific gravity of the activated sludge, and to improve and suppress the nonlinear expansion phenomenon caused by the decrease in the specific gravity of the activated sludge. Further, although the detailed mechanism is not clear, the activated sludge 7 is refined and dispersed by the dispersing device, and the linear bacteria are detached from the activated sludge 7 through the opening of the interstitial water maintained by the block and the linear bacteria. It can improve sedimentation separation and can also improve and suppress linear expansion. In order to realize the wastewater treatment method containing the insoluble matter in the present invention, the following treatment apparatus can be used more efficiently. Although an embodiment of the processing apparatus of the present invention will be described with reference to Fig. 2, it is not limited to the present embodiment. Fig. 2 is a schematic view showing the processing apparatus of the first embodiment. In Fig. 2, the component symbol 10 is a water tank 1 in which the insoluble matter is retained and a portion 312XP/invention specification (supplement)/96•(d) 6119296 11 200806588. The water tank 8 is returned, and the reference numeral 18 is a side wall in the water tank 10. On the upper side of the water tank 10, a waste water introduction pipe U for introducing waste water into the water tank 1 and a sludge introduction pipe 12 for introducing the partial return sludge 8 are disposed in the water tank 1

A transfer pipe for transferring water to be treated is provided on the lower side of the 1U T. The component symbol 13 is a dispersing device including the agitating blade 14, the driving portion 15, the air tube 16, and the flow manager 17. The agitating blade i 4 is rotated by the driving unit 15 to generate a negative pressure. The air tube 16 is provided at one end of the negative pressure at the center of the negative pressure. Further, the flow tube 17 is provided on the vertical upper side of the rotation center portion of the stirring blade 14, and the upper end portion of the flow tube 17 is disposed to open to the vicinity of the water surface, and the lower end faces the suction portion corresponding to the center portion of the stirring blade 14. The position is configured in an open manner. Further, in the present embodiment, the dispersing device 13 is a machine that uses ultrasonic waves as long as it can refine and disperse the insoluble matter and the partially returned sludge 8 as long as it can be used. A static mixer such as a mixer for a line may be used, and is not particularly limited. = In the case of death, the dispersion machine 13 has the following effects. Waste water containing insoluble materials through the wastewater* inlet pipe 11! The sludge 8 is returned to the cut 1 via the sludge guide and the (4) portion, and the waste water containing the incomplete substance and the partially returned sludge 8 are mixed, and the mixture of η is mixed: 3' is filled with the water tank 10. The mixed liquid 23 passes through the mixed liquid 23 in the vicinity of the rotary-pick-mixing blade 14 of the stirring blade 2, and is moved away from the apple and the square, and is moved toward the side wall of the water tank 1G through the (4), and the private wall 18 forms a rising flow toward the water surface. Move, = move 'moves along the side mixture 23 toward the side wall 18, square leaf = 312XP / invention manual (supplement) / 96-〇9/96119296 12 200806588 The heart generates a negative pressure, which can be inhaled and mixed from above Liquid 23. In addition, in the air tube 16 provided at the end facing the middle c opening of the scrambled leaf 14, 'the internal air pressure drops due to the waste of the position of the mixing leaf, and the opening is toward the air::: negative air, through the stirring The central portion of the leaf 14 is open to draw in air. The discharged air 'dissipates with the mixed liquid 23 and is cut by the rotation of the stirring blade 14, and the cut finer, upper bubble 22 is sent out to the mixed liquid 23. Forming fine gas

By reducing the water depth of the mixed liquid 23 in the water tank 10, the number of rotations of the mixing blade 14 is increased, and the mixing liquid 23 in the vicinity of the center of rotation of the stirring SU is also sucked toward the stirring blade 14, and the entire right is introduced into the stirring blade 14. Achieve finer cutting and dispersion. In the mixed liquid 23 after the (9) micronization and dispersion treatment, more effective contact is achieved between the waste water 1 containing the insoluble matter and the partially returned sludge 8. Then, due to the rising action of the fine bubbles 22 sent to the vicinity of the side wall 18 of the water tank 1 by the rotation of the stirring blade 4, the upward flow 20 of the mixed liquid 23 near the side wall 18 of the water tank 1 becomes more intense. . Further, by providing the flow tube 17 at a position corresponding to the suction portion of the stirring blade 14, the upward flow 20 near the side wall 18 and the downward flow 21 sucked into the stirring blade ι4 are divided, so that the downward flow 21 occurring at the center portion is further Significantly, the phenomenon in which the mixed solution 23 stays in the vicinity of the side wall 18 is almost eliminated. Further, by providing the flow tube 17 as described above, the upward flow 20 in the vicinity of the side wall 18 can be surely introduced into the center portion of the stirring blade 14, and the wastewater 1 containing the insoluble matter and the partially returned sludge 8 can be mixed. The ascending flow 312XP/invention specification (supplement)/96-09/96119296 13 200806588 is placed into the mixing leaf 14 and is finely placed by the action of the rotary cutting, and the field knife is placed in the mixed liquid 23. Further, the gap between the flow tube 7 and the water button 10' is narrowed, and in order to be able to handle a large amount of the mixed liquid 23, it is known that the vertical tank 1' can be cut more efficiently. This liquid mixture 23 inside. Further, the increase in the number of rotations of the scrambled leaves is increased by increasing the flow rate of the mixed liquid introduced into the flow tube 17 per hour through the agitating blades 14, so that the cutting can be performed finer in a short time. (Embodiment 2) Fig. 3 shows a second embodiment of the present invention. Unlike the first embodiment, the wastewater containing the insoluble matter flowing into the step 2 is introduced into the dispersion step 3, and the insoluble matter and the partially returned sludge 8 are refined and dispersed, and then introduced into the wastewater. Flow into step 2. In addition, other departmental injuries are the same as those of the brothers, so they are not detailed.

The effects of the second embodiment will be described below. As shown in Fig. 3, the water I containing the insoluble matter passes through the inflow step 2, and is introduced into the biological treatment step 4. The waste water containing the insoluble matter in the flow-through step 2 is introduced into the dispersion step 3, and the insoluble matter is refined and dispersed, and then transferred to the inflow step 2. The waste water containing the insoluble matter is sent to the biological treatment tank such as the aeration tank of the biological treatment step 4 after being sent to the biological treatment step 4. The biologically treated treated water is transferred to the treated water separation step 5. In the treated water separation step 5, it is separated into the supernatant liquid 6 and the activated sludge 7, and a part of the activated sludge 7 is introduced into the dispersion step 3 as the return sludge 8. A portion of the returned sludge 8 is mixed with the wastewater 1 containing the 312XP/invention specification (supplement)/96-09/96119296 14 200806588 insoluble matter in the dispersion step 3, after being refined and dispersed, and then transferred to the inflow step 2 Then, import it into the biological processing step. Further, a part of the activated sludge 7 is treated by a concentration and storage step (not shown), and then it is sent out as excess sludge 9. In addition, the supernatant liquid 6 is sterilized after being disinfected (not shown) and released. (Embodiment 3) Fig. 4 shows a third embodiment of the present invention. Unlike the first embodiment, the dispersing step is divided into a waste water dispersing step 3a for refining and dispersing the insoluble matter, and a sludge dispersing step 3b for refining and dispersing the returned sludge 8. Further, the other portions are the same as those of the first embodiment, and therefore will not be described in detail. The effect of the second embodiment will be described below. The wastewater 1 containing the insoluble matter is introduced into the wastewater dispersion step 3a through the inflow step 2, and the insoluble matter is refined and dispersed, and then sent to the biological treatment step 4. On the other hand, a part of the returned sludge 8 is introduced into the sewage. In the mud dispersing step 3b, after the refining and dispersing treatment, it is sent to the biological treatment step 4. In the different dispersion steps, the insoluble matter and a part of the returned sludge 8 are separately treated, and the two can be refining and dispersing, and the refining and dispersing treatment can be performed uniformly, and the finer type can be obtained according to the type of the wastewater. The effect of dispersing and dispersing. In the present embodiment, the wastewater dispersion step 3a is after the inflow step 2, but the wastewater dispersion step 3a is not limited to the insoluble matter after the inflow step 2, as long as the insoluble matter introduced into the biological treatment step 4 can be refined and dispersed. Wherever possible, for example, it may be set in the process 312XP/invention specification (supplement)/96-09/96119296 15 200806588 flowing into step 2, or before flowing into step 2. (Example) (Example 1) Hereinafter, a biological treatment experiment was carried out through the embodiment of the present invention. The result is as follows. Waste water containing insoluble substances uses waste water containing simulated oils and fats. Embodiment 1 is a substance treated in accordance with the first embodiment of the present invention. Further, in the comparative example, only the dispersion step of the wastewater was carried out, and the biological treatment experiment of the sludge dispersion step was not performed. Based on the composition of the artificial sewage shown in Table 1, the wastewater containing the simulated oil and fat is adjusted to a predetermined concentration of COD and the concentration of oil. The wastewater containing simulated oil is mixed with vegetable oil commonly used in the food industry. Waste water. [Table 1]

堀Factory production system··Oil concentration meter (〇CMA—300) Principle of measurement and non-dispersive infrared absorption method [Measurement of C0D (acid method)] C0D is based on JIS K0102 17 and is controlled by l〇〇°C The oxygen consumption of potassium permanganate was measured. 312XP/Inventive Manual (Supplement)/96-09/96119296 16 200806588 [Measurement of sv (activated sludge sedimentation rate)] Take activated sludge from a 1L measuring cylinder and let stand for 3 minutes to 6 minutes before measuring the amount of sludge. , expressed as a percentage (%). [Test Method] The conditions employed in the test are listed in Table 2. Bioreactor treatment is carried out using activated sludge, and waste water containing simulated oil and fat is used to disperse vegetable oil in artificial/deficient wastewater. The wastewater containing the simulated oil and fat was added to the activated sludge, and after 24 hours, the oil concentration in the activated sludge was measured by the above-mentioned measuring device, and the above measurement method was used to determine the c〇D degree of the supernatant liquid [Table 2] ]

Example 1 T500mg/L

3Q0mR/L 2QQmR/L ^ sludge Stanley oil concentration water dispersing treatment sludge dispersing treatment time 24 hours Figure 5, Figure 6 shows the example 1 and Bixin on the wastewater containing simulated oil Active fouling after treatment: a graph of the concentration of oil in the middle/liquid and the concentration of c〇D in the supernatant. As shown in Fig. 5 and b_, only the oils and fats were refined and dispersed, and the residual oil of the comparative example 1 after the biological test treatment of the dispersion treatment was 86 mg/L, and the residual was The C0D concentration was 52 mg/L. In the other aspect, the biological treatment test of Example 1 is to treat the surface of the wastewater containing the simulated oil and fat, and to refine and disperse the sludge, thereby remaining in the activated sludge of the second knife. The oil concentration was 48 mg/L, and the upper part was 1%. The nighttime C0D concentrated 312XP/invention specification (supplement)/96_〇9/96119296 17 200806588 degree was 45 mg/L. Fig. 7 is a view showing the results of the sv measurement after the biological treatment of the wastewater of the oil and fat by the treatment method of the example and the comparative example. As shown in Figure 7, the comparison example! The biological treatment test only focused on the oil: ^dispersion s, and the sludge was not dispersed, and the results were 85 and 53, respectively. In contrast, the examples! Biological treatment test 6° Dispersion treatment of waste water containing simulated oil and fat, and sludge refining and dispersion treatment, and the results... and SVe. 72, 39 respectively. D, 、, 田 (Example 2) Further, a biological treatment test was carried out in accordance with the first embodiment of the present invention in order to observe the effect of sludge refinement and dispersion treatment ratio. [Test method] Stomach The conditions of the test are listed in Table 3. The biological treatment system uses activated sludge, and the wastewater containing simulated oil and fat is wastewater which is obtained by dispersing vegetable oil in artificial sewage. The wastewater containing the simulated oil and fat was adjusted to a predetermined concentration, and 50 ml of the adjusted concentration of waste water containing simulated oil was taken, and mixed with 5 ml of the activated sludge to carry out a batch test. At this time, a certain amount is taken out from the activated sludge 5 〇 ml so that it is refined and dispersed in a predetermined ratio with respect to the wastewater containing the simulated oil and fat, and then mixed. The concentration of the oil in the activated sludge after 24 hours was measured by the above measuring apparatus. 312XP/Invention Manual (supplement)/96·〇9/96119296 200806588 [Table 3]

A graph of oil ingress in lt tongue sludge. As shown in Fig. 8, when the ratio of the two/knife ratio is more than 5%, the biological treatment promoting effect of the oil and fat can be obtained. Therefore, the wastewater containing the insoluble matter is refined and dispersed, and the sludge is refined and dispersed, so that the sludge can be efficiently treated: the activated sludge treatment of the wastewater containing the insoluble matter is not only obtained by the conventional sludge. The wastewater treatment performance also improves sedimentation. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a flowchart showing the processing of the first embodiment of the present invention. Fig. 2 is a schematic view showing a processing apparatus according to the first embodiment. Fig. 3 is a flowchart showing the processing of the second embodiment of the present invention. Fig. 4 is a flowchart showing the processing of the third embodiment of the present invention. Fig. 5 is a graph showing the residual oil concentration in the activated sludge after the biodegradation treatment tests of Example 1 and Comparative Example 1. Fig. 6 is a graph showing the COD concentration of the supernatant liquid after the biodegradation treatment test of Example 1 and Comparative Example 1. Fig. 7 is a graph showing the sedimentation rate SV3 of activated sludge after eight hours and 60 minutes in the treatment tests of Example 1 and Comparative Example 1. And SVs. A graph of changes over time. 312XP/Invention Manual (Supplement)/96-09/96119296 19 200806588 Person, 8 is a graph showing the residual oil concentration in the activated sludge after the biodegradation treatment in the treatment test of Example 2. Fig. 9 is a flow chart showing the prior art for treating waste water containing insoluble matter. [Main component symbol description] 1 Waste water containing insoluble matter 2 Inflow step 3 Dispersion step 3a Waste water dispersion step 3b Sludge dispersion step 4 Biological treatment step 5 Treatment water separation step 6 Shangcheng liquid 7 Activated sludge 8 Return sludge 9 Remaining Sludge 10 Sink 11 Wastewater introduction pipe 12 Sludge introduction pipe 13 Dispersing device 14 Stirring blade 15 Drive unit 16 Air pipe 17 Flow pipe 312XP / Invention book (supplement) / 96-〇9/96119296 20 200806588 18 Side wall 19 Transfer Tube 20 Upflow 21 Downstream ^ 22 Microbubbles 23 Mixed solution 24 Waste water containing insoluble matter 25 Inflow step • 26 Biological treatment step 27 Treatment water separation step 28 Shangcheng 29 Sludge 30 Excess sludge

312XP/Invention Manual (supplement)/96-09/96119296 21

Claims (1)

200806588 X. Patent application scope: 1. A wastewater treatment method containing an insoluble matter, which is a treatment method for biologically treating waste water containing insoluble matter by the action of activated sludge, characterized in that the wastewater containing the insoluble matter is mixed. The biological sludge is refined and dispersed in the wastewater to dissolve the insoluble matter and activated sludge. 2. A wastewater treatment method containing an insoluble matter, which is a treatment method for biologically treating waste water containing insoluble matter by the action of activated sludge, characterized in that it is refined and dispersed in the wastewater in the wastewater. The non-synthetic substance of the ruthenium is followed by the biological treatment by mixing the refined and dispersed activated sludge into the wastewater. 3. A method for treating waste water containing insoluble materials according to the second or second aspect of the patent application, wherein the above-mentioned waste water treatment method containing insoluble matter includes a waste water inflow step with insoluble matter, a biological treatment step, and treated water separation. step. In the wastewater treatment method containing the insoluble matter according to the third aspect of the invention, the activated sludge is transferred from the biological treatment step or the treatment water separation step, and mixed in the wastewater containing the insoluble matter. A method for treating wastewater containing insoluble shellfish according to any one of claims 1 to 4, wherein the mixing ratio of the activated sludge to the wastewater containing the insoluble matter is greater than 5% by volume, and Below 50%. 6. Insoluble matter according to any one of claims 1 to 5 312 ΧΡ / invention specification (supplement) 〇 9/96119296 22 200806588 Qualitative wastewater treatment method 'wherein the above insoluble matter is a fat or oil. 7. A waste water treatment device containing an insoluble matter, characterized in that it is composed of a knife-shaped I device, and the dispersion device includes: a waste water introduction pipe for introducing waste water containing insoluble matter and/or a sludge for introducing activated sludge The inlet pipe; the water tank of the waste water introduction pipe and/or the sludge introduction pipe, which can temporarily store the wastewater containing the insoluble matter and/or the activated sludge; and accumulate in the 5th sink The waste water containing the insoluble matter and/or the dispersion machine in which the activated sludge is refined and dispersed; and the transfer pipe for transferring the treated water to be dispersed. 31 invention manual (supplement) /96-09/96119296 23