JP5627313B2 - Organic wastewater treatment equipment - Google Patents

Description

  The present invention relates to an organic wastewater treatment apparatus for purifying sewage, human waste and other organic wastewater.

  Conventionally, an organic wastewater treatment apparatus for purifying sewage, human waste and other organic wastewater has a number of purification treatment tanks, and after decomposing organic matter and ammonia by microorganisms in the microorganism treatment tank, solid-liquid separation is performed. In the tank, solids and treated water are separated, and the treated water is further subjected to advanced treatment such as agglomeration treatment in an aggregating treatment apparatus (for example, see Patent Document 1). In the coagulation treatment apparatus described in Patent Document 1, the treatment water separated in the solid-liquid separation tank is added with a polymerization coagulant containing a silica component and an iron component under acidic to neutral conditions of pH 5 to 7.5. Is agglomerated, and further purified by a solid-liquid separation tank and a filtration tank.

  Conventional organic wastewater treatment equipment has many purification treatment tanks corresponding to each process such as a microorganism treatment process, a solid-liquid separation process, an agglomeration treatment process, and a filtration process. As a result, the installation location of the wastewater treatment facility is limited, and the installation of the wastewater treatment facility is expensive.

  The applicant of the present application performs wastewater treatment of wastewater containing a large amount of organic matter such as wastewater from restaurants and food / beverage factories and livestock barnage even in areas where sewerage is not maintained, with simple equipment with few processing steps. An organic wastewater treatment apparatus that can be used is provided (see Patent Document 2). An organic wastewater treatment apparatus described in Patent Document 2 includes an active oxygen supply device that supplies active oxygen to a wastewater treatment tank that purifies organic wastewater containing organic matter using useful microorganisms and a silicon flocculant, and a treatment A filtering device for filtering the waste water is provided.

JP 2004-33897 A International Publication No. 2010/049971

  However, in conventional organic wastewater treatment equipment, when a membrane separation system is used in a solid-liquid separation tank, clogging of the membrane occurs due to the solid content contained in the wastewater, and the membrane is frequently washed and replaced. There is a problem that it is necessary, complicated, and expensive. On the other hand, in the gravity sedimentation type solid-liquid separation tank, since the solid-liquid separation process takes time, there is a problem that the waste water treatment time becomes long and the apparatus itself becomes large.

  The organic wastewater treatment apparatus described in Patent Document 2 has a number of treatment steps compared to conventional water treatment apparatuses, can be downsized, and can be reliably purified of organic wastewater. Water treatment equipment. As described above, an organic wastewater treatment apparatus is desired to be an inexpensive treatment apparatus that can be installed in a narrow place, and further functional rationalization and miniaturization have been demanded.

  Accordingly, the present invention provides an organic wastewater treatment capable of shortening the wastewater treatment time for purifying sewage, human waste and other organic wastewater, and reducing the running cost by reducing the wastewater treatment device. A device is provided.

  In order to solve the above-mentioned problems, the present invention is an organic wastewater treatment apparatus having a wastewater treatment tank for purifying organic wastewater containing organic matter using useful microorganisms and a flocculant, and from the wastewater treatment tank The present invention provides an organic wastewater treatment apparatus in which drainage channels for discharging treated water are arranged meandering up and down, and a narrow channel portion is formed in an upward channel portion of the drainage channel.

  Moreover, the organic waste water treatment apparatus of this invention forms a narrow path part in the downward flow path part of the said drainage channel.

  Moreover, the organic waste water treatment apparatus of this invention forms the said narrow path part in the lower part of the upward flow path part of the said drainage channel, and a downward flow path part.

  Moreover, as for the organic waste water treatment apparatus of this invention, the cross-sectional area of the said narrow path part is 10%-70% of the cross-sectional area of the drainage path except the said narrow path part.

  Moreover, the organic waste water treatment apparatus of this invention arrange | positions the upper side folding | turning part of the said drainage channel in the position lower than the water intake from the said wastewater treatment tank to the said drainage channel.

  In the organic wastewater treatment apparatus of the present invention, the drainage channel is meandered a plurality of times, and the plurality of upper folded portions are sequentially lowered from the intake port side toward the discharge port side. It is arranged.

  Moreover, the organic waste water treatment apparatus of this invention is equipped with the filtration apparatus which filters the treated water discharged | emitted from the said drainage channel.

  In the organic wastewater treatment apparatus of the present invention, the flocculant is a silicon flocculant obtained by dissolving a silicon-containing solute obtained by mixing and heat-treating a silicon-containing substance and an alkaline substance in an acid solvent.

  The organic waste water treatment apparatus of the present invention is characterized in that the silicon-containing solute is heat-treated at a temperature not higher than the thermal melting point of the silicon-containing substance.

  In the organic wastewater treatment apparatus of the present invention, the alkaline substance is made of calcium carbonate or lime.

  In the organic waste water treatment apparatus of the present invention, the silicon-containing substance contains magnesium or a magnesium compound.

  In the organic waste water treatment apparatus of the present invention, the silicon-containing solute is composed of one or more substances selected from the group consisting of cement, cement intermediate products, blast furnace slag, and coal ash.

  In the organic wastewater treatment apparatus of the present invention, the acid solvent is dilute hydrochloric acid.

  In the organic wastewater treatment apparatus of the present invention, the acid solvent contains one or more gelation inhibitors selected from the group of acetic acid, ammonium acetate, and ammonium chloride.

  Moreover, the organic waste water treatment apparatus of this invention is equipped with the sludge discharge | emission mechanism which discharges sludge to the lower side folding | returning part of the said drainage channel.

  The organic waste water treatment apparatus of the present invention includes a sludge treatment tank that contains a carrier carrying microorganisms and decomposes the discharged sludge with microorganisms, and the sludge treatment tank stirs the carrier and the sludge. It has a stirring member to be mixed, and contains one or two or more useful microorganisms selected from the group of photosynthetic bacteria, Bacillus bacteria, lactic acid bacteria, and yeast, and a microbial activator that activates the useful microorganisms, The sludge is decomposed.

  The organic wastewater treatment apparatus of the present invention is an organic wastewater treatment apparatus having a wastewater treatment tank that purifies organic wastewater containing organic substances using useful microorganisms and a flocculant, and the treated water is treated from the wastewater treatment tank. The drainage channel that discharges water is arranged meandering up and down, and by having a configuration in which the narrow channel portion is formed in the upward channel portion of the drainage channel, the treated water that flows upward through the drain channel has the narrow channel portion. When passing, the sludge contained in the treated water stays in front of the narrow passage and settles, mainly because only water passes through the narrow passage, so that the sludge is removed every time the treated water passes through the narrow passage. There is an effect that can be separated and sludge that could not be purified in the waste water treatment tank can be separated easily and quickly.

  In addition, the organic wastewater treatment apparatus of the present invention can separate sludge while the treated water flows through the drainage channel, so that a solid-liquid separation tank is not required and the entire apparatus can be downsized, There is an effect that the solid-liquid separation time can be shortened and the entire processing step can be shortened.

  Moreover, the organic waste water treatment apparatus of this invention has the effect that it can prevent that the separated sludge flows backward by forming the narrow path part in the downward flow path part of the said drainage channel.

  Further, the organic wastewater treatment apparatus of the present invention is configured such that the narrow sludge portion is formed at the lower portion of the upward flow passage portion and the downward flow passage portion of the drainage passage, so that the separated sludge is separated from the lower return portion of the drainage passage. It has the effect that it can be quickly precipitated and discharged.

  Moreover, the organic waste water treatment apparatus of this invention is a process which passes a narrow path part because the cross-sectional area of the said narrow path part is 10%-70% of the cross-sectional area of the drain path except the said narrow path part. There is an effect that the sludge can be reliably separated while securing the flow rate of water.

  Moreover, the organic waste water treatment apparatus of the present invention has disposed the upper folded portion of the drainage channel at a position lower than the water intake port from the drainage treatment tank to the drainage channel, thereby using the water pressure to treat the treated water. There is an effect that it can be easily discharged from the waste water treatment tank.

  In the organic wastewater treatment apparatus of the present invention, the drainage channel is meandered a plurality of times, and the plurality of upper folded portions are sequentially lowered from the intake port side toward the discharge port side. By arranging, drainage resistance due to meandering drainage channels can be reduced, and treated water can be easily discharged from the wastewater treatment tank.

  In addition, the organic wastewater treatment apparatus of the present invention includes a filtration device that filters the treated water discharged from the drainage channel, so that the treated water from which sludge is separated can be treated with various ultrafiltration membranes (UF membranes). There is an effect that it is possible to obtain reusable treated water by filtration through the submerged membrane used.

  In the organic waste water treatment apparatus of the present invention, the flocculant is a silicon flocculant obtained by mixing a silicon-containing substance and an alkaline substance and heat-treating a silicon-containing solute dissolved in an acid solvent. When a silicic acid solution (silicon sol) obtained by dissolving a solute in an acid solvent is gelled, it can wrap and flocculate organic matter in the organic waste water. Since silicon sol becomes porous when gelled, the incorporated organic matter is decomposed by the activated microorganisms supported and activated by the porous floc, and the amount of discharged sludge can be greatly reduced. There is an effect that can be done.

  In addition, by using this silicon flocculant, the silicic acid solution in which silicon or an alkaline substance is dissolved in an acid solvent promotes the growth of useful microorganisms used for the purification treatment of organic wastewater, and maintains the activated state of the useful microorganisms. There is an effect that can.

  That is, the organic wastewater treatment apparatus of the present invention can reliably decompose the organic matter contained in the organic wastewater by the activated useful microorganisms, and the suspension that is difficult to decompose is agglomerated by the silicon flocculant and drained. It can be separated at the narrow part of the road. Further, since this silicon flocculant forms a smooth floc, the filtration membrane is not easily clogged, and the life of the filtration membrane can be greatly extended.

  Further, the organic waste water treatment apparatus of the present invention has an acid solubility since the silicon-containing solute has been heat-treated at a temperature not higher than the thermal melting point of the silicon-containing substance. There is an effect that a stable silicon sol can be generated by dissolving in a solvent.

  In the organic waste water treatment apparatus of the present invention, since the alkaline substance is made of calcium carbonate or lime, the silicon-containing solute becomes powdery, so that the solubility in an acid solvent can be improved. Further, by using this silicon flocculant, since silicon sol contains abundant calcium, there is an effect of promoting the growth of useful microorganisms and maintaining the activated state of useful microorganisms.

  Further, the organic waste water treatment apparatus of the present invention, since the silicon-containing substance contains magnesium or a magnesium compound, the silicon sol contains abundant inorganic salts that promote the growth of useful microorganisms. It is effective to promote and maintain the activated state of useful microorganisms.

  Moreover, the organic waste water treatment apparatus of the present invention is such that the silicon-containing solute is composed of one or more substances selected from the group consisting of cement, an intermediate product of cement, blast furnace slag, and coal ash. The resulting silicon-containing solute can be dissolved in an acid solvent to produce a silicon flocculant composed of a silicon sol. In particular, cement, cement intermediate products, and blast furnace slag are rich in calcium and magnesium, which are inorganic salts that promote the growth of useful microorganisms. Therefore, the generated silicon sol promotes the growth of useful microorganisms. Has the effect of maintaining the activated state.

Moreover, the organic waste water treatment apparatus of the present invention is a safe non-toxic microbial activator because the acid solvent is made of dilute hydrochloric acid, so that hydrochloric acid is highly soluble in calcium and neutralizes into calcium chloride (CaCl ₂ ). There is an effect that can be generated.

  Moreover, the organic waste water treatment apparatus of the present invention is such that the acid solvent contains one or more gelation inhibitors selected from the group consisting of acetic acid, ammonium acetate, and ammonium chloride. Thus, the gelation of the silicon sol can be suppressed and a stable sol state can be maintained for a long period of time, so that the silicon flocculant can be easily stored and transported.

  In addition, the organic wastewater treatment apparatus of the present invention is provided with a sludge discharge mechanism that discharges sludge at the lower folded portion of the drainage channel, so that the sludge separated from the treated water in the narrow channel can be reliably removed from the drainage channel. There is an effect that can be discharged.

  The organic waste water treatment apparatus of the present invention includes a sludge treatment tank that contains a carrier carrying microorganisms and decomposes the discharged sludge with microorganisms, and the sludge treatment tank stirs the carrier and the sludge. It has a stirring member to be mixed, and contains one or two or more useful microorganisms selected from the group of photosynthetic bacteria, Bacillus bacteria, lactic acid bacteria, and yeast, and a microbial activator that activates the useful microorganisms, By decomposing sludge, it is possible to maintain the activated state of useful microorganisms suitable for sludge decomposition in the sludge treatment tank, so the sludge discharged from the drainage can be reliably decomposed. There is an effect that can be done.

  The organic wastewater treatment apparatus of the present invention includes a sludge treatment tank, so that even when residual sludge that cannot be purified is generated in the wastewater treatment tank, the residual sludge can be significantly reduced (treatment target). Depending on the situation, it can be completely eliminated).

The block diagram which shows one Example of the organic waste water treatment equipment of this invention. The plane block diagram which shows the other Example of the organic waste water treatment equipment of this invention. The plane block diagram which shows the other Example of the organic waste water treatment equipment of this invention. The block diagram which shows one Example of the sludge processing tank of this invention. Sectional drawing which shows the one Example. AA line sectional view showing the example. The block diagram which shows one Example of an active oxygen supply apparatus. The block diagram which shows the principal part of one Example of an active oxygen supply apparatus.

Embodiments of the present invention will be described based on examples shown in the drawings.
The organic waste water treatment apparatus according to the present invention has a waste water treatment tank 3 for purifying organic waste water containing organic substances using useful microorganisms and a flocculant, and waste water for discharging treated water from the waste water treatment tank 3 The channel 4 is arranged to meander up and down, and a narrow channel portion 41 is formed in the upward channel portion 4 a of the drainage channel 4.

  In the embodiment shown in FIG. 1, a wastewater treatment apparatus 10 includes a wastewater treatment tank 3 that purifies organic wastewater using useful microorganisms and a flocculant, and a drainage channel 4 that discharges treated water from the wastewater treatment tank 3. And a filtration device provided with a flat membrane tank 5 for filtering treated water.

  The wastewater treatment tank 3 is configured to receive raw organic wastewater discharged from restaurants and the like. In the wastewater treatment tank 3, useful microorganisms suitable for the decomposition treatment of the organic matter contained in the organic wastewater are added to keep the useful microorganisms activated. The waste water treatment apparatus 10 may be provided with a flow rate adjustment tank so that the amount of organic waste water flowing into the waste water treatment tank 3 is uniform when the amount of organic waste water flowing into the waste water treatment tank 3 is large. Is possible.

  The waste water treatment tank 3 is provided with an aeration device 31, which sends aeration to organic waste water to which useful aerobic microorganisms are added, aerates and activates the useful microorganisms, thereby decomposing organic substances contained in the waste water. The organic wastewater is purified.

  In the Examples, useful microorganisms are Bacillus bacteria as dominant species, and photosynthetic bacteria are added. Bacillus bacteria are activated by silicon and are excellent in decomposing organic substances such as proteins, starches, fats and oils, and ammonia, and can be used alone. The photosynthetic bacterium is preferably a red non-sulfur bacterium that can act under aerobic conditions. It prefers to decompose organic substances such as fats and oils and starch, and can also decompose hydrogen sulfide and ammonia that cause odors to eliminate bad odors. . Moreover, since the waste water treatment tank 3 is aerated by the aeration apparatus 31, various organic substances can be decomposed by adding other aerobic microorganisms.

  In the examples, as the flocculant, a silicon flocculant obtained by dissolving a silicon-containing solute obtained by mixing and heat-treating a silicon-containing substance and an alkaline substance in an acid solvent is used.

The silicon-containing material is a natural earth or rock containing a silicon compound such as silicon dioxide (SiO ₂ ), or a processed product containing them. In addition, the silicon-containing substance preferably contains iron that has a reducing action and is excellent in agglomeration of ultrafine particles, and that contains magnesium to promote the growth of useful microorganisms such as Bacillus bacteria. preferable. As the silicon-containing material, for example, as shown in Table 1, Ibube white clay (earth in Okinawa Ibube region) containing a high content of silicon dioxide and containing iron oxide (FeO ₃ ) can be used. .

The alkaline substance is mixed in order to change the silicon-containing substance into acid solubility. In the embodiment, calcium carbonate (CaCO ₃ ) or lime is mixed as the alkaline substance with the silicon-containing substance and heat-treated. Thereby, the generated silicon-containing solute becomes powdery, so that solubility in an acid solvent is improved and calcium, which is an inorganic salt that promotes the growth of useful microorganisms, can be included. This heat treatment is preferably performed at a temperature not higher than the thermal melting point of the silicon-containing material, because if it is performed at a temperature higher than the thermal melting point of the silicon-containing material, it becomes glassy and its solubility is lowered. When the silicon-containing material is Ibube Shirato (earth in Ibube, Okinawa Prefecture) shown in Table 1, it is performed at an arbitrary temperature of about 1300 ° C. or lower, which is the thermal melting point of Ibube Shirato, and the thermal melting point. It is preferable to perform heat treatment at 1150 to 1250 ° C., which is close to.

  The silicon-containing solute has excellent acid solubility when heat-treated at a temperature lower than the thermal melting point of the silicon-containing substance, so that it dissolves in an acid solvent to form a stable silicon sol and can be stored for a long time.

  Further, as the silicon-containing solute, a product obtained by mixing and heat-treating a silicon-containing substance and an alkaline substance such as cement, an intermediate product of cement, blast furnace slag, and coal ash can be used. Although these silicon-containing solutes are inferior in acid solubility compared to silicon-containing solutes that have been heat-treated at a temperature lower than the thermal melting point of the silicon-containing substance, they must be dissolved in an acid solvent containing a gelation inhibitor described later. Thus, a stable silicon sol can be generated. Moreover, since these silicon-containing solutes contain inorganic salts, they can activate useful microorganisms. In particular, ordinary cement is relatively excellent in acid solubility, and as shown in Table 1, since it contains abundant magnesium and calcium, which are inorganic salts that promote the growth of useful microorganisms, ordinary cement should be used as a silicon-containing solute. Is preferred. The silicon-containing solute may be used by mixing two or more substances selected from the group consisting of cement, cement intermediates, blast furnace slag, and coal ash.

In the examples, hydrochloric acid (HCl) was used as the acid solvent. Hydrochloric acid (HCl) is highly soluble in calcium and, when neutralized, becomes calcium chloride (CaCl ₂ ) and is safe and non-toxic. Therefore, hydrochloric acid is preferably used as the acid solvent. Further, since the solubility of silicon with respect to the acid concentration is constant and the density of the silicon sol dispersed in the liquid volume can only be kept stable in a constant water gap, diluted hydrochloric acid diluted with hydrochloric acid as an acid solvent. In particular, it is preferable to use dilute hydrochloric acid diluted 3 to 7 times. The acid solvent is not limited to hydrochloric acid (HCl), and other acid solutions can also be used.

The acid solvent contains one or more gelation inhibitors selected from the group consisting of acetic acid (C ₂ H ₄ O ₂ ), ammonium acetate (CH ₃ COONH ₄ ), and ammonium chloride (NH ₄ Cl). Preferably there is. The acid solvent contains acetic acid (C ₂ H ₄ O ₂ ) as a gelation inhibitor, so that the drop amount of acetic acid is adjusted by adjusting the acetic acid pH buffering action and the convergence of the sol and colloid. Gelation can be suppressed. In addition, since organic acids such as acetic acid are excellent substrates for red bacteria, it is possible to further activate useful microorganisms such as red bacteria by using acetic acid as a gelation inhibitor.

  When this silicon flocculant is put into the waste water treatment tank 3, the acid solvent is diluted with organic waste water and gelled. When the silicon flocculant gels, it wraps around and flocculates organic matter in the organic waste water to form a floc. Since this floc becomes porous, it also acts as a carrier for supporting useful microorganisms, and organic substances taken into the floc can be decomposed by the useful microorganisms.

  In the wastewater treatment tank 3, the hydrogen ion concentration in the tank is maintained at pH 6.5 to 8.3, the activated sludge concentration (MLSS) is maintained at 3000 mg / L or more, and activated microorganisms are activated. It is preferable to introduce the flocculant into the tank. When the useful microorganisms are activated, the organic matter contained in the organic waste water is fragmented, so when the silicon flocculant gels, it can quickly take in the organic matter and form a floc, and the time for water treatment Can be shortened.

  As shown in FIG. 1, the wastewater treatment apparatus 10 includes a drainage channel 4 arranged meandering up and down, and is configured so that treated water after purification treatment can be discharged from the upper part of the wastewater treatment tank 3. It is. In the drainage channel 4, a narrow channel portion 41 having a cross-sectional area narrower than other portions is formed below the upward channel portion 4a and the downward channel portion 4b. In the embodiment, the narrow passage portion 41 is formed by a synthetic resin pipe having a diameter of 50 mm, and the drainage passage 4 of the other portion is formed by a synthetic resin pipe having a diameter of 100 mm. The cross-sectional area of the narrow path part with respect to the area is 25%).

  When the treated water flowing through the upward flow path portion 4a passes through the narrow channel portion 41, it strikes the changing portion 42 where the diameter of the drainage channel 4 changes, generating a vortex and separating the sludge contained in the treated water. The separated sludge stays in front of the narrow passage portion 41 and gradually settles, and mainly only water passes through the narrow passage portion 41. Therefore, every time treated water passes through the narrow passage portion 41, the sludge is separated. be able to. The narrow passage portion 41 can be formed only in the upward flow passage portion 4a, but by forming it in the downward flow passage portion 4b, the separated sludge can be prevented from rising and flowing backward.

  The cross-sectional area of the narrow channel portion 41 is 10% of the cross-sectional area of the drainage channel 4 excluding the narrow channel portion 41 because the sludge can be reliably separated while ensuring the flow rate of treated water passing through the narrow channel portion 41. % To 70% (diameter ratio of about 30% to 80%), preferably 25% to 55% (diameter ratio of about 50% to 75%) of the cross-sectional area of the drainage channel 4 excluding the narrow channel portion 41 It is more preferable that it is formed in (1). The narrow path portion 41 and the change portion 42 are formed as a single unit and are connected to the drainage channel 4 constituting the other part. The size of the narrow path portion 41 can be appropriately selected according to the characteristics of the organic waste water to be treated.

  The change part 42 is formed in the inclination angle which can isolate | separate the sludge contained in a treated water reliably, and it is preferable to form in the inclination angle 45 degrees-90 degrees.

  The upper folded portion 4c of the drainage channel 4 is disposed at a position lower than the water intake 43 for taking the treated water from the drainage treatment tank 3 to the drainage channel 4, and the treated water can be easily discharged from the wastewater treatment tank 3 using water pressure. It is configured so that it can be discharged. Further, the drainage channel 4 is arranged meandering a plurality of times, and the plurality of upper folded portions 4 c are arranged so as to become lower in order from the intake port 43 side to the discharge port 44 side. Since the drainage channel 4 is configured as described above, the drainage resistance due to the meandering of the drainage channel 4 can be reduced, and the treated water can be easily discharged from the wastewater treatment tank 3.

  In the illustrated embodiment, the drainage channel 4 is arranged to meander twice in the vertical direction. The drainage channel 4 may be provided with one or more upward flow path portions 4a in which the narrow channel portion 41 is formed, and the number of meanders of the drainage channel 4 is appropriately set according to the characteristics of the organic drainage to be treated. It is possible.

  The narrow channel portion 41 can be formed at any position of the upward flow channel portion 4a and the downward flow channel portion 4b, but the separated sludge is quickly settled in the lower folded portion 4d of the drainage channel 4. Therefore, it is preferable that they are formed below the upward flow path portion 4a and the downward flow path portion 4b.

  As shown in FIG. 1, the lower folded portion 4 d of the drainage channel 4 is provided with a sludge discharge mechanism 6 that discharges residual sludge. The sludge discharge mechanism 6 includes a sludge transport path 61 having a screw 62 therein, a motor 63 that drives the screw 62, and a sludge discharge pipe 64 that discharges residual sludge transported in the sludge transport path 61. It is.

  Each lower folded portion 4d of the drainage channel 4 is provided with a sludge discharge pipe 45 so that residual sludge settled on the lower folded portion 4d can be discharged to the sludge discharge mechanism 6. The sludge discharge mechanism 6 drives the screw 62 with the motor 63, conveys the sludge received from the sludge discharge pipe 45 into the sludge conveyance path 61, and discharges it from the sludge discharge pipe 64. The sludge discharge pipes 45 and 64 are provided with valves 46 and 65, respectively, and when the screw 62 is driven, the valves 46 and 65 are opened to discharge sludge.

  The residual sludge discharged from the sludge discharge mechanism 6 can be returned to the waste water treatment tank 3 or the flow rate adjustment tank and purified by useful microorganisms. Moreover, this residual sludge can be conveyed to a sludge treatment tank 100 described later and decomposed.

  Since the wastewater treatment apparatus 10 can easily and quickly separate residual sludge that could not be purified in the wastewater treatment tank 3 by the drainage path 4 in which the narrow passage portion 41 is formed, a solid-liquid separation tank is unnecessary. Thus, the entire apparatus can be reduced in size, and the solid-liquid separation time can be shortened to shorten the entire time of the water treatment process. The waste water treatment device 10 can be installed even in a place where it is difficult to secure the installation location of the device because the drainage channel 4 is arranged around the waste water treatment tank 3 so that the installation location of the waste water treatment tank 3 is sufficient. .

  In the illustrated embodiment, the wastewater treatment device 10 includes a filtration device that filters the treated water discharged from the drainage channel 4. The filtration device is composed of a flat membrane tank 5, and can treat treated water through a submerged membrane using various ultrafiltration membranes (UF membranes) to obtain reusable treated water. Since the flat membrane tank 5 receives the treated water from which the sludge is separated by the drainage channel 4, the treated water can be drawn out at a low pressure.

  The flat membrane tank 5 includes an aeration apparatus 51 and a backwashing mechanism for cleaning the flat membrane. The backwash mechanism has a discharge tank 52 that stores filtered water filtered through a flat membrane, a water supply pipe 53 that supplies filtered water to the discharge tank 52, and a filtered water stored in the discharge tank 52 that is supplied to the flat membrane for cleaning. It is composed of a backwash water pipe 54.

  Since the wastewater treatment apparatus 10 of the example forms a free-flowing floc by using a silicon flocculant, the flat membrane tank 5 is not easily clogged, and can be reliably washed by a backwashing mechanism. The lifetime of the membrane could be extended significantly (more than half a year). In addition, the waste water treatment apparatus 10 of the example uses a silicon flocculant, so that silicon is easily dissolved in the treated water, and the surface of the flat membrane is always washed by the surface active action and aeration of silicon. It is guessed.

  In addition, the waste water treatment apparatus 10 can also be configured without a filtration device.

  In the embodiment shown in FIGS. 2 and 3, the waste water treatment apparatus 10 is organic using a raw water tank 1 into which raw water of organic waste water flows, a precipitation tank 2 that removes solids from the raw water, and useful microorganisms and flocculants. The wastewater treatment tank 3 for purifying the effluent, the drainage channel 4 for discharging the treated water from the wastewater treatment tank 3, and the filtration device that includes the flat membrane tank 5 and filters the treated water.

  The raw water tank 1 is provided with an aeration device 11 so that raw water of organic wastewater discharged from a restaurant or the like flows in. In the raw water tank 1, useful microorganisms suitable for decomposing organic substances contained in organic wastewater are added to keep the useful microorganisms activated. The raw water tank 1 is configured to feed the stored raw water to the waste water treatment tank 3 in accordance with the purification treatment capacity of the waste water treatment tank 3 so that the flow rate of the raw water and fluctuations in water quality can be made uniform. The raw water tank 1 maintains the hydrogen ion concentration in the tank at pH 6.5 to 8.3, maintains the activated sludge concentration (MLSS) at 3000 mg / L or more, and activates useful microorganisms. The raw water can be sent to the waste water treatment tank 3.

  As shown in FIG. 3, the sedimentation tank 2 is provided with a filtration membrane 21 formed of sponge. The raw water is fed to the lower side of the filtration membrane 21 by the water feeding pipe 12, and the raw water filtered by the filtration membrane 21 is supplied to the sedimentation tank 2. It can be stored in the upper part of the settling tank 2. The lower part of the settling tank 2 is formed in a conical shape, and the precipitated solid content is discharged from a discharge pipe 13 provided at the center lower end of the tank. The solid content discharged from the discharge pipe 12 can be returned to the raw water tank 1 and the decomposition process using useful microorganisms can be repeated. The raw water stored in the upper part of the settling tank 2 is sent to the waste water treatment tank 3 through the water pipe 22.

  The waste water treatment tank 3 is provided with an aeration device 31, and useful microorganisms and a silicon flocculant suitable for the decomposition treatment of the organic matter contained in the organic waste water are added. The same useful microorganism and silicon flocculant as in Example 1 are used.

  In the embodiment, the raw water tank 1 and the waste water treatment tank 3 are formed so as to be able to accommodate raw water having a volume of about four times the daily treatable water volume so that the useful microorganisms in the tank can be activated. ing. In the wastewater treatment apparatus 10 of the embodiment, the organic matter contained in the organic wastewater in the wastewater treatment tank 3 is subdivided by activated useful microorganisms, so that the organic matter is quickly removed when the silicon flocculant gels. The flocs could be formed by taking in, and the time required for aggregation could be reduced to about 1/4 of the conventional time.

  Other configurations of the wastewater treatment apparatus 10 of the embodiment are the same as those of the first embodiment, such as the drainage channel 4 and the flat membrane tank 5. Since this wastewater treatment apparatus 10 can separate sludge while the treated water flows through the drainage channel 4, the time required for solid-liquid separation is about 1/10 compared with the prior art using a solid-liquid separation tank. Was able to be shortened. This waste water treatment apparatus 10 eliminates the need for a solid-liquid separation tank, and can significantly reduce the time required for water treatment such as agglomeration as compared with the prior art. It became possible to form the whole compactly.

  The organic wastewater treatment apparatus of the present invention includes a sludge treatment tank 101 that contains a carrier carrying microorganisms and decomposes the discharged sludge with microorganisms. The sludge treatment tank 101 is agitated for stirring and mixing the carrier and sludge. It has a member 102 and contains one or more useful microorganisms selected from the group of photosynthetic bacteria, Bacillus bacteria, lactic acid bacteria, and yeast, and a microbial activator that activates the useful microorganisms, and decomposes sludge. It can also be configured to process.

  In the embodiment shown in FIG. 4, the sludge treatment apparatus 100 contains a carrier carrying microorganisms and is provided in a sludge treatment tank 101 for decomposing sludge with microorganisms, and the sludge treatment tank 101. The carrier and sludge are mixed by stirring. From the agitation member 102, the blowing mechanism 104 for sending air into the sludge treatment tank 101, the active oxygen supply device 103 for supplying active oxygen into the sludge treatment tank 101, and the sludge treatment tank 101. And a deodorizing device 105 for deodorizing the exhaust gas discharged.

  As shown in FIGS. 5 and 6, the sludge treatment tank 101 has a semicylindrical lower part to form a sludge containing part, and an upper part having a rectangular cross section to form a roof part. An opening is provided in the roof portion of the sludge treatment tank 101 to form an inlet 111 for introducing residual sludge. A sludge discharge mechanism 6 is connected to the inlet 111 so that residual sludge is accommodated in the sludge treatment tank 101. In addition, an opening is provided at the bottom of the sludge treatment tank 101 to form a discharge port 112 for discharging the object to be processed in the sludge treatment tank 101. The discharge port 112 is provided with an open / close lid that is formed along the shape of the bottom of the sludge treatment tank 101 and that opens and closes the opening that forms the discharge port 112 so as to be able to be sealed.

  The stirring member 102 includes a stirring shaft 121 provided rotatably in the sludge treatment tank 101 and a plurality of stirring claws 123 erected on the stirring shaft 121 in a radial manner. As shown in FIGS. 5 and 8, the sludge treatment tank 101 uses a stirring member 102 in which a plurality of tilling claws used for a tractor and a tiller are provided as stirring claws 123 around a stirring shaft 121. ing.

  The stirring member 102 has tilling claws erected radially at 90 ° intervals around the axis of the stirring shaft 121 as the stirring claws 123, and the tilling claws are arranged at regular intervals in the axial direction of the stirring shaft 121. . In the illustrated embodiment, the stirring claw 123 is a tilling claw for both forward and reverse rotation. The drive mechanism 120 includes a motor 124 that can rotate forward and backward, and is configured to be able to drive the stirring member 102 so that it can rotate forward and backward.

  The tilling claw is most preferable as the stirring claw 123 because it has strength and durability and can efficiently stir and mix the contents. In addition, the stirring member 102 is not limited to the structure of an Example, The various structure which can stir and mix the support | carrier, sludge, etc. which were accommodated in the sludge processing tank 101 is employable.

  4 and 6, reference numeral 120 denotes a drive mechanism, which is configured so that the stirring member 102 can be rotationally driven. The drive mechanism 120 includes a motor 124, a drive sprocket 125 provided on the drive shaft of the motor 124, a driven sprocket 127 provided on the stirring shaft 121, and an endless chain 126 that transmits the rotational driving force of the drive sprocket 125 to the driven sprocket 127. It consists of. The stirring shaft 121 is rotatably supported by a bearing along the central axis of the semi-cylindrical housing portion of the sludge treatment tank 101.

  In the case of the apparatus of an Example, 3-10 rpm is preferable and, as for the rotation speed of the stirring member 102, 5 rpm is the most preferable. When the rotation speed of the stirring member 102 is 20 rpm or more, the contents in the sludge treatment tank 101 are cooled by the air sent by the blower mechanism 104, the temperature in the sludge treatment tank 101 is lowered, and the sludge decomposition ability by useful microorganisms Is unfavorable because of lowering. On the other hand, when the rotation speed of the stirring member 102 is 1 rpm or less, stirring of the carrier and sludge contained in the treatment tank 101 becomes insufficient, and the ability to decompose sludge by useful microorganisms is lowered, which is not preferable.

  The sludge treatment tank 101 and the stirring member 102 are not limited to the configurations shown in FIGS. 4 to 6, and can accommodate a carrier carrying microorganisms and can stir and mix the carrier and sludge. Well, it is possible to use treatment tanks and stirring members of various shapes.

  In the embodiment shown in FIG. 4, the blower mechanism 104 is arranged in the longitudinal direction of the tank in the sludge treatment tank 101, a blower path 141 for sending air into the sludge treatment tank 101, a blower 142 provided in the blower path 141. The air supply pipe 144 is provided. As shown in FIGS. 5 and 6, a plurality of air supply pipes 44 are arranged along the lower inner peripheral surface of the sludge treatment tank 101. The intake pipe 144 has a plurality of intake ports 145 provided on the side surface at regular intervals so that air and active oxygen can be uniformly supplied into the sludge treatment tank 101. An air supply path 141 is connected to the air supply pipe 144 so that air and active oxygen are fed into the air supply pipe 144 by the blower 142.

  In the embodiment, the blower mechanism 104 includes a circulation path 143 that takes out air from the upper part of the sludge treatment tank 101 and sends it to the blower path 141 to circulate all or part of the air sent into the sludge treatment tank 101. . The air blowing mechanism 104 circulates all or part of the air sent into the sludge treatment tank 101 to prevent the temperature in the sludge treatment tank 101 from decreasing, and the ability to decompose sludge by useful microorganisms decreases. Is preventing. Moreover, the air blowing mechanism 104 is provided with outside air taking-in means so that the inside of the sludge treatment tank 101 can be maintained in an aerobic state by taking in outside air. Note that the air blowing mechanism 104 may be configured without the circulation path 143.

  The sludge treatment apparatus 100 contains one or two or more microorganisms selected from the group of photosynthetic bacteria, Bacillus bacteria, lactic acid bacteria, and yeast as useful microorganisms in a sludge treatment tank 101 together with a carrier supporting the microorganisms. . These useful microorganisms have a high ability to decompose organic matter, and are actively carried by being supported on a carrier accommodated in the sludge treatment tank 101, and can decompose sludge.

  The photosynthetic bacteria contained in the sludge treatment tank 101 are preferably red non-sulfur bacteria that can act under aerobic conditions, preferring to decompose organic matter such as fats and oils and starch, and also decomposing hydrogen sulfide and ammonia that cause odors. Can eliminate odors. Further, since the sludge treatment tank 101 is fed with air by the blower mechanism 104, other aerobic microorganisms can be added to decompose the organic matter.

In the sludge treatment apparatus 100 of an Example, the rice husk is accommodated in the sludge treatment tank 101 as a support | carrier. The rice husk contains abundant silicon dioxide (SiO ₂ ) and a small amount of an alkali element, is suitable as a carrier in shape and size, and can activate useful microorganisms. In particular, Bacillus bacteria are activated by silicon and are excellent in degradability of proteins, starch, fats and oils, ammonia and the like, and it is preferable to use rice husk as a carrier. In addition, the support | carrier accommodated in the sludge processing tank 101 is not restricted to a rice husk, The porous agent formed with the wood chip material processed into the suitable magnitude | size, and the material which does not prevent the proliferation of microorganisms is used. You can also

  Before the useful microorganisms are accommodated in the sludge treatment tank 101, it is preferable that the useful microorganisms have been cultured with an organic substance equivalent to the sludge to be treated. Thereby, the microorganism suitable for decomposition | disassembly of the sludge used as a process target becomes a dominant species, and the processing time of sludge can be shortened.

  The sludge treatment apparatus 100 contains a microbial activator that activates useful microorganisms in a sludge treatment tank 101. In the examples, a silicon sol obtained by dissolving a silicon-containing solute obtained by mixing and heat-treating a silicon-containing substance and an alkaline substance in an acid solvent is used as the microbial activator. This silicon sol is only required to activate useful microorganisms, and the same silicon flocculant used in the waste water treatment tank 3 can be used.

The sludge treatment apparatus 100 contains calcium hydroxide (Ca (OH) ₂ ) as a pH adjuster in the sludge treatment tank 101. The sludge treatment apparatus 100 can maintain the temperature in the sludge treatment tank 101 at about 40 to 50 ° C. by the heat of hydration of calcium hydroxide. Therefore, the sludge treatment apparatus 100 does not require a heater or the like for maintaining the temperature in the sludge treatment tank 101, and the treatment cost can be reduced. As the pH adjuster, an alkaline agent such as caustic soda (NaOH), calcium carbonate (CaCO ₃ ), or lime can be used, but calcium hydroxide is used because heat of hydration can be used. It is preferable.

  In the embodiment, the active oxygen supply device 103 is installed in the air passage 141 and configured to supply active oxygen into the sludge treatment tank 101. The active oxygen supply device 103 includes a blower path 141 for sending air into the sludge treatment tank 101, a magnetic field generating mechanism for generating a magnetic field in the blower path 141, and an electron generating mechanism for emitting electrons into the blower path 141. .

  As shown in FIGS. 7 and 8, the active oxygen supply device 103 includes a magnetic field generation mechanism that generates a magnetic field in the air passage 141 that sends air into the sludge treatment tank 101, and an air passage 141 that generates the magnetic field. The electron generating mechanism 132 emits electrons in a direction non-parallel to the magnetic field direction. In the illustrated embodiment, the magnetic field generating mechanism includes an electromagnetic coil 133 that generates a static magnetic field in the same direction as the blowing direction. The electron generating mechanism 132 includes a discharge needle 132b disposed at a predetermined angle with respect to the magnetic field direction and a facing electrode 132c that is a counter electrode.

  As shown in FIG. 8, the electron generation mechanism 132 is provided adjacent to the upstream side of the electromagnetic coil 133 in the middle of the air passage 141. The electron generating mechanism 132 has a cylindrical air supply tube 132a formed of a non-conductive synthetic resin, and a discharge in which the needle tip is arranged in the air supply direction (arrow direction in the figure) inside the air supply tube 132a. The needle 132b and an annular facing electrode 132c disposed on the inner periphery of the air supply tube 132a at a position facing the needle tip of the discharge needle 132b at a predetermined angle with respect to the magnetic field direction. As shown in FIG. 7, the high-voltage power supply 138 applies a high voltage of several thousand volts to the discharge needle 132b, and electrons are emitted at a predetermined angle with respect to the magnetic field direction from the needle tip of the discharge needle 132b toward the facing electrode 132c. Can be emitted.

  As shown in FIGS. 7 and 8, the magnetic field generation mechanism includes an electromagnetic coil 133 and a current supply mechanism 137 that supplies a direct current to the electromagnetic coil 133. The electromagnetic coil 133 is adjacent to the electron generating mechanism 132 downstream in the air blowing direction, and is wound around the nonmagnetic tube 131 made of a nonmagnetic material along the circumferential direction. The electromagnetic coil 133 is preferably wound around a bobbin formed of a nonmagnetic metal having good thermal conductivity, such as copper, aluminum, tin, brass, zinc, titanium, or the like.

The electron generating mechanism 132 is preferably configured to emit electrons in a direction covering the radius of the electromagnetic coil 133. In the illustrated embodiment, the electron generating mechanism 132 is provided with a facing electrode 132c slightly larger in diameter than the radius of the electromagnetic coil 133 adjacent to the entrance of the electromagnetic coil 133, and from the needle tip of the discharge needle 132b to the electromagnetic coil. Electrons are emitted toward the facing electrode 132c covering the radius of 133. Electrons radiated at a predetermined angle with respect to the magnetic field direction pass through the electromagnetic coil 133 while spirally moving by Lorentz force, and excite ground-state triplet oxygen ( ³ O ₂ ) to a singlet state. , Electrons can be added to produce a superoxide anion (O ₂ ⁻ ).

The active oxygen supply device 3 is not limited to the structure of the embodiment, superoxide anion (O 2 ^_-) active oxygen containing it is also possible to use other devices capable of supplying. The discharge side of the active oxygen supply device 103 is connected to an air supply pipe 144 disposed in the sludge treatment tank 101 so that active oxygen having a short life can be efficiently supplied into the sludge treatment tank 101. It is. The sludge treatment apparatus 100 may be configured not to include the active oxygen supply apparatus 103.

The blower 142 is configured to send a large amount of air to the active oxygen supply device 103 through the air blowing path 141 and to blow superoxide anion (O ₂ ⁻ ) generated in the active oxygen supply device 103 into the sludge treatment tank 101. . The oxygen molecules sent into the electromagnetic coil 133 are ground state triplet oxygen ( ³ O ₂ ), and have two unpaired electrons. In the triplet oxygen ( ³ O ₂ ), the electron spin direction in the molecule is aligned in a constant direction by the static magnetic field in the electromagnetic coil 133. Then, unpaired electrons of triplet oxygen ^{(3 O} _2), when the spin direction is changed by a magnetic field electrons spiral motion occurs, is excited to singlet oxygen ^{(1 O} _2). Since this singlet oxygen ( ¹ O ₂ ) is an oxygen molecule to which electrons are easily added, the direction of the electron spin is aligned, and the electrons in spiral motion are added to generate a superoxide anion (O ₂ ⁻ ). can do.

  In the embodiment, the sludge treatment tank 101 contains an SOD-producing microorganism that produces superoxide dismutase (hereinafter referred to as “SOD”), an aqueous solution that supplies a metal ion that causes a Fenton reaction, a metal, or a metal compound. It is.

  The microorganism that can be used as the SOD-producing microorganism is not particularly limited as long as it can produce SOD. For example, photosynthetic bacteria, in particular, red bacteria (Proteobacteria) are preferable because they can supply more SOD and decompose organic substances contained in sludge.

  Examples of red bacteria include alpha proteobacteria, beta proteobacteria, and gamma proteobacteria. Examples of Rhodopseudomonas, Rhodospirillum, Rhodobacter, and Ectothiorhodospira genus, especially Rhodobacter sphaeroacter Rdobacter R capsulatus, Rhodospirillum rubrum, Rhodopseudomonas palustris, Ectothiorhodospira shaposhnikovii (Ectothiorhodospira vacuolata), Ectothiorhodospira mobilis, Ectothiorhodospira halophila can be used.

  Examples of available strains include S, IL106, IFO12203, KA38, NR3, ATCC17023, NI17, NI20, P2, and MC9R for Rhodobacter sphaeroides, and MS9R for Rhodobacter capsulatus. For example, G-9BM and IFO3986 strains can be exemplified for Rhodospirillum rubrum, ATCC17001 strain, SA37 strain, NIV2 strain, and DIII4 strain can be exemplified for Rhodopseudomonas palustris, and Ectothiorhodospira shaposhnikovii (Ectothiorhodospira shaposhnikovlat) The ATCC 31751 strain can be exemplified, the Ectothiorhodospira mobilis can be exemplified by the NI8 strain, and the Ectothiorhodospira halophila can be exemplified by the H16 strain. Bets are possible. Moreover, as long as SOD is produced, one or more kinds of various microorganisms may be included, and a mixture of plural kinds may be used.

  Useful microorganisms including these SOD-producing microorganisms can be continuously supplied to the sludge treatment tank 101 by being added to the wastewater treatment tank 3 so as to be contained in the residual sludge discharged from the sludge discharge mechanism 6. .

  The sludge treatment tank 101 preferably contains one or more auxiliary agents selected from the group of copper (Cu), zinc (Zn), and manganese (Mn). These adjuvants can assist SOD producing microorganisms to produce SOD. These adjuvants can also be accommodated in the sludge treatment tank 101 as compounds, and can also be contained in the sludge treatment tank 101 by being included in a carrier or added to a microbial activator. In addition, SOD is not limited to what is supplied from the SOD production microbe accommodated in the sludge processing tank 101 like an Example, It is also possible to store SOD directly in the sludge processing tank 101. FIG.

Since the metal ion accommodated in the sludge treatment tank 101 to cause the Fenton reaction has a strong force to cause the Fenton reaction, it is a divalent iron ion (Fe ²⁺ ) and / or a monovalent copper ion (Cu ⁺ ). Preferably there is. This metal ion can be supplied by accommodating a divalent iron compound or a monovalent copper compound in the sludge treatment tank 101. Moreover, this metal ion can also be accommodated in the sludge processing tank 101 as aqueous solution, and can also be included in a microbial activator. Examples of divalent iron compounds include iron sulfate (II) [FeSO ₄ ], potassium hexacyanoferrate (II) (K ₄ [Fe (CN) ₆ ]), iron sulfide (II) [FeS], and the like. Can be mentioned.

SOD produced by the SOD producing microorganism decomposes the superoxide anion (O ₂ ⁻ ) supplied from the active oxygen supply device 103 into hydrogen peroxide (H ₂ O ₂ ) and oxygen (O ₂ ). This hydrogen peroxide (H ₂ O ₂ ) is decomposed into a hydroxy radical (.OH) and a hydroxy ion (OH ⁻ ) by a reaction of the following formula by a divalent iron ion (Fe ²⁺ ) causing a Fenton reaction. .
H ₂ O ₂ + Fe ²⁺ → OH + OH ⁻ + Fe ³⁺ (Fenton reaction)

In addition, trivalent iron ions (Fe ³⁺ ) generated from divalent iron ions (Fe ²⁺ ) by the Fenton reaction are expressed by the following formula by the superoxide anion (O ₂ ⁻ ) supplied from the active oxygen supply device 103. By this reaction, it is reduced to divalent iron ions (Fe ²⁺ ). The reduced divalent iron ion (Fe ²⁺ ) can cause the Fenton reaction again.
O ₂ ⁻ + Fe ³⁺ → O ₂ + Fe ²⁺ (Haber-Weiss reaction)

This hydroxy radical (.OH) is a kind of active oxygen having the strongest oxidizing power, and can decompose all organic substances such as carbohydrates, proteins and lipids. This sludge treatment apparatus 100 has a very strong oxidizing power and generates hydroxy radicals (.OH) having a short life of 1/1 million seconds in the sludge treatment tank 101, so that sludge that is difficult to decompose is also reliably oxidized. Can be disassembled. Furthermore, superoxide anion remaining without being degraded by SOD (O 2 ^_-) or from other active oxygen also can oxidize the decomposition of sludge, can be eliminated reliably decompose the sludge.

The active oxygen supply device 103 may be provided in an air supply pipe that sends compressed air to the wastewater treatment tank 3 to supply active oxygen from the aeration device 31 to the wastewater treatment tank 3. In this case, SOD-producing microorganisms such as red bacteria are added to the wastewater treatment tank 3 as well as divalent iron ions (Fe ²⁺ ) or monovalent copper ions (Cu ⁺ ) that cause the Fenton reaction. deep.

  The deodorization apparatus 105 includes a deodorization tower 151 that deodorizes the exhaust discharged from the sludge treatment tank 101, an exhaust port 153 that discharges the exhaust deodorized by the deodorization tower 151, and a drain 154. Exhaust gas discharged from the sludge treatment tank 101 is guided to the deodorization tower 151 through the exhaust pipe 150. The deodorizing tower 151 contains a deodorizing agent such as activated carbon and a deodorizing liquid, and can deodorize exhaust gas sent from the exhaust pipe 150. An exhaust blower 152 is provided at the exhaust port 153 so that the exhaust deodorized by the deodorizing tower 151 is discharged. The drain 154 is provided for discharging liquid such as moisture contained in the exhaust gas. Further, the deodorizing apparatus 105 can also directly discharge the exhaust gas from the exhaust pipe 150 when the exhaust from the sludge treatment tank 101 does not have odor.

  In the illustrated embodiment, the sludge treatment apparatus 100 includes, in a sludge treatment tank 101, a carrier supporting microorganisms, one or more useful microorganisms selected from the group of photosynthetic bacteria, Bacillus bacteria, lactic acid bacteria, and yeast, and SOD. It contains production microorganisms, microbial activators that activate these useful microorganisms, pH adjusters, and divalent iron ions that cause the Fenton reaction, each in the required amount depending on the sludge treatment capacity. It is.

  As shown in Table 2, the sludge treatment apparatus 100 having a processing capacity of 15 kg / day is a culture of useful microorganisms in a sludge treatment tank 101 with 150 L (liter) of rice husk as a carrier and Bacillus bacteria as dominant species. 2 L of the liquid, 2 L of a culture solution of useful microorganisms that are predominantly photosynthetic bacteria including red bacteria that are SOD-producing microorganisms (20 L diluted 10 times), and 0.75 L (10 times) of the microbial activator 7.5L), 2 kg of calcium hydroxide (slaked lime) as a pH adjuster, and 0.30 L (20 times higher) of iron (II) sulfate [ferrous sulfate] solution as divalent iron ions Diluted and stored 6L). Moreover, the sludge treatment apparatus 100 accommodates in the sludge treatment tank 101 1 or 2 or more adjuvants chosen from the group of magnesium aqueous solution and copper, zinc, and manganese as needed.

DESCRIPTION OF SYMBOLS 1 Raw water tank 2 Sedimentation tank 3 Wastewater treatment tank 4 Drainage channel 4a Upward flow path part 4b Downward flow path part 4c Upper folding part 4d Lower folding part 5 Flat membrane tank 6 Sludge discharge mechanism 10 Wastewater treatment apparatus 11 Aeration apparatus 12 Water supply pipe DESCRIPTION OF SYMBOLS 13 Exhaust pipe 21 Filtration membrane 22 Water supply pipe 31 Aeration apparatus 41 Narrow part 42 Change part 43 Intake port 44 Outlet 45 Sludge discharge pipe 46 Valve 51 Aeration apparatus 52 Drain tank 53 Water supply pipe 54 Backwash water pipe 61 Sludge conveyance path 62 Screw 63 Motor 64 Sludge discharge pipe 65 Valve 100 Sludge treatment device 101 Sludge treatment tank 102 Stirring member 103 Active oxygen supply device 104 Blower mechanism 105 Deodorizer 111 Input port 112 Discharge port 120 Drive mechanism 121 Stirring shaft 123 Stirring claw 124 Motor 125 Drive Sprocket 126 endless chain 127 driven sprocket 1 DESCRIPTION OF SYMBOLS 1 Nonmagnetic pipe | tube 132 Electron generating mechanism 132a Air supply pipe 132b Discharge needle 132c Face-to-face electrode 133 Electromagnetic coil 137 Current supply mechanism 138 High-pressure power supply 141 Air supply path 142 Blower 143 Circulation path 144 Air supply pipe 145 Air supply port 150 Exhaust pipe 151 Deodorizing tower 152 Exhaust Blower 153 Exhaust port 154 Drain

Claims (16)

An organic wastewater treatment apparatus having a wastewater treatment tank for purifying organic wastewater containing organic matter using useful microorganisms and a flocculant,
A drainage channel for draining treated water from the wastewater treatment tank is arranged meandering up and down, and a narrower cross-sectional area is narrowed in a part of the upward channel part of the drainage channel than the other part of the upward channel part Organic wastewater treatment equipment that forms the road. The organic waste water treatment apparatus of Claim 1 which formed the narrow path part which narrowed cross-sectional area in the part of the downward flow path part of the said drainage channel from the other part of the said downward flow path part .

  The organic waste water treatment apparatus according to claim 2, wherein the narrow path portion is formed below the upward flow path portion and the downward flow path portion of the drainage channel.   The organic wastewater treatment apparatus according to any one of claims 1 to 3, wherein a cross-sectional area of the narrow path portion is 10% to 70% of a cross-sectional area of the drainage path excluding the narrow path portion.   The organic waste water treatment apparatus as described in any one of Claims 1 thru | or 4 which has arrange | positioned the upper side folding | returning part of the said drainage channel in the position lower than the water intake from the said wastewater treatment tank to the said drainage channel.   The drainage channel is arranged by meandering a plurality of times, and the plurality of upper folded portions are arranged so as to become lower in order from the intake port side toward the discharge port side. Organic wastewater treatment equipment described in 1.   The organic waste water treatment apparatus according to any one of claims 1 to 6, further comprising a filtration device that filters the treated water discharged from the drainage channel.   The organic waste water treatment apparatus according to any one of claims 1 to 7, wherein the flocculant is a silicon flocculant in which a silicon-containing solute obtained by mixing and heat-treating a silicon-containing substance and an alkaline substance is dissolved in an acid solvent.   The organic waste water treatment apparatus according to claim 8, wherein the silicon-containing solute is heat-treated at a temperature not higher than a thermal melting point of the silicon-containing substance.   The organic wastewater treatment apparatus according to claim 8 or 9, wherein the alkaline substance is made of calcium carbonate or lime.   The organic waste water treatment apparatus according to any one of claims 8 to 10, wherein the silicon-containing substance contains magnesium or a magnesium compound.   The organic wastewater treatment apparatus according to claim 8, wherein the silicon-containing solute is composed of one or more substances selected from the group consisting of cement, cement intermediates, blast furnace slag, and coal ash.   The organic waste water treatment apparatus according to any one of claims 8 to 12, wherein the acid solvent comprises dilute hydrochloric acid.   The organic wastewater treatment apparatus according to any one of claims 8 to 13, wherein the acid solvent contains one or more gelation inhibitors selected from the group consisting of acetic acid, ammonium acetate, and ammonium chloride.   The organic waste water treatment apparatus as described in any one of Claims 1 thru | or 14 provided with the sludge discharge mechanism which discharges sludge in the lower side folding | returning part of the said drainage channel. Containing a carrier supporting microorganisms, and equipped with a sludge treatment tank for decomposing the discharged sludge by microorganisms;
The sludge treatment tank has an agitating member for agitating and mixing the carrier and the sludge, and also activates one or more useful microorganisms selected from the group of photosynthetic bacteria, Bacillus bacteria, lactic acid bacteria, and yeast, and the useful microorganisms. The organic waste water treatment apparatus according to claim 15, wherein a microbial activator to be converted is contained and the sludge is decomposed.