JPS58189098A - Purifier for filthy water - Google Patents

Abstract

PURPOSE:To make the propagation of microbes excellent by managing the temp. of water for improving the efficiency of purification, by providing an aerobic purifier tank equipped with a heating means and a forcible fluidizing means in a line with an anaerobic purifier tank equipped with a heating means. CONSTITUTION:Raw water such as municipal waste water is introduced through a base pipe 6 along the arrow 22 and then reserved through water-supply pipes 3, 4 along the arrows 33, 34 in an anaerobic purifier tank 1. Hot water heated by a boiler 15 is sent through branched pipes 9, 10 and annular pipes 11, 12 and then returned through returning pipes 16, 17 to the boiler. By this circulation, the water to be treated in the purifier tank 1 is heated at a proper temp. of 30-40 deg.C. Thereafter, the water is transferred to an anaerobic purifier tank 2, and a supernatant liquid after being treated is introduced through an overflow pipe 44 into an aerobic purifier tank 22. In the purifier tank 22, a honeycomb core 24 is lowered into the water to be treated, so that fine solid matter can be treated by anaerobes inserted to the honeycomb core.

Description

Detailed Description of the Invention The present invention provides a treatment tank using anaerobic bacteria and a treatment tank using aerobic bacteria to perform treatment according to the amount of solids in raw water, and to control the water edge to allow microorganisms to grow. The present invention relates to a sewage purification device that aims to improve efficiency by improving water quality.

Conventionally, treatment using anaerobic bacteria has been proposed for the purification of wastewater containing a large amount of BOD and COD, but this method has the problem of requiring a relatively long residence time (for example, 10 days or more) and a large-capacity treatment tank. However, in recent years, it has been possible to promote the growth of anaerobic bacteria by inserting a filler into the treatment tank and to significantly shorten the residence time (for example, from J hours to 30 hours). Since it is not possible to release the momme (for example, BOI is before and after 100),
Research is underway to treat this aerobically and reduce the BOD to 70 or less before releasing it. As mentioned above, according to the integrated treatment system of anaerobic treatment and aerobic treatment, efficient and high-performance treatment cannot be expected unless the treatment capacity of both septic tanks becomes constant. The biggest factor that affects efficiency is temperature. For example, the throughput at a relatively low temperature (e.g., before /S°C) is lower than that at an appropriate temperature (e.g., 35°C).
It is known that the processing amount is less than h of the processing amount of
Furthermore, in anaerobic treatment, the temperature of raw water may rise due to fermentation, but in aerobic treatment, a natural rise in water temperature is not considered. Therefore, in treatment equipment that requires anaerobic treatment and aerobic treatment to be performed at the same water temperature, differences in treatment capacity will occur as the water temperature changes, making smooth integrated treatment difficult. .

However, in this invention, since a heating device is attached to the treatment tank, it is possible to adjust the temperature of the treated water to a constant temperature regardless of the outside temperature, which allows the equipment to operate at maximum capacity at all times. It has become possible to process sewage consistently and smoothly, and has succeeded in keeping the effluent at a level of cleanliness that is above the specified level at all times. A major feature of this invention is that the same processing capacity can be maintained regardless of the outside temperature. Another feature of the present invention is that ordinary costs are reduced by using a heat source (flammable gas) generated during processing or solar heat. Furthermore, another feature of the present invention is that during anaerobic treatment, a large number of bacteria are filled for implantation of anaerobic bacteria,
During aerobic treatment, Nicamcore was filled and treated water was circulated.

Next, embodiments of the invention will be described with reference to the accompanying drawings. Anaerobic treatment tanks /, 2 with funnel-shaped lower parts are installed in parallel, and raw water pipes 3, 2 are connected to the center of the anaerobic treatment tanks /, -.
Water pipes 3 and q are installed vertically, and the upper ends of the water pipes 3 and q are connected to the base pipe B via valves S, and the lower ends are opened to the lower part of each treatment tank. Hot water supply pipes 7 and g are loosely fitted into the vertical parts of the water supply pipes 3 and DA, respectively, and branch pipes 10 are connected to the water supply pipes 7 and 7 at a predetermined interval above and below, radially extending in the horizontal direction. The branch pipes 9 and 10 are connected by connecting pipes /3 and /q, and are connected by annular pipes // and /yu, with one connecting pipe /
3, the upper end of /q is connected to the return pipe /O, /7 to the boiler 15, and the upper end of the hot water supply pipe 7, g is connected to the hot water supply pipe /g from the boiler /S via pump /9. Ru. Said branch pipes 7.10, annular pipes //, /2 and connecting pipes /3, /
The inner gap of q is filled with a large number of fillers J (・
Ru.

The filling material 20 is an anaerobic bacteria settlement material having a maximum dimension of about 5 Crn and a minimum dimension of /Crn, such as a short tube shape, a spherical shape, a string shape, a rope shape, etc. It is filled so that it can move slightly within the position.

Each of the hot water pipes also serves as a support frame for the filler, and if necessary, a part of the hot water pipes can be closed and used exclusively for the support frame.

Next, an aerobic treatment tank 22 with a funnel-shaped lower part is installed adjacent to the anaerobic treatment tank 2, and an intermittent air pumping tube 3 is vertically installed in the middle heat section of the treatment tank. A honeycomb core is installed vertically on the outside of the water bottle 23 (with the center of the tube in the vertical direction). In addition, an annular hot water pipe 23 is laid in the lower part of the Nikum core 2q, and a hot water supply pipe U and a hot water discharge pipe 27 are connected to diametrically symmetrical positions of the annular hot water pipe J, respectively. In addition, an air chamber y g is provided at the lower part of the water pumping tube 23, and the air chamber rg is fitted with a crested outer tube y that maintains a predetermined distance from the outer wall of the water pumping tube 3. A partition tube 30 that divides the space between the outer wall of the water pumping tube 23 and the outer wall of the water pumping tube 23 into two is fitted to the inside of the outer tube 29, and the guide tube 3/
It consists of an air chamber with a passageway for inserting and fixing it.

The processing state of raw water will be explained based on the above-mentioned implementation device. In Figure 1, raw water (sewage such as urban wastewater or industrial wastewater, e.g. B01) is drawn from base pipe B as shown by arrow 3).
θ~several thousand) is sent by a pump (not shown). In this case, the concentration of raw water with a concentration higher than the predetermined concentration is adjusted in advance in a regulating tank, and relatively large solids are removed.

The raw water that has passed through the base pipe B is indicated by arrow 3, ? , 3// through water pipes 3 and q, and from the bottom as shown by the arrow, ? ,? , -5
Although it takes up to 1S days for si(17), in this invention, since a filler is used, it is possible to obtain a level of reproduction sufficient to reach the predetermined purpose in 7 to 2 days. Therefore, it takes about /θ days for the anaerobic bacteria to fully settle on the filling material (initial), but once sufficient implantation has been achieved, it is continuously can be processed. Once the continuous treatment is started in the above, in principle, the raw water is led to the treatment tank/ only (by operating the valve S), and the water is sent into the treatment tank via the water supply pipe G via the overflow pipe 3S of the treatment tank/. do. Therefore, the residence time in the treatment tank can be set from 1 hour to 29 hours. On the other hand, the hot water heated by the boiler 15 is sent to the branch pipe 9, /θ as shown by arrows 3 O and 37 via the hot water supply pipe 7 and g, and returns through the annular pipes /l and /ko to the return pipe /6. , /7, and is returned to the boiler, and through such circulation, the water to be treated in the treatment tank is heated to an appropriate temperature. This temperature is the optimum temperature for the growth of anaerobic bacteria (30°C to 10°C), and the pump I
The temperature in the tank is controlled by starting or stopping f. In addition, if a methane-producing bacterium is used as the anaerobic bacterium, the methane gas generated during the treatment is taken out through the sampling pipe 39 and a part of it is sent to the boiler/! Since the temperature can be controlled using self-generated fuel, running costs for wastewater treatment can be reduced.

As mentioned above, if the temperature inside the treatment tank is maintained at a constant temperature suitable for anaerobic bacteria, the bacteria will grow very well and the residence time can be shortened (for example, 72 hours or less), making it possible to drain the water from the overflow pipe. It is also possible to extend the residence time by guiding the removed water to the bottom of the treatment tank through the water pipe 3 and forcibly circulating the water in the treatment tank. In the figure, 93 is a check valve. As described above, the water to be treated that has been treated in the treatment tank / is transferred to the treatment tank A, and the supernatant water that has been treated in the treatment tank A is around l-301) 10θ to -00 as shown by the arrow in the image of the overflow pipe. Show! Enter the aerobic treatment tank 22 as shown in i. In this treatment tank 22, when pressurized air is supplied into the air chamber 2g from the air hose, the water in the air chamber 2g gradually descends, and the water surface reaches the chain line q? When it descends to the position, the air in the air chamber is discharged all at once into the water pump as shown by arrow 'Ig, Q9.50. In this case, the air rises as a group as shown in the figure S/, so that the water below flows into the hole 5 of the water pump.
．． 2 as shown by arrow S3, rises as shown by arrow 5Z, and scatters from the upper end of the water pump as shown by arrow 5S. Therefore, the water in the treatment tank rises in the center and descends inside the honeycomb core as shown by the arrow, eventually causing convection, and the aerobic bacteria that have settled on the honeycomb core remove fine solids. Be able to handle it. In this case, the boiler/,! Since hot water is sent to the annular hot water pipe 5, the inside of the treatment tank can be maintained at a predetermined constant temperature, and the propagation of aerobic bacteria can be maintained at its best. In the figure, 57.5g is a valve installed in the hot water pipe. - In the above embodiment, the anaerobic treatment tank (
The flammable gas generated by the methane-producing bacteria may be used in only one treatment tank is burned in the combustor of the boiler, but it is also possible to use hot water heated during the day using a solar water heater (O in the figure is connected to the suction side of the pump 3, and O is connected to the return pipe 3q.

If treated in an aerobic septic tank as shown in F, BOI)
It was observed that λθ0 decreased to 10 or less. That is, according to the present invention, an anaerobic septic tank equipped with a heating device and an aerobic septic tank equipped with a heating device are installed in parallel to perform purification treatment in sequence.
30 Even wastewater with a high D value is continuously purified,
Moreover, constant temperature treatment has the effect of allowing microorganisms to always exhibit their highest efficiency. Therefore, instead of 70 to 73 days of sewage retention in the past, it is now possible to achieve the desired purpose with retention of less than 1 day, making it possible to treat a large amount of sewage with a relatively small volume. . Furthermore, since anaerobic bacteria and aerobic bacteria are used, and flammable gas generated during heating is used or solar heat is used for heating, running costs can be significantly reduced.

In the embodiment, two anaerobic treatment tanks and one aerobic treatment tank are used as centers, but the invention is not necessarily limited to such a center.

[Brief explanation of the drawing]

FIG. 1 is a partially omitted plan view of an embodiment of the present invention, FIG. Ω is a sectional view, and FIG. 3 is a perspective view of a solar slurry. /, λ...Anaerobic treatment tank 3, G...Water pipe 7, g@
Number hot water supply pipe wo, 10... Branch pipe //, /2II...
Annular pipe /3, /qII11 connecting pipe /6, /7-
・Return pipe 15...Boiler 7g...Hot water pipe/9
@ Exposure pump Yu 0 @ Lu Filling material Yul... Net n... Aerobic treatment tank 23... Water pump J... Honeycomb core λS... Annular hot water pipe 2g... Air chamber Patent applicant Kaiyo Kogyo Co., Ltd. Agent Masatsugu Suzuki

Claims (1)

[Claims] A sewage purification device characterized in that an anaerobic septic tank equipped with a 17III deep water device is connected to an aerobic septic tank equipped with a heating device, and the aerobic septic tank is equipped with a forced flow device. 7. A sewage purification device according to claim 1, in which the heating device combines a hot water pipe laid in a septic tank and a heating and flow control device for hot water circulating in the reservoir pipe, 7. Forced flow. The device is a sewage purification device (q) according to claim 7, in which a device for intermittently sending air is installed at the bottom of an upright water pump.An anaerobic septic tank has a filling material made of a large number of solids in a funnel-shaped tank. The sewage purification device S according to claim 1 is filled. The sewage purification device 6 according to claim 1, wherein the aerobic septic tank has a filler made of honeycomb core vertically arranged in the middle of the tank. The heating device Sewage purification device 7 according to claim 1, in which heating of hot water is generated in an anaerobic septic tank or a boiler using combustion gas as fuel; hot water in the heating device is heated by a solar water reservoir. Claim 2
Sewage purification equipment described in section