JPS605288A - Method and apparatus for promoting simple treatment of various household waste water - Google Patents

Abstract

PURPOSE:To promote the biochemical oxidizing action of various waste waters, by such a simple method that hot waste water and the other various waste waters in household waste water are induced to a heat insulating measure to be stored therein and the heat energy of hot waste water is transmitted to various waste waters. CONSTITUTION:Drain pipes 4 for household various waste waters from a kitchen K, a washing lavatory S or the like are provided so as to reach a public water area such as a road culvert D by piping work in such a state that sewage measures b1, b2... are arranged to required places. In place of one sewage measure in this arranged pipe system, a heat insulating measure 1 provided with a heat insulating material 2 is provided. The draw-in port 41 of the drain pipe 4 from the hot waste water source such as a bathroom F and the draw-in ports 51 of the other various waste waters are separately confronted to the heat insulating measure 1 to induce the hot waste water and the various waste waters in separate systems. The heat energy possessed by the hot waste water is directly transmitted to the various waste waters in the heat insulating measure 1. Biochemical oxidizing action is promoted during the stay of the waste waters in the heat insulating measure 1 and various waste waters of which the BOD values are lowered are discharged from the drain pipes 4.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method particularly effective in cold regions for easily treating and promoting the sedimentation and separation effects of domestic gray water discharged into public water bodies such as road gutters; It relates to the processing equipment necessary for its implementation.

In cities, towns and villages with housing complexes around large cities where urban planning has been advanced, huge amounts of household wastewater such as filth is concentrated in specific areas and complete purification treatment is carried out using modern sewage treatment technology. However, when we look at the treatment status of domestic wastewater in other regions, we find that even households that take conscientious considerations end up using several sewage basins in the process from around buildings to roadside gutters. By simply conducting biochemical oxidation treatment from sediment separation in these sewage basins, it is not possible to adopt more effective means to more effectively remove substances that are the source of filth. The reality is that it is almost never seen. As a result, filth practically flows into public water bodies and accumulates there, impairing the drainage effect, not only causing flooding, but also making the living environment unsanitary and inhospitable. 0 One of the major reasons for this situation is the need to promote effective treatment that can be easily and inexpensively carried out on each household premises before household wastewater reaches public water bodies. It is thought that the actual situation is that the method and equipment for the same have not been developed and put into practical use.

Therefore, in order to deal with these situations, this invention has been devoted to continuous development and research for many years, and as a result, we have completed and put into practical use a simple sewage treatment method and a device for it, as detailed below. This is what I came to do.

The aim is to reduce the so-called BOD (Biochemical Oxygen Demand) value as low as possible at the time it reaches the water body, and it focuses on the fact that household wastewater contains warm wastewater and other types of wastewater. Warm domestic wastewater, mainly wastewater from bathrooms, is not routed separately from other miscellaneous wastewater into a concrete basin or other heat-insulating basin that has a relatively large capacity and is also equipped with heat-insulating material. By directly or indirectly transmitting the thermal energy of warm wastewater to miscellaneous wastewater other than hot wastewater in the thermal insulation basin, the biochemical oxidation effect of domestic miscellaneous wastewater other than hot wastewater is promoted, and the heat energy is This is a simple method for promoting the treatment of household wastewater, which is characterized by reducing the BOD value as much as possible before it reaches the water area. As mentioned above, the hot wastewater included in household wastewater is mainly assumed to be wastewater from bathrooms.
First, a large amount of this is emitted from a single location,
This is due to the fact that it is easy to separate from other miscellaneous wastewater and is wastewater with relatively little sediment.Of course, wastewater from other air conditioning facilities is also suitable for the same reasons, as well as kitchen wastewater. It is desirable to use warm wastewater as much as possible from the wastewater discharged from other plants, etc., if it is separable. Therefore, even though warm wastewater and other wastewater are referred to, warm wastewater that is difficult to separate from miscellaneous wastewater is treated as wastewater other than warm wastewater in this invention.

Normally, when the water temperature drops below 5 degrees Celsius, the life activities of microorganisms significantly stagnate, which impedes the biochemical purification function and causes sedimentation and separation of sewage in the sewage basin. The sludge is not oxidized or putrefied, and eventually flows out into public water bodies such as road gutters, which has a negative impact on the living environment. It is known that, especially in cold regions, this tendency continues for a long period of time, resulting in public water bodies becoming increasingly polluted. However, in those areas where modern sewage treatment facilities are not fully equipped, even if the cause is known, each household has to install a digestion tank like the one used in the sewage treatment facilities mentioned in Section 2. It is impossible to hope for the use of expensive and sophisticated facilities that install a heat exchanger inside and adjust the temperature to a constant humidity according to the temperature range suitable for bacterial growth. Therefore, in this invention, warm wastewater in domestic miscellaneous wastewater is used as a thermal energy source, but small sewage basins (approximately 600 to 400 square meters) are installed at key points. In a drainage system that connects them with a single drainage pipe and guides them to a public water area, for example, even if a large amount of warm wastewater is discharged from a bathroom, etc., it will be mixed with the miscellaneous wastewater of the pond. Because it is small and has a small retention volume, it cools down quickly and cannot contribute in any way to the biochemical oxidation effect that oxidizes and rots the sludge such as sediment and separated filth. In addition, hot wastewater from bathrooms, which is the most usable hot wastewater source, flows into the large tank at once, so if it is in a relatively small-scale sewage basin, it is necessary to remove the sedimentation and separated sludge. It is so harmful that it becomes agitated, floats, oxidizes, and even spills into public water bodies before it decomposes. Therefore, this invention provides a drainage system for warm wastewater that is separate from the conventional drainage system, and realizes a relatively large-capacity heat retention basin necessary to extend the retention time of hot wastewater, thereby making it possible to improve the efficiency of household use. This system is designed to make it possible to utilize warm wastewater in the combined wastewater as an effective source of thermal energy.

In order to adopt the simple domestic and wastewater treatment method of this invention in each household, it is necessary to connect several conventional small-sized sewage basins into one.
In places where system drainage systems have been implemented, heat insulating materials have been added to the parts of the drainage system closest to the hot wastewater source (for example, bathrooms, etc.) in advance or through additional construction to provide moisture retention. It is possible to install a heat-retaining basin that uses a combination of wood and to install a drainage pipe from the warm wastewater source to the heat-retaining basin in a separate system from the previous drainage system. be. In addition, even in households that do not have a sewage basin at all and discharge domestic wastewater directly into public water bodies, this can be carried out at the same cost as in Section -I- until it reaches the public water area. . Note that the minimum size of a heat-insulating box in which a heat-insulating material is used is a large hole with a side of about 600 mm.

As one of the most efficient implementations of the above-mentioned method for promoting the simple treatment of household wastewater, the following method is adopted: A similar method has been completed.

In other words, a sewage basin consisting of a partition II wall that also serves as a heat exchange wall is formed independently within a heat insulation basin formed to a predetermined scale using a heat insulating material, or an existing sewage basin or sewage treatment tank is used. These sewage basins and sewage treatment tanks will be used for household wastewater other than heated wastewater, and the heat-retaining basins other than those divided by the sewage basins and sewage treatment tanks will be used for heated wastewater. The hot wastewater flows in and stays in separate systems, and the warm wastewater and other miscellaneous wastewater that flow in and stay in the heat-insulating box separately flow out of the heat-insulating box, and the warm wastewater stays in the heat-insulating box. This is a simple method for promoting the treatment of household wastewater, which creates a difference in the residence time between hot wastewater and other miscellaneous wastewater, and indirectly transfers the thermal energy of hot wastewater to miscellaneous wastewater other than hot wastewater.

In this method, warm wastewater and other miscellaneous wastewater are separated in the heat-retaining tank by a heat exchange wall and isolation wall, so that a predetermined volume of hot wastewater always remains in the heat-retaining tank and the predetermined heat is maintained. The biochemical oxidation effect of sludge is extremely efficient because it conserves energy and prevents the inflow of warm wastewater from causing other miscellaneous wastewater to settle, and the separated sludge to be stirred and suspended. As a result, the BOD value that reaches public water bodies can be reduced as much as possible.

Representative embodiments for carrying out the method as described above are shown in FIGS. 1-6.

First, as can be understood from the layout shown in Figure 1, there is a drain pipe 4 in the kitchen for household miscellaneous water from the laundry/washroom S, etc.
As before, sewage basins b1. b2...
-1 Piping and installation to public water bodies such as road ditches. Normally, this piping system is used not only in newly constructed buildings but also in the majority of already constructed buildings, and therefore does not require any special new technical consideration.

In this example, one sewage basin B in this piping system (although there is no particular limitation on which one it has to be, it is closer to the hot waste water source due to thermal efficiency and piping problems), Between the sewage basin B and the sewage basin B5, where the sewage basin b4 (not shown) would have been placed if it were not according to the present invention), a moisturizing basin 1 in which a heat insulating material 2 is used together is installed. Set up.

This heat insulating material 1 is constructed from a warm wastewater source (
In the embodiment shown in FIG. 1, the inlet 4'l of the drain pipe 4 from (under the bathroom) and the inlet 5 of the drain pipe 5 for other miscellaneous waste water.
1 and 1 separately in the heat insulating material 1, so that the warm wastewater and other miscellaneous wastewater are guided into the heat insulating material 1 through separate systems, and the warm wastewater and other miscellaneous wastewater are separated into the heat insulating material 1 for the first time. The wastewater is mixed directly with the hot wastewater so that the thermal energy of the hot wastewater is transferred to other miscellaneous wastewater. Then, this thermal energy remains for a relatively long time in the heat insulating material 1 of a predetermined size whose heat retaining properties are improved by using the heat insulating material 2, promotes biochemical oxidation, and is drained from the drain pipe 4. Miscellaneous wastewater B
Although a structure that lowers the OD value is the simplest, the retention period of miscellaneous wastewater depends on the relationship between the amount of miscellaneous wastewater discharged and the capacity of the heat insulating material 1. When the amount of other miscellaneous wastewater is large compared to the amount of other miscellaneous wastewater, it is expected that the thermal energy of the heated wastewater will be difficult to utilize effectively because the heated wastewater will flow out of the moisturizing ts.

Therefore, it may be necessary to employ the embodiments shown in FIGS. 4 and 5 as a device for more effectively carrying out the method for promoting the simple treatment of non-domestic wastewater of the present invention. That is, the structure of the heat insulating material 1 and [7] A concrete box whose outer surface is covered with a synthetic resin foam such as Styrofoam or other heat insulating material 2, and the size of which is approximately 600 square cubes, is required. (Many of the sewage basins that have been used so far are of the shape of a zoom square cube).

On the inside, an independent sewage basin is formed by a heat exchange wall and isolation wall B made of corrugated stainless steel plates, plastic corrugated plates, etc., and miscellaneous wastewater other than hot wastewater is stored inside the sewage basin. The inside of the heat insulating material 1 outside the sewage basin is used as a warm wastewater retention tank 11 in which heated wastewater is retained. and,
In the sewage retention tank 12, the intake port 51 and the sweep-out port 52 of the drain pipe 5 for the kitchen, laundry, washroom, etc. are installed independently so that they do not communicate with the heated wastewater retention tank 11, and the heated wastewater is Retention tank 114 The inlet 41 and sweep-out port 42 of the drain pipe 4 from the bathroom F, which is a source of hot wastewater, are connected to the water retention tank 12.
Piping should be done independently, regardless of the In the illustrated embodiment, the auxiliary phase 6 is integrally formed on the downstream side of the heat insulating material 1, and after the drain pipes 5.4 on the side of each sweep-out port 52. , the conventional drain pipe 5 is connected to the auxiliary pipe 5, but the example is not necessarily limited to this example, and the auxiliary phase 6 is not provided, and each sweep port 52.
The drain pipes 5.4 on the 42 side can be connected to the downstream sewage basin B5 while remaining independent, or the drain pipes 5.4 on the 42 side can be connected directly to the public water area G. It's okay.

Still other embodiments are shown in FIGS. 6 and 7.

In this embodiment, the septic tank 7 is placed inside the heat insulating material 1,
The inside of the heat insulating material 1 remaining on the side 1 of the urine-urine septic tank 7 is designated as the heated wastewater retention tank 11, 11 is the urine-purifier δ water pipe inlet, 10 is the same sweep-out port, 14 is the foundation board such as cracked stone, 15 is Showing the tank fixings.

As can be understood from the above-mentioned embodiments, all of the devices required in step 2 of carrying out the method of the present invention can be easily installed without changing much from the installation situation of conventional sewage basins. Since it has a simple structure, it can be manufactured and sold at low cost, and it enables ordinary households to easily carry out the method for promoting the treatment of household wastewater without putting a large burden on them. In particular, the apparatus shown in FIGS. 4 and 5 allows the thermal energy of warm wastewater to be used more effectively, making it extremely effective for purifying public water bodies.

As mentioned above, the method and device for promoting the simple treatment of household miscellaneous wastewater of the present invention focuses on the thermal energy of hot wastewater, which is included in the miscellaneous wastewater that is casually discharged from the home, and uses it to transfer the heat energy to other miscellaneous wastewater. Because it can be used effectively to activate the biochemical oxidation effect of This does not make it difficult for ordinary households to adopt it, and there is no need to worry about regular maintenance costs, making it possible to make the living environment of an area extremely sanitary with only a small burden on each household. . It is particularly effective to use in regions where biochemical oxidation is temporarily slowed down, such as in cold regions, and it can also be used in other regions to further reduce the BOD value and minimize the occurrence of bad odors and pests. It is effective as a means and device.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show typical embodiments of the apparatus necessary to carry out the method of the present invention, and FIG. 1 shows a layout diagram,
FIG. 2 is a 14th view of the first embodiment, and FIG.
-A sectional view, FIG. 4 is a plan view according to another embodiment, and FIG.
The figure is a cross-sectional view from 1i1113 to I3, FIG. 6 is a plan view of another embodiment, and FIG. 7 is a cross-sectional view taken along the line C--C. 1...Heat insulation box, 2...Heat insulation material, Filter...Isolation wall that also serves as a heat exchange wall, 4...Drain pipe for guiding warm wastewater, 5...Drain pipe for other miscellaneous waste water, 6... Auxiliary box, 7... I
q4 Urine septic tank, b... conventional sewage basin, D... road side F: "i.

Claims (1)

[Scope of Claims] 1. Warm wastewater and other miscellaneous wastewater in household and wastewater are guided and retained in separate systems in a concrete basin or other heat-insulating basin having a relatively large capacity and also using a heat-insulating material. By transmitting the thermal energy of warm wastewater directly or indirectly to miscellaneous wastewater other than warm wastewater in the heat-retaining basin, the biochemical oxidation effect of household wastewater other than warm wastewater is promoted. A simple method for promoting the treatment of household wastewater. 2. Either form an independent sewage basin consisting of a heat exchange wall and isolation wall within the moisture retention basin, or install an existing sewage basin or sewage treatment tank independently, and these sewage basins or sewage treatment tanks Domestic wastewater other than heated wastewater, as well as heated wastewater that is not separated by the above-mentioned sewage basins and sewage treatment tanks, is allowed to flow into and remain in the heat retention basin in a separate system, and flow separately into the moisture retention basin. In this way, the warm wastewater that remains in the heat insulation tank and the other waste water are discharged separately from the heat insulation tank, and the retention time of the warm wastewater that remains in the heat insulation tank and the other waste water are made to differ. A method for promoting the simple treatment of household wastewater according to claim 1. 6. A sewage basin separated by a heat exchange wall and isolation wall is formed inside a heat-retaining basin such as a concrete basin of a predetermined size using heat insulating material, etc., and the inside of the sewage basin is used to store wastewater other than household heated wastewater. A sewage retention tank for retaining wastewater, and a warm wastewater retention tank for retaining household wet wastewater are formed inside the heat-retaining basin outside the sewage basin, and an inflow pipe and an outflow pipe are formed that independently communicate with each retention tank. , A treatment device for carrying out the method for promoting the simple treatment of domestic wastewater as set forth in claims 1 and 2.