JPH0720585B2 - Soil treatment equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a soil treatment device used for treatment of sewage and the like, and relates to a basin for receiving wastewater discharged from a pretreatment device, and a sprinkler pipe having a downward slope toward the basin. The drainage inside the basin is pumped up by a pump and supplied to the high end of the sprinkler pipe, activating the inside of the soil treatment part like a mountain stream and improving the soil treatment action. It was made to let.

2. Description of the Related Art A general structure of a conventional soil treatment device is, as shown in FIG. 5, a sprinkler pipe 2 having a large number of holes near the surface layer of a soil layer 1.
Is arranged substantially horizontally, and the surrounding area is surrounded by the purification material 3, the gravel layer 4, and the like. Reference numeral 5 is a basin, 6 is an inflow pipe for waste water such as gray water, 7 is embankment, and 8 is a net.

The sewage that has flowed into the basin 5 from the sewage inflow pipe 6 enters the water sprinkling pipe 2 and is sprinkled from the water sprinkling pipe 2 to the outside. The sewage sprinkled from the sprinkling pipe 2 to the outside is first subjected to a purifying action by the purifying material 3 filled around the sprinkling pipe 2, and the ammonia nitrogen, phosphorus, etc. contained in the sewage are adsorbed and purified. Part of the moisture that has passed through the gravel layer 4 due to the purification effect of the purification material 3 diffuses into the upper soil layer 1.

Moisture that has moved to the soil layer 1 contains special organic nitrogen sources, vitamins, micronutrients, microgrowing factors, etc., and is a nutrient source that microorganisms do not want. Microorganisms have good light, air, and temperature. Proliferates rapidly under various conditions. The sewage is converted into capillary water by the activity of the microorganisms, and evaporates and diffuses between the soil particles forming the soil layer 1 from the dark side of the water to the thin side, that is, in the upward direction at a high speed. Since the capillary water moving between soil particles is already cleansed, in the aggregate-structured soil layer, vaporization is carried out in a multi-step and multi-layer manner similar to that of a radiator of an automobile, and is rapidly evaporated and diffused.

Problems to be Solved by the Invention As described above, this type of soil treatment device skillfully utilizes the function of the microorganisms that survive in the soil layer 1 to make the capillary water from the sprinkler pipe 2 into the soil layer 1 larger. To purify sewage, evaporate and diffuse it, and treat it. Therefore, in this type of device, it is extremely important to consider that the physiological activities of the microorganisms that survive in the soil layer 1 are sufficiently performed. However, in the conventional soil treatment device, since the water sprinkling pipe 2 is arranged substantially horizontally inside the soil layer 1,
The flow in the sprinkling pipe 2 is poor and it is easy to become dead water. For this reason,
There has been a problem that the microorganisms in the soil layer 1 cannot be given sufficient physiological activity conditions, and sufficient sewage treatment capacity cannot be exerted.

Means for Solving the Problems In order to solve the above-mentioned conventional problems, the soil treatment apparatus according to the present invention has a receiving tank for receiving drainage discharged from a pretreatment apparatus and a downward slope toward the receiving tank. It is characterized by having a soil treatment section having a water sprinkling tube and a pump for pumping up the waste water in the basin and supplying it to the high-side end of the water sprinkling tube.

Action In the soil treatment device according to the present invention, the drainage in the basin is pumped up by the pump and supplied to the high-side end of the sprinkling pipe. The sewage supplied to the high-side end of the sprinkler pipe by the pump flows down toward the basin due to the downward slope of the sprinkler pipe. As a result, the sprinkler pipe, the soil layer, the purification material, and the soil treatment section, which is the gravel layer, are activated like the Sanagara Stream to prevent dead water, activate the action of microorganisms, and improve the soil treatment action.

Moreover, the purification action in the soil treatment section is repeated,
With each repetition, the cleansing of evaporative diffusion water to the soil layer is promoted, so that a compact soil treatment apparatus with high treatment capacity can be obtained.

Examples FIG. 1 is a plan view showing the structure of a soil treatment apparatus according to the present invention, FIG. 2 is a developed sectional view, and FIG. 3 is a sectional view taken along the line AA in FIG. In the figure, the same reference numerals as those in FIG. 5 denote the same components. A is a soil treatment section, 9 is a pretreatment device, and 10 is a pumping pump. The basic structure of the soil treatment section A is the same as the conventional one. That is, as shown in FIGS. 2 and 3, a sprinkler pipe 2 having a large number of holes is arranged near the surface layer of the soil layer 1 and surrounded by a purifying material 3, a gravel layer 4, etc. ing. The point different from the conventional one is that the sprinkler pipe 2 of the soil treatment section A is arranged so as to have a downward slope toward the basin 5, and the sewage in the basin 5 is pumped up to the end of the sprinkler pipe 2 at the high position side. This is to have the pump 10 for supplying to the part 21.

The sewage that has flowed into the basin 5 from the pretreatment device 9 through the sewage inflow pipe 6 is pumped up by the pump 10 and supplied to the high-side end 21 of the sprinkling pipe 2. Sewage supplied to the high-side end 21 of the sprinkler 2 by the pump 10 is
Due to the descending gradient of, the water flows down toward the receiving vessel 5 as shown by the arrow (a), and at the same time, it is evaporated and diffused into the soil layer 1. Water that cannot be evaporated and diffused returns to the receiving vessel 5. The above operation is repeated as long as there is a return flow into the receiving vessel 5,
In the meantime, the soil purification process is always performed.
As a result, sprinkler pipe 2, soil layer 1, purification material 3 and gravel layer 4
The soil treatment part A consisting of is activated just like a mountain stream, dead water is prevented in the soil treatment part A, the action of microorganisms is activated, and the soil treatment action is improved.

Further, the purification action in the soil treatment section A is repeatedly performed,
With each repetition, the cleansing of the evaporative diffusion water to the soil layer 1 is promoted, so that a compact soil treatment apparatus with high treatment capacity can be realized.

It is also effective to configure the purification material 3 with a relatively large purification stone as a means for accelerating stream conversion in the soil treatment section A to increase oxygen uptake and activate the activity of bacteria in the soil layer 1. is there.

In order to efficiently perform the soil treatment described above, it is important to prevent dead water in the pretreatment device 9 arranged in the preceding stage of the receiving tank 5. FIG. 4 shows an embodiment of such a pretreatment device 9, and a net-like structure is arranged horizontally with one end attached to the drainage inlet inside a treatment tank 91 having a drainage inlet 911 provided above. A first filter 92 formed of a pipe, a second filter 93 disposed below the first filter 92 with a space therebetween, and a processing tank bottom surface 912 under the second filter 93.
And the purification layer 94 arranged in the
It has a structure in which an outlet 95 is provided in succession to 2. 96
Is a hand basket for removing coarse dust, and 97 is a wastewater inflow pipe.

The domestic wastewater discharged from the home flows into the first filter 92 from the inlet provided above the treatment tank 91, flows horizontally through the first filter 92, and flows downward from the mesh. The first filter is relatively coarse dust contained in sewage.
Captured by 92. Since the first filter 92 is a wavy pipe, water flows down and dust is trapped over the entire circumference and the entire length of the first filter 92, and miscellaneous waste water does not accumulate. Further, since the second filter 93 is arranged below the first filter 92 with a space therebetween, the air permeability and the drainage of water are good, and the first filter 92 is apt to be rot and slime due to anaerobic bacteria. Occurrence is suppressed.

The miscellaneous wastewater that has flowed down from the first filter 92 enters the second filter 93 and traps oil and fine dust.
The wastewater is treated in the purification layer 94 by the action of bacteria and enters the receiving tank 5 through the outlet.

As described above, according to the pretreatment apparatus shown in FIG. 4, the un-rotted miscellaneous waste water immediately after leaving the home can be separated into water, organic waste, and oil. For this reason,
It is possible to prevent the sewage flowing into the house from dead water and to accelerate the soil treatment action.

Effects of the Invention As described above, the soil treatment apparatus according to the present invention includes a receiving vessel that receives the wastewater discharged from the pretreatment apparatus, and a soil treating section that has a sprinkling pipe having a downward slope toward the receiving vessel. ,
Since the pump has a pump for pumping the drainage in the receiving tank and supplying it to the end portion on the high position side of the sprinkling pipe, the following effects can be obtained.

(A) Activate the soil treatment part like a mountain stream,
It is possible to provide a soil treatment device in which the action of microorganisms is promoted and the soil treatment action is improved.

(B) The purification action of the soil treatment section A is repeatedly performed, and the cleansing of the evaporative diffusion water to the soil layer is promoted with each repetition, so that a compact soil treatment device with high treatment capacity is realized. it can.

[Brief description of drawings]

FIG. 1 is a plan view showing the structure of a soil treatment apparatus according to the present invention, FIG. 2 is a developed sectional view, FIG. 3 is a sectional view taken along the line AA in FIG. 2, and FIG. Sectional view of device, fifth
The figure is a cross-sectional view of a conventional soil treatment device. A: Soil treatment part 1 ... Soil layer, 2 ... Sprinkler pipe 3 ... Purification material layer, 4 ... Gravel layer 5 ... Receiving container, 9 ... Pretreatment device 10 ... Pumping pump

Claims (1)

[Claims] 1. A receiving tank for receiving wastewater discharged from a pretreatment device, a soil treatment section having a water spray pipe having a downward slope toward the receiving tank, and drainage in the receiving tank for pumping the drainage water. A soil treatment device comprising: a pump for supplying water to the end of the water pipe on the high position side.