KR20230143336A - Pre-treatment equipment for direct inputting of domestic wastewater and excrements, and method for the same - Google Patents

Abstract

When domestic sewage or excrement is directly injected into the sewer pipe, a pre-treatment facility can be installed in each household drainage facility to smoothly transport the solids of the domestic sewage or excrement within the sewer pipe, thereby reducing the cleaning of the sewer pipe and the generation of bad odors, and the sewage treatment plant. It can be operated efficiently, and a U-type trap is installed in the pre-treatment facility for direct injection of domestic sewage and excrement to prevent odor and backflow. In addition, the flow rate and water level in the pre-treatment storage tank of the pre-treatment facility can be monitored. A pre-treatment facility and method for direct injection of domestic sewage and excrement is provided, with a water level sensor installed so that sewage usage and generated load can be easily calculated.

Description

Pretreatment facility and method for direct input of domestic sewage and waste {PRE-TREATMENT EQUIPMENT FOR DIRECT INPUTTING OF DOMESTIC WASTEWATER AND EXCREMENTS, AND METHOD FOR THE SAME}

The present invention relates to a pretreatment facility for domestic sewage and excrement. More specifically, when domestic sewage or excrement is directly injected into a sewer pipe, pretreatment is performed in a pretreatment storage tank to facilitate the transfer of solids from the domestic sewage or excrement within the sewer pipe. It relates to a pre-treatment facility and method for direct injection of domestic sewage and excrement.

Recently, when domestic sewage and excrement, including food waste, are directly injected into the sewer pipe in a combined area among urban sewage drainage systems, a strong odor is generated within the sewer pipe due to the accumulation of solids (e.g., excrement, food) within the sewer pipe. In addition, during initial rainfall, high-concentration solids flow into the sewage treatment plant through sewage pipes, increasing the solid and pollutant load at the sewage treatment plant, and as a result, a situation occurs in which the water quality standards for the effluent from the sewage treatment plant are exceeded.

In addition, when reconstructing a combined sewer pipe, the load on the sewage treatment plant increases due to non-point pollution sources generated within the treatment area, an increase in hydraulic load due to initial rainfall, and flushing of contaminants deposited in the sewer pipe, resulting in a situation where the water quality standards for the effluent from the sewage treatment plant are exceeded. This is happening.

Meanwhile, as a related technology, the Republic of Korea Patent Publication No. 2000-0054588 discloses an invention titled “Excrement, food waste and domestic sewage treatment device and method for treating excrement, food waste and domestic sewage using the same”, Figure 1 It is explained with reference to .

Figure 1 is a longitudinal cross-sectional view of a system for treating excrement, food waste, and domestic sewage according to the prior art.

Referring to FIG. 1, the excrement, food waste, and domestic sewage treatment device according to the prior art uses excrement transferred from the toilet 11, food waste pulverized by a grinder attached to the lower part of the sink 12, and domestic sewage pipes. A primary fermentation tank (21) in which the domestic sewage transferred from (13) is agitated in the presence of aquatic microorganisms and fermented under anaerobic and partially aerobic conditions; A secondary fermentation tank (23) in which hundreds of thousands of fine ventilation holes exist on the sides and the upper part is in contact with air to ferment the primary fermentation broth transferred from the primary fermentation tank under aerobic conditions; An adsorption tank (24) that adsorbs residual components in the secondary fermentation broth transferred from the secondary fermentation tank; A primary storage tank (25) for storing water transferred from the adsorption tank (24); and a pipe connecting the primary storage tank (25) to the toilet (11) and the household water faucet. Here, the unexplained reference numeral 22 represents a motor, 26 represents a dispersion pipe, and 27 represents a secondary storage tank.

The apparatus for treating excrement, food waste and domestic sewage according to the prior art is to process excrement, food waste and domestic sewage pulverized by a grinder attached to the bottom of the sink into a primary fermentation tank 21 under anaerobic and partially aerobic conditions and under aerobic conditions. It is completely decomposed through the secondary fermentation tank (23), and the remaining components are adsorbed in the adsorption tank (24) to completely decompose the manure, food waste, and domestic sewage so that no solid components remain. The resulting water is stored in a storage tank, Through user manipulation, the water stored in the storage tank can be recycled as toilet flushing water or household water.

In addition, according to the conventional technology for treating excrement, food waste and domestic sewage, there is no need to completely decompose the excrement and reprocess the solid components, which can be used not only as a household septic tank but also as an outdoor toilet, and the purified liquid components are washed. In addition to recirculating water, it can also treat food waste and domestic sewage at the same time.

However, in the case of the apparatus for treating excrement, food waste, and domestic sewage according to the prior art, a primary fermentation tank (21), a secondary fermentation tank (23), an adsorption tank (24), etc. are used to recirculate the purified liquid components as washing water. There is a problem that the structure is complicated because additional installation is required.

Republic of Korea Patent No. 10-1136420 (registration date: April 6, 2012), title of invention: “Integrated purification treatment method for food wastewater, livestock wastewater and excrement” Republic of Korea Patent No. 10-249465 (registration date: December 24, 1999), title of invention: “Syphonic filtration wheel for sewage and excrement combined septic tank” Republic of Korea Patent No. 10-1136420 (registration date: April 6, 2012), title of invention: “Integrated purification treatment method for food wastewater, livestock wastewater and excrement” Republic of Korea Patent No. 10-1790307 (registration date: October 19, 2017), title of invention: “Odor reduction device in septic tank” Republic of Korea Registered Utility Model No. 20-0425757 (registration date: August 30, 2006), design name: “Independent septic tank for sewage treatment area” Republic of Korea Patent Publication No. 2000-0054588 (publication date: September 5, 2000), title of the invention: “Device for treating excrement, food waste and domestic sewage and method for treating excrement, food waste and domestic sewage using the same”

The technical problem to be achieved by the present invention to solve the above-mentioned problems is that when domestic sewage or excrement is directly injected into the sewer pipe, a pre-treatment facility is installed in each household drainage facility to smoothly transfer the solids of the domestic sewage or excrement into the sewer pipe. The purpose is to provide a pretreatment facility and method for direct input of domestic sewage and excrement.

Another technical problem to be achieved by the present invention is to prevent bad odor and backflow by installing a U-type trap in a direct injection pretreatment facility for live sewage and waste. It is intended to provide pretreatment facilities and methods for direct input of domestic sewage and excrement.

Another technical problem to be achieved by the present invention is to install a water level sensor to monitor the flow rate and water level in the pretreatment storage tank of the pretreatment facility, so that the sewerage usage and generated load can be easily calculated, and the direct input of domestic sewage and excrement. It is intended to provide pretreatment facilities and methods for.

As a means of achieving the above-mentioned technical problem, the pretreatment facility for direct input of domestic sewage and excrement according to the present invention is a pretreatment facility for direct input of domestic sewage discharged from the kitchen or bathroom of a house and excrement discharged from the toilet. In the facility, domestic sewage and excrement flowing in through the domestic sewage and excrement inlet pipe installed at the front are stored for a certain period of time, and pre-processed so that the solids of the waste are disintegrated until the domestic sewage and excrement reach a preset water level. Pretreatment reservoir; A water level sensor installed at the top of the pretreatment storage tank to measure the water level of the domestic sewage and excrement; And a butterfly valve installed at the bottom of the pretreatment storage tank to operate in conjunction with the water level sensor, the opening and closing of which is controlled to discharge the domestic sewage and excrement into the combined sewer pipe in response to the water level of the domestic sewage and excrement, The pre-treatment storage tank is pre-treated to disintegrate the solids in the excrement, and when a certain water level is reached, a butterfly valve linked to the water level sensor operates to discharge the pre-treated domestic sewage and excrement into the combined sewer pipe at equal water quality and flow rate. It is characterized by

The pretreatment facility for direct injection of domestic sewage and excrement according to the present invention may further include a U-type trap installed between the domestic sewage and excrement confluence pipe and the domestic sewage and excrement inflow pipe to prevent odor and backflow. You can.

Here, the bottom surface of the pretreatment storage tank is inclined so that the domestic sewage and waste are transferred to the combined sewer pipe without deposition of the dismantled waste solids.

Here, the capacity of the pretreatment storage tank is 80 liters based on 200 to 300 (lpcd) of sewage generation per person per day, the residence time of the domestic sewage and excrement in the pretreatment reservoir is set to 30 minutes or more, and the residence time of the domestic sewage and excrement is set to 30 minutes or more. It is desirable to set the discharge time to within 30 seconds.

Here, the water level sensor can monitor the flow rate and water level in the pretreatment storage tank by controlling the opening and closing of the butterfly valve to calculate sewage usage and generated load.

Here, a rainwater catchment grating is installed in front of the upper end of the pretreatment storage tank to allow rainwater to flow in, and the rainwater flowing in through the rainwater catchment grating is mixed with domestic sewage and excrement flowing into the pretreatment storage tank.

Meanwhile, as another means of achieving the above-described technical problem, the pretreatment method for direct input of domestic sewage and excrement according to the present invention is: a) domestic sewage discharged from the kitchen or bathroom of a house via a domestic sewage drain pipe; Draining and draining the excrement discharged from the toilet via a excrement drain pipe; b) storing domestic sewage and excrement flowing in through a domestic sewage and excrement inlet pipe installed at the front of the pre-treatment reservoir in the pre-treatment reservoir; c) a water level sensor installed in the pretreatment storage tank measuring whether the water level of the domestic sewage and excrement rises to a preset water level; d) If the water level of the domestic sewage and excrement does not rise to the preset level, pre-processing the solids of the excrement to disintegrate while closing the butterfly valve linked to the water level sensor until the water level rises to the preset level. ; and e) when the water level of the domestic sewage and excrement rises to a preset water level, opening a butterfly valve linked to the water level sensor to discharge the dismantled waste solids through a combined sewer pipe, wherein the water level sensor is characterized by monitoring the flow rate and water level of domestic sewage and excrement in the pretreatment storage tank by controlling the opening and closing of the butterfly valve, and calculating the amount of sewage usage and generated load.

According to the present invention, when domestic sewage or excrement is directly introduced into the sewer pipe, a pre-treatment facility is installed in each household drainage facility to smoothly transport the solids of the domestic sewage or excrement in the sewer pipe, thereby reducing the cleaning of the sewer pipe and the generation of bad odor. and the sewage treatment plant can be operated efficiently.

According to the present invention, a U-type trap is installed in a direct injection pretreatment facility for domestic sewage and excrement to prevent odor and backflow.

According to the present invention, a water level sensor is installed to monitor the flow rate and water level in the pretreatment storage tank of the pretreatment facility, so that sewage usage and generated load can be easily calculated.

Figure 1 is a longitudinal cross-sectional view of a device for treating excrement, food waste, and domestic sewage according to the prior art.
Figure 2 is a schematic configuration diagram of a pretreatment facility for direct input of domestic sewage and excrement according to an embodiment of the present invention.
Figure 3 is a detailed configuration diagram of a pretreatment facility for direct input of domestic sewage and waste according to an embodiment of the present invention.
FIGS. 4A to 4D are diagrams for specifically explaining the operation of a pretreatment storage tank in a pretreatment facility for direct injection of domestic sewage and wastewater according to an embodiment of the present invention.
Figure 5 is a diagram for specifically explaining a U-type trap in a pretreatment facility for direct injection of domestic sewage and excrement according to an embodiment of the present invention.
Figure 6 is an operation flowchart of a pretreatment method for direct injection of domestic sewage and excrement according to an embodiment of the present invention.

Below, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. In order to clearly explain the present invention in the drawings, parts that are not related to the description are omitted, and similar parts are given similar reference numerals throughout the specification.

Throughout the specification, when a part is said to “include” a certain element, this means that it may further include other elements rather than excluding other elements, unless specifically stated to the contrary.

[Pre-treatment facility (100) for direct injection of domestic sewage and excrement]

Figure 2 is a schematic configuration diagram of a pretreatment facility for direct injection of domestic sewage and sewage according to an embodiment of the present invention, and Figure 3 is a schematic diagram of a pretreatment facility for direct injection of domestic sewage and sewage according to an embodiment of the present invention. This is a detailed configuration diagram.

Referring to Figures 2 and 3, the pretreatment facility 100 for direct input of domestic sewage and excrement according to an embodiment of the present invention is a living waste discharged from the kitchen or bathroom 210 of a private home 200. It is a pre-treatment facility for direct input of sewage and excrement discharged from toilets, including a pre-treatment storage tank (110), water level sensor (120), butterfly valve (130), U-type trap (140), rainwater catchment grating (150), and living facilities. Includes sewage and excrement inlet pipe (160).

First, domestic sewage is discharged from the kitchen or bathroom 210 of the house 200 via the domestic sewage drain pipe 230, and excrement from the toilet is discharged via the excrement drain pipe 240, and the domestic sewage and excrement confluence pipe ( 250). Here, domestic sewage includes kitchen and laundry sewage, and may also include food waste.

The pretreatment storage tank 110 stores domestic sewage and excrement flowing in through the domestic sewage and excrement inflow pipe 160 installed at the front for a certain period of time, and stores the sewage and excrement until the domestic sewage and excrement reaches the preset water level. Preprocess to disintegrate solids.

At this time, as shown in FIG. 3, the bottom surface of the pretreatment storage tank 110 is inclined so that the domestic sewage and excrement can be transferred to the combined sewer pipe 310 without deposition of the dismantled waste solids. Here, the capacity of the pretreatment storage tank 110 is 80 liters based on 200 to 300 (lpcd) of sewage generated per person per day, and the residence time of the domestic sewage and excrement in the pretreatment storage tank 110 is set to 30 minutes or more, The discharge time of the domestic sewage and excrement is preferably set to within 30 seconds.

The water level sensor 120 is installed at the top of the pretreatment storage tank 110 to measure the water level of the domestic sewage and excrement. As will be described later, the water level sensor 120 can monitor the flow rate and water level in the pretreatment storage tank 110 by controlling the opening and closing of the butterfly valve 130 to calculate sewage usage and generated load.

The butterfly valve 130 is installed at the bottom of the pretreatment storage tank 110 to operate in conjunction with the water level sensor 120, and connects the domestic sewage and excrement to the combined sewer pipe 310 in response to the water level of the domestic sewage and excrement. ) The opening and closing is controlled to discharge to ). Specifically, the butterfly valve refers to a valve that controls the flow rate of a pipe by turning a disc-shaped valve body within the valve pipe. That is, the butterfly valve 130 can be controlled to open and close in response to the water level of the water level sensor 120.

The U-shaped trap 140 is installed between the domestic sewage and excrement confluence pipe 250 and the domestic sewage and excrement inflow pipe 160 to prevent bad odor and backflow. That is, as shown in FIG. 5, which will be described later, the domestic sewage and excrement confluence pipe 250 where the domestic sewage drain pipe 230 and the excrement drain pipe 240 join and the living sewage pipe installed at the front of the pretreatment storage tank 110 The U-shaped trap (140) installed between the sewage and excrement inflow pipes (160) removes bad odors generated by the domestic sewage and excrement and prevents backflow.

The rainwater catchment grating 150 is installed at the front of the upper end of the pretreatment storage tank 110 to bring in rainwater, and the rainwater flowing in through the rainwater catchment grating 150 includes domestic sewage and sewage flowing into the pretreatment storage tank 110. Mixed with manure.

Accordingly, the pre-treatment storage tank 110 pre-treats the solids of the excrement to disintegrate, and when the water level reaches a certain level, the butterfly valve 130 linked to the water level sensor 120 operates to discharge the pre-treated domestic sewage and excrement. is discharged into the combined sewer pipe 310 with equal water quality and flow rate, and subsequently, the domestic sewage and excrement are treated in the sewage treatment plant 320 installed at the end of the combined sewer pipe 310.

Meanwhile, FIGS. 4A to 4D are diagrams for specifically explaining the operation of the pretreatment storage tank in the pretreatment facility for direct injection of domestic sewage and wastewater according to an embodiment of the present invention.

As shown in FIG. 4A, the pretreatment facility 100 for direct input of domestic sewage and excrement according to an embodiment of the present invention processes the domestic sewage and excrement flowing in through the domestic sewage and excrement inlet pipe 160. It is stored in the pretreatment storage tank 110. At this time, since the water level of the domestic sewage and excrement has not reached the preset water level, the butterfly valve 130 does not operate.

In addition, as shown in Figure 4b, the water level sensor 120 installed in the pretreatment storage tank 110 measures whether the water level of the domestic sewage and excrement rises to a preset water level, and determines whether the water level of the domestic sewage and excrement rises to a preset level. If the water level does not rise to the preset level, the solid matter of the excrement is pretreated to be dismantled while the butterfly valve 130 linked to the water level sensor 120 is closed until the water level rises to the preset level.

In addition, as shown in Figure 4c, when the water level of the domestic sewage and excrement rises to the preset water level, the butterfly valve 130 linked to the water level sensor 120 is opened to merge the dismantled waste solids. It is discharged through the sewer pipe (310). Here, the bottom surface of the pretreatment storage tank 110 is inclined so that the domestic sewage and excrement are transferred to the combined sewer pipe 310 without deposition of the dismantled waste solids.

In addition, as shown in FIG. 4D, when the domestic sewage and excrement are transferred to the combined sewer pipe 310, the water level of the domestic sewage and excrement in the pretreatment storage tank 110 decreases, and the water level sensor 120 The interlocking butterfly valve 130 is closed again.

Meanwhile, Figure 5 is a diagram for specifically explaining a U-type trap in a pretreatment facility for direct injection of domestic sewage and excrement according to an embodiment of the present invention.

As shown in FIG. 5, in the pretreatment facility for direct injection of domestic sewage and excrement according to an embodiment of the present invention, the U-type trap collects domestic sewage where the domestic sewage drain pipe 230 and the sewage drain pipe 240 join. And it is installed between the sewage confluence pipe 250 and the domestic sewage and excrement inflow pipe 160 installed at the front of the pretreatment storage tank 110, to remove bad odors generated by the domestic sewage and excrement and prevent backflow. there is.

Ultimately, according to an embodiment of the present invention, a U-type trap is installed in the direct injection pretreatment facility for domestic sewage and excrement to prevent odor and backflow, and also to monitor the flow rate and water level in the pretreatment storage tank of the pretreatment facility. A water level sensor is installed so that sewage usage and load can be easily calculated.

[Pretreatment method for direct injection of domestic sewage and excrement]

Figure 6 is an operation flowchart of a pretreatment method for direct injection of domestic sewage and excrement according to an embodiment of the present invention.

Referring to FIG. 6, the pretreatment method for direct input of domestic sewage and excrement according to an embodiment of the present invention firstly connects domestic sewage discharged from the kitchen or bathroom 210 of a private house 200 to a domestic sewage drain pipe. It is drained via (230), and the excrement discharged from the toilet is drained via the excrement drain pipe (240) (S110). Here, domestic sewage includes kitchen and laundry sewage, and may also include food waste.

Next, between the domestic sewage and excrement confluence pipe 250 where the domestic sewage drain pipe 230 and the excrement drain pipe 240 join, and the domestic sewage and excrement inflow pipe 160 installed at the front of the pretreatment storage tank 110. The U-shaped trap installed in the system removes bad odors caused by domestic sewage and excrement and prevents backflow (S120).

Next, the domestic sewage and excrement flowing in through the domestic sewage and excrement inlet pipe 160 are stored in the pretreatment storage tank 110 (S130).

Next, the water level sensor 120 installed in the pretreatment storage tank 110 measures whether the water level of the domestic sewage and excrement rises to a preset water level (S140).

Next, if the water level of the domestic sewage and excrement does not rise to the preset level, the butterfly valve 130 linked to the water level sensor 120 is closed until the water level rises to the preset level. Preprocess to disintegrate solids (S150).

Next, when the water level of the domestic sewage and excrement rises to the preset water level, the butterfly valve 130 linked to the water level sensor 120 is opened to discharge the dismantled waste solids through the combined sewer pipe 310. Do it (S160). Here, the bottom surface of the pretreatment storage tank 110 is inclined so that the domestic sewage and excrement are transferred to the combined sewer pipe 310 without deposition of the dismantled waste solids. Specifically, the capacity of the pretreatment storage tank 110 is 80 liters based on 200 to 300 (lpcd) of sewage generation per person per day, and the residence time of the domestic sewage and excrement in the pretreatment storage tank 110 is set to 30 minutes or more. , it is desirable that the discharge time of the domestic sewage and excrement is set to within 30 seconds.

Accordingly, the water level sensor 120 monitors the flow rate and water level of domestic sewage and excrement in the pretreatment storage tank 110 by controlling the opening and closing of the butterfly valve 130, and calculates sewage usage and generated load. You can.

Ultimately, according to an embodiment of the present invention, when domestic sewage or excrement is directly injected into the sewer pipe, a pre-treatment facility is installed in each household drainage facility to smoothly transport the solids of the domestic sewage or excrement within the sewer pipe, thereby cleaning and cleaning the sewer pipe. Odor generation can be reduced and sewage treatment plants can be operated efficiently.

The description of the present invention described above is for illustrative purposes, and those skilled in the art will understand that the present invention can be easily modified into other specific forms without changing the technical idea or essential features of the present invention. will be. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. For example, each component described as unitary may be implemented in a distributed manner, and similarly, components described as distributed may also be implemented in a combined form.

The scope of the present invention is indicated by the claims described below rather than the detailed description above, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention. do.

100: Pretreatment facility for direct injection of domestic sewage and excrement
110: Pretreatment reservoir 120: Water level sensor
130: butterfly valve 140: U-type trap
150: Rainwater catchment grating 160: Domestic sewage and excrement inflow pipe
200: housing
210: Kitchen/Bathroom 220: Toilet
230: Domestic sewage drain pipe 240: Excrement drain pipe
250: Domestic sewage and excrement confluence pipe
310: Combined sewer pipe
320: Sewage treatment plant

Claims (10)

In the pretreatment facility for direct input of domestic sewage discharged from the kitchen or bathroom 210 of the house 200 and excrement discharged from the toilet,
Pretreatment to store domestic sewage and excrement flowing in through the domestic sewage and excrement inflow pipe 160 installed at the front for a certain period of time and to disintegrate solids in the waste until the domestic sewage and excrement reach a preset water level. Retention tank (110);
A water level sensor 120 installed at the top of the pretreatment storage tank 110 to measure the water level of the domestic sewage and excrement; and
It is installed at the bottom of the pretreatment storage tank 110 to operate in conjunction with the water level sensor 120, and the opening and closing is controlled to discharge the domestic sewage and excrement into the combined sewer pipe 310 in response to the water level of the domestic sewage and excrement. Butterfly valve (130)
Including,
The pre-treatment storage tank 110 pre-treats the solids of the excrement to disintegrate, and when a certain water level is reached, the butterfly valve 130 linked to the water level sensor 120 operates to distribute the pre-treated domestic sewage and excrement equally. A pretreatment facility for direct input of domestic sewage and excrement, characterized in that it is discharged into a combined sewer pipe (310) according to water quality and flow rate. According to paragraph 1,
Direct injection of domestic sewage and excrement, which additionally includes a U-type trap 140 installed between the domestic sewage and excrement confluence pipe 250 and the domestic sewage and excrement inlet pipe 160 to prevent odor and backflow. Pretreatment facility for. According to paragraph 1,
The bottom surface of the pretreatment storage tank 110 is inclined so that the domestic sewage and excrement are transferred to the combined sewer pipe 310 without deposition of the dismantled waste solids. A pretreatment facility for direct injection of domestic sewage and excrement. . According to paragraph 1,
The capacity of the pretreatment storage tank 110 is 80 liters based on 200 to 300 (lpcd) of sewage generated per person per day, and the residence time of the domestic sewage and excrement in the pretreatment storage tank 110 is set to 30 minutes or more, and the living A pretreatment facility for direct input of domestic sewage and sewage, characterized in that the discharge time of sewage and sewage is set to within 30 seconds. According to paragraph 1,
The water level sensor 120 monitors the flow rate and water level in the pretreatment storage tank 110 by controlling the opening and closing of the butterfly valve 130 to calculate sewage usage and generated load. Pre-treatment facilities for input. According to paragraph 1,
A rainwater catchment grating 150 is installed on the front of the upper end of the pretreatment storage tank 110 to bring in rainwater, and the rainwater flowing in through the rainwater catchment grating 150 includes domestic sewage and sewage flowing into the pretreatment storage tank 110. A pretreatment facility for direct injection of domestic sewage and sewage, characterized in that it is mixed with excrement. a) draining domestic sewage discharged from the kitchen or bathroom 210 of the house 200 via the domestic sewage drain pipe 230, and draining excrement discharged from the toilet via the excrement drain pipe 240;
b) storing domestic sewage and excrement flowing in through the domestic sewage and excrement inlet pipe 160 installed at the front of the pretreatment storage tank 110 in the pretreatment storage tank 110;
c) a step of measuring whether the water level of the domestic sewage and excrement rises to a preset water level by the water level sensor 120 installed in the pretreatment storage tank 110;
d) If the water level of the domestic sewage and excrement does not rise to the preset level, the solids of the excrement are removed in a state in which the butterfly valve 130 linked to the water level sensor 120 is closed until the water level rises to the preset level. preprocessing to dismantle; and
e) When the water level of the domestic sewage and excrement rises to the preset water level, the butterfly valve 130 linked to the water level sensor 120 is opened to discharge the dismantled waste solids through the combined sewer pipe 310. Includes steps,
The water level sensor 120 monitors the flow rate and water level of domestic sewage and excrement in the pretreatment storage tank 110 by controlling the opening and closing of the butterfly valve 130, and calculates sewage usage and generated load. Pretreatment method for direct injection of domestic sewage and excrement. In clause 7,
Before performing step b), the domestic sewage and excrement inflow installed at the front of the pre-treatment storage tank 110 and the domestic sewage and excrement confluence pipe 250 where the domestic sewage drain pipe 230 and the excrement drain pipe 240 join. A pretreatment method for direct injection of domestic sewage and excrement, further comprising the step of removing odors generated by the domestic sewage and excrement and preventing backflow through a U-shaped trap (140) installed between pipes (160). In clause 7,
The bottom surface of the pretreatment storage tank 110 is inclined so that the domestic sewage and excrement are transferred to the combined sewer pipe 310 without deposition of the dismantled waste solids. A pretreatment method for direct injection of domestic sewage and excrement. . In clause 7,
The capacity of the pretreatment storage tank 110 is 80 liters based on 200 to 300 (lpcd) of sewage generated per person per day, and the residence time of the domestic sewage and excrement in the pretreatment storage tank 110 is set to 30 minutes or more, and the living A pretreatment method for direct input of domestic sewage and excrement, characterized in that the discharge time of sewage and excrement is set to within 30 seconds.