KR100349186B1 - A soil cover type sewage disposal facility having sewage and food waste matter disposal function - Google Patents

Abstract

Purification treatment device of the present invention by the sewage treatment method using the soil microorganisms in parallel treatment of the purification treatment of sewage, waste water and the purification of food waste. The purification apparatus of the present invention treats food waste by the treatment system of the food waste digestion tank and the sludge storage tank, and comprises a sedimentation separation tank, a first contact aeration tank, a precipitation tank, a second contact aeration tank, a natural filtration type contact filtration tank, and a discharge tank. The sewage and wastewater purification treatment by the system is performed in parallel. According to the sewage and wastewater purification treatment device, organic matter is circulated organically with sludge to continuously supply microorganisms to effectively treat food wastes in the shortest time, and the digested food wastes are transferred to a storage tank for recycling as organic fertilizers. Eliminate the burden on sewage sludge treatment. The structure of food waste digestion tank is designed to maintain proper agitation (corrosion temperature) temperature by underground laying and to maintain aerobic condition and to maintain aerobic condition. Flowing induces the propagation of a large number of microorganisms to improve the efficiency of organic decomposition.

Description

SOIL COVER TYPE SEWAGE DISPOSAL FACILITY HAVING SEWAGE AND FOOD WASTE MATTER DISPOSAL FUNCTION}

The present invention relates to a sewage and wastewater purification apparatus, and more particularly, to a soil-covered sewage and wastewater purification apparatus capable of purifying food waste together with the sewage and wastewater purification function by internal circulation contact oxidation method. .

In general, sewage and wastewater treatment methods have been treated only for water purification in the state of excluding food waste. Until now, food waste has been collected like general garbage without a certain treatment method, and most of it has been landfilled. Attempts have been made to collect some food waste separately and recycle it as feed or fertilizer. However, recently, food waste feed containing animal feeds to ruminants has caused problems, causing social confusion resulting in enormous supply of livestock products. It is causing trouble. Food waste accounts for approximately 83% of the total generation in households and restaurants. Since food waste decays quickly, the cost of treatment is also high, and their effective treatment is of paramount importance.

Conventional sewage and wastewater treatment technologies have been installed without considering the process of treating food waste, which is difficult to merge. In the United States and Europe, due to regional characteristics, there is no problem because of the merged process, but considering the current treatment process in our country, it is unprotected against odor, the stage countermeasures for the function of food digester, and the treatment efficiency is reduced. The merge process cannot be performed.

In the past, sewage treatment systems installed in the past have been collecting and treating all large-scale sewage in one district. In this treatment system, sewage pipes are combined with rainwater, and when food wastes are thrown away from home, odors are generated in various places, and groundwater contamination due to pipeline failure is inevitably required. As a result, the government is strongly encouraged to disperse all sewage treatment facilities, and sewage segregation is being implemented in small towns and rural areas. However, due to the problem of sewage treatment in these areas, it is not possible to perform the combined treatment with food waste. Most of these methods are functionally impossible for the combined treatment of food waste because there is no residence time and no treatment process by soil microorganisms or ecosystem.

To date, food waste treatment technology has largely relied on incineration and landfilling. Incineration treatment is not only used in Korea because of the enormous cost of treatment, but also air pollution and odors in the process, which require frequent technical and management. On the other hand, the landfill treatment has been introduced in many ways because of its simple processing method. However, landfill treatment is a reality that can not prevent the occurrence of odor, groundwater and surrounding ecosystem destruction by leachate. In addition, since the purchase cost is enormous due to friction with residents since the site selection of the landfill site, facility costs are increasing. As a result, as landfills move away from the landfill site, transportation costs are increasing day by day, and friction with residents adjacent to the transportation route is intensifying. In addition, in the case of landfill, food waste is not digested (discarded) until at least 30 years have passed, so it is difficult to operate land efficiently as it becomes unused. For this reason, the government has banned food waste from landfills since January 1, 2005. Therefore, it is urgent to propose ways to effectively treat food waste.

Accordingly, it is an object of the present invention to provide a soil-covered sewage and wastewater purification apparatus capable of purifying food waste with a sewage and wastewater purification treatment function as proposed to solve the above-mentioned problems.

1 is a block diagram illustrating a treatment system of a soil-coated sewage and wastewater purification treatment apparatus of the present invention;

2 is an overall configuration diagram of a soil coating type sewage and wastewater purification treatment apparatus of the present invention;

3 is a plan view showing a planar arrangement structure of the soil-based sewage and wastewater purification treatment apparatus of FIG. 2; And

Figure 4 is an enlarged view showing in detail the configuration of the food waste digestion tank and the reservoir tank of FIG.

According to a feature of the present invention for achieving the object of the present invention as described above, the soil-covered sewage and sewage purification of the grass covering vegetation network formed with a plurality of vent holes formed in the upper layer of each treatment tank and the soil layer is formed thereon The treatment apparatus includes: a food waste digestion tank having an acid pipe for aeration, and discharging digested sludge by crushing the injected food waste; Sludge tank for receiving and storing the digested sludge waste in the food waste digestion tank; A sedimentation separation tank for receiving sewage and wastewater introduced through the supernatant and the sewage and wastewater inflow pipes provided by the sludge storage tank for sedimentation and separation; A first contact aeration tank having an aeration pipe for aeration and receiving and aeration of sewage and waste water separated by the sedimentation separation tank; A sedimentation tank for receiving sewage and wastewater aerated in the first contact aeration tank to precipitate sludge; A second contact aeration tank having an aeration pipe for aeration and receiving sewage and waste water through the settling tank and aeration; A natural filtration type contact aeration tank for taking natural sewage and wastewater aerated in the second contact aeration tank and filtering it naturally; And a discharge tank receiving the sewage and wastewater finally purified in the natural filtration type contact aeration tank and discharged through the discharge pipe.

In a preferred embodiment of the present invention, the food waste digestion tank includes a vertically flowing partition wall for inducing microbial propagation in the tank.

In a preferred embodiment of the present invention, the food waste digestion tank, the first and second contact aeration tank, sedimentation tank, natural filtration type contact aeration tank and discharge tank are interconnected through the sludge transfer pipe, each air lift pump installed inside The sludge is circulated through the sludge transfer pipe by using the (AP pump) and the sludge pump.

Embodiments of the present invention may be modified in various forms, and the scope of the present invention should not be construed as being limited by the embodiments described below. This embodiment is provided to explain more clearly the present invention to those skilled in the art. Accordingly, the shape of the elements in the drawings and the like are exaggerated to emphasize a clearer description.

(Example)

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The novel sewage and wastewater purification treatment apparatus of the present invention is provided with a separate food waste digester in the soil coating sewage and wastewater purification treatment apparatus to enable parallel treatment of food waste. The technology for the soil coating sewage and wastewater purification treatment apparatus is disclosed in Korean Patent Laid-Open Publication No. 2001-0000303 'Soil coating internal circulation contact oxidation apparatus and contact oxidation method using the same'.

Soil-covered sewage and wastewater purification treatment method is a nature-friendly method that covers the capillary network with a plurality of air vents formed on the upper part of each treatment tank, and makes soil layer on it. In addition to the carbon compounds, some of the nitrogen and phosphorus can be removed by the nutrients of the organisms and turf in the soil layer, as well as the habitat of the soil microorganisms when the microorganisms in the reactor die due to the abnormality of the incoming water quality or the fixing of the air supply system. Microorganisms are supplied from the soil layer into the reaction tank so that the soil layer acts as a natural microbial culture tank. For a detailed description of such a soil-coated sewage and wastewater purification treatment method, refer to Korean Patent Publication No. 2001-0000303.

1 is a block diagram illustrating a treatment system of a soil-coated sewage and wastewater purification treatment apparatus of the present invention.

Referring to the drawings, the sewage and wastewater purification apparatus of the present invention is the treatment of food waste by the treatment system of the food waste digestion tank 10 and the sludge storage tank 20 and the sedimentation separation tank 30, the first contact aeration tank 40 ), Sewage and wastewater purification treatment by a treatment system composed of a sedimentation tank 50, a second contact aeration tank 60, a natural filtration type contact filtration tank 70, and a discharge tank 80 are performed in parallel.

2 is an overall configuration diagram of the soil coating sewage and wastewater purification treatment apparatus of the present invention and Figure 3 is a plan view showing a planar arrangement of the soil coating sewage and wastewater purification treatment apparatus of FIG. And Figure 4 is an enlarged view showing in detail the configuration of the food waste digestion tank 10 and the reservoir tank 20 of FIG.

Referring to the drawings, the sewage and wastewater purification apparatus of the present invention includes a food waste digestion tank 10 and a sludge storage tank 20 for food waste treatment. And sedimentation separation tank 30, the first contact aeration tank 40, the sedimentation tank 50, the second contact aeration tank 60, the natural filtration type contact filtration tank 70, and the discharge tank 80 for sewage and waste water purification treatment ). In addition, although the size and shape of each of the above treatment tanks are different, the soil having the porous soil 2 formed on the upper layer of the pedestal 24, the capillary network media 22, the capillary network 26 and the capillary network 26 is formed. It has a coating-type purification structure.

The structure of the food waste digestion tank 10 supplies a little air to the inlet and installs a partition in the tank to maintain the aerobic state and maintain the proper extinguishing temperature by underground laying to improve the digestion efficiency. By inducing up and down flow of microorganisms to multiply and multiply the organic matter decomposition efficiency is improved.

Food waste digestion tank 10, the first and second contact aeration tank (40, 60), sedimentation tank (50), natural filtration type contact aeration tank (70) and discharge tank (80) are interconnected through the sludge transfer pipe (100) The sludge settled through the sludge transfer pipe 100 is transferred to the food waste digester 10 by using air lift pumps and sludge pumps 11, 41, 51, 61, 71, and 81 installed therein. . For reference, when the air is blown into the pipe, the air lift pump raises the sludge together with the water by the force of air and transfers it.

The food waste digestion tank 10 and the first and second contact aeration tanks 40 and 60 are provided with diffusers 13, 43 and 63, respectively, for use in aeration. The air injected from the air injection window 90 is supplied to the plurality of treatment tanks except for the reservoir tank 20 and the sedimentation separation tank 30 through a plurality of air supply pipes 94, respectively. The plurality of treatment baths described above are connected by an interconnect pipe 120.

Food waste is introduced into the food waste digestion tank 10, and the sewage and wastewater are respectively introduced through the sewage and wastewater inlet pipe 124 connected to the sedimentation separation tank 30. Food wastes disinfected in the food waste digestion tank 10 are continuously transferred to the sludge storage tank 20 by the sludge feed pipe 110 by the sludge pump 12 installed therein, and these are recycled as organic fertilizer. An appropriate amount of air is supplied through the diffuser 13 for rapid decomposition and mixing of incoming food, and microorganisms are supplied from a return sludge due to internal circulation so that a large number of microorganisms can coexist and an upper and lower partition is installed artificially. By increasing the flow rate, food waste can be decomposed in the shortest possible time by increasing the efficiency of the treatment process.

The supernatant after being processed in the food waste digestion tank 10 and the sludge storage tank 20 is transferred to the sedimentation separation tank 30. Food wastes are installed at the time of inflow to prevent odors and to prevent corruption of inflow facilities (not shown) .In the area where food waste grinding facilities are needed, automatic grinding facilities are installed in the food waste digestion tank 10. A rooftop building can be set up in conjunction with the inlet. In this case, the discharged water discharged from the discharge tank 80 may be introduced into the automatic grinding chamber for washing.

The sewage and wastewater introduced through the sewage and wastewater inlet pipe 124 and the supernatant introduced from the sludge storage tank 20 are the sedimentation separation tank 30, the first contact aeration tank 40, the sedimentation tank 50, and the second contact aeration tank. (60), it is purified through the natural filtration contact filter (70) and finally collected in the discharge tank (80) and discharged through the discharge pipe (122).

According to the sewage and wastewater purification treatment apparatus of the present invention as described above, it is possible to combine the food waste purification treatment with the purification treatment using the soil-coated contact oxidation method, due to the landfill site selection in the landfill process that has been a problem until now Complaints, odors, and transport movements against local residents will be solved. In addition, by-product sludge can be recycled into organic fertilizers, thereby reducing the sludge treatment cost and naturally solving the problem of animal feed.

The sewage and wastewater purification treatment apparatus of the present invention eliminates the conventional sludge concentration tank and concentrated sludge storage tank and introduces a new process to replace the food waste digestion tank 10 and the sludge storage tank 20 so that sewage and wastewater and food without additional costs. The waste can be combined. In this case, the volume of the food waste fire extinguishing tank 10 may be designed so as to be suitable for the food digestion (scavenging) function by calculating the amount of load added during water treatment by the food waste.

The soil-coated contact oxidation method is highly adaptable to BOD load fluctuations and can obtain a high quality of treated water, so that the sewage and wastewater purification treatment and food waste can be processed in parallel, and the internal circulation function can increase efficiency. have. The sewage and wastewater purification treatment apparatus of the present invention as described above facilitates the installation of facilities when food treatment is to be performed in parallel in the conventional soil-coated contact oxidation facility.

As described above, the configuration and operation of the soil-coated sewage and wastewater purification treatment apparatus having a parallel treatment function of sewage and food waste according to a preferred embodiment of the present invention are shown in accordance with the above description and drawings. Those skilled in the art will appreciate that various changes and modifications can be made without departing from the spirit and scope of the present invention.

According to the present invention as described above, there is no need for a separate facility for the treatment of food waste, economical, there is no complaints that may occur in the process of site selection due to landfill of food waste, there is no traffic caused by leachate and transport, food waste treatment There is no need for separate maintenance, and there is no odor and pathogen scattering due to food decay by soil cover, and it is easy to perform parallel treatment by additional facilities only for soil-coated water treatment facilities. Recycling can reduce sludge disposal costs and greatly simplify administrative management by disposing food waste directly at nearby treatment plants.

Claims (3)

In the soil-coated sewage and wastewater purification apparatus, which covers a maternal network in which a plurality of vents are formed in the upper part of each treatment tank, and makes a soil layer thereon, the vegetation of grass is grown: A food waste digestion tank having an acid pipe for aeration and extinguishing digested sludge by extinguishing injected food waste; Sludge tank for receiving and storing the digested sludge waste in the food waste digestion tank; A sedimentation separation tank for receiving sewage and wastewater introduced through the supernatant and the sewage and wastewater inflow pipes provided by the sludge storage tank for sedimentation and separation; A first contact aeration tank having an aeration pipe for aeration and receiving and aeration of sewage and waste water separated by the sedimentation separation tank; A sedimentation tank for receiving sewage and wastewater aerated in the first contact aeration tank to precipitate sludge; A second contact aeration tank having an aeration pipe for aeration and receiving aeration and wastewater through the precipitation tank; A natural filtration type contact aeration tank for taking natural sewage and wastewater aerated in the second contact aeration tank and filtering it naturally; And Soil-covered sewage and wastewater purification apparatus characterized in that it comprises a discharge tank for receiving the sewage and waste water finally purified in the natural filtration type contact aeration tank, and discharged through the discharge pipe. The soil-coated sewage and wastewater purification treatment apparatus according to claim 1, wherein the food waste digestion tank comprises a partition wall vertically flowing to induce microbial propagation in the tank. According to claim 1, wherein the food waste digestion tank, the first and second contact aeration tank, sedimentation tank, natural filtration type contact aeration tank and discharge tank are interconnected through the sludge transfer pipe, each airlift pump and sludge pump installed inside Soil-covered sewage and wastewater purification treatment device, characterized in that for circulating the sludge through the sludge transfer pipe using.