KR0165947B1 - Soil coating type waste water purification method and device thereof - Google Patents

Abstract

The present invention relates to a method and apparatus for purifying sewage, sewage, and sewage by using soil microorganisms and soil animals of the surface natural ecosystem, and in particular, by treating them by a non-powered method of a waterfall filtration tank and a fishery infiltration trench structure. The quality of the effluent is kept below the limit.

A primary treatment step by contact reaction of a suspension microorganism, that is, anaerobic microorganism, in an anaerobic decay tank, which is a pretreatment facility consisting of a precipitation separation tank 12, 13, a contact separation tank 14, 15, and a precipitation filtration tank 16; Primary treatment sewage introduced through the connecting pipe (19) in the aeration tank 24 consisting of the main fountain tank 22 and the sub fountain tank 23 tank aeration in a natural flow method to the secondary treatment step using anaerobic and aerobic bacteria ; A third treatment step of purifying and infiltrating the soil while passing the sewage treated with anaerobic and aerobic flow into the flow path capillary 31 of the fishing infiltration trench structure; And a part of the sewage purified from the flow path tube 31 is transferred to the soil-type filter 41 through the hole 31b of the flow path tube 31 is accurate, and a part of the sewage flows out through the through hole 31b 'of the hole. It is characterized by the configuration including the fourth treatment step to be finally discharged and purified by flowing into the blind culvert (42).

Description

Soil-covered sewage purification method and apparatus

The present invention relates to a method and apparatus for purifying sewage such as manure and domestic wastewater by using soil microorganisms and soil animals of the surface natural ecosystem, and in particular, by treating them by a non-powered method of a waterfall filtration tank and a fishery infiltration trench structure. The present invention relates to a soil-covered sewage purification method and apparatus for maintaining the water quality of discharged water below an allowable standard and at the same time reducing part of the treated water to groundwater to prevent depletion of groundwater and to be supplied with moisture and nutrients necessary for plant growth.

The so-called soil purification method is a method in which soil microbial soil animals within about 1 m of the ground surface infiltrate the treated water treated in the soil-type sewage septic tank or manure septic tank in a viable soil area. same.

The conventional soil-type sewage purification plant related to the present invention has a pretreatment step of sending sewage introduced into the storage tank to the sedimentation tank to settle the debris, as shown in FIG. The aerobic microorganisms, which are sent and mixed with the air, allow the aerobic microorganisms active in the sewage to flourish, and then be supplied to the flow path embedded in the soil through the main supply pipe. Small soil animals such as earthworms and slugs come through to decompose organic matter contained in the sewage and send a part of it through the pores of the flow path to be decomposed in the soil. It is configured to be completely purified and discharged to the outside.

That is, the flow path is formed as a cylindrical conduit, and a plurality of pores are formed to pass through the micro animal and the purified sewage, and a waterproof membrane is installed at the bottom of the trench with a predetermined depth and sand having excellent absorbency thereon. After proper stacking, the gravel, which is easily adsorbed by microorganisms, is placed on the sand, and then the above-described flow path is installed, and then the gravel is covered with a predetermined thickness, and then covered with a waterproof membrane formed with holes, and finally the soil is buried therein. To sewage from the sedimentation tank and the aeration tank to secondary treatment.

However, the conventional soil-type sewage purification method has several problems as follows.

First of all, the overall length of the flow path for purification of the sewage is relatively short, so that the sewage leaked out through the hole in the flow path moves to the saturation state in the upward and transverse directions by capillary action of gravel, sand and soil.

In this case, sewage moves the soil surface to saturation state, thus inhibiting the composition of soil conditions suitable for various aerobic microorganisms and soil micro-animals (protozoa, earthworm, centipede, etc.), so that 100% of the soil ecosystem is not utilized. At the same time, the ability to remove nitrogen, phosphorus, and E. coli is reduced, and a separate disinfection device is required, and problems such as pollution of rivers and lakes and damage to crops caused by nitrogen and phosphorus when discharged from treated water emerge. .

In addition, the conventional soil-type sewage purification method is difficult and small-scale dispersion treatment and maintenance is a lot of maintenance costs.

In other words, in areas such as group facilities or parks or golf houses where the sewage sources are not concentrated, there are excessive collection facilities to the sewage treatment plant, or relay pump facilities are required due to the topographical factors. The aeration tank, which is the treatment stage, requires the installation of a separate broa pump facility.

Or, the conventional soil-type sewage purification method is difficult to maintain stable functions in cold and cold climates, and it is impossible to reuse the final treated water, and the end-of-life treatment plant generated by long-term adoption projects or annual implementation projects or new facilities. If it is needed, it is not suitable to be treated alone, and there is a problem of excessive preliminary construction of the treatment plant considering the future capacity, and in particular, it is not possible to expect the allowable limit value of discharged water (below BOD 10 PPM).

The present invention has been made in order to solve the above-mentioned conventional problems, and is highly processed to maintain the allowable standard value of discharged water (BOD 10 PPM or less) and prevents the generation of environmentally effluent by almost no generation of discharged water, maintenance and maintenance costs It is an object of the present invention to provide a soil-coated sewage purification method and apparatus for maintaining a low cost and stable function even in a cold and cold climate.

Soil-covered sewage purification method of the present invention for achieving the above object, the first treatment step by the contact reaction of the suspension microorganisms, that is, anaerobic microorganisms in the anaerobic decay tank which is a pretreatment facility consisting of a sedimentation separation tank, a contact separation tank, a precipitation filtration tank ; A second treatment step using anaerobic and aerobic bacteria in aerobic filtration fountain, that is, aerated tank for naturally treated primary sewage; A third treatment step of allowing the sewage treated in anaerobic and aerobic secondary to be passed through the flow path capillary of the fisheye infiltration trench structure to be purified; And a part of the filthy water purified from the euro capillary is discharged through the pore of the euro capillary and transported to a soil type filter to be purified, and a part of the sewage is introduced into the blind pit to be purified and finally discharged. do.

In addition, the soil-coated sewage purification apparatus of the present invention for performing the method, the sewage separation tank 1 and 2 chamber, the sewage separation tank 1 chamber and 2 chamber sewage is introduced into the sewage pipe through the sewage pipe passage A primary treatment device having one and two contact filtration tanks purified by a contact agent, and a sediment filtration tank for reprecipitating sewage from the one and two contact filter baths; A secondary storage device formed of aeration tanks connected to each other by a connecting pipe; and having a flow path tube connected to an outer sub fountain of the filtration fountain and forming an air hole and a hole. Each of the flow path tube is a tertiary treatment device having a fishing infiltration trench structure; a soil type filter connected to the tertiary processing device and a soil type filter connected to the soil type filter and installed under the flow path tube. It characterized in that it comprises a configured fourth processor.

Due to the features of the method and apparatus, the present invention is suitable for the treatment of small and medium scale single or combined manure and household wastewater, and can be distributed around buildings or toilets that cause sewage generation, and to sewage treatment plants (end treatment plants). It is not necessary to install pipelines for collecting and discharging wastewater, and in particular, it is possible to solve the difficulties that were difficult to collect in geographic areas such as group or single facility district, rural living sewage and livestock wastewater, and public toilet in the park. It has advantages such as excellent water quality (below BOD 10 PPM) and prevention of depletion of ground water.

1 is a process chart for explaining the conventional soil type sewage treatment step.

2 is a process chart of the soil coating type sewage purification method according to an embodiment of the present invention.

3 is a plan view showing the overall configuration of the apparatus according to the present invention.

4a is a cross-sectional view showing a specific configuration of the primary processing apparatus according to the present invention.

4b is a side sectional view showing a specific configuration of a primary processing apparatus according to the present invention.

5a is a cross-sectional view showing a specific configuration of a secondary processing apparatus according to the present invention

5b is a side sectional view showing a specific configuration of a secondary processing apparatus according to the present invention.

6 is a cross-sectional view showing the specific configuration of the tertiary treatment apparatus according to the present invention.

7 is a plan view showing the bottom configuration of the flow path capillary of the tertiary treatment apparatus according to the present invention.

Figure 8 is a bottom view showing the configuration of the lid portion of the flow path capillary of the tertiary treatment apparatus according to the present invention.

9 is a cross-sectional view for explaining a soil filter of the fourth treatment device according to the present invention.

10 is a side cross-sectional view for explaining the blind culling of the fourth treatment device according to the present invention.

* Explanation of symbols for main parts of the drawings

10: 1 Primary treatment device 11: Second collecting pipe

12, 13: Sedimentation tank 14, 15: Contact separation tank

16: Sedimentation filtration tank 17: Sludge chamber

18: contact room 19, 25: connector

20: secondary treatment device 21: bulkhead

22: main fountain 23: sub fountain

24: aeration tank 30: tertiary processing device

31: Euro capillary 31a: No study

31b: The mining department 32: The opening

33: partition 34: cover

35: (wrinkle pipe) contact agent 40: 4th processing apparatus

41: (soil) filter 42: discharge pipe

45: sneakers 50: contact agent

46: impermeable membrane 48: (crushed stone) gravel

49: Maternal network 51: (breathable) soil

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

1 is a process chart of the soil-coated sewage purification method according to an embodiment of the present invention.

As shown in FIG. 2, the soil-coated sewage purification method of the present invention is an anaerobic pretreatment facility composed of a sedimentation separation tank 12, 13, a contact separation tank 14, and a precipitation filtration tank 16. First treatment step by the contact reaction of the suspension microorganisms, that is, anaerobic microorganisms in the decay tank; Aeration tank (24) consisting of the main treatment tank 22 and the sub fountain tank 23 to the first treatment sewage introduced through the connecting pipe (11) A) secondary treatment step using anaerobic and aerobic bacteria by aeration in a natural flow method; A third treatment step of purifying and infiltrating the soil while passing the sewage treated with anaerobic and aerobic flow into the flow path capillary 31 of the fishing infiltration trench structure; A portion of the sewage purified from the fish-infiltration trench is transferred to the soil-type filter 41 through the hole of the fish-infiltration trench and is purified, and a portion of the sewage is passed through the hole of the fish-infiltration trench. ), And includes a fourth treatment step that is purified and finally discharged.

The anaerobic decay tank of the first treatment step, the aerobic aeration tank of the second treatment step, the flow path capillary of the third treatment step, and the soil type filter of the fourth treatment step are filled with a certain amount of contact agent to provide an excellent aerobic bacterial group. Try to maximize the format.

Meanwhile, the purification apparatus for performing the above-described purification method will be described with reference to FIGS. 3 to 10.

Figure 3 is a plan view showing the overall configuration of the apparatus according to the present invention, Figures 4a and 4b is a cross-sectional view showing a specific configuration of the primary processing apparatus according to the present invention, Figures 5a and 5b according to the present invention 6 is a cross-sectional view showing a specific configuration of the tertiary processing apparatus according to the present invention, and FIG. 7 is a bottom configuration of the flow path tube of the tertiary processing apparatus according to the present invention. 8 is a bottom view showing the constitution of the lid portion of the flow path capillary of the tertiary treatment apparatus according to the present invention, and FIG. 9 is a sectional view for explaining the soil filter of the fourth treatment apparatus according to the present invention. 10 is a cross-sectional view for explaining a blind crypt of the fourth treatment apparatus according to the present invention.

As shown in FIG. 3, the soil-covered sewage purification apparatus of the present invention is a pretreatment facility and an anaerobic decay tank primary treatment device 10, an aerobic filtration fountain tank and a contact-filled secondary treatment device 20, fishery infiltration It includes a tertiary treatment device (30), which is a flow channel cap of the trench structure, and a fourth treatment device (40) having a soil filter and a blind culvert (45).

This will be described in more detail.

First, as shown in FIG. 4, the primary treatment apparatus 10 includes one settling separation chamber 1 and two chambers 13 and 13, in which sewage flows through the collection pipe line 11, and one settling separation tank 1 and Sedimentation filtration tank for re-precipitating sewage from two contact chambers (14) and two chambers (15) and two chambers (15), and one chamber and two chambers for purifying the sewage by the contact agent (50). (16).

In addition, each bath is formed in the lower sludge chamber 17 and the upper contact chamber 18 is connected to each other by a connecting pipe 19 and the porous aerated soil and the mature organic mixed soil coating on the top.

At this time, the effective capacity of the sedimentation separation chamber 1 chamber 12 and the 2 chamber 13 is 1/2 of the average daily sewage amount, and the effective capacity of the contact separation chamber 1 chamber 14 and 2 chamber 15 is the daily average. The sewage amount is 1/3, and the effective capacity of the sedimentation filtration tank 16 is preferably 1/6 of the daily average sewage amount.

In addition, the filling portion of the contact agent 50 of the decaying tank is preferably to be 1/2 of the total capacity. Meanwhile, as shown in FIGS. 5A and 5B, the secondary treatment apparatus 20 connected through the connection pipe 11 of the primary treatment apparatus has a main fountain 22 around the central partition wall 21. And a naturally-flowing aeration tank 24 divided into sub fountains 23, wherein the main fountain 22 and the sub fountains 23 are connected to each other through a plurality of connecting pipes 25.

In addition, the discharge hole 26 formed in the sub fountain tank 23 is positioned downward from the end of the connecting pipe 25 by a predetermined length so that aeration using a free fall, and the cover 27 is provided at the top to keep warm and It has insulation function.

At this time, it is preferable that the effective capacity of the main fountain 22 is 1/6 of the average daily sewage amount, and the effective capacity of the sub fountain 23 is 1/8 of the average daily sewage amount. In addition, the filling portion of the contact agent 50 of the main fountain tank 22 is preferably set to 1/3 of the total capacity.

Meanwhile, the tertiary processing apparatus 30 connected to the aeration tank 24 of the secondary processing apparatus 20 and installed on both sides of the aeration tank 20 has a plurality of through holes 32 as illustrated in FIG. 6. Each flow path tube 31 having a study (31b) and a non-hole portion (31a) is not formed through the hole and each of the flow path tube 31 is connected to a plurality of nested state to make the length to infinite It is possible to maximize the habitat of the aerobic bacterial population by attaching a corrugated contact contact 35 to the inner surface of the upper cover 34 and the erosion immersion trench structure with the zigzag partition 33 formed on the bottom.

The airless portion 31a is connected to the sub fountain tank 23 of the tertiary treatment device 30, and the oil hole 31b is connected to the soil type filter 41 constituting the following fourth treatment device.

In this case, the non-perforated part 31a is preferably 2/3 of the total extension length, and the perforated part 31b is preferably 1/3 the total extension length, and the filling of the contact agent 50 of the flow path capillary 31 is It is preferable to set it as 30%.

Meanwhile, as shown in FIGS. 9 to 10, the fourth treatment device 40 connected to the third treatment device 30 includes a soil filter 41 connected to the hole 31b of the third treatment device. It consists of a blind culvert 45 installed below the tertiary processing apparatus.

That is, as shown in FIG. 9, the soil filter 41 is connected to the discharge hole 42 of the hole 31a of the tertiary treatment device or the blind ridge 45 and weakly fills the contact agent 50 therein. 1/2 is provided with a lid 43 on the top and provided with a discharge pipe 44 on one side.

In addition, the blind lumber 45 has an impermeable membrane 46 installed below the oil hole 31b of the flow path tube 31, and has a good particle size distribution in which a capillary action can occur. 48) is installed thereon, and the hole part 31b of the flow path tube 31 is horizontally installed.

In addition, a soil pipe 49 having a plurality of through holes is provided below the impermeable membrane 46, and aeration soil 51 is provided above the flow path mother pipe 31.

Reference numeral 52 is a maternal network.

The porous aeration soil 51 is an organic soil suitable for inhabiting soil microorganisms, it is preferable to blend the composition 20% to 80% local soil.

At this time, the groundwater level should be below 1.5m below the ground, and it is not desirable to have a break due to the impermeable layer between the infiltration water and the groundwater vein.

At this time, the soil filter 41 is also preferably insulated to obtain a stable purification effect in winter.

In this configuration, the sewage that penetrates into the soil through the through hole 32 of the oil hole 31b of the flow path tube 31 is purified while passing through the blind rock 45 and then flows into the soil type filter 41 and the soil type. The filter 41 finally purifies the sewage to be discharged into the soil through the discharge pipe 44.

The soil coating type sewage purification method according to this purification device is once again summarized.

[First Step]

First, when sewage flows through the collecting pipe line 11, sludge of relatively large particles is precipitated and removed in a pretreatment facility and an anaerobic decay sedimentation tank 12, 13, and filled in the contact separation tank 14, 15. Purified by contact reaction with the anaerobic microorganism by the contact agent 50, and anaerobic purification treatment by the process of re-precipitation to the fine suspended solids in the precipitation filtration tank (16).

At this time, the top of the sphere is covered with porous aerated soil and matured mixed organic material soil, and plants such as grass are planted therein so that the roots of the plant absorb and decompose phosphorus and ammonia nitrogen generated from the anaerobic decay tank to remove odors. do.

[Secondary Processing Step]

Primary treatment sewage introduced through the connection pipe 11 'is first purified by the contact agent 50 filled and accommodated in the main fountain tank 22 of the aeration tank 24 and through a plurality of connection pipes 25. It naturally falls in the sub fountain tank 23.

At this time, the discharge hole 26 formed in the sub fountain tank 23 is located downward by a predetermined height from the end of the connecting pipe 25, so that the sewage through the connecting pipe 25 falls into the fountain by falling drops. In the tank 23, natural aeration occurs.

In other words, the sewage treated in the pretreatment facility is purified by anaerobic and aerobicity in the aeration tank (24), which is the secondary treatment facility. Can be replaced.

In addition, the upper part is provided with a cover to insulate and insulate, thereby preventing the result of deterioration of purification efficiency due to the temperature drop in winter, which is the most blind spot in the soil type.

[Third Processing Step]

The sewage treated secondly by anaerobic and aerobic flows into each flow path tube 31 having a fishnet infiltration trench structure, and purifies and penetrates the soil.

First, it is purified while passing through the relatively long holeless portion (31a), and then passes through the hole (31b) to purify and penetrates into the soil.

In other words, the contact area of the corrugated tube contactant 35 and the microorganisms attached to the inner surface of the upper cover 34 to be well-ventilated while passing through the non-perforated part 31a and the perforated part 31b is infinite. In order to maximize the aerobic bacterial populations by zigzag partition formed on the bottom to maximize the purification capacity, while passing through the hole (31b) through the plurality of through holes 32 of the purified sewage Some penetrate into the soil.

In addition, part of the sewage penetrating into the soil is accumulated in the impermeable membrane 51 installed below.

The impermeable membrane 46 is installed to block gravity infiltration of sewage, which is sewage in the upward and horizontal directions by capillary action of sand 47, crushed gravel 48, and porous aeration soil 51. It flows in an unsaturated state and permeates or evaporates underground.

In this process, the sewage is used for decomposition or feeding by soil microorganisms and small animals in the soil area formed as the upper cover soil, and is highly processed.

That is, since sewage moves the soil surface to an unsaturated state, conditions suitable for various aerobic microorganisms and soil small animals (protozoa, earthworm, centipede, toktogi) are established so that the soil ecosystem is utilized 100%. It has excellent adaptability to quantitative and qualitative load changes, and its ability to remove nitrogen, phosphorus and Escherichia coli does not require a separate disinfection device.There is no pollution by nitrogen and phosphorus caused by the discharge of treated water. It is suitable for prevention of environmental pollution without damage.

In addition, the hole portion 31b is 1/3 of the total extension length, and is formed shorter than the non-hole portion 31a which is 2/3 of the total extension length, thereby preventing the groundwater exhaustion and reducing the amount of discharged water.

[4th processing step]

Sewage purified in the flow path capillary 31 of the fishing infiltration trench structure is penetrated into the soil in the perforations 31b and is transferred to the soil filter 41 through the impermeable membrane 46.

That is, the filthy water which is finally purified and filtered while passing through the soil contact filter (41) filled contact agent (50) and partially penetrated from the hole (31b) flows into the lower blind culvert (45) and is purified by the soil food. The wastewater discharged from the discharge pipe 42 of the filter 41 is finally discharged into a river or soil or groundwater.

At this time, the soil-type filter 41 is also adiabatic construction has a stable purification effect in winter.

As described above, the soil-coated sewage purification method of the present invention and the apparatus thereof are particularly effective in purifying sewage such as manure and general wastewater using soil microorganisms and soil animals of the surface natural ecosystem. By processing the trench structure in a non-powered manner, it is highly treated to maintain the discharge limit (BOD 10 PPM or less), prevents the generation of effluent and prevents environmental pollution, and the maintenance and maintenance cost is low, In addition, the function is stably maintained even in cold and cold conditions, and at the same time, it reduces the part of the treated water to the groundwater to prevent the depletion of the groundwater and to supply the moisture and nutrition necessary for the growth of the plant.

Claims (3)

A soil type sewage purification method using soil microorganisms and soil animals of a natural ecosystem to purify sewage and sewage from household wastewater; A primary treatment step by contact reaction of a suspension microorganism, that is, anaerobic microorganism, in an anaerobic decay tank, which is a pretreatment facility consisting of a precipitation separation tank 12, 13, a contact separation tank 14, 15, and a precipitation filtration tank 16; Primary treatment sewage introduced through the connecting pipe 11 'is aerated in the natural aeration method in the aeration tank 24 composed of the main fountain tank 22 and the sub fountain tank 23, and the secondary treatment using anaerobic and aerobic bacteria. step; A third treatment step of purifying and infiltrating the soil while passing the sewage treated with anaerobic and aerobic flow into the flow path capillary 31 of the fishing infiltration trench structure; And a part of the sewage purified from the flow path tube 31 is introduced into the blind ridge 45 through the oil hole 31b of the flow path tube 31 to be purified and transported to the soil type filter 41 to be finally purified and discharged. Soil-covered sewage purification method characterized in that it comprises a fourth treatment step. According to claim 1, wherein the sedimentation separation tank (12) (13), contact separation tank (14) (15), sedimentation filtration tank (16), aeration tank (24), flow path cap (31), soil type filter (41) The soil-coated sewage purification method characterized in that the filling of a certain amount of contact agent (50) to maximize the aerobic bacteria group. In the soil type sewage purification device using the soil microorganisms and soil animals of the natural ecosystem to purify the sewage, sewage of household wastewater; The sedimentation separation chamber 1 and 12 and 13 which sewage flows in through the collecting pipe passage 11, and the sewage of the sedimentation separation chamber 1 and 2 are introduced and the sewage is separated by the contact agent 50. A primary treatment apparatus including a contact separation tank (1) and a chamber (15) for purifying, and a precipitation filtration tank (16) for reprecipitating filthy water in the contact filtering tank (1) and 2 rooms; It is connected to the connecting pipe (11 ') of the primary treatment device and has a natural flow-type aeration tank 24 divided into a main fountain tank 22 and a sub fountain tank 23 around the central partition wall 21, Secondary processing device having a cover 27 on the top; A flow path cap 31 connected to the aeration tank 24 of the secondary processing apparatus 20 and having a non-hole part 31a and a hole 31b having a plurality of through holes formed therein; A tertiary processing device in which) is installed; And a quaternary treatment device comprising a mite claw 45 installed below the pore portion 31b of the tertiary treatment device and a soil type filter 41 connected to the mare.