KR101065274B1 - A treatment method of leachate of site of buried animal husbandry using bm-prbs - Google Patents

Abstract

The present invention relates to a method for treating livestock landfill leachate using a reaction wall, and more particularly, to induce leachate generated from a livestock landfill using a leachate guide wall to a permeable reactive wall, and the water permeable reactive wall. The first stage of treatment of odor, NH ₄ -N, and organic matter contained in the leachate by passing through the front end reaction wall of the leachate, and the leachate after the first treatment process passes through the rear end reaction wall of the permeable reaction wall By the NO ₃ -N contained in the leachate, the second organic treatment step to remove the residual organic material and sterilization, the permeable reaction wall is DS-BB; Charcoal or activated carbon; chaff; sawdust; It relates to a livestock burying leachate treatment method using a permeable reaction wall consisting of a front end reaction wall made of a mixture of mineral material, and a rear end reaction wall made of a mixture of zero iron, steel slag, and waste tire flakes.

Description

A method for treating leachate from livestock buried land using permeable reaction walls, removing odors and preventing groundwater pollution {A TREATMENT METHOD OF LEACHATE OF SITE OF BURIED ANIMAL HUSBANDRY USING BM-PRBs}

The present invention is a odor, NH ₄ -N, B-PRB ((Bio-Permeable Reactive Barrier) layer for the treatment of organic materials and NO ₃ -N, M-PRB (Multi-Permeable Reactive for removing residual organic materials and sterilization Barrier) is a method for treating leachate and odor generated from livestock burying land using permeable reaction walls (BM-PRBs) each consisting of a front end and a rear end, and an apparatus for preventing groundwater pollution. .

Foot-and-Mouth Diesease (FMD) is a virus epidemic that occurs in cows, sheep, pigs, goats, and goats with two hooves, such as cows, sheep, pigs, goats, and goats. The disease is one of the most contagious of livestock epidemics, and livestock in foot-and-mouth disease are killed to prevent further spread of the virus.

However, when the livestock is buried, it is not buried in a place with a certain treatment facility, but a place is selected and buried in an area where foot and mouth disease occurs.

These buried animals are decayed in the ground, and in the process, various bacteria and blood flow into the basement. Furthermore, in rainy weather, dead bodies of livestock are washed away, and various germs and harmful substances generated from buried livestock are accelerated to flow underground to contaminate groundwater and soil.

In addition, contaminated groundwater flows into rivers or streams and pollutes rivers or streams, causing the destruction of various ecosystems and pollution of drinking water sources.

In addition, as various harmful pathogens are introduced into the human body through contaminated water, a second infectious disease occurrence problem may arise, so a method for effectively treating the leachate generated from the livestock burial site should be sought.

As a method for treating leachate, Korean Patent Publication No. 10-2008-0012093 (published date 2008.02.11), Korean Patent Registration 10-0726353 (registration date 2007.06.01), Korean Patent Registration 10-0636617 (registration date 2006.10.13 ), Republic of Korea registered practical 20-0401659 (registration date 2005.11.14), Republic of Korea Patent Registration 10-0218546 (Registration date 1999.06.10), but a number of patent technologies have been disclosed, but the patents disclosed above are generated from a livestock burial site Since the harmful pathogens and organics that can not be effectively blocked are those that do not meet the purpose to achieve in the present invention.

Republic of Korea Patent Publication 10-2008-0012093 (published 2008.02.11) Republic of Korea Patent Registration 10-0726353 (Registration Date 2007.06.01) Republic of Korea Patent Registration 10-0636617 (Registration Date 2006.10.13) Korea Registration Practical Use 20-0401659 (Registration Date 2005.11.14) Republic of Korea Patent Registration 10-0218546 (Registration Date 1999.06.10)

In order to effectively treat various harmful bacteria, organic substances, odors, NH ₄ -N, NO ₃ -N contained in leachate generated from livestock burying land caused by livestock epidemic or buried by various factors, Block (hereinafter referred to as 'DS-BB'); Charcoal or activated carbon; chaff; sawdust; Using a permeable reaction wall (BM-PRBs) made of a front-end reaction wall (B-PRB) made of a mixture of minerals and a rear-end reaction wall (M-PRB) made of a mixture of scrap steel, steel slag, and waste tire flakes. It is an object of the present invention to provide a method for treating livestock landfill leachate.

In order to achieve the above object,

The present invention comprises the steps of inducing the leachate generated from the livestock burying land using the leachate guide wall to the permeable reaction wall,

A first treatment step of treating odors, NH ₄ -N, and organic substances contained in the leachate by passing through the front reaction wall of the permeable reaction wall;

Passing the leachate after the first treatment is passed through the rear end reaction wall of the permeable reaction wall consisting of a secondary treatment step of NO ₃ -N contained in the leachate, residual organic material treatment and sterilization treatment,

The permeable reaction wall is DS-BB; Charcoal or activated carbon; chaff; sawdust; The main technical configuration is a livestock buried leachate treatment method using a permeable reaction wall composed of a front end reaction wall made of a mixture of a mineral material and a rear end reaction wall made of a mixture of zero iron, steel slag, and waste tire flakes.

And, the permeable reaction wall is DS-BB 10 ~ 35wt%; Charcoal or activated carbon 10-35wt%; Rice husk 10-35 wt%; Sawdust 10-35 wt%; Shear part reaction wall made of a mixture of a mixture of mineral zeolite 10 ~ 35wt%; in the form of a pack using a frame,

It is characterized in that the mixture consisting of 68 ~ 85wt%, steel slag 2 ~ 20wt%, waste tire flakes 10 ~ 30wt% of the mixture made of a rear end reaction wall made in the form of a pack using a frame It is done.

The method for treating livestock leachate and odor removal and groundwater pollution prevention using the permeable reaction wall according to the present invention has the following effects.

first. DS-BB; Charcoal or activated carbon; chaff; sawdust; It is a B-PRB shear-section reaction wall made of a mixture of minerals, which can effectively treat various odors, organic matter, and NH ₄ -N contained in the leachate, and also consists of mixing of ferrous iron, steelmaking slag, and waste tire flakes. The treatment of harmful bacteria, NO ₃ -N and untreated organic matter by the rear end reaction wall, which is M-PRB, can effectively treat the leachate generated from the livestock investment pond.

second. At low cost, the permeable reaction wall can be installed in the livestock burying site, so the leachate treatment of the livestock burying land can be processed at low cost.

third. Leachate treatment does not require additional equipment for transport and water treatment.

fourth. Lower costs for operation and maintenance after the installation of a permeable reactive wall.

fifth. Since it is installed underground, there is no restriction on land use on the ground, and it can be purified in situ (In-Situ) while maintaining the flow of contaminated leachate and ground water. Not required.

1 is a view showing a livestock investment land leachate treatment process using a permeable reaction wall according to the present invention.
Figure 2 is another view showing a livestock investment pond leachate treatment process using a permeable reaction wall according to the present invention.
3 is a view showing that the livestock buried leachate treatment process using the permeable reaction wall according to the present invention according to the flow direction of the leachate is made.
Figure 4 is a cross-sectional view showing the configuration of the apparatus for treating livestock leachate leachate according to the present invention.
5 is a perspective view showing a bioblock (DS-BB) according to the present invention.

The detailed contents of the above-described technical configuration will be described with reference to the drawings.

1 is a view showing a livestock investment land leachate treatment process using a permeable reaction wall according to the present invention.

As shown in FIG. 1, in a livestock buried land, blood and various harmful bacteria generated from buried livestock continuously penetrate underground to contaminate groundwater, and furthermore, due to the collapse and loss of livestock buried by rainy weather, etc. The phenomenon is accelerating.

Leachate from livestock burial grounds contains large amounts of Salmonella, Food Poisoning, Anthrax, Escherichia coli, and Viruses, which are transmitted from livestock infected by pathogens, and when such harmful bacteria are transmitted through contaminated groundwater, It causes a second epidemic, such as high fever, bleeding, pneumonia, typhoid fever, and food poisoning.

In addition, the organic matter and nitrate nitrogen contained in the leachate causes eutrophication when introduced into the lake, causing the pH of the ecosystem changes, causing the disruption of the ecosystem.

Therefore, in order to solve this problem, it is necessary to effectively treat the leachate generated from the livestock buried land to prevent contamination of drinking water sources such as groundwater, and to prevent contamination of the appeal to prevent destruction of the ecosystem. In particular, harmful bacteria from livestock burial sites are spread to people and cause secondary infectious diseases. Therefore, treatment of leachate from livestock burial sites is very urgent.

As shown in FIG. 1, the leachate generated from the livestock burial ground is introduced into the ground to contaminate the groundwater, and also flows into the river and the lake to spread the water pollution. Therefore, the permeable reaction wall according to the present invention is installed at the point where the leachate or contaminated groundwater penetrates so that the leachate or contaminated groundwater flows at the same time as it flows naturally (FIG. 2).

In other words, the method for treating livestock landfill leachate using the permeable reactive wall according to the present invention is to form a wall of reactive material (applicable to iron, microorganisms) that is effective for treating contaminants in leachate or contaminated groundwater flow paths in a subsurface. It will be installed by treating the pollutant contained in the leachate through adsorption, reaction, decomposition and desalination.

It will be described in detail for each step of the livestock buried leachate treatment method using a permeable reaction wall according to the present invention.

Leachate Induction Stage

In order to efficiently treat the leachate generated from the livestock burying land, it is a process of naturally leading the leachate to the position where the permeable reaction wall 20 is installed. That is, the leachate or contaminated groundwater is collected naturally into the permeable reaction wall 20 without disturbing the flow of the leachate or contaminated groundwater. At this time, the leachate induction wall 10 is installed around the leachate generation.

Primary processing stage

Leachate induced by the permeable reaction wall 20 passes first through the shear part reaction wall 201 installed at the front end of the permeable reaction wall, and at this time, the odor contained in the leachate, NH ₄ -N, organic The processing of the material takes place.

The shear reaction wall 201 is DS-BB; Charcoal or activated carbon; chaff; sawdust; The mixture formed by the mixing of the mineral; is produced in the form of a pack using a frame.

The composition of the mixture is to vary the mixing ratio according to the contamination of the leachate, but to suggest a more specific range, DS-BB 10 ~ 35wt%; Charcoal or activated carbon 10-35wt%; Rice husk 10-35 wt%; Sawdust 10-35 wt%; 10 to 35 wt% of zeolite, which is a mineral, is used.

The DS-BB is used to effectively remove the volatile organic compounds contained in the leachate. The DS-BB is heated and melted in an extruder to form a cylindrical having a mesh shape using two nozzles during extrusion. Microbial carrier to be processed. The DS-BB, as shown in Figure 5, by forming the pleated jaw portion 101 on the inner surface and the outer surface of the mesh cylindrical cylinder 100 to facilitate the attachment and propagation of microorganisms.

When the amount of DS-BB is less than 10wt%, it is difficult to expect the effect of removing volatile organic compounds. When the amount of DS-BB exceeds 35wt%, the amount of other components is relatively reduced, and thus the odor, NH ₄ -N, and the like are removed. Since it may fall, the amount of the DS-BB is preferably maintained in the range of 10 to 35wt%.

The charcoal is a solid product, also called charcoal, which is produced by heating wood with air cut off, or with very little air. As a material of charcoal, solid wood is generally used. In Korea, oak trees (brown oak, oyster oak, water oak, row oak) and bamboo are mainly used.

The size and structure of the charcoal is somewhat different depending on the species, but in general, the internal surface area of the charcoal is about 100 pyeong (about 300㎡) per 1g of charcoal, and the bamboo charcoal is about 50 ~ 300㎡. Charcoal is 70 to 90% of the carbon crystal. However, charcoal is not just made up of carbon, but contains many minerals that were contained in wood. These particles form a labyrinth, which, when carbonized, becomes pores of char and makes the adsorption capacity of char.

Fundamentally, adsorption is the accumulation of adsorbate molecules on the adsorbent surface and the amount of material that can be adsorbed depends on the surface area of the adsorbent. In this relationship, the external surface area only plays a secondary role. Adsorption phenomena are caused by the interrelationship between the adsorbent and the surface of the adsorbent. The adsorption phenomena change depending on the size, structure, polarity and conformation of the adsorbent molecules and the pore structure, surface area and surface properties of the adsorbent. ) And sensitive to pH.

In the present invention, a mixture of white charcoal and bamboo carbonized with oak at a temperature of 900 to 1,000 ° C. in a conventional charcoal kiln is mixed at a 1: 1 weight ratio of bamboo charcoal produced by an indirect heating carbonization method at 600 ° C., followed by a dryer of 100 to 110 ° C. Dry the charcoal for 3 hours to remove impurities and water, then use the cooled charcoal.

Adsorption is the most widely used deodorizing method to remove odorous substances. Activated carbon has been used as a representative adsorbent for a long time as a carbon material having various pore structures. Activated carbon has a specific surface area, poorly developed pore structure, and because of its hydrophobic surface chemical property, it has low adsorption affinity to water vapor and high adsorption affinity for low concentration gas. It is advantageous to. The raw material of the activated carbon may be variously used, such as wood, sawdust, palm, etc. More preferably, carbonized chaff is used.

That is, in the present invention, after the chaff was cut off from air and carbonized at 700 ° C. for 2 hours in a nitrogen atmosphere, an average carbon yield of 30.3% and a specific surface area of 220 m 2 / g were obtained, followed by potassium hydroxide with a purity of 85%. The mixed ratio of rice husk was 4: 1 in weight ratio, the temperature was raised to 10 ° C./min in a nitrogen atmosphere, and activated at 850 ° C. for 3 hours. The specific surface area was 2,600 to 2,800 m 2 / g and the micropore volume was 1.1 to 1.4. Use high performance activated carbon, cc / g.

When the amount of the charcoal or activated carbon is less than 10wt%, the odor removal function may be lowered, and when the amount of the charcoal or activated carbon is more than 35wt%, the amount of other components may be relatively reduced, so that the adsorption of organic matter may be deteriorated. It is preferable to keep the silver in the range of 10 to 35 wt%.

The rice husk is a by-product of rice milling, consisting of cellulose 32.24%, hemicellulose 21.34%, lignin 21.44%, etc., does not dissolve in water, and has excellent chemical stability and has excellent adsorption characteristics. And, the chaff shows a high adsorption rate between pH 4 ~ pH 6. The maximum adsorption amount according to the Langmuir model is Pb 120.48 mg g ^-1 and Cu 31.85 mg g ^-1 .

If the amount of chaff is less than 10wt%, the odor removal functionality may be reduced, and if it exceeds 35wt%, the adsorption functionality of organic matter may be relatively low, so the amount of chaff is used within the range of 10 to 35wt%. It is desirable to maintain.

The sawdust has various organic structures such as lignin, cellulose, hemicellulose and polyphenolic groups capable of adsorbing heavy metals. The reason why the sawdust adsorbs hexavalent chromium is that cellulose and lignin, which are the main constituents of sawdust, have a large amount of alcohol, phenolic, hydroxy group and methoxy group as functional groups to form hexavalent chromium and chelate. Reduction is due to aldehyde groups, another functional group of lignin, the main component of sawdust.

Oak sawdust has high adsorption capacity for hexavalent chromium, low ability to reduce hexavalent chromium, fir and poplar sawdust shows high adsorption amount for NaOH, and the maximum adsorption amount according to Langmuir model is poplar sawdust. Cu is 6.92 mg g ⁻¹ , Zn 15.83 mg g ⁻¹ , and fir sawdust is Cu 12.70 mg g ⁻¹ , Zn 13.41 mg g ⁻¹ .

In the present invention, the composition of the sawdust using a mixture of oak, fir and poplar sawdust, more specifically sawdust consisting of a mixture of oak sawdust 30 ~ 50wt%, fir sawdust 20 ~ 30wt% and poplar wood sawdust 20 ~ 30wt% Use a mixture.

When the amount of the sawdust is less than 10wt%, it is difficult to expect the adsorption functionality of harmful substances by sawdust, and when the amount of the sawdust exceeds 35wt%, the amount of other components may be relatively reduced, so that the adsorption of organic matter may be deteriorated. It is preferable to keep the silver in the range of 10 to 35 wt%.

The minerals are zeolite, bentonite, nontronite, montmorillonite, baydellite, illite, grauconite, dikite ), Halloysite, Metahalloysite, Penniteite, Pyropyllite, Haloysite, Vermiculite, Antigorite, Saponite At least one mineral selected from hectorite, beidellite, smectite or porcellanite is used, and more preferably zeolite is used.

The zeolite neutralizes or has a particle size of 1 ~ 3mm or washed with distilled water to remove the fine particles or impurities on the surface, dried at 100 ~ 110 ℃ to remove moisture, total ion exchange capacity is 1.6 ~ 2.0 meq / g, physical strength of 329 ~ 366g, the drug for the regeneration of zeolite is characterized in that NaHCO ₃ .

Zeolite, also called zeolite, is a natural mineral produced by the action of three volcanic ashes in the New Era, which contains alkali and alkaline earth metals, and is a hydrous alumina silicate mineral in which water molecules are present in the form of crystal water. The bonds of the atoms in the crystal structure are loose, and even when the moisture filling the spaces is released at high heat, the skeleton remains the same, so that other fine particles can be adsorbed. This property is used as an adsorbent and used as a molecular sieve to separate particulates of different sizes.

As such, zeolite has absorbency, adsorption property, catalytic property and ion exchange property, so that it can be reversibly dehydrated and hydrated without destroying the structure crystal, and thus it is used as a powerful desiccant and has pores, channels, and cavities. It is also used as an excellent adsorbent. In addition, it is widely used in soil improvers, fertilizer mixtures, pesticide extenders, red tide preventives, and petroleum refining agents. It has excellent ion exchange ability, and it has various heavy metal ions and ammonium ions in agriculture and industrial wastewater. It is applied to the removal of environmental pollutants such as the removal of nitrogen, phosphorus and gaseous gases. Zeolite contains a small amount of cations such as Na, K, Ca, Mg, Sr and Ba, and all oxygens of (Si, Al) O ₄ tetrahedron, which is one of the basic units of silicate mineral, are shared by another tetrahedron. It belongs to the three-dimensional network of silicate minerals. Quartz and feldspar group minerals, which are the same silicate minerals, form a dense structure (specific gravity: 2.6 to 2.7), while zeolites are coarse (specific gravity: 2.0 to 2.3) to form a cavity (diameter 2.3 to 7.5 mm). . The size of the cavity in the zeolite structure is usually determined by the shape of the oxygen ring and the number of oxygen at 4 to 12 oxygen at the cavity inlet. Therefore, the size of the cavity is different depending on the type of zeolite mineral. _{(Si, Al) O 4 Si} 4 + in the tetrahedral cations are often introduced into the structure in order to compensate for the charge deficiency that occurs as part substituted by Al ⁺ _3. Unlike feldspars, zeolites form structural cavities in the minerals, and because cations are present, these cations can be easily replaced by other cations around them. Also, depending on the composition of these cations with high charge in the cavity, large amounts of water molecules (usually 10-18 wt%) are introduced into the cavity.

When the amount of the mineral used is less than 10wt%, there is a problem in that the treatment efficiency of NH ₄ -N is lowered, and when the amount of the mineral is used exceeds 35wt%, the use of other components may be relatively reduced, thereby reducing the efficiency of odor removal. The amount of the mineral used is preferably kept in the range of 10 to 35wt%.

Secondary processing steps

The leachate after the first treatment passes through the rear end reaction wall 202 installed at the rear end of the permeable reaction wall, and removes NO ₃ -N contained in the leachate, residual organic matter, and It is sterilized.

The rear end reaction wall 202 is produced in the form of a pack (pack) by using a frame (frame) a mixture composed of a mixture of zero iron, steelmaking slag, waste tire flakes.

The mixing ratio of the mixture depends on the contamination of the leachate, but to present a specific range, a mixture composed of a mixture of 70 ~ 85wt%, 2 ~ 20wt% steel slag, 10 ~ 30wt% waste tire flakes .

The ferrous iron uses iron particles produced as by-products during iron processing in a machine lathe operation, wherein the maximum diameter of the iron particles is 7.0 to 10.0 mm, and the specific surface area is 0.57 to 0.65 m 2 / g. Since the iron particles are by-products generated during iron processing, the surface of the iron particles may have various machine oils and cutting oils, and it is preferable to use them after removing such foreign substances. To remove foreign substances, iron particles are washed with one or more organic solvents selected from alcohol (methanol, ethanol, etc.), benzene, toluene, and ether to remove various oils on the surface, and the iron particles are air-dried and then the surface is dried. By acid treatment.

When the iron particles thus treated are brought into contact with the chlorine-based organic compound present in the leachate, a dechlorination reaction occurs through a reaction as in the following Chemical Formula 1,

As in Formula 2, strong sterilization of OH radicals generated by reacting iron with water occurs.

[ Formula 1 ]

^{Fe 0 = Fe 2 + + 2e} - ( oxidation)

^{RCl + 2e - + H + =} RH + Cl - ( reduction)

^{Fe 0 + RCl + H + =} Fe 2+ + RH + Cl - ( overall reaction)

[ Formula 2 ]

_{^{Fe 0 + 2H 2 O → Fe}} 2 + + H 2 + 2OH -

In addition, the removal of heavy metals by iron particles is performed by the process of precipitation and adsorption of heavy metals. Many heavy metals in leachate exist in the form of ions, and their presence varies depending on pH. To change.

Looking at the reaction of the formula (1), when the leachate showing a neutral pH reacts with the iron particles, the pH is increased by the consumption of hydrogen ions, and as the pH is increased heavy metals in the leachate combined with the OH group Amorphous precipitates are formed and adsorbed on the iron particle surface and are removed in leachate. Nitrate (NO ^{3 −} ) in leachate is reduced by reaction with iron particles, converted to nitrogen gas (N ₂ ), and degassed. Phosphate (PO ₄ ^{3 −} ) is combined with calcium (Ca) or other heavy metals in leachate. Hydroxyapatite (Ca ₁₀ (PO ₄ ) ₆ (OH)) to form a precipitate is removed.

When the amount of the ferrous iron is less than 70wt%, it is not easy to remove harmful substances such as nitrates in addition to sterilization function, and when it exceeds 85wt%, it may not be easy to process residual organic matters. The amount of is preferably maintained in the range of 70 ~ 85wt%.

The steelmaking slag is a heavy metal such as nickel and zinc present in the contaminated leachate is difficult to remove only by the reaction of the iron particles, the present invention uses the steelmaking slag together with the iron particles. Such steelmaking slag has a very high pH, so that various heavy metals can be precipitated and removed by adsorption. In particular, the calcium provided in the steelmaking slag allows the removal of large amounts of phosphate in contaminated leachate.

When the amount of the steelmaking slag is less than 2wt%, the functionality of removing heavy metal particles is inferior, and when the amount of the steelmaking slag is exceeded 20wt%, the amount of the other components may be relatively reduced, so that functionality such as adsorption of organic matter may be lowered. It is preferable to keep the silver in the range of 2-20 wt%.

The waste tire flakes are steadily increasing every year due to the development of industry and the increase of automobile supply, and these waste tires are mostly incinerated, and circular use or processing is insignificant. The biggest problem among the disposal of waste tires is that a large amount of untreated waste tires are buried or left unattended, resulting in environmental pollution and social problems such as habitats of pests, danger of fire, and adverse effects on urban aesthetics. will be.

Waste tires can be pulverized to a desired size using a conventional crusher, but it is preferable to process the used tire to a size of 5.0 to 7.0 mm in consideration of a diameter which does not disturb the groundwater flow and is not blocked by microorganisms.

The surface of the waste tire flakes contains a large amount of foreign substances that inhibit the growth of microorganisms and block the pores of the waste tire flakes. The waste tire flakes of 7.0 mm size are washed with distilled water, immersed in weak acid of 0.01 ~ 0.3N HNO ₃ for 24 hours, and then washed several times with distilled water until the pH is neutral.

In the weak acid, when using HNO ₃ of 0.01N or less, the internal void activation of waste tire flakes is not performed well, and even when HNO ₃ of 0.3N or more is used, the activation is not performed well, so that HNO ₃ of 0.01N to 0.3N is used. In particular, it is preferable to use 0.1 N HNO ₃ .

The hydrophilic treatment of such waste tire flakes not only allows microorganisms to attach well, but also forms many spaces inside the waste tires so that many microorganisms can be attached.

Then, the hydrophilic treated waste tires were put in a reaction vessel and the anaerobic or aerobic sludge of the sewage treatment plant was put together with nutrient solution, and then cultured at 25 ° C. for 28 to 32 days, and many microorganisms adhered to the surface and internal pores of the waste tires. Biological carriers are prepared by forming biofilms.

The nutrient solution was filled with distilled water at 50% in a 1 L volumetric flask, 2.126 g of Sodium Acetate, 1.857 g of Glucose, and 4 ml of Nutritious were added. Use the manufactured one.

When the amount of the waste tire flakes is less than 10wt%, the organic material may not be completely processed. If the amount of the waste tire flakes exceeds 30wt%, the amount of other components may be relatively reduced, so that sterilization and NO ₃ removal functionality may be reduced. , The amount of the waste tire flakes is preferably maintained in the range of 10 ~ 30wt%.

In relation to the leachate treatment process, the purification process by the permeable reaction wall is clearly shown in FIG. 3, and FIG. 4 shows the configuration of the permeable reaction wall. That is, as shown in Figures 3 and 4, the leachate generated from the livestock investment pond is primarily through the shear-reaction wall of B-PRB odor, NH ₄ -N, organic material removal reaction occurs first In addition, the untreated organic material and NO ₃ -N treatment and sterilization occur at the front end while passing through the rear end reaction wall, M-PRB.

In addition, in order to treat leachate from livestock burial site, the amount of generation should be estimated within a certain range, and the generation amount can be predicted by using the data released by the US Department of Agriculture Animal and Plant Quarantine Service. / 2/2 months, for pigs 12L to 24L / horse / 2 months.

And, Table 1 below shows the quantity of the reaction wall according to the buried land area.

5M × 10M
(50㎡) 10 M × 10 M
(50㎡) 10 M × 20 M
(50㎡) 10 M × 30 M
(50㎡) Induction wall 24M 28M 34M 44M B-PRB 7M 8M 9M 10M M-PRB 7M 8M 9M 10M

Livestock investment pond leachate treatment method using a permeable reaction wall according to the present invention is DS-BB; Charcoal or activated carbon; chaff; sawdust; By placing B-PRB made of a mixture of minerals in front of the reaction wall, it is possible to effectively treat the leachate generated from the livestock investment pond, and the construction of the reaction wall is simple, so the industrial applicability is very high.

In addition, the leachate treatment method according to the present invention, in addition to the leachate treatment from the livestock burying land, if it is difficult to directly treat the contaminant such as leachate of the unsanitary (bad) landfill, acid drainage contaminated with heavy metals of the waste mine and gunpowder of the shooting range, etc. It has the advantage of being applicable. And it can prevent the spread of pollution to the surroundings by removing only pollutants without disturbing the flow of leachate or contaminated groundwater.

10: Leachate Induced Wall
20: reaction wall
201: front wall reaction wall
202: rear end reaction wall

Claims (5)

Using the leachate guide wall (10) to guide the leachate generated from the livestock buried to the permeable reaction wall (20),
Passing through the front end reaction wall 201 of the water-permeable reaction wall 20, the primary treatment step of treating odor, NH ₄ -N, organic substances contained in the leachate,
Passing the leachate after the first treatment through the rear end reaction wall 202 of the permeable reaction wall 20 to the secondary treatment step of NO ₃ -N contained in the leachate, residual organic material treatment and sterilization treatment Made up of
The permeable reaction wall 20 is a bio block; Charcoal or activated carbon; chaff; sawdust; In the front end reaction wall 201 made of a mixture of mineral material, and the rear end reaction wall 202 made of a mixture of zero iron, steelmaking slag, and waste tire flakes,
The shear part reaction wall 201 is 10 ~ 35wt% bio block;
The rice husk was blocked with air and carbonized at 700 ° C. for 2 hours to obtain an average carbonization yield of 30.3% and a specific surface area of 220 m 2 / g, followed by a mixture of 85% pure potassium hydroxide and carbonized rice husk. Activated carbon having a weight ratio of 4: 1, heated to 10 ° C./min in a nitrogen atmosphere and activated at 850 ° C. for 3 hours, having a specific surface area of 2,600 to 2,800 m 2 / g and a fine pore volume of 1.1 to 1.4 cc / g. 10 to 35 wt%;
Chaff 10-35wt%; and,
Oak sawdust 30 ~ 50wt%, fir sawdust 20 ~ 30wt%, poplar sawdust mixture 10 ~ 35wt% consisting of 20 ~ 30wt%;
10-35 wt% of mineral zeolite; a mixture made of a mixture using a frame made of a pack (pack) using a permeable reaction wall leachate treatment, odor removal and groundwater How to avoid contamination.

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