KR101031130B1 - Filter media compositions for deordorization and vacreator therefor - Google Patents

Abstract

PURPOSE: A filter media composition for deodorization and a deodorizing device using the same are provided to improve odor removal effect through a granular structure and low porosity. CONSTITUTION: A filter media composition(11) for deodorization comprises: granular porous expandable clay 55-70 parts by weight having the particle diameter 2-10mm; broken porous expandable clay 15-25 parts by weight having particle diameter 2-10mm; hydrophilic zeolite 3-5 parts by weight having particle diameter 1-3mm; 10 weight% Fe and MgO catalyst 3-12 parts by weight; and permeable mixture compost 10-20 parts by weight.

Description

Filter media composition for deodorization and deodorizer using the same {Filter Media Compositions for Deordorization and Vacreator therefor}

The present invention relates to an environmentally friendly and biological deodorizing filter media composition and deodorizer using the same by effectively converting odors generated from wastewater and sewage treatment plants, various chemical plants, pig farms, etc. into water (H ₂ O) and carbon dioxide (CO ₂ ). More specifically, the deodorizing filter media composition excellent in deodorizing effect is 55 to 70 parts by weight of granular porous expanded clay having a particle diameter of 2 to 10 mm, 15 to 25 parts by weight of broken porous expanded clay having a particle diameter of 2 to 10 mm, and ion exchange capacity. 3 to 5 parts by weight of hydrophilic zeolite with excellent particle diameter of 1 to 3 mm, 3 to 12 parts by weight of 10% by weight Fe / MgO catalyst, and 10 to 20 parts by weight of breathable mixed compost.

The present invention also includes a deodorizer for purifying contaminated air generated in wastewater and sewage treatment plants using the filter media composition for deodorization.

The odor components generated in wastewater and sewage treatment plants, various chemical plants, and pig farms are classified into sulfur (S) odors, nitrogen (N) odors and volatile organic substances (VOCs) odors. The situation is removed by converting into water (H ₂ O) and carbon dioxide (CO ₂ ).

Sulfur-based odor components include hydrogen sulfide (H ₂ S), methyl mercaptan (CH ₃ SH), dimethyldimercaptan {(CH ₃ ) ₂ S ₂ }, and these components are converted into water and carbon dioxide as shown in the following scheme. do.

SRH + O ₂ ⇒ SO ₄ ^-2 or S + CO ₂ + H ₂ O

Nitrogen-based odor components include ammonia (NH ₃ ), trimethylamine {(CH ₃ ) ₃ N}, etc. These components are converted into water and carbon dioxide as shown in the following scheme.

_{N-RH + O 2 ⇒ NO} 3 - + CO 2 + H 2 O

Volatile organic odor components include benzene, toluene, ethylbenzene, xylene, ketones, alcohols, aldehydes, and the like, and these components are converted into water and carbon dioxide as shown in the following scheme.

CnHm + O ₂ ⇒ CO ₂ + H ₂ O

Particularly, when hydrogen sulfide (H ₂ S), which is a sulfur-based malodorous component, is 30 ppm or more, sulfuric acid (H ₂ SO ₄ ) is formed by reaction with water (H ₂ O), so that microorganisms cannot survive. Therefore, in order to remove hydrogen sulfide, a Fe / MgO catalyst may be added, and the reaction scheme in this case is as follows.

H ₂ S + 2Fe ⁺ ⇒ 2H ⁺ + 2Fe ⁺² + S

1/2 O ₂ + 2Fe ⁺² + 2H ⁺ ⇒ 2Fe ⁺³ + H ₂ O

In order to remove such odor components, the deodorizing filter should act as a media for culturing microorganisms. That is, since the odor components are decomposed by the cultured microorganisms, the deodorizing filter as a media has a high odor removal rate, durability, homogeneity of the filter media, optimal microbial growth conditions, buffering capacity of temperature and pH values, and ability to adjust its own pH. It should have functions such as survivability in case of system shutdown and self humidity control. In particular, the deodorizing filter should be good in water retention, drainage and breathability in order to provide the culture conditions of microorganisms. Good water retention means good water content in the media, drainage means water drainage in the media, and good drainage means good water drainage, leaving the water in the housing for a long time. ), And the air permeability (通氣 性) refers to the air flow of the culture soil, if the air permeability means that the exchange of the purified gas in the media and the incoming odor is smooth. In addition, the media should not be broken well, which prevents the risk of overheating by blocking the media between the media and preventing drainage. On the other hand, if it is too hard, it will not be harmful to the growth of microorganisms. The median has an acidity of about pH 5.5 ~ 6.5 and is moderately acidic.

The media used as a filter so far has a bulk, plate, or columnar structure with a porosity of 25% or more, and stable growth of microorganisms is impossible, using only inorganic porous bodies or periodically applying artificial nutrients to the porous bodies. Because it is used by injection, microorganisms are not extinguished or sound growth is not possible, so excellent odor removal effect could not be expected.

As a related art, the biofilter structure of Korean Patent No. 494448 has poor water retention and drainage properties, and the air permeability is not evenly distributed, resulting in a bad smell removal effect. Domestic Patent No. 664882 discloses porous expanded clay of granules, The deodorizing biofilter media composition consisting of broken porous expanded clay with excellent water absorption, calcined zeolite with excellent ion exchange ability, sea clam containing a lot of lime, and breathable biocomposit has improved the odor removal effect, but still has hydrogen sulfide, etc. There was a disadvantage that the deodorizing effect of did not reach a satisfactory level.

It is an object of the present invention to provide a deodorizing filter media composition composed of a granular structure and having a low porosity of 18 to 23% with an excellent odor removal effect.

It is another object of the present invention to provide a filter media composition for deodorization which can be grown intact without microorganisms disappearing.

It is still another object of the present invention to provide a filter media composition for deodorization which has good water retention and drainage and can be evenly distributed throughout. [0007] Another object of the present invention is to make the median particles into granular structure. It is to provide a filter media composition for deodorization improved drainage, ventilation is improved because the respiration and development of microorganisms.

Still another object of the present invention is to provide a deodorizing filter media composition having excellent malodor removing effect and a deodorizer using the same.

Hereinafter, to solve the present invention as an embodiment for achieving the above object, the present invention is to reveal that the invention is an improved invention of Korean Patent No. 664882.

Deodorizing filter media composition of the present invention is 55 ~ 70 parts by weight of granular porous expanded clay having a particle diameter of 2 ~ 10mm, 15 ~ 25 parts by weight of broken porous expanded clay having a particle diameter of 2 ~ 10mm, particle diameter of 1 ~ 3mm excellent in ion exchange capacity It is characterized by consisting of 3 to 5 parts by weight of hydrophilic zeolite, 3 to 12 parts by weight of 10% by weight Fe / MgO catalyst and 10 to 20 parts by weight of a breathable mixed compost.

Other specific details of embodiments of the present invention are included in the following detailed description.

The present invention having the above configuration can be expected the following effects.

Deodorizing filter media composition of the present invention is a mixture of breathable mixed compost is capable of stable growth of microorganisms, the introduced odor is thin and evenly dispersed between the media, Fe / MgO catalyst absorbs hydrogen sulfide well, high concentration of hydrogen sulfide of 25ppm or more In addition to the deodorization, the deodorization of the nitrogen-based, volatile organic-based odor components are also superior to the conventional one. In particular, when the hydrogen sulfide is 40 ppm or more, a pretreatment process may be added to lower the hydrogen sulfide concentration to 25 ppm or less. In this case, the hydrogen sulfide may be deodorized by increasing the mixing ratio of the Fe / MgO catalyst, thereby having an excellent odor removal effect. .

1 is a schematic internal cross-sectional view of a deodorizer in which a deodorizing filter media composition according to the present invention is installed inside a housing.
2 is a schematic internal cross-sectional view of a deodorizer in which a pretreatment filter media composition and a deodorization filter media composition are installed to be separated inside a housing to perform a two-step deodorization process.

Deodorizing filter media composition of the present invention is 55 ~ 70 parts by weight of granular porous expanded clay having a particle diameter of 2 ~ 10mm, 15 ~ 25 parts by weight of broken porous expanded clay having a particle diameter of 2 ~ 10mm, particle diameter of 1 ~ 3mm excellent in ion exchange capacity It is characterized by consisting of 3 to 5 parts by weight of hydrophilic zeolite, 3 to 12 parts by weight of 10% by weight Fe / MgO catalyst and 10 to 20 parts by weight of a breathable mixed compost.

Porous expanded clay has been used as a media for deodorizing biofilters in the prior art, but the present invention is one of the characteristics of mixing porous expanded clay as well as granular porous expanded clay to increase moisture absorption. Expanded clay is expanded by internal moisture when the clay is heated to a temperature above 1200 ° C. in a rotary kiln. At this time, the expanded clay must be heated to 1200 ° C. or more to form a certain amount of strength and pores.

2-10mm granular porous expanded clay is less porous and porous than pumice and lava (density: 400-500kg / ㎥). Porous expanded clay in its original state is less effective in absorbing water due to the closure of internal pores. The expanded clay has a pH of 7 to 10, with significant amounts of calcium, magnesium and sulphate, and at low pH magnesium is released. In particular, it does not have nutrients, so it is easy to mix raw materials.

Broken porous expanded clay of 2-10mm size has good water absorption and high efficiency due to the opening and closing of internal pores. The broken porous expanded clay maintains the moisture layer to absorb enough moisture to the microorganisms, has excellent moisture and breathability, and has a mineral component to allow the microorganisms to grow robustly.

The granular porous expanded clay having a particle size of 2 to 10 mm is preferably 55 to 70 parts by weight, and 15 to 25 parts by weight of broken porous expanded clay having a particle size of 2 to 10 mm, based on the total media composition. The mixing power is increased.

Zeolite is a modified tuff and chemical composition is a crystalline aluminosilicate having a cation exchange function such as aluminum silicate, among which is a hydrophilic zeolite Y-zeolite, more specifically Na-Y-zeolite or HY-zeolite, Here, silver (Ag) is ion-exchanged to replace part of Na or H with silver. The zeolite generally has a pore size of about 3 to 10 mm 3 and a particle diameter of 1 to 3 mm, which not only shows a molecular sieve effect, but also sulfur (S) and nitrogen (N) molecules in air because of its structural specificity and ion exchangeability. It has a unique property of selectively adsorbing, especially as a hydrophilic adsorbent has a strong adsorptive power of polar molecules such as water, and has a high adsorption power under low partial pressure and high temperature.

In addition, the content of silver that is ion-exchanged is preferably 2 to 15% by weight, and if the content is less than 2% by weight, even if the crystallinity is excellent, the performance is insufficient, the content of silver that is ion-exchanged exceeds 15% by weight. This is uneconomical due to the high price of silver, a precious metal, compared to the degree of adsorption performance.

On the other hand, the drying of the silver-Y-zeolite has a significant meaning because it is directly related to the crystallinity, but if the moisture is not sufficiently removed during the drying process, the crystallinity falls, so that the drying of the silver-Y-zeolite must be completely removed to completely remove the moisture on the surface. Dry at a temperature of 100-200 ° C. for 5-20 hours. Thereafter, the sufficiently dried silver-Y-zeolite is calcined in nitrogen or in an air atmosphere. When the temperature of firing is too low, the water adsorbed on the surface is not sufficiently removed and the crystallinity of the silver-Y-zeolite If the firing temperature is too high, the skeleton structure of the silver-Y-zeolite produced by evaporation to lattice water may collapse, so the firing temperature is 350 to 500 ° C. Is preferred.

The catalyst used in the present invention preferably uses an alkali metal oxide or an alkaline earth metal oxide, especially magnesium oxide (MgO) as a support, and a transition metal or an oxide thereof is supported thereon as the active metal. It is effective to support transition metals such as iron (Fe) or oxides thereof. At this time, the amount of the active metal supported on the support is effective in the catalyst carrying 0.3 to 20% by weight. The Fe / MgO catalyst may be prepared by dispersing 20 g of MgO in 200 ml of water, and then adding 1 N iron nitrate solution to 10 wt% of MgO, drying and calcining at 450 ° C. These supported active metals can use a single component and show high catalytic activity even when supported as a composite component.

In particular, when sulfur sulfide, which is a sulfur-based malodorous component, is 30 ppm or more, sulfuric acid, which is a kind of strong acid, is reacted with water to form an environment in which microorganisms cannot survive. In this case, the catalyst adsorbs hydrogen sulfide to significantly lower the concentration. Function Therefore, deodorization efficiency is increased and reliability is increased. If hydrogen sulfide is 40 ppm or more, a pretreatment process may be necessary to reduce the concentration to 25 ppm or less. In this case, hydrogen sulfide by increasing the Fe / MgO catalyst mixing ratio of the deodorizing filter media Deodorization is possible.

The hydrophilic zeolite and the Fe / MgO catalyst serve as neutralizing agents, and are preferably used in an amount of 2 to 5 parts by weight and 3 to 12 parts by weight based on the total composition.

The breathable mixed compost is composed mainly of peat mixtures, fibrous bark and fine sand, and contains a small amount of calcined ocher powder and quicklime. This breathable mixed compost is composed of 50 to 65 parts by weight of peat mixture, 15 to 20 parts by weight of fibrous bark, 15 to 25 parts by weight of fine sand, 2 to 5 parts by weight of calcined ocher powder and 1 to 3 parts by weight of quicklime. The breathable mixed compost is a natural organic and inorganic materials of the finest raw materials, increasing the capacity of retaining moisture and nutrients, inhibiting the fixation of phosphoric acid, adhere to the surface and space of the expanded clay, activate microbial activity, reduce the harmful effects of ions, prevent the acidification of media and It has the effect of strengthening the buffer capacity, inducing the rise of geothermal temperature and nutrient supply.

The peat mixture is made of natural peat, charcoal, cocoa fiber, pearlite, wood vinegar and bone meal, natural peat 60-75 parts by weight, charcoal 2-5 parts by weight, cocoa fiber 10-15 parts by weight, pearlite 10-20 parts by weight It is preferable that it consists of wood vinegar and bone powder 0.01-3 weight part.

The fiber-rich bark (bark) is excellent in the binding, breathability and moisturizing power is suitable for growing microorganisms and provides a long-term continuous supply of nutrients. Bark has high organic content but very low fertilizers such as nitrogen, phosphorus and potassium, so that soil productivity, ie intellect, is kept strong, and its application and pretreatment vary depending on the type. Rough barks, when mixed with fine peat, can be used to increase breathability, which increases proportionally with the amount of bark. Bark naturally contains some nutrients, and fiber-rich bark is preferably used at 15 to 25 parts by weight.

Fine sands are collected from sand pits along rivers, and various particles are applied to horticulture, which are heavy and low in water buffering, in many cases low permeability, especially low porosity compared to organic soils. The particle size varies and has low nutrients as an inactive substance. Sand also has lime carbonate, which has a large effect on the pH of peat mixtures, which contains various weed seeds, which are usually caused by storage. In general, sand is used to dry the peat mixture, if the amount is large, the effect of increasing the pH should be considered, and instead of the fine sand can be used zeolite powder, preferably 15 to 25 parts by weight of the total mixed compost.

Calcined ocher powder is heat treated, so there is no risk of phytosanitary contamination, and it is highly breathable and neutralizes, prevents oxidation and adjusts pH. Ocher is rich in light minerals such as quartz, calcite and feldspar, and also contains some heavy minerals such as mica, hornblende, fluorite, and vermiculite, and has excellent absorption, midnight, and vitality. . It is also rich in calcium and magnesium carbonates (CaCO ₃ Content 33% or less) When diluted hydrochloric acid is added, carbon dioxide is generated and bubbles are generated. The chemical composition excluding carbonate is SiO ₂ 72 ~ 82%, Al ₂ O ₃ 6 ~ 10%, Fe ₂ O ₃ 1 ~ 6%, CaO 0.8 ~ 1%, Na ₂ O 0 ~ 1%, K ₂ O 1 ~ 2%, P ₂ O ₅ 0.1-0.4%. The calcined ocher powder is preferably used in an amount of 2 to 5 parts by weight based on the total mixed compost.

Quicklime has a neutralizing function to maintain optimal pH and electrical conductivity, it is preferable to use 1 to 3 parts by weight based on the total compost.

Natural peat is a finely processed, sterile, toxic, and odorless layer of fluid from thousands of years of wood and deciduous plants. Charcoal has antibacterial properties that promote microbial growth and form water retention and soil voids.

Cocoa fiber is a coconut shell, and pure cocoa fiber contains little moisture and is highly breathable because it does not have a fine pore structure. The structure of the cocoa fibers in the mixture of the present invention forms coarse pores to facilitate drainage.

Perlite is originally a glassy volcanic stone found all over the world, broken down and classified and then expanded at about 1000 ° C. The expansion is due to the vaporization of water in the mineral in the enclosed rock, resulting in pearlite expanding 20 times its volume. In horticulture, perlite is used as a peat mixture and pure culture soil. It is added to improve the water absorption and porosity of the mixture, and is widely used for inflow and drainage.

At this time, a small amount of wood vinegar and bone flour are added to adjust pH and reinforce calcium. Wood vinegar generally collects and cools the smoke generated when carbonizing oak trees (qualus) and cools the crude wood vinegar. It is made by standing and filtering.

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

1 is a schematic internal cross-sectional view of a deodorizer in which a deodorizing filter media composition according to the present invention is installed inside a housing.

Deodorizer 1 according to the present invention using the deodorizing filter media composition (11) is made of a closed structure, consisting of a splint and a polyethylene net installed on the support 13 is installed on the bottom, on the support A pop-clay layer 12 having a particle size of 20 to 40 mm having a thickness of about 20 cm and having a porosity of 45 to 55%, a filter structure 11 formed on the pop-clay layer, and installed on the filter structure It consists of a water injector 15 for periodically spraying water and a fan 16 installed at the bottom for discharging the deodorized and purified air to the outside.

The deodorizer is further formed with an air blocking member 14 along the side wall of the deodorizer to block the air passing through it without being deodorized along the side wall. This air blocking member is for blocking the air passing through without being deodorized in the vicinity of the side wall, and is for enhancing the deodorizing effect.

The water injector is directly connected to the tap water to inject water at regular intervals, for example, every 5 hours or 5 minutes, this operation is provided with an electric valve (not shown) attached with a timer (not shown) Can be carried out.

The deodorizer of the present invention is manufactured in a sealed structure by a housing, and an upper space 21 into which the odor air to be treated is introduced and a lower space 22 through which the treated purge air is discharged are formed in the upper part of the interior. do. The air deodorized and purified while passing through the deodorizing filter composition 11 is sucked out by the fan 16.

FIG. 2 is a schematic internal cross-sectional view of a deodorizing filter media composition for pretreatment and a deodorizer which is installed to separate the composition inside a housing to perform a two-step deodorizing process.

In the present invention, the air having a high pollution concentration is first pretreated with the pretreatment filter media composition 30 before purifying the contaminated air using the filter media composition 11 for deodorization, and then the filter media composition 11 for deodorization. Also included is a deodorizer which performs a two-stage deodorization step of purifying again.

As shown in FIG. 2, the highly concentrated malodorous air is introduced into the lower space 32, first pretreated with the filter median composition 30 for pretreatment, then ascended to the upper space 31, and back to the upper space 21. After moving horizontally, the second stage is purged with the filter media composition 11 for deodorization and discharged to the lower space 22. Although not shown in FIG. 2, an air blocking member may be further formed along the side wall to block air passing through the side wall without deodorization. The region filled with the filter media composition 30 for the pretreatment and the region filled with the filter media composition 11 for deodorization for two-stage purification are blocked by the blocking wall 35.

The filter media composition 30 for pretreatment includes 60 to 75 parts by weight of granular porous expanded clay having a particle size of 2 to 10 mm, 15 to 25 parts by weight of broken porous expanded clay having a particle size of 2 to 10 mm, and 10 wt% Fe / MgO catalyst. It consists of 2-25 parts by weight.

Meanwhile, the deodorizer of the present invention is mainly manufactured in a cylindrical shape, but is not necessarily limited thereto, and may be manufactured in the form of a quadrilateral or a polygon. In addition, the size of the deodorizer may also be variously changed according to the installation site or deodorizing capacity, such modifications or changes can be easily carried out by those of ordinary skill in the art.

Such a present invention will be embodied based on the following examples, but the present invention is not limited to these examples.

60 g of granular porous expanded clay with a particle diameter of 2 mm, 20 g of broken porous expanded clay with a particle diameter of 2 mm, 4 g of Y-type zeolite exchanged with silver (Ag) of 1 mm with excellent ion exchange ability, 10 g of 10% by weight Fe / MgO catalyst, and breathable 15 g of mixed compost (50 parts by weight of peat mixture, 20 parts by weight of fibrous bark, 15 parts by weight of fine sand, 5 parts by weight of calcined ocher powder, and 2 parts by weight of quicklime) were taken, mixed and mixed well, and then put into the furnace. Firing was carried out for 4 hours while maintaining the temperature at 1000 ° C.

Then, the fired filter media were sifted to prepare a filter media for deodorization having a particle diameter of 3 to 5 mm.

[Comparative Example]

Example A zeolite (composition ratio: 18 parts by weight of Na ₂ O, 28 parts by weight of Al ₂ O ₃ , 34 parts by weight of SiO ₂ , H ₂ O 20 instead of using a type Y zeolite with silver (Ag) exchanged) By weight) and deodorizing filter media was prepared in the same manner except for using a seashell of 2 mm in diameter instead of using a 10% by weight Fe / MgO catalyst.

<Experimental example> Evaluation of odor gas deodorizing ability of the filter media for deodorization

In order to evaluate the deodorizing ability of the deodorizing filter media prepared in Examples and Comparative Examples, the deodorizing ability of four gases, that is, hydrogen sulfide, methyl mercaptan, trimethylamine and formaldehyde, was evaluated. To this end, put a sample in a 10 l airtight container and inject 200 ppm each of the test gas, and then examine the concentration of the gas according to the time as follows to evaluate the deodorizing performance of the deodorizing filter media prepared in Examples and Comparative Examples It is shown in [Table 1].

 Gas detector: GV-100S (manufactured by Gastec, Japan)

 -Experimental conditions: sample volume, 200 g

 -Temperature of airtight container: 90 ℃

 Relative Humidity: 70 ~ 80%

-Measurement time: 20 minutes to 180 minutes after sample injection

 Deodorizing ability by gas (unit: ppm) division Hydrogen sulfide Methyl mercaptan Trimethylamine Formaldehyde Example Comparative example Example Comparative example Example Comparative example Example Comparative example Early 200 200 200 200 200 200 200 200 20 minutes 154 159 168 172 159 166 160 168 40 minutes 124 127 125 129 120 126 131 139 60 minutes 115 118 109 113 107 112 113 121 80 minutes 98 100 92 95 89 95 93 100 100 minutes 79 81 80 84 77 83 75 81 120 minutes 56 57 69 73 61 68 60 67 140 minutes 42 44 48 51 51 57 49 56 160 minutes 32 36 37 41 40 46 38 44 180 minutes 25 30 28 30 31 36 29 36

As shown in [Table 1], it was found that the deodorizing filter media according to the example was superior to the gas deodorizing ability in the sealed container regardless of the gas type.

DESCRIPTION OF SYMBOLS 1 Deodorizer 11 Deodorization filter media composition
12: pop-clay layer 13: support
14 air blocking member 15 water injector
16: fan 21, 31: upper space
22, 32: lower space 30: filter media composition for pretreatment
35: blocking wall

Claims (7)

55 to 70 parts by weight of granular porous expanded clay with a particle diameter of 2 to 10 mm, 15 to 25 parts by weight of broken porous expanded clay with a particle diameter of 2 to 10 mm, and 3 to 5 parts by weight of hydrophilic zeolite with a particle size of 1 to 3 mm with excellent ion exchange ability Deodorization filter media prepared by deodorizing filter media composition consisting of 3 to 12 parts by weight of Fe / MgO catalyst by weight and 10 to 20 parts by weight of a permeable mixed compost, and has a porosity of 18 to 23% in a granular structure. Filter media.
2. The filter media for deodorization according to claim 1, wherein the hydrophilic zeolite is Y-zeolite in which silver (Ag) is ion exchanged.
3. The filter media for deodorization according to claim 2, wherein the Y-zeolite is Na-Y-zeolite or HY-zeolite.
According to claim 1, wherein the breathable mixed compost 50 to 65 parts by weight of peat mixture, fibrous bark 15 to 20 parts by weight, fine sand 15 to 25 parts by weight, calcined ocher powder 2 to 5 parts and quicklime 1 to 3 Deodorizing filter media, characterized in that consisting of parts by weight.
According to claim 4, The peat mixture is composed of 60 to 75 parts by weight of natural peat, 2 to 5 parts by weight of charcoal, 10 to 15 parts by weight of cocoa fiber, 10 to 20 parts by weight of pearlite and 0.01 to 3 parts by weight of wood vinegar and bone meal Deodorizing filter media characterized by the above.

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