KR101344922B1

KR101344922B1 - Moss brick for purifying water and method for preparing the same

Info

Publication number: KR101344922B1
Application number: KR1020120041588A
Authority: KR
Inventors: 김화중; 도혜원
Original assignee: 경북대학교 산학협력단
Priority date: 2012-04-20
Filing date: 2012-04-20
Publication date: 2013-12-27
Also published as: KR20130118596A

Abstract

The present invention relates to a moss brick for water purification and a method of manufacturing the same. The moss brick according to the present invention has excellent removal efficiency of contaminants from contaminated water, compared to bricks containing no moss, by collecting and pressing moss together with cement-zeolite bricks having large voids. It can be applied as an eco-friendly building material with excellent biological purification ability because it can have a big effect on the dissolved oxygen amount while having the removal performance.

Description

Moss brick for purifying water and method for preparing the same

The present invention relates to a cement brick for water purification and a method of manufacturing the same.

Various human pollutants that are inevitably generated as a result of economic activity have been constantly released into the environment.However, in the past, when the lifestyle was simple and the population was small, the environmental pollution was not recognized as a problem to be solved because it was removed by the self-cleaning ability of the environment. . However, as the scale of economic activity expanded, the pollution and natural destruction that increased in proportion to the pollutants released into the environment were accelerated, and in recent years it has reached a situation that threatens human life itself. Korea has achieved remarkable economic growth for a short period of time by promoting industrialization since the 1960s, but it has had a problem of environmental pollution behind it. At the same time, emissions of factory and urban wastewater increased rapidly, and water pollution in major rivers and coastal areas began to become a social problem from the late 1960s. Today, industrialized countries are actively conducting research, legal regulations, and facility investments to prevent pollution of their own waters and to restore the quality of polluted waters. International cooperation is underway for global environmental preservation.

In order to solve the serious water pollution, bioremediation using various functions of microorganisms or organisms is attracting attention as an eco-friendly and economical measure for improving water quality.As a physical and chemical means, it is available as an effective means for environmental recovery and improvement that is difficult to solve. It is known. Environmental improvement method using the function of microorganism is to artificially reinforce the role that microorganism originally played in nature, so it is important to select water purification microorganism, express function and strengthen recovery function, and improve the environment and harmonize water quality. It is considered possible and the technology of water purification will be more and more important in the future using microorganisms. In the biological treatment method using microorganisms, microbial membranes such as a rotating disk method or water spraying phase, and activated sludge microorganisms that actively decompose and remove organic substances in wastewater by using aerobic microorganisms in a mixed culture state are immobilized on a polymer material. There is an immobilization method. Biological treatment technology has limitations such as impact load occurs even at low concentrations and deterioration of efficiency due to the disappearance of microorganisms. However, the field treatment is still insufficient. have. In addition, due to the increasing demand for environmentally friendly construction materials, many construction materials are being developed. Among them, continuous pores are formed to develop porous concrete with permeability, air permeability, water purification, vegetation and cultivation capacity, and plants are built. Vegetation concrete and vegetation brick, which can coexist together with the material, can be greening phenomenon, which has the advantages of thermal insulation, heat insulation effect, energy efficiency increase, and purification ability.

Therefore, there is an urgent need for the development of vegetation bricks in which such porous concrete and plants can coexist in building materials.

While the present inventors have studied cement blocks capable of maximizing the water purification effect by a biological purification method, the moss is collected and molded together with cement-zeolitic bricks with large pores, contaminated water compared to bricks without moss. Confirmed that the removal efficiency of the contaminants is excellent, and completed the present invention.

Accordingly, the present invention is to provide a moss brick for water purification and its manufacturing method.

The present invention combines the beneficial effect on the dissolved oxygen of the waste water due to photosynthesis of moss and the self-cleaning ability of the microorganism, to provide a moss brick having excellent water purification ability and a method for producing the same.

Moss brick for water purification according to the present invention by collecting the moss and pressurized with a cement-zeolite brick with a large pore size, it is superior in the removal efficiency of contaminants in contaminated water compared to the brick without moss, in particular total nitrogen ( TN) and total phosphorus (TP) can be used as an eco-friendly building material with excellent biological purification ability as it can greatly affect dissolved oxygen amount.

1 is a view showing a moss brick produced by spraying moss powder on the aggregate of the present invention and pressure-molded.
Fig. 2 is a diagram illustrating the adsorption of microorganisms in the moss brick zeolite of the present invention by scanning electron microscopy (SEM) [(a) zeolite without adsorption of microorganisms, (b) zeolite with microorganisms adsorbed at Daegu S Environmental Office] .
Figure 3 is a view showing a process of adsorbing the curing and microorganisms of moss bricks of the present invention to moss bricks.
4 is a view showing a change in the concentration of dissolved oxygen (DO) of raw water to which the moss brick of the present invention is applied.
5 is a view showing a change in the pH of the raw water to which the moss brick of the present invention is applied.
Figure 6 is a view showing the removal efficiency of the suspended solids (SS) of the raw water to which the mossy brick of the present invention is applied.
7 is a view showing the removal efficiency of the chemical oxygen demand (COD) of the raw water to which the mossy brick of the present invention is applied.
8 is a view showing the removal efficiency of biological oxygen demand (BOD) of raw water to which the mossy brick of the present invention is applied.
9 is a diagram showing the removal efficiency of total nitrogen (TN) of raw water to which the mossy brick of the present invention is applied.
10 is a view showing the removal efficiency of the total phosphorus (TP) of raw water to which the mossy brick of the present invention is applied.

The present invention

1) 1 part by weight of cement; And 2 to 5 parts by weight of fine aggregate composed of 75 to 85% by weight of crushed stone having a particle size of 1 to 2 mm, 1 to 10% by weight of stone powder having a particle size of 1 mm or less, and 10 to 20% by weight of zeolite having a particle size of 1 to 3 mm. And mixing with water,

2) mixing the mixture prepared in step 1 and 0.5 to 5% by weight of moss based on the total weight of the mixture, followed by pressure molding to produce moss bricks, and

3) it provides a method of producing a moss brick for water purification, comprising the step of immersing and curing the moss brick prepared in step 2) in water dispersed microorganisms to adsorb the microorganisms in the zeolite of the moss brick.

The present invention also provides a moss brick for water purification prepared by the above method.

Hereinafter, the present invention will be described in detail.

The moss brick for water purification according to the present invention is mixed with a cement and a fine aggregate composed of crushed stone having a particle size of 1 to 2 mm, stone powder having a particle size of 1 mm or less, and a zeolite having a particle size of 1 to 3 mm, and mixed with water thereto. Then, it is press-molded together with moss to prepare a moss brick, it is characterized in that it was produced by soaking and curing the microorganisms in the water dispersed in the microorganisms adsorbed to the zeolite of the moss brick.

Referring to the step-by-step detailed description of the method for producing mossy brick for water purification according to the present invention.

Step 1) is a step of mixing cement, fine aggregate and water, 1 part by weight of cement; And 2 to 5 parts by weight of fine aggregate composed of 75 to 85% by weight of crushed stone having a particle size of 1 to 2 mm, 1 to 10% by weight of stone powder having a particle size of 1 mm or less, and 10 to 20% by weight of zeolite having a particle size of 1 to 3 mm. Then, water is added and mixed thereto. At this time, the content of water is preferably 20 to 30% by weight based on the total weight of cement.

The cement includes portland cement, mixed cement, special cement, etc. The portland cement includes one type of ordinary portland cement, two types of medium heat portland cement, three types of crude steel portland cement, four types of low heat portland cement, and five types of sulfate resistant Portland cement, and the like, wherein the mixed cement includes blast-furnace slag cement, portland pozzolan cement, flyland ash cement, color cement, and the like. Including, the special cement is alumina cement, white portland cement, cemented carbide, thermal insulation cement using expanded vermiculite (KS L 5216), expandable hydraulic cement (KS L 5217), Masonry cement (KS L 5219), Steel cement, etc., but is not limited thereto.

Step 2) is a step of manufacturing a moss brick, the moss covered with greening phenomenon in a humid place of the outer wall of the building is collected by drying in the sun and powdered moss dried for 36 hours. Then, the mixture of step 1) is filled with the brick making frame and sprinkled with moss powder on the surface, and the lid is covered with pressure molding to produce moss bricks. At this time, moss powder is preferably added 0.5 to 5% by weight based on the total weight of the mixture prepared in step 1).

Step 3) is a step of adsorbing the microorganisms in the zeolite contained in the moss bricks, after 24 hours of pressure molding, dipping the moss bricks pressure-molded in step 2) in water in which the microorganisms are largely dispersed and cured for 1 week Adsorb microorganisms.

The microorganism is a microorganism isolated and identified from the sample of Daegu S Environmental Office, Bacillus amyloliquefaciens; Lysinibacillus fusiformis; Pseudochrobactrum saccharolyticum; Lysinibacillus sphaericus; Aeromonas encheleia; Klebsiella pneumoniae; Aeromonas media; Raoultella ornithinolytica; Comamonas thiooxidans is preferably selected, but it is more preferable to use nine microorganisms together.

Moss bricks produced by the above method have increased dissolved oxygen (DO) and superior chemical oxygen demand (COD) and total phosphorus (T-P) removal efficiency compared to cement bricks without moss.

In particular, the microorganisms do not affect the amount of dissolved oxygen, the moss is photosynthetic, has the effect of removing the total nitrogen (T-N), total phosphorus (T-P) while having an excellent effect on the amount of dissolved oxygen.

As described above, the moss brick for water purification according to the present invention has the self-cleaning ability of microorganisms and the beneficial effect of the moss bricks on the dissolved oxygen of the waste water. The possibility was confirmed. Therefore, the moss brick according to the present invention can be usefully used as an environmentally friendly building material.

Hereinafter, preferred embodiments of the present invention will be described in order to facilitate understanding of the present invention. However, the following examples are provided only for the purpose of easier understanding of the present invention, and the present invention is not limited by the examples.

Example 1 Manufacture of Mossy Bricks

1. Experimental material

The cement used in this example was usually Portland cement, the physical properties of which are shown in Table 1 below. As fine aggregates, stone powder having a particle size of 1 mm or less, crushed stone having a particle size of 1 to 2 mm, and zeolites having a particle size of 1 to 3 mm were used, and their physical properties are shown in Table 2, and the chemical composition of the zeolite is shown in Table 3 Shown in

The medium used in this example was TSA (trypic soy agar), TSA medium was 15g tryptone, 5g soytone, 5g sodium chloride, 15g dissolved in 1L of distilled water and adjusted to pH 7.3 ± 0.2 and then 121 ℃ (15 pounds) / in ² , 1.05kg / ㎠) autoclave (autoclave) sterilization for 15 minutes and cooled to about 60 ℃ and then used by dispensing about 15ml in a sterile petri dish (petri-dish).

In this embodiment, moss covered with greening phenomenon in a humid place on the outer wall of the building was collected in the sun and dried for 36 hours was used for the production of moss brick.

The microorganisms used in the present example were sampled at the Daegu S Environment Office, stirred by putting 30 g of the sample into 200 ml of sterile distilled water, and then taking 10 ml with a sterilized tip-pinned micropipette and adding to TSA medium. Inoculation was carried out by smearing using bend glass. Inoculated microorganisms were isolated and identified by 16S rDNA sequencing, and the identified microorganisms are shown in Table 4.

Physical Properties of Cement Setting time
(min) Compressive strength
(MPa) Blaine
(Cm 2 / g) density
(g / ㎥) Initial setting Final setting 3d 7d 28d 3,318 3.15 240 340 22.5 31.1 40.0

Physical properties of stone powder, crushed stone and zeolite sand Rating density
(g / ㎥) Water absorption
(%) Unit volume weight
(t / ㎥) Absolute volume ratio
(%) broken stone 1 mm or less 2.62 0.8 1.6 59.9 Stone powder 1 to 2 mm 2.59 1.7 1.4 56.9 Zeolite 1 to 3 mm 1.97 13.8 0.973 56.2

Zeolite Chemical Composition Chemical composition SiO ₂ Al ₂ O ₃ K ₂ O Fe ₂ O ₂ Na ₂ O ₂ content(%) 66.8 13.2 3.02 1.68 1.16

Microorganisms Isolated and Identified from Samples of Daegu S Environment Office sample Strain name % Similarity Daegu S Environment Office

Bacillus amyloliquefaciens 99.86 Lysinibacillus fusiformis 99.59 Pseudochrobactrum saccharolyticum 99.92 Lysinibacillus sphaericus 99.86 Aeromonas encheleia 99.19 Klebsiella pneumoniae 94.52 Aeromonas media 99.44 Raoultella ornithinolytica 99.93 Comamonas thiooxidans 99.86

2. Manufacture of mossy bricks

Usually 2.5 kg of Portland cement, 5.05 kg of crushed stone having a particle size of 1 mm or less, 0.315 kg of stone powder having a particle size of 1 to 2 mm, and 0.945 kg of zeolite having a particle size of 1 to 3 mm are mixed, and 0.575 kg of water (about cement) 23%) was added and mixed. The collected moss is dried in the sun and dried for 36 hours. After filling 1.82 kg of the mixture (9.385 kg) in the brick making frame, sprinkling moss powder (24 g) on the surface and covering the upper lid, the hydraulic ram on the lid (10ton / 10㎜) was installed and the hydraulic ram jockey was connected to form a moss brick by pressure molding while applying pressure. The prepared moss brick is shown in FIG.

After 24 hours of pressure molding, the moss bricks were placed in a water bath for curing and adsorption of microorganisms, and then dispersed in a large amount of the microorganisms (50 medium medium) described in Table 4, inoculated by smearing, After soaking, it was cured for a week to adsorb microorganisms on moss bricks. At this time, a pump was installed in the water tank so that microorganisms in the water can be freely circulated, and the water heater was set at 26 ° C. so that the microorganisms were not extinguished at an external temperature. The adsorption of microorganisms in the zeolite of the moss brick thus prepared was observed by scanning electron microscope (SEM). The adsorption results are shown in FIG. 2, and the principles of curing and adsorption of microorganisms are shown in FIG. 3.

As shown in FIG. 2, the zeolite (a) that did not adsorb microorganisms was confirmed to have an excellent adsorption function because the internal structure is made of microporous, and the zeolite (b) which adsorbs microorganisms has a microporous structure. It was confirmed that the microorganisms are adsorbed on the.

< Experimental Example 1 > Measurement of Water Purification Ability of Mossy Bricks of the Present Invention

In order to confirm the water purification ability of the moss brick of the present invention, the following experiment was performed.

Raw water used in this experiment was used to remove sandstones and contaminants from the wastewater obtained from Daegu S Environmental Office. The type of reactor used in the wastewater treatment of this experiment was a completely mixed batch reactor (CMB), in which there was no flow rate and a method of completely mixing the liquid in the reactor. The water purification experiment tank used an acrylic tank of 20 L capacity, the amount of the reaction tank was adjusted to 18 L and the water was circulated using a pump. Five reactors were prepared and each reactor had 1) raw water (BLANK); 2) cement bricks without adsorption of microorganisms (WB [raw water + cement brick]); 3) cement bricks adsorbed microorganisms (WB-S [raw water + cement brick + microorganism]); 4) moss bricks without adsorbing microorganisms (MB [raw water + moss bricks]); And 5) moss bricks (MB-S [raw water + moss bricks + microorganisms]) adsorbed microorganisms were placed in a water tank and water purification capacity was measured.

Water purification experiments were conducted four times a week, seven days apart, dissolved oxygen (DO) of the solution is DO meter (DO-30N), pH is pH meter (P15), suspended solids (SS) SS meter (AL250) , Chemical oxygen demand (COD) is reactor digestion (HS-2300Plus), biological oxygen demand (BOD) is BOD sensor system, total nitrogen (TN) is chromotropic acid (HS-2300Plus), total phosphorus ( TP) was measured using molybdo vanadate (HS-2300Plus). Each item was measured three times with three water quality measurement kits to represent an average value. COD _Mn , TN and TP are standard solutions of COD _Mn (70mg / l), TN (100mg / l) and TP (5mg / l) to evaluate the reliability of water analyzer. As a result, the average COD _Mn was 69.3 mg / l, the TN was 99.8 mg / l, and the TP was 5.2 mg / l. The analysis method of each item is shown in Table 5 below.

Analysis item and method of water purification ability of raw water to which moss brick of the present invention is applied Analysis item Way pH pH meter (P15) BOD BOD sensor system6 DO DO meter (DO-30N) COD _MN Reactor Digestion (HS-2300Plus) T-N Chromatropic acid (HS-2300Plus) T-P Molybdo Vanadate (HS-2300Plus) SS SS meter (AL250)

One. Dissolved Measurement of concentration change of oxygen amount

The concentration change of dissolved oxygen (DO) of raw water to which the moss brick of the present invention was applied was measured using a DO meter (DO-30N). The results are shown in Table 6 and FIG.

Change of Concentration of Dissolved Oxygen (DO) in Raw Water to the Moss Brick of the Present Invention date Raw water (mg / l) WB (mg / L) WB-S (mg / L) MB (mg / l) MB-S (mg / L) 0 3.8 3.8 3.8 3.8 3.8 7 4.0 5.9 7.5 10.1 10.5 14 4.7 7.7 7.8 10.9 12.1 21 7.4 10.3 10.1 11.3 13.8 28 5.6 11.5 12.1 10.4 13.4

As shown in Table 6 and Figure 4, the dissolved oxygen concentration of the raw water shows the lowest value while showing an irregular shape, WB, WB-S shows a value that increases with time, MB with moss brick , MB-S showed an average of 1 ~ 5% higher than other types of control. Therefore, WB-S and MB-S applied with microorganisms showed no similar reaction and showed similar morphology to the control group without microorganisms. Thus, the change in dissolved oxygen concentration did not seem to be affected by microorganisms. MB-S was found to have high levels primarily due to photosynthetic activity of moss attached to bricks.

2. pH Of concentration change in

The pH change of the raw water to which the moss brick of the present invention is applied was measured using a pH meter (P15). The results are shown in Table 7 and FIG.

PH change of raw water to which moss brick of the present invention is applied date Raw water (mg / l) WB (mg / L) WB-S (mg / L) MB (mg / l) MB-S (mg / L) 0 7.3 7.3 7.3 7.3 7.3 7 7.5 10.5 11.1 9.9 10.1 14 8.1 10.4 10.8 10.3 10.5 21 8.2 10.3 10.6 11.2 10.8 28 8.2 10.1 10.5 11.2 10.5

As shown in Table 7 and Figure 5, except for the raw water, the numerical value was similar, which is strongly alkaline cement added to the production of bricks, and in the case of MB, MB-S was attached to the inside and outside of the brick Because moss consumes carbon dioxide in the water through photosynthetic activity, it is thought that moss consumption is greater than the amount of carbon dioxide introduced into the water.

3. Suspended matter ( SS Measurement of change of concentration of

The concentration change of the suspended matter (SS) of the raw water to which the moss brick of the present invention was applied was measured by using an SS meter (AL250). The results are shown in Table 8 and FIG.

Change of Concentration of Suspended Solids (SS) in Raw Water by Applying Lichen Bricks of the Present Invention date Raw water (mg / l) WB (mg / L) WB-S (mg / L) MB (mg / l) MB-S (mg / L) 0 91 91 91 91 91 7 19 17 15 18 18 14 14 13 11 13 16 21 15 10 9 14 13 28 19 11 7 12 9

As shown in Table 8 and FIG. 6, when looking at the raw water reactor, the removal rate of suspended solids increased significantly from the 7th day, and after the 28th day, the removal efficiency was about 10% compared to the other controls, which is characteristic of the batch reactor. It is believed that this influenced. The difference from the other controls after day 28 seems to be due to the fact that the porous zeolite-containing bricks have a large specific surface area and are capable of treating suspended solids inside and outside. In the case of MB-S, the removal rate from raw water was more than 10%.

4. Chemical oxygen demand ( COD Measurement of change of concentration of

The change in the concentration of chemical oxygen demand (COD) of raw water to which the mossy brick of the present invention was applied was measured by using Reactor Digestion (HS-2300Plus). The results are shown in Table 9 and FIG.

Change in Chemical Oxygen Demand (COD) of Raw Water by Applying Lichen Bricks of the Present Invention date Raw water (mg / l) WB (mg / L) WB-S (mg / L) MB (mg / l) MB-S (mg / L) 0 58.9 58.9 58.9 58.9 58.9 7 15.9 16.9 16.9 17.4 17.9 14 12.9 21.3 19.4 19.1 18.8 21 10.1 18.2 14.9 17.7 15.7 28 10.2 19.4 16.1 18.5 15.9

As shown in Table 9 and Figure 7, the raw water reactor shows a higher removal rate than the other control group. During the experiment period, the biological reaction in the raw water itself causes the self-cleaning effect of the inorganic or organic substances on the raw water to affect the removal rate. It is considered to be. Microorganisms WB-S and MB-S show little difference from WB and MB without microorganisms. For WB-S and MB-S, the removal rates of Day 14 were 67% and 68%, respectively, which were lower than those of Day 7, showing higher removal efficiency on Days 21 and 28. However, the removal rate of WB, MB and MB-S is similar to that of WB and MB without the microorganism. Is fed. The removal rate was about 4% depending on the application of microorganisms, but it did not reach the removal efficiency due to the self-cleaning action of the raw water itself.

5. Biological oxygen demand ( BOD Measurement of change of concentration of

The change in the concentration of biological oxygen demand (BOD) of raw water to which the mossy brick of the present invention was applied was measured using the BOD sensor system 6. The results are shown in Table 10 and FIG.

Change in Concentration of Biological Oxygen Demand (BOD) of Raw Water to the Moss Brick of the Present Invention date Raw water (mg / l) WB (mg / L) WB-S (mg / L) MB (mg / l) MB-S (mg / L) 0 72.7 72.7 72.7 72.7 72.7 7 45.2 26.9 24.3 30.8 21.3 14 41.0 20.3 16.7 27.4 17.4 21 31.6 17.6 13.4 21.6 15.1 28 17.6 15.9 9.5 13.1 10.0

As shown in Table 10 and Figure 8, the removal efficiency of the raw water showed the lowest removal rate in the initial 7-day measurement, and WB-S, MB-S applied with microorganisms of 86 ~ 86% at 28 days even in the similar aspect It showed the highest removal rate, which is thought to increase the removal efficiency of biological oxygen demand due to the biological reaction of microorganisms.

6. Measurement of concentration change of total nitrogen (T-N)

The change in the concentration of total nitrogen (T-N) of the raw water to which the moss brick of the present invention was applied was measured using Chromatropic acid (HS-2300Plus). The results are shown in Table 11 and FIG.

Change of Concentration of Total Nitrogen (T-N) in Raw Water to the Moss Brick of the Present Invention date Raw water (mg / l) WB (mg / L) WB-S (mg / L) MB (mg / l) MB-S (mg / L) 0 22.68 22.68 22.68 22.68 22.68 7 18.91 16.54 10.62 14.82 10.91 14 17.15 12.83 5.43 7.73 7.43 21 17.24 11.12 4.24 7.12 5.91 28 17.31 11.44 4.34 7.54 5.14

As shown in Table 11 and Figure 9, the raw water was increased to 25% removal efficiency up to the 14th day, but the same value after the 14th day. In the case of WB, the average removal efficiency was 34.4%, which was similar to the total nitrogen (TN) removal efficiency of the porous concrete. It was confirmed that the removal efficiency was similar when the bricks fabricated using the porous zeolite were applied. Microbial WB-S and MB-S showed the highest removal efficiencies of 73% and 68% with the average removal rates starting from the 7th day to the 28th day. Nitrogen removal is thought to occur due to the formation of the external biofilm in the zeolite in the brick together with the porous zeolite.

7. Determination of changes in the concentration of total phosphorus (T-P)

The change in the concentration of total phosphorus (T-P) of raw water to which the moss brick of the present invention was applied was measured using Molybdo Vanadate (HS-2300Plus). The results are shown in Table 12 and FIG.

Change in Concentration of Total Phosphorus (T-P) in Raw Water to the Moss Brick of the Present Invention date Raw water (mg / l) WB (mg / L) WB-S (mg / L) MB (mg / l) MB-S (mg / L) 0 2.29 2.29 2.29 2.29 2.29 7 0.66 0.47 0.24 0.36 0.39 14 0.43 0.34 0.27 0.24 0.24 21 0.58 0.28 0.16 0.22 0.22 28 0.41 0.20 0.13 0.21 0.11

As shown in Table 12 and FIG. 10, in the case of raw water, the removal efficiency increased up to the 14th day, but increased again on the 28th day after the decrease in the 21st day. It shows irregular shape but higher removal efficiency than initial raw water value. However, the average removal efficiency difference is more than 10% with WB, WB-S, MB, and MB-S. Among the 4 control groups except raw water, WB-S and MB-S applied with microorganisms showed an average removal rate of 91% and 90% while WB and MB without microorganisms showed 86% and 89% removal efficiency on average. Indicated. Microbial WB-S and MB-S showed excellent removal efficiency of 1 ~ 5% on average.

Claims

1) 1 part by weight of cement; And 2 to 5 parts by weight of fine aggregate composed of 75 to 85% by weight of crushed stone having a particle size of 1 to 2 mm, 1 to 10% by weight of stone powder having a particle size of 1 mm or less, and 10 to 20% by weight of zeolite having a particle size of 1 to 3 mm. And mixing with water,
2) mixing 0.5 to 5% by weight of the moss powder with respect to the total weight of the mixture and the mixture prepared in step 1), followed by pressure molding to produce a moss brick, and
3) absorbing the microorganisms in the zeolite of the moss bricks by immersing and curing the moss brick prepared in step 2) in water in which the microorganisms are dispersed;
A method of manufacturing a moss brick for water purification, including.

According to claim 1, wherein the cement in step 1) is one kind of ordinary portland cement, two medium heat portland cement, three crude steel portland cement, four low heat portland cement, five sulphate resistant portland cement, blast furnace slag cement (portland) Insulation with blast-furnace slag cement, portland pozzolan cement, flyland ash cement, color cement, alumina cement, white portland cement, carbide cement, expanded vermiculite Moss brick for water purification, characterized in that it comprises at least one selected from the group consisting of cement (KS L 5216), expandable hydraulic cement (KS L 5217), Masonry cement (KS L 5219), and super-steel cement. Manufacturing method.

The method of claim 1, wherein the water content in step 1) is 20 to 30% by weight based on the total weight of cement.

According to claim 1, wherein the microorganism in step 3) is Bacillus amyloliquefaciens; Lysinibacillus fusiformis; Pseudochrobactrum saccharolyticum; Lysinibacillus sphaericus; Aeromonas encheleia; Klebsiella pneumoniae; Aeromonas media; Raoultella ornithinolytica; Method for producing a moss brick for water purification, characterized in that it comprises one or more selected from the group consisting of Comamonas thiooxidans.

Mossy brick for water purification prepared by the method of any one of claims 1 to 4.