KR102472873B1 - Filter press dehydrator with deodorization function using filter cloth as a carrier for microorganisms that decompose odor-causing substances - Google Patents

Abstract

Disclosed is a filter press dehydrator with a deodorizing function using a filter cloth as a carrier for microorganisms that decompose odor-causing substances. The filter press dehydrator includes: a plurality of filter plates for compressing sludge by forming a filtering chamber for accommodating the sludge; filter cloths provided on both sides of each filter plate; a microorganism supply tank configured to store microorganisms supplied to the filter cloths; and a spraying unit connected to the microorganism supply tank by a microorganism supply pipe and spraying the microorganisms supplied through the microorganism supply pipe to the filter cloths so that the filter cloths can support the microorganisms.

Description

Filter press dehydrator with deodorization function using filter cloth as a carrier for odor-causing substances decomposing microorganisms

The present invention relates to a filter press dehydrator for removing moisture contained in sludge generated in a water treatment process.

The filter press, which is applied to various industrial fields such as food/chemical/civil engineering/construction/environment, etc., converts sludge in suspension state supplied into the device into solid and liquid, that is, sludge in the form of water and solids, by means of a filter medium composed of a filter plate and filter cloth. refers to a device that compresses and separates For example, Korean Patent Registration No. 10-0598675 (July 3, 2006) discloses an example of a filter press.

In general, the dehydrated cake produced in the compression/filtration/dehydration process of the filter press contains some degree of viscosity. Therefore, even if the filter plate is opened after filtration, the dehydrated cake formed between the filter cloths is not completely separated and discharged, and the sludge remaining in the filter cloth causes odor until the subsequent process is performed.

In particular, in the solid-liquid separation process for reducing the moisture content of sludge, the concentration of odorous gas increases. The dehydration cake discharged after the dehydration process and the odor gas generated during the transportation stage cause safety problems for machine operators and cause mechanical corrosion, and furthermore, they are discharged outside the treatment plant and become the subject of civil complaints from residents in nearby residential areas. do.

In order to solve this problem, a technique of washing the filter cloth with high pressure pressure water or applying vibration is sometimes applied, but in the case of sewage sludge with a high proportion of organic matter, it is difficult to derive an appropriate effect due to its high viscosity.

One object of the present invention is,

Dehydration and deodorization are performed simultaneously by reducing odors from sludge and dehydration cake in the process of dehydrating the sludge supplied into the filter cloth attached to the chamber of the filter press by high-pressure compression and discharging it from the inside of the filter cloth to the outside in the form of a cake. It is to propose an implemented filter press dehydrator.

The present invention is to propose a filter press dewatering machine configured to remove the odor of sludge and dewatering cake by means of microorganisms.

The present invention is to propose a filter press dehydrator having a configuration capable of increasing the survival stability and activity of microorganisms that remove the odor of sludge and dewatering cake.

The present invention is to provide a filter press dehydrator having a configuration capable of preventing the overgrowth of microorganisms that remove the odor of sludge and dewatering cake.

In order to achieve the object of the present invention, a filter press dehydrator with a deodorizing function using the filter cloth according to an embodiment of the present invention as a carrier for odor-causing substance decomposing microorganisms forms a chamber for receiving sludge to compress the sludge a plurality of filter plates; Filter cloth provided on both sides of each filter plate; a microorganism supply tank configured to store microorganisms supplied to the filter cloth; and a spraying unit connected to the microorganism supply tank by a microorganism supply pipe and spraying the microorganisms supplied through the microorganism supply pipe to the filter fabric so that the microorganisms are supported in the filter fabric.

The injection unit has a plurality of injection holes spaced apart from each other in a horizontal direction, and is formed to be movable along the arrangement direction of the plurality of filter plates, so that a filter cloth to be sprayed with microorganisms can be changed, and the microorganisms are sprayed while moving in a vertical direction. It may be made to spray microorganisms to the target filter cloth.

The injection unit may be provided to spray the microorganisms to the two filter plates at the same time by spraying the microorganisms to the filter cloth to be sprayed while moving in a vertical direction between the plurality of filter plates.

The filter press dehydrator may include a washing water supply tank configured to store washing water sprayed onto the filter cloth; Further comprising a pressurized water supply pipe connected to the washing water supply tank and receiving washing water from the washing water supply tank, wherein the pressurized water supply pipe joins the microorganism supply pipe at at least one point to supply washing water to the filter cloth through the injection unit. It is formed to supply, and an on-off valve is installed in at least one of the pressurized water supply pipe and the microorganism supply pipe, or an on-off valve is installed at a junction of the pressurized water supply pipe and the microorganism supply pipe, and the on-off valve An object to be injected through the injection unit may be determined by selective opening and closing.

The filter press dehydrator further includes a spray control unit configured to control the selective opening and closing of the on-off valve, and after performing the dehydration process 3 to 10 times, the spray control unit injects the microorganisms into the filter plates at least once. The opening/closing valve may be controlled to inject ash.

When the injection unit is driven, the injection control unit first performs a cleaning operation of removing sludge and microbial corpses present on the surface of the filter fabric of the filter press through control of the opening/closing valve, and after the cleaning operation, microorganisms are removed from the filter fabric. can be applied to.

Nutrients of the microorganisms may be stored together with the microorganisms in the microorganism supply tank.

In order to achieve the object of the present invention, a filter press dehydrator having a deodorizing function using microorganisms according to another embodiment of the present invention includes a plurality of filter plates for compressing the sludge by forming a room for receiving the sludge; And a filter cloth provided on both sides of each filter plate and formed of a fabric made of warp and weft yarns, wherein the filter cloth has pores and functions as a carrier for supporting microorganisms, and soil microorganisms having a deodorizing function are supported in the filter cloth can be made possible.

The pore size of the filter cloth may be 9 μm to 76 μm.

In the filter plate, at least one sludge core may be formed at a center portion and at least one filtrate core may be formed at a corner portion.

The effects of the present invention obtained through the above solutions are as follows.

The filter press dehydrator according to the present invention can effectively remove odor-causing components such as nitrogen compounds contained in sludge using microorganisms. Accordingly, the concentration of the odorous gas generated in the solid-liquid separation process of the sludge is reduced, so that the odor does not occur when the dewatering cake is discharged.

In addition, according to the present invention, the survivability of microorganisms can be secured and the activity of microorganisms can be increased by allowing microorganisms and nutrients to be supported on the filter cloth of the filter press dehydrator.

In addition, according to the present invention, excessive growth of microorganisms can be prevented by adjusting the supply amount of microorganisms and nutrients according to the moisture content of the dehydrated cake generated in the filter press dehydrator and the number of dehydration processes.

1 is a conceptual view showing the overall appearance of a filter press dehydrator according to an embodiment of the present invention.
Figure 2 is an enlarged view showing the state of the injection unit in the filter press dehydrator of Figure 1;
Figure 3 is a conceptual view showing the appearance of a filter plate used in the filter press dehydrator of Figure 1;
4 is a conceptual view illustrating a process in which a filter plate is primarily washed by a spraying unit in the filter press dehydrator of FIG. 1;
5 is a conceptual view illustrating a process in which a filter plate is secondarily washed by a spraying unit in the filter press dehydrator of FIG. 1;
Figure 6 is a SEM photograph showing the pore state of the filter cloth provided on the filter plate in the filter press dehydrator of Figure 1;
Figure 7 is a SEM photograph showing the appearance of microorganisms attached to the carrier of the filter cloth provided on the filter plate in the filter press dehydrator of Figure 1;

Hereinafter, a filter press dehydrator 100 with a deodorizing function using the filter cloth according to the present invention as a carrier for odor-causing substance decomposing microorganisms will be described in more detail with reference to the drawings.

In this specification, the same or similar reference numerals are assigned to the same or similar components even in different embodiments, and overlapping descriptions thereof will be omitted.

In describing the embodiments disclosed in this specification, if it is determined that detailed descriptions of related known technologies may obscure the gist of the embodiments disclosed in this specification, the detailed descriptions thereof will be omitted.

The accompanying drawings are only for easy understanding of the embodiments disclosed in this specification, and the technical idea disclosed in this specification is not limited by the accompanying drawings, and all changes and equivalents included in the spirit and technical scope of the present invention are included. It should be understood to include water or substitutes.

In the following description, singular expressions include plural expressions unless the context clearly dictates otherwise.

In this application, terms such as "comprise" or "have" are intended to designate that there is a feature, number, step, operation, component, part, or combination thereof described in the specification, but one or more other features It should be understood that the presence or addition of numbers, steps, operations, components, parts, or combinations thereof is not precluded.

1 is a conceptual diagram showing the overall appearance of a filter press dehydrator according to an embodiment of the present invention, and FIG. 2 is an enlarged view showing the appearance of a spraying unit in the filter press dehydrator of FIG. 1 . Here, one embodiment may be referred to as the first embodiment.

1 and 2, the filter press dehydrator 100 to which the deodorizing function using microorganisms according to the first embodiment is applied includes a plurality of filter plates 110, a filter cloth 111, a microorganism supply tank 120, and a spraying unit. (130).

The filter plate 110 is formed to compress the sludge by forming a filtering chamber for accommodating the sludge. In addition, a plurality of filter plates 110 are arranged to overlap each other to form a linearly moving filter unit 110a. As will be described later, the filter plate 110 may have at least one sludge core 112 formed at a central portion and at least one filtrate core 113 formed at a corner portion (see FIG. 3 ).

The filter cloth 111 is provided on both sides of each filter plate 110, and is formed of a fabric composed of warp yarns 111a and weft yarns 111b as will be described later (see FIG. 6). In addition, the filter cloth 111 is provided with pores 111c to function as a carrier supporting microorganisms (see FIG. 7).

The filter press 170 is formed to compress the sludge to create a dewatered cake by removing moisture contained in the sludge. The filter press 170 includes a plurality of filter plates 110 that are linearly movable, and filter cloths 111 are installed on the plurality of filter plates 110 . When the plurality of filter plates 110 are brought into close contact with each other by linear movement, when the sludge is introduced, the sludge is compressed by the filter plates 110. Accordingly, the solids in the sludge are concentrated in the inner space of the filter plate 110, and the water contained in the sludge is drained through the filter cloth to be separated and recovered in the form of a dewatered cake with a low moisture content.

The microorganism supply tank 120 is formed to store microorganisms supplied to the filter cloth 111 .

An agitator 121 is installed in the microbial supply tank 120 . The stirrer 121 is installed to be immersed in an aqueous solution containing microorganisms filled in the inner space of the microorganism supply tank 120, and is formed to stir the contents filled in the microorganism supply tank 120. For example, microorganisms and nutrients may be introduced into the microorganism supply tank 120, and the agitator 121 mixes the microorganisms and nutrients to suppress the concentration of microorganisms or nutrients in a specific location.

For example, the aqueous solution containing the microorganisms may include a soil microbial spawn agent. Soil microbial inoculum effectively treats sulfur compounds (H ₂ S, CH ₃ SH, etc.) and nitrogen compounds (NH ₃ , Amine, etc.) generated from sewage and wastewater treatment plants, manure and livestock manure treatment plants, water purification plants, waste landfills, composting facilities, etc. It is a microorganism isolated and identified for

Soil microbial spawn agents separated and identified from soil samples are relatively easy to obtain, and contain various types of microorganisms, allowing a wide selection of microorganisms to be used as needed. Therefore, if a soil microbial spawn agent is selected as a deodorant, a customized microorganism can be selected according to the sludge treatment site. The selection of customized microorganisms can be done by continuously feeding the microorganisms to be separated and identified.

Meanwhile, the filter press dehydrator 100 includes a sludge supply tank 150. The sludge supply tank 150 is formed to store the sludge to be dehydrated in the filter press 170. An agitator 151 is installed in the sludge supply tank 150. The stirrer 151 is installed to be immersed in the sludge filled in the internal space of the sludge supply tank 150, and is formed to agitate the contents filled in the sludge supply tank 150. For example, sludge and a coagulant may be added to the sludge supply tank 150, and the agitator 151 mixes the sludge and the coagulant to form floc.

When the amount of coagulant is increased, more flocs are formed and the dewatering effect is improved, but the amount of dewatering cake is also increased. Therefore, iron chloride can be used as a coagulant with good floc formation effect without excessively increasing the amount of dewatering cake.

The sludge supply tank 150 is connected to the filter press 170 by a sludge supply pipe 156. A valve 156a and a pump 156b are installed in the sludge supply pipe 156. When the pump operates while the valve 156a is open, the sludge stored in the sludge supply tank 150 is supplied to the filter press 170 through the sludge supply pipe 156.

Since the sludge filled in the sludge supply tank 150 is not a living organism, the agitator 151 is irrelevant to the activity or survival. On the other hand, since the soil microbial spawn agent filled in the microbial supply tank 120 is a living organism, the agitator 121 should not affect activity or survival.

Considering this point, the agitator 121 of the microorganism supply tank 120 may rotate more slowly than the agitator 151 of the sludge supply tank 150. For example, when the agitator 151 of the sludge supply tank 150 rotates at about 50 to 100 RPM, the agitator 121 of the microorganism supply tank 120 may rotate at about 10 to 20 RPM.

Nutrients may be stored together in the microbial supply tank 120 to secure survival stability and increase activity of the soil microbial spawn. The nutrient substance may include, for example, a first nutrient substance, a second nutrient substance, and a third nutrient substance, which are mixed in an appropriate amount per liter of soil microbial spawn.

The first nutrient is at least one selected from the group consisting of KH ₂ PO ₄ , K ₂ HPO ₄ , KNO ₃ , NaCl, and MgSO ₄ , and each is 0.1 g/ℓ or more and 1.2 g/ℓ per 1 liter of the soil microbial spawn agent. It is included in the following amounts. To explain each meaning here, assuming that KH ₂ PO ₄ and K ₂ HPO ₄ are included in the first nutrient, KH ₂ PO ₄ is 0.1 g/ℓ or more per 1 liter of soil microbial spawn agent, 1.2 g/ℓ or more. ℓ or less, K ₂ HPO ₄ also means 0.1 g / ℓ or more and 1.2 g / ℓ or less per 1 liter of soil microbial spawn agent.

The second nutrient substance is selected from the group consisting of CaCl ₂ .2H ₂ O, EDTA.Na2(H ₂ O) ₂ , and FeCl ₂ .4H ₂ O, each exceeding 0 per liter of the soil microbial spawn agent; It is included in an amount of 0.1 g/L or less.

The third nutritional substance is composed of CoCl ₂ 6H ₂ O, MnCl ₂ 2H ₂ O, ZnCl ₂ , H ₃ BO ₃ , NiCl ₂ 6H ₂ O, NaMoO ₄ 2H ₂ O, and CuCl ₂ 2H ₂ O. At least one is selected from the group, and is included in an amount of more than 0 and less than 0.01 g / L, respectively, per 1 liter of the soil microbial spawn agent.

The lower limits of the second nutritional substance and the third nutritional substance both exceed zero, but within the nutritional substance, the third nutritional substance has a smaller composition ratio than the second nutritional substance. The composition ratio of each of the third nutritional substances is smaller than the composition ratio of each of the second nutritional substances, and the sum of the composition ratios of the third nutritional substances is smaller than the sum of the composition ratios of the second nutritional substances. Within a nutritional substance, the first nutritional substance has a greater compositional ratio than the second nutritional substance.

As an example, the preparation ratio of nutritional substances may be configured as follows.

As a result of the experiment, it was confirmed that the nutrient substance in the preparation ratio defined in the present invention has a sufficient effect on increasing the survival and activity of the soil microbial spawn agent.

In addition, the filter press dehydrator 100 includes a filtrate collecting tank 160. The filtrate collecting tank 160 is formed to collect the filtrate produced by the compression process in the filter press 170 . When the sludge is dehydrated by the compression process, it is separated into a solid dewatering case and a dewatering liquid, and the filtrate refers to the dewatering liquid here. The filtrate collecting tank 160 is connected to the filter press 170 by a filtrate discharge pipe 166.

The injection unit 130 is connected to the microorganism supply tank 120 through a microorganism supply pipe 126 . The injection unit 130 injects the microorganisms supplied through the microorganism supply pipe 126 onto the filter cloth 111 so that the microorganisms are supported on the filter cloth 111 .

The structure or shape of the spraying unit 130 is not particularly limited as long as it is a structure capable of spraying microorganisms to the filter cloth 111, and for example, a plurality of spraying holes 131 spaced apart from each other along the horizontal direction It can be made by providing.

In addition, the injection unit 130 may include, for example, a shelf 171 installed on one side of the filter press 170, a guide panel 172 installed to extend upward and downward on the upper portion of the shelf 171, It can be installed on the injection unit installation unit 175 including a fixing bar 174 on which both ends are mounted by a pair of roller members 173 installed at both ends of the guide panel 172 to be movable in the vertical direction. have.

Therefore, a pair of vertical pipes 176a and 176b are mounted on the fixing bar 174, and an injection unit 130 in the form of a horizontal pipe connecting them to each other is installed at the ends of the vertical pipes 176a and 176b. The injection unit 130 may be implemented. Here, a plurality of injection ports 131 formed to be spaced apart from each other along the horizontal direction may be installed in the horizontal pipe-shaped injection unit 130 . In addition, a connection hose 177 connected to the microorganism supply pipe 126 and formed of a flexible material is installed in the vertical pipe 176b on one side of the vertical pipes 176a and 176b.

Therefore, in the spraying part 130 structure as described above, the pair of roller members 173 are moved in the vertical direction to spray the microorganisms to the filter cloth 111 to be sprayed with microorganisms while the spraying part 130 moves in the vertical direction. can be implemented to

In addition, the spraying unit 130 uses, for example, a lower roller (not shown) to move the guide panel 172 along the arrangement direction of the plurality of filter plates 110 in the spraying unit installation unit 175. By implementing through, it can be made to be movable along the arrangement direction of the plurality of filter plates 110, so that the filter cloth 111 to be sprayed with microorganisms can be easily changed.

Therefore, the injection unit 130 sprays microorganisms more quickly and accurately to the plurality of filter plates 110 through the structure of the filter press 170 for spraying microorganisms, so that stable deodorization performance can be exhibited. .

In addition, the spraying unit 130 may be provided to spray the microorganisms to the filter cloth 111 to be sprayed while moving in a vertical direction between the plurality of filter plates 110, that is, the spraying unit 130 By being provided to spray the microorganisms to the filter cloth 111 while moving in a vertical direction between the two filter plates 110, the microorganisms can be sprayed to the plurality of filter plates 110 more quickly and effectively.

The filter press dehydrator 100 is connected to the washing water supply tank 140 formed to store the washing water sprayed on the filter cloth 111 and the washing water supply tank 140 to extract the washing water from the washing water supply tank 140. A pressurized water supply pipe 146 to be supplied may be further included.

The washing water supply tank 140 and the pressurized water supply pipe 146 join the pressurized water supply pipe 146 and the microorganism supply pipe 126 so as to be connected to the microorganism supply pipe 126. The spraying unit 130 may be used as a washing water spraying unit.

For example, the pressurized water supply pipe 146 joins the microorganism supply pipe 126 at at least one point (joining point) 147 to supply washing water to the filter cloth 111 through the injection part 130. It can be formed to supply.

Here, valves may be installed around the pressurized water supply pipe 146 and the microorganism supply pipe 126 to selectively spray microorganisms or washing water to the filter cloth 111 . Therefore, the filter press dehydrator 100 can maximize the cleaning effect of the filter plate 110 by selectively spraying microorganisms and washing water to the filter cloth 111, and has a deodorizing effect through appropriate supply of microorganisms and nutrients. can be further improved.

The arrangement of valves around the pressurized water supply pipe 146 and the microorganism supply pipe 126 is not particularly limited as long as the arrangement structure is configured to selectively spray microorganisms or washing water to the filter cloth 111. Open/close valves 126a and 146a are installed in at least one of the pressurized water supply pipe 146 and the microorganism supply pipe 126, or at a junction of the pressurized water supply pipe 146 and the microorganism supply pipe 126. An opening/closing valve (ex, three-way valve, not shown) is installed, and an object to be sprayed through the injection unit 130 may be determined by selectively opening and closing the opening/closing valve.

Specifically, in the microorganism supply pipe 126, a first on-off valve 126a is installed upstream of the joining point 147 with the pressurized water supply pipe 146, and in the pressurized water supply pipe 146 A second opening/closing valve 146a may be installed on an upstream side of a joining point with the microorganism supply pipe 126 .

Therefore, the filter press dehydrator 100 can be implemented such that the object to be injected through the injection unit 130 is determined by selectively opening and closing the first on-off valve 126a and the second on-off valve 146a. have.

Alternatively, a three-way valve (not shown) is installed at the joining point 147 of the microorganism supply pipe 126 and the pressurized water supply pipe 146, and the injection unit 130 is opened and closed selectively. It can be implemented so that the object to be injected through is determined.

Here, the filter press dehydrator 100 is configured to control the selective opening and closing of the first on-off valve 126a and the second on-off valve 146a or the on-off valve including the three-way valve 180 may further include.

The injection control unit 180 is implemented to obtain driving state information of the filter presses 170, and according to the dehydration process of the filter press 170, the first on-off valve 126a and the second on-off valve ( 146a) or by selectively controlling the opening and closing of the three-way valve, selective spraying of microorganisms or washing water to the filter cloth 111 may be controlled.

The method of spraying the washing water or microorganisms on the filter cloth 111 by the spray control unit 180 is not particularly limited. For example, after the filter press 170 performs the dehydration process 3 to 10 times , The injection control unit 180 may be configured to control the first opening/closing valve 126a and the second opening/closing valve 146a or the three-way valve to inject the microorganism onto the filter plates at least once.

In addition, the injection control unit 180 controls the first on-off valve 126a and the second on-off valve 146a or the on-off valve including the three-way valve to control the filter cloth 111 of the filter press 170. ) A cleaning operation (see FIGS. 4 and 5) to remove sludge and dead microorganisms present on the surface may be performed first, and microorganisms may be applied to the filter cloth 111 after the cleaning operation.

That is, as the filter press 170 repeats the dehydration process, the dead bodies of microorganisms increase on the surface of the filter cloth 111 of the filter press 170. Therefore, after 3 to 10 appropriate dehydration processes, the first on-off valve 126a and the second on-off valve 146a or the three-way through the injection control unit 180 in a state in which a certain amount of dead bodies of microorganisms are accumulated By controlling the on-off valve including the valve to first remove the sludge and microbial dead bodies present on the surface of the filter cloth 111, and then to apply the microorganisms to the surface of the filter cloth 111, the activity of microorganisms and deodorization performance can be further improved. have.

3 is a conceptual diagram showing a filter plate used in the filter press dehydrator of FIG. 1, and FIG. 4 is a conceptual diagram showing a process in which the filter plate is primarily washed by a spraying unit in the filter press dehydrator of FIG. 1, and FIG. is a conceptual diagram showing a process in which the filter plate is secondarily washed by the injection unit in the filter press dehydrator of FIG. 1 .

6 is a SEM photograph showing pores of the filter cloth provided on the filter plate in the filter press dehydrator of FIG. 1, and FIG. 7 is a SEM photograph showing the appearance of microorganisms attached to the carrier of the filter cloth provided on the filter plate in the filter press dehydrator of FIG. 1 to be.

3 to 7, a filter press dehydrator 100 with a deodorizing function using filter cloth as a carrier for odor-causing substance decomposing microorganisms forms a filter press room 116 for receiving sludge and compresses the sludge. It is provided on both sides of the filter plate 110 and each filter plate 110, and may include a filter cloth 111 formed of a fabric made of warp yarns 111a and weft yarns 111b.

The filtering plates 110 are provided with a plurality of filtering plates that are arranged to overlap each other and move linearly to form the filtering unit 110a. In this filter plate 110, at least one sludge core 112 is formed at the center and at least one filtrate core 113 is formed at the corner.

A passage composition part 112a may be formed at a position where the sludge core 112 is formed. The passage composition part 112a may be coupled to both sides of the filter plate through fastening members (not shown) such as bolts. The passage composition part 112a may include a convex portion 112aa to which the fastening member is coupled and a concave portion 112ab to which the fastening member is not coupled. The convex portion 112aa and the concave portion 112ab are alternately and repeatedly formed along the circumference around the sludge core 112 .

The convex part 112aa faces the convex part of the adjacent filter plate (not shown), and the concave part 112ab therebetween allows sludge to be supplied from the sludge core 112 to the filter chamber 116 (112ab) ) is formed. Since the flow channels 112ab are formed in plurality in the radial direction, the sludge can be evenly supplied to the top, bottom, left and right sides of the filter plate 111 .

The plurality of filter plates 110 may be linearly moved by hydraulic pressure, so that the filter plates may come into close contact with each other or may be spaced apart from each other. For the linear movement of the filtering plate by hydraulic pressure, filtering plate holders 114 protrude on the left and right sides of the filtering plate.

The filter cloth 111 is provided on both sides of each filter plate 110 and is formed of a fabric composed of warp yarns 111a and weft yarns 111b. In addition, the filter cloth 111 is provided with pores 111c to function as a carrier supporting microorganisms, and is formed so that soil microorganisms having a deodorizing function are supported.

Here, the size of the pores 111c of the filter cloth 111 is a size that effectively separates pollutant particles and water contained in the sludge, and at the same time, the microorganisms supported in the filter cloth do not easily escape and maintain the supported state well It is preferable to form. In this aspect, the pore size of the filter cloth 111 may be formed to, for example, 9 μm to 76 μm.

When the size of the pores 111c of the filter cloth 111 is less than 9 μm, it is difficult to support soil microorganisms ranging in size from about 10 μm to 100 μm to the filter cloth 111, so that the microorganisms are easily separated from the filter cloth 111 and removed. , which is undesirable because the deodorizing effect is hardly exhibited. In addition, when the size of the pores 111c of the filter cloth 111 exceeds 76 μm, contaminant particles are not well separated from the sludge accommodated in the filter chamber 116 of the filter plate 110 and are mixed in the filtrate, so that contaminants from the sludge This is undesirable because a problem of poor separation occurs.

Regarding the size of the pore 111c of the filter cloth 111, the optimal pore size of the general filter cloth 111 considering the optimum dehydration efficiency for various types of sludge may be, for example, 10 μm to 80 μm. The optimal pore size when considering the prevention of the escape of microorganisms in the optimal pore size of the general filter cloth 111 may be defined as 90% to 95% of 10 μm to 80 μm.

The foregoing is merely illustrative, and various modifications may be made by those skilled in the art to which the present invention belongs without departing from the scope and technical spirit of the described embodiments. The foregoing embodiments may be implemented individually or in any combination.

100: filter press dehydrator
110: filter plate
120: microorganism supply tank
130: injection unit
140: washing water supply tank
150: sludge supply tank
160: filtrate tank
170: filter press
180: injection control unit

Claims (10)

A plurality of filter plates for compressing the sludge by forming a filter chamber for accommodating the sludge;
Filter cloth provided on both sides of each filter plate;
a microorganism supply tank configured to store microorganisms supplied to the filter cloth; and
A spraying unit connected to the microbial supply tank by a microbial supply pipe and spraying the microorganisms supplied through the microbial supply pipe to the filter cloth so that the microorganisms are supported on the filter cloth,
A filter press dehydrator with a deodorizing function that utilizes filter cloth as a carrier for microorganisms that decompose odor-causing substances.
According to claim 1,
The injection unit has a plurality of injection ports formed to be spaced apart from each other along a horizontal direction,
It is formed to be movable along the arrangement direction of the plurality of filter plates, so that the filter cloth to be sprayed with microorganisms can be changed, and the microorganisms are sprayed on the filter cloth to be sprayed with microorganisms while moving in the vertical direction.
A filter press dehydrator with a deodorizing function that utilizes filter cloth as a carrier for microorganisms that decompose odor-causing substances. According to claim 1,
The injection unit is provided to spray the microorganisms to the two filter plates at the same time by spraying the microorganisms to the filter cloth to be sprayed while moving in an up and down direction between the plurality of filter plates.
A filter press dehydrator with a deodorizing function that utilizes filter cloth as a carrier for microorganisms that decompose odor-causing substances. According to claim 1,
The filter press dehydrator,
a washing water supply tank configured to store washing water sprayed onto the filter cloth;
Further comprising a pressurized water supply pipe connected to the washing water supply tank and receiving washing water from the washing water supply tank,
The pressurized water supply pipe is formed to join the microorganism supply pipe at at least one point to supply washing water to the filter cloth through the spraying part,
An on-off valve is installed on at least one of the pressurized water supply pipe and the microorganism supply pipe, or an on-off valve is installed at a junction of the pressurized water supply pipe and the microorganism supply pipe,
The object to be injected through the injection unit is determined by the selective opening and closing of the on-off valve.
A filter press dehydrator with a deodorizing function that utilizes filter cloth as a carrier for microorganisms that decompose odor-causing substances. According to claim 4,
The filter press dehydrator further comprises an injection control unit formed to control selective opening and closing of the on-off valve,
After performing the dehydration process 3 to 10 times, the spray control unit controls the on-off valve to spray the microorganisms to the filter plates at least once.
A filter press dehydrator with a deodorizing function that utilizes filter cloth as a carrier for microorganisms that decompose odor-causing substances. According to claim 5,
When the injection unit is driven, the injection control unit first performs a cleaning operation of removing sludge and microbial corpses present on the surface of the filter fabric of the filter press through control of the opening/closing valve, and after the cleaning operation, microorganisms are removed from the filter fabric. to be applied to
A filter press dehydrator with a deodorizing function that utilizes filter cloth as a carrier for microorganisms that decompose odor-causing substances. According to claim 1,
In the microbial supply tank, nutritional substances of the microorganisms are stored together with the microorganisms,
A filter press dehydrator with a deodorizing function that utilizes filter cloth as a carrier for microorganisms that decompose odor-causing substances. A plurality of filter plates for compressing the sludge by forming a filter chamber for accommodating the sludge; and
It is provided on both sides of each filter plate and includes a filter cloth formed of a fabric composed of warp and weft yarns,
The filter cloth is provided with pores and functions as a carrier for supporting microorganisms,
Soil microorganisms having a deodorizing function are supported on the filter cloth,
A filter press dehydrator with a deodorizing function that utilizes filter cloth as a carrier for microorganisms that decompose odor-causing substances. According to any one of claims 1 or 8,
The pore size of the filter cloth is 9 μm to 76 μm,
A filter press dehydrator with a deodorizing function that utilizes filter cloth as a carrier for microorganisms that decompose odor-causing substances. According to any one of claims 1 or 8,
The filter plate has at least one sludge core formed at the center and at least one filtrate core formed at the corner
A filter press dehydrator with a deodorizing function that utilizes filter cloth as a carrier for microorganisms that decompose odor-causing substances.

Images