KR101183090B1 - Deodorizing apparatus with bio complex for treating malodor gas - Google Patents

Abstract

PURPOSE: A complex bio deodorizing apparatus for treating bad odor gas is provided to optimally maintain the activity of microorganisms by optimizing the chemical growing environment of microorganisms in porous ceramic carrier layers. CONSTITUTION: A complex bio deodorizing apparatus(100) for treating bad odor gas includes a blowing fan(110), a wet washing part(120), a washing water supplying tank(130), a bio filter part(140), an alkali water supplying tank(150a), an acid water supplying tank(150b), a chemical washing part(160), and a chemical supplying tank(170). The blowing fan sucks bad odor gas and blows the bad odor gas into the apparatus. The bad odor gas downwardly passes through the wet washing part. The washing water supplying tank circulates washing water from the wet washing part to the wet washing part. The bad odor gas upwardly downwardly passes through the limestone layers and the porous ceramic carrier layers of the bio filter part. The alkali water supplying tank and the acid water supplying tank supply alkali water and acid water to the bio filter part.

Description

Deodorizing apparatus with bio complex for treating malodor gas

The present invention passes the malodorous gas through a three-stage composite biodeodorizer equipped with a wet cleaning device, a primary and a secondary biofilter, and a chemical liquid cleaning device, and sequentially passes the malodorous gas into a physical deodorization, biological deodorization, and chemical deodorization process. The present invention relates to a composite bio deodorization apparatus capable of performing effective deodorization of odor gas.

Odors generated in sewage treatment plants, food treatment plants, livestock wastewater treatment plants, sludge incineration and drying facilities, landfills, and various chemical plants vary greatly in the composition of contaminants depending on the source or source of occurrence. And sulfur compounds such as mercaptan, nitrogen compounds such as ammonia and amine, volatile organic compounds (VOCs) and volatile sulfur compounds such as benzene, toluene, ethylbenzene, and xylene.

The odor components are generally converted to water and carbon dioxide to be removed, and the odor gas treatment technologies currently used are largely physical and chemical deodorization methods such as activated carbon adsorption, chemical cleaning, ozone oxidation, and combustion deodorization, and soil microorganisms. There are biological deodorization methods such as treatment method, activated sludge method and bio filter.

These methods may be used alone or in combination of two or more depending on the treatment environment. The physical and chemical deodorization methods have problems in operating costs such as chemical and material costs, and the biological deodorization method requires a large area and pressure. There is a disadvantage in that a high cost of power is consumed.

Accordingly, in recent years, the interest in the method for deodorizing the filled microorganism using the microorganism carrier having high deodorization efficiency can be operated in a small space of the biological deodorizing method.

Carrier-filled microorganism deodorization method is a method of filling a packed column with carriers immobilized with microorganisms and removing odor gas therein. The introduced odor gas is decomposed by microorganisms and the energy and decomposition substances generated by the decomposition are removed. It is a principle that the odor component is decomposed and removed by maintaining growth using microorganisms.

Biological methods using the microorganisms as described above have been mainly used for general wastewater and wastewater treatment, but recently, it has been applied to the field of removing odor and its utility is increasing.

These technologies in the atmospheric field focus on the microorganisms immobilized on the carrier at high concentrations so that they can be cultured and grown stably. These microorganisms require water and nutrient supply for growth and proliferation, and in particular, biological deodorization. In the case of the device, it is very important to prevent the microorganisms growing on the carrier from being subjected to chemical shock due to the rapid change in the odor gas.

As an example of the chemical impact, a sudden change in the hydrogen ion index (pH) inhibits the decomposition efficiency of the odor component of the microorganisms and causes the death of microorganisms, and continuously vibrates the deodorizing device by accelerating the change of the hydrogen ion index. Brings about.

When hydrogen sulfide (H ₂ S), which is an incoming sulfur-based odor component, is 30 ppm or more, sulfuric acid (H ₂ SO ₄ ) is produced by reacting with oxygen and water, and when high concentration of hydrogen sulfide of 50 ppm or more is introduced, it passes through a carrier where microorganisms are fixed and grown. When the microorganisms of the carrier are dead due to high acidity, the deodorizing function stops until the microorganisms are reinoculated.

In addition, the introduced ammonia (NH ₃ ) reacts with water to form ammonium hydroxide (NH ₄ OH), which is alkaline, and is converted to hydroxylamine (NH ₂ OH) by microorganisms, indicating a strong base in water. The pH of the deodorizer is changed according to the concentration of ammonia, and the growth environment of the microorganisms is changed, thus adversely affecting the microorganisms.

In order to solve this problem, the present invention is provided with a chemical liquid cleaning pretreatment deodorizing device in the front end of the deodorizing device in Korea Patent No. 1009339, microorganisms to the high concentration of acid and alkaline odor components contained in the collected malodorous gas The present invention relates to a biofilter-type deodorizer which allows the microorganisms to grow in an optimal environment by neutralizing and removing the biofilter in the previous step.

According to the present invention, two filter units including a polyurethane foam layer and a polling layer are provided at a front stage of the main body having a porous ceramic carrier layer and a limestone layer in which microorganisms are fixed and grown, and the first and second filter units are connected in series. The pretreatment unit is configured to supply acidic water to the first filter unit and alkaline water to the second filter unit.

The apparatus neutralizes and removes alkaline odors and acidic odors before microorganisms decompose and remove odors, thereby reducing the chemical impact and load of microorganisms growing on the ceramic carrier layer, thereby improving the efficiency of removing odors. to provide.

However, the odorous components vary greatly depending on the source of occurrence, and the types of microorganisms to remove them according to the type of odorous components also vary, and the optimum growth conditions of each microorganism are also different for each microorganism, so that the carrier layer fixed and grown microorganisms Maintaining a constant chemically has the disadvantage that each of the microorganisms that are different from each other in the optimum growth conditions do not maintain the best active state.

Therefore, in order to remove odor components more efficiently as a biological deodorization method, in addition to maintaining the growth environmental conditions of the microorganisms, it is necessary to create a growth environment so that each microorganism can maintain the best active state.

The present invention is to solve the above problems, in the removal of the complex odor gas by the bio-filter method, according to the type of odor components to separate and apply the type of microorganisms to decompose it, and by optimizing the growth conditions for each type of microorganism odor It is to provide a composite bio deodorizer that can remove the gas efficiently.

In order to solve the above problems, the present invention is a blowing fan 110 for sucking the odor gas and blowing into the device; Wet cleaner 120 through which the odor gas flows from the blowing fan 110 and passes through the polling layer 121 in a downward flow; A washing water supply tank 130 which circulates and supplies the washing water introduced from the wet washing unit 120 to the wet washing unit 120 again; The first biofilter unit 140a and the first passage through which the odor gas flows from the wet cleaning unit 120 and passes through the limestone layer 142a and the porous ceramic carrier layer 141a fixed and grown by the microorganisms in an upward flow. Biofilter composed of the second biofilter unit 140b passing through the porous ceramic carrier layer 141b and the limestone layer 142b in which the odor gas flows from the biofilter unit 140a and the microorganisms are fixed and grown. Unit 140; An alkaline water supply tank 150a into which an alkaline chemical is introduced and the alkaline water whose hydrogen ion index is adjusted is circulated and supplied to the first biofilter unit 140a; An acidic water supply tank 150b into which an acidic chemical is introduced and acidic water whose hydrogen ion index is controlled is circulated and supplied to the second biofilter unit 140b; A chemical liquid cleaner 160 in which the clean gas from which the malodorous component of the malodorous gas has been removed is introduced from the biofilter unit 140, passes through the polling layer 161 upward, and is discharged into the atmosphere; And a chemical liquid supply tank 170 for circulating and supplying the chemical liquid introduced from the chemical liquid washing unit 160 to the chemical liquid washing unit 160.

At this time, the composite bio-deodorizer 100 is a control unit 180 for optimizing the growth environment of the microorganisms of the carrier layer (141a, 141b) by receiving a sensed signal and transmitting a control signal according to the input set value; It is preferable to further include.

In addition, the wet cleaner 120 is a washing water injector 123 for spraying the washing water on the upper portion, the polling layer 121 and the polling layer 121 is provided below the washing water injector 123 and located below the polling layer 121 It is preferable that the washing water retention tank 124 be configured.

In addition, the first biofilter unit 140a has an alkaline water retention tank 144a in which the odor gas introduced from the wet cleaner 120 and the alkaline water injected through the alkaline water injector 143a are retained, and the alkaline water stays. Limestone layer 142a positioned above the bath 144a, the limestone layer 142a is installed in contact with the top and spaced apart on the porous ceramic carrier layer 141a and the porous ceramic carrier layer 141a And an alkaline water injector 143a for injecting alkaline water.

In addition, the second biofilter unit 140b is connected to one side of the wall surface of the first biofilter unit 140a so as to flow to each other, and the acidic water injector 143b spraying the acidic water on the upper portion of the second biofilter unit 140b. ), A porous ceramic carrier layer 141b spaced apart from the acidic water injector 143b and a growth space of microorganisms, a limestone layer 142b and a limestone layer (contacted to the lower portion of the porous ceramic carrier layer 141b) 142b) is preferably composed of an acidic water retention tank (144b) located below.

In addition, the chemical liquid washing unit 160 is a chemical liquid retention tank 164, the chemical liquid retention tank 164 in which the clean gas flowing from the biofilter unit 140 and the chemical liquid injected through the chemical liquid injector 162 is retained. The polling layer 161 is disposed in the upper portion, the polling layer 161 is spaced apart on the upper side is preferably composed of a chemical liquid injector 162 for injecting the chemical liquid and the discharge pipe 163 installed on the chemical liquid injector 162. .

In addition, the microorganism fixed and grown on the porous ceramic carrier layer 141a of the first biofilter unit 140a is Bacillus. subtilis , Bacillus circulans , Rhodopseudomonas palustri s, Nitrosomonas sp . , Nitrosospira sp . , Nitrobacter sp . And Nitrospira sp. At least one microorganism selected from the group consisting of, and the microorganism fixed and grown on the porous ceramic carrier layer 141b of the second biofilter unit 140b is Thiobacillus sp . , Thiosphaera sp ., Thiomicrospira sp . And Thermothrix sp . At least one microorganism selected from the group consisting of is preferred.

The composite biodeodorizer for treating malodorous gas according to the present invention distinguishes the malodorous gas from alkaline odor and acidic odor, and effectively neutralizes and removes the malodorous gas in accordance with the physical properties of the malodorous component in the upstream and downstream flow sections of the malodorous gas. Compared to the scale of the device, it is possible to efficiently remove acidic and alkaline odor components.

In addition, by removing the acid and alkali malodorous components, the chemical growth environment of the microorganisms growing on the porous ceramic carrier layer is optimized for each microorganism characteristic to keep the activity of the microorganisms at an optimal level and to increase the survival rate. As a result, microbial supplementation is reduced, which reduces operating costs.

1 is a schematic configuration diagram of a composite bio deodorizer for processing malodorous gas according to an embodiment of the present invention.

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

It is to be understood, however, that the invention is not to be construed as limited to the embodiments set forth herein, but is capable of modifications and equivalents within the spirit and scope of the invention. Will be apparent to those skilled in the art to which the present invention pertains.

In FIG. 1, a composite biodeodorizer for treating a complex malodorous gas according to an embodiment of the present invention is indicated by the reference numeral 100.

The composite bio deodorizing apparatus 100 includes a blowing fan 110 for sucking odor gas and blowing it into the apparatus; In order to pre-treat the malodorous gas introduced from the blower fan 110 before decomposing and removing the microorganisms, the water-soluble malodorous component and particulate dust of the malodorous gas co-flow with the washing water while the malodorous gas passes downward through the polling layer 121. Wet cleaner 120 is removed in contact with (cocurrent flow); Washing water supply tank 130 for supplying the washing water from the wet washing unit 120 and circulating back to the wet washing unit 120; The acid component of the malodorous gas is counter-current (countercurrent) while the malodorous gas introduced from the wet cleaner 120 passes upwardly through the limestone layer 142a and the porous ceramic carrier layer 141a where microorganisms are fixed and grown. The first biofilter unit 140a and the odor gas introduced from the first biofilter unit 140a, which are decomposed and removed by the microorganisms that are neutralized by contact with a flow and the growth environment is controlled by alkaline water, are microorganisms. Microorganisms in which the growth environment is controlled by acidic water are neutralized while alkali components of malodorous gas are contacted with acidic water in parallel while sequentially passing through the fixed and growing porous ceramic carrier layer 141b and limestone layer 142b. A biofilter unit 140 including a second biofilter unit 140b in which malodor gas is decomposed and removed by the second biofilter unit 140b; Alkaline water supply tank 150a for supplying alkaline water from the first biofilter unit 140a of the biofilter unit 140 and supplying it to the first biofilter unit 140a after the hydrogen ion index is adjusted; An acidic water supply tank 150b for supplying acidic water from the second biofilter unit 140b of the biofilter unit 140 and supplying it to the second biofilter unit 140b after the hydrogen ion index is adjusted; The clean gas from which the malodorous component of the malodorous gas is removed from the biofilter unit 140 flows in and is upwardly passed through the polling layer 161. Chemical tax administration 160; And a chemical liquid supply tank 170 for supplying the chemical liquid from the chemical liquid washing unit 160 and supplying the chemical liquid to the chemical liquid washing unit 160 again.

In addition, receiving the hydrogen ion index, temperature, water level and differential pressure signal of the composite bio-deodorizer 100 and transmits a control signal according to the input set value to the operating device to improve the growth environment of the microorganisms of the carrier layer (141a, 141b) The controller 180 may further include an optimization.

The inlet 111 of the blower fan 110 is connected to the inlet pipe (L1), which is a passage that is introduced into the composite bio deodorizing apparatus 100 of the present invention is collected outside the odor gas and one end of the outlet 112 is wet It is connected to the other end of the malodorous gas inlet pipe L2 which is connected to the upper space of the polling layer 121 of the government 120 so that circulation is possible.

The wet cleaner 120 is a washing water injector 123 for injecting the washing water supplied from the washing water supply tank 130 to the upper portion, the washing water injector 123 is spaced apart below the odor gas inlet pipe ( It is installed at a lower position than the connecting portion of L2) under the polling layer 121 and the polling layer 121 through which the odor gas flowing from the blowing fan 110 and the washing water injected from the washing water injector 123 pass downward. And a rinsing water retention tank 124 in which the malodorous gas and the rinsing water which have passed through the polling layer 121 are retained.

The polling layer 121 is a structure in which a plurality of pall rings are stacked to a certain height, thereby improving the contact efficiency between the malodorous gas and the washing water, and the polling has chemical resistance among commercially available products. If the product is equipped with a product, it is not restricted to use.

One end of the inlet 132 of the washing water supply tank 130 is connected to the washing water retention tank 124 of the wet cleaning unit 120 so as to be circulated, and the washing water having the circulation valve V1 interposed therebetween. It is connected to the other end of the inlet pipe L3.

A pair of submersible pumps 131 are installed in the washing water supply tank 130, and one end of the discharging portion of the submersible pump 131 can be distributed with the washing water injector 123 of the wet cleaner 120. Is connected to the other end of the washing water supply pipe L4 with the shutoff valve V2 and the non-return valve V3 interposed therebetween.

In addition, the washing water supply tank 130 is provided with a temperature sensor 134 for detecting the temperature of the washing water, and a water level detector 135 for detecting the level of the washing water to control the signals detected by them. The heater 136 receives the signal of the controller 180 according to the signal of the temperature sensor 134 among the signals of the controller 180 to adjust the temperature of the washing water.

In addition, one end of the wall surface of the washing water supply tank 130 is connected to a water supply source (not shown) so as to be circulated, and the other end of the water supply pipe L5 having a shutoff valve V4 interposed therebetween. The float valve V5 connected is provided to automatically replenish water when the level of the washing water supply tank 130 is lowered.

In addition, one end of the washing water supply tank 130 is connected to a drain port (not shown) so as to be circulated to the lower side of the washing water supply tank 130, and the drain water automatic pipe V6 is interposed therebetween. When the outlet 137 connected to the other end is installed and the water level of the washing water supply tank 130 is increased or the quality of the washing water is deteriorated, the washing water is discharged to the drain according to the control signal of the controller 180. .

In addition, the other side of the wall surface of the washing water supply tank 130, the overflow outlet 138 is provided, one end of the overflow outlet 138 downstream of the automatic drain valve (V6) on the washing water discharge pipe (L6) It is connected to the other end of the overflow pipe (L7) that is circulated so as to be distributed to, and when the level of the washing water supply tank 130 is excessively high, the washing water is discharged to the drain through the overflow pipe (L7).

In addition, a drug input device 139 may be installed to inject the necessary drugs according to the composition of the odor gas introduced into the wet washing machine 120 and the microorganism state of the biofilter unit 140, which is a post-process as needed. have.

The biofilter unit 140 includes a first biofilter unit 140a and the first biofilter in which the odor gas is decomposed and removed by microorganisms while the acid component of the odor gas introduced from the wet cleaner 120 is neutralized. The second biofilter unit 140b is configured to decompose and remove the malodorous gas by the microorganism while neutralizing the alkali component of the malodorous gas introduced from the unit 140a.

The first biofilter unit 140a includes an alkali water retention tank 144a in which the odor gas introduced from the wet cleaner 120 and alkaline water injected through the alkaline water injector 143a remain, and the alkaline water retention tank ( A limestone layer 142a for removing ammonia and hydrogen sulfide of the malodorous gas introduced from the alkaline water retention tank 144a and the upper portion of the limestone layer 142a is installed in contact with the limestone layer 142a. Alkaline water injector which is spaced apart from the porous ceramic carrier layer 141a, which is a growth space for microorganisms to decompose and remove the odor gas passing through, and sprays alkaline water supplied from the alkaline water supply tank 150a. 143a is included.

The second biofilter unit 140b has an upper portion at one side of a wall surface connected to the upper portion of the wall surface of the first biofilter unit 140a so as to be distributed with each other, and an acidic water injector 143b for injecting acidic water thereon. Spaced below the acidic water injector (143b) and the porous ceramic carrier layer 141b, the porous ceramic carrier layer that is a growth space for microorganisms to decompose and remove the odor gas introduced from the first biofilter unit 140a ( 141b) is installed under the limestone layer 142b for removing ammonia and hydrogen sulfide remaining in the odor gas and the lower portion of the limestone layer 142b and passes through the porous ceramic carrier layer 141b and the limestone layer 142b. And the acidic water retention tank 144b in which the odor gas is purified and the acidic water injected through the acidic water injector 143b is retained.

The carrier embedded in the porous ceramic carrier layers 141a and 141b provides a space for microorganisms to grow, mainly silica (SiO ₂ ), alumina (Al ₂ O ₃ ), iron oxide (Fe ₂ O ₃ ), and the like. It consists of the components of

The alkaline water supply tank 150a is supplied with alkaline water from the alkaline water retention tank 144a of the first biofilter unit 140a through an alkaline water inlet pipe L8a, and is supplied with an alkaline water supply pipe L9a by an internal water pump. Through the circulating supply to the alkaline water injector 143a of the first biofilter unit 140a.

The acidic water supply tank 150b receives acidic water from the acidic water retention tank 144b of the second biofilter unit 140b through an acidic water inlet pipe L8b and supplies acidic water by an internal water pump. It is circulated and supplied to the acidic water injector 143b of the second biofilter unit 140b again through the pipe L9b.

The structure and operation relationship of the alkaline water supply tank 150a and the acidic water supply tank 150b are the same as those of the treated water supply tank 130 described above, but the hydrogen ion index (pH) of alkaline water or acidic water is detected. Hydrogen ion index detectors 151a and 151b may be added, and necessary chemicals, nutrients or microorganisms may be added according to the composition of the malodorous gas introduced into the biofilter unit 140 and the microorganisms of the carrier layers 141a and 141b. Injecting apparatus 152a, 152b is provided, the other structure and operation relationship is the same as the above-described washing water supply tank 130, and repeated description is omitted.

The chemical liquid washing unit 160 is a chemical liquid retention tank 164 in which the clean gas flowing from the acidic water retention tank 144b of the biofilter unit 140 and the chemical liquid injected through the chemical liquid injector 162 are retained. Located above the chemical retention tank 164, a polling layer 161 for removing acid and odorous components remaining in the clean gas flowing from the chemical retention tank 164, spaced apart on the polling layer 161, It includes a chemical liquid injector 162 for injecting the chemical liquid supplied from the chemical liquid supply tank 170 and the discharge pipe 163 installed in the upper portion of the chemical liquid injector 162 and discharges clean gas from which the odor component is removed to the outside.

In addition, the controller 180 detects a pressure drop in the wet cleaner 120, the biofilter unit 140, and the chemical liquid cleaner 160 between the discharge pipe 163 and the odor gas inlet pipe L2. The differential pressure gauge 165 is transmitted.

The chemical liquid supply tank 170 is introduced into the chemical liquid of the chemical liquid retention tank 164 of the chemical liquid washing unit 160 through the chemical liquid inlet pipe (L10), and through the chemical liquid supply pipe (L11) by an internal water pump The liquid is circulated and supplied to the chemical liquid injector 162 of the chemical liquid washing unit 160 again.

The structure and operation relationship of the chemical liquid supply tank 170 is the same as the washing water supply tank 130 described above, a hydrogen ion index sensor 171 for detecting the hydrogen ion index (pH) of the chemical liquid is added, In addition, a chemical injection device 172 is installed to inject necessary chemicals according to the composition of the clean gas flowing into the chemical liquid washing unit 160, the structure and operation of the other than the above-described cleaning water supply tank 130 ), So repeated descriptions are omitted.

The control unit 180 receives the detection signals transmitted from all the detectors of the composite bio-deodorizer 100 and displays them on the screen installed in the control unit 180 and transmits a control signal according to the input setting value to each operating device. By transmitting the composite bio deodorizer 100 to be automatically operated.

The composite bio deodorizer 100 of the present invention configured as described above may be operated as follows.

First, by analyzing the malodorous gas to be treated to select a microorganism suitable for the physical properties of the malodorous gas, and set the optimum operating temperature, humidity, hydrogen ion index and nutrients accordingly accordingly and inputs the set value to the controller 180.

Next, a signal sensed by the temperature sensor 134 and the water level detector 135 of the washing water supply tank 130 is transmitted to the controller 180, and the signal controlled according to the set value of the controller 180 is a heater ( 136) and the automatic drain valve V6 to adjust the temperature and level of the washing water in the washing water supply tank 130.

In addition, when the acidic or alkaline component of the odor gas introduced into the wet cleaner 120 is excessively high, alkaline chemicals such as sodium hydroxide (NaOH) or sodium hypochlorite (NaOCl) or sulfuric acid through the chemical input device 139. Or acidic chemicals such as hydrochloric acid need to be added to adjust the pH of the washing water.

Next, the signals detected by the hydrogen ion index detectors 151a and 151b, the temperature sensor, and the water level detector of the alkaline water supply tank 150a and the acidic water supply tank 150b are transmitted to the controller 180, and the controller 180 The controlled signal is transmitted to the heater and the automatic drainage valve to adjust the temperature and level of the alkaline water in the alkaline water supply tank 150a and the acidic water in the acidic water supply tank 150b.

In addition, the detected hydrogen ion index is displayed on the screen of the controller 180 and compared with the set value, and inputs the necessary chemicals. Hydrogen sulfide (H ₂ S), which is a sulfur-based odor component contained in the odor gas, is oxygen and Since sulfuric acid (H ₂ SO ₄ ) is reacted with water to become acidic, alkali chemicals such as sodium hydroxide or sodium hypochlorite are introduced into the alkaline water supply tank 150a through the input device 152a to supply hydrogen ion index. Adjust.

Alkaline water of the alkaline water supply tank 150a is pumped by an underwater pump and sprayed from the alkaline water injector 143a of the first biofilter unit 140a through the alkaline water supply pipe L9a, and then the ceramic carrier layer 141a and the limestone The layer 142a penetrates downward and is collected in the alkaline water retention tank 144a and then circulated back to the alkaline water supply tank 150a through the alkaline water inlet pipe L8a.

The operation of the acidic water supply tank 150b is also the same as that of the alkaline water supply tank 150a, but the ammonia (NH ₃ ) contained in the malodorous gas reacts with water to form ammonium hydroxide (NH ₄ OH), thereby becoming alkaline. Acidic chemicals such as sulfuric acid or hydrochloric acid are introduced into the acidic water supply tank 150b through the input device 152b to control the hydrogen ion index.

The acidic water of the acidic water supply tank 150b is pumped by the submersible pump and sprayed from the acidic water injector 143b of the second biofilter unit 140b through the acidic water supply pipe L9b and then the ceramic carrier layer ( 141b) and the limestone layer 142b penetrate downward and are collected in the acidic water retention tank 144b and then circulated back to the acidic water supply tank 150b through the acidic water inlet pipe L8b.

The microorganisms are introduced into the alkaline water supply tank 150a and the acidic water supply tank 150b through the input devices 152a and 152b to fix and grow the microorganisms in the porous ceramic carrier layers 141a and 141b. The microorganisms are attached to the carrier by being circulated through the carrier layers 141a and 141b, and replenishes as much as the amount of microorganisms lost during the operation of the composite bioodorizer 100.

When odor-causing substances and microorganisms that remove them are classified by type, organic compounds such as ammonia, acetaldehyde, methylamine, toluene, and styrene may be classified as Bacillus. subtilis , Bacillus circulans , Rhodopseudomonas palustri s, Nitrosomonas sp . , Nitrosospira sp . , Nitrobacter sp . , Nitrospira sp . Nitrogen compounds are decomposed and removed by removing microorganisms such as nitrogen and the like, and the microorganisms are generally maintained in active growth in the range of 5 to 50 ° C. and pH 6.0 to 8.0.

Moreover, sulfur compounds, such as hydrogen sulfide, methyl mercaptan, methyl sulfide, and methyl disulfide, are Thiobacillus sp . , Thiosphaera sp . , Thiomicrospira sp . , Thermothrix sp . It is decomposed and removed by a sulfur compound removing microorganism such as, the microorganisms can be classified as acidic bacteria that maintain active growth in the range of 5 ~ 42 ℃, pH 2.0 ~ 6.0.

Therefore, the nitrogen compound removing microorganism is introduced into the alkaline water supply tank 150a through a microorganism injector, and the sulfur compound removing microorganism is introduced into the acidic water supply tank 150b, and the temperature is increased by a heater to suit the growth environment of the microorganism. Adjust the pH with the chemicals added.

In addition, nutrients are supplied to the alkaline water supply tank 150a and the acidic water supply tank 150b through the input devices 152a and 152b in order to supply nutrients of the microorganisms fixed and grown to the porous ceramic carrier layers 141a and 141b. It can be put in.

Ammonium sulfate ((NH ₄ ) ₂ SO ₄ ), dibasic potassium phosphate (K ₂ HPO ₄ ), magnesium sulfate hexahydrate (MgSO ₄ · 7H ₂ O), sodium chloride (NaCl), Ferrous sulfate heptahydrate (FeSO ₄ · 7H ₂ O), calcium carbonate (CaCO ₃ ) and the like are preferred, and sulfur powder, dibasic potassium phosphate (K ₂ HPO ₄ ), monophosphate Potassium (KH ₂ PO ₄ ), magnesium chloride hexahydrate (MgCl ₂ · 7H ₂ O), ammonium chloride (NH ₄ Cl), ferrous sulfate hexahydrate (FeSO ₄ · 7H ₂ O), and the like are preferable.

Operation of the chemical storage tank 170 is also the same as the alkaline water supply tank 150a, but the clean gas introduced into the chemical liquid cleaning unit 160 may contain acidic water and microorganisms injected from the second biofilter unit 140b. Therefore, sodium hypochlorite (NaOCl) is introduced into the chemical storage tank 170 through the chemical input device 172.

The chemical liquid of the chemical storage tank 170 is pumped by the submersible pump and injected from the chemical liquid injector 162 of the chemical liquid washing unit 160 through the chemical liquid supply pipe L11, and then penetrates downward through the polling layer 161. Collected in the retention tank 164 and then circulated back to the chemical storage tank 170 through the chemical liquid inlet pipe (L10).

The drug, microorganisms or nutrients can be used both by manual input or automatic input device by the operator, it is a known technique that can be easily carried out by those skilled in the art having ordinary skill in the art, the present invention, Detailed illustration and description thereof will be omitted.

The malodorous gas introduced into the blowing fan 110 through the inflow pipe L1 is transferred to the polling layer 121 of the wet cleaner 120 through the malodorous gas inlet pipe L2 by the blowing fan 110. do.

The odor gas introduced into the wet cleaner 120 contacts the washing water sprayed through the washing water sprayer 123 in parallel while descending through the polling layer 121 and then into the washing water retention tank 124. The water-soluble malodorous component and particulate dust contained in the malodorous gas are trapped, removed, and cooled while in contact with the washing water.

The odor gas of the washing water retention tank 124 is introduced into the alkaline water retention tank 144a of the first biofilter unit 140a of the biofilter unit 140 so that the limestone layer 142a and the porous ceramic carrier layer 141a are provided. Ammonia and hydrogen sulfide in the malodorous gas are first trapped and removed from the limestone layer 142a during the ascension.

Hydrogen ion index and temperature in the alkaline water supply tank (150a) and alkaline water supplemented with nutrients and microorganisms are sprayed onto the porous ceramic carrier layer (141a) through the alkaline water injector (143a), while optimally controlling the growth environment of the microorganisms Contact with odor gas and countercurrent.

Hydrogen sulfide contained in the malodor gas reacts with oxygen and water to produce acidic sulfuric acid. The sulfuric acid is neutralized by reacting with alkaline chemicals such as sodium hydroxide or sodium hypochlorite contained in alkaline water, and ammonia contained in the malodor gas. The nitrogen component of is decomposed and removed by the nitrogen compound removing microorganism growing in the porous ceramic carrier layer 141a.

The malodorous gas from which the first malodorous component has been removed from the first biofilter unit 140a is introduced into the upper portion of the second biofilter unit 140b and descends through the porous ceramic carrier layer 141b and the limestone layer 142b. Hydrogen ion index and temperature in the acidic water supply tank 150b and acidic water supplemented with nutrients and microorganisms are sprayed onto the porous ceramic carrier layer 141b through the acidic water injector 143b to improve the growth environment of the microorganisms. Contact with odor gas in parallel with optimal control.

The ammonia contained in the malodorous gas reacts with water to produce alkaline ammonium hydroxide. The ammonium hydroxide is neutralized by reacting with acidic chemicals such as sulfuric acid or hydrochloric acid contained in the acidic water, and the sulfur compound contained in the malodorous gas is porous ceramic. The sulfur compound removing microorganisms growing in the carrier layer 141b are decomposed and removed, and ammonia and hydrogen sulfide remaining in the odor gas are collected and removed in the limestone layer 142b.

As described above, while the malodorous gas ascends the first biofilter unit 140a of the biofilter unit 140, the hydrogen sulfide component, which is a malodorous gas component that is heavier than air, reacts with water of oxygen and alkaline water to be converted into sulfuric acid that is heavier than water. , The sulfuric acid is neutralized by reaction with alkaline chemicals of alkaline water.

That is, hydrogen sulfide and sulfuric acid, which are heavy components of the malodorous gas, have a property of descending, and since the malodorous gas has an upward flow in the first biofilter unit 140a, the descending force and the rise of the malodorous gas by the weight of the hydrogen sulfide and sulfuric acid are increased. As the flows collide with each other, hydrogen sulfide and sulfuric acid stay in the limestone layer 142a and the porous ceramic carrier layer 141a of the first biofilter unit 140a for a long time.

On the other hand, the odorous gas from which hydrogen sulfide and sulfuric acid, which are heavy components of the odorous gas, are removed is lighter and exhibits a property to rise, so that the gas flows through the first biofilter unit 140a for a short time.

Therefore, the hydrogen sulfide and sulfuric acid of the malodorous gas stays for a long time while the malodorous gas passes through the first biofilter unit 140a to be in sufficient contact with the alkaline water, and the remaining malodorous gas passes for a short time, so the first biofilter unit 140a has a large scale. Compared with this, the processing efficiency is increased.

Further, while the malodorous gas descends the second biofilter unit 140b of the biofilter unit 140, the ammonia component, which is a malodorous gas component that is lighter than air, reacts with water of acidic water and is converted into ammonium hydroxide which is lighter than water. The ammonium hydroxide is neutralized by reaction with acidic chemicals of acidic water.

In other words, ammonia and ammonium hydroxide, which are light components of the odor gas, have a property to rise, and since the odor gas has a falling flow in the second biofilter unit 140b, the rising force of the ammonia and ammonium hydroxide and the falling flow of the odor gas are When the ammonia and ammonium hydroxide collide with each other, they stay in the porous ceramic carrier layer 141b and the limestone layer 142b of the second biofilter unit 140b for a long time.

On the other hand, the water produced by the neutralization reaction of the ammonium hydroxide with acidic water and the odorous gas from which the light components of ammonia and ammonium hydroxide are removed have a property to descend, so that the second biofilter unit 140b with the falling flow of the odorous gas. Passed in a short time.

Therefore, while the malodorous gas passes through the second biofilter unit 140b, the ammonia and ammonium hydroxide of the malodorous gas stay for a long time to be in sufficient contact with the acidic water, and the remaining components pass for a short time. The processing efficiency is increased compared to the scale.

In addition, the malodorous gas may vary greatly in the composition of the malodorous components depending on the source of the odor gas, which may cause a chemical impact on the microorganisms growing in the first biofilter unit 140a and the second biofilter unit 140b. There is a possibility to add.

In order to prevent this, in the present invention, before the odor gas passes through the porous ceramic carrier layer 141a of the first biofilter unit 140a, the water-soluble odor component and particulate dust are removed from the wet cleaner 120 and the limestone layer ( 142a) to remove some of the ammonia and hydrogen sulfide, and odor introduced into the upper portion of the second biofilter portion 140b by spraying acidic water on the porous ceramic carrier layer 141b of the second biofilter portion 140b. The composition of the gas was made to meet the growth conditions of the acidic bacteria grown in the carrier layer 141b.

The clean gas from which the malodorous component is removed from the malodorous gas while passing through the biofilter unit 140 passes through the acidic water retention tank 144b of the second biofilter unit 140b and the chemical liquid retention tank of the chemical liquid washing unit 160. After being introduced into 164, the chemical liquid injector 162 is counter-currently injected into the polling layer 161 while passing upwardly through the polling layer 161 of the chemical liquid cleaner 160.

The clean gas may contain acidic water scattered from the second biofilter unit 140b and some of the microorganisms of the porous ceramic carrier layers 141a and 141b in the clean gas to contain an odorous component by the microorganisms. It is neutralized and deodorized by sodium hypochlorite contained in the chemical solution and then released into the atmosphere.

As described above, the bio-deodorizing device 100 of the present invention comprises a bio-deodorizing unit comprising a physical deodorization of the wet cleaning unit 120, a first bio-filter unit 140a, and a second bio-filter unit 140b. Process through a three-sequential process consisting of biological deodorization of the 140 and chemical deodorization of the chemical liquid washing unit 160, the wet cleaning unit 120, the first biofilter unit 140a, the second biofilter Since the washing water, the alkaline water, the acidic water, and the chemical liquid sprayed to the unit 140b and the chemical liquid washing unit 160 are supplied and circulated from a separate supply device, the composite bio deodorizing apparatus 100 is adjusted by adjusting the composition according to the components of the malodorous gas. Precise operation is possible.

When the differential pressure of the differential pressure gauge 165 installed between the discharge pipe 163 and the malodorous gas inlet pipe L2 increases, the flow rate of the malodorous gas introduced through the blower fan 110 is reduced or the blower fan 110 is removed. When temporary stop and excessive differential pressure is continued, the operation of the composite bio deodorizer 100 is stopped and the internal inspection is performed to promote safe operation of the composite bio deodorizer 100.

The composite biodeodorization apparatus 100 of the present invention configured as described above distinguishes the malodorous gas from the alkaline malodorous acid and the acidic malodor, and in the upstream (first biofilter unit) and the downstream (second biofilter unit) flow section of the malodorous gas. Since it neutralizes and removes efficiently according to the physical properties of the odor component, it is possible to remove acid odor and alkaline odor components more efficiently than the scale of the composite biodeodorizer 100, and at the same time to remove the acid and alkali components, porous ceramic carrier By optimizing the chemical growth environment of the microorganisms growing in the layers (141a, 141b), the activity of the microorganisms is maintained at the best and the survival rate is increased, thereby improving the removal efficiency of odor gas and reducing the replenishment of microorganisms, thereby reducing operating costs.

100: biofilter type deodorizer, 110: blower fan, 111: inlet, 112: outlet, 120: wet washing machine, 121: polling layer, 123: washing water injector, 124: washing water retention tank, 130: washing water supply Tank, 131: submersible pump, 132: inlet, 134: temperature sensor, 135: water level sensor, 136: heater, 137: outlet, 138: overflow outlet, 139: chemical injection device, 140: biofilter, 140a: first Biofilter section, 140b: second biofilter section, 141a / 141b: porous ceramic carrier layer, 142a / 142b: limestone layer, 143a: alkaline water sprayer, 143b: acidic water sprayer, 144a: alkaline water retention tank, 144b: acidic water retention Tank, 150a: alkaline water supply tank, 150b: acidic water supply tank, 151a / 151b: hydrogen ion index detector, 152a / 152b: injection device, 160: chemical cleaning unit, 161: polling layer, 162: chemical sprayer, 163: discharge pipe 164: chemical retention tank, 165: differential pressure gauge, 170: chemical supply tank, 171: hydrogen ion index detector, 172: chemical injection device, 180: controller,
L1: inlet pipe, L2: odor gas inlet pipe, L3: clean water inlet pipe, L4: clean water supply pipe, L5: water supply pipe, L6: clean water discharge pipe, L7: overflow pipe, L8a: alkaline water inlet pipe, L8b: acid water inlet pipe, L9a: alkaline water supply line, L9b: acidic water supply line, L10: chemical inlet line, L11: chemical solution line,
V1: Circulation valve, V2: Shut-off valve, V3: Check valve, V4: Shut-off valve, V5: Float valve, V6: Drainage automatic valve

Claims (8)

A blowing fan 110 that blows odor gas and blows it into the apparatus;
Wet cleaner 120 through which the odor gas flows from the blowing fan 110 and passes through the polling layer 121 in a downward flow;
A washing water supply tank 130 which circulates and supplies the washing water introduced from the wet washing unit 120 to the wet washing unit 120 again;
The first biofilter unit 140a and the first passage through which the odor gas flows from the wet cleaning unit 120 and passes through the limestone layer 142a and the porous ceramic carrier layer 141a fixed and grown by the microorganisms in an upward flow. Biofilter composed of the second biofilter unit 140b passing through the porous ceramic carrier layer 141b and the limestone layer 142b in which the odor gas flows from the biofilter unit 140a and the microorganisms are fixed and grown. Unit 140;
An alkaline water supply tank 150a into which an alkaline chemical is introduced and the alkaline water whose hydrogen ion index is adjusted is circulated and supplied to the first biofilter unit 140a;
An acidic water supply tank 150b into which an acidic chemical is introduced and acidic water whose hydrogen ion index is controlled is circulated and supplied to the second biofilter unit 140b;
A chemical liquid cleaner 160 in which the clean gas from which the malodorous component of the malodorous gas has been removed is introduced from the biofilter unit 140, passes through the polling layer 161 upward, and is discharged into the atmosphere; And
And a chemical liquid supply tank (170) for circulating and supplying the chemical liquid introduced from the chemical liquid washing unit (160) to the chemical liquid washing unit (160). The method according to claim 1,
The composite bio deodorizing apparatus 100 receives a detected signal and transmits a control signal according to the input set value to an operating device to control the controller 180 to optimize the growth environment of the microorganisms of the carrier layers 141a and 141b. Characterized in that, composite bio deodorizing apparatus for processing malodorous gas (100). The method of claim 1,
The wet cleaner 120 includes a washing water injector 123 for spraying washing water on an upper portion thereof, a polling layer 121 disposed below the washing water injector 123, and a washing disposed under the polling layer 121. Composite bio deodorizing apparatus for processing malodorous gas, characterized in that consisting of a water retention tank (124). The method of claim 1,
The first biofilter unit 140a includes an alkali water retention tank 144a in which the odor gas introduced from the wet cleaner 120 and alkaline water injected through the alkaline water injector 143a remain, and the alkaline water retention tank ( 144a) the limestone layer 142a disposed on the upper portion, the porous ceramic carrier layer 141a which is installed in contact with the limestone layer 142a, and is spaced apart from the porous ceramic carrier layer 141a, and is alkaline water. Composite bio deodorizing apparatus for processing malodorous gas, characterized in that consisting of an alkaline water injector (143a) for spraying. The method of claim 1,
The second biofilter unit 140b has an upper portion at one side of a wall surface connected to the upper portion of the wall surface of the first biofilter unit 140a so as to be distributed with each other, and an acidic water injector 143b for injecting acidic water thereon. The porous ceramic carrier layer 141b spaced apart from the acidic water injector 143b and being a growth space of microorganisms, the limestone layer 142b and the limestone layer 142b which are installed in contact with the porous ceramic carrier layer 141b. Compound biodeodorizing apparatus for processing malodorous gas, characterized in that consisting of acidic water retention tank (144b) located in the lower portion. The method of claim 1,
The chemical liquid washing unit 160 is a chemical liquid retention tank 164 in which the clean gas flowing from the biofilter unit 140 and the chemical liquid injected through the chemical liquid injector 162 stay on the chemical liquid retention tank 164. The pollutant layer 161 is located, the pollutant layer 161 is spaced apart and provided with a chemical liquid injector 162 for injecting the chemical liquid and the discharge pipe 163 installed on the chemical liquid injector 162, odor Composite bio deodorizer 100 for processing gas. The method of claim 1,
The microorganisms fixed and grown on the porous ceramic carrier layer 141a of the first biofilter unit 140a include Bacillus subtilis , Bacillus circulans , Rhodopseudomonas palustri s, Nitrosomonas sp. , Nitrosospira sp. , Nitrobacter sp. And Nitrospira sp. At least one microorganism selected from the group consisting of
The microorganism fixed and grown on the porous ceramic carrier layer 141b of the second biofilter unit 140b is Thiobacillus sp. , Thiosphaera sp., Thiomicrospira sp. And Thermothrix sp. At least one microorganism selected from the group consisting of, characterized in that the deodorizing device for processing a composite biodeodorant 100. delete

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