CN1752034A - Boitrickling filter deodourization system of sewage chemical off odour and its deodour method - Google Patents

Abstract

Sewage and chemical odor biological trickling deodorization system and deodorization method thereof, it relates to sewage and chemical odor biological deodorization system and its method, solves the problem of uneven water distribution and biofilm caused by the large volume of the existing biological trickling deodorization device Accumulation, stuffing clogging and low processing efficiency. The system includes an upper reactor 1, a lower reactor 2, and a spray tank 21. An isolation layer 3 is arranged above and below the upper reactor 1 and the lower reactor 2. Filling materials 5 are respectively placed in the upper reactor 1 and the lower reactor 2. , the water circulation device B is provided with two showers 14, the U-shaped drain pipe 8 of the water circulation device B is connected with the gas input and discharge device C, and communicated with the gas input and discharge device C, the bottom of the gas input and discharge device C An emptying pipe 9 is provided. The method: A. cultivating activated sludge; B. hanging mold; C. starting the system; D. adding circulating liquid. The system of the invention has simple structure, small volume and low cost, and the method of the invention has high processing efficiency.

Description

Sewage and chemical odor biological trickling deodorization system and deodorization method

Technical field:

The invention relates to a biological treatment system and method for sewage and chemical odor.

Background technique:

At present, the main methods of controlling malodorous gas are physical method, chemical method and biological method. Physicochemical methods are effective in deodorization and odor control, and have the advantages of short reaction time and large processing capacity, but there are problems such as numerous equipment, complicated process, difficult regeneration of secondary pollution, complicated post-treatment process, and high energy consumption. Therefore, since the 1950s, foreign countries have devoted themselves to using biological oxidation methods to deal with odorous substances. The biological method uses microorganisms to decompose odorous substances, which requires simple equipment, low energy consumption, and convenient management and maintenance. It has become an important development direction for odor control and has broad development prospects. The deodorization of sewage treated by biological trickling filter is a kind of biological deodorization process, and it is also a relatively advanced sewage and chemical odor treatment process at present. It has the advantages of simple structure, high removal efficiency, and easy control of process conditions. This process method is currently in the research and test stage in my country. In the actual application process, the uneven water distribution is often caused by the large device, and the biofilm accumulation causes the device to be blocked, resulting in low treatment efficiency and difficult operation and management.

Invention content:

In order to solve the problems of uneven water distribution caused by the large volume of the device for treating odor in the existing biological trickling filter tower, the blockage of the device filler caused by biofilm accumulation, and the low treatment efficiency, the present invention provides a sewage and chemical odor biological drop filter. Filtration deodorization system and deodorization method thereof, the specific technical scheme to solve this problem is as follows:

The system of the present invention is composed of a biological trickling deodorization reaction device A, a water circulation device B, a gas input and discharge device C, and a gas output device D. The lower end of the biological trickle filtration deodorization reaction device A is connected to the upper end of the gas input and discharge device C, The upper end of the biological trickling filtration deodorization reaction device A is connected to the lower end of the gas output device D, the upper end of the water circulation device B is connected to the inside of the gas output device D, and the middle part of the water circulation device B is connected to the middle part of the biological trickling filtration deodorization reaction device A , the lower end of the water circulation device B communicates with the middle part of the gas input and discharge device C. The bio-trickling deodorization reaction device A includes an upper reactor 1, a lower reactor 2, and a spray barrel 21. An upper isolation layer 3-1 is provided at the connection between the upper reactor 1 and the gas output device D, and the upper reactor 1 is provided with a first middle isolation layer 3-2 at the junction of the spray barrel 21, and a second middle isolation layer 3-3 is arranged at the junction of the spray barrel 21 and the lower reactor 2, and the lower reactor 2 and the gas The connection of the input and discharge device C is provided with a lower isolation layer 3-4, the upper reactor 1 and the lower reactor 2 are respectively equipped with fillers 5, and the upper sprayer 14-1 of the water circulation device B is arranged in the gas output device D. In the lower part of the gas collector 6, the top end of the gas collector 6 of the gas output device D is provided with a second exhaust hole 7-2. The lower sprayer 14-2 of the water circulation device B is arranged in the spray tank 21 of the biological trickling filtration deodorization reaction device A. The U-shaped drain pipe 8 of the water circulation device B is connected to the middle part of the pipe wall 15-3 of the gas input and discharge device C, and communicates with the gas input and discharge device C, and the bottom of the gas input and discharge device C is provided with an emptying pipe 9.

The method for biological trickling filtration deodorization of the present invention comprises the following steps:

A. Cultivate activated sludge, mix the sludge with septic tanks and sewer mixture for cultivation, and cultivate until the VSS/SS is above 0.68;

B. Put the activated sludge obtained in step A into upper reactor 1 and lower reactor 2 for soaking and inoculation, and empty it every day, refill it into upper reactor 1 and lower reactor 2 after aeration, and After two days, the air is introduced and the circulating fluid is sprayed. After two weeks, there is a thin layer of biofilm on the surface of the filler 5, and the film formation period is 18 to 22 days to complete;

C. Start the biological trickling deodorization system, keep the H ₂ S concentration at the inlet of the intake pipe 10 at 250-1700 mg/m ³ , that is, keep the volume load at 13-90 g/m ³ ·h, and control the spray volume of the circulating fluid at 10-100 mg/m 3 . 60L/s, the gas flow rate is 100-400L/s, the gas residence time is controlled at 20-70 seconds, the pH is controlled between 2-7; the temperature is controlled between 15-300°C;

D. The cycle of adding circulating fluid is 9 to 15 days.

The system of the invention is simple in structure, small in size and low in cost; the method of the invention has high deodorization efficiency and simple process, is suitable for treating odors in small and medium-sized sewage plants and high-concentration odors in chemical industries, and is easy to popularize and apply.

Description of drawings:

Fig. 1 is a diagram of the overall structure of the biological trickling deodorization system, Fig. 2 is a schematic diagram of the structure of the filler 5, Fig. 3 is a plan view of the isolation layer 3, Fig. 4 is a diagram of the treatment effect of hydrogen sulfide in the start-up period, and Fig. 5 is a diagram of the hydrogen sulfide treatment at different concentrations Figure 6 is the removal rate diagram of hydrogen sulfide under different loads, Figure 7 is a comparison chart of H ₂ S removal rate under different gas flow rates, and Figure 8 is the outlet of vent hole 7-2 under different gas residence times The gas concentration diagram of H ₂ S, Fig. 9 is the effect diagram of H ₂ S removal under different gas residence time, Fig. 10 is the comparison diagram of H ₂ S removal effect under different liquid spraying amount, Fig. 11 is the addition of heterotrophic, autotrophic The comparison chart of system removal of H ₂ S before and after raising deodorizing bacteria.

Detailed ways:

Specific embodiment one: the deodorization system of this embodiment is made up of biological dripping filtration deodorization reaction device A, water circulation device B, gas input and discharge device C, gas output device D, the lower end of biological trickle filtration deodorization reaction device A and gas input It is connected with the upper end of the discharge device C, the upper end of the biological trickling filter deodorization reaction device A is connected with the lower end of the gas output device D, the upper end of the water circulation device B is connected with the inside of the gas output device D, and the middle part of the water circulation device B is connected with the biological trickling filter. The middle part of the deodorization reaction device A is connected, and the lower end of the water circulation device B is connected with the middle part of the gas input and discharge device C. The bio-trickling deodorization reaction device A includes an upper reactor 1, a lower reactor 2, and a spray barrel 21. An upper isolation layer 3-1 is provided at the connection between the upper reactor 1 and the gas output device D, and the upper reactor 1 is provided with a first middle isolation layer 3-2 at the junction of the spray barrel 21, and a second middle isolation layer 3-3 is arranged at the junction of the spray barrel 21 and the lower reactor 2, and the lower reactor 2 and the gas The connection of the input and discharge device C is provided with a lower isolation layer 3-4, the upper reactor 1 and the lower reactor 2 are respectively equipped with fillers 5, and the upper sprayer 14-1 of the water circulation device B is arranged in the gas output device D. In the lower part of the gas collector 6, the top end of the gas collector 6 of the gas output device D is provided with a second exhaust hole 7-2. The lower sprayer 14-2 of the water circulation device B is arranged in the spray tank 21 of the biological trickling filtration deodorization reaction device A. The U-shaped drain pipe 8 of the water circulation device B is connected to the middle part of the pipe wall 15-3 of the gas input and discharge device C, and communicated with the gas input and discharge device C, and the bottom of the gas input and discharge device C is provided with an emptying pipe 9.

Specific embodiment two: the biological trickle filtration deodorization reaction device A of the present embodiment is made up of upper reactor 1, lower reactor 2, spray tank 21, isolation layer 3, filler 5, pipe wall 15-2, sampling port 16, The upper reactor 1 has a built-in filler 5, which is made of glass fiber reinforced plastic with a cross-flow structure, each piece is 30-40mm long, 10-15mm wide, and 0.4-0.8mm thick. The specific surface area of the filler is 225m ² /m ³ , and the surface of the filler 5 is rough , easy to hang film, large specific surface area, can avoid short flow and blockage, the layer height of packing 5 is 600 ~ 1200mm, the upper part of the upper reactor 1 is connected with the lower part of the tube wall 15-1 of the gas collector 6, and the upper reaction An upper isolation layer 3-1 is fixed in the middle of the connection between the device 1 and the gas collector 6, and the upper reactor 1 and the lower reactor 2 are connected by a spray bucket 21, and the bottom of the upper reactor 1 and the bottom of the spray bucket 21 The upper part of the pipe wall 15-2 is connected, and the first middle isolation layer 3-2 is fixed in the middle of the connection between the upper reactor 1 and the spray barrel 21, and the lower part of the pipe wall 15-2 of the spray barrel 21 is connected to the lower reactor 2. The upper part of the upper connection of the spray tank 21 and the lower reactor 2 is fixed in the middle of the second middle isolation layer 3-3, and the lower part of the lower reactor 2 is connected with the upper part of the pipe wall 15-3 of the gas input and discharge system C , a lower isolation layer 3-4 is fixed in the middle of the connection between the lower reactor 2 and the gas input and discharge device C, and an upper sampling port 16-1 is installed on the tube wall 15-4 of the upper reactor 1, and in the lower reactor 2 The lower sampling port 16-2 is installed on the pipe wall 15-5. Other components and connections are the same as those in Embodiment 1.

Specific embodiment three: the water circulation device B of this embodiment is composed of an upper shower 14-1, a lower shower 14-2, a U-shaped drain pipe 8, a water tank 17, a circulating pump 18, a gate valve 19, and a flow meter 20. On the pipe wall 15-3 of the gas input and discharge system C, there is a hole connected to one end of the U-shaped drain pipe 8, the other end of the U-shaped drain pipe 8 is connected to the input end of the circulating water tank 17, and the output of the circulating water tank 17 The end is connected to the input end of the circulation pump 18, the output end of the circulation pump 18 is connected to one end of the gate valve 19, the other end of the gate valve 19 is connected to the input end of the flowmeter 20, the output end of the flowmeter 20 is connected to one end of the water pipe 13, The other end of the water pipe 13 is connected with the inlets of the upper shower 14-1 and the lower shower 14-2. The other components and connections are the same as those in Embodiments 1 and 2.

Specific embodiment four: the gas input and discharge device C of the present embodiment is made up of intake pipe 10, first exhaust hole 7-1, gas sampling port 11, emptying pipe 9, and one end of intake pipe 10 is fixed on the gas input and discharge Outside the pipe wall 15-3 of the device C, a sampling port 11 is provided on the gas inlet pipe 10 outside the pipe wall 15-3 of the gas input and discharge device C, and the other end of the gas inlet pipe 10 passes through the pipe wall 15-3 and is fixed on the At the top of the water level in the sedimentation zone 4 of the gas input and discharge device C, the inlet pipe 10 inside the pipe wall 15-3 is provided with a first exhaust hole 7-1, and the cross section of the first exhaust hole 7-1 is ten. Shaped, so that the gas evenly enters the biological trickling filtration deodorization reaction device A, and the bottom of the precipitation area 4 of the gas input and discharge device C is installed with an emptying pipe 9 . Other compositions and connections are the same as those of Embodiments 1, 2, and 3.

Specific embodiment five: the gas output device D of the present embodiment is made up of gas collector 6, the second exhaust hole 7-2, and the second exhaust hole 7-2 is connected on the upper top end of gas collector 6, will pass through The gas after the lower reactor 2 and the upper reactor 1 are quiet is collected and discharged from the second exhaust hole 7-2. Other compositions and connections are the same as those of Embodiments 1, 2, 3 and 4.

Specific embodiment six: the method of this embodiment comprises the following steps:

A. Cultivate activated sludge, mix the sludge with septic tanks and sewer mixture for cultivation, and cultivate until the VSS/SS is above 0.68;

B. Put the activated sludge obtained in step A into upper reactor 1 and lower reactor 2 for soaking and inoculation, and empty it every day, refill it into upper reactor 1 and lower reactor 2 after aeration, and After the day, air is introduced and the circulating fluid is sprayed. The circulating fluid consists of glucose 0.08-0.12g/L, peptone 0.5-1.0g/L, dipotassium hydrogen phosphate (K ₂ HPO ₄ ) 0.55-0.65g/L, diphosphate Potassium Hydrogen (KH ₂ PO ₄ ) 0.55～0.65g/L, Magnesium Chloride (MgCl ₂ 6H ₂ O) 0.08～0.12g/L, NH ₄ Cl 0.18-～0.22g/L, Ferrous Sulfate (FeSO ₄ 7H ₂ O) 0.015～0.03g/L, magnesium sulfate (MgSO ₄ 5H ₂ O) 0.015-～0.03g/L, and the balance is water (H ₂ O) (water can be effluent treated by sewage plant or chemical plant wastewater )composition. Add the prepared circulating liquid into the circulating water tank 17, and inject it into the water pipe 13 from the circulating water pump 18 through the upper sprayer 14-1 and the lower sprayer 14-2 respectively to the upper reactor 1, the spray barrel 21 and the lower reactor 2 Spray on the filler 5 on the top, the circulating liquid flows into the sedimentation area 4 from top to bottom through the filler layer, and then enters the circulating water tank 17 through the U-shaped drain pipe 8 for circulation. After two weeks, a thin layer of biological material grows on the surface of the filler 5 Membrane, the film-hanging period is 18-22 days to complete;

C. Start the biological dripping deodorization system. The total volume of the system is 9.2L, and the effective volume is 7.6L. When the H ₂ S concentration at the inlet of the inlet pipe 10 is 250-300mg/m ³ , the volume load is maintained at 13.16-15.79g/m ³ In the lower range of h, the control liquid spray volume is 10L/s, and the gas flow rate is 400L/s, which is discharged from the first exhaust hole 7-1, and is connected with the lower reactor 2 and the upper reactor during the upward flow process. The biofilm formed on the filler 5 in the reactor 1 (the layer height of the filler 5 is 600mm, and the layer height of the filler 5 is adjusted according to the concentration of H ₂ S) is purified after being contacted, and the purified gas enters the gas collector 6 and then Discharged through the second exhaust hole 7-2, the system had a high removal rate of 97.22% for H ₂ S on the first day of starting, and dropped to the lowest 80.14% after 4 days, and then gradually increased, and after 4 days, the second exhaust The concentration of H ₂ S gas at the outlet of hole 7-2 reaches 0, and the removal rate reaches 100% (as shown in Fig. 4 ), and then tends to be stable. When the inlet H ₂ S concentration of the inlet pipe 10 was 250-300mg/m ³ , the residence time of the gas was between 40-50 seconds (as shown in Figure 8 and Figure 9), and the pH was controlled between 2-7 (pH is An important parameter for dealing with odors such as ammonia and hydrogen sulfide. In order to maintain a high removal rate, it is determined that when treating hydrogen sulfide odor alone, the pH is controlled between 2 and 7; when removing ammonia and hydrogen sulfide odor, the pH It is ideal to control between 6 and 7), and the temperature is controlled in the range of 15 to 30°C (temperature is an important ecological factor for the growth and development of microorganisms, which will affect the growth, reproduction, metabolism and other physiological and biochemical processes of individual microorganisms. greater influence), the ammonia and hydrogen sulfide odor removal effect is the most ideal, and the removal rate is 100% of the standard. The biofilm on the filler 5 in the upper reactor 1 and the lower reactor 2 is partially shed by the repeated washing of the circulating liquid and part of the circulating liquid that has not been discharged enters the precipitation area 4, and the liquid level is controlled at a certain height by the U-shaped drain pipe 8 , when the part of the biofilm that has been washed off and the part of the circulating fluid that has not been discharged accumulate to a certain amount, the emptying pipe 9 is opened to discharge it;

D. After repeated drip filtration, the concentration of COD in the circulating fluid decreases, and the circulating fluid needs to be added, and the cycle is 9 to 15 days.

Embodiment 7: The difference between this embodiment and Embodiment 6 is: the concentration of H ₂ S at the inlet of the inlet pipe 10 is gradually increased from 252.0 mg/m ³ to 1655.0 mg/m ³ , and the steady liquid spray volume is 10 L/s , the constant gas flow rate is 400L/s (as shown in Figure 7), that is, the volume load of the reactor is increased to 87.1g/m ³ ·h (the layer height of the filler 5 in the upper reactor 1 and the lower reactor 2 is 1200mm), as shown in Figure 5 is the removal rate diagram of hydrogen sulfide under different concentrations, and Figure 6 is the removal rate diagram of hydrogen sulfide under different loads. According to the national standard, the maximum allowable concentration in the workshop should not exceed 10.0mg/m ³ . In this case, the volume load should be controlled below 68.2g/m ³ ·h (the H ₂ S concentration at the inlet of the inlet pipe 10 is 1295.0mg/m ³ ). At this time, the outlet H ₂ S concentration is 11.0 mg/m ³ , and the removal rate is 99.2%. Other steps and parameters in this manner are the same as those in Embodiment 6.

Embodiment 8: The difference between this embodiment and Embodiment 7 is that autotrophic or heterotrophic deodorizing bacteria are added to the upper reactor 1 and the lower reactor 2, and the concentration of H ₂ S at the inlet of the air inlet pipe 10 is 1550.0 mg /m ³ , gas flow rate 400L/s, and circulating fluid spray volume 10L/s, the removal rate increased from 92.90% to 99.42%, and the removal rate increased by nearly 8% after adding autotrophic or heterotrophic deodorizing bacteria ( See Figure 11). Other steps and parameters in this manner are the same as those in Embodiment 6.

Claims (10)

1, sewage, the chemical industry bad smell biological drips filter deodorization system, it is by bio-trickling deodorization reaction unit (A), water circle device (B), gas input and discharge equipment (C), gas output device (D) is formed, the lower end of bio-trickling deodorization reaction unit (A) links to each other with the upper end of gas input and discharge equipment (C), the upper end of bio-trickling deodorization reaction unit (A) links to each other with the lower end of gas output device (D), the upper end of water circle device (B) is connected with the inside of gas output device (D), the middle part of water circle device (B) is connected with the middle part of bio-trickling deodorization reaction unit (A), the lower end of water circle device (B) is connected with the middle part of gas input and discharge equipment (C), it is characterized in that bio-trickling deodorization reaction unit (A) includes reactor (1), following reactor (2), spray bucket (21), junction at last reactor (1) and gas output device (D) is provided with sealing coat (3-1), be provided with septum primum absciss layer (3-2) in last reactor (1) and the junction that sprays bucket (21), junction at spray bucket (21) and following reactor (2) is provided with septum secundum absciss layer (3-3), sealing coat (3-4) under the junction of input of reactor (2) and gas and discharge equipment (C) is provided with down, last reactor (1), put filler (5) in the following reactor (2) respectively, the last spray thrower (14-1) of water circle device (B) is arranged in the bottom of gas trap (6) of gas output device (D), the top of the gas trap (6) of gas output device (D) is provided with second venting hole (7-2), the following spray thrower (14-2) of water circle device (B) is arranged in the spray bucket (21) of bio-trickling deodorization reaction unit (A), the U-shaped water shoot (8) of water circle device (B) is connected with the middle part of the tube wall (15-3) of gas input and discharge equipment (C), and be connected with gas input and discharge equipment (C), the bottom of gas input and discharge equipment (C) is provided with evacuated tube (9).

2, sewage according to claim 1, chemical industry bad smell biological drip filter deodorization system, it is characterized in that filler (5) makes the cross-stream structure by glass reinforced plastic.

3, sewage according to claim 1, the chemical industry bad smell biological drips filter deodorization system, it is characterized in that bio-trickling deodorization reaction unit (A) is by last reactor (1), following reactor (2), spray bucket (21), sealing coat (3), filler (5), thief hole (16) is formed, the top of last reactor (1) is connected with the bottom of the tube wall (15-1) of gas trap (6), last reactor (1) has last sealing coat (3-1) with the junction center fixed of gas trap (6), be connected by spray bucket (21) between last reactor (1) and the following reactor (2), the bottom of last reactor (1) is connected with the top of the tube wall (15-2) of spray bucket (21), last reactor (1) has septum primum absciss layer (3-2) with the junction center fixed of spray bucket (21), the bottom of the tube wall (15-2) of spray bucket (21) is connected with the top of following reactor (2), spray bucket (21) has septum secundum absciss layer (3-3) with the junction center fixed of following reactor (2), the bottom of following reactor (2) is connected with the top of the tube wall (15-3) of gas input and blowdown system (C), following reactor (2) has following sealing coat (3-4) with the junction center fixed of gas input and discharge equipment (C), on the tube wall (15-4) of last reactor (1), thief hole (16-1) is installed, thief hole (16-2) down is installed on the tube wall (15-5) of following reactor (2).

4, sewage according to claim 1, the chemical industry bad smell biological drips filter deodorization system, it is characterized in that water circle device (B) is by last spray thrower (14-1), following spray thrower (14-2), U-shaped water shoot (8), water tank (17), recycle pump (18), gate valve (19), under meter (20) is formed, on the tube wall (15-3) of gas input and blowdown system (C), have the hole that is connected with an end of U-shaped water shoot (8), the other end of U-shaped water shoot (8) is connected with the input terminus of cyclic water tank (17), the output terminal of cyclic water tank (17) is connected with the input terminus of recycle pump (18), the output terminal of recycle pump (18) is connected with an end of gate valve (19), the other end of gate valve (19) is connected with the input terminus of under meter (20), the output terminal of under meter (20) is connected with an end of water pipe (13), the other end of water pipe (13) and last spray thrower (14-1), the inlet end of following spray thrower (14-2) connects.

5, sewage according to claim 1, the chemical industry bad smell biological drips filter deodorization system, it is characterized in that gas input and discharge equipment (C) are by inlet pipe (10), first venting hole (7-1), gas sampling mouth (11), evacuated tube (9) is formed, inlet pipe (10) one ends are fixed on outside the tube wall (15-3) of gas input and discharge equipment (C), the outside inlet pipe (10) of tube wall (15-3) that is in gas input and discharge equipment (C) is provided with thief hole (11), the other end of inlet pipe (10) passes the interior water level top, settling region (4) that tube wall (15-3) is fixed on gas input and discharge equipment (C), the inner inlet pipe (10) of tube wall (15-3) is provided with first venting hole (7-1), the cross section of first venting hole (7-1) is cruciform, and the bottom of the settling region (4) of gas input and discharge equipment (C) is equipped with evacuated tube (9).

6, sewage according to claim 1, chemical industry bad smell biological drip filter deodorization system, it is characterized in that gas output device (D) is made up of gas trap (6), second venting hole (7-2), second venting hole (7-2) is connected on the top of gas trap (6).

7, sewage, chemical industry bad smell biological drip the method for filter deodorization, it is characterized in that this method comprises the following steps:

A, cultivate active sludge, mud is mixed with septic tank, water drain mixed solution cultivate, being cultured to VSS/SS is to be advisable more than 0.68;

B, will put into reactor (1) through the active sludge that steps A obtains, down reactor (2) soaks and inoculates, and emptying every day, recharge behind the aeration in reactor (1), the following reactor (2), bubbling air and spray circulation fluid after four days, there is very thin one deck microbial film on filler (5) surfaces, two week backs, and the biofilm phase is to finish in 18～22 days:

C, startup bio-trickling deodorization system, the H that keeps inlet pipe (10) to enter the mouth ₂S concentration is 250～1700mg/m ³, promptly keep volumetric loading at 13～90g/m ³H, Control Circulation liquid spray flux is 10～60L/s, and gas flow is 100～400L/s, and gas residence time was controlled at 20～70 seconds, and pH is controlled between 2～7; Temperature is controlled between 15～30 ℃;

The cycle of D, interpolation circulation fluid is 9～15 days.

8, sewage, chemical industry bad smell biological according to claim 7 drip the method for filtering deodorization, it is characterized in that it also is included in reactor (1), adds autotrophy or heterotrophism deodorization bacterium in the reactor (2) down.

9, sewage according to claim 7, chemical industry bad smell biological drip the method for filter deodorization, and the floor height that it is characterized in that filler (5) is 600～1200mm.

10, sewage according to claim 7, chemical industry bad smell biological drip the method for filter deodorization, it is characterized in that circulation fluid is by glucose 0.08-0.12g/L, peptone 0.5-1.0g/L, dipotassium hydrogen phosphate 0.55-0.65g/L, potassium primary phosphate 0.55-0.65g/L, magnesium chloride 0.08-0.12g/L, NH ₄Cl 0.18-0.22g/L, ferrous sulfate 0.015-0.03g/L, sal epsom 0.015-0.03g/L, surplus are that water is formed.

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