CN108298766A - Sodium methyl mercaptide production wastewater treatment device - Google Patents

Abstract

The present invention relates to a kind of sodium methyl mercaptide production wastewater treatment devices, including the first regulating reservoir, ozone stripping pond, the second regulating reservoir, Fenton pond, anaerobic pond, aerobic tank, sedimentation basin and stripping gas disposal tank；Ozone stripping bottom of pond portion is provided with ozonation aerated disk, and the top of the ozonation aerated disk is equipped with ozone stripping pond water distributor, and ozone stripping pond water distributor connects ozone stripping pond water inlet pipe；Fenton pond includes mixed zone and Disengagement zone, and mixed zone bottom is equipped with Fenton pond water inlet pipe, and Fenton pond water inlet pipe is connected to the second regulating reservoir outlet pipe；Mixed zone middle and upper part is equipped with liquid and adds metering system, and mixed zone middle and lower part is provided with Fenton pond blender；Anaerobic pond includes simultaneous oxygen section, anoxic section and the anaerobism section being separated by baffle plate；Middle and lower part is provided with aerobic tank water inlet pipe in aerobic tank, and aerobic tank water inlet pipe lower part is equipped with water distribution pyrometric cone；It is followed successively by collecting chamber, adsorption chamber, moist chamber, activated carbon chamber and exhaust fan upwards from pot bottom in stripping gas disposal tank.

Description

Sodium methyl mercaptide production wastewater treatment device

technical field

The invention relates to the technical field of sewage treatment, in particular to a waste water treatment device for sodium methyl mercaptide production.

Background technique

Sodium methyl mercaptide is a raw material for pesticides, pharmaceuticals and dye intermediates, and its demand in domestic and foreign markets is increasing. However, according to the current production process of sodium methyl mercaptide, it is difficult to avoid the generation of some malodorous gases and toxic pollutants in the production process, which is easy to pollute the environment and endanger human health. Some domestic enterprises producing sodium methyl mercaptan did not have strict protection and treatment measures, which eventually led to the overflow of methyl mercaptan gas. Workers were poisoned without protective measures, and some even died without treatment in time.

Sodium methyl mercaptide production wastewater is a kind of wastewater with high COD, strong alkalinity and extremely odor. Therefore, the treatment of this wastewater is not only to reduce the COD value of wastewater, but also to remove the odor to reduce environmental pollution. Among them, the odor of wastewater mainly comes from methyl mercaptan and excess sodium hydrosulfide, so the odor removal mainly targets these two substances.

Many domestic enterprises had to close down due to lack of appropriate treatment measures or methods, resulting in surrounding environmental pollution, which affected the market demand for sodium methyl mercaptan to a certain extent. At present, the odor and other gases produced by the production process of sodium methyl mercaptide in industry can be removed by incineration, or converted into low-toxic substances by using hydrogen peroxide, while most of the sodium methyl mercaptide waste water is oxidized by chlorine. This method brings problems such as secondary pollution.

Contents of the invention

The technical problem to be solved in the present invention is: in order to solve the difficult problem of treating wastewater produced by sodium methyl mercaptide, the invention provides a wastewater treatment device for producing sodium methyl mercaptide.

The technical solution adopted by the present invention to solve its technical problems is: a kind of sodium methyl mercaptide production wastewater treatment device, including the first regulating pond, ozone blowing pond, the second regulating pond, Fenton pond, anaerobic pond, aerobic Pools, sedimentation tanks and degassing treatment tanks.

The first regulating pond includes a water inlet pipe of the first regulating pond and an outlet pipe of the first regulating pond, which are used for regulating the water quality and quantity of the wastewater produced by sodium methyl mercaptide. The first adjustment pool is provided with a closed structure with a cover to prevent odor leakage.

The bottom of the ozone blow-off tank is provided with an ozone aeration disc, and the top of the ozone aeration disc is provided with an ozone blow-off tank water distribution pipe, and the ozone blow-off tank water distribution pipe is connected to the ozone blow-off tank inlet pipe, and the ozone blow-off The pool inlet pipe is connected to the outlet pipe of the first regulating pool; the ozone aeration pan is connected to an ozone blower outside the ozone blow-off pool through a pipeline, and the ozone blower is connected to the ozone generator through a pipeline; the upper part of the outlet of the ozone blow-off pool is provided with an ozone The overflow weir of the blow-off pool, the overflow weir of the ozone blow-off pool is connected to the outlet pipe of the ozone blow-off pool; The gas collecting pipe is connected with the gas collecting pump of the ozone blowing tank.

The second regulating pond includes a water inlet pipe of the second regulating pond, a pH measurement and control system and an outlet pipe of the second regulating pond, which are used for regulating the pH value of the wastewater produced by sodium methyl mercaptide. The water inlet pipe of the second regulating tank is connected with the water outlet pipe of the ozone blowing tank. The second adjustment pool is provided with a cover, which is a closed structure to prevent the leakage of odor.

The Fenton pond includes a mixing zone and a separation zone, the bottom of the mixing zone is provided with a Fenton pond inlet pipe, and the Fenton pond inlet pipe is connected to the outlet pipe of the second regulating pond; the upper part of the Fenton pond inlet pipe is provided with a Fenton pond aeration pipe The aeration plate of the Fenton pool is connected to the gas collection pump of the ozone blowing tank; the middle and upper part of the mixing area is equipped with a liquid medicine adding metering system for adding hydrogen peroxide and ferrous salt, and the middle and lower part of the mixing area is equipped with a Fenton pool agitator ; In the separation zone, a clapboard is provided, and the inwall of the clapboard and the Fenton pool forms a waste water flow path that enters the separation zone as waste water, and the outlet of the separation zone is provided with a Fenton pool three-phase separator, and the outlet of the separation zone The upper part is equipped with a Fenton pool overflow weir, and the Fenton pool overflow weir is connected to the outlet pipe of the Fenton pool; the bottom of the separation area is designed as a conical structure, and a Fenton pool sediment discharge valve is installed at the bottom of the separation area. The upper part of the Fenton pool is provided with a conical upper cover, and the top of the Fenton pool's conical upper cover is provided with a Fenton pool air collecting pipe, and the Fenton pool air collecting pipe is connected with the Fenton pool air collecting pump.

The anaerobic pool includes a participatory section, anoxic section and anaerobic section separated by a baffle plate, the head end of the participatory section is provided with an anaerobic pool inlet pipe for feeding waste water, and the anaerobic pool inlet pipe The end of the anoxic section is connected to the head of the anoxic section, and the end of the anoxic section is connected to the head of the anaerobic section. The lower part of the baffle on the inlet side of the anoxic section and the anaerobic section is provided with 45 The angle of rotation is high to avoid the impact of water flow when it enters, so as to buffer the water flow and distribute water evenly; at the end of the anaerobic section, there is an anaerobic tank three-phase separator and anaerobic tank overflow weir, and the anaerobic tank overflows The weir is connected to the outlet pipe of the anaerobic tank; the bottom of the anaerobic section, the anoxic section and the anaerobic section is designed as a conical structure, and the conical structure is connected to the sludge discharge valve of the anaerobic tank; the anaerobic section of the anaerobic tank, The upper cover of the anoxic section and the anaerobic section is designed as a conical structure, and the top of the conical structure is provided with a methane collecting pipe; the anaerobic section, the anoxic section and the anaerobic section are all equipped with anaerobic tank fillers.

The middle and lower part of the aerobic pool is provided with an aerobic pool inlet pipe, and the aerobic pool inlet pipe is connected to the anaerobic pool outlet pipe; the lower part of the aerobic pool inlet pipe is provided with a water distribution triangle; There is an aerobic tank aeration control system, the aerobic tank aeration control system includes an aerobic tank aeration disc, an aerobic tank blower and a dissolved oxygen measurement and control device, further, the aerobic tank aeration disc is uniform A microporous aeration disc with micropores is provided. The aeration plate of the aerobic pool is connected to the blower of the aerobic pool through the aeration pipe, the blower of the aerobic pool is arranged outside the aerobic pool, and an oxygen measurement and control system is set on the top of the aerobic pool and under the surface of the wastewater, and the oxygen measurement and control system According to the oxygen content in the wastewater, the work of the blower in the aerobic pool is regulated; the upper part of the inlet pipe of the aerobic pool has an aerobic pool filler; the bottom of the aerobic pool is provided with an aerobic pool sludge discharge valve, An aerobic pool overflow weir is arranged, and the aerobic pool overflow weir is connected to the outlet pipe of the aerobic pool. The upper part of the aerobic pool is provided with a conical upper cover, and the top of the conical upper cover of the aerobic pool is provided with an aerobic pool air collecting pipe, and the aerobic pool air collecting pipe is connected with the aerobic pool air collecting pump.

The outlet pipe of the aerobic tank is connected to the inlet pipe of the sedimentation tank, and the wastewater is discharged or reused after being settled.

The inside of the degassing treatment tank includes a collection chamber, an adsorption chamber, a dehumidification chamber, an activated carbon chamber and an exhaust fan sequentially from the bottom of the tank upwards.

The collection chamber is located at the bottom of the entire tank; the bottom of the collection chamber is designed as a conical structure to collect the muddy water from the upper part, and the bottom of the conical structure is provided with a blow-off gas treatment tank discharge valve. The upper part of the collection chamber is provided with a treatment tank inlet pipe and a treatment tank distribution pipe. The gas distribution pipe of the treatment tank is connected with the air intake pipe of the treatment tank, and the air intake pipe of the treatment tank is connected with the gas collection pump of the Fenton pool and the gas collection pump of the aerobic pool.

The adsorption chamber is located on the upper part of the collection chamber, and a compartment plate with holes is arranged between the collection chamber and the adsorption chamber. The adsorption chamber is provided with an adsorption chamber filler, and the adsorption chamber filler is made by mixing livestock manure, sawdust and polyethylene hollow balls at a volume ratio of 1:5:5-10.

The upper part of the adsorption chamber is equipped with a dehumidification chamber. The dehumidification chamber collects the large liquid droplets in the gas and returns them to reduce the moisture in the gas. The working principle is that the gas enters the dehumidification chamber and passes through a series of curves. It is discharged from the top, and the water droplets, due to their mass and kinetic energy, fall straight down when passing through the curved part, collide with the surface of the dehumidification chamber, and bounce back under the action of gravity. The dehumidification chamber is provided with a wire mesh dehumidifier.

The upper part of the dehumidification chamber is provided with an activated carbon chamber, and activated carbon is arranged in the activated carbon chamber. The activated carbon is required to have the advantages of developed pores, large specific surface area, fast adsorption speed, anti-friction, and washing resistance. After a long period of operation, it is found that The activated carbon becomes viscous, and the activated carbon needs to be replaced in time when the gas velocity decreases.

The middle of the blowing and degassing treatment tank is cylindrical, and the upper and lower ends are conical tanks. The tank is provided with an observation port and a maintenance and replacement port. The volume of the tank is determined according to the amount of gas to be treated. Stand vertically.

In order to facilitate the discharge of the treated clean gas, an exhaust fan is installed at the uppermost conical tank of the stripping gas treatment tank.

Adopt above-mentioned sodium methyl mercaptide to produce wastewater treatment device to carry out the step of wastewater treatment as follows:

①The waste water from the production of sodium methyl mercaptide enters the first regulating tank through the inlet pipe of the first regulating tank to adjust the water quality and quantity of the waste water from the production of sodium methyl mercaptide.

②The adjusted wastewater enters the ozone blowing tank through the inlet pipe of the ozone blowing tank, and the water distribution pipe of the ozone blowing tank distributes water evenly, and the ozone aeration disc generates a large number of fine air bubbles, which oxidize the macromolecular pollutants in the wastewater into easy-to-absorb and adsorbed small molecular substances, the oxidized and decomposed wastewater enters the water inlet pipe of the second regulating tank through the overflow weir of the ozone blowing tank and the outlet pipe of the ozone blowing tank, and the odor in the wastewater is blown out of the water surface and passes through the gas collection pipe of the ozone blowing tank Under the action of the gas collection pump in the ozone stripping tank, it enters the aeration pan of the Fenton tank.

③ Then the waste water enters the second regulating pond through the inlet pipe of the second regulating pond to adjust the pH value of the wastewater produced by sodium methyl mercaptide.

④ Then the waste water enters the Fenton pool through the outlet pipe of the second regulating pool and the water inlet pipe of the Fenton pool, mixes with hydrogen peroxide and ferrous salt from the liquid medicine addition metering system, and stirs with the Fenton pool agitator; The aeration pan blows the odor from the ozone stripping tank into the wastewater in the Fenton tank. Hydrogen peroxide reacts with ferrous salt to generate a large number of active hydroxyl radicals. The pollutants in the wastewater are oxidized and decomposed, and the oxidized and decomposed Wastewater enters the separation area, and the three-phase separator of the Fenton pool realizes solid-liquid separation. The solid matter sinks to the lower part of the separation area under the action of gravity, and is discharged through the sediment discharge valve of the Fenton pool at the bottom; the waste water passes through the overflow of the Fenton pool The weir and Fenton pond outlet pipes enter the anaerobic pond inlet pipes. The odor escaping from the water surface enters the degassing treatment tank through the Fenton pool air collection pipe and the Fenton pool air collection pump.

⑤Wastewater enters the lower part of the anaerobic tank through the inlet pipe of the anaerobic tank; after entering the anaerobic tank, the wastewater advances up and down along the baffle, and passes through the sludge bed of each reaction chamber in the facultative, anoxic and anaerobic sections in turn , the sludge in the reaction tank moves with the up and down flow of wastewater and the rise of biogas, the blocking effect of the baffle plate and the sedimentation effect of the sludge itself reduce the flow rate of the sludge, so a large amount of sludge is intercepted In the reaction tank, the microorganisms in the reaction tank fully contact with the pollutants in the wastewater. The facultative bacteria in the facultative stage, the heterotrophic bacteria in the anoxic stage and the anaerobic stage decompose the macromolecular pollutants in the wastewater into small molecular pollutants, and convert the insoluble pollutants into soluble pollutants. The wastewater after the anaerobic reaction is separated from mud, water and methane gas under the action of the three-phase separator in the anaerobic tank. Oxygen pool sludge discharge valve discharge. The methane gas produced by the anaerobic tank is collected and discharged through the methane gas collecting pipe at the top of the reaction tank; the waste water enters the aerobic tank inlet pipe through the anaerobic tank overflow weir and the anaerobic tank outlet pipe.

⑥Wastewater enters the middle and lower part of the aerobic pool through the inlet pipe of the aerobic pool, and the water is evenly distributed under the action of the water distribution triangle cone. Work to ensure that the oxygen content in the aerobic pool water is greater than 2mg/L; the activated sludge adheres to and grows on the surface of the filler in the aerobic pool, because the biofilm is directly stirred by the updraft and is constantly renewed; under the condition of sufficient oxygen supply, the aerobic pool The aerobic microorganisms on the surface of the filler degrade the pollutants in the wastewater; the renewed biofilm sinks to the lower part of the aerobic tank under the action of gravity, and is discharged through the sludge discharge valve of the aerobic tank at the bottom; the water after aerobic treatment It is discharged through the overflow weir of the aerobic pool and the outlet pipe of the aerobic pool. The gas escaping from the water surface enters the degassing treatment tank through the aerobic pool gas collecting pipe and the aerobic pool gas collecting pump.

⑦ The effluent from the aerobic tank enters the sedimentation tank through the inlet pipe of the sedimentation tank, and the waste water is discharged or reused after being settled in the sedimentation tank.

⑧The sediment or sludge produced in Fenton pond, anaerobic pond, aerobic pond and sedimentation pond shall be dehydrated and shipped out.

⑨Odor gas from the gas collection pump of the Fenton tank and the gas collection pump of the aerobic tank enters the degassing treatment tank through the inlet pipe of the treatment tank, and the gas distribution pipe of the treatment tank distributes the gas evenly; the odor enters the adsorption chamber, and the pollutants in the odor are adsorbed The microorganisms in the chamber filler adsorb and undergo biochemical reactions; the gas then enters the dehumidification chamber, where the liquid droplets in the gas are intercepted; then the gas enters the activated carbon chamber, where the substances and liquid droplets contained in the gas are intercepted and adsorbed, At this point, the odor is processed into a clean gas to achieve emission standards. The muddy water produced by the degassing treatment tank is discharged through the discharge valve of the degassing treatment tank.

Description of drawings

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Fig. 1 is a structural schematic diagram of an ozone blowing tank according to an embodiment of the present invention.

In Fig. 1: 1. Ozone blowing tank, 1-1. Ozone aeration pan, 1-2. Ozone blowing tank distribution pipe, 1-3. Ozone blowing tank inlet pipe, 1-4. Ozone blower, 1 -5. Ozone generator, 1-6. Ozone stripping pool overflow weir, 1-7. Ozone stripping pool gas collection pipe, 1-8. Ozone stripping pool gas collection pump.

Fig. 2 is a schematic structural diagram of a Fenton cell according to an embodiment of the present invention.

In Fig. 2: 2. Fenton pool, 2-1 mixing area, 2-2. collection area, 2-3. Fenton pool inlet pipe, 2-4. Fenton pool aeration disc, 2-5. liquid medicine Add metering system, 2-6. Fenton pool agitator, 2-7. Baffle, 2-8. Fenton pool three-phase separator, 2-9. Fenton pool overflow weir, 2-10. Fenton pool Sediment discharge valve, 2-11. Fenton pool air collection pipe, 2-12. Fenton pool air collection pump.

Fig. 3 is a schematic structural view of an anaerobic tank according to an embodiment of the present invention.

Among Fig. 3: 3. anaerobic pond, 3-1. baffle plate, 3-2. concurrent oxygen section, 3-3. anoxic section, 3-4. anaerobic section, 3-5. anaerobic pond enters Water pipe, 3-6. Anaerobic tank three-phase separator, 3-7. Anaerobic tank overflow weir, 3-8. Anaerobic tank sludge discharge valve, 3-9. Anaerobic tank upper cover, 3-10. Methane Gas header, 3-11. Anaerobic pond filler.

Fig. 4 is a schematic structural diagram of an aerobic pool according to an embodiment of the present invention.

In Fig. 4: 4. Aerobic pool, 4-1. Aerobic pool inlet pipe, 4-2. Water distribution triangle cone, 4-3. Aerobic pool aeration control system, 4-4. Aerobic pool filler, 4-5. Aerobic pool sludge discharge valve, 4-6. Aerobic pool overflow weir, 4-7. Aerobic pool air collection pipe, 4-8. Aerobic pool air collection pump.

Fig. 5 is the structural schematic diagram of the degassing treatment tank of the embodiment of the present invention;

In the figure: 5. Degassing treatment tank, 5-1. Collection chamber, 5-2. Adsorption chamber, 5-3. Dehumidification chamber, 5-4. Activated carbon chamber, 5-5. Exhaust fan, 5-6 .Degassing treatment tank discharge valve, 5-7. Treatment tank inlet pipe, 5-8. Treatment tank distribution pipe.

Fig. 6 is a process flow diagram of an embodiment of the present invention.

Detailed ways

The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

Example

As shown in Fig. 1, a kind of sodium methyl mercaptide production waste water treatment device of the present invention comprises the first regulating pond, ozone stripping pond 1, the second regulating pond, Fenton pond 2, anaerobic pond 3, aerobic pond 4. Sedimentation tank and degassing treatment tank.

The first regulating pond includes a water inlet pipe of the first regulating pond and an outlet pipe of the first regulating pond, which are used for regulating the water quality and quantity of the wastewater produced by sodium methyl mercaptide. The first adjustment pool is provided with a cover, which is a closed structure to prevent the leakage of odor.

The bottom of the ozone blow-off tank 1 is provided with an ozone aeration pan 1-1, and the top of the ozone aeration pan is provided with an ozone blow-off pool water distribution pipe 1-2, and the ozone blow-off pool water distribution pipe is connected to the ozone blow-off The pool inlet pipe 1-3, the ozone blow-off pool inlet pipe 1-3 is connected to the outlet pipe of the first regulating pool; the ozone aeration plate 1-1 is connected with the ozone blower 1-4 outside the ozone blow-off pool through pipelines, The ozone fan 1-4 is connected to the ozone generator 1-5 through the pipeline; the upper part of the outlet of the ozone blowing tank is provided with the overflow weir 1-6 of the ozone blowing tank, and the overflow weir 1-6 of the ozone blowing tank is connected to the outlet pipe of the ozone blowing tank The upper part of the ozone blow-off pool is provided with a conical loam cake, and the top of the cone-shaped loam cake is provided with an ozone blow-off pool gas collection pipe 1-7, and the ozone blow-off pool gas collection pipe 1-7 is connected to the ozone blow-off pool air-collecting pump 1-8.

The second regulating pond includes a water inlet pipe of the second regulating pond, a pH measurement and control system and an outlet pipe of the second regulating pond, which are used for regulating the pH value of the wastewater produced by sodium methyl mercaptide. The water inlet pipe of the second regulating tank is connected with the water outlet pipe of the ozone blowing tank. The second adjustment pool is provided with a cover, which is a closed structure to prevent the leakage of odor.

The Fenton pool 2 includes a mixing zone 2-1 and a separation zone 2-2, the bottom of the mixing zone is provided with a Fenton pool water inlet pipe 2-3, and the Fenton pool water inlet pipe 2-3 is connected to the second adjustment pool outlet pipe; The upper part of the inlet pipe of the Fenton tank is provided with the aeration disc 2-4 of the Fenton tank, and the aeration disc 2-4 of the Fenton tank is connected to the gas collection pump 1-8 of the ozone blowing tank; The liquid medicine of ferrous salt adds metering system 2-5, is provided with Fenton pool agitator 2-6 in the mixing zone middle and lower part; Described separation zone is provided with dividing plate 2-7, and this dividing plate and Fenton pool The inner wall forms a waste water flow channel as waste water enters the separation zone, the outlet of the separation zone is provided with a Fenton pool three-phase separator 2-8, and the upper part of the exit of the separation zone is provided with a Fenton pool overflow weir 2-9, and the Fenton pool overflow The weir 2-9 is connected to the outlet pipe of the Fenton pond; the bottom of the separation zone is designed as a conical structure, and a Fenton pond sediment discharge valve 2-10 is arranged at the lower part of the conical structure. The upper part of the Fenton pool is provided with a conical upper cover, and the top of the Fenton pool conical upper cover is provided with a Fenton pool air collecting pipe 2-11, and the Fenton pool air collecting pipe 2-11 is connected with the Fenton pool air collecting pump 2-12.

The anaerobic tank 3 includes a part-aerobic section 3-2, an anoxic section 3-3 and anaerobic section 3-4 separated by a baffle plate 3-1, and the head end of the part-aerobic section 3-2 is provided with a The anaerobic pool inlet pipe 3-5 that feeds wastewater is connected to the outlet pipe of the Fenton pool; the end of the anaerobic section 3-2 is connected to the head of the anoxic section 3-3, and the anoxic section The end of 3-3 communicates with the head end of anaerobic section 3-4, and the lower part of the baffle on the water inlet side of the anoxic section 3-3 and anaerobic section 3-4 is provided with a 45-degree corner to prevent water from entering The impact effect generated during the time, thus playing the role of buffering water flow and uniform water distribution; the end of anaerobic section 3-4 is equipped with anaerobic tank three-phase separator 3-6 and anaerobic tank overflow weir 3-7, anaerobic tank The overflow weir 3-7 is connected to the outlet pipe of the anaerobic tank; the bottom of the anaerobic section 3-2, the anoxic section 3-3 and the anaerobic section 3-4 is designed as a conical structure, and the conical structure is connected to the sludge in the anaerobic tank Discharge valve 3-8; The loam cake 3-9 of the concurrent oxygen section, the anoxic section and the anaerobic section of the anaerobic tank is designed as a conical structure, and the top of the conical structure is provided with a methane gas collecting pipe 3-10; The anaerobic tank filler 3-11 is all provided in the facultative oxygen section, the anoxic section and the anaerobic section.

The middle and lower part of the aerobic pool 4 is provided with an aerobic pool inlet pipe 4-1, and the aerobic pool inlet pipe 4-1 is connected to the anaerobic pool outlet pipe; the lower part of the aerobic pool inlet pipe 4-1 is provided with a water distribution pipe Triangular cone 4-2; the lower part of the water distribution triangular cone 4-2 is provided with an aerobic tank aeration control system 4-3, and the aerobic tank aeration control system 4-3 includes an aerobic tank aeration disc, a well An oxygen tank blower and a dissolved oxygen measuring and controlling device; further, the aeration pan in the aerobic pool is a microporous aeration pan with micropores uniformly arranged therein. The aeration plate of the aerobic pool is connected to the blower of the aerobic pool through the aeration pipe, and the blower of the aerobic pool is arranged outside the aerobic pool; an oxygen measurement and control system is set on the upper part of the aerobic pool and under the surface of the wastewater, and the oxygen measurement and control system Regulate the work of the blower according to the oxygen content; the aerobic tank filler 4-4 is built in the upper part of the aerobic tank inlet pipe 4-1; the aerobic tank sludge discharge valve 4-5 is arranged at the bottom of the aerobic tank, and the aerobic tank outlet An aerobic pool overflow weir 4-6 is arranged at the place, and the aerobic pool overflow weir 4-6 is connected to the outlet pipe of the aerobic pool. The upper part of the aerobic pool is provided with a conical upper cover, and the top of the conical upper cover of the aerobic pool is provided with an aerobic pool air collecting pipe 4-7, and the aerobic pool air collecting pipe is connected with the aerobic pool air collecting pump 4-8.

The outlet pipe of the aerobic tank is connected to the inlet pipe of the sedimentation tank, and the waste water is discharged or reused after being settled in the sedimentation tank.

The degassing treatment tank 5 includes a collection chamber 5-1, an adsorption chamber 5-2, a dehumidification chamber 5-3, an activated carbon chamber 5-4 and an exhaust fan 5-5 from the bottom of the tank upwards.

The collection chamber 5-1 is located at the bottom of the whole tank; the bottom of the collection chamber 5-1 is designed as a conical structure to collect muddy water from the upper part, and the bottom of the conical structure of the collection chamber is provided with a degassing Dispose of tank drain valve 5-6. The upper part of the collection chamber is provided with a treatment tank inlet pipe 5-7 and a treatment tank distribution pipe 5-8. The gas distribution pipe 5-8 of the treatment tank communicates with the air intake pipe 5-7 of the treatment tank, and the air intake pipe 5-7 of the treatment tank communicates with the gas collection pump 2-12 of the Fenton pool and the gas collection pump 4-8 of the aerobic pool.

The adsorption chamber 5-2 is located on the upper part of the collection chamber 5-1, and a compartment plate with holes is arranged between the collection chamber 5-1 and the adsorption chamber 5-2. The adsorption chamber is provided with an adsorption chamber filler, and the adsorption chamber filler is made by mixing livestock manure, sawdust and polyethylene hollow balls at a volume ratio of 1:5:5.

The upper part of the adsorption chamber is provided with a dehumidification chamber 5-3. The dehumidification chamber 5-3 collects the large liquid droplets in the gas and returns them to reduce the moisture in the gas. Its working principle is that the gas enters the dehumidification chamber 5. -3, go through a series of bends and discharge from the top, and the water droplets fall straight down when passing through the bends due to their mass and kinetic energy, collide with the surface of the dehumidification chamber, and bounce back under the action of gravity. The dehumidification chamber 5-3 is provided with a wire mesh dehumidifier.

The upper part of the dehumidification chamber is provided with an activated carbon chamber 5-4, and activated carbon is arranged in the described activated carbon chamber 5-4. The activated carbon is required to have the advantages of well-developed pores, large specific surface area, fast adsorption speed, friction resistance, and washing resistance. After running for a long time, it is found that the activated carbon becomes sticky, and the activated carbon needs to be replaced in time when the gas velocity decreases.

The middle of the blowing and degassing treatment tank 5 is cylindrical, and the upper and lower ends are conical tanks. The tank is provided with an observation port and a maintenance and replacement port. The volume of the tank depends on the amount of gas to be treated. , placed vertically.

In order to facilitate the discharge of the treated clean gas, an exhaust fan 5-5 is installed at the uppermost conical tank of the stripping gas treatment tank.

Adopt above-mentioned sodium methyl mercaptide to produce wastewater treatment device to carry out the step of wastewater treatment as follows:

①The waste water from the production of sodium methyl mercaptide enters the first regulating tank through the inlet pipe of the first regulating tank to adjust the water quality and quantity of the waste water from the production of sodium methyl mercaptide.

②The adjusted wastewater enters the ozone blowing tank 1 through the inlet pipe 1-3 of the ozone blowing tank, and the water distribution pipe 1-2 of the ozone blowing tank distributes water evenly, and the ozone aeration plate 1-1 produces a large number of fine bubbles, and the waste water The macromolecular pollutants are oxidized into small molecular substances that are easy to absorb and absorb. The oxidized and decomposed wastewater passes through the overflow weir 1-6 of the ozone blowing tank and the outlet pipe of the ozone blowing tank into the inlet pipe of the second regulating tank. The gas is blown out of the water surface, passes through the gas collection pipe 1-7 of the ozone stripping pool, and enters the aeration pan 2-4 of the Fenton pool under the action of the gas collection pump 1-8 of the ozone stripping pool.

③The waste water from the production of sodium methyl mercaptide enters the second regulating tank through the inlet pipe of the second regulating tank, and adjusts the pH value of the waste water from the production of sodium methyl mercaptide in the range of 2.5 to 3.5.

④ Then the waste water enters the Fenton pool 2 through the outlet pipe of the second regulating pool and the water inlet pipe 2-3 of the Fenton pool, mixes with hydrogen peroxide and ferrous salt from the medicinal liquid addition metering system 2-5, and stirs with the Fenton pool The device 2-6 is stirred; Fenton tank aeration disc 2-4 blows the foul gas from the ozone blowing tank into the waste water of Fenton tank, hydrogen peroxide reacts with ferrous salt to produce a large amount of active hydroxyl radicals, The pollutants in the wastewater are oxidized and decomposed, and the oxidized and decomposed wastewater enters the separation zone 2-2, and the Fenton cell three-phase separator 2-8 realizes solid-liquid separation, and the solids sink to the lower part of the separation zone under the action of gravity , discharged through the Fenton pond sediment discharge valve 2-10 at the bottom; waste water enters the anaerobic pond inlet pipe 3-5 through the Fenton pond overflow weir 2-9 and the Fenton pond outlet pipe. The foul gas escaping from the water surface enters the degassing treatment tank 5 through the Fenton pool air collecting pipe 2-11 and the Fenton pool air collecting pump 2-12.

⑤Wastewater enters the lower part of the anaerobic pool through the inlet pipe 3-5 of the anaerobic pool; after entering the anaerobic pool, the waste water advances up and down along the baffle plate, passing through the facultative section 3-2, the anoxic section 3-3 and the anaerobic section in turn The sludge bed in each reaction chamber of 3-4, the sludge in the reaction tank moves with the up and down flow of wastewater and the rise of biogas, the blocking effect of the baffle plate and the sedimentation of the sludge itself make the sludge The flow rate is reduced, so a large amount of sludge is trapped in the reaction tank, and the microorganisms in the reaction tank are in full contact with the pollutants in the wastewater. Facultative bacteria in facultative stage 3-2, heterotrophic bacteria in anoxic stage 3-3 and anaerobic stage 3-4 decompose macromolecular pollutants in wastewater into small molecular pollutants, and convert insoluble pollutants into soluble pollutants. The wastewater after the anaerobic reaction is separated from mud, water and methane under the action of the three-phase separator 3-6 in the anaerobic tank. The sludge sinks to the lower part of the anaerobic section under the action of gravity, and the excess sludge passes through The anaerobic tank sludge discharge valve 3-8 at the bottom is discharged. The methane gas produced in the anaerobic tank is collected and discharged through the methane gas collecting pipe 3-10 at the top of the reaction tank; the waste water enters the aerobic tank inlet pipe 4-1 through the anaerobic tank overflow weir 3-7 and the anaerobic tank outlet pipe.

⑥Wastewater enters the middle and lower part of the aerobic pool through the aerobic pool inlet pipe 4-1, and the water is evenly distributed under the action of the water distribution triangle 4-2. The device regulates the work of the blower in the aerobic pool to ensure that the oxygen content in the aerobic pool water is greater than 2mg/L; the activated sludge adheres to and grows on the surface of the filler 4-4 in the aerobic pool, and the biofilm is constantly renewed due to the agitation of the updraft; Under the condition of oxygen supply, the aerobic microorganisms on the surface of the aerobic tank filler 4-4 degrade the pollutants in the wastewater; the renewed biofilm sinks to the lower part of the aerobic tank under the action of gravity, and passes through the aerobic tank at the bottom The sludge discharge valve 4-5 is discharged; the water after aerobic treatment is discharged through the overflow weir 4-6 of the aerobic pool and the outlet pipe of the aerobic pool. The gas escaping from the water surface enters the degassing treatment tank 5 through the aerobic tank gas collecting pipe 4-7 and the aerobic tank gas collecting pump 4-8.

⑦ The effluent from the aerobic tank enters the sedimentation tank through the inlet pipe of the sedimentation tank, and the waste water is discharged or reused after being settled in the sedimentation tank.

⑧ The sediment or sludge produced in Fenton pool 2, anaerobic pool 3, aerobic pool 4 and sedimentation tank are dehydrated and shipped out.

⑨Odor gas from Fenton tank gas collection pump 2-12 and aerobic tank gas collection pump 4-8 enters the degassing treatment tank 5 through the inlet pipe 5-7 of the treatment tank, and the gas distribution pipe 5-8 of the treatment tank distributes gas evenly; The gas enters the adsorption chamber 5-2, and the pollutants in the odor are adsorbed by the microorganisms in the packing of the adsorption chamber and undergo biochemical reactions; the gas then enters the dehumidification chamber 5-3, where the liquid droplets in the gas are intercepted; then the gas enters Activated carbon chamber 5-4, where the substances and liquid droplets contained in the gas are intercepted and adsorbed, so that the odor is processed into clean gas, which is discharged up to the standard under the action of the exhaust fan 5-5. The muddy water produced by the degassing treatment tank is discharged through the discharge valve 5-6 of the degassing treatment tank.

Inspired by the above-mentioned ideal embodiment according to the present invention, through the above-mentioned description content, relevant workers can make various changes and modifications within the scope of not departing from the technical idea of the present invention. The technical scope of the present invention is not limited to the content in the specification, but must be determined according to the scope of the claims.

Claims (1)

1. a kind of sodium methyl mercaptide produces waste water treatment device, it is characterized in that: comprise the first regulating pond, ozone stripping pond (1), the second regulating pond, Fenton pond (2), anaerobic pond (3), Aerobic tank (4), sedimentation tank and blowing and degassing treatment tank (5); The first regulating pond comprises a first regulating pond inlet pipe and a first regulating pond outlet pipe, which are used to regulate the water quality and water quantity of sodium methyl mercaptide production wastewater; the first regulating pond is provided with an upper cover, which is a closed structure, Prevent odor leakage; The bottom of the ozone blow-off tank (1) is provided with an ozone aeration pan (1-1), and the top of the described ozone aeration pan is provided with an ozone blow-off tank water distribution pipe (1-2), and the ozone blow-off tank The water distribution pipe is connected to the water inlet pipe (1-3) of the ozone blow-off tank, and the water inlet pipe (1-3) of the ozone blow-off tank is connected to the outlet pipe of the first regulating tank; The ozone blower (1-4) outside the ozone blowing tank, the ozone blower (1-4) is connected to the ozone generator (1-5) through the pipeline; the outlet top of the ozone blowing tank is provided with the overflow weir of the ozone blowing tank (1 -6), the overflow weir (1-6) of the ozone blowing tank is connected to the outlet pipe of the ozone blowing tank; -7), the ozone blowing tank gas collection pipe (1-7) is connected to the ozone blowing tank gas collecting pump (1-8); The second regulating tank includes a second regulating tank inlet pipe, a pH value measurement and control system, and a second regulating tank outlet pipe for adjusting the pH value of the wastewater produced by sodium methyl mercaptide; the second regulating tank inlet pipe is connected to the ozone blow-off The outlet pipe of the pool; the second regulating pool is provided with an upper cover, which is a closed structure to prevent the leakage of odor; Described Fenton pool (2) comprises mixing area (2-1) and separation area (2-2), and the bottom of mixing area is provided with Fenton pool water inlet pipe (2-3), and Fenton pool water inlet pipe (2- 3) Connect to the outlet pipe of the second regulating tank; the upper part of the inlet pipe of the Fenton tank is provided with the aeration disc (2-4) of the Fenton tank, and the aeration disc (2-4) of the Fenton tank is connected to the gas collection pump of the ozone blowing tank (1 -8); the middle and upper part of the mixing zone is provided with a liquid medicine adding metering system (2-5) for adding hydrogen peroxide and ferrous salt, and a Fenton cell agitator (2-6) is arranged at the middle and lower part of the mixing zone; In the separation zone, a dividing plate (2-7) is provided, and the inwall of the dividing plate and the Fenton pool forms a waste water flow path that enters the separation zone as waste water, and the outlet of the separation zone is provided with a Fenton tank three-phase separator (2 -8), the upper part of the outlet of the separation zone is provided with a Fenton pool overflow weir (2-9), and the Fenton pool overflow weir (2-9) is connected to the Fenton pool outlet pipe; the bottom of the separation zone is designed as a conical structure. The lower part of the shaped structure is provided with a Fenton tank sediment discharge valve (2-10); the upper part of the Fenton tank is provided with a conical upper cover, and the top of the Fenton tank conical upper cover is provided with a Fenton tank gas collection pipe (2-11). The Fenton pool air collecting pipe (2-11) is connected with the Fenton pool air collecting pump (2-12); The anaerobic tank (3) comprises a part-aerobic section (3-2), an anoxic section (3-3) and an anaerobic section (3-4) separated by a baffle plate (3-1). The head end of the partaerobic section (3-2) is provided with an anaerobic pool inlet pipe (3-5) for feeding waste water, and the anaerobic pool inlet pipe (3-5) is connected to the Fenton pool outlet pipe; the partaerobic section (3 -2) the end communicates with the head of the anoxic section (3-3), and the end of the anoxic section (3-3) communicates with the head of the anaerobic section (3-4); the anoxic section (3-3) and The lower part of the baffle on the water inlet side of the anaerobic section (3-4) is provided with a 45-degree corner to avoid the impact of the water flow when it enters, so as to buffer the water flow and distribute water evenly; the anaerobic section (3-4) The end is provided with anaerobic tank three-phase separator (3-6) and anaerobic tank overflow weir (3-7), and anaerobic tank overflow weir (3-7) is connected with anaerobic tank outlet pipe; The bottom of the facultative section (3-2), anoxic section (3-3) and anaerobic section (3-4) is designed as a conical structure, and the conical structure is connected to the anaerobic tank sludge discharge valve (3-8) The loam cake (3-9) of the concurrent oxygen section, the anoxic section and the anaerobic section of the described anaerobic tank is designed into a conical structure, and the top of the conical structure is provided with a methane collector (3-10); Anaerobic tank fillers (3-11) are provided in the oxygen section, the anoxic section and the anaerobic section; The middle and lower part of the aerobic pool (4) is provided with an aerobic pool inlet pipe (4-1), and the aerobic pool inlet pipe (4-1) is connected to the anaerobic pool outlet pipe; the aerobic pool inlet pipe (4 -1) The lower part is provided with a water distribution triangle cone (4-2); the lower part of the water distribution triangle cone (4-2) is provided with an aerobic tank aeration control system (4-3), and the aerobic tank aeration The control system (4-3) includes an aerobic tank aeration disc, an aerobic tank blower and a dissolved oxygen measurement and control device; further, the aerobic tank aeration disc is a microporous aeration disc with micropores evenly arranged The aerobic tank aeration plate is connected to the aerobic tank blower through the aeration pipe, and the aerobic tank blower is arranged outside the aerobic tank; an oxygen measurement and control system is set on the top of the aerobic tank and under the wastewater surface, and the oxygen measurement and control The system regulates the work of the blower in the aerobic pool according to the oxygen content in the wastewater; the aerobic pool filler (4-4) is built in the upper part of the aerobic pool inlet pipe (4-1); The pool sludge discharge valve (4-5), the aerobic pool overflow weir (4-6) is arranged at the outlet of the aerobic pool, and the aerobic pool overflow weir (4-6) is connected to the outlet pipe of the aerobic pool; The upper part of the pool is provided with a conical upper cover, and the top of the aerobic pool’s conical upper cover is provided with an aerobic pool air collection pipe (4-7), and the aerobic pool air collection pipe is connected to the aerobic pool air collection pump (4-8); The outlet pipe of the aerobic tank is connected to the inlet pipe of the sedimentation tank, and the waste water is discharged or reused after being settled in the sedimentation tank; In the described degassing treatment tank (5), there are collection chamber (5-1), adsorption chamber (5-2), dehumidification chamber (5-3), activated carbon chamber (5-4) and exhaust fan (5-5); The collection chamber (5-1) is located at the bottom of the whole tank; the bottom of the collection chamber (5-1) is designed as a conical structure to collect muddy water from the top, and the bottom of the conical structure of the collection chamber is designed There is a discharge valve (5-6) for the degassing treatment tank; the upper part of the collection chamber is provided with a treatment tank inlet pipe (5-7) and a treatment tank distribution pipe (5-8); the treatment tank distribution pipe (5-8) and The treatment tank inlet pipe (5-7) is connected, and the treatment tank inlet pipe (5-7) is connected with the Fenton tank gas collection pump (2-12) and the aerobic tank gas collection pump (4-8); The adsorption chamber (5-2) is located on the top of the collection chamber (5-1), and a compartment plate with holes is arranged between the collection chamber (5-1) and the adsorption chamber (5-2); The chamber is equipped with an adsorption chamber filler, which is made by mixing livestock and poultry manure, sawdust and polyethylene hollow balls in a volume ratio of 1:5:5-10; The upper part of the adsorption chamber is provided with a dehumidification chamber (5-3), and the dehumidification chamber (5-3) is provided with a wire mesh dehumidifier; The upper part of the dehumidification chamber is provided with an activated carbon chamber (5-4), and activated carbon is arranged in the described activated carbon chamber (5-4); The middle of the blowing and degassing treatment tank (5) is cylindrical, and the upper and lower ends are conical tank bodies. The tank body is provided with an observation port and a maintenance and replacement port. The volume of the tank body depends on the amount of gas to be treated. Depending on the situation, use a vertical vertical placement; An exhaust fan (5-5) is installed at the uppermost conical tank body of the degassing treatment tank.