CN104593433A - Method and equipment for treating antibiotic mycelium residues - Google Patents

Abstract

The present invention provides a method and equipment for treating antibiotic bacterial residue. By preparing the antibiotic bacterial residue and water into a bacterial residue suspension and subjecting it to anaerobic fermentation treatment, the invention also provides an antibiotic bacterial residue processing equipment. It includes a slag water generation device, an anaerobic fermentation device, a gas-liquid separation device located above the anaerobic fermentation device, a biogas collection device located above the gas-liquid separation device, and a gas-liquid separation device connected with the anaerobic fermentation device. The riser tube of the fermentation unit. The antibiotic residue treatment method and equipment of the present invention, by performing anaerobic fermentation treatment on the mixed antibiotic residue and water bacterial residue suspension, overcome the inhibitory effect of traditional antibiotic residue anaerobic fermentation of antibiotics and other harmful substances, and It retains the number of dominant strains to the greatest extent, improves the efficiency of anaerobic fermentation, and has the advantages of small footprint, simple operation, and low cost.

Description

A method and equipment for treating antibiotic residue

technical field

The invention relates to a treatment method and equipment for antibiotic scum, which performs anaerobic fermentation treatment on a mixture of antibiotic slag and water, and belongs to the field of antibiotic treatment.

Background technique

Antibiotic residue is an inevitable product in the production process of the fermentation pharmaceutical industry. With the rapid development of the pharmaceutical industry, the output of antibiotic residues is also increasing. Bacterial residues are rich in protein. It was not until the 1950s that people began to realize the need to utilize the rich resources of antibiotic residues. However, from this beginning to the beginning of the 21st century, the application of antibiotic bacteria residues only stayed in the protein feed or additive field of aquaculture.

Before 2002, scholars focused on the reduction of antibiotic potency in the study of fungal residue, and did not evaluate the possible danger of residual potency. In 2002, the Supreme People's Court and the Supreme People's Procuratorate promulgated relevant supplementary regulations, including the prohibition of using antibiotic residues in feed and animal drinking water. In 2012, the "Pharmaceutical Industry Pollution Prevention and Control Technology Policy" (hereinafter referred to as "Technical Bulletin") announced that it clearly stated that antibiotic residues formed in fermentation production should be disposed of as hazardous waste.

In response to the continuous formation of antibiotic residues in the pharmaceutical industry and the practical problems that are difficult to deal with, the "Technical Bulletin" proposes to actively develop new methods for the disposal of fermented bacteria residues. For a time, the recycling and harmless technology of antibiotic bacteria residues became a research hotspot among scholars at home and abroad. Among them, anaerobic digestion technology has attracted the attention of many scholars due to its unique advantages of biogas resources and low consumption. But at this stage, the application of fermentation technology in the field of antibiotic residues mostly stays in laboratory shake flask experiments, simply using the method of mixing medicinal residues with inoculation mud, and there are few special reactions designed for the characteristics of anaerobic fermentation of antibiotic residues device.

Antibiotic slag contains a large amount of antibiotics, which will have a certain poisonous effect on microorganisms. Therefore, when anaerobic fermentation is carried out, the content of slag in the reactor must be controlled within an appropriate range. This invention designs a method of mixing slag and water The method and equipment for antibiotic scum can retain the number of fermentation flora to the greatest extent and improve fermentation efficiency.

Contents of the invention

The invention provides a method and equipment for treating antibiotic residues. Anaerobic fermentation is performed on mixed antibiotic residues and suspensions of bacteria residues in water, and the solid content of the suspensions is determined to ensure anaerobic fermentation. The fermentation device contains a large number of highly active microorganisms, which solves the problems that the residues of antibiotics and other dangerous substances in the treatment process of existing antibiotic residues are highly toxic to microorganisms and the ecological environment, and the sludge is difficult to separate. The inhibitory effect of fermenting microorganisms increases the reactor load.

One aspect of the present invention provides a method for treating antibiotic scum, comprising:

Mixing antibiotic residues with water in proportion to obtain suspensions of bacteria residues;

performing anaerobic fermentation treatment on the suspension of bacteria residue by using sludge to obtain a gas-liquid mixture in which antibiotics have been degraded;

After the gas-liquid mixture is separated and treated by a gas-liquid separation device, the separated biogas is transported to a biogas collection device, and the separated liquid is refluxed so that the sludge can be used for anaerobic fermentation treatment;

Wherein, the biogas collection device purifies and collects the separated biogas;

Wherein, the gas-liquid mixture obtained through anaerobic fermentation treatment is lifted to the gas-liquid separation device by using a riser tube.

Wherein, the described antibiotic scum and water are mixed in proportion to obtain the suspension of scum including:

adding 5-8 parts by weight of fungus residue to water with 92-95 parts by weight to obtain a mixed solution;

The mixed solution is stirred to obtain a suspension of fungus residue with a solid content of 5-8%.

Wherein, the said water is selected from tap water, reclaimed water, water that reaches the discharge standard after being treated by a sewage treatment plant, or effluent from a secondary settling tank for sewage treatment of an antibiotic production unit.

In particular, the water has a chroma≤30; pH: 6.5-7.5; COD≤100mg/L; SS≤30mg/L; NH ₃ -N≤20mg/L; TP≤1mg/L.

In particular, the chemical oxygen demand (COD) of the fungus residue suspension is 20000-30000 mg/L, preferably 22000-25000 mg/L.

The solid content of the bacteria residue suspension is 5-8%, which makes the antibiotic content in the bacteria residue suspension lower, reduces its inhibitory effect on the fermentation microorganisms in the anaerobic fermentation device, and ensures that the anaerobic fermentation device contains a large amount of activity Microorganisms, which in turn increase the load on the reactor.

Wherein, using sludge to carry out anaerobic fermentation treatment on the suspension of the bacteria residue includes:

distributing the suspension of the bacteria residue into the granular sludge layer, and performing the first anaerobic fermentation treatment;

Discharging the solid matter in the product after the first anaerobic fermentation treatment;

The other substances in the product are sent to the suspended packing layer containing sludge for the second anaerobic fermentation treatment.

Wherein, the mixture of biogas and water obtained through the first anaerobic fermentation treatment is lifted to the gas-liquid separation device by using the riser tube.

Wherein, a plurality of water distribution pipes are used to form the suspension of fungus residue into a swirling flow rotating around the axis, so that the suspension of fungus residue can be distributed into the sludge of the granular sludge layer.

Because the suspension of bacteria residue is distributed into the sludge of the granular sludge layer in the form of swirling flow, due to the hydraulic action, the sludge located above the water distribution device is driven to rotate and agitate it, so that the bottom of the tank is formed. The strong swirling mass transfer state increases the contact area between the sludge and the bacterial residue suspension, improves the mass transfer efficiency, strengthens the biochemical reaction efficiency, and is conducive to the discharge of generated biogas.

In particular, the first anaerobic fermentation treatment is carried out on the suspension of bacterial residue by using granular sludge. The granular sludge contains a large number of active microorganisms. Most of the organic matter in the bacterial residue is degraded here and converted into biogas. The generated biogas It forms a three-phase mixture with water and solids such as sludge and fungal residue.

In particular, the three-phase mixture is separated using a three-phase separator.

Wherein, the fermentation temperature of the first anaerobic fermentation treatment is 30-35°C, preferably 33-35°C.

In particular, the concentration of granular sludge in the first anaerobic fermentation treatment process is 6.9-7.6 kg VSS·m ^-3 , preferably 7.0-7.4 kg VSS·m ^-3 .

In particular, the volume exchange rate of the first anaerobic fermentation treatment reactor is 10-20%, preferably 12-18%, more preferably 15%.

In particular, the upper end of the riser is located at the bottom of the gas-liquid separation device, and the lower end is located at the top of the three-phase separator, which is used to elevate the mixture of biogas and liquid obtained through the first anaerobic fermentation treatment to the The gas-liquid separation device.

Among them, part of the separated biogas rises through the suspended packing layer and enters the gas-liquid separation device, and the other part directly enters the gas-liquid separation device through the upflow tube. While the biogas rises, the liquid obtained through the first anaerobic fermentation treatment is lifted to the gas-liquid separation device. separation device.

In particular, the degraded fungus residue of the organic matter is regularly discharged.

In particular, the rest of the bacterial residue suspension that has not been degraded by the granular sludge enters the suspended filler layer containing the sludge, and it is subjected to a second anaerobic fermentation treatment to further degrade the organic matter therein.

In particular, polyethylene suspension filler is selected as the filler, and other fillers are suitable for the present invention.

The polyethylene filler is in the shape of teeth, with high porosity, large specific surface area and good suspension, which can effectively trap microorganisms and suspended solids.

After the suspension of bacteria residue is treated by the second anaerobic fermentation, the remaining organic matter in it is further degraded to generate biogas, which rises into the gas-liquid separation device.

The biogas and liquid that rise to the gas-liquid separation device are separated therein, and the separated biogas is transported to the biogas collection device for purification and collection, and the separated liquid is refluxed so that the sludge can be depleted again. Oxygen fermentation treatment.

Another aspect of the present invention provides a treatment equipment for antibiotic scum, comprising:

The slag water generating device is used to generate a suspension of bacterial slag mixed with antibiotic scum and water in proportion;

An anaerobic fermentation device, which is used to use sludge to perform anaerobic fermentation treatment on the bacterial residue suspension from the residue water generating device to obtain a gas-liquid mixture in which antibiotics are degraded;

A gas-liquid separation device located above the anaerobic fermentation device, used to separate the gas-liquid mixture to obtain biogas for delivery to the biogas collection device and liquid returned to the bottom of the anaerobic fermentation device;

A biogas collection device, used to purify and collect the biogas separated by the anaerobic fermentation device;

Wherein, the antibiotic slag treatment equipment also includes an upflow pipe arranged between the gas-liquid separation device and the anaerobic fermentation device, for lifting the gas-liquid mixture obtained through anaerobic fermentation treatment to the Gas-liquid separation device.

Wherein, the bacterium residue suspension that the described generation antibiotic bacterium slag mixes with water in proportion comprises:

Adding 5-8 parts by weight of fungus residue and 92-95 parts by weight of water into the slag water generating device to obtain a mixed solution;

The mixed solution is stirred to obtain the suspension of the fungus residue.

The solid content of the bacteria residue suspension is 5-8%, which makes the antibiotic content in the bacteria residue suspension lower, reduces its inhibitory effect on the fermentation microorganisms in the anaerobic fermentation device, and ensures that the anaerobic fermentation device contains a large amount of activity Microorganisms, which in turn increase the load on the reactor.

Wherein, the slag water generating device further includes a stirrer arranged on its upper part, which is used for stirring the antibiotic scum and water added therein to make them evenly mixed to obtain a suspension of scum.

Wherein, the anaerobic fermentation device comprises:

The tank body is used to receive the suspension of bacterial residue from the slag water generating device and provide an anaerobic fermentation treatment place;

The water distributing device located at the bottom of the tank body is used for distributing the suspension of bacterial residue from the slag water generating device into the anaerobic fermentation device;

The first reaction chamber located above the water distribution device is used for performing the first anaerobic fermentation treatment on the suspension of the bacteria residue;

The second reaction chamber located above the first reaction chamber is used for performing a second anaerobic fermentation treatment on the suspension of fungus residue after the first anaerobic fermentation treatment.

Wherein, the tank body is a cylinder, and other shapes such as cuboid, cube, etc. are applicable to the present invention.

In particular, a base is provided at the bottom of the tank for fixing the tank so that it is parallel to the ground.

In particular, the base can adjust the height of the tank up and down.

Wherein, the water distribution device is located at the bottom of the tank body of the anaerobic fermentation device, including:

The water inlet pipe is connected with the slag water generating device, and is used to introduce the bacterial slag suspension in the slag water generating device into the anaerobic fermentation device;

A plurality of water distribution pipes connected with the water inlet pipe make the suspension of fungus residue form a swirling flow around the axis, so that the suspension of fungus residue can be distributed into the sludge of the granular sludge layer.

In particular, one end of the water inlet pipe is located at the bottom of the tank of the anaerobic fermentation device, and the other end passes through the tank and is connected to the slag water generating device for introducing the suspension of bacteria residue in the slag water generating device into The anaerobic fermentation device.

In particular, the water distribution pipe is vertically connected to the water inlet pipe and parallel to the bottom surface of the tank body.

In particular, the water distribution pipe is an L-shaped water distribution pipe, one end connected to the water inlet pipe is a water inlet, and one end of the water outlet is bent, so that the fungus residue suspension flowing out of the water distribution pipe enters the drain in a swirling state. The oxygen fermentation device fully contacts the sludge above the water distribution device and performs anaerobic fermentation treatment on it.

Since the suspension of bacterial residue enters the anaerobic fermentation device in the form of swirling flow, the sludge above the water distribution device is driven to rotate due to hydraulic action, and agitation is formed on it, so that the bottom of the tank forms a strong swirling mass transfer state, The contact area between the sludge and the bacteria residue suspension is increased, the mass transfer efficiency is improved, the biochemical reaction efficiency is strengthened, and it is beneficial to the discharge of generated biogas.

Wherein, the first reaction chamber includes:

The granular sludge layer above the water distribution device is used to mix with the suspension of bacteria residue from the water distribution device and perform the first anaerobic fermentation treatment to obtain biogas, liquid and bacteria degraded by its antibiotics. Slag and sludge form a three-phase mixture;

The three-phase separator located above the sludge layer is used for separating the fermented three-phase mixture.

In particular, the ratio of the height of the granular sludge layer to the tank body is 0.3-0.5:1.

In particular, the three-phase separator is fixed by connecting with embedded parts welded on the inner wall of the tank, which can be connected by welding or bolts.

In particular, the first anaerobic fermentation treatment is carried out on the suspension of bacterial residue by using granular sludge. The granular sludge contains a large number of active microorganisms. Most of the organic matter in the bacterial residue is degraded here and converted into biogas. The generated biogas It forms a three-phase mixture with water and solids such as sludge and fungal residue.

In particular, the three-phase mixture is separated by a three-phase separator.

Among them, part of the separated biogas rises through the second reaction chamber and enters the gas-liquid separation device, and the other part directly enters the gas-liquid separation device through the upflow tube. When the biogas rises, the liquid obtained through the first anaerobic fermentation treatment is raised to Gas-liquid separation device.

In particular, the first reaction chamber also includes a slag discharge pipe arranged between the sludge layer and the three-phase separator, which regularly discharges the fungus slag after anaerobic fermentation treatment in the tank to continuously add New suspension of fungal residue to be treated.

Wherein, the second reaction chamber includes:

The suspended packing layer, which contains activated sludge, performs the second anaerobic fermentation treatment on the suspension of bacteria residue from the first reaction chamber to further degrade the organic matter therein;

An overflow weir located above the suspended packing layer is used to intercept and discharge the liquid produced by the second anaerobic fermentation treatment;

The gas collecting pipe above the overflow weir, the upper end of which is connected to the gas-liquid separation device, is used to transport the biogas generated in the anaerobic fermentation device to the gas-liquid separation device;

Wherein, the second reaction chamber further includes a first partition and a second partition fixed inside the tank body, and the packing layer is located between the first partition and the second partition.

In particular, the filler is polyethylene suspension filler added with certain active substances, and other fillers are suitable for the present invention.

The polyethylene filler is in the shape of teeth, with high porosity, large specific surface area and good suspension, which can effectively trap microorganisms and suspended solids.

The suspension of bacteria residue is firstly treated by anaerobic fermentation in the first reaction chamber, most of the antibiotics are completely degraded to generate biogas or long-chain molecules are degraded into short-chain molecules, and the remaining suspension of bacteria residue that has not been degraded passes through a three-phase separator Then continue to rise into the second reaction chamber, where it fully contacts with the biofilm attached to the filler and further degrades the organic matter in it, so that it can be further degraded to generate biogas.

The suspended packing layer not only performs the second anaerobic fermentation treatment on the suspension of the bacteria residue, but also can filter the suspension of the bacteria residue, so that the solid substances such as the bacteria residue in it are intercepted, and the liquid in the product flows into the liquid above the suspension filler layer. overflow weir.

Wherein, the second reaction chamber further includes an outlet pipe located at the bottom edge of the overflow weir, which is used to discharge the liquid intercepted by the overflow weir out of the anaerobic fermentation device in time.

Wherein, the gas-liquid separation device also includes a return pipe, the upper end of which is located at the bottom of the gas-liquid separation device, and the lower end directly reaches the bottom of the tank body of the anaerobic fermentation device, which is used to transfer the liquid from the gas-liquid separation device Return to the bottom of the anaerobic fermentation device, so that the sludge can be used for anaerobic fermentation treatment again, and the internal circulation of the mixed liquor is realized.

Wherein, the upper end of the riser tube is located at the bottom of the gas-liquid separation device, and the lower end is located at the top of the three-phase separator, which is used to lift the gas-liquid mixture formed by the biogas and liquid separated by the three-phase separator. to the gas-liquid separation device.

The suspension of bacteria residue is firstly degraded by the granular sludge, and most of the substances are degraded to produce biogas. After the biogas is separated by the three-phase separator, part of the biogas rises through the second reaction chamber and enters the gas-liquid separation device, while most of the biogas passes through the upflow tube. Directly enter the gas-liquid separation device without passing through the second reaction chamber, avoiding the interception of part of the biogas passing through the second reaction chamber, resulting in waste of biogas due to incomplete collection, and increasing the yield of biogas.

Wherein, a biogas pipe is provided on the top of the gas-liquid separation device, which is connected with the biogas collection device.

After the gas-liquid mixture is lifted to the gas-liquid separation device, the separation process is carried out to obtain the biogas to be transported to the biogas collection and treatment device and the liquid returned to the input end of the anaerobic fermentation device, and the biogas is transported to the biogas collection device through the biogas pipe for Purify and collect for production and daily use.

The working process and working principle of the antibiotic slag treatment equipment of the present invention are as follows:

First, the antibiotic scum and water are added in proportion to the slag water generating device, stirred by a stirrer to make it evenly mixed, and a suspension of scum with moderate solid content is obtained.

Next, the bacteria residue suspension enters the anaerobic fermentation device through the water distribution device. Since the water distribution pipe of the water distribution device is an L-shaped water distribution pipe, the bacteria residue suspension flowing out of the water distribution pipe enters the anaerobic fermentation device in a swirling state. The fermentation device is in full contact with the granular sludge located above the water distribution device, and it is subjected to anaerobic fermentation treatment; here, most of the antibiotics in the suspension of bacteria residues are degraded and converted into biogas, and the generated biogas undergoes the first reaction After the three-phase separator in the chamber is separated, part of it rises to the gas-liquid separation device through the upflow tube, and part of it rises to the gas-liquid separation device through the second reaction chamber through the gas collection pipe. The liquid is lifted to the second reaction chamber and the gas-liquid separation device, while the bacterial residue and sludge after anaerobic fermentation treatment in the first reaction chamber are intercepted, continue to react in the first reaction chamber, and are regularly discharged from the slag discharge pipe.

The mixed liquid rising to the second reaction chamber has a lower flow rate and sludge concentration than the first reaction chamber, where the remaining organic matter in the mixed liquid is further degraded by the sludge attached to the suspended packing layer in the second reaction chamber and Biogas and clear liquid are generated, and the generated biogas rises to the gas-liquid separation device with the gas collecting pipe, and the liquid is intercepted by the overflow weir and then flows out of the anaerobic fermentation device with the outlet pipe.

The gas-liquid mixture rising into the gas-liquid separation device is separated in the gas-liquid separation device, and the biogas is transported to the biogas collection device through the biogas pipe for purification and collection for production and domestic use, and the liquid returns to the biogas collection device through the return pipe. The bottom of the anaerobic fermentation device is mixed with the suspension of the bacteria residue, so that the sludge can be used for anaerobic fermentation treatment again, and the internal circulation of the mixed solution is realized.

Advantage of the present invention and beneficial technical effect are as follows:

1. The antibiotic slag treatment method and equipment of the present invention mix the antibiotic slag and water to prepare a suspension of the slag and perform anaerobic fermentation treatment on it, which reduces the inhibitory effect of harmful substances such as antibiotics on anaerobic fermentation microorganisms, and improves the The content of active microorganisms in the fermentation process improves the processing efficiency and speed of the fungus residue.

2. The antibiotic slag treatment method and equipment of the present invention make the slag suspension enter the anaerobic fermentation device in a swirling flow, drive the sludge above the water distribution device to rotate, and form a stirring effect on it, so that the bottom of the tank body forms a strong The swirling mass transfer state increases the contact area between the sludge and the bacterial residue suspension, improves the mass transfer efficiency, strengthens the biochemical reaction efficiency, and is conducive to the discharge of generated biogas.

3. The antibiotic slag treatment method and equipment of the present invention are provided with upflow tubes, and part of the methane produced by the first anaerobic fermentation process rises through the second reaction chamber and enters the gas-liquid separation device, while most of the biogas directly enters through the upflow tubes. The gas-liquid separation device does not pass through the second reaction chamber, avoiding the interception of part of the biogas passing through the second reaction chamber, resulting in waste of biogas due to incomplete collection, and increasing the yield of biogas.

4. The suspended sludge concentration of the mixed liquid in the second reaction chamber of the antibiotic slag treatment equipment of the present invention is lower than that in the first reaction chamber, which is conducive to the attachment and growth of microorganisms on the filler and effectively shortens the film-hanging time.

5. The film-coated filler layer of the antibiotic slag treatment equipment of the present invention can realize the dual functions of organic matter degradation and solid-liquid separation at the same time, so that the slag suspension can be better treated in depth and the effluent quality can be improved.

6. The antibiotic residue treatment method and equipment of the present invention carry out anaerobic fermentation treatment on the suspension of antibiotic residue, which has good treatment effect and high treatment efficiency, can greatly reduce the COD in the effluent, and at the same time, the retention and Effective mass transfer and increased gas production; after being treated by the method and device of the present invention, the chemical oxygen demand (COD) of the biogas slurry can be reduced to 3345-3670 mg/L, and the COD degradation rate can reach 83.6 -84%, the gas production of antibiotic residues can reach 25.29-28.87m ³ /t.

Description of drawings

Fig. 1 is the structural representation of antibiotic slag treatment equipment of the present invention;

Fig. 2 is the top view of the water distribution device of the antibiotic slag treatment equipment of the present invention;

Explanation of reference signs:

1. Slag water generating device; 2. Anaerobic fermentation device; 3. Gas-liquid separation device; 4. Biogas collection device; 5. Upflow pipe; 6. Tank body; 7. First reaction chamber; 8. Water distribution device 9, water inlet pipe; 10, water distribution pipe; 11, granular sludge layer; 12, three-phase separator; 13, second reaction chamber; 14, suspended packing layer; 15, first partition; 16, second partition 17, overflow weir; 18, outlet pipe; 19, gas collecting pipe; 20, return pipe; 21, slag discharge pipe; 22, biogas pipe. the

Detailed ways

The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:

As shown in FIG. 1 , the antibiotic slag treatment equipment of the present invention includes a slag water generation device 1 , an anaerobic fermentation device 2 , a gas-liquid separation device 3 and a biogas collection device 4 .

Wherein, the anaerobic fermentation device 2 comprises a tank body 6 and a water distribution device 8 arranged from bottom to top in the tank body, a first reaction chamber 7 and a second reaction chamber 13; the tank body 6 in the present invention is a cylinder; as As shown in Figure 2, the water distribution device 8 is located at the bottom of the tank body 6, and includes a water inlet pipe 9 and a plurality of water distribution pipes 10 connected thereto. One end of the water inlet pipe 9 passes through the tank body 6 and communicates with the slag water generating device 1, which The other end is located at the bottom of the tank of the anaerobic fermentation device and vertically connected to the water distribution pipe 10, the water distribution pipe 10 is an L-shaped water distribution pipe; the first reaction chamber 7 is located above the water distribution device 8, including the top of the water distribution device The granular sludge layer 11, the three-phase separator 12 above the granular sludge layer and the slagging pipe 21 between the sludge layer and the three-phase separator; the second reaction chamber 13 includes The first partition 15 on the top, the second partition 16, the suspended packing layer 14 between the first partition and the second partition, the overflow weir 17, the outlet pipe 18 at the bottom edge of the overflow weir and the Gas header 19 above the flow weir.

The gas-liquid separation device 3 is located above the anaerobic fermentation device 2, and the bottom of the gas-liquid separation device 3 is provided with a return pipe 20, the upper end of which is positioned at the bottom of the gas-liquid separation device 3, and the lower end directly reaches the anaerobic fermentation device 2 tank body bottom of. the

The top of the gas-liquid separation device is provided with a biogas pipe 22 connected to the biogas collection device 4 .

The upper end of the riser tube 5 is located at the bottom of the gas-liquid separation device 3 , and the lower end is located at the top of the three-phase separator 12 .

First, the antibiotic scum and water are added in proportion to the slag water generating device 1, and stirred by a stirrer to make it evenly mixed to obtain a suspension of scum with a moderate solid content.

Next, the bacteria residue suspension enters the anaerobic fermentation device 2 through the water distribution device 8. Since the water distribution pipe 10 of the water distribution device 8 is an L-shaped water distribution pipe, the bacteria residue suspension flowing out of the water distribution pipe is in a swirling state and enters anaerobic fermentation. The fermentation device 2 is in full contact with the granular sludge layer 11 located above the water distribution device, and is subjected to anaerobic fermentation treatment; here, most of the antibiotics in the suspension of bacteria residues are degraded and converted into biogas, and the generated biogas is passed through After the three-phase separator 12 of the first reaction chamber 7 is separated, part of it rises to the gas-liquid separation device 3 through the riser 5, and the other part rises to the gas-liquid separation device 3 through the second reaction chamber 13 through the gas collector 19, and the biogas While ascending, the mixed liquid produced in the first reaction chamber 7 is lifted to the second reaction chamber 13 and the gas-liquid separation device 3, and the bacteria residue and sludge after the anaerobic fermentation treatment in the first reaction chamber 7 are intercepted. A reaction chamber continues to react and is discharged from the slag discharge pipe 21 at regular intervals.

The mixed solution that rises to the second reaction chamber 13 has a flow rate and a sludge concentration less than that of the first reaction chamber 7, where the remaining organic matter in the mixed solution is absorbed by the sludge attached to the suspended packing layer 14 in the second reaction chamber 13. The mud is further degraded to generate biogas and liquid, and the generated biogas rises to the gas-liquid separation device 3 with the gas collecting pipe 19, and the liquid flows out of the anaerobic fermentation device 2 with the outlet pipe 18 after being intercepted by the overflow weir 17.

Finally, the gas-liquid mixture that rises to the gas-liquid separation device 3 is separated in the gas-liquid separation device, and the biogas is transported to the biogas collection device 4 through the biogas pipe 22 for purification and collection for production and domestic use. Return to the bottom of the anaerobic fermentation device 2 through the return pipe 20, and mix with the suspension of the bacteria residue, so that the sludge can be used for anaerobic fermentation treatment again, and the internal circulation of the mixed solution is realized.

The gentamicin slag used in the embodiments of the present invention is taken from a pharmaceutical company in Nanyang. 80-85% antibiotic fermentation residues are applicable to the present invention; the water used to prepare the suspension of bacteria residues is tap water, its chroma≤30; pH: 6.5-7.5; COD≤100mg/L; SS≤30mg/L; NH ₃ -N≤20mg/L; TP≤1mg/L; Granular sludge comes from a paper mill sewage treatment IC tank with relatively high activity anaerobic granular sludge, TS is 19.08%, VS accounts for 87.12% of TS.

Example 1

Take by weighing 0.75kg gentamicin bacterium slag and join in the slag water generating device 1, then pass into water in the slag water generating device 1, start the stirrer, it is stirred, after it is fully mixed, stop stirring, prepare The chemical oxygen demand (COD) of the gentamicin slag suspension with a solid content of 6% is 21455 mg/L.

Distribute the prepared gentamicin slag suspension into the anaerobic fermentation device 2 through the water distribution device 8, wherein the concentration of the anaerobic granular sludge in the anaerobic fermentation tank is 7.14kg VSS·m ^-3 , the fermentation temperature The temperature is 34°C, and the volume exchange rate of the reactor is 15%.

The gentamicin residue is anaerobically fermented in the anaerobic fermentation device to generate biogas, and the biogas enters the gas-liquid separation device 3 through the gas collecting pipe 19 and the riser pipe 5, and enters the biogas collection device 4 after being separated by the gas-liquid separation device 3. Purify and collect the biogas produced by fermentation; in addition to producing biogas, anaerobic fermentation also generates biogas slurry and biogas residue.

The biogas collected by the biogas collection device is 21.2L, and the gas production of antibiotic residue is 28.27m ³ /t, that is, 28.27m ³ of biogas can be produced per ton of gentamicin residue after treatment; biogas slurry and biogas residue can be used To make organic fertilizer, the remaining sludge in the fermentation tank can be sold directly without secondary pollution; the chemical oxygen demand COD of the biogas slurry is 3460mg/L, compared with the gentamicin slag suspension, the COD degradation The rate is 83.9%.

Example 2

Take by weighing 0.87kg gentamicin bacterium slag and join in the slag water generating device 1, then pass into water in the slag water generating device 1, start the stirrer, it is stirred, after it is fully mixed, stop stirring, prepare The chemical oxygen demand (COD) of the gentamicin slag suspension with a solid content of 7% is 22080 mg/L.

Distribute the prepared gentamicin slag suspension into the anaerobic fermentation device 2 through the water distribution device 8, wherein the concentration of the anaerobic granular sludge in the anaerobic fermentation tank is 7.0kg VSS·m ^-3 , the fermentation temperature The temperature is 33°C, and the volume exchange rate of the reactor is 18%.

The gentamicin residue is anaerobically fermented in the anaerobic fermentation device to generate biogas, and the biogas enters the gas-liquid separation device 3 through the gas collecting pipe 19 and the riser pipe 5, and enters the biogas collection device 4 after being separated by the gas-liquid separation device 3. Purify and collect the biogas produced by fermentation; in addition to producing biogas, anaerobic fermentation also generates biogas slurry and biogas residue.

The biogas collected by the biogas collection device is 22L, and the gas production of antibiotic residue is 25.29m ³ /t, that is, 25.29m ³ of biogas can be produced per ton of gentamicin residue after treatment; biogas slurry and biogas residue can be used To make organic fertilizer, the remaining sludge in the fermentation tank can be sold directly without secondary pollution; the COD of the biogas slurry is 3595mg/L, and the COD degradation rate is lower than that of the gentamicin slag suspension. was 83.7%.

Example 3

Take by weighing 0.8kg gentamicin bacterium slag and join in the slag water generating device 1, then pass into water in the slag water generating device 1, start the stirrer, it is stirred, after it is fully mixed, stop stirring, prepare The gentamicin slag suspension with a solid content of 6.5% has a chemical oxygen demand (COD) of 21705 mg/L.

Distribute the prepared gentamicin slag suspension into the anaerobic fermentation device 2 through the water distribution device 8, wherein the concentration of the anaerobic granular sludge in the anaerobic fermentation tank is 7.40kg VSS·m ^-3 , the fermentation temperature The temperature is 35°C, and the volume exchange rate of the reactor is 12%.

The gentamicin residue is anaerobically fermented in the anaerobic fermentation device to generate biogas, and the biogas enters the gas-liquid separation device 3 through the gas collecting pipe 19 and the riser pipe 5, and enters the biogas collection device 4 after being separated by the gas-liquid separation device 3. Purify and collect the biogas produced by fermentation; in addition to producing biogas, anaerobic fermentation also generates biogas slurry and biogas residue.

The biogas collected by the biogas collection device is 23L, and the gas production of antibiotic residue is 28.75m ³ /t, that is, 28.75m ³ of biogas can be produced per ton of gentamicin residue after treatment; biogas slurry and biogas residue can be used To make organic fertilizer, the remaining sludge in the fermentation tank can be sold directly without secondary pollution; the COD of the biogas slurry is 3495mg/L, and the COD degradation rate is lower than that of the gentamicin slag suspension. was 83.9%.

Example 4

Take by weighing 1.0kg gentamicin bacterium slag and join in the slag water generating device 1, then pass into water in the slag water generating device 1, start the stirrer, it is stirred, after it is fully mixed, stop stirring, prepare The chemical oxygen demand (COD) of the gentamicin slag suspension with a solid content of 8% is 22880 mg/L.

Distribute the prepared gentamicin slag suspension into the anaerobic fermentation device 2 through the water distribution device 8, wherein the concentration of the anaerobic granular sludge in the anaerobic fermentation tank is 6.9kg VSS·m ^-3 , the fermentation temperature The temperature is 30°C, and the volume exchange rate of the reactor is 10%.

The gentamicin residue is anaerobically fermented in the anaerobic fermentation device to generate biogas, and the biogas enters the gas-liquid separation device 3 through the gas collecting pipe 19 and the riser pipe 5, and enters the biogas collection device 4 after being separated by the gas-liquid separation device 3. Purify and collect the biogas produced by fermentation; in addition to producing biogas, anaerobic fermentation also generates biogas slurry and biogas residue, which is discharged through the outlet pipe 18 and biogas residue is discharged through the slag discharge pipe 21 at regular intervals.

The biogas collected by the biogas collection device is 26.1L, and the gas production of antibiotic residue is 26.1m ³ /t, that is, 26.1m ³ of biogas can be produced per ton of gentamicin residue after treatment; biogas slurry and biogas residue can be used To make organic fertilizer, the remaining sludge in the fermentation tank can be sold directly without secondary pollution; the chemical oxygen demand COD of the biogas slurry is 3670mg/L, compared with the gentamicin slag suspension, the COD degradation The rate is 84.0%.

Example 5

Take by weighing 0.62kg gentamicin bacterium slag and join in the slag water generating device 1, then pass into water in the slag water generating device 1, start the stirrer, it is stirred, after it is fully mixed, stop stirring, prepare The gentamicin slag suspension with a solid content of 5% has a chemical oxygen demand (COD) of 20405 mg/L.

Distribute the prepared gentamicin slag suspension into the anaerobic fermentation device 2 through the water distribution device 8, wherein the concentration of the anaerobic granular sludge in the anaerobic fermentation tank is 7.6kg VSS·m ^-3 , the fermentation temperature The temperature is 32°C, and the volume exchange rate of the reactor is 20%.

The gentamicin residue is anaerobically fermented in the anaerobic fermentation device to generate biogas, and the biogas enters the gas-liquid separation device 3 through the gas collecting pipe 19 and the riser pipe 5, and enters the biogas collection device 4 after being separated by the gas-liquid separation device 3. Purify and collect the biogas produced by fermentation; in addition to producing biogas, anaerobic fermentation also generates biogas slurry and biogas residue.

The biogas collected by the biogas collection device is 17.9L, and the gas production of antibiotic residue is 28.87m ³ /t, that is, 28.87m ³ of biogas can be produced per ton of gentamicin residue after treatment; biogas slurry and biogas residue can be used To make organic fertilizer, the remaining sludge in the fermentation tank can be sold directly without secondary pollution; the chemical oxygen demand COD of the biogas slurry is 3345mg/L, compared with the gentamicin slag suspension, the COD degradation The rate is 83.6%.

It should be understood that the above embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. In addition, it should be understood that after reading the teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Claims (10)

1. A treatment method for antibiotic scum, characterized in that, comprising: Mixing antibiotic residues with water in proportion to obtain suspensions of bacteria residues; performing anaerobic fermentation treatment on the suspension of bacteria residue by using sludge to obtain a gas-liquid mixture in which antibiotics have been degraded; After the gas-liquid mixture is separated and treated by a gas-liquid separation device, the separated biogas is transported to a biogas collection device, and the separated liquid is refluxed so that the sludge can be used for anaerobic fermentation treatment; Wherein, the biogas collection device purifies and collects the separated biogas; Wherein, the gas-liquid mixture obtained through anaerobic fermentation treatment is lifted to the gas-liquid separation device by using a riser tube. 2. antibiotic scum treatment method as claimed in claim 1, is characterized in that, described antibiotic scum and water are mixed in proportion to obtain scum suspension comprising: adding 5-8 parts by weight of fungus residue to water with 92-95 parts by weight to obtain a mixed solution; The mixed solution is stirred to obtain a suspension of fungus residue with a solid content of 5-8%. 3. antibiotic slag treatment method as claimed in claim 2, is characterized in that, utilizes sludge to carry out anaerobic fermentation process to described bacterium slag suspension and comprises: distributing the suspension of the bacteria residue into the granular sludge layer, and performing the first anaerobic fermentation treatment; Discharging the solid matter in the product after the first anaerobic fermentation treatment; The other substances in the product are sent to the suspended packing layer containing sludge for the second anaerobic fermentation treatment. 4 . The method for treating antibiotic scum as claimed in claim 3 , wherein the mixture of biogas and water obtained through the first anaerobic fermentation treatment is lifted to the gas-liquid separation device by using the riser tube. 5. The antibiotic slag treatment method according to claim 3, characterized in that, using a plurality of water distribution pipes to form the slag suspension into a swirling flow around the axis, so that the slag suspension is distributed into the In the sludge of the granular sludge layer. 6. A treatment equipment for antibiotic scum, characterized in that it comprises: The slag water generating device is used to generate a suspension of bacterial slag mixed with antibiotic scum and water in proportion; An anaerobic fermentation device, which is used to use sludge to perform anaerobic fermentation treatment on the bacterial residue suspension from the residue water generating device to obtain a gas-liquid mixture in which antibiotics are degraded; A gas-liquid separation device located above the anaerobic fermentation device, used to separate the gas-liquid mixture to obtain biogas for delivery to the biogas collection device and liquid returned to the bottom of the anaerobic fermentation device; A biogas collection device, used to purify and collect the biogas separated by the anaerobic fermentation device; Wherein, the antibiotic slag treatment equipment also includes an upflow pipe arranged between the gas-liquid separation device and the anaerobic fermentation device, for lifting the gas-liquid mixture obtained through anaerobic fermentation treatment to the Gas-liquid separation device. 7. antibiotic slag treatment equipment as claimed in claim 6, is characterized in that, the bacterium suspension that described generation antibiotic slag mixes with water in proportion comprises: Adding 5-8 parts by weight of fungus residue and 92-95 parts by weight of water into the slag water generating device to obtain a mixed solution; The mixed solution is stirred to obtain the suspension of the fungus residue. 8. antibiotic scum treatment equipment as claimed in claim 6, is characterized in that, described anaerobic fermentation device comprises: The tank body is used to receive the suspension of bacterial residue from the slag water generating device and provide an anaerobic fermentation treatment place; The water distributing device located at the bottom of the tank body is used for distributing the suspension of bacterial residue from the slag water generating device into the anaerobic fermentation device; The first reaction chamber located above the water distribution device is used for performing the first anaerobic fermentation treatment on the suspension of the bacteria residue; The second reaction chamber located above the first reaction chamber is used for performing a second anaerobic fermentation treatment on the suspension of fungus residue after the first anaerobic fermentation treatment. 9. The antibiotic slag treatment equipment as claimed in claim 8, wherein the upper end of the riser is positioned at the bottom of the gas-liquid separation device, and the lower end is positioned at the top of the three-phase separator for passing through the first The mixture of biogas and liquid obtained from anaerobic fermentation treatment is lifted to the gas-liquid separation device. 10. The antibiotic bacteria residue treatment equipment as claimed in claim 8, wherein the water distribution device comprises: The water inlet pipe is connected with the slag water generating device, and is used to introduce the bacterial slag suspension in the slag water generating device into the anaerobic fermentation device; A plurality of water distribution pipes connected with the water inlet pipe make the suspension of fungus residue form a swirling flow around the axis, so that the suspension of fungus residue can be distributed into the sludge of the granular sludge layer.