70results about How to "The reduction effect is obvious" patented technology

The invention discloses a 'technique for conditioning sludge by using the synergic action of Fenton reagent and polyacrylamide', and mainly aims to overcome the defects in sludge dehydration conditioning of urban sewage treatment plants at present. The invention provides a sludge conditioning combined technical process which can effectively degrade organic substances, realize sludge reduction, effectively release combined water and cell internal water difficult to be dehydrated in the sludge and improve the dehydration performance of the sludge. In the technique, the oxidizing action of the Fenton reagent and the strong flocculation of CPAM (cationic polyacrylamide) are fully combined and used to enhance the dehydration performance of the sludge and improve the solid-liquid separation ratio in sludge dehydration. Through conditioning, the water content of the sludge after centrifugal dehydration is reduced from 87.7 percent to 79.3 percent, and the mud cake output is reduced from 0.218t / m<3> to 0.128t / m<3>.

The invention is named as 'a joint-conditioning dehydration method for sludge', belonging to the technical field of environmental engineering and sludge treatment. The joint-conditioning dehydration method comprises the following steps of: adding H202 and FeSO4 into the sludge (with pH being equal to 5) acidified by mineral acid, degrading organic matter by virtue of strong oxidation of a Fenton reagent, and dissolving and cracking microbial cells and extracellular polymeric substances in the sludge; adding a surfactant CTMAB (Cetyl Trimethyl Ammonium Bromide) into the sludge to reduce the surface tension of the sludge and change the surface characteristics of the sludge, and transforming a part of interstitial water into free water; and flocculating sludge particulates with disperse structure, small particle diameter and large specific surface area by virtue of flocculation action of polyacrylamide (CPAM) to the sludge particulates. After the sludge is subjected to joint conditioning of the Fenton reagent, the surfactant and the CPAM, the moisture content of the sludge after being centrifugally dewatered is reduced to 78.2% from 87.7%, and the output of mud cakes is reduced to 0.115t / m<3> from 0.218t / m<3>, therefore, the dehydration property of the sludge can be improved remarkably, the investment and operation costs are reduced effectively, and an ideal sludge reduction goal is reached.

The invention discloses a processing method for utilizing heavy metal to restore plant residues, which comprises cleaning and draining the plant residues after restoration, enabling granularity of debris to be between 2mm and 8mm after smashing, mixing plant debris and a fixing agent according to a proportion of mass ratio of 2-5:1, ashing for 4-6h under the condition of 400-800 DEG C, spraying gas generated by ashing, and mixing ash generated after ashing into corresponding metal ores to perform further smelting and recycling or use acid spray to purify heavy metal by-products. The processing method is large in processing quantity and remarkable in reduction, plant quality loss accounts for 85-98% of the total mass, and volatilization quantity of the heavy metal is reduced by 80-90%. The processing method is low in cost, reduces secondary pollution to the environment, and has good practical application prospects in the aspect of metal recycling.

The invention discloses a method for extracting humic acid liquid fertilizer with rich trace elements from sludge. The method comprises the following steps: (1) adding nitric acid into the sludge, stirring for 3 hours, centrifugating, and collecting the extract E1; (2) adding sodium hydroxide to the residual precipitate in step (1), stirring to extract for 6 hours, centrifugating, and collecting the extract E2; (3) adding sodium hydroxide into the residual precipitate in step (2), stirring to extract for 6 hours, mechanically dehydrating under high pressure, and collecting the extract E3; and(4) and mixing E1 obtained in step (1) and E2 obtained in step (2), and concentrating the mixed solution to obtain the humic acid liquid fertilizer. The method not only can complete the further dehydration process of sludge so as to reduce the water content of sludge from about 80% to less than 40%, but also can effectively extract humic acid, trace elements and other necessary nutritional ingredients for plants from sludge.

The invention discloses a movable type method and device for treatment on desilting and dredging sludge of rivers and lakes. The method comprises the following steps: A, storing sludge inside a temporary cofferdam sludge storage pond which is constructed on the shore of a river or lake; B, hoisting a container in which a sludge dehydration system is integrally mounted to the side of the sludge storage pond; C, pumping sludge into a compartment type film filter press for filter-press dehydration in the sludge dehydration system from the sludge storage pond; D, squeezing by using a squeezing pump; E, transferring the sludge of which the water content is greatly reduced, for later recycling treatment. The device comprises the cofferdam sludge storage pond, the sludge dehydration system and the container for carrying the sludge dehydration system. By adopting the method and device, the water content of sludge can be reduced to be about 40%, then the sludge is transformed into solid without flowing, no pollution is caused in the transformation process, the transferring is flexible, the use is convenient, the circulation use efficiency of equipment is high, and later recycling treatment is facilitated.

The invention belongs to the technical field of design and manufacture of waveguide antennas, and in particular relates to a dual-polarized broadband flat panel array antenna feeding network. The feed network includes polarization separators, and the polarization separators form a basic array distribution of four rows and four columns; the vertical polarization unit includes a first vertical polarization power splitter, a second vertical polarization power splitter, a third a vertical polarization power divider and a fourth vertical polarization power divider; the horizontal polarization unit includes a first horizontal polarization power divider, a second horizontal polarization power divider, a third horizontal polarization power divider and a fourth horizontal polarization power divider Horizontal polarized power splitter; there is a waveguide arm between the two adjacent first vertical polarized power splitters on the second row and the third row for the two input ports of the fourth horizontal polarized power splitter to pass through The gap; the output port of the fourth horizontal polarization power splitter is located in the reserved area between the third row and the fourth row of polarization splitters. The invention has the advantages of compact structure, wide bandwidth and low profile, and can be used as a feed network for broadband dual-polarization antennas.

The invention provides a continuous dewatering and curing integrated system for mud and silt. The system comprises concentration equipment, stirring equipment, dewatering equipment, a sludge feeding pump and an additive feeding pump, wherein the concentration equipment, the stirring equipment and the dewatering equipment are communicated sequentially through pipelines, and the concentration equipment is further connected with the sludge feeding pump and the additive feeding pump through pipelines. The invention further provides a continuous dewatering and curing integrated process for mud and silt. According to the continuous dewatering and curing integrated process for mud and silt, the mud or silt with the water content being 70%-90% can be dewatered, the water content is reduced to 20%-40% in combination with agent modification and mechanical dewatering, the reduction effect is remarkable, the compressive strength is improved, and building mud and river silt can serve as backfilling soil or afforestation soil after being treated.

The present invention belongs to the fields of microorganisms and applications thereof, and specifically discloses a composite micro-organism agent based on bacillus subtilis BS1 and an application thereof. The bacillus subtilis is preserved in China Center for Type Culture Collection and has a preservation number of CCCCC NO:M 2019185. The composite micro-organism agent prepared from the bacillussubtilis strain and saccharomyces cerevisiae, bacillus megaterium and bacillus licheniformis can be used for manure composting of livestock and poultry. The composite micro-organism agent can increase composting temperature in compost, shortens time to reach a high temperature, conducts deodorization, fixes nitrogen, and has significant reduction effects on various antibiotic resistance genes andpathogenic micro-organism in the compost.

The invention relates to a device and a method for extracting a carbon source of a sewage treatment plant from kitchen waste. The device comprises a double-shaft shear type crusher (1), a crushing grating (2), a soaking and stirring barrel (3), a gravity pipe (4) and a screw press (5). The method comprises the following steps that firstly, the kitchen waste is crushed and soaked in hot water, andsqueezing and filtering are carried out on the soaked solid-liquid mixture to obtain the kitchen waste filtrate; and then ferric chloride and lime are added into the kitchen waste filtrate in sequence, coagulation reaction is carried out under stirring, and combined treatment is carried out on the upper-layer kitchen waste filtrate and the urban sewage after precipitation. According to the deviceand method, organic carbon source in the kitchen waste is released by hot water soaking, a part of grease is removed through coagulation, and C / N and C / P of the kitchen waste filtrate are improved; and the kitchen waste filtrate can be used as the carbon source needed by nitrogen and phosphorus removal reaction of the sewage treatment plant, contribution is made to upgrading and transformation ofthe sewage treatment plant, meanwhile, foul smell generation is reduced, and the purpose of recycling the kitchen waste is achieved.

The invention discloses a low-RCS antenna, which comprises an artificial surface plasmon coupling medium and a feeding structure, the feeding structure comprises a monopole antenna and a ground plane,and the monopole antenna is arranged on the ground plane; the artificial surface plasmon coupling medium is arranged on the ground plane; and the artificial surface plasmon coupling medium comprisesa periodic metal cell array and a dielectric substrate, and the periodic metal cell array is arranged on the surface of the dielectric substrate. Thus, the low-RCS antenna provide by the embodiment ofthe present invention adjusts and controls the strong-weak dispersion region in the artificial surface plasmon dispersion curve, so that when the antenna is in the weak dispersion region, electromagnetic waves can be efficiently transmitted and radiated along the coupling medium; and when the antenna is in the strong dispersion region, the electromagnetic waves are strongly absorbed. The antennais simple in structure, adopts a printed circuit board technology to process, and is low in cost and easy to be conformal, and on the premise of ensuring the efficient receiving / transmitting performance, an RCS reduction effect is obvious, and a good RCS reduction effect is achieved even in a relatively large angular domain.

The invention provides a resourceful treatment method for penicillin fungi residues, wherein fungi residues produced during production of penicillin can be treated by adopting the steps of steam inactivation, enhanced pretreatment, mixing and blending, fungi residue blending, anaerobic co-digestion, concentrating and dewatering and the like. According to the invention, a treatment method low in energy consumption, high in efficiency and steady and reliable in effect is adopted, and drug residues in the penicillin fungi residues can be completely removed, thus realizing reduction and harmless treatment of the penicillin fungi residues.

The invention relates to a lake and river sludge dewatering treatment system; the discharging end of a drug diluting and adding machine is connected to a sludge inlet pipeline through a pipeline; the discharging end of the sludge inlet pipeline is connected to the charging end of a sludge conditioning tank; the discharging end of the sludge conditioning tank is connected to the charging end of a sludge storage tank through a pipeline; the discharging end of the sludge storage tank is connected to the charging end of a slurry pump through a pipeline; the discharging end of the slurry pump is connected to the charging end of a chamber type filter press through a pipeline; the discharging end of the chamber type filter press is connected to the charging end of a conveyer through a pipeline; and the air outlet of an air compressor is connected to the air inlet of the chamber type filter press. The sludge dewatering treatment system disclosed by the invention is high in automation degree, high in treatment capacity, good in dewatering effect, low in operation cost, obvious in sludge reducing effect and easy to realize resource utilization of sludge, and therefore, industrialization popularization can be realized.

The invention relates to a waste emulsion quantitative reduction processing technology and apparatus, and is suitable for processing waste emulsion produced in the fields of elevator industry, automobile manufacturing industry, high precision and high-end equipment manufacturing industry, etc. The processing technology comprises the following steps: adding the waste emulsion into a quantitative reduction apparatus, adding acids for demulsification, controlling the amount of the acids according to an abrupt change point of pH change values, skimming upper level floating oil by an oil skimmer, and discharging the lower waste liquid after neutralizing. After processing, the COD removal rate reaches to 85% or higher, and the oil substance removal rate reaches to 92%-98%, and the volume reduction amount of the waste emulsion is higher than 85%. The overall technology can be in automatic control conveniently, is used for realizing quantitative reduction processing, and thetechnology and apparatus have high processing efficiency andareeconomically feasible.

The invention discloses a method for biological treatment of unavailable fresh tobacco leaves by utilizing spodoptera litura, and a material formula. According to the method disclosed by the invention, the unavailable fresh tobacco leaves are creatively utilized for appropriate treatment, then appropriate compatible components are added to prepare a semi-artificial feed for feeding the spodoptera litura till the the larval development stage is completed, then the unavailable fresh tobacco leaves are completely treated, output products are mature larvae and frass of the spodoptera litura, the mature larvae of the spodoptera litura can be used as a high-quality insect protein feed after drying, and the frass can be used as a high-quality organic fertilizer after aerobic composting. The method disclosed by the invention has the advantages that the treatment capacity of the unavailable fresh tobacco leaves is great, the treatment cost is low, the period is short, the treatment of the unavailable fresh tobacco leaves is complete, the reduction effect is obvious, and the production of waste residue, waste gas, waste liquid and other secondary pollution in treatment process is avoided; products after the treatment are insect protein powder and the frass organic fertilizer of the spodoptera litura, and the economic benefits of a treatment plant can be increased.

The invention discloses a sludge carbonization all-in-one machine which comprises a pipeline conveying type heating part and a reaction kettle pressurizing part, wherein the pipeline conveying type heating part comprises a spiral winding type conveying pipeline and a heating device on the exterior of the pipeline; the reaction kettle pressurizing part comprises a high-pressure-resisting reaction kettle body and a pressurizing apparatus. The invention also discloses a sludge dehydration and carbonization method which comprises the following steps: heating and pressurizing to pyrolyze biomass inthe sludge into charcoal; converting internal water into free-state water; dehydrating to obtain charcoal.

The invention discloses a radiation unit of an antenna, and the radiation unit comprises an oscillator radiation circuit board which is provided with oscillator radiation arms arranged in pairs in a printed manner, wherein the width of each oscillator radiation arm is less than a half of the wavelength; an oscillator balun circuit board which is used for supporting the oscillator radiation circuitboard, wherein an oscillator balun is printed on the oscillator balun circuit board, the height of the oscillator balun is less than one fifth of the wavelength, and the oscillator balun is providedwith at least one first slot. Based on the invention, in particular for a 5G-MIMO large-array base station and a micro base station, the radiation unit can improve the overall performance of antennassuch as bandwidth, isolation, gain, cross polarization and the like as a whole, and meanwhile, the size of the antenna cannot be reduced with relatively small performance loss.

The invention discloses an H2S endogenesis cutting-down method and device of a quasi aerobic landfill. The device comprises a reactor shell, an adjusting tank, a recharge pump, a vertical gas guide and exhaust pipe, a plurality of vertical type recharge wells and a horizontal recharge net. A fine sand cover layer, a garbage layer, a gravel layer and a percolate layer are arranged in the shell; the vertical gas guide and exhaust pipe is arranged at the central position of the reactor shell and penetrates through the fine sand cover layer and the garbage layer; the vertical type recharge wells are arranged around the vertical gas guide and exhaust pipe, water outlets of the vertical type recharge wells extend to the positions with different heights in the garbage layer, and top inlets of the vertical type recharge wells are communicated with the adjusting tank through the recharge pump; the horizontal recharge net is arranged in the garbage layer and is communicated with the adjusting tank through the recharge pump. According to different separated areas in the quasi aerobic landfill, target recharge of percolates is carried out, rich iron resources in the landfill are fully utilized, the biological oxidoreduction cycling of iron can be achieved through the physical, chemical and biological process inside the landfill, and therefore the endogenesis cutting-down aim of the H2S can be achieved.

The invention relates to an ozone full-utilization type sludge reduction reaction system. The sludge reduction reaction system comprises a reaction slot, a jet device, an ozone generator and a spray head, wherein the jet device is connected with the reaction slot, the ozone generator is used for supplying ozone into the jet device, and the spray head is communicated with the jet device; and the jet device is connected with the spray head through a booster pump, a mixing tank for receiving jetted matters is arranged below the spray head, and a sludge outlet of the mixing tank is communicated with the reaction slot, so as to form a circulation channel. The system has the beneficial effects that the structure is simple, the occupied area is small, the investment is saved, the operation is simple, the reaction efficiency is high, ozone can be completely utilized, and an ozone decomposer is not used; the sludge reduction effect is remarkable, and the amount of sludge can be reduced by 50%-90% or above; and the system is well compatible with an existing sludge process and can be applied to sludge reduction of sewage treatment plants in large scale.

The invention relates to a sludge reduction reaction system. The sludge reduction reaction system comprises a reaction tank, a submersible sewage pump, a releaser and an ozonizer, wherein the submersible sewage pump and the releaser are arranged in the reaction tank; the ozonizer is arranged outside the reaction tank; the reaction tank is provided with a sludge inlet and a sludge outlet; an ozone outlet of the ozonizer is connected with a gas inlet of the submersible sewage pump; a material flow inlet of the releaser is connected with the submersible sewage pump; the submersible sewage pump sucks sludge and ozone by negative pressure; the sludge and the ozone are mixed and then flow into the releaser; the material flow inlet, an arc-shaped material flow channel connected with the material flow inlet and a material flow orifice are formed in the releaser; the material flow channel is communicated with the orifice; material flows entering the releaser pass through the material flow channel and then are sprayed out by the orifice. The reaction system disclosed by the invention has the advantages of simple structure, small occupied area, investment saving, simple operation and high reaction efficiency; the ozone can be completely utilized, so that the use of an ozone destructor is avoided.

The invention discloses a solid waste pyrogenation and combustion system. The solid waste pyrogenation and combustion system is characterized in that a pyrolysis gas purifying device is firstly connected with a pyrolysis gas draught fan and then is connected with a pyrolysis gas combustor of a boiler after being connected with a pyrolysis gas valve; two stages of smoke recycling openings are formed in the boiler; the first stage of smoke recycling opening is formed before an economizer of a main outlet of the boiler and is connected with a first pyrolysis draught fan; the second stage of smoke recycling opening is formed behind the economizer and is connected with a second pyrolysis draught fan; the first pyrolysis draught fan passes through a first pyrolysis control valve and is then connected with a pyrolysis main control valve; and the second pyrolysis draught fan passes through a second pyrolysis control valve and is then connected with the pyrolysis main control valve. Combined utilization of solid waste pyrogenation and boiler combustion is achieved, solid waste pyrogenation can be used for achieving resource recycling, compared with incineration power generation, the pyrogenation technology is obvious in solid waste reduction effect, and meanwhile the problem of pollution of dioxin and toxic heavy metal such as mercury, lead and cadmium can be solved. The solid waste pyrogenation and combustion system can be applied to solid waste treatment and boiler combustion on the large scale in the industry.

The invention provides a harmless sludge-treatment method, which comprises the following steps: 1) constructing a sludge incineration device, which comprises a sludge dewatering device, a mixing device, a drying device, a combustion device, a water circulation device and a combustion barrel; 2) transferring the sludge to the sludge dewatering device, performing rotary extrusion dewatering on the sludge to obtain dewatered sludge, sending the dewatered sludge to the mixing device through a dewatering discharge port, and adding straw dry matters to a straw feeding port provided on the mixing device to adjust the water content of the sludge so that the water content of the sludge is less than 50%, thus to obtain water-controlled sludge; and 3) starting a driving device to send the water-controlled sludge Into a combustion chamber, igniting the water-controlled sludge by a combustion barrel, shutting the combustion barrel after the water-controlled sludge is combusted, and activating an air blowing device and a water circulation device to continuously perform sludge incineration. The harmless sludge-treatment method has the characteristics of high sludge incineration efficiency and remarkable sludge reduction effect.

The invention discloses a treatment method for excess sludge, which belongs to the field of sludge treatment, and includes the steps of pre-treating; feeding the excess sludge to a sludge concentration tank for concentration; feeding the sludge subjected to the pre-treating steps into a closed reaction container and hydrolyzing the sludge at a certain pressure and at a certain temperature; and enabling the sludge subjected to hydrolytic treatment to be quickly deposited, and removing supernatant liquid on the sludge prior to drying the sludge, so that the dried sludge can be directly used as soil. The treatment method is simple in treatment technology, low in cost and capable of effectively treating the sludge which is harmful or easy to cause secondary pollution, so that harmlessness and reduction of the sludge are realized, and the sludge is kept stable.

The invention discloses a method for extracting humic acid liquid fertilizer with rich trace elements from sludge. The method comprises the following steps: (1) adding nitric acid into the sludge, stirring for 3 hours, centrifugating, and collecting the extract E1; (2) adding sodium hydroxide to the residual precipitate in step (1), stirring to extract for 6 hours, centrifugating, and collecting the extract E2; (3) adding sodium hydroxide into the residual precipitate in step (2), stirring to extract for 6 hours, mechanically dehydrating under high pressure, and collecting the extract E3; and(4) and mixing E1 obtained in step (1) and E2 obtained in step (2), and concentrating the mixed solution to obtain the humic acid liquid fertilizer. The method not only can complete the further dehydration process of sludge so as to reduce the water content of sludge from about 80% to less than 40%, but also can effectively extract humic acid, trace elements and other necessary nutritional ingredients for plants from sludge.

The invention relates to a method for optimizing a dummy plate of a double-volute type double-suction pump and a product produced with the same. The method comprises the following steps of: respectively carrying out three-dimensional modeling and grid dividing by selecting the double-volute type double-suction pump formed by a plurality of starting positions and stopping positions of the dummy plate; guiding the divided grid model into ANSYS-CFX software to carry out numerical simulation to obtain a flux-lift and flux-efficiency curve graph of the double-volute type double-suction pump and a single-volute pump and a flux-dependent impeller radial force distribution graph under each starting position and each stopping position; by analyzing the curved graph and the distribution graph, selecting the starting position and the stopping position which correspond to the curve representing the minimum impeller radial force as the starting position and the stopping position of the dummy plateof the double-volute type double-suction pump correspondingly, wherein the curve representing the minimum impeller radial force is one curve of all flux-lift and flux-efficiency curves of the double-volute type double-suction pump, which is very similar to a flux-lift and flux-efficiency curve of the single-volute pump; and adopting arc transition between the starting position and the stopping position, wherein the curvilinear equation for the arc transition is a log spiral equation, thus the optimization is finished.

The invention provides a concentration and decrement treatment method for chemical nickel waste liquid. The concentration and decrement treatment method comprises the following steps: S1, carrying out low-temperature negative-pressure evaporation and concentration on the chemical nickel waste liquid at the temperature of less than 50 DEG C and under the negative pressure condition; and S2, carrying out medium-temperature concentration and drying on the chemical nickel concentrated liquid treated in the step S1 at the temperature lower than 220 DEG C. According to the technical scheme, a low-temperature negative-pressure evaporation and concentration process is adopted for treatment, the waste liquid can be evaporated only by heating to a low temperature, energy consumption is greatly reduced, the evaporation efficiency can reach a high level, and about 70% of the waste liquid can become steam condensate water. After secondary evaporation concentration treatment of low-temperature negative-pressure evaporation concentration and medium-temperature concentration, drying and reduction, about 85% of waste liquid is converted into steam condensate water, the steam condensate water enters a waste water treatment facility to be treated and discharged after reaching the standard, about 15% of the rest waste liquid is concentrated into solid substances, and the waste liquid reduction effect is obvious.

The invention provides a domestic waste harmless treatment method which comprises the following steps of 1) building a domestic waste incineration device which comprises a dehydration device, a mixingdevice, a drying device, a combustion device, a water circulation device and a combustion barrel; 2) classifying domestic wastes, rejecting incombustible wastes, crushing the wastes to acquire the crushed wastes, removing iron-contained matters in the crushed wastes through a magnetic separation device to acquire the wastes after screening, conveying the wastes after screening to the dehydrationdevice for rotary extrusion dehydration of the domestic wastes, and conveying the treated domestic wastes to the mixing device for uniform mixing with straw dry substances to acquire water-controlleddomestic wastes; and 3) starting a drive device to send the water-controlled domestic wastes into a combustion chamber, igniting the water-controlled domestic wastes through the combustion barrel, closing the combustion barrel after combustion of the water-controlled domestic wastes, and starting an air blowing device and the water circulation device to continuously perform domestic waste incineration. The domestic waste harmless treatment method has the characteristics of high domestic waste incineration efficiency, remarkable quantitative reduction effect of the domestic wastes and the like.

The invention discloses a high-efficiency black and odorous water treatment method and device. The treatment device for purifying black and odorous water comprises an ecological floating island, wherein the ecological floating island comprises an ecological floating island rack and a plurality of planting tanks arranged on the ecological floating island rack; a self-driven displacement device is connected onto the ecological floating island rack and comprises a multi-parameter water quality detector, a first central processing unit and propellers which are respectively connected onto side periphery surfaces of the ecological floating island; the first central processing unit is used for receiving parameter signals of the multi-parameter water quality detector and presetting corresponding reference parameters; the propellers are arranged on the side periphery surfaces of the ecological floating island; an on-off controller of each propeller is controlled by the first central processingunit; and a self-generating device is connected onto the ecological floating island rack. A sludge treatment agent used for treating river sludge comprises 20-50 parts of modified charcoal powder, 30-50 parts of aggregate, 25-35 parts of a microbial agent, 15-25 parts of a co-substrate and 10-15 parts of an oxidizing agent.

The invention belongs to the field of microbes and their applications, and specifically discloses a composite bacterial agent based on Bacillus subtilis BS1 and its application. The Bacillus subtilis has been preserved in the China Center for Type Culture Collection, and the preservation number is: CCTCC NO: M 2019185. The compound microbial agent prepared by the bacterial strain and Saccharomyces cerevisiae, Bacillus megaterium and Bacillus licheniformis can be used for composting livestock and poultry manure. The composite microbial agent of the invention can increase the composting temperature in composting, shorten the time to reach high temperature, deodorize and fix nitrogen, and has a significant reduction effect on various antibiotic resistance genes and pathogenic bacteria in composting.

The invention discloses a water turbine draft tube with circular and oval grids in the technical field of vane type fluid machinery. The outermost part is a straight cone cylinder with a conical axial section, and a shunting cylinder is arranged in the straight cone cylinder; a supporting frame is fixedly connected between the outer side wall of the shunting cylinder and the inner side wall of the straight cone cylinder, and a disc-shaped shunting piece is arranged in the shunting cylinder; the outer wall of the shunting piece and the inner wall of the shunting cylinder are sealed and fixedly connected, a through round hole is formed in the middle of the shunting piece, a plurality of identical elliptical holes are uniformly formed in the shunting piece on the outer side of the round hole in the circumferential direction, and the long axis direction of each elliptical hole is along the diameter direction of the shunting piece; the shunting piece is used for crushing a vortex strip and reducing the pressure pulsation caused by the vortex strip; and due to the fact that the grids on the shunting piece are oval and circular, fluid separation and disengagement are small, the pressure difference between the interior periphery and the center of the draft tube is reduced, the radial pulsation of the vortex strip is weakened, the cavitation caused by the vortex strip in the draft tube is reduced, and the service life of the draft tube is prolonged.

The invention discloses an anaerobic digestion treatment method for antibiotic fermentation residue, which comprises the following steps that: (1) to-be-treated antibiotic fermentation residue is mechanically crushed until the crushed grain size is less than 50 meshes; (2) the crushed fermentation residue is added with water for regulation until the solid content is 10 to 30 percent, and is addedwith an alkaline agent, so that fermentation residue mixed liquid is obtained; (3) the fermentation residue mixed liquid is heated; (4) the heated fermentation residue is ultrasonically treated; (5) the ultrasonically treated fermentation residue is mixed with anaerobic sludge, and meanwhile, a straw digestion solution is added; after the solid content is regulated to 5 to 15 percent and pH is regulated to 7.0 to 7.5, anaerobic digestion is carried out, and produced methane is collected. According to the invention, on the basis of reducing the amount of antibiotic fermentation residue, methaneenergy can be recycled, so the method has good economical efficiency; and the method is applicable to the treatment of a variety of antibiotic fermentation residues.