35 results about "Sludge compost" patented technology

The invention discloses a method for promoting degradation and humification of sludge compost organic matters, and belongs to the technical field of sludge treatment. The method comprises the following steps: mixing sludge and straws to obtain a compost raw material, adjusting the carbon nitrogen ratio by utilizing the straws and improving the bulkiness of the compost raw material, adding phosphate and steel slag into the compost raw material, and uniformly mixing to obtain compost; and fermenting the compost until the compost is thoroughly decomposed to obtain the organic fertilizer. The phosphate and the steel slag are selected as a combined additive, the phosphate is used for reducing compost nitrogen loss and improving compost nutrients, meanwhile, the steel slag is further used for regulating and controlling pH and NH4 < + > conversion in the composting process, degradation and humification of compost organic matter are synergistically promoted, and the quality of a final compost product is improved. The cost is low, the operation method is simple, the effects of improving the composting efficiency and quality and degrading and converting organic matters are obvious, the decomposition degree of a compost product is improved, and the humic acid and humification degree in the compost after fermentation are increased.

The utility model relates to the technical field of sludge treatment equipment, and particularly discloses a sludge composting aeration device. The forced ventilation device comprises a forced ventilation device, a roller, a power device and a striker plate, the roller is driven by a power device to rotate, one end of the roller is connected with a forced ventilation device through a rotary connector, a plurality of winding areas are arranged on the roller, each winding area is correspondingly provided with an air conveying hose, one end of each air conveying hose is fixedly connected with the side wall of the roller, and exhaust holes are evenly formed in the pipe wall of each air conveying hose. After fermentation is completed, the air conveying hose can be pulled away from a material stack through the roller, then mechanical equipment can be conveniently used for carrying out operations such as loading or pile turning on materials, the production efficiency is high, and damage to parts of the aeration device during operation of the mechanical equipment is avoided. The sludge composting aeration device can wind and unwind the gas conveying hoses, and the arrangement positions and intervals of the gas conveying hoses are flexible and adjustable, so that the sludge composting aeration device has good flexibility and applicability.

Gas bio-trickling filter (g-BTF) processes are provided for polluted air purification mainly focusing on the treatment of VOCs and odor using low-cost filter media (agricultural waste i.e., wood char coal and other waste i.e., sludge, compost etc.) that is cheap and readily available. Apparatus for purifying volatile organic compounds and odor control enriched air stream uses a consortium of the microorganisms including Rhodococus sp., Paracocus sp, Microbacterium sp., Mutant Paracocus denitrificans sp. The consortium approach ensures a broader range of VOC degradation capabilities, allowing for efficient removal of multiple compounds simultaneously. This versatility makes biotrickling filters highly adaptable to different industrial settings, such as paint manufacturing plants or automotive facilities. Compared to other process (thermal and chemical process), the developed BTF process are associated with the lowest operating and maintenance costs. Overall VOC and odor removal efficiency of the g-BTF unit is 99.9%.

The invention discloses a hydropower station sludge recycling treatment device, and relates to the technical field of sludge composting, the hydropower station sludge recycling treatment device comprises a fertilizing barrel, a spreading and mixing mechanism, a synchronous driving mechanism, a feeding mechanism and a stirring mechanism, the fertilizing barrel is provided with a closed blending area and a homogenizing area, and the blending area is located above the homogenizing area; the spreading and mixing mechanism comprises a base disc and a plurality of fan-shaped spreading and mixing plates, and when all the spreading and mixing plates rotate to be horizontal, all the spreading and mixing plates are tightly connected to form an annular spreading and mixing bed; the synchronous driving mechanism can synchronously drive all the rotating shafts to rotate in the same direction; the feeding mechanism is used for providing a treating agent and a microbial culture solution which are required for fertilizing the sludge, and the output end of the feeding mechanism is positioned above the spreading and mixing bed; and the stirring mechanism is arranged in the homogenizing area. The technical problem that the mixing uniformity of sludge, a treating agent and a microbial culture solution is not ideal can be solved.

The invention provides a goethite composite treatment agent and a preparation method and application thereof. The goethite composite treating agent is composed of goethite, MnO and Mn2O3, the ammonia nitrogen oxygenase activity of ammoxidation microorganisms is improved in the sludge composting process, and then the ammonia loss and nitrogen volatilization of compost products are reduced. Straws are also added into the sludge to increase the oxygen content in the composting process of the sludge. In addition, the iron ore, the manganese oxide and the component mixing proportion in the goethite composite treating agent are screened, and the adding amount of the goethite composite treating agent and the straw in the sludge composting process and the moisture content and the aeration rate of a pile body are screened. The sludge composting method provided by the invention has the advantages of simplicity in operation, high treatment efficiency, good effect and the like, is suitable for large-scale high-quality preparation of sludge composting products, is suitable for large-scale application, and solves the problems of serious nitrogen loss, large emission of harmful nitrogen gas and the like in the existing sludge aerobic composting.

The present invention provides a method for preparing artificial soil by conditioning sludge compost with iron tailings and coordinating plant colonization. First, municipal sludge, straw and iron tailings are mixed evenly and then placed in a closed composting reactor for aerobic composting. After the internal temperature of the compost reaches a peak, the compost product is collected as a high-temperature compost product; the high-temperature compost product is then mixed evenly with the iron tailings and inoculated with an inoculum containing soil microorganisms; the inoculated artificial soil matrix is ​​placed in a container for sufficient static cultivation; plant seedlings are planted in the cultivated artificial soil matrix for plant colonization, and artificial soil is obtained after the plant colonization is completed. The present invention uses iron tailings as a conditioning agent to promote the humification of organic matter and the formation of aggregates during the sludge composting process, and further plants are colonized in the compost product to stabilize the artificial soil structure, thereby improving the structural stability and land utilization efficiency of the sludge-based artificial soil.

The invention provides a method for preparing artificial soil through cooperation of iron tailing conditioned sludge compost and plant colonization, which comprises the following steps: uniformly mixing municipal sludge, straws and iron tailings, placing the mixture in a closed compost reactor for aerobic composting, and collecting a compost product as a high-temperature period compost product after the temperature in a compost body reaches a peak value; uniformly mixing the compost product in the high-temperature period with iron tailings, and inoculating inoculation liquid containing soil microorganisms; placing the inoculated artificial soil matrix in a container, and fully standing and culturing; plant seedlings are planted in the cultured artificial soil matrix for plant field planting, and the artificial soil is obtained after plant field planting is finished. According to the method, the iron tailings are used as a conditioner, organic matter humification and aggregate formation in the sludge composting process are promoted, composting products are further subjected to plant planting so as to stabilize the artificial soil structure, and the structural stability and the land utilization efficiency of the sludge-based artificial soil are improved.

A self-cleaning mechanism of the sludge directional decomposition integrated treatment device comprises a mounting frame connected to the upper end of a barrel cover, the upper end of the mounting frame is fixedly connected with a motor, the output end of the motor is fixedly connected with an electric push rod, and the output end of the electric push rod is in transmission connection with a connecting rod; an inserting hole penetrating through the top and the bottom of the barrel cover is formed in the barrel cover, the connecting rod penetrates through the barrel cover through the inserting hole, the lower rod wall is sleeved with a connecting frame, and an annular pipe is connected to the connecting frame; a water pump is arranged at the upper end of the barrel cover, a water inlet of the water pump is connected with a water inlet pipe, a water outlet is connected with a hose, one end of the hose is connected with an annular pipe, and the annular pipe is circumferentially connected with a plurality of high-pressure nozzles; the bottom of the annular pipe is connected with a scraping plate capable of moving up and down along the inner wall of the sludge decomposing barrel, and the scraping plate is used for scraping dirt on the inner wall of the sludge decomposing barrel. The device can greatly improve the directional decomposition treatment efficiency and convenience of the sludge.

The application discloses a method for promoting polycyclic aromatic hydrocarbon degradation in sludge composting. Natural vermiculite powder is used in the composting process to degrade polycyclic aromatic hydrocarbons in compost fertilizer by using the catalytic performance. The advantages are as follows: waste mushroom residue is used as a bulking agent and a source of inoculant, and powdered natural vermiculite is used as a catalyst, so that the humification of sludge-waste mushroom residue compost and the reduction of room temperature gas emission are promoted, and the degradation efficiency of polycyclic aromatic hydrocarbons in the sludge composting process is greatly improved.

The invention relates to the technical field of environmental engineering and resource recycling, and provides a sludge compost in-situ capture and mineralization carbon sequestration method, which comprises the following steps: mixing red mud and serpentine powder, humidifying, dehydrating after humidifying, and optimizing the particle size; then performing high-temperature activation to form a primary pore structure; then carrying out chemical modification and vacuum filtration to obtain a modified porous adsorption material; carbonate sedimentary bacteria are adopted as target strains, the target strains are subjected to propagation expanding treatment, and high-density bacterial liquid is formed; soaking the modified porous adsorption material in a high-density bacterial liquid, and loading microorganisms; allowing the microorganism-loaded modified porous adsorption material to stand to form a negative carbon capture material; the negative carbon capture material and sludge compost are mixed in proportion and then stacked into a pile body, CO2 in the sludge compost is captured and fixed through the negative carbon capture material, and meanwhile the sludge compost is catalyzed to generate carbonate. The composting efficiency and humification level can be remarkably improved, the additional value of compost products is improved, and the recycling application range is expanded.

The invention discloses a treatment method suitable for livestock breeding wastewater, and relates to the field of wastewater treatment.The wastewater sequentially passes through a pretreatment unit, a biochemical treatment unit, an advanced treatment unit and a solid waste resourceful treatment unit, and the pretreatment unit comprises solid-liquid separation, water quality adjustment and preliminary flocculation precipitation; the biochemical treatment unit comprises anaerobic treatment and a two-stage A / O process. Through an integrated process of pretreatment, two-stage A / O biochemical treatment, hollow fiber nanofiltration and contact oxidation, synergistic deep removal of organic matters, nitrogen, phosphorus and chromaticity in the breeding wastewater is realized, the effluent quality is excellent and stable, the impact load resistance of the system is high, energy and resource recovery is realized through UASB biogas production and sludge composting, and the method is suitable for industrial production. Optimized membrane molecular weight cutoff and automatic control ensure long-term stable operation of a membrane system, membrane concentrated water backflow avoids secondary pollution, and a set of efficient and recycling complete solution is formed.

This utility model provides an automatic turning and turning device for sludge composting, relating to the field of sludge composting technology. It includes a turning and turning device frame, with a turning and turning guide frame welded to the top of the frame. The turning and turning guide frame has a hollow structure, with both its top and bottom being arc-shaped. Sludge is cut and folded by a high-speed moving baffle and enters the turning and turning guide frame, impacting and crushing the clumps in the sludge, improving the breaking effect on the compacted layer of the compost pile. This device is suitable for treating hard sludge compost and solves the problems of traditional sludge composting methods, which typically involve manual turning or using a bucket truck to shovel and scatter the sludge before turning. These methods fail to effectively stir or break up the compost pile during turning, making it difficult to break up the compacted layer, resulting in poor aeration. Furthermore, the thorough mixing of sludge with straw, sawdust, and other auxiliary materials requires multiple turnings, leading to low turning efficiency in sludge composting.

The invention discloses a high-precision flow metering device and a metering method thereof. The high-precision flow metering device comprises a sludge decomposing barrel, a supporting seat is mounted at the bottom of the sludge decomposing barrel, a barrel cover is fixedly connected to the top of the sludge decomposing barrel, and a self-cleaning mechanism is mounted on the barrel cover; the self-cleaning mechanism comprises a mounting frame fixedly connected to the upper side of the can cover, a motor is fixedly connected to the upper side of the mounting frame, an electric push rod is fixedly connected to the output end of the motor, a connecting rod is fixedly connected to the output end of the electric push rod, an inserting hole is formed in the can cover, and the connecting rod penetrates through the can cover through the inserting hole. The rod wall of the connecting rod is fixedly sleeved with a connecting frame, an annular pipe is fixedly connected to the connecting frame, and a water pump is fixedly connected to the upper side of the barrel cover. The cleaning convenience of the directional sludge decomposition treatment device is effectively improved, and the use convenience of the directional sludge decomposition treatment device is effectively improved.

The invention discloses a method for promoting sludge compost humification and PPCPs degradation by using laccase and biochar, and the method comprises the following specific steps: crushing a conditioner rich in lignocellulose to 3-5mm, fully mixing the crushed conditioner and dewatered sludge according to a mass ratio of 1: 5 to obtain a compost material, adjusting the moisture content of the compost material to 65-75wt%, uniformly mixing the compost material with the biochar to obtain a mixture, and drying the mixture to obtain the product. The initial C / N element molar ratio is adjusted to be (7.5-8): 1; and S2, uniformly mixing charcoal and a laccase solution with the compost material obtained in the step S1 to obtain a mixed material, and composting the mixed material to obtain a compost product. According to the method, the biochar and the laccase are used as compost additives, and the degradation rate of microorganisms on PPCPs is increased and the content of the PPCPs in compost is reduced by utilizing the oxidability of the laccase on organic pollutants and the promotion effect of the biochar on enzyme activity expression.

The utility model provides a sludge composting buffer stock bin, in particular to the technical field of sludge composting, which comprises a buffer stock bin body, an observation mechanism and a stirring mechanism, the outer side surface of the buffer stock bin body is fixedly connected with a discharge pipe, the sludge is injected into the buffer stock bin body through two feed ports, and the two feed ports are arranged, so that the sludge composting buffer stock bin is convenient to use. Sludge in the temporary storage bin body can be observed more conveniently through an observation window, and a motor is started to drive a first bevel gear on a connecting shaft to rotate, so that a first stirring frame on a second bevel gear is driven to rotate clockwise; a first bevel gear can drive a second stirring frame on a third bevel gear to rotate anticlockwise, so that sludge can be stirred, stirring can be more thorough through rotation of the first stirring frame and the second stirring frame in different directions, stirring can be better performed by matching with an auger to turn over materials, and two groups of stirring mechanisms are arranged.

The invention provides a method for degrading micro-pollutants in a siderophore-mediated bio-abiotic synergistic reinforcement sludge composting process, which comprises the following steps: firstly, preparing an iron-based catalyst from zero-valent iron powder and a deferoxamine DFO solution, uniformly mixing dewatered sludge containing the micro-pollutants with a conditioner according to a ratio, adding the iron-based catalyst into the mixed material, and uniformly stirring to obtain a mixture; the mixed materials are subjected to aerobic composting, and the removal rate of micropollutants in the compost after composting is over 80%. The method overcomes the defects of low degradation efficiency, high cost, secondary pollution risk, biological and non-biological process separation and the like in the prior art, effectively solves the key bottleneck of microbial iron limitation in an existing composting system, realizes a biological-non-biological efficient synergistic strategy, and has the advantages of high efficiency, economy, environmental friendliness and the like.

The invention provides a breeding frame sludge composting device and method, and relates to the technical field of sludge composting, the breeding frame sludge composting device comprises a position control device for controlling the lifting movement of a breeding frame, and a feeding and discharging device for conveying and discharging sludge, the feeding and discharging device comprises a feeding and discharging main body and a first driving device for controlling the feeding and discharging main body to horizontally move, and the feeding and discharging main body is controlled by the first driving device to enter the breeding frame to complete feeding and discharging of sludge; the feeding and discharging main body comprises a mounting frame, first driving rollers are arranged on the two sides of the mounting frame, a second driving roller is movably arranged on the first side of the mounting frame, the movement track of the second driving roller is located on a virtual circumference line, and the outer sides of the two first driving rollers and the outer side of the second driving roller are sleeved with a conveying belt. According to the sludge compost feeding device, the sludge compost feeding time is greatly shortened, and the sludge compost feeding and discharging efficiency is improved.

The invention provides a method for reducing generation of odor in a preparation process of a sludge-based soil conditioner, and belongs to the technical field of sludge resourceful treatment.The method comprises the following steps that sludge and agricultural waste with the particle size of 1-3 cm are evenly mixed on the basis of the carbon nitrogen ratio of 20-30: 1, a complex microbial inoculant containing bacillus subtilis, nitrifying bacteria and saccharomyces cerevisiae is inoculated, and the mixture is stirred to be uniform; and adjusting the water content to about 60%, and carrying out aerobic composting fermentation in a fermentation tank to obtain the sludge-based soil conditioner. The method is good in composting effect, generation of odor in the sludge composting process is greatly reduced, and meanwhile reduction, harmlessness and resource recovery of the sludge and agricultural waste are achieved.

This invention provides a method for enhancing the degradation of micropollutants during sludge composting through a synergistic biological-abiotic process mediated by an iron carrier. First, an iron-based catalyst is prepared by mixing zero-valent iron powder with a deferroamine (DFO) solution. Then, dewatered sludge containing micropollutants is mixed uniformly with a conditioner in a specific ratio. The iron-based catalyst is added to the mixture, and the mixture is then subjected to aerobic composting. After composting, the removal rate of micropollutants in the compost is greater than 80%. This invention overcomes the shortcomings of existing technologies, such as low degradation efficiency, high cost, risk of secondary pollution, and separation of biological and abiotic processes. It effectively solves the key bottleneck of "microbial iron limitation" in existing composting systems, achieving a highly efficient synergistic biological-abiotic strategy, and possesses advantages such as high efficiency, economy, and environmental friendliness.

The invention provides a method for simulating concentration diffusion of polluted gas in a sludge composting workshop, belongs to the technical field of airflow diffusion simulation, and can solve the technical problem that the traditional CFD simulation method cannot simulate and calculate the concentration diffusion of the polluted gas in the sludge composting workshop. The simulation method comprises the steps of building a geometric model of the sludge composting workshop, performing grid division on the geometric model, setting a simulation solver, selecting a calculation model, setting boundary conditions, performing numerical simulation calculation and processing data. The device can be applied to simulation of the diffusion condition of the pollution gas in the sludge composting workshop with negative pressure suction, the boundary conditions of the pollution non-point source can be efficiently and accurately described by reasonably partitioning the pollution non-point source and combining field test data, and the concentration distribution of the pollution gas in each position of the sludge composting workshop can be controlled. Therefore, a deodorization and ventilation scheme is optimized, and the method has very important significance in improving the environment quality of a workshop.

The application discloses a method for removing antibiotic resistance genes in straw sludge compost and application thereof, and belongs to the technical field of composting. In order to remove antibiotic resistance genes in municipal sludge, the application provides a method for removing antibiotic resistance genes in straw substrate sludge compost, specifically, antibiotic resistance genes are removed through combined action of strong oxidation and high temperature in aerobic composting. The method significantly reduces the abundance of antibiotic resistance genes in the compost sample on the basis of traditional aerobic composting technology, and reduces the potential risk of human health caused by recycling of the compost product in combination with an ozone oxidation technology and corn straw as a carbon source.

The invention discloses a sludge composting synergistic heavy metal reduction and passivation method based on deep dehydration, and relates to the technical field of sludge composting, and the method comprises the following steps: 1, sludge conditioning: adding a conditioning agent, a dehydration skeleton and a heavy metal passivation auxiliary material into sludge with the water content of 80%-97%, and carrying out mixing, stirring and conditioning; step 2, deep dehydration: carrying out deep dehydration on the conditioned sludge; and step 3, sludge composting: mixing the deeply dehydrated sludge with 10-100% of a compost finished product, carrying out aerobic composting with the pile height of 1-2m, carrying out blast aeration and pile turning, turning the pile once every 1-3 days, and carrying out composting for 15-30 days to obtain the compost finished product. Therefore, the problems existing in the existing aerobic composting technology are solved, and harmless, reduction and resourceful treatment of the residual sludge generated by the municipal sewage treatment plant is realized.

The utility model discloses a town sludge compost moisture adjusting device which comprises a first mixing container and a second mixing container, the bottom of the first mixing container and the bottom of the second mixing container are connected with a first spiral conveying pipe and a second spiral conveying pipe respectively, and the first spiral conveying pipe and the second spiral conveying pipe intersect and converge to form a mixing part. The mixing part is provided with a third spiral conveying pipe used for discharging the mixed materials, a driving motor is arranged on the mixing part, and the driving motor drives a third spiral conveying rod in the third spiral conveying pipe to mix the materials. Sludge with the target moisture content is obtained through gear driving and a spiral conveying mechanism according to different schemes, namely, the proportion of materials with the fixed moisture content ratio and the proportion of sludge with the variable moisture content are mixed according to the two schemes, and the sludge with the target moisture content is obtained through the pipe diameter and the lead with the specific proportion according to the two schemes. And the sludge with the target moisture content is obtained according to the working time of the clutch mechanism, so that the sludge moisture content adjustment operation is greatly facilitated.

The invention relates to a municipal sludge rapid composting device provided with a turning and throwing aeration mechanism, the municipal sludge rapid composting device comprises a composting pool fertilizer and the turning and throwing aeration mechanism movably arranged in the composting pool fertilizer, the turning and throwing aeration mechanism comprises a hollow turning and throwing shaft and a turning and throwing assembly arranged on the turning and throwing shaft, the turning and throwing assembly comprises a plurality of rows of fixing rod pieces which are transversely and fixedly connected to the turning and throwing shaft side by side, guide holes communicated with the turning and throwing shaft are formed in the middles of the fixing rod pieces respectively, corresponding turning and throwing blocks are detachably installed at the outer ends of the fixing rod pieces respectively, and the sides, not connected to the fixing rod pieces, of the turning and throwing blocks are arranged in a slope shape. A connecting hole communicated with the guide hole is formed in the middle of the turning block in a penetrating manner, and a multifunctional aeration assembly is arranged in the connecting hole. The municipal sludge compost turning device is simple in structure, reasonable in design and convenient to use, the turning uniformity of municipal sludge compost can be obviously improved, and the contact rate of the compost and air is increased.

The utility model provides a kind of municipal sludge compost fermentation produced condensate waste liquid processing system, it is related to condensate waste liquid processing field, including mixed sedimentation tank, ozone reaction device, dilution tank, and mixed sedimentation tank is equipped with dosing opening, sewage inlet, condensate waste liquid enters into mixed sedimentation tank from sewage inlet, and reagent is added to mixed sedimentation tank by dosing opening, and the reagent is added is calcium hydroxide solution, and the sewage outlet of mixed sedimentation tank is connected by pipeline and the water inlet of ozone reaction device, and the water outlet of ozone reaction device is connected by pipeline and the water inlet of dilution tank;After reaction and deposition, sludge is entered into the feed end of sludge compost system by sludge outlet;Sewage and tail water addition ratio in dilution tank are 1:10+;Beneficial effect: the liquid after processing of the application is used as supplementary nitrogen fertilizer and garden greening water is mixed and irrigated, and the generated precipitate is used for compost fermentation to enhance sludge fertility, and the application achieves the purpose of source treatment and the treatment process is simple.

The application discloses a kind of kitchen garbage marsh sludge compost-pyrolysis collaborative disposal methods, comprising the following processes: providing kitchen garbage marsh sludge, the product after kitchen garbage is treated by anaerobic fermentation technology;The kitchen garbage marsh sludge is divided into two parts, and the first part kitchen garbage marsh sludge is pyrolyzed, and marsh sludge charcoal, bio-oil and pyrolysis gas are obtained;The bio-oil and the pyrolysis gas are combusted to generate heat;Second part kitchen garbage marsh sludge and the marsh sludge charcoal are mixed to carry out aerobic composting, and fertilizer is obtained.The marsh sludge charcoal generated by pyrolysis is added to composting, which can significantly improve the composting temperature, not only can fully sterilize, but also can significantly speed up the composting maturity progress, shorten the composting time, improve the marsh sludge treatment efficiency, while also reducing odor emission.

The invention relates to a method for remodeling saline-alkali soil ecology, in particular to a method for remodeling saline-alkali soil ecology through cooperation of multi-source sludge compost and microwaves. The method aims to solve the problems that an existing saline-alkali soil improvement method is high in cost and serious in water resource waste, secondary salinization of surrounding soil is possibly caused by unsmooth drainage, and the method is difficult to implement in areas lack of fresh water resources. The method comprises the following steps: step 1, analyzing component characteristics of multi-source sludge, and establishing a scientific raw material proportioning model; step 2, piling the pretreated sludge mixture into a strip pile shape, reasonably arranging a microwave emission device and a ventilation pipeline in a pile body, and constructing a microwave-aerobic coupling fermentation environment; and step 3, formulating a microwave enhanced compost application scheme for soil with different saline-alkaline degrees. The invention belongs to the technical field of environmental science and agriculture.

The utility model relates to the technical field of sludge fermentation equipment, and discloses a sludge fermentation device for sludge composting treatment, which is characterized in that a mounting frame is fixedly connected to the left side of the top of a fixing frame, homogenizing mechanisms are fixedly connected to the middle of the mounting frame and the top of the fixing frame, a fermentation tank is fixedly connected to the tops of the homogenizing mechanisms, and a cover plate is inserted into the top of the fermentation tank; a buffer mechanism is arranged at the top of the fixed frame and at the bottom of the fermentation tank. According to the sludge fermentation device for sludge composting treatment, after sludge enters a fermentation tank, a motor drives a uniform disc to rotate at the moment, when the uniform disc rotates, the uniform disc moves along a circumferential track through a buffer pin, and at the moment, a connecting rod can be driven by the buffer pin to move; and the connecting rod is driven to make the fermentation tank move left and right on the sliding rod under the cooperation of the sliding block, so that the sludge in the fermentation tank moves left and right, and the fermentation efficiency of the whole sludge is improved.

The invention provides an acid mine in-situ remediation material and an acid mine in-situ remediation method, and belongs to the technical field of mine remediation. The repairing material is prepared from, by mass, 50-60 parts of fly ash aerated concrete particles and 30-40 parts of sludge compost, the fly ash aerated concrete particles are obtained after building waste residues made of fly ash aerated concrete materials are crushed, the sludge compost is obtained by fermenting municipal sludge, the repairing material can synchronously repair the acid mine through multiple synergistic mechanisms, and the repairing efficiency is improved. The method has the advantage of being good in repairing effect, meanwhile, a large amount of building waste residues and municipal sludge can be recycled, and the repairing cost of the acid mine is synchronously reduced.

The application discloses an earthworm biological treatment method of residual sludge and relates to the technical field of sludge treatment, and comprises the following steps: mixing dry sludge and residual sludge at a mass ratio of 1:1-4, adjusting humidity and air permeability by using the dry sludge, and stacking the sludge into earthworm breeding materials with a height of 7cm-13cm; the water content of the earthworm breeding materials is 55%-65%; inoculating earthworms into the earthworm breeding materials, culturing, and obtaining earthworm compost. The method can improve the activity and growth and reproduction rate of the earthworms, shorten the treatment period of the residual sludge, reduce the treatment cost of the residual sludge, improve the productivity of the earthworms and the quality of the residual sludge compost, and the like.