13 results about "Sludge compost" patented technology

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.

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 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 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 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 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 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.

The application discloses a preparation method and application of an environmentally friendly Cu high-selectivity stabilizer. The preparation method comprises the following steps: under certain conditions, 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide hydrochloride (EDC) and N-hydroxysuccinimide (NHS) are used to activate the carboxyl group on L-cysteine; after chitosan powder is added, the pH is adjusted until a light blue purple precipitate appears; and then subsequent treatment is performed to obtain an amino acid modified chitosan porous material. The raw material is easy to obtain, the preparation method is simple, and the reaction condition is mild; the obtained stabilizer can efficiently, quickly and selectively adsorb Cu, can effectively stabilize Cu in soil, can reduce the toxicity of Cu on plants, can cooperate with ryegrass to repair Cu in sludge, and can effectively control the leaching risk of heavy metal Cu in sludge compost soil.

This utility model provides a sludge buffer silo with an impurity separation structure, relating to the field of sludge composting technology. It includes a silo and a filter; the silo has an inlet at the top and a outlet at the bottom; the filter is installed on the top of the silo, comprising an outer shell, a top cover, a filter cartridge, a motor, a rotating frame, a movable sleeve, and a spring; the bottom of the outer shell is connected to the top of the silo, and the top of the outer shell is connected to the top cover, with the filter cartridge located inside the outer shell; the motor is fixedly installed on the top cover, and its drive shaft is connected to the rotating frame, which is located inside the outer shell and surrounds the filter cartridge; the movable sleeve is slidably connected to the outside of the outer shell and is connected to the top cover. When sludge enters the filter, large particles of impurities are intercepted by the filter screen, preventing them from entering the silo. The filtered sludge is then discharged into the silo, effectively ensuring the quality of the sludge inside the silo.