31results about How to "Save landfill space" patented technology

The invention relates to a sludge drying and burning technique and its system devices, applying to the handling of active sludge in urban sewage treatment plants, its process flows through: wet sludge stock house, measuring bin, sludge mixer, sludge dryer, granular splitter, cooler, drying products storage bin, incinerator, smoke gas cleaning devices, which is characterized by: said incinerator is bubbling fluid bed incinerator with coal economizer, air heater fixed in its end part, high-heat smoke gas generated by burning is used to heat heat-conducting oil and cool air individually, and heat-conducting oil after being heated is transferred to sludge dryer through the circulating pump to dry wet-sludge. The invention is characterized by: take heat-conducting oil as heating medium, use the heat generated by burning dry sludge to heat heat-conducting oil and then dry wet-sludge to make full use of resources; the volume-reducing quantity after drying and burning could reach over 90%; the percentage of desulphurization in incinerator could reach 75% as a result of adopting two stage technology of sulfur removal, and the gross percentage of desulphurization meets national environmental legislation requirements. The invention accomplishes the resources, volume reduction, and innocence of sludge.

The invention discloses waste treatment equipment which comprises a main body. An extruding cavity is formed in the main body; a regulating cavity is formed in the position, on the lower portion of the extruding cavity, in the main body; a transverse groove is formed in the inner top wall of the extruding cavity in a left and right extending mode; a sliding block is arranged in the transverse groove; an extruding power device is fixedly arranged on the end face of the front side of the sliding block; the bottom of the extruding power device is provided with an extruding head which stretches into the extruding cavity and is rotatably connected with the extruding cavity in a matched mode; first guiding grooves and second guiding grooves formed in the upper portions of the first guiding grooves are formed in the inner side faces of the left side and the right side of the extruding cavity correspondingly; first guiding rods are arranged in the first guiding grooves in an up and down extending mode; and first square grooves are formed in the inner top walls of the second guiding grooves. The waste treatment equipment is simple in structure, waste can be extruded into waste blocks with different sizes and different densities according to different requirements, the size is reduced, the landfill space is saved, the deodorization effect is good, the requirement of extrusion work of the waste in waste boxes with different specifications is met, self fixation can be achieved, and the working efficiency is high.

The invention discloses a garbage disposal device. The garbage disposal device comprises a frame body composed of a back plate and a workbench. A compression device is arranged on the right side of the back plate. A fixing device is arranged at the top of the workbench. The top face of the fixing device corresponds to the bottom face of the compression device. A first cavity, a second cavity and a third cavity are formed in the compression device. A second sliding groove is formed in the inner face of the right side of the first cavity. An outer thread tube sleeve arranged in an up-down extending mode is arranged on the left side of the first cavity. A top extension block of the outer thread tube sleeve penetrates through the inner top face of the first cavity and is connected with the inner top face of the first cavity in a rotational fit mode. The tail of the top extension block of the outer thread tube sleeve extends into the second cavity. A bottom extension block of the outer thread tube sleeve penetrates through the inner bottom face of the first cavity and is connected with the inner bottom face of the first cavity in a rotational fit mode. A second sliding block extending rightwards is connected to the part, in the first cavity, of the outer thread tube sleeve in a helical fit mode. The garbage disposal device is simple in structure and convenient to operate, garbage can be compressed into garbage blocks with different sizes and densities according to different requirements, the size is reduced, and the landfilling space is saved.

The invention discloses a method for detecting simulated incineration products of phosphorus-based flame retardants in electronic waste, comprising the following steps: (S1) analysis of phosphorus-based flame retardants in electronic waste; (S2) designing a simulated incinerator; (S3) electronic waste Simulated incineration of waste; (S4) analysis of incineration products; (S5) resource utilization of phosphorus components in electronic waste incineration products. This method simulates incineration in an incinerator and detects the type and content of phosphorus-containing components in the products before and after the simulated combustion of phosphorus-based flame retardants in electronic waste. A resource utilization method for phosphorus-containing components in products.

The invention discloses a two-step flotation treatment method for incineration fly ash of medical waste. The following steps are adopted: 1) decarbonization flotation to obtain two products of enriched carbon and primary tailings, and sending the enriched carbon product into garbage Combustion in the second combustion chamber of the incinerator; 2) acid leaching filtration: add inorganic acid to the primary tailings obtained in step 1) to carry out acid leaching and then filter to obtain two products: residual ash and heavy metal waste liquid; the residual ash is directly sent to domestic garbage Landfill for safe landfill disposal or reuse; 3) Ion flotation: Add flotation agents to the heavy metal waste liquid obtained in step 2) to carry out ion flotation to obtain two products of heavy metal concentrated foam and waste water; concentrate the heavy metal The foam is sent to the smelter to recover heavy metals Pb and Zn, and the wastewater is neutralized and discharged into the sewage system after reaching the standard. The invention has the advantages of simple operation, low cost, good treatment effect and no secondary pollution.

Techniques for chemically recycling cellulosic waste such as cotton are disclosed herein. In one embodiment, the method comprises, hydrolyzing cotton waste and dissolving the cellulose in the hydrolyzed cotton waste in a solution containing alkali and selected from urea ((NH 2 ) 2 CO), polyethylene glycol, or thiourea (SC(NH 2 ) 2 ) in an aqueous solution of one or more of them to produce another aqueous solution containing dissolved cellulose. Another aqueous solution containing dissolved cellulose may then be extruded into a coagulation bath to coagulate the dissolved cellulose in the extruded solution, thereby reforming the dissolved cellulose from the cotton waste into regenerated fibers.

The invention discloses a technology for improving the dewaterability of excess sludge. The technology includes the first step of low-temperature plasma aeration, the second step of acidity regulation, the third step of fenton-like oxidation and the fourth step of plate-frame pressure filtration. The low-temperature plasma technology is combined with fenton-like oxidation for treatment the excess sludge together, sludge cell walls are effectively damaged, and the dewaterability of the sludge is improved. The water content after sludge dewatering is lower than 60%, the salt content is low, the heat value is high, and the technology is suitable for sanitary landfill and incineration and also suitable for aerobic fermentation to prepare biological organic fertilizers.

The invention provides a soilless cover material for sanitary landfill of solid waste garbage. The soilless cover material for sanitary landfill of the solid waste garbage comprises components with parts by weight: water-soluble cellulose polymers 2-25 parts, plant fibers 20-100 parts, clay 10-100 parts, gypsum 5-50 parts and water 500-3000 parts, wherein the water-soluble cellulose polymers is an ionic type, and the plant fibers are an expanded type. The soilless cover material for sanitary landfill of the solid waste garbage is degradable, is about 5%-10% in water penetration rate, also has a certain amount of water permeability, and has great promotion effect for breeding of garbage natural degradation bacteria. The soilless cover material for sanitary landfill of the solid waste garbage eliminates garbage layering after being degraded, enables garbage of a whole landfill to be an entirety, and plays great role for improving garbage density. Compared with other cover methods, the soilless cover material for sanitary landfill of the solid waste garbage has great advantages in cost.

The invention relates to a method for producing concrete water conservancy prefabricated-part with tubular pile waste water slurry. Firstly concrete, medium sand and gravel are launched into a concrete mixer to be mixed for 30 seconds to 60 seconds according to proportion by weight; and then the tubular pile waste water slurry is added when stirring; the quantity of the water slurry added into issubject to slump constant of the concrete mix which is between 30 mm to 120mm; the concrete mix is produced after the wet mixture is acted for 30 to 60 seconds. And then the concrete mix is launched into a prefabricated-part mould; a concentrated vibro is adopted for processing, and the distance between vibro points is 0.8 times to 1.2 times of the working radius of a vibrating spear. When in pouring, the concrete mix needs to be processed for pouring layer upon layer in the mould in a horizontal plane rising way. At last maintenance is processed according to a conventional maintenance process method. Aiming at the mechanical property requirements of the concrete water conservancy prefabricated-part, the pressive strength grade of the produced concrete water conservancy prefabricated-partis C30 through improving the mix proportion of the concrete and the pouring technology; the appearance quality measures up to the standard requirements.

The invention discloses a sub-step flotation and detoxification method for incineration fly ash of medical garbage. The sub-step flotation and detoxification method is characterized in that coseparation of dioxin and a carbon component is realized by first-step flotation, so that the toxicity of organic pollutants including the dioxin and the like in the fly ash is reduced; meanwhile, soluble heavy metal is eluted; second-step flotation of tail slurry is subjected to a sulfide precipitation flotation method and heavy metal including Pb, Zn and the like is removed and recycled, so that the harms of the heavy metal are eliminated. Separated final products mainly comprise enriched carbon, residual ash, heavy metal sediment salt and the like, wherein the enriched carbon rich in the dioxin is conveyed into a garbage incinerator secondary incineration chamber to be incinerated, so that the high-temperature decomposition of the dioxin is realized by a low cost; the volume and the toxicity of the residual ash are greatly reduced and the residual ash is directly conveyed into a municipal solid waste landfill to be safely treated or reutilized, so that the subsequent treatment cost is greatly reduced; the heavy metal in the fly ash is leached with an acid and vulcanized and then is precipitated, floated and recycled, so that a plurality of purposes are realized. The method can realize harmless treatment and resource utilization of the incineration fly ash of the medical garbage under environment-friendly and low-cost conditions.

The invention relates to the technical field of paper-making machinery, and in particular relates to a method and a system for crushing and recycling twisted ropes. The recycling method comprises the following process steps of: feeding materials, namely, feeding the twisted ropes to a feeding conveyer belt by using a hanger; roughly crushing, namely, conveying the twisted ropes to a rough crusher to crush so as to make strip rough materials which is 16-25cm long and 5-10cm wide; secondarily crushing, namely, feeding the strip rough materials into a secondary crusher to crush so as to make strip fine materials which are 5-10cm long and 2-8cm wide; and separating and recycling, namely, conveying the strip fine materials to magnetic field effect metal separation equipment to separate, and collecting so as to obtain ferrous metals and non-metal waste. The method and the system have the advantages that the process is simple and developed, the operation is simple, the utilization rate of the raw material is high, and the economic benefits and the social benefits are good.