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.

An integrated approach to construction waste, first the construction waste including demolished the buildings, housing renovation and improvement of road will be sent to the garbage handling sites by the car, and then the construction waste that could be directly in the use of renewable materials, such as metal, wood and plastic materials use artificial methods for separating classified, then supplying company directly for the corresponding treatment. The bulk of concrete waste, scrap brick, marble and other materials, using the large broken hammer or crusher broken to the size that mill can crush, typically less than 100 mm, and then using stone crusher breaking these stones and sand until the construction standard, then grading said mixture into big stones, small stones, coarse sand and fine sand, argillo-arenaceous ground and other breeder material using multi-layered grading sieve. The production water uses activated carbon hyperfiltration cleaning domestic sewage which can be used cyclically, it can save water and can prevent the reemission of sewage water polluting environment.

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 solidifying arsenic-calcium residue or arsenic-iron residue, comprising the following steps of: (1) drying arsenic-containing waste residue under 150-200 DEG C, and removing most moisture in the waste residue, so that the water content of arsenic residue is less than 20%; and if necessary, oxidizing the waste residue before drying; and (2) carrying out oxidizing roasting on the dried arsenic-containing waste residue under 600-1000 DEG C, wherein the roasting time is 1-3hours, and blowing in air or oxygen in the manner of natural air charge or initiative air supply in the process of roasting. The As concentration of leaching agent of arsenic-calcium residue or arsenic-iron residue treated by the method disclosed by the invention is much less than the nationally-regulated limiting value (5mg/ L), so that the arsenic can be effectively solidified, a treatment technology is compact in technological process, the operation is easy to control, and the method is lower in treatment cost.

The invention relates to a composite sludge deep dehydration conditioner as well as an application and an application method thereof, which belong to the technical field of resource environment and sludge treatment. The conditioner is prepared from the following raw materials in percentage by mass: 1 to 2 percent of a strong oxidant, 19 to 40 percent of an inert substance and 59 to 80 percent of strong cationic polyelectrolyte. The compound sludge deep dehydration conditioner designed by the invention has the advantages of high conditioning speed, high sludge dehydration rate, small sludge increment, simplicity in operation, high sludge volume reduction rate and the like, so that the compound sludge deep dehydration conditioner can be widely applied to conditioning and enhanced deep dehydration of sludge.

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 is subject 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-part is C30 through improving the mix proportion of the concrete and the pouring technology; the appearance quality measures up to the standard requirements.

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.

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 relates to an ecologic cement clinker fired through municipal waste incineration ash, and belongs to the technical field of building materials. The ecologic cement clinker is prepared from the following components in parts by weight: 15-82 parts of municipal waste incineration ash, 75-85 parts of sand stone, 20-25 parts of slag, 5-15 parts of yellow sand stone, 2-5 parts of powdered iron, and the balance of water, wherein the municipal waste incineration ash is obtained in a manner that after being crushed, municipal waste is conveyed to a waste incinerator to be subjected to high temperature processing through hot air at the temperature of 850-1250 DEG C to generate cured ash, namely the municipal waste incineration ash; concrete performance tests on cement show that test results of cement mixed concrete produced by mixing the municipal waste incineration ash and cement mixed concrete without the municipal waste incineration ash are similar, but the consumption of natural resources is reduced, so that the cement production cost is reduced, and the sustainable development of cement industries is facilitated.

Techniques for chemically recycling cellulose waste such as cotton are disclosed herein. In one embodiment, a method includes hydrolyzing a cotton waste and dissolving cellulose in the hydrolyzed cotton waste in an aqueous solution containing an alkali and one or more of urea ((NH2)2CO), polyethylene glycol, or thiourea (SC(NH2)2) to produce another aqueous solution containing dissolved cellulose.Then the another aqueous solution containing the dissolved cellulose can be extruded into a coagulation bath to coalesce the dissolved cellulose in the extruded solution, thereby reforming the dissolved cellulose from the cotton waste into a regenerated fiber.

The invention discloses a sludge gasifier, comprising a sludge storage bin, a feeding mechanism, a body, a sealed ash bin and a residue discharge mechanism which are connected sequentially from top tobottom. The feeding mechanism includes a feeding buffer bin; the feeding buffer bin is connected with the sludge storage bin and the body through feed pipes; a first rotary feed valve is arranged between the feeding buffer bin and the sludge storage bin; a second rotary feed valve is arranged between the feeding buffer bin and the body. The feeding mechanism is arranged between the sludge storagebin and the body and helps prevents fuel gas in the body from leaking out of a feed port during sludge feeding; fuel gas recycling efficiency is improved, and it is ensured that the whole sludge gasifier runs safely and stably.

A method for stabilizing the fly ash generated by incinerating garbage includes such steps as loading the fly ash in a tank truck, directly transporting it to the movable storage tank close to a burying pit, pneumatically delivering the fly ash into said storage tank, delivering the fly ash from the bottom of tank into said burying pit via a screw conveyer while spraying liquid chemical, mechanical spreading in pit, and tampering.

The invention discloses a sanitary garbage disposal device, which comprises a frame body composed of a backboard and a workbench, a compression device is arranged on the right side of the backboard, a fixing device is arranged on the top of the workbench, and the top surface of the fixing device and the bottom surface of the compression device are connected to each other. Correspondingly, the first empty box, the second empty box and the third empty box are arranged inside the compression device, the inner surface of the right side of the first empty box is provided with a second sliding groove, and the left side of the first empty box is provided with an outer screw extending up and down. The top extension block of the outer spiral sleeve sleeve penetrates the top surface of the first cavity and is screwed and connected, the tip of the top extension block of the outer screw sleeve sleeve extends into the second cavity, and the outer spiral The stretching block at the bottom of the sleeve sleeve penetrates through the inner bottom surface of the first cavity and is screwed and connected, and the outer threaded sleeve sleeve in the first cavity is screw-fitted and connected with a second sliding block extending to the right; The invention has simple structure and convenient operation, can compress garbage into garbage blocks of different sizes and densities according to different needs, reduces volume and saves landfill space.