1328results about How to "Improve dehydration efficiency" patented technology

The invention discloses a pressing type sludge dewatering device, which comprises the straining chamber with feed head and outfall on the jamb wall, wherein the feed head connects to sludge transfer pump; the face side of filter pad is bundled by chain cloth; the filter pad installs colature discharging channel connecting to outfall; the straining chamber is cartridge-form straining chamber; the front end of straining chamber is sealed by openable thrust cover board; the rear end of straining chamber is sealed by the baffle; the filter pad is instaleed in straining chamber opposite thrust cover board; the circumferential of filter pad clings to cartridge-chamber of straining chamber; the opposite sides of filter pad connects to gas piston, which crosses the baffle and realizes the axial shuttle with connecting bar next to gas piston relying on the first propulsion plant; the outfall is between baffle and filter pad; the feed head is located between pulling-cover board and filter pad; the primary sludge is pressed by pressure of transfer pump; the sludge after primary pressing is pressed with more pressure by gas piston, so the squeeze ratio of sludge improves.

The invention discloses method of producing liquid organic fertilizer by organic belonging to solid wastes disposal field, including: co-treating the residual sludge with 98 percent moisture content by ultrasound and sodium hydroxide to make the organic matters dissolve out; getting concentrated sludge and supernatant fluid after centrifugation; dehydrating the concentrated sludge after neutralization in a routine method; sand leaching and ultrafiltration treating the supernatant fluid twice after centrifugation to get a concentrated liquid containing macromolecule organic matter such as humic acid and the filtrate containing low molecular organic matter; the filtrate entering into the sewage treating plant for a primary treatment. Disposed dehydrated sludge cake has 70-80 percent moisture content and a reduction of the content of organic matter of 30-50%. The concentrated liquid by ultrafiltration is mainly composed of macromolecule organic matter and with a low content of heavy metal, and can be an organic liquid fertilizer, and complies the rule of using green food fertilizer. The invention is suitable for the sludge with a high organic matter content such as residual sludge and digested sludge.

The present invention discloses a high dryness dewatering method for high moisture content sludge. According to the method, spiral belt type concentration electro-osmosis vibration pressing integrated equipment is adopted to carry out one time dewatering on sludge with a moisture content of 99.2-95.0% to achieve the moisture content of 60.0-55.0%, wherein the spiral belt type concentration electro-osmosis vibration pressing integrated equipment comprises a material feeding system, an agent adding system, a material mixing system, a conveying system, a spiral concentration dewatering system, a belt type pressing dewatering system, an electro-osmosis pressing dewatering system, and a vibration pressing dewatering system.

The invention discloses a production method for ready-to-eat instant nutritive edible fungus soup, which belongs to the technical field of deep processing of agricultural products. The production method mainly comprises the steps of selecting, cleaning, precise cutting, mixed boiling, spreading, pre-freezing and microwave vacuum freeze drying on screened raw materials such as edible fungi, thus obtaining the product which is subjected to nitrogen-filled packaging after being taken out of storage. The raw materials of the edible fungus soup is dewatered by a microwave vacuum freeze drying technology according to a modern food nutrition principle, so that the original color, aroma, taste and nutrients of the product are kept to the hilt, and compared with those of a conventional process, the drying efficiency is remarkably improved, the production cycle is shortened, the production cost is effectively reduced, and the special sterilizing effect of microwaves further guarantees the product quality at the same time. The edible fungus soup produced by the method is flat in shape, bright in color and luster, rich in nutrition, good in water regaining effect and long in storage time, and a feasible new way is provided for deep processing and utilization of the edible fungi.

The invention relates to a process for producing polyphenyl thioether, comprising the following steps of:, mixing hydrogenous sodium sulfide, lithium chloride and N-methyl pyrrolidone in the weight ratio of (20-25): (2-6): (70-80), co-boiling the mixture and inert gases at 150-210 DEG C for distilling and dehydrating; separating solvent by refining; respectively adding santochlor, solvent and lithium chloride in anhydrous sodium sulfide, separating after complete reaction to obtain polyphenylene sulfide; compositely washing the polyphenylene sulfide to obtain pure polyphenylene sulfide; and reclaiming the lithium chloride by filtering, reclaiming the solvent and flashly evaporating dimethylbenzene solution in a two-period mode and cooling and crystallizing. The invention has the advantages of low cost, simple process, excellent performance of synthetic resin and high solvent recovering rate.

The invention relates to an environment-friendly-type polluted oil processing agent, which is prepared by a surfactant, a flocculating agent and a solvent through uniformly mixing in a mechanical blending mode, the surfactant is a cationic surfactant and/or an anionic surfactant and/or a non-ionic surface active agent and/or an ampholytic surfactant, the flocculating agent is one of polyferric sulfate, polymeric aluminum ferric sulfate, polymeric aluminium and aluminum sulfate, and the solvent is a mixture of one or more of methyl alcohol, ethyl alcohol, ethylene glycol, propylene glycol, propanetriol or ethylene glycol butyl ether. According to the invention, a plurality of surfactants are employed for compounding, so that electrostatic neutralization effect can be generated on the surface of oil droplets, the stability of an emulsion is worse, so that the purposes of demulsification and oil-water separation can be reached, the flocculating agent has the effect for removing small impurity and mud, as well as demulsificating, so that oil removal efficiency can be increased. According to the invention, dewatering efficiency of the polluted oil processing agent is high, the crude oil can be effectively separated from the polluted oil, the pollution of the polluted oil to the environment can be reduced, and the administration cost is saved.

The invention relates to a blast furnace slag processing device. The processing device comprises a water-quenching cooling device, a slag-water separating device and a slag flush water circulating device, wherein the input end of the slag-water separating device is connected with the output end of the water-quenching cooling device, and the output end of the slag-water separating device is connected with the input end of the slag flush water circulating device; and the output end of the slag flush water circulating device is connected with the input end of the water-quenching cooling device. The blast furnace slag processing device is provided with a condensing and recycling device, reduces the ground occupation area, the investment and the production running cost and has high quality of water and slag.

The invention discloses an oil-water separation system and a separation method. The oil-water separation system comprises a membrane filtration/demulsification system, a pre-separation system, a lightphase separation system and a heavy phase separation system; the membrane filtration/demulsification system comprises a membrane module and a circulating pump, and the pre-separation system comprisesa feeding tube, a hollow filter element and a steady flow zone; the light phase separation system sequentially comprises a material uniform distributor I, an upper coalescence separation zone and a light phase discharge port from bottom to top; and the heavy phase separation system sequentially comprises a material uniform distributor II, a lower coalescence separation zone, a light phase and heavy phase separation zone and a heavy phase discharge port from top to bottom. The separation system can be used to achieve continuous removal and preliminary of granular suspended matters in a material to be separated, rapid removal of free water drops or oil drops and demulsification and coalescence of a small amount of a heavy phase entrained in a light phase and a small amount of the light phase entrained in the heavy phase, has the advantages of short material residence time, high dewatering/deoiling efficiency and small device size, can realize deep removal of water, especially emulsifiedwater, in an oil product and deep removal of emulsified oil drops in sewage, has obvious advantages in oil-water separation of complex-composition and high-viscosity particle-containing severely emulsified oil products, and enables the moisture or oil removal rate to reach 99% or above.

The invention relates to a treatment method of organic solid waste. The treatment method comprises the following steps of: homogenizing the organic solid waste and then preheating, carrying out a thermal hydrolysis reaction on the preheated organic solid waste, then pushing the material into a depressurization tank and a buffer tank to be subjected to primary depressurization and secondary depressurization and then temporary storage, then carrying out heat exchange on the material, carrying out anaerobic digestion on the material subjected to heat exchange, carrying out vacuum degassing treatment on digested sludge in a digested sludge tank, dehydrating the treated digested sludge to form dehydrated sludge, conveying the dehydrated sludge to a drying room to be dried, and producing dried biogas residue. According to the treatment method of the organic solid waste, high temperature hydrolysis and anaerobic digestion technologies are adopted, the problems that resource is wasted when a burning method is adopted and secondary pollution can be easily caused when a burying method is adopted can be avoided, digestive efficiency in follow-up anaerobic digestion is improved, standing time of an anaerobic digestion process is also reduced, and sludge subjected to anaerobic digestion is subjected to vacuum degassing, so that carbon dioxide and ammonium nitrogen in the digested sludge can be effectively removed, and sludge dehydration efficiency is improved.

The invention discloses a plate-type sludge dewatering machine and a dewatering method therefore. The plate-type sludge dewatering machine adopts elastomers positioned among pressing filter plates, adjacent anti-thrust filter plates, air-inlet filter plates, feeding filter plates and thrust filter plates to form at least three hermetic pressing filter chambers variable in volume, utilizes the compression deformation and resilience of the elastomers to deep squeeze and dewater a filter cake, and adopts sealing plugs which are arranged in front of air-inlet holes of the air-inlet filter plates and the thrust filter plates and are on positions opposite to feeding holes on the feeding filter plates and the anti-thrust filter plates, wherein the feeding filter plates are adjacent and involutory to the air-inlet filter plates. After low-pressure filter dewatering is over and feeding is stopped, the sealing plugs block and seal the feeding holes so as to prevent sludge from flowing back and entering pipelines during pressing filtration. The dewatering method adopts the variable hermetic pressing filter chambers formed by the elastomers to perform pressing filtration and dewatering, and adds the operation of adopting the sealing plugs to block the feeding holes before high-pressure squeezing-dewatering operation. The invention has the advantages of high dewatering efficiency, strong adaptability, low energy consumption, low use cost and the like.

The invention relates to a continuous sludge dewatering method based on hydro-thermal treatment, and belongs to the field of sludge treatment. An external heat exchanger of a feeding unit is filled with high temperature filtrate, sludge is continuously introduced in the feeding unit, and the high temperature filtrate is used for preheating the sludge; the sludge after preheating enters a hydro-thermal treatment unit under the pushing of the feeding unit, and is heated to above 150 DEG C for a hydro-thermal reaction through a heating device arranged on the outside of the hydro-thermal treatment unit; the standing time of the sludge inside the hydro-thermal treatment unit is controlled by an accelerator arranged at the interior of the hydro-thermal treatment unit; partial sludge after hydro-thermal treatment is flown back to the hydro-thermal treatment unit; the sludge passing through the hydro-thermal treatment unit is introduced in a continuous extrusion dewatering unit to realize continuous dewatering of the hydro-thermal sludge, and a cavity in the dewatering process is at a sealed state. According to the dewatering method, based on the hydro-thermal treatment for improving the sludge structure and physicochemical characteristics, the energy sources are fully utilized and recycled while the energy consumption input is saved, and the sludge dewatering in a liquid form is realized continuously.

The invention belongs to the field of the manufacturing of organic fertilizers and discloses a method for producing an amino acid microbial organic fertilizer by using cassava residue and starch waste liquor. The method comprises the following steps of: dehydrating the cassava residue and the starch waste liquor until the final water content is 60 to 65 weight percent; adding 8 to 12 weight percent of humic acid, 3 to 7 weight percent of oil cake, 3 to 7 weight percent of rice bran and 0.3 to 0.5 weight percent of straw fermentation decomposing inoculant, and performing aerobic fermentation, wherein the fermentation temperature is 40 to 65 DEG C, and the fermentation cycle is 15 to 20 days; and uniformly mixing a functional strain which accounts for 3 to 5 percent of the total weight and is one or more of Bacillus mucilaginosus, bacillus subtilis, Bacillus licheniformis, Bacillus megaterium and Streptomyces jingyangensis, starch-containing waste liquor which accounts for 2 percent of the total weight and fermented residue, aerating the air and performing late curing for 5 to 7 days, and adding 1 to 3 percent of amino acid to obtain a finished product. Raw materials do not contain harmful bacteria and pathogens, harmful gas and odor are not generated in the fermentation, and the fertilizer can increase effect and stimulate plants to grow quickly.

The invention discloses membrane filter plates used for electro-osmosed sludge, a membrane filter press and a filter press. Each membrane filter plate is also provided with a relatively sealed membrane cavity formed by two membrane plates, wherein the membrane cavities are communicated with pressing water pipes; solid plates are arranged in the middle of the membrane cavities; filter cloths are arranged on the two sides of the membrane filter plates; cathode conductive filter screens are arranged on the backs of the filter cloths as liners and are connected with a cathode copper bar; grids of the cathode conductive filter screens are fit with sunk areas of the membrane filter plates; units are formed by the two parallel cathode membrane filter plates and form a relatively sealed sludge storage cavity; the sludge storage cavity is separated into two independent spaces by an anode plate connected with an anode copper bar. A sludge electro-osmotic dewatering device has a simple structure, operates reliably, can achieve reduction of the moisture content of the sludge below 50%, and improves the dewatering efficiency by 2-3 times compared with the membrane filter press.

The invention discloses a fast and high-efficiency sludge dewatering device, which comprises a shell, the bottom of the shell is symmetrically arranged with supporting feet, and a screen is arranged inside the shell, and the screen is in the shape of an arc groove. A turntable is set at the center of the arc, and the turntable is set on a rotating shaft in the casing. A rotating rod is arranged symmetrically on the center of the turntable, and a scraper is arranged at the end of the rotating rod. The top end of the right side of the screen is fixed on the casing. On the right side wall of the body, the left end of the screen is fixed to the inner bottom of the housing through a vertical rod; the top of the right side of the housing is provided with a feed port, and the housing on the left side of the screen is provided with an upper extrusion roller and a lower extrusion roller; The lower squeeze roller includes an outer drum, and the outer drum is a filter mesh drum; the invention skillfully arranges the screen structure and the scraping mechanism on the screen, which greatly improves the sludge dewatering efficiency, and at the same time, an upper squeeze roller is arranged corresponding to the bottom of the screen. The pressure roller and the lower squeeze roller, and clever use of the material hanging mechanism to scrape in the preliminary dewatered sludge to achieve further dehydration.

The invention provides a method for preparing the regeneration pellet fuel of urban household garbage, which adopts the following steps of: comprehensive treatment of household garbage, burdening, secondary mixing and crushing, material drying, fuel forming, cooling and packaging and the like. The regeneration pellet fuel of the urban household garbage prepared by the method has the advantages that: the burdening process is adopted in the process of preparing garbage fuel to balance a heat value of the garbage fuel; the garbage fuel is prepared by adopting fully-mechanized assembly line operation, the process of garbage disposal has no phenomenon of material retention, no secondary pollution and no generation of garbage percolate and reduces mosquitoes and flies and the stench grade to the lowest limit, and simultaneously, the heat value of combustible matters in the processing process is not lost basically; and the fuel is dried first before forming, and has the high heat efficiency.

The invention relates to a corn ear fast air drying machine and method. The air drying machine comprises a drum body; end covers are arranged at the top and bottom of the drum body; a heating bin, a wind homogenizing bin, an air drying bin and an exhaust channel are sequentially arranged in the cavity in the drum from bottom to top; electric heating pipes are arranged at the bottom of the heating bin; a blast hole is formed in the drum body; a wind homogenizing plate is arranged between the heating bin and the wind homogenizing bin; a temperature sensor is arranged in the wind homogenizing bin; a turntable is placed at the inner wall of the air drying bin and is provided with through holes; the drum body is provided with a loading side door convenient to open; a flexible clamping plate is arranged at the inner wall of an air duct cylinder; a temperature sensor and a humidity sensor are arranged in the exhaust channel; a liquid crystal display panel is arranged at the outer part of the drum body. The invention also discloses an air drying method, air outlets for entering the air drying bin are arrayed in sequence, large-flow air flows are formed, the air flows can be used for air drying at inner and outer sides of corn ears, air drying can be fast formed and the air drying speed is improved by more than four times compared with the natural air drying speed.