128results about How to "Increase solid content" patented technology

The invention is named as 'a joint-conditioning dehydration method for sludge', belonging to the technical field of environmental engineering and sludge treatment. The joint-conditioning dehydration method comprises the following steps of: adding H202 and FeSO4 into the sludge (with pH being equal to 5) acidified by mineral acid, degrading organic matter by virtue of strong oxidation of a Fenton reagent, and dissolving and cracking microbial cells and extracellular polymeric substances in the sludge; adding a surfactant CTMAB (Cetyl Trimethyl Ammonium Bromide) into the sludge to reduce the surface tension of the sludge and change the surface characteristics of the sludge, and transforming a part of interstitial water into free water; and flocculating sludge particulates with disperse structure, small particle diameter and large specific surface area by virtue of flocculation action of polyacrylamide (CPAM) to the sludge particulates. After the sludge is subjected to joint conditioning of the Fenton reagent, the surfactant and the CPAM, the moisture content of the sludge after being centrifugally dewatered is reduced to 78.2% from 87.7%, and the output of mud cakes is reduced to 0.115t/m<3> from 0.218t/m<3>, therefore, the dehydration property of the sludge can be improved remarkably, the investment and operation costs are reduced effectively, and an ideal sludge reduction goal is reached.

The invention provides a high-looseness tobacco sheet applied to a low-temperature cigarette and a production process. The tobacco sheet comprises, by mass, 50-80% of tobacco raw material powder, 10-30% of atomizing agent, 0.5-10% of adhesive, 0.01-1% of leavening agent, 5-15% of tobacco essence perfume and 0-30% of water and is manufactured by means of a roll pressing production process. During manufacturing of the sheet, the production process is not changed, only the leavening agent is added to a raw material formula to loosen the sheet, and absorption of a large quantity of the atomizing agent and the external perfume is facilitated. When a consumer smokes the low-temperature cigarette prepared from the sheet, the obtained smoke amount is larger, and the obtained physiological satisfaction feeling is stronger. At the same time, the production process of the sheet is mature, simple and high in controllability, and the quality is stable.

The technological process of utilizing percolation liquid from domestic garbage landfill belongs to the field of garbage treating technology. The present invention aims at raising the percolation liquid treating level to reach the exhaust standard. The technological process of utilizing percolation liquid from domestic garbage landfill includes the following steps: 1) pumping the percolation liquid to the first stage of ultrafiltering system and treating in pressure difference of 0.3-0.5 MPa, 5-10 times concentration and membrane separation to obtain the first stage of concentrated liquid; 2) pumping into the second stage of ultrafiltering system and treating in pressure difference of 1.0-1.5 MPa, 4-5 times concentration and membrane separation to obtain the second stage of concentrated liquid; and 3) treating in immersing, burning and evaporating system at burning temperature over 750 deg.c, immersing depth 0.3-0.6 m and 5-10 times concentration to obtain liquid organic fertilizer.

The invention discloses a sludge dewatering method used for an urban sewage plant. The method comprises the following steps of: putting original sludge of the urban sewage plant in a container, wherein the moisture content of the sludge is more than 90 percent, and stirring fully and uniformly; adding mixed coagulant aids of dolomite and quick lime into the obtained sludge and uniformly stirring; adding inorganic flocculant, stirring uniformly, adding a polyacrylamide (PAM) flocculating agent, and stirring uniformly; and feeding the obtained sludge into a plate-and-frame filter press, squeezing and dewatering the sludge, keeping pressure for 5 to 30 minutes, and decompressing and discharging. The sludge of the urban sewage plant is conditioned and flocculated further, and then is filtered, squeezed and dewatered, so that moisture in the original sludge in the sewage plant, which is not dewatered by a belt filter press, can be dewatered effectively, the treatment process of the sludge dewatering method is simple, and the sludge dewatering method is low in treatment cost.

The invention relates to an environmentally-friendly quick drying aqueous glass imitation card transfer paint and a preparation method as well as application thereof. The paint comprises the following component raw materials in parts by weight: 80-95 parts of aqueous resin, 0-8 parts of cosolvent, 0-8 parts of de-ionized water, 0-3 parts of filming auxiliary agent, 0-3 parts of anti-scratch agent, 0-0.5 part of moistening agent, 0-0.2 part of rheological control agent and 0-0.3 part of defoaming agent, and can be used for manufacturing glass imitation card paper or glass imitation copper plate paper. Compared with the prior art, the paint has the advantages of environmental friendliness, low smell, low VOC (Volatile Organic Compound), cost advantage, low production cot, high solid content, high drying speed, superior stripping property, high smoothness, high glossiness, simple application process, capability of recycling a transfer thin film for multiple times, no need of passing through a large-diameter mirror chromium plating drying cylinder like the conventional glass card and high printing adaptability.

The invention discloses a method for removing impurities such as suspended matters and colloids and the like in water by adding a modified settling agent by the action of flocculating/coagulating sedimentation, and belongs to the technical field of water supply and drainage technology and environmental protection technology. The method comprises the following steps of: soaking the settling agent of silica sand particles with the grain size of 50 to 300 meshes in 0.1 to 5 percent solution of organic macromolecular flocculant/coagulant for 0.5 minutes to 48 hours, wherein the surface of the soaked silica sand is coated with and adsorbs a layer of molecular long chains of the organic macromolecular flocculant/coagulant; putting the treated particles of settling agent into the water to be treated at proper time, and slowly stirring the mixed solution for 0.5 to 30 minutes, wherein the rotary speed is controlled to 20 to 100r/min, so that the pretreated particles of settling agent are fully contacted with the suspended matters in the sewage; and stopping stirring, standing for sedimentation for 1 to 60 minutes and performing solid-liquid separation so as to remove the suspended matters in the sewage by coagulation efficiently. The method has the advantages of high capturing capability of the settling agent, stable structure of floccules, low water content, quick settlement of floccules and good treating effect, and can obviously reduce the using amount of the flocculant/coagulant or improve the flocculation/coagulation effect.

The invention provides a synergetic treatment method of energy-saving dehydration and efficient heavy metal removal of sewage and sludge. The method comprises the following steps: mechanical dehydrating crude sludge, adding composite additive which is 1-3 percent by mass of the dehydrated sludge into the sludge; uniformly mixing the sludge and the composite additive, and transferring the mixture into a hydrothermal reactor, reacting for 30-60 min at 150-180 DEG C under the pressure of 400-1,000kPa; cooling after the reaction is completed, filter-pressing and dehydrating by using a plate-and-frame filter press; regulating the pH value of the filter-pressed sludge to 5.5-10 by quicklime and discharging to the outside to serve as soil, or regulating the Ca/S molar ratio to 1.0-1.2 by adding quicklime and carrying out incineration treatment. According to urban domestic sewage and sludge treated by the method, the solid content can be increased, the concentration of heavy metal can be reduced, organic noxious substances can be reduced, applicability of sludge soil utilization can be improved, and emission of incineration treatment pollutants can be reduced.

The invention relates to a water-based organic ceramic sprayed aluminum veneer and a manufacturing method thereof, and belongs to the technical field of curtain wall decorative boards. The water-based organic ceramic sprayed aluminum veneer comprises a passivation layer I, an aluminum baseplate, a passivation layer II, a bottom paint layer and a surface paint layer in sequence from top to bottom, wherein the bottom surface and the surface of the aluminum baseplate are conducted by passivation processing to obtain the passivation layer I and the passivation layer II respectively; the bottom paint layer is formed by spraying a water-based organic ceramic material for 15-20 <Mu>m on the passivation layer II; the surface paint layer is formed by spraying the water-based organic ceramic material for 20-30 Mum on the bottom paint layer. The sprayed aluminum veneer has the advantages that the aluminum veneer is controllable in range of glossiness, high in intensity and hardness, scratch resistant, acidproof, highly flame-retardant, and aging-resistant, provided with self-cleaning performance, and large in color choosing space.

The invention relates to an efficient sludge dewatering flocculant. The efficient sludge dewatering flocculant is prepared from a mixture A and a mixture B, wherein the mixture A is prepared from the following components in parts by weight: 100 parts of diatomite containing 1-5 percent of soil fungi, 10-30 parts of activated carbon, 20-50 parts of cement and 2-5 parts of organic flocculants; the mixture B is prepared from at least three of the following components in parts by weight: 16-32 parts of sodium thiosulfate, 16-32 parts of iron oxide, 48-96 parts of calcium sulfate, 32-80 parts of aluminum sulfate and 16-32 parts of alkali carbonate. After the efficient sludge dewatering flocculant is directly added in water containing sludge to be uniformly stirred, mechanical dewatering is carried out, and water content of the sludge can be lowered below 60 percent; the removed water can be discharged to reach standard without needing to be further treated; heavy metals in the sludge are fixed in the sludge and can not be absorbed by plant roots and disperse in soils and water; the dewatered sludge can serve as a fertilizer raw material, a fuel raw material and a building raw material without secondary pollution.

The invention provides tobacco sheets applied to low-temperature cigarettes and having flowery flavor and high porosity and a production technology. The tobacco sheets are prepared from, by mass, 50-80% of tobacco raw material powder, 10-30% of atomizer, 0.5-10% of adhesive, 0.01-1% of swelling agent, 2-15% of plant flower powder and 0-30% of water. The tobacco sheets are manufactured by means ofthe rolling-process production technology. The production technology is not changed in the process of manufacturing the sheets, and the swelling agent is added into the formula of the raw materials, so that the sheets are loose, and a large amount of atomizer and additional essence are conveniently absorbed. The plant flower powder is utilized for replacing the additional essence, a consumer enjoys the pleasant and distinctive flowery flavor when smoking the cigarettes, the obtained smoke amount is higher, and the physiological satisfaction feeling is stronger, which is closer to traditional cigarettes; meanwhile, the production technology for the sheets is mature, simple, high in controllability and stable in quality.

The invention relates to a utilization method of crude sodium pyrophosphate and specifically discloses a method for producing sodium tripolyphosphate by the utilization of crude sodium pyrophosphate. The method of the invention comprises the following steps: (1) washing crude sodium pyrophosphate; (2) filter-pressing washed slag; (3) dissolving filter cake, adding an impurity remover into the solution to remove metal ion; (4) press-filtering the deimpurity solution; (5) adding a decolorising agent to remove pigment, acidifying by adding phosphoric acid, accelerating dissolution, and finally adjusting pH value by adding alkali lye; (6) cooling for crystallization, and carrying out solid-liquid separation to obtain sodium pyrophosphate crystal; and (7) using the sodium pyrophosphate crystal as a production raw material for production of sodium tripolyphosphate. The invention has the following advantages: 1) recovery of waste resources is realized; 2) implementation is simple, and production efficiency is high; 3) purity of the sodium pyrophosphate crystal is high; and 4) production cost of sodium tripolyphosphate is reduced.

The invention relates to a cellulose composite solvent system and application thereof. The composite solvent is composed of the following constituents in percentage by weight: 6%-12% of NaOH, 4%-15% of urea, 4%-15% of thiourea, 0.5%-3% of ZnO, 1%-3% of polyacrylamide and 52%-84% of H2O; and the composite solvent is used for preparing a cellulose spinning solution, and the preparation comprises the following steps of: baking the cellulose powder, pre-freezing, preparing cellulose solution, and processing in a twin-screw extruder, thus obtaining the cellulose spinning solution. The composite solvent system is convenient for preparing the cellulose spinning solution, can effectively dissolve the cellulose under the condition of low temperature and high shear, and is non-toxic and non-volatile, simple and easy to recycle, and low in environment pollution, so that the cellulose can be used widely as a renewable energy substance.

The invention relates to a base-catalyzed decomposition device and method for industrial waste containing a chlorinated organic compound. A reaction system of the device is communicated with chlorinated organic polluting waste via a reaction reagent mixing device, communicated with a nitrogen gas protection system, connected with a temperature control system, communicated with a residue processing device via a deposition and centrifugal separator, and communicated with a secondary activated carbon absorption tower via a condensing reflux device, tail gas from the secondary activated carbon absorption tower is released into the atmosphere, and the deposition and centrifugal separator is communicated with the pipeline of the reaction reagent mixing device; and the decomposition method comprises the following steps of: firstly, adding the chlorinated organic pollutant, the hydrogen donors from the reaction reagent mixing device and the like into the reaction system; secondly, starting the nitrogen gas protection system; and finally, heating and stirring to realize base-catalyzed dechlorination decomposition of the pollutant. The decomposition method has the advantages of high reaction rate, low reaction temperature, small temperature fluctuation of the reaction system, large actual reaction quantity of the pollutant and small risk of secondary pollution.

The invention relates to integrated water purifying equipment for concurrent inclined plate precipitation. A main body is concentrically partitioned into inner, middle and outer cylinders, which are respectively a flocculation zone, a filter zone and a concurrent inclined plate precipitation zone, wherein a water distributing zone is arranged at the upper segment of the concurrent inclined plate precipitation zone; an inclined plate group zone is arranged at the middle segment; a sludge concentrating chamber is arranged at the lower end; a water collecting zone is arranged between the water distributing zone, the inclined plate group zone and the filter zone; the bottom part of the water collecting zone is respectively communicated with the inclined plate group zone and the filter zone through pores; a circle of inclined plates are evenly distributed in the inclined plate group zone; the inclination angles theta of the inclined plates are 30-45 degrees; and the pores are arranged at the positions between the tail ends of two adjacent inclined plates at the bottom part of the water collecting zone and are communicated with the inclined plate group zone and the water collecting zone. The concurrent inclined plate precipitation technique is applied to the integrated water purifying equipment; flocculation, concurrent inclined plate precipitation and filtering are combined together; and the treatment process is independently and synergetically finished, so that the flocculation, concurrent inclined plate precipitation and filtering fully develop the advantages; and the integrated water purifying equipment is good in treatment effect, compact and reasonable, small in floor area, and convenient to install.

The invention discloses a high-intensity active carbon sedimentation basin. The sedimentation process thereof is characterized by comprising the following steps: reflowing the enriched sludge and the active carbon to a mixing basin by using the concentrating and separating effects of the sedimentation process and the active carbon on the turbidity materials, and obtaining the mixed liquid of which the concentrations of the sludge and the active carbon particles are high; and strengthening the removal of the turbidity materials and the organics in water by the capturing and adsorbing effects of the two carriers. According to the invention, the defect of the original conventional treating process that the utilization ratio of the added active carbon is low is overcome, and relatively stronger removal ability for stink smell, chroma and organics is provided for the conventional sedimentation process. The high-intensity active carbon sedimentation basin has the characteristics of good water quality, small drug consumption, high solid content of sludge, small occupation area, flexible operation control and strong adaptation ability on raw water quality. The sedimentation basin is developed based on the III-type raw water or raw water higher than III type, and has double functions of conventional treatment and deep treatment; and a completely new path to treat the serious raw water is provided. The sedimentation basin can be applied to the conventional treatment process or combined with the deep processing process when the quality of the raw water is poor.

The invention discloses an ultralow-water-content sludge dewatering and drying system and a drying treatment method thereof. The ultralow-water-content sludge dewatering and drying system comprises adewatering device, a drying device and a waste gas treatment device. The drying device comprises a drying container, and a primary crushing mechanism, a mud cake forming mechanism and a secondary crushing mechanism that are sequentially arranged in the length direction of the drying container at intervals; wherein the primary crushing mechanism is arranged corresponding to a discharge port of thedehydration device, the sludge cake forming mechanism is used for filter-pressing sludge passing through the primary crushing mechanism into a sludge cake, the secondary crushing mechanism is used forcrushing the sludge cake passing through the sludge cake forming mechanism into sludge particles, and high-temperature gas in the incineration tower is introduced into an inner cavity of the drying container. A waste gas recovery opening is formed in the wall body of the drying container, one end of the waste gas recovery assembly is arranged corresponding to the waste gas recovery opening and the other end of the waste gas recovery assembly is introduced into the incineration tower, and therefore, sludge can be dewatered and dried quickly and sufficiently.

The invention provides a thermal hydrolysis and anaerobic digestion processing method for household refuse and a device thereof. The processing method is used in a device comprises a sorting system, a thermal hydrolysis system, an anaerobic digestion system, a biogas treatment system, a steam supply system and a dewatering system, and comprises the step of first pumping sorted organic refuse into the slurry tank of the thermal hydrolysis system and uniformly mixing, pumping the mixture in the slurry tank into a reaction tank, then pumping the mixture in the reaction tank into a pressure relief tank, and finally importing the mixture in the pressure relief tank into a heat exchanger for cooling. After the mixture obtained via the thermal hydrolysis processing is processed by the anaerobic digestion system, the purposes of harmlessness and reduction of household refuse are ultimately realized. Compared with the prior art, the processing method has advantages of being high in efficiency, low in processing cost, and suitable for continuous operation processing; and by using the method, the dehydration rate of biogas feed can be improved by 30%, thereby reducing transportation costs.

The invention discloses a continuous twin-roll counter-pressure dewaterer which mainly comprises a frame (1), a power device (2), a transmission device (3), an upper roll component (4) and a lower roll component (5), wherein, the transmission device (3) is provided with an input shaft (12) and a plurality of output shafts (13); the input shaft (12) is connected with the power device (2) via a shaft joint I (14); an upper-row output shaft (13) is connected with the upper roll component (4) via a universal joint (15); a lower-row output shaft (13) is connected with the lower roll component (5) via a shaft joint II (16); and the upper roll component (4) and the lower roll component (5) are in roll-to-roll rotary relay type rolling fit. By dewatering under the action of pressure between rolls with small contact area, the invention has the advantages of large squeezing force and short squeezing time, ensures the solid content rate of mud cakes and solves the technical problems of twin-roll counter-pressure dewatering and draining.

The invention provides a sludge integrated treatment method and system, the sludge integrated treatment method comprises pyrohydrolysis pretreatment and anaerobic digestion of sludge and heat drying treatment of biogas residue after anaerobic digestion, and the temperature of anaerobic digestion is 35-38 DEG C. Through combination of pyrohydrolysis pretreatment, medium-temperature anaerobic digestion and thermal drying treatment, the sludge with the water content of 20-30% can be obtained by treating the raw sludge. Meanwhile, the organic matter removal rate is high, the methane yield is high,the treatment period is short, and reduction, recycling and stabilization of the sludge are greatly achieved.