386results about "Byproduct vaporization" patented technology

The invention discloses a method for drying sludge through microwave pyrolysis, which relates to the technical field of sludge treatment and comprises the following steps: step 1, reducing the water content of the sludge in a mechanical dehydration manner, and then screening out lumps; 2, extruding the sludge, and uniformly laying the sludge on a microwave material distribution belt; 3, the material distribution belt penetrates through a tunnel type microwave generator, and the sludge is heated and dried through microwaves; 4, the dried sludge is separated from the cloth belt, and the sludge is collected; wherein a tunnel type microwave generator adopted in the third step comprises a guide roller and a pressing roller, the guide roller makes contact with the lower surface of the cloth belt conveying part, so that the cloth belt forms an inclined section, and the pressing roller is located behind the guide roller and makes contact with the upper surface of the cloth belt conveying part, so that the cloth belt forms an arc-shaped section tightly attached to the guide roller. In the invention, the turning plate does not need to be contacted with the cloth belt, so that the condition that the surface of the conveying belt is scratched is avoided.

The invention discloses a method and treatment system for reducing and recycling biological sludge based on catalytic cracking reaction, and the method comprises the following steps: adding a diluent and a scale inhibitor into dewatered biological sludge in a sewage treatment plant to carry out thermal refining treatment, so that the biological sludge is converted from a solid state to a quasi solid state, and the biological sludge after thermal refining treatment is obtained; the biological sludge subjected to thermal refining treatment is conveyed into a catalytic cracking reactor through fluidization, an oxidizing agent is added for a catalytic cracking reaction, capillary water contained in the sludge, water adsorbed by sludge particles and water in the sludge particles are partially released into free-state moisture through a controllable oxidation process of the biological sludge, and the free-state moisture is discharged into a sludge drying device; converting the biological sludge into a liquid state from a quasi-solid state, and decomposing organic matters in the biological sludge into carboxylic acid mainly comprising C2-C6 to obtain a carboxylic acid mixed solution; according to the method, the carboxylic acid mixed solution is subjected to heat exchange and cooling treatment and then is subjected to solid-liquid separation to obtain solid residues and filtrate, so that the biological sludge is reduced, and meanwhile, the resource utilization of carbon elements is realized.

The present invention discloses an endothermic spreading device for pyrolyzing oil sludge by chain plate transmission, comprising: a segmented cavity, which is a stepped sealing structure with high and low dislocation, the inner wall of the cavity is covered with heat insulation cotton, a feeding port is arranged at the top of the upper section of the cavity, and a discharging port is arranged at the bottom of the lower section of the cavity; a multi-stage chain plate transmission mechanism, and multiple chain plates are respectively installed in the segmented cavity; a shunting baffle plate, which is arranged above the chain plate; a spiral mixing mechanism, which is arranged above the chain plate; a transfer turning roller, which is arranged at the material falling place at the intersection of adjacent two-stage chain plate transmissions; and a horizontal pushing and pulling plate mechanism, which is arranged above the chain plate. The device of the present invention is beneficial to improving the even covering property and mixing property of the oil sludge on the chain plate, increasing the specific surface area of the oil sludge, and optimizing the endothermic reaction conditions through the combined actions of spreading, mixing, turning, squeezing and vibrating the oil sludge transmitted by the chain plate, so as to enable the oil sludge to be pyrolyzed efficiently and sufficiently.

The invention relates to the field of water treatment, and particularly discloses a method for preparing a catalyst based on Fenton iron sludge and activated sludge, the prepared catalyst and application, the method comprises the following steps: S1, crushing and sieving Fenton iron sludge, activated sludge and a binder; s2, mixing the sieved Fenton iron mud, activated sludge and binder with a pore-forming agent and carbon powder, and then adding a transition metal salt solution to prepare a primary mixture; s3, the primary mixture is dried after being formed, a blank is formed and then subjected to pyrolysis treatment, and the catalyst is prepared; the invention also discloses the catalyst prepared by the method and application of the catalyst in water treatment. According to the application, resource utilization of the Fenton iron sludge and the activated sludge is realized, the problem of enrichment of organic matters and heavy metals in wastewater in a current Fenton iron sludge resource technology is solved, the prepared catalyst can be used for catalyzing ozone, hydrogen peroxide or persulfate to degrade the organic matters in the wastewater, and the preparation method of the catalyst is simple.

The invention discloses a method for preparing g-C3N4 / biochar with high photocatalytic activity through molten salt pyrolysis of sewage and sludge and application of the g-C3N4 / biochar, and belongs to the technical field of energy catalysis and environmental restoration. The method for preparing g-C3N4 / biochar from sewage sludge through molten salt pyrolysis comprises the following steps: drying the sewage sludge to obtain sludge powder; mixing the sludge powder with melamine to obtain a mixed material precursor, then mixing the mixed material precursor with a molten salt medium, and performing pyrolysis treatment to obtain the g-C3N4 / biochar. According to the invention, sewage sludge is used as a carbon source to compound biochar and g-C3N4, so that the specific surface area of the material can be increased, electron transfer is promoted, and the photocatalytic activity is improved. The prepared photocatalytic material is narrow in band gap width, large in visible light absorption range and excellent in photocatalytic activity, meanwhile, sewage sludge serves as a carbon source, and reasonable utilization of waste is achieved.

The invention discloses a sludge, bagasse and calcium oxide co-pyrolysis biochar as a soil additive, and a preparation method and application thereof, and belongs to the technical field of environmental restoration. Sludge biochar synergistically modified by bagasse and calcium oxide is used as a soil additive, calcium oxide is introduced for catalytic co-pyrolysis through the synergistic effect of bagasse and calcium oxide, and sludge-bagasse-calcium oxide biochar is prepared; the optimization effect of the sludge-bagasse-calcium oxide biochar in heavy metal contaminated soil remediation is evaluated through heavy metal occurrence form analysis, ecological risk assessment and soil remediation effect experiments. According to the sludge-bagasse-calcium oxide biochar prepared by the method, the fixing capacity of the biochar on heavy metals and the fixing efficiency of the heavy metals in soil are improved, and the physicochemical properties and fertility characteristics of the heavy metal contaminated soil are improved; the characteristics of the sludge-bagasse-calcium oxide biochar for well fixing heavy metals and improving soil properties are exerted, the ecological risk is reduced, the physicochemical properties and fertility characteristics of the soil are improved, and the application of a heavy metal contaminated soil remediation process is optimized.

The invention belongs to the technical field of heavy metal treatment, and particularly relates to a synthesis method and application of a sludge biochar Schwertmannite composite material capable of synchronously mineralizing cadmium and arsenic. Municipal or industrial sludge is used as a raw material, sludge biochar rich in Ca, Fe and alkaline functional groups is prepared through pyrolysis, then the sludge biochar is deeply compounded with Schwertmannite through a high-energy ball milling technology, a core-shell-like nested structure is formed through induction, and a large number of reaction sites are exposed. Under the condition that As / Cd coexists, the surface of the composite material can be induced to generate stable minerals, a synchronous precipitation mechanism is formed, and As and Cd have an adsorption synergistic enhancement effect. The process is wide in raw material source, clean and efficient in preparation process and free of high-temperature hydrothermal or organic reagents, has cation exchangeability, alkali energy storage and carbon immobilization value, provides a new theory and material support for long-term environment immobilization of multi-metal pollutants, and has large-scale application potential.

The invention relates to a heavy metal stabilizer and a preparation method and application thereof, and relates to the technical field of heavy metal stabilizers. The preparation method comprises the following steps: weighing sepiolite, adding hydrochloric acid, carrying out constant-temperature water bath, carrying out centrifugal separation to obtain a precipitate, drying the precipitate, and grinding to obtain the heavy metal stabilizer for sludge pyrolysis. Natural sepiolite is used as a base material, acid activation treatment is carried out through hydrochloric acid to obtain the heavy metal stabilizer, the heavy metal stabilizer is used in sludge pyrolysis, in the pyrolysis process, the heavy metal stabilizer fixes heavy metal in a pyrolysis product carbon in a stable form through the effects of surface adsorption, ion complexation, high-temperature packaging and the like, and the heavy metal stabilizer is used for sludge pyrolysis. Therefore, the emission of heavy metals in the pyrolysis process is reduced, and the ecological risk and the use risk of the pyrolysis product carbon are reduced.

The invention relates to the technical field of oil sludge resource regeneration, and discloses a water oil sludge resource regeneration device based on a composite ultrasonic field and application. The device comprises an oil sludge parameter acquisition module, a resonant frequency analysis module, a sound field coupling control module, a phase shift interference analysis module and a separation strengthening execution module. The oil sludge parameter acquisition module acquires a rheological characteristic data set of the oil-containing sludge in real time; the resonance frequency analysis module generates a dual-target resonance frequency parameter based on the data set; the sound field coupling control module drives the piezoelectric transducer array to generate a focused ultrasonic field, and a sound field coupling model is constructed; the phase shift interference analysis module corrects the phase offset of the model and outputs a multi-band sound energy injection sequence; and the separation strengthening execution module regulates and controls the rotating speed gradient of the mechanical centrifugal unit, triggers membrane stack pulse backwashing, and finally generates regenerated base oil and a purified water phase product. According to the device, efficient regeneration of water-oil sludge resources is realized through cooperation of multiple modules.

The invention belongs to the technical field of sludge treatment, and discloses a desulfurization wastewater sludge treatment system which comprises a base, a clarification assembly; an isolation component; a pyrolysis assembly; a crushing assembly; a storage assembly and a filter assembly. Oil and water can be accumulated in the round shell from bottom to top, water can gradually move towards the bottom layer of liquid, oil can move downwards, the oil and the water can continuously penetrate between the coarse filter element and the fine filter element on the lower layer to be filtered twice, and finally the state that the oil is above the whole liquid level and the water is below the whole liquid level is achieved. The top blocking net is formed by longitudinally stacking a plurality of wave-shaped metal plates, a plurality of wave-shaped bent channels are formed, water is subjected to rising resistance at the position, water drops are difficult to adhere to the smooth metal plates, the conditions that the water rises rapidly on the liquid level, the water is squeezed to the position and is discharged accidentally are prevented, and the problems that an existing sludge dewatering machine is inconvenient to use and the like are solved. The problems that only water in sludge is separated out through one-time circulation work, and impurities in sewage cannot be further filtered and distinguished are solved.

The invention relates to a calcium-based difunctional composite material and a preparation method and application thereof, the calcium-based difunctional composite material is applied to pollution control in a sludge-low-rank coal co-pyrolysis process, the calcium-based difunctional composite material is composed of Ca2Fe2O5 and an adsorptive material, and the mass ratio of Ca2Fe2O5 to the adsorptive material is 1: 1. According to the calcium-based bifunctional composite material, the fixation rate of sulfur in pyrolytic carbon is remarkably increased, conversion of heavy metal to a more stable form is facilitated, and the leaching capacity and potential ecological risks of the heavy metal are remarkably reduced.

The invention belongs to the technical field of biochar preparation, water treatment and new materials, and discloses a composite material for sulfonamide antibiotic treatment, a preparation method and application, and the preparation method comprises the following steps: preparing sludge biochar SBC; mnO2 coated OSBC is prepared; aminated PCA is prepared; pCA-MnO2 (at) OSBC is prepared; the preparation method comprises the following steps: cutting absorbent cotton, ultrasonically cleaning with deionized water, drying, dispersing PCA-MnO2 coated OSBC into a polyvinyl alcohol PVA solution, dipping the absorbent cotton, dropwise adding glutaraldehyde for crosslinking, curing, dipping into a PCA-MnO2 coated OSBC suspension, and carrying out freeze-drying heat treatment. The composite material disclosed by the invention has relatively stable physical properties and chemical properties, can be efficiently separated from an aqueous solution and recycled after being degraded, and can achieve a relatively good degradation effect in various typical real water bodies.

The invention provides a method and a system for strengthening sludge treatment and nanometer material co-production through synergy of electrochemistry and ozone catalysis, and application of the method and the system, and relates to the technical field of environmental governance and resource recovery, in particular to the method for strengthening sludge treatment and nanometer material co-production through synergy of electrochemistry and ozone catalysis. Comprising the following steps: (a) performing electrochemical catalytic oxidation treatment on sludge slurry; (b) pyrolyzing the sludge treated in the step (a) to obtain volatile components; and (c) converting the volatile component into nano silicon dioxide through a vapor deposition reaction. According to the electrochemical-ozone catalysis synergistic enhanced sludge treatment and nano material co-production method provided by the invention, electrochemical catalytic oxidation, pyrolysis and vapor deposition processes are organically integrated, so that efficient removal of pollutants in sludge and synchronous conversion of high-value nano materials are realized.

The invention discloses a method for preparing CNTs and hydrogen-rich gas through sludge pyrolysis, sludge is subjected to pyrolysis after being conditioned by ferric salt, pyrolysis gas is collected and reduced under the action of a Ni-Fe / NF catalyst, the Ni-Fe / NF catalyst is prepared and obtained, and the Ni-Fe / NF catalyst is obtained by dipping foamed nickel in a mixed solution containing nickel nitrate and ferric nitrate and reducing the foamed nickel. Under the action of the Ni-Fe / NF catalyst, on the basis of not changing pyrolysis conditions and not influencing preparation of pyrolytic carbon and pyrolytic oil by sludge pyrolysis, the pyrolysis gas is synchronously converted into the Ni-Fe / NF catalyst with higher value, so that the economic values of the sludge and the pyrolysis gas are improved, the influence on the environment is reduced, and the engineering application of the sludge pyrolysis technology is favorably realized.

The invention relates to the technical field of adsorption materials, in particular to a preparation method and application of iron-crosslinked sodium alginate modified bagasse biochar, which comprises the following steps: respectively pretreating red mud and bagasse, and then mixing the pretreated product with melamine to obtain a mixed material; the mixed material is placed in a protective atmosphere for pyrolysis treatment, and modified bagasse biochar is obtained; mixing the modified bagasse charcoal with a sodium alginate solution, performing ultrasonic treatment, heating and stirring to obtain a blended solution; the preparation method comprises the following steps: mixing bagasse and sodium alginate in a mixed solution, dropwise adding the mixed solution into a ferric chloride solution for standing and cross-linking, and carrying out washing treatment, freeze drying and grinding to obtain sodium alginate modified bagasse biochar, the method adopts bagasse as a biochar raw material, and introduces a magnetic material, a nitrogen-containing substance and sodium alginate to modify the biochar function; the surface active sites of the prepared material are increased, the adsorption capacity on tetracycline hydrochloride is improved, and the resource high-value utilization of the red mud and bagasse solid waste is realized.

The invention provides a sludge-based iron-based catalyst and a preparation method and application thereof, and belongs to the technical field of catalysts and sewage treatment. The preparation method of the sludge-based iron-based catalyst comprises the following steps: respectively drying, crushing and sieving Fenton iron sludge and biochemical sludge to obtain a Fenton iron sludge dry material and a biochemical sludge dry material; and mixing the dry Fenton iron sludge material and the dry biochemical sludge material, and then performing pyrolysis under an anaerobic condition to obtain the sludge-based iron-based catalyst. The preparation method is simple, no chemical agent is used, the raw material is waste mud, and the purpose of treating waste with waste is achieved. The prepared catalyst can be used for efficiently degrading landfill leachate MBR effluent.

The invention provides iron-manganese composite oxide modified biochar (FM-SBC) as well as a preparation method and application thereof, and relates to the technical field of modified biochar. The method comprises the following steps: drying, grinding, modifying, drying and pyrolyzing excess sludge of a secondary sedimentation tank of an urban sewage treatment plant, and modifying the excess sludge by using an iron-manganese composite oxide to obtain the iron-manganese composite oxide modified biochar. The iron-manganese composite oxide modified biochar can be used as an efficient catalyst of persulfate (PS), provides technical support for treatment of refractory organic wastewater by enhancing the catalytic effect and enhancing efficient degradation of refractory organic pollutants such as azo dyes, and is of great significance to sustainable development of the environment.

The invention provides a method for preparing phosphorus-rich biochar through sludge pyrolysis-calcination two-step heat treatment, and belongs to the technical field of harmless treatment and resource utilization of municipal sludge. The preparation method comprises the following steps: (1) heating and drying municipal sludge, grinding, crushing and sieving to obtain sludge particles; (2) pyrolyzing the sludge particles in the step (1) in a microwave pyrolysis device, and cooling to obtain sludge semicoke; and heating and calcining the sludge semicoke in the step (2) in a nitrogen or carbon dioxide atmosphere, and cooling to obtain the phosphorus-rich biochar. Compared with commercial activated carbon, the phosphorus-rich biochar prepared by the method disclosed by the invention is rich in a large amount of phosphorus element, the source is more environment-friendly, and the harm caused by mass production and accumulation of municipal sludge is solved; the phosphorus-rich biochar disclosed by the invention is more practical, can be applied to grassland gardens instead of phosphate fertilizer, or can be mined as a phosphate ore source instead of phosphate ore.

The invention discloses a pyrolysis carbonization treatment system for sludge and a carbonization treatment method thereof. The pyrolysis carbonization treatment system comprises a sludge pretreatment device, a multi-section carbonization furnace and a tail gas treatment device which are communicated in sequence, the sludge pretreatment device comprises a plate-and-frame filter press and a paddle dryer which are connected with each other; a combustion-supporting device for receiving drying tail gas and supporting combustion for the multi-section carbonization furnace is arranged at the top of the paddle dryer; the multi-section carbonization furnace comprises a drying layer, a carbonization layer and an activation layer which are communicated from top to bottom, and a steam injector for injecting steam into the activation layer and a combustor for secondarily heating the activation layer are mounted on the outer wall of the multi-section carbonization furnace; compared with the prior art, the separation between the drying tail gas and the sludge is realized through the paddle dryer, the generated drying tail gas is supplied to the multi-section carbonization furnace for combustion under the action of the combustion-supporting device, and the anoxic combustion in the multi-section carbonization furnace is realized under the action of limited sludge gas, so that the carbonization requirement of the sludge in the multi-section carbonization furnace is met; and the sludge in the multi-section carbonization furnace is pyrolyzed, carbonized and activated.

The utility model relates to the technical field of sludge treatment and disposal, and discloses a high-solid-content sludge hydrothermal carbonization treatment device which comprises a sludge bin, the mixed material preheating tank is provided with a first feed port, a second feed port, a steam inlet and a discharge port, and the sludge bin is communicated with the first feed port; the hydrothermal reaction kettle is communicated with the discharge hole through a first pipeline; the flash tank is communicated with the output end of the hydrothermal reaction kettle through a second pipeline, the flash tank is provided with a steam outlet, a first discharge port and a second discharge port, the steam outlet is communicated to the steam inlet through a third pipeline, and the second discharge port is communicated to the second feed port through a fourth pipeline; the cooling tank is communicated with the first discharge hole through a fifth pipeline. The high-solid-content sludge hydrothermal carbonization treatment device disclosed by the utility model can effectively reduce treatment energy consumption and improve treatment efficiency.

The application provides a continuous sludge pre-drying method and system, and relates to the technical field of sludge treatment.The application provides a continuous sludge pre-drying system, which comprises sequentially connected sludge storage devices, sludge slitting devices, primary mixing devices, pre-drying devices and secondary mixing devices.The application also provides a pre-drying method, which comprises the following steps: conveying sludge in the sludge storage devices to the sludge slitting devices to slit the sludge; adding adsorbents to the slit sludge to obtain mixed sludge, and conveying the mixed sludge to the primary mixing devices to perform primary crushing and mixing; outputting the sludge discharged from the primary mixing devices to the pre-drying devices, outputting the pre-dried sludge to the secondary mixing devices to perform secondary crushing and mixing, and obtaining pre-dried sludge.The system and method provided by the application can realize short sludge pre-drying cycle, high sludge drying efficiency and stable sludge drying effect.

The invention discloses an oily sludge thermal desorption treatment system and a treatment process, the oily sludge thermal desorption treatment system comprises a tank body, the feeding end of the tank body is rotatably provided with a connecting sleeve, the oily sludge thermal desorption treatment system also comprises a feeding pipe, the feeding pipe is fixedly connected in the connecting sleeve, one end of the feeding pipe is sleeved with a material guide pipe, the material guide pipe is movably arranged on the feeding pipe, one end of the connecting sleeve is provided with a cleaning piece, and the cleaning piece is in transmission connection with the tank body. According to the device, the movement of the material guiding pipe is controlled through oil sludge in the feeding pipe, so that the material guiding pipe extends into the tank body along the feeding pipe, the oil sludge is extruded out in a strip shape through the discharging hole, the strip-shaped oil sludge extruded out of the material guiding pipe is broken through the cleaning piece, and the phenomenon that the oil sludge is accumulated at the feeding end of the tank body in a lump mode is reduced; the accumulated oil sludge is prevented from being coked on the inner wall of the high-temperature tank body, the material guide pipe is driven by the cleaning piece to rotate along the axis of the feeding pipe, the inner wall of the feeding pipe is cleaned through the arc-shaped strip fixedly connected in the material guide pipe, and the phenomenon that the feeding pipe is blocked due to the fact that the residual oil sludge is dried and caked in the feeding pipe is avoided.

This invention discloses a low-leakage, high-stability magnetic sludge biochar adsorbent, its preparation method, and its application, comprising the following steps: S1: preparing a sludge biochar matrix from dewatered sludge; S2: mixing the sludge biochar matrix obtained in step S1 with nano-magnetic powder, and performing high-energy ball milling under an inert atmosphere to obtain a composite powder with a physically interlocked structure, thereby preparing the low-leakage, high-stability magnetic sludge biochar adsorbent. This invention provides a structurally stable, high-adsorption-performance, and environmentally friendly magnetic sludge biochar adsorbent that can effectively remove polyether ionocarrier antibiotics (such as maduramycin) from water, showing promising practical application prospects and environmental benefits.

The invention belongs to the technical field of sludge resource utilization, and particularly relates to a magnetic sludge biochar preparation system and method based on gradient utilization of waste heat of a thermal power plant. The preparation method of the magnetic sludge biochar comprises the following steps: performing carbonization treatment on sludge to obtain sludge biochar; the sludge biochar is modified, and the pore structure of the sludge biochar is optimized; and mixing the modified sludge biochar with a magnetic material, and carrying out magnetization treatment to obtain the magnetic sludge biochar. The method has the beneficial effects that the preparation process of the magnetic sludge biochar relates to three-stage gradient utilization of waste heat (high-temperature flue gas, high-temperature steam and circulating water cooling water) of a thermal power plant, so that the preparation cost of the magnetic sludge biochar is saved; the preparation method of the magnetic sludge biochar is high in production efficiency, low in energy consumption and stable in product quality, efficient utilization of sludge resources can be achieved, the problems in the prior art are effectively solved, and sustainable development of municipal sludge resource utilization is promoted.

The application belongs to the field of heavy metal water pollution treatment, and relates to a method for rapidly and efficiently oxidizing trivalent arsenic through enhanced electron transfer, which comprises multifunctional biochar preparation and efficient oxidation process design. The method uses sludge as a biochar precursor, obtains multifunctional biochar with strong alkalinity, high specific surface area and super electron conduction through high-temperature pyrolysis, directly introduces oxygen into an As(III) solution, adds the biochar into the system after the aeration is completed, and fully stirs. The method is simple, economically feasible, has extremely high oxidation efficiency, does not require additional chemical reagents, has no reagent residues, and does not require external light or electricity. The non-free radical oxidation path dominated by electron transfer and singlet oxygen is not easily affected by inorganic ions and humic acid in actual water bodies, has strong anti-interference ability, and has a wide application range. The application not only helps to enrich the catalytic oxidation theoretical system, but also greatly improves the practical feasibility of biochar application, and has good environmental and economic benefits.

At least one aspect of the present technology provides a self-contained treatment plant for converting organic and high-water waste, such as fecal sludge and garbage, into electricity while also generating and collecting potable water.

The invention provides sludge biochar as well as a preparation process and application thereof, and relates to the technical field of biochar materials. The invention relates to a preparation process of sludge biochar. The preparation process comprises the following steps: S1, conditioning sludge to obtain pretreated sludge; s2, dewatering the pretreated sludge to obtain sludge dewatered sludge cakes; s3, performing pyrolysis treatment on the sludge dewatered sludge cake to obtain the sludge biochar. The obtained sludge biochar is low in environmental risk and high in fertilizer efficiency.

The invention discloses low-energy-consumption municipal sludge dehydration and pyrolysis integrated equipment. The equipment comprises a sludge crushing mechanism, a sludge pulsation dehydration mechanism, a sludge vacuum dehydration mechanism and a sludge pyrolysis mechanism which are connected in sequence, the sludge crushing mechanism comprises a sludge crushing containing barrel shell, a crushing main stirring shaft is rotationally connected into the sludge crushing containing barrel shell, and a plurality of sludge crushing rods are fixed to the crushing main stirring shaft; the sludge pulsation dewatering mechanism comprises a dewatering mechanism containing box, an extrusion dewatering input pipe and an extrusion dewatering output pipe which are coaxially arranged are fixed to the left end and the right end of the dewatering mechanism containing box respectively, and a flexible pulsation dewatering pipe is arranged between the extrusion dewatering input pipe and the extrusion dewatering output pipe; the equipment has the core advantages of integrated integration, low-energy-consumption design, efficient treatment, precise control, environmental protection and reliability, the whole treatment process can be seamlessly joined, the problems of sludge scattering, secondary pollution and moisture content rising in traditional segmented treatment are avoided, and the transfer energy consumption and the labor cost are reduced.

A process for treating waste liquids generated during a petrochemical process, the waste liquids comprising at least one first aqueous wastewater stream and at least one second organic fluid-based waste liquid stream, the method comprising the steps of: a) subjecting the at least one first aqueous wastewater stream to at least one freeze concentration stage to produce a third clean water stream and a fourth concentrated aqueous wastewater stream; and b) subjecting the at least one second organic fluid-based waste liquid stream to at least one separation stage to produce a fifth clean water stream and a fourth concentrated aqueous wastewater stream. and a sixth concentrated organic fluid-based waste stream; and c) passing the fourth concentrated aqueous wastewater stream and the sixth concentrated organic fluid-based waste stream to an incinerator and incinerating the fourth concentrated aqueous wastewater stream and the sixth concentrated organic fluid-based waste stream in the incinerator, wherein the method is controlled so that the incineration of the sixth concentrated organic fluid-based waste stream generates at least 70% of the energy required to incinerate the fourth concentrated aqueous wastewater stream.

The invention relates to the technical field of environmental protection, and discloses a Fenton sludge pyrolysis recycling device which comprises a heating system, a sludge rolling and conveying system and a pyrolysis gas collecting and conveying system, the heating system comprises an inner cylinder and a heat storage assembly; a flame gun is mounted on one side of the inner barrel, and a smoke outlet is formed in the other side of the inner barrel; the heat storage assembly is installed on the inner wall of the inner barrel, and an air inlet structure is arranged on the side wall, close to the flame gun, of the inner barrel. The sludge rolling conveying system comprises an outer cylinder and an auger conveying assembly; the inner cylinder is sleeved with the outer cylinder, and the auger conveying assembly is installed between the inner cylinder and the outer cylinder. A feeding assembly and a discharging assembly are installed on the two sides of the outer cylinder correspondingly. The pyrolysis gas collecting and conveying system comprises a heat preservation assembly, a pyrolysis gas collecting pipe and a pyrolysis gas conveying pipe, and filtering equipment and a fan are installed on the pyrolysis gas conveying pipe. Self-burning of pyrolysis gas in the device can be achieved, the overall heat utilization rate and the treatment effect are improved, the structure is simple, the space utilization rate is high, starting and stopping are convenient, and the manufacturing cost is reduced.