73results about How to "Realize reduction processing" patented technology

The invention discloses a comprehensive household garbage treatment process which comprises the following steps: crushing household garbage; screening, and respectively performing gravity separation and magnetic separation after screening, wherein combustible organic matters and light combustibles are separated in the gravity separation process, and soil and metals for greening are separated in the magnetic separation process; performing magnetic separation on materials subjected to gravity separation, wherein organic soil residues, inorganic matters and metals are separated in the magnetic separation process; performing a first treatment step on the organic soil residues; and performing a second treatment step on the combustible organic matters and light combustibles. The process is advanced, reasonable, high in degree of automation and high in treatment capacity, more recycled products with high quality are realized, treatment cost is low, aerobic fermentation treatment processes such as aging and curing and a relative odor concentration process are performed in a closed mode, the waste gas is treated in a centralized mode and is emitted on standard, the further environmental pollution in the household garbage treatment process is avoided, the household garbage is changed into valuable materials, and the recycled products with high market values are produced, so that household garbage harmlessness, reduction treatment and comprehensive resource utilization are realized.

The invention relates to an energy regeneration method for solid organic waste alkaline thermal hydrolysis supernate. Solid organic waste mainly comprises kitchen waste and sludge. The energy regeneration method for the solid organic waste alkaline thermal hydrolysis supernate comprises the following steps that (1) after the organic waste, water and alkali hydrolysis agents are proportioned and mixed in a proportioning and preheating tank, heating is conducted, so that the temperature of the materials in the tank is increased to 30-99 DEG C; (2) the materials in the proportioning and preheating tank are sent into a reaction kettle through a pump for the temperature rise reaction, and finally the temperature of the materials is controlled between 100 DEG C and 140 DEG C, and the reaction continues to be conducted for 90-120 minutes; (3) the materials after the hydrolysis reaction are conveyed into a flash evaporation tank for pressure relief and cooling, so that the temperature of the materials is decreased to 50-100 DEG C; (4) clarified liquid and solid are obtained after solid-liquid separation; and (5) the liquid obtained after solid-liquid separation is delivered into an anaerobic digestion system for anaerobic digestion treatment, and thus marsh gas is generated. By the adoption of the energy regeneration method for the solid organic waste alkaline thermal hydrolysis supernate, toxin removal, stabilization, minimization and energy regeneration of the organic waste can be achieved at a time.

The invention relates to a method for curing urban sludge by a chemical method. The method comprises the following steps: quicklime powder is added into the urban sludge to destroy a micelle structure of the urban sludge, reduce moisture content of the sludge and realize sterilization, deodorization and dehydration of the urban sludge; stable materialized sludge is obtained; the materialized sludge is subjected to a stacking, airing or drying process; the water content is reduced to 10 to 20 percent to realize further dehydration of the sludge; the dehydrated sludge is broken into granular or powdery sludge; the PH value of the sludge is regulated; and the sludge is compacted and buried. The method can effectively treat the urban sludge, realize harmless and reducing treatment of the sludge, solve the problem of environmental pollution of the urban sludge and meet requirement of sustainable development concept of the environmental protection industry.

The invention provides a method for remedying heavy metal contaminated soil through passivation. The method comprises the following steps: collecting heavy metal contaminated top soil, removing large impurity granules, performing air drying, uniformly mixing, grinding, and sieving by using a 2mm sieve; grinding dried red mud, sieving by using a 100-mesh sieve, adding deionized water for washing red mud powder, measuring the pH value of a mixed solution system by using a pH meter, and repeatedly washing till the pH value of desalinated red mud is 8, 10 or 11 to obtain the desalinated red mud; adding ferrous sulfate into the desalinated red mud obtained in the former step, adding deionized water to ensure that the water content is 40-70%, and maintaining for 7-10 days under the conditions that the temperature is 25 DEG C plus or minus 0.5 DEG C and the humidity is 95% to obtain improved red mud; adding the improved red mud obtained in the former step into the heavy metal contaminated soil according to an addition ratio that the weight of the improved red mud is 0.5-2% of the dry weight of the contaminated soil, sufficiently mixing uniformly under the condition that the water content in terms of the dry weight of the solid is 40-70%, maintaining for 25-35 days under the conditions that the temperature is 25 DEG C plus or minus 0.5 DEG C and the humidity is 95%, drying and grinding for standby application.

The invention relates to a vehicular integrated dewatering system, which comprises a bearing vehicle, dewatering equipment and auxiliary corollary equipment. The dewatering equipment and the auxiliary corollary equipment are mounted on the bearing vehicle and flexibly move along with the same. The dewatering equipment is used for material filter-pressing and dewatering operations on the bearing vehicle. The vehicular integrated dewatering system has the advantages that the integrated system is complete in function, wide in application and capable of flexibly moving to realize onsite dewatering quantity reduction treatment of scattered industrial and agriculture waste residue, waste residue transport cost is multiply reduced, the equipment can be used for waste residue treatment and collection of various waste residue discharge sources simultaneously, and vehicular integrated dewatering system can be used for dewatering waste residue in a fluid, semifluid and solid state without depending on external environment conditions and can be operated normally in various operational environments. Various scattered resources can be fully collected to create conditions for subsequent industrial, massive and recycling utilization, and social environmental protection can be promoted while resource utilization rate can be increased.

A method and a device for realizing partial shortcut nitrification and anaerobic ammonia oxidation of municipal sewage by sludge fermentation belong to the field of municipal sewage treatment and sewage biological treatment. In a first SBR of a reactor, organics and phosphorus are removed, partial shortcut nitrification and denitrification actions are taken, and phosphorus is removed through real-time DO and pH control and sludge discharge. Effluent of the first SBR of the reactor enters a second SBR of the reactor for anaerobic ammonia oxidation reaction, so that the purpose of deep nitrogen and phosphorus removal is achieved. As residual sludge and domestic wastewater are mixed for treatment, the problem that shortcut nitrification of domestic wastewater cannot be stably realized due to low ammonia concentration can be solved, carbon sources are saved, the nitrogen and phosphorus removal efficiency is improved, and meanwhile, the sludge reduction treatment is realized.

The invention relates to a method and a device for realizing sewage short-cut nitrification and denitrification in SBR by utilizing sludge fermentation substances and belongs to the field of municipal sewage treatment and biochemical sludge treatment. According to the method provided by the invention, through differences in inhibitory activity of the added sludge fermentation substances to nitrifying bacteria (ammonia bacteria AOB and nitrite oxidizing bacteria NOB) (stronger inhibiting degree to NOB), the purpose of elutriating the NOB is achieved. The method provided by the invention is suitable for various operation modes of the SBR and realizes higher nitrite accumulation rate and total nitrogen removal rate by taking the AOA-SBR operation mode as an example, thereby achieving the purpose of deep denitrification of municipal domestic sewage with low C / N ratio. The method and the device provided by the invention have the benefits that through the mixed treatment of the surplus sludge fermentation substances and the domestic sewage, the problem that the domestic sewage cannot stably realize the short-cut nitrification can be solved, the additional carbon source cost can also be reduced, the denitrification efficiency is improved, and meanwhile, the sludge reduction treatment is realized.

The invention discloses a treatment method for excess activated sludge in AOX pollution. The method comprises the steps that modified fly ash carrying ferro-manganese elements is added in the excess activated sludge and evenly mixed, then an oxidant is added for an oxidation reaction, a framework agent is added into a reaction solution after the reaction is completed, the pH value is regulated to range from 8 to 9, plate frame pressure filtration is carried out, and filter liquor and a sludge filter cake are obtained. According to the treatment method, before a fenton-like / persulfate advanced oxidation reaction, the modified fly ash carrying nanometer Fe3O4 and Mn2+ is adopted, so that the adsorption capability and the catalyzing capability of original fly ash are improved, and thus pollutants in the sludge and the sludge are efficiently degraded; organic pollutants in the excess activated sludge are effectively removed, and the water content of the sludge is reduced; harmless and reducing treatment of the sludge and the recycling comprehensive utilization of the fly ash are achieved.

The invention provides a method and a device for performing recovery and resource utilization on heavy metal in waste acid and solves the problems of high waste residue output, high operating expense, low recovery rate and the like. The device for performing recovery and resource utilization on the heavy metal in the waste acid comprises a buffer tank, a pre-filtering device connected with the buffer tank, a first-level membrane system connected with the pre-filtering device, a middle water tank connected with the first-level membrane system, a second-level membrane system connected with the middle water tank, a permeate liquid tank connected with the second-level membrane system, a concentrated liquid tank connected with the second-level membrane system and an electrolysis unit connected with the concentrated liquid tank. The method and the device have the benefits as follows: the reduction treatment of the waste acid is realized, the waste residue output is low, the heavy metal recovery rate is high, and the treatment expanse is low.

The invention discloses a zero emission system device for desulfurization wastewater evaporated by a drying tower after concentration. The zero emission system device comprises a pre-treatment unit, a membrane concentration unit and an air pre-heater bypass drying unit, wherein the pre-treatment unit is connected with the membrane concentration unit; the membrane concentration unit is connected with the air pre-heater bypass drying unit; the pre-treatment unit comprises an integrated high-efficiency sedimentation tank and a microfiltration device; the membrane concentration unit comprises a first-grade special middle-high pressure reverse osmosis membrane system and a second-grade seawater desalination reverse osmosis membrane concentration system; the air pre-heater bypass drying unit comprises a wastewater drying tower feeding box, a drying tower high-level water tank, a spray-drying tower, an air pre-heater and an SCR (Selective Catalytic Reduction) reactor. According to the device disclosed by the invention, a scheme of softening and concentration and evaporation of an air pre-heater bypass drying tower is adopted so that zero emission of the desulfurization wastewater is realized; produced fresh water is recycled and used as supplementing water of demineralized water of a boiler; evaporation is realized by adopting flue gas residual heat and an evaporation tower can be overhauled independently from a host system.

The invention discloses a method for extracting a carbon source from kitchen solid residues through an enzymic method, and belongs to the technical field of kitchen waste resource utilization. The method for extracting the carbon source from the kitchen solid residues through the enzymic method comprises the following steps of water is added into the kitchen solid residues; gelatinization is carried out; the pH is adjusted; diastasum diastace is added; hydrolysis is carried out; centrifugal separation is carried out; and a carbon source extracting solution is obtained or the solid residues arehydrolyzed. According to the method, the enzymic method is adopted for extracting and recycling starch and other carbohydrate in the kitchen solid residues, the starch and other matter in a solid phase are converted into saccharides capable of being dissolved in water, the extracting solution obtained by hydrolyzing the kitchen solid residues through the diastasum diastace is mainly composed of oligosaccharide, reducing sugar and other micromolecular sugar, and can serve as the carbon source for biological denitrification of a sewage treatment plant. In addition, the kitchen solid resides arecatalytically hydrolyzed by the diastasum diastace, the size of the kitchen solid residues is reduced, and while organic matter in the kitchen solid residues is separated and recycled, kitchen wasteis reduced.

The invention belongs to the technical field of waste treatment, and discloses a silicone slurry residue treatment system and a treatment technology thereof. The inlet of an azeotropic evaporation kettle device is connected with a mixing tank for mixing a silicone slurry residue source and an azeotropic solvent, a silane substance in the slurry residue is azeotropically evaporated together with the solvent, the obtained evaporated product enters an evaporated product rectification tower, a silicone high-boiling liquid phase monomer product is obtained from the bottom of the tower, and is sentinto a high-boiling cracking device to recover effective components, and an azeotropic solvent obtained from the top of the tower can be reused; and a residual liquid in the azeotropic evaporation kettle device, is filtered and dried, and then enters a waste powder deactivation device to extract and recover valuable components such as copper and silicon. The silicone slurry residue which is difficult to treat is evaporated and rectified to recover the valuable monomers and produce high-boiling methylchlorosilane, so the useful high-boiling methylchlorosilane in the slurry residue is recycled,the reduction treatment of the silicone slurry residue is achieved, the production cost is greatly reduced, and good economic benefits are obtained.

The invention discloses a wet garbage treatment device. The wet garbage treatment device comprises a wet garbage crushing device and a multi-station wet garbage treatment mechanism, wherein the wet garbage crushing device comprises a crushing device positioned below a water outlet of a water tank; the multi-station wet garbage treatment mechanism comprises a fixed disc, a rotating disc and a rotary driving mechanism; a receiving station, at least one extrusion station, at least one drying station and a blanking station are uniformly distributed on the fixed disc in an annular form; a receivingfilter screen is arranged in the receiving station; an extrusion filter screen is arranged in the extrusion station; a drying device is arranged in the drying station; a blanking through hole is formed in the blanking station; garbage treatment buckets are arranged corresponding to the receiving station, the extrusion station, the drying station and the blanking position one by one on the rotating disc; a blanking pipe is arranged above the receiving station; an extrusion device is arranged above the extrusion station; a water receiving and drainage cabin is formed below the receiving stationand the extrusion station; and a wet garbage can is arranged below the blanking station. The invention also discloses a household integrated multifunctional garbage sorting device.

The invention discloses an oil-containing sludge incineration system for a pressurized fluidized bed and an incineration treatment method. The process comprises the following steps: introducing preheated pressurized air into a fluidized bed incinerator, adding oil-containing sludge into the incinerator to pressurize and combust under a fluidized state, and supplementing auxiliary fuels to keep a combustion state stable if combustion heat is insufficient; enabling high-temperature pressurized wet flue gas generated in the incinerator to preheat pressurized air for combustion of the fluidized bed incinerator, preliminarily cooling the pressurized air into medium-temperature pressurized wet flue gas; continuously performing dust-removal denitration treatment on the flue gas to obtain medium-temperature pressurized clean wet flue gas, and recycling separated fly ash; recycling sensible heat of the medium-temperature pressurized clean wet flue gas through a waste heat recycling system, andrealizing up-to-standard emission through treatment such as a follow-up decompression system and a dehumidifying system. Reduction, harmless and resource utilization as well as energy conservation andemission reduction are realized on the oil-containing sludge, so that combustion efficiency can be greatly improved, equipment unit area processing ability is improved, and emission of harmful substances in flue gas is reduced.

The invention relates to a treatment and utilization method for oxytetracycline bacterial residues. The method comprises following steps: adjustment of water content of the oxytetracycline bacterial residues, regulation of pH, high-pressure wall breaking and cell lysis, separation of protein digesting liquor, separation and recovery of protein precipitate, anaerobic digestion treatment of remaining residue mixed liquor and concentration treatment of biogas residues. According to the method, the oxytetracycline bacterial residues are subjected to cell lysis and breaking pretreatment with an alkaline / high-pressure wall breaking technology, protein in the bacterial residues is extracted and recovered, efficient anaerobic digestion and biogas production capabilities of the bacterial residues are realized, and finally, the purposes of reduction and recycling of the bacterial residues are achieved.

The invention discloses a sludge treatment method. The sludge treatment method comprises the following step: carrying out oxidization treatment on sludge under an acidic condition by adopting persulfate, so as to finish the treatment of the sludge. By adopting the treatment method disclosed by the invention, the sludge is treated under the acidic condition by adopting the persulfate, so that the dehydration performance of the sludge can be improved, and the content of heavy metal in the sludge can also be reduced; the sludge treatment method has the advantages of simple and convenient process, convenient operation, little required equipment, low operation cost, convenience for large-scale industrial production and the like; reducing, stabilized, harmless and subsequent resourceful utilization of the sludge is realized, and the sludge treatment method has a very good application prospect.

The invention discloses waste catalyst mud water dehydration treatment equipment and a waste catalyst mud water dehydration treatment method, and belongs to the technical field of solid-liquid separation in environmental engineering. The equipment comprises a sludge conveyer device, a complexing agent feeding device, a flocculating agent feeding device and a coiled dehydration device. The technique method comprises the following steps: conveying waste catalyst mud water; adding a complexing agent and a flocculating agent; and carrying out mixing reaction, and coiled dehydration. The moisture content of the waste catalyst mud water can be reduced to about 50% from 99.5% once by only adding the compounded medicine and combining with a coiled dehydration manner. According to the technique and the equipment, deep dehydration is carried out on the waste catalyst mud water; the treatment cost of the sewage is reduced; and a good way is provided for reduction treatment of a waste catalyst. Compared with an existing dehydration technology of combining filtration with a vacuum belt dehydrator, the technology is not easy to block, small in floor area, simple to operate, high in automatic degree and low in operation cost, and does not generate secondary pollution.

The invention provides a method for preparing aluminum-silicon oxide from fly ash. The method comprises the following steps: sequentially carrying out alkali dissolution treatment, acid leaching treatment and roasting treatment on the fly ash. According to the preparation method for extracting the aluminum-silicon oxide from the coal ash, the coal ash is used as a raw material, and undergoes two-stage atmospheric pressure leaching, so the reaction pressure is reduced, the equipment investment is reduced, the preparation process is simple and easy to operate, and the preparation cost is low.

The invention discloses a treatment device and a treatment method for recycling protein and phosphorus from urban domestic sludge and converting reducing sugar, and belongs to the technical field of remaining sludge treatment equipment. By virtue of ultrasonic cavitation and a synergistic effect of chemical reagents, the effect of cracking the domestic sludge is efficiently achieved; a sludge cracking solution enters a vertical stainless steel barrel with a hydrotalcite filter, and by virtue of strong phosphorus adsorption of hydrotalcite, phosphorus in the cracking solution is acquired; thendephosphorized cracking solution enters the stainless steel barrel with the hydrotalcite filter, and by virtue of relatively strong affinity between the hydrotalcite and protein, the protein in the cracking solution is acquired; the phosphorus and the protein adsorbed in the filter are further desorbed by respectively added desorbing solutions to obtain a phosphorus concentrate and a protein concentrate; and under the action of cellulase and the sludge protein, the reducing sugar is prepared. Through the treatment device and the treatment method, effective cracking of the domestic sludge can be achieved so as to reduce the sludge, and efficient resource utilization of the domestic sludge can be achieved.

The invention provides a reuse and up-to-standard discharging process of recycled water for chemical fiber viscose waste water. The reuse and up-to-standard discharging process comprises three portions: (1) a pretreatment portion; (2) a reduction portion; and (3) a further treatment portion, wherein in the portion (1), the hardness and partial suspended pollutants are removed, in the portion (2),the reuse and reduction of the produced water are realized, and in the portion (3), the water quality of the produced water is better than the discharge standard. By adopting the reuse and up-to-standard discharging process of the invention, the corresponding treatment scheme is proposed for main problems of the waste water such as hardness, suspended solids, CODCr and the like, the water qualityof the recycled water can be ensured, the discharging amount of the chemical fiber viscose waste water is reduced, and a purpose of comprehensively utilizing the resource and reducing the sewage discharging can be actually realized.

The invention relates to cobalt-doped magnetic carbon and a preparation method and application thereof in hydrogen and methane production through anaerobic fermentation. According to the preparation method, a carbon material is utilized to load a magnetic compound containing iron and cobalt elements to prepare cobalt-doped magnetic carbon, and the magnetic carbon contains substances such as CoFe2O4, Fe2O3, FeFe2O4 and the like. when the cobalt-doped magnetic carbon is applied to the hydrogen and methane production process through anaerobic digestion, a large specific surface area and a developed pore structure of the cobalt-doped magnetic carbon can be utilized to enrich anaerobic microorganisms; meanwhile, the cobalt-doped magnetic carbon is rich in trace elements, so that the biologicalactivity and the growth metabolism of microorganisms are promoted, and the hydrogen and methane production process is completed in an anaerobic reactor. In addition, CoFe2O4 and FeFe2O4 are magnetic substances, after the anaerobic digestion process is finished, the CoFe2O4 and FeFeFe2O4 can be efficiently separated and recycled from sludge by utilizing a magnetic field, so that materials can be used repeatedly.

The invention relates to a method and device realizing heterotrophic coupling anaerobic ammonia oxidation advanced nitrogen removal in AOA-SBBR, and belongs to the field of urban sewage treatment andsludge biochemical treatment. The method includes the following steps: allowing urban sewage and sludge leavening mixture to simultaneously enter into an AOA-SBBR reactor; converting organic matter indomestic sewage and sludge leavening in an anaerobic zone into PHA and storing inside; converting ammonia nitrogen in an aerobic zone into nitrite nitrogen under the action of partial nitrification;carrying out anaerobic ammonia oxidation with residual ammonia nitrogen and nitrite nitrogen in an anoxic zone by utilizing anaerobic ammonium oxidation bacteria adhered onto a biological membrane, and carrying out denitrification at the same time to reduce residual nitrite nitrogen and nitrate nitrogen generated from anaerobic ammonia oxidation into nitrogen, so as to complete advanced nitrogen removal. According to the invention, the AOA-SBBR operation manner is adopted to realize mixed treatment of residual sludge leavening and domestic sewage to achieve advanced nitrogen removal and reduction treatment of sludge at the same time.

The invention discloses a dust removal device for cooling smelting furnace flue gas by using wastewater. The device comprises a wastewater sedimentation tank, a filter tank, a flue gas washing tank, awater mist smoke washing box and a water-gas separation box, the wastewater sedimentation tank is provided with a first overflow pipe, a wastewater inlet pipe, a first blow-off pipe and a water pumping pipe, and the water pumping pipe is connected to a water pump, a three-way valve, a spray header and a reflux pump; the filter tank is provided with a filter plate frame and a filter water pipe; the flue gas washing tank is provided with a conical plate, a muddy water pipe, a mud scraping mechanism, a second blow-off pipe, a second overflow pipe, a stirring paddle and a flue gas inlet pipe; thewater mist smoke washing box is provided with a high-pressure gas spray pipe, a third overflow pipe, a third blow-off pipe, a water supplementing pipe and an inclined pipe; and the water-gas separation box comprises a snake-shaped condensation pipe, a V-shaped water tank, a chimney outlet and an unpowered hood. According to the invention, wastewater is directly applied to water film dust removaltreatment after being preliminarily precipitated, dust removal methods such as spraying dust removal, water film dust removal and flushing type water bath dust removal are integrated, the consumptionof washing water is greatly reduced, treatment of the wastewater and waste gas is simplified, and the device has popularization value.

The patent relates to the fields of composite synthesis and clean energy production, and relates to a method for improving hydrogen production performance of dark fermentation by using manganese-dopedmagnetic carbon. The method includes: adding manganese-doped magnetic carbon into an anaerobic fermentation reactor to increasing hydrogen yield and hydrogen production speed. A fermentation substrate in the anaerobic fermentation reactor is composed of carbon source, nitrogen source, inoculums and the manganese-doped magnetic carbon. In the application, the manganese-doped magnetic carbon is applied to the fermentation hydrogen production process, so that defects, such as low quantity of microorganisms and poor enriching capability, insufficient microelements and low enzyme activity, existing in the fermentation can be overcome. By enriching anaerobic fermentation bacteria, generation of bio-film is promoted and required elements and site for growth and reproduction of the microorganismsare supplied, thus finally increasing the productivity of hydrogen.

The invention relates to the technical field of soil remediation, in particular to a vehicle-mounted skid-mounted soil leaching system, which comprises a milling tunneling device arranged at the frontend of a frame chassis. A crushing device communicated with the milling tunneling device is arranged in a container body; the crushing device is arranged corresponding to the middle stock bin, the middle stock bin is communicated with a negative-pressure air inducing device, the other side of the negative-pressure air inducing device is communicated with a multi-stage rotary leaching device, andthe multi-stage rotary leaching device separates mud and pumps the mud into the centrifugal spin-drying device; tail pulp screened by the multi-stage rotary leaching device enters a purification treatment device; an outlet of the purification treatment device is communicated with slurry of a horizontal cake pressing device, and the horizontal cake pressing device is communicated with a feeding hole of the low-temperature carbonization furnace; a discharge hole of the low-temperature carbonization furnace is communicated with a discharge pipe arranged at the tail part of the container body. Thesystem is reasonable and novel in design and high in automation degree, collection and harmless treatment of contaminated soil and in-situ backfilling of most contaminated soil are achieved, and theadaptability and treatment efficiency of the device are greatly improved.

The invention provides a livestock and poultry manure resource utilization method, and belongs to the technical field of waste treatment and disposal. The livestock and poultry manure resource utilization method provided by the invention comprises the following steps: (1) mixing livestock and poultry manure with sulfuric acid to obtain a mixed feed liquid; (2) carrying out hydrothermal carbonization treatment on the mixed feed liquid, and then carrying out solid-liquid separation on an obtained product system to obtain hydrothermal liquid and a solid carbonized product; (3) mixing the hydrothermal solution with lime water to obtain a liquid containing a bactericide component; mixing the solid carbonized product with a potassium hydroxide solution to obtain a mixed material with the pH value of 6.0-8.0, and drying the mixed material to be used as a soil conditioner; or mixing the mixed material with livestock and poultry manure and urea, and composting and fermenting to obtain the carbon-based organic fertilizer. The method provided by the invention can realize harmless and reduction treatment of the livestock and poultry manure in the whole process, and can realize full-factor resource utilization of the livestock and poultry manure.

The invention relates to the field of flue gas purification, and discloses a method and a device for removing SOx and NOx in catalytic cracking flue gas. The method comprises the following steps: a) catalytic cracking flue gas containing SOx and NOx is contacted with an adsorbent to remove SOx in the catalytic cracking flue gas; and b) the catalytic cracking flue gas from which SOx is removed, a reducing gas and a catalyst are contacted to carry out a selective reduction reaction to remove NOx. The device comprises a purification reactor, a regeneration reactor and a reducing gas storage tank,wherein the purification reactor is provided with a first reaction zone and a second reaction zone; the first reaction zone is provided with a riser reactor and a settling zone; the second reaction zone is provided with a catalyst bed; the purification reactor is provided with a reducing gas inlet; an outlet of the reducing gas storage tank is communicated with the reducing gas inlet of the purification reactor; and the reducing gas inlet is formed below the catalyst bed. According to the method and the device provided by the invention, secondary discharge of wastewater or waste residues is avoided, continuous operation can be realized, and the removal effect of SOx and NOx is good.

The present invention relates to a method and an apparatus for removing oil pollutants contained in catalyst micro-powder in MTO quenching wastewater, and provides a method for removing oil pollutants contained in catalyst micro-powder in MTO quenching wastewater. The method comprises: (1) storage regulation; (2) hydrothermal micro-cyclone desorption; and (3) wet hydrogen peroxide oxidation. The invention further provides the apparatus for removing oil pollutants contained in catalyst micro-powder in MTO quenching wastewater.

The invention provides a method for recycling and reducing blue algae by low-temperature heat and free ammonia combined treatment, and belongs to the fields of alga reduction recycling treatment and disposal. A low-temperature heat and free ammonia combined treatment technology is mainly adopted, and finally, anaerobic digestion is performed to produce methane; the rupture of blue algae extracellular polymers and cell walls and the release of intracellular organic matters are effectively promoted, the biodegradability of soluble organic matters is improved, the accumulation of algal toxins isreduced, richer and available organic substrates are provided for subsequent anaerobic digestion, the retention time is shortened while the methane yield of anaerobic digestion of blue algae is increased, and the organic matters in the algae are transferred from a solid phase to a liquid phase and finally converted into methane, so that the algae reduction is realized.