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60results about How to "Reduce solid content" patented technology

Desulfurization wastewater treatment system and desulfurization wastewater treatment method

ActiveCN105000713AReduce solid contentSolid load and failure rate reductionMultistage water/sewage treatmentFertilizerGypsum
The present invention discloses a desulfurization wastewater treatment system and a desulfurization wastewater treatment method. The desulfurization wastewater treatment system comprises: a wastewater buffer pool, wherein the water inlet is connected with the outlet of an apparatus for producing desulfurization wastewater; a sludge pressing device, wherein the input end and the water outlet of the wastewater buffer pool are connected; a multi-stage treatment pool, wherein the water inlet is connected with the water outlet of the sludge pressing device; a clarification pool, wherein the water inlet is connected with the water outlet of the multi-stage treatment pool; and a pH value re-adjusting box, wherein the water inlet is connected with the clear water outlet on the upper portion of the clarification pool. The invention further provides a wastewater treatment method adopting the system. According to the present invention, the wastewater treatment method is particularly suitable for pellet flue gas wet desulphurization wastewater, the process is simple, the solid content in the system is low, the operating cost is reduced while the desulfurization by-product gypsum and the slow-release fertilizer can be recycled, and the final effluent meets the national discharge standard.
Owner:BEIJING ZHTD ENVIRONMENTAL PROTECTION TECH CO LTD

Sludge anaerobic digestion-high dryness dehydration method used for achieving adjustable high solid content based on double membrane system synchronous dehydration

The invention discloses a sludge anaerobic digestion-high dryness dehydration method used for achieving adjustable high solid content based on double membrane system synchronous dehydration. A device of the sludge anaerobic digestion-high dryness dehydration method comprises a sludge anaerobic digestion reaction unit, a forward osmosis solid content adjusting unit, a membrane distillation draw solution concentrating unit, and a post-digestion high dryness dehydration unit. According to the sludge anaerobic digestion-high dryness dehydration method, the forward osmosis solid content adjusting unit is used for realizing sludge dehydration when sludge anaerobic digestion is carried out, so that solid content can be adjusted in sludge anaerobic digestion process, sludge anaerobic digestion process is promoted, problems that sludge water content is high and solid content is low, and digestion reactors is large in size and low in digestion efficiency are solved effectively, sludge volume is reduced, and at the same time sludge anaerobic digestion efficiency is increased. At the same time, forward osmosis high dryness dehydration technology is adopted, so that super low energy consumption quantitative reduction of sludge is realized finally. All the forward osmosis draw solution is concentrated and recycled using the membrane distillation draw solution concentrating unit, and full utilization of the temperature of anaerobic digestion solution is realized in the process.
Owner:BEIJING FORESTRY UNIVERSITY

Method for improving efficiency of anaerobic digestion of wastewater sludge

The invention discloses a method for improving the efficiency of anaerobic digestion of wastewater sludge. The method comprises the following steps: (1) raw sludge generated by wastewater treatment and circulating sludge of an anaerobic digester are mixed, are heated by a heat exchanger, and enter a sludge anaerobic digester; the sludge is digested in the sludge anaerobic digester and constantly stirred in the digestive treatment process; (2) in the process of digestive treatment in the sludge anaerobic digester, the sludge enters an electrolytic cell from the lower part of the sludge anaerobic digester through an electrolytic metering pump to carry out closed electrolytic treatment, and the sludge entering the electrolytic cell every time is not larger than 10 percent of volume of the sludge anaerobic digester; (3) the electrolyzed sludge used as the circulating sludge of the anaerobic digester repeats the processes of the step (1) and the step (2) with the raw sludge, and the circulation is repeatedly carried out. The method has the advantages that compared with the digested sludge not to be electrolyzed, the solid content of the electrolyzed digested sludge is reduced by more than 30 percent, more than 30 percent of sludge quantity is reduced, and the degradation rate of organic matters anaerobically digested by sludge is increased by more than 40 percent.
Owner:黎荣

Method for resourceful treatment and use of water hyacinth

The invention belongs to the technical field of ecological protection and waste treatment and utilization and discloses a method for resourceful treatment and use of water hyacinth. The method comprises: pretreatment: stacking water hyacinth, draining the water hyacinth, breaking the water hyacinth, carrying out beating pulping through a pulping device to obtain water hyacinth slurry and crushingstraws to obtain straw powder, mixing conditioning: mixing the water hyacinth slurry and the straw powder, adding a strain and fermented biogas slurry into the mixture and carrying out conditioning toobtain a conditioned mixture, anaerobic fermentation: carrying out anaerobic fermentation on the conditioned mixture to obtain biogas and fermentation broth, biogas use: purifying and using the biogas, solid-liquid separation: carrying out solid-liquid separation on the fermentation broth to obtain biogas residues and biogas slurry for mixing conditioning, and composting treatment: mixing the biogas residues and the straw powder and carrying out composting treatment. The invention provides the high-efficiency method for resourceful treatment and use of water hyacinth. The method has a high resource utilization rate, produces rich varieties of products and has no secondary pollution.
Owner:中钢集团天澄环保科技股份有限公司

Horizontal screw discharge sedimentation centrifuge

The invention discloses a horizontal screw-discharge sedimentation centrifuge. The technical scheme is characterized in that the horizontal screw-discharge sedimentation centrifuge comprises a rotary drum and a screw pusher, wherein the screw pusher comprises a mandrel and a push sheet; the mandrel is provided with a charge hole; the rotary drum is provided with a liquid outlet port and a residue outlet port; the liquid outlet port is provided with an overflow plate; a screw conveying sheet used for discharging a suspension is arranged on the inner wall of the charge hole in a winding manner; the liquid outlet port comprises filter holes which are uniformly and closely distributed in the end part of the rotary drum; and a scraping blade increasing a contact area with the inner wall of the rotary drum is arranged on the push sheet. According to the horizontal screw-discharge sedimentation centrifuge disclosed by the invention, the suspension is uniformly pushed into the rotary drum through the screw conveying sheet, and therefore the weakening of a residue sedimentation effect due to the increasing of the treatment capacity of the centrifuge can be avoided; in addition, filtering for a clear liquid is improved through the liquid outlet port formed by the filter holes, and therefore, the probability of particle discharge is lowered; and then the contact area between the push sheet and the inner wall of the rotary drum is increased through the scraping blade, the push effect of solid-phase particles is improved, and in addition, the scraping blade also extrudes the solid-phase particles during a push process and is further beneficial to lowering the water content of a mud cake.
Owner:SUZHOU RUIWEI CENTRIFUGAL SEPARATION TECH

Food residue and kitchen waste co-processing system and co-processing method

The invention particularly relates to a food residue and kitchen waste co-processing system and co-processing method. The food residue and kitchen waste co-processing system comprises a food residue processing mechanism, a kitchen waste processing mechanism, a full-mixing anaerobic mechanism, an incineration mechanism and a grease storage mechanism, wherein the kitchen waste processing mechanism is suitable for carrying out pressure filtration and impurity removal and three-phase separation on slurry produced by the kitchen waste processing mechanism and the food residue processing mechanism so as to obtain solid residue, an organic solid phase, a water phase and an oil phase; the full-mixing anaerobic mechanism is suitable for anaerobic fermentation to obtain biogas, biogas slurry and biogas residue; the grease storage mechanism is suitable for storing grease; and manual sorting is replaced with an efficient and stable automatic sorting assembly, manpower is saved, safety and environmental protection are achieved, the number of food residue processing mechanisms is reduced under the treatment condition of the kitchen waste processing mechanism, the equipment utilization rate is increased, three-treatment of food residue is further deepened, the oil extraction procedure is added, and grease in the food residue is effectively extracted.
Owner:EVERBRIGHT ENVIRONMENTAL PROTECTION CHINA +2

Method for production of liquid fertilizer from biogas slurry

The invention provides a method for production of a liquid fertilizer from biogas slurry. The method includes: pretreatment: subjecting stock biogas slurry to rough grinding and emulsification; primary compounding: according to the variety of the to-be-prepared liquid fertilizer, adding the pretreated stock biogas slurry into a blending reaction kettle and performing stirring, adding an auxiliarymaterial of certain ratio to a constant volume, then conducting constant temperature stirring emulsification to obtain a semi-finished product liquid fertilizer; fine grinding: carrying out secondarygrinding, filter pressing and third grinding on the semi-finished product liquid fertilizer in order; secondary compounding: putting the semi-finished product liquid fertilizer subjected to fine grinding in a stirring reaction kettle, adding an assistant of certain ratio and adjusting the PH value to 5.5-8.5, and then stirring the substances evenly; and filter pressing, metering, and packaging. The method provided by the invention adopts a multiple grinding way for refining treatment of suspended matters in the biogas slurry, not only keeps the macromolecular organic nutrients in the biogas slurry, but also improves the organic matter content of the biogas slurry raw material, the organic matter content is up to 4%, and the fertilizer efficiency is greatly improved.
Owner:中节能绿碳(遵义)环保有限公司

Dry type anaerobic fermentation biogas slurry solid-liquid separation system and dry type anaerobic fermentation biogas slurry solid-liquid separation method for fruit and vegetable garbage

The invention relates to a dry type anaerobic fermentation biogas slurry solid-liquid separation system and a dry type anaerobic fermentation biogas slurry solid-liquid separation method for fruit and vegetable garbage. The system comprises a mechanical grid, a cyclone sand precipitator, a flocculation pool and a centrifugal dewatering machine, wherein the mechanical grid is connected to the pipeline of the cyclone sand precipitator, the sewage outlet of the cyclone sand precipitator is connected to the pipeline of the flocculation pool, and the water outlet of the flocculation pool is connected to the pipeline of the centrifugal dewatering machine. The method comprises that S1 biogas slurry passes through the mechanical grid to intercept the large-block impurities in the biogas slurry; S2, the obtained biogas slurry flows into the cyclone sand precipitator, and is subjected to sand removal; S3, the sand removed biogas slurry is mixed with an agent through a tubular mixer, and the uniformly mixed biogas slurry is flocculated in the flocculation pool to form large-block suspended matters; and S4, the flocculated biogas slurry is conveyed to the centrifugal dewatering machine, and is dewatered, and the dewatered biogas slurry is temporarily stored in a biogas slurry pool, and then is sucked out by a pump.
Owner:SHANGHAI INST FOR DESIGN & RES ON ENVIRONMENTAL ENG

Heath care wine, and preparation method thereof

The invention provides a heath care wine, and a preparation method thereof. According to the preparation method, glutinous rice, walnut kernel, and tartary buckwheat are taken as grain raw materials,glutinous rice hull, walnut shell, and tartary buckwheat hull are taken as hull raw materials, mutual cooperation of the raw materials is adopted, so that health care effect is improved, the bitter and astringent mouthfeel of the hull raw materials is eliminated, waste is changed into valuables, hull raw material utilization rate is increased, the obtained health care wine is rich in a plurality of amino acids and anti-oxidant active substances, is capable of relaxing muscles and tendons and promoting blood circulation, reliving fatigue, improving human immunity, and delaying skin aging. The preparation method is capable of realizing mutual cooperation of Daqu with after-run, so that wine quality is improved, and wine yield is increased; wine collection is carried out different temperatureand pressure conditions, the bitter and astringent substances capable of influencing mouthfeel in wine are removed, wine purity and fragrant smell are improved; in the cellaring process, the externalparts of terrines are covered with vinasse to improve wine quality further. The health care wine yield is high, the nutrients are abundant, the color is transparent, the solid substance content is low, and the mouthfeel is mellow and thick.
Owner:李延奎

Method for extracting essential oil from orange juicing peel and oil mixture

The invention discloses a method for extracting an essential oil from an orange juicing peel and oil mixture, particularly discloses a way/method for linking a cup juicer and an oil grinding machine, and more particularly discloses an optimal method for mounting and configuring equipment. The method comprises the steps: directly obtaining a peel, oil and water mixture when oranges are juiced by using the oil grinding machine or the cup juicer, and collecting and conveying the peel, oil and water mixture to a spiral refiner for peel and oil separation; then, entering an oil and water mixture into a series of equipment to separate the essential oil in water; and finally, entering the essential oil into an essential oil storage tank, settling the essential oil, and then, flowing the essential oil into a packaging container and the water with very low oil content to enter a sedimentation tank, and entering the water into a spray water pipe of the cup juicer and the oil grinding machine through pumping and pressurizing so as to be recycled. The material delivery of a whole system and the material balance in a delivery process are considered in the method, and the method is convenient to operate, simple in installation and relatively high in water circular utilization ratio. The solid matter content, essential oil content and COD (Chemical Oxygen Demand) in wastewater generated by the peel and oil mixture can be up to the lowest, and the recovery rate of the essential oil in an orange processing process is up to an optimal value.
Owner:SHANGHAI BEYOND MACHINERY

Bio-toilet system with subcritical hydrothermal liquefaction as core and fecaluria treatment method

The invention discloses a bio-toilet system with subcritical hydrothermal liquefaction as a core and a fecaluria treatment method and belongs to the technical field of chemical industry and environmental protection. The bio-toilet system comprises a material buffer tank, a subcritical hydrothermal liquefaction unit, a high temperature heat exchanger, a low temperature heat exchanger, a solid-liquid separator, an anaerobic water inlet buffer pool, a high temperature anaerobic unit, a biogas storage purification device, a biogas combustion boiler, a drying pelletization unit, a combined membraneprocess unit, a recycling water pool, a conduction oil boiler and an air cooling tower. According to the bio-toilet system with subcritical hydrothermal liquefaction as the core and the fecaluria treatment method, the subcritical hydrothermal liquefaction is used as the technical core, and meanwhile the high temperature heat exchanger, the low temperature heat exchanger, the solid-liquid separator, a high temperature anaerobic process, a biogas combustion system and the drying pelletization unit are combined, fecaluria substances are harmlessly stabilized into landscaping water, an organic fertilizer or an organic salt; bad smell is treated by high temperature combustion, the harmless disposal of gas, liquid and solid is implemented, excellent environmental benefits and economic benefitsare provided, and multi-level utilization and optimization of energies are implemented in combination with the conduction oil boiler.
Owner:陕西圣昊朗道科技有限公司
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