10 results about "Waste minimisation" patented technology

This invention discloses a method for configuring oil and gas recovery facilities at coastal refined oil terminals adaptable to multiple operating conditions. It relates to the technical field of environmental pollution control, particularly air and water pollution control. Oil and gas pollution from terminals has a significant destructive impact on the environment. To protect the environment, terminals need to be equipped with oil and gas recovery facilities. This method first collects the basic operating parameters of the target terminal and the pipeline laying distance, and determines the spatial constraints. A multi-objective evaluation matrix is ​​constructed, and candidate scheme scores are calculated and ranked using a comprehensive evaluation model. Finally, the footprint of the optimal scheme is used, combined with the spatial constraints, to determine the physical boundaries. Based on the pipeline laying distance, selection parameters for the induced draft module used to overcome long-distance pressure drop are simultaneously output, generating spatial layout instructions that include physical arrangement and fluid compensation. This invention deeply couples process quantitative optimization with the physical space of the terminal, significantly reducing the overall operating energy consumption of the oil and gas recovery process and contributing to energy conservation and emission reduction in ports.

The invention discloses a Fe / Cu-SAPO-11 adsorption carrier capable of adsorbing NH3 and resisting poisoning as well as a preparation method and application of the Fe / Cu-SAPO-11 adsorption carrier, and belongs to the field of environmental pollution control materials and technologies. The preparation method at least comprises the following steps: in the presence of a source containing aluminum, phosphorus and silicon, performing hydrothermal synthesis, calcining to obtain an SAPO-11 molecular sieve, and finally loading copper by an ion exchange method. And carrying out hydrothermal synthesis on iron oxide, and physically mixing the molecular sieve and the iron oxide to obtain the Fe / Cu-SAPO-11. The Fe / Cu-SAPO-11 prepared in the invention has a micron-scale spherical structure, and iron oxide loaded on the Fe / Cu-SAPO-11 has a regular hexagonal structure with a nano-scale size. Compared with the prior art, the method disclosed by the invention is simple to operate, easy for large-scale production, high in NH3 adsorption efficiency and good in sulfur resistance.

The invention belongs to the technical field related to water treatment, and particularly discloses a method for electrocatalytic enrichment of uranium by using zero-valent iron aerogel, and the method comprises the following steps: slicing hydrophilic carbon paper, and treating for later use; the preparation method comprises the following steps: dissolving zero-valent iron aerogel and an adhesive in an organic solvent, and performing ultrasonic dispersion to form uniform catalyst slurry; uniformly coating the surface of pretreated carbon paper with the obtained slurry in an oxygen-free environment, drying to obtain a zero-valent iron aerogel-loaded carbon paper working electrode, forming a three-electrode system by matching the prepared working electrode with a counter electrode and a reference electrode, and performing electrochemical reduction reaction on uranium-containing water in an electrolytic tank by applying pulse voltage to obtain uranium-containing water. Uranium is enriched in the working electrode. The zero-valent iron aerogel loaded electrode with high specific surface area and excellent electron conduction performance is constructed, the low-pulse voltage electro-catalysis technology is combined, efficient, high-selectivity and low-energy-consumption enrichment of uranium in seawater is achieved, and the dual functions of resource recovery and environmental pollution control are achieved.

The invention provides a foam gel material as well as a preparation method and application thereof, and belongs to the technical field of environmental pollution control. The foam gel material provided by the invention is prepared from the following raw materials in percentage by mass: 0.2 to 0.4 percent of foaming agent, 0.4 to 0.6 percent of polymer foam stabilizer, 0.1 to 1.0 percent of sodium pyrosulfite, 0.01 to 0.02 percent of ferrous sulfate heptahydrate and the balance of water. Sodium pyrosulfite and ferrous sulfate heptahydrate are used as reducing agents and can reduce Cr (VI) into Cr (III), the generated Cr (III) and Fe < 3 + > (Fe < 2 + > oxidation products) are jointly subjected to cross-linking reaction with the polymer foam stabilizer, and a stable gel barrier structure is constructed in situ, so that the synergistic remediation effect of pollution blocking, structure curing and pollutant in-situ reduction is achieved; therefore, the repairing effect is improved.

The invention relates to the field of road engineering and environmental pollution control, in particular to a pavement-roadside synergistic purification method of a porous asphalt pavement surface layer, which remarkably improves the synergistic purification efficiency of suspended solids, heavy metals, nitrogen, phosphorus and organic pollutants through pavement layer modification, roadside structure optimization and plant synergy. The method is especially suitable for runoff treatment of urban traffic areas and commercial residence mixed areas, diatomite, quartz sand or straw biochar is used for replacing traditional mineral powder for pavement layer modification to prepare a porous asphalt pavement, and the adsorption capacity on heavy metal and total phosphorus is enhanced; in the roadside structure optimization, a double-layer filter material combination is arranged as a percolation layer, and nitrogen and phosphorus pollutants are selectively removed; the combination of the yellow acorus gramineus and the miscanthus sibiricus is planted on the roadside of the commercial and residential mixed area, and degradation of organic pollutants is enhanced; the multi-module combination overcomes the defects of single purification function and short system life in the prior art.

This invention discloses a dual-functional material based on steel slag, its preparation method, and its application, belonging to the field of solid waste resource utilization and environmental pollution control technology. The method uses steel slag, a solid waste from the iron and steel industry, as raw material, and prepares an iron-rich catalyst and a calcium-rich adsorbent through selective leaching. The iron-rich catalyst efficiently activates PMS in a photocatalytic persulfate (PMS) system to degrade tetracycline antibiotics in water; simultaneously, the calcium-rich adsorbent can capture CO2 generated during antibiotic degradation in situ, thus achieving multiple objectives of solid waste resource utilization and pollution and carbon reduction. This invention utilizes widely available and inexpensive raw materials and employs a simple process, effectively improving the high-value-added resource utilization level of steel slag and overcoming the carbon emission problems associated with traditional advanced oxidation technologies, providing a new approach for synergistic technologies of wastewater treatment and carbon reduction.

The present application belongs to the technical field of environmental pollution control, and particularly relates to a continuous and stable adding method and device for a poorly soluble hydrophobic organic substance in an aqueous phase system. The target substance is dissolved in a volatile organic solvent to form a stock solution, or an organic solution of the target substance is used as a starting material, quantitatively added to a film forming container, and evaporated to form a film. Then, an aqueous phase medium is added and dispersed by ultrasonic waves to obtain a uniform dispersed phase stock solution. During the adding process, continuous stirring is performed to keep the suspension, and a metering pump is used to pump the target aqueous phase system at a set flow rate or period, while mechanical stirring is performed for cyclic mixing to reduce the local concentration gradient. Under the premise of reducing the interference of a co-solvent and a surfactant, the present application realizes stable and reproducible adding of a poorly soluble hydrophobic organic substance, and is suitable for reactor exposure and environmental water body simulation.

The invention belongs to the technical field of environmental pollution control, and particularly relates to a preparation method of a flexible carbon / MoS2 heterojunction adsorption material and application of the flexible carbon / MoS2 heterojunction adsorption material as an adsorbent. The preparation method comprises the following steps: S1, cleaning waste cellulose fibers with deionized water and ethanol, drying, heating to 700-900 DEG C for carbonization in an inert atmosphere, and preserving heat for 1-3 hours to obtain a flexible carbon skeleton substrate with a complete structure; s2, carrying out oxidation treatment on the carbon skeleton substrate in an air atmosphere at 200-400 DEG C for 0.5-2 hours; s3, a molybdenum source and a sulfur source are dissolved in deionized water according to the molar ratio of Mo to S being 1: 2-1: 20; immersing the oxidized carbon skeleton substrate into the precursor solution, putting into a reaction kettle, and carrying out hydrothermal reaction at 140-200 DEG C for 6-18 hours; and washing the product, and carrying out vacuum drying. The flexible heterojunction material prepared by the method has macroscopic flexibility, super-hydrophilicity and abundant high-activity sites, and can be directly used as a self-supporting adsorption film; the defects that a traditional powder adsorbent is difficult to separate and easy to lose are overcome.

The invention provides a functional foam material as well as a preparation method and application thereof, and belongs to the technical field of environmental pollution control. The functional foam material provided by the invention comprises the following components: an anionic surfactant, a foam stabilizer, an oxidizing agent, an auxiliary agent and water, when the oxidizing agent is a solid oxidizing agent, the functional foam material is in a liquid phase; when the oxidizing agent is a gaseous oxidizing agent, the functional foam material comprises a liquid phase and a gas phase; the concentration of the anionic surfactant in the liquid phase is 0.2-0.4 wt%; the concentration of the foam stabilizer in the liquid phase is 0.4-0.6 wt%; the concentration of the solid oxidant in the liquid phase is 0.5-5 wt%; the concentration of the auxiliary agent in the liquid phase is 1-5wt%; the ratio of the volume of the gaseous oxidant to the total volume of the liquid phase is (3-4): 1.

The application discloses a controllable synthesis method of coal-based carbon materials and application in organic wastewater treatment, and belongs to the technical field of water treatment. The cold extraction liquid added with metal active components is used to rapidly cool the calcined coal fine particles, and in the process, the metal active components are dispersed in large amounts and enter the surface of the coal fine particles, so that the effect of treating organic pollution is effectively improved. The problems of insufficient adsorption and catalytic degradation capacity of the existing coal-based carbon materials in organic wastewater treatment are effectively solved. After the material is saturated, activated persulfate is used to remove the adsorbed organic pollutants on the coal-based carbon materials, and the regeneration of the coal-based carbon materials is realized. The prepared carbon materials retain the phase at high temperature, have strong structural stability, and have uniform active component distribution, so that the problems of difficult treatment of large-volume wastewater and difficult regeneration of the saturated adsorption material of the carbon materials are overcome, and the carbon materials can be used for environmental pollution control.