9results about How to "Low additional cost" patented technology

The invention relates to the technical field of oil and gas fracturing flow-back fluid treatment, and particularly discloses a boron-doped diamond electrode electrooxidation system and method for treating fracturing flow-back fluid. According to the method for treating the fracturing flow-back fluid, before the fracturing flow-back fluid enters an electrooxidation unit, sulfide is efficiently removed, poison and competitive oxidation of the fracturing flow-back fluid to an electrode are eliminated, a BDD electrode is protected, a foaming agent is synchronously removed through aeration enrichment, the problem of foam interference in the flow-back fluid treatment process is fundamentally solved, and continuous and stable operation of a system is guaranteed; after the electro-oxidation unit, active chlorine (pypocholoride / chlorine) is effectively removed and recycled, so that waste is treated by waste, the oxidation efficiency is improved, and the dosage of chemicals is reduced. Through the collaborative design, the interference and foam problems of sulfide with high chloride ion content and strong reducibility are collaboratively optimized, and the treatment efficiency, economical efficiency and stability of the system are integrally improved.

The invention discloses a human body height detection method and a clothes airing machine control method and system.The human body height detection method is applied to a clothes airing machine provided with an image acquisition unit and comprises the steps that image information acquired by the image acquisition unit is acquired; extracting a face portrait from the image information, and performing depth map calculation; and calculating the body height according to the depth map calculation result. In the control process of the clothes airing machine, for a target person entering the airing induction area, the body height of the target person is detected through a lost body height detection method; finally, according to the body height of the target person, the descending stroke of the airing rod of the clothes airing machine is controlled. The clothes airing machine can detect the height of the target person entering the airing induction area of the clothes airing machine in real time, so that the clothes airing machine can adaptively control the descending height of the airing rod based on the height of a user, and the user can air clothes conveniently.

The present application provides a method for alleviating the inhibitory effect of fluoroquinolone antibiotics on anaerobic digestion, which belongs to the technical field of sewage treatment. The method comprises: adding uncompounded biochar to a system to be treated for anaerobic digestion of fluoroquinolone antibiotic sewage using an activated sludge method. By adding uncompounded biochar, the method can effectively alleviate the inhibitory effect of antibiotics on anaerobic digestion, effectively increase the methane production and the removal rate of antibiotics, and has low reagent cost, equipment and operation requirements.

The invention discloses homogeneous-phase low-toxicity zinc-bromine flow battery electrolyte, and belongs to the field of flow batteries. The electrolyte contains zinc salt, bromine salt, sulfamate and acetate. The zinc-bromine flow battery using the electrolyte can realize high coulombic efficiency and stable long circulation. The electrolyte always exists in a homogeneous form in the charging and discharging process, and oil phase dispersion caused by adding a bromine complexing agent into the traditional zinc-bromine flow is avoided, so that the complexity of a zinc-bromine flow battery system can be reduced. Besides, compared with a traditional zinc-bromine flow battery added with a bromine complexing agent, the zinc-bromine flow battery using the electrolyte has extremely low concentration of elemental bromine and polybromide ions, so that the toxicity can be greatly reduced, and the safety of the zinc-bromine flow battery is improved.

This invention provides a gradient magnetic biochar, its preparation method, and its applications, belonging to the field of solid waste resource utilization and anaerobic fermentation technology. Through a synergistic modification strategy of gradient alkaline thermal activation and atmosphere-controlled co-precipitation, this invention significantly improves the electron transport efficiency and catalytic activity against chain-elongating microorganisms, thereby efficiently promoting the directed synthesis of medium-chain carboxylic acids at low doses. This not only improves fermentation performance but also significantly reduces the cost of addition, providing an innovative solution for low-carbon and efficient treatment of livestock and poultry manure and a substantial increase in the yield of high-value-added medium-chain carboxylic acids. It has significant practical application value and broad industrialization prospects.

The present invention discloses a decentralized low-carbon sewage treatment device and method based on anaerobic ammonia oxidation, the device includes a sewage inlet tank for receiving external raw water, which can transport the raw water to a UASB reactor and a continuous flow reactor respectively in proportion; the UASB reactor is used to convert organic matter in the raw water into methane; a suspended anaerobic ammonia oxidation bacteria filler is added in the continuous flow reactor, and raw water denitrification is achieved through short-range nitrification / anaerobic ammonia oxidation and short-range denitrification / anaerobic ammonia oxidation, and the hydraulic retention time in the anoxic zone is extended to achieve synchronous in-situ fermentation of sludge, and a check gate is set to solve the problem of sludge back mixing; the secondary sedimentation tank precipitates the raw water after denitrification, and returns part of the sludge to the continuous flow reactor. The present invention does not need to add additional carbon sources, effectively solves the problem of back mixing in the reaction zone, realizes the resource utilization of decentralized sewage organic matter and sludge reduction generated in highway service areas, etc., and has the characteristics of high denitrification efficiency, stable performance and effective reduction of carbon emissions.

The invention belongs to the field of wastewater treatment, and particularly relates to a landfill leachate treatment method and system. According to the method, the water quality and the water quantity of the landfill leachate are homogenized through an adjusting tank, then the landfill leachate is sequentially subjected to AO biochemical treatment and MBR treatment, iron-carbon micro-electrolysis treatment, ultraviolet catalytic oxidation treatment, coagulating sedimentation treatment and biological aerated filter treatment to obtain clear water, and generated sludge is subjected to filter pressing to form a sludge cake for landfill. According to the method, an optimized advanced oxidation treatment process consisting of iron-carbon micro-electrolysis treatment, ultraviolet catalytic oxidation treatment and coagulating sedimentation treatment is effectively combined with biological aerated filter treatment, so that advanced treatment of the landfill leachate is realized, and the problems that in an existing landfill leachate treatment process, the dosage of an oxidizing agent is large, the utilization rate is low, and the treatment cost is high are effectively solved. And the occupied area of tail water biochemical treatment is large. The system is used for realizing landfill leachate treatment, is high in treatment efficiency and high in denitrification load, does not need to design a secondary sedimentation tank, and reduces the construction cost of the system.

The application provides a nanoparticle reinforced low-cost aluminum alloy melt-resistant die steel and a preparation method thereof. The preparation method comprises the following steps: mixing titanium aluminum powder, B4C powder and C powder to obtain a mixture 1, and coating the mixture 1 into a wire A by using pure aluminum strip; mixing the wire A with pure aluminum liquid after heating, and casting and rolling to obtain an intermediate alloy wire B coated with aluminum-coated TiC+TiB2 ceramic nanoparticles after mechanical stirring and ultrasonic treatment; batching, heating raw materials to complete melting to obtain a molten die steel liquid; adding the wire B into the molten steel liquid, and obtaining the nanoparticle reinforced low-cost aluminum alloy melt-resistant die steel after vacuum degassing, casting, electroslag remelting, high-temperature diffusion, forging, annealing, quenching and tempering. The nanoparticle reinforced low-cost aluminum alloy melt-resistant die steel prepared by the application can be immersed in molten aluminum alloy at 740-760 DEG C, and the erosion weight loss rate of the die steel obtained by the application is 32-48 mg / cm 2 , and the average thickness of the intermetallic compound layer is less than or equal to 159 µm.

The utility model provides an octagonal tube main shaft purline fixing structure for a photovoltaic support, which comprises an octagonal tube main shaft, an adapter which is positioned on the upper side of the octagonal tube main shaft and is used for mounting a purline, and a connecting assembly which is used for tightly holding and mounting the adapter on the octagonal tube main shaft, the plane section is parallel to the upper plane of the octagonal tube spindle, the transition section extends downwards from the two ends of the plane section and is used for preventing the plane section from being attached to the upper plane of the octagonal tube spindle so as to avoid over-constraint of the octagonal tube spindle, and the inclined plane section extends downwards from the transition section in an inclined mode and is completely attached to the inclined plane of the octagonal tube spindle. Only the inclined surfaces of the adapter seat and the U-shaped bolt and the inclined surfaces of the adapter seat and the lower hoop are attached to the inclined surface of the octagonal tube main shaft, so that the over-constraint phenomenon caused by mutual competition when the inclined surfaces and the planes are attached is effectively avoided.