21results about How to "Low additional cost" patented technology

The invention belongs to the technical field of wastewater treatment, and provides a method for realizing continuous degradation of pollutants under a low dosage based on a self-assembly induced carbon confinement material, which comprises the following steps: adding peracetic acid and a carbon confinement material into wastewater containing organic pollutants, treating the wastewater under a stirring condition, and in the wastewater treatment process, adding the peracetic acid and the carbon confinement material into the wastewater, the carbon confinement material activates peracetic acid to generate hydroxyl free radicals, organic free radicals, singlet oxygen and Co (IV) to degrade organic pollutants in the wastewater; the carbon confinement material is composed of a cobalt material and a nitrogen-doped carbon material coating the cobalt material, the cobalt material is composed of Co and CoO, and the carbon confinement material is nanoparticles with a core-shell structure. According to the invention, the high-efficiency utilization of the oxidizing agent peracetic acid can be realized under the condition of low-carbon confinement material dosage, the continuous degradation of micropollutants can be mediated, and the treatment cost of wastewater containing organic pollutants can be reduced.

The utility model discloses a denitrification treatment system for wastewater containing high ammonia nitrogen and refractory organics, and belongs to the technical field of wastewater treatment. The system comprises a coarse / fine grid, an adjusting tank, an anaerobic reaction tank, an anaerobic sedimentation tank, a Fenton reaction tank, an iron ammoxidation adjusting tank, an iron ammoxidation reaction tank, an iron ammoxidation sedimentation tank, a liquid alkali sedimentation tank, a sulfur autotrophic adjusting tank and a sulfur autotrophic tank which are sequentially communicated along the wastewater treatment direction, at least part of sludge in the anaerobic sedimentation tank flows back to the anaerobic reaction tank, at least part of sludge in the iron ammonia oxidation sedimentation tank flows back to the iron ammonia oxidation reaction tank, and at least part of sludge in the liquid caustic soda sedimentation tank flows back to the Fenton reaction tank; and residual sludge in the anaerobic sedimentation tank, the iron ammonia oxidation sedimentation tank, the liquid caustic soda sedimentation tank and the sulfur autotrophic tank sequentially enters a sludge concentration tank and sludge dewatering equipment. On the premise of meeting the production and environmental protection requirements, the operation and sludge treatment cost is reduced, and the operation stability of the treatment system is improved.

The invention discloses a production method of an economical easy-to-form rare earth Ti microalloyed 700MPa-grade girder steel belt. The production method comprises the following steps: a steelmaking process; in the controlled rolling air cooling process, the heating temperature of the plate blank is controlled to be 1240-1270 DEG C, and the soaking time is controlled to be 20-30 min; 3 + 3 six-pass rolling is adopted for rough rolling of the plate blank, and the rolling reduction of the first pass is increased and controlled to be 35-40 mm; the temperature of an intermediate billet is controlled to be smaller than or equal to 980 DEG C, the thickness of the intermediate billet is controlled to be 55-60 mm, and the finish rolling temperature is controlled to be 830-860 DEG C; the cooling speed is controlled to be 15-30 DEG C / s, and the coiling temperature mainly considers the optimal TiC precipitation temperature and is controlled to be 590-620 DEG C; the performance of the steel strip meets the conditions that the yield strength is larger than or equal to 600 MPa, the tensile strength ranges from 700 MPa to 880 MPa, the ductility is larger than or equal to 14%, and the steel strip has good cold formability and meets the use requirements of customers.

The invention provides a variable-friction-coefficient sliding limiting seismic isolation support and an operation method thereof. The variable-friction-coefficient sliding limiting seismic isolation support comprises an upper cover plate and a lower connecting plate, and an upper connecting hole is formed in the top of the upper cover plate and used for being connected with an upper structure of the upper cover plate; the lower connecting plate is provided with a bolt hole used for being connected with a lower structure of the lower connecting plate. Variable friction coefficient layers are arranged on the opposite sides of the upper cover plate and the lower connecting plate and comprise two areas with obvious friction coefficient difference, namely a low friction coefficient material area 1 and a low friction coefficient material area 2 surrounding the periphery of the low friction coefficient material area 1; the friction coefficient of the first low-friction-coefficient material area is smaller than that of the second low-friction-coefficient material area. The sliding block is located between the upper cover plate and the lower connecting plate, and the upper surface and the lower surface of the sliding block are each provided with a low-friction-coefficient material layer; and a limiting layer. The support is simple in structure, low in manufacturing cost, convenient to construct and install and wide in application prospect.

The invention provides application of pine stilbene to inhibition of ruminant rumen methane production and ruminant feed containing pine stilbene. It is found for the first time that pinostilbene can be combined with the active site of methyl coenzyme M reductase, and on the premise that the total gas production rate and rumen fermentation parameters are not affected, rumen methane brevibacterium and key enzymes in a methanogenesis pathway are specifically inhibited, so that generation of rumen methane is inhibited, and the rumen hydrogen concentration cannot be increased.

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 relates to the technical field of VOCs waste gas treatment, in particular to a water-resistant catalyst as well as preparation and application thereof. The invention provides a preparation method of a water-resistant catalyst. The preparation method comprises the following steps: mixing manganese salt and a template agent A in water, and performing hydrothermal treatment to obtain a precursor A; mixing the precursor A, cobalt salt and a template agent B in water, and performing hydrothermal treatment to obtain a precursor B; calcining the precursor B to obtain the water-resistant catalyst. According to the cobaltosic oxide composite material which is prepared by firstly preparing a manganese precursor, loading a cobalt precursor on the manganese precursor and finally calcining and takes sea-urchin-shaped manganese dioxide as a substrate and is loaded on the substrate, which is provided by the invention, the cobaltosic oxide composite material is proved to be capable of carrying out catalytic oxidation treatment on Cl-VOCs under a low ozone amount in a water-containing environment.

The utility model discloses a waste liquid treatment system. According to the device, a polymerization inhibitor 701 is added into waste PGMEA diluent raw materials according to a certain proportion to be fully mixed, and PGMEA products are recycled under the conditions of pressure reduction and specific temperature, so that the problem that a heating tube bundle and a heating kettle or a reboiler wall are adhered due to polymerization of photoresist caused by continuous heating and concentration at present is solved. Compared with the existing cleaning mode of deslagging the heating tube bundle after heating, such as beating, high-pressure equipment cleaning, incineration and the like, the heating process is completed, the heating tube bundle does not need to be detached, the production halt time, the labor intensity of workers and the energy consumption caused by the blockage of the heating tube bundle are greatly reduced, and the production efficiency is improved. And the continuous production time is prolonged. Compared with other polymerization inhibitors, the polymerization inhibitor 701 is good in polymerization inhibition effect, small in addition amount, low in environmental pollution and low in market price. The device can solve the problem of blockage of the waste diluent heating tube bundle, and has the characteristics of greenness, high efficiency and low cost.

The present invention is a correction method for a transformer core noise calculation system, which is mainly for improving the accuracy of the transformer core noise calculation system and establishing a noise database at the same time, including parameter identification, environment identification, system correction, database establishment and other processes. A high-precision transformer core noise calculation system is formed to achieve the establishment and accumulation of a transformer core noise database, providing an effective database for transformer core noise research; the transformer core noise calculation system can predict and evaluate the transformer noise level from the design end, guide the selection of design parameters, and avoid the additional cost caused by noise correction at the back end of the design. The advantages of the present invention: through a logical method of cyclic correction, a transformer core noise calculation system is constructed, noise performance risks are reduced, front-end design is guided, and an effective database is formed, providing a reliable front-end system for transformer core noise identification, research and control.

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 provides an air source heat pump hot water heat storage defrosting system based on a shell and tube heat exchanger, comprising a heating water circulation module, a heat storage module, a refrigerant circulation module, and a heat exchange module; the refrigerant circulation module is connected to the heat exchange module, the heating water circulation module is connected to the heat exchange module, and the refrigerant circulation module and the heating water circulation module transfer heat through the heat exchange module; the heat exchange module is arranged in the heat storage module, and the heat storage module is used to store heat through the heat exchange module; the heat storage medium in the heat storage module includes water. The beneficial effects of the present invention are as follows: the present invention is designed with a plurality of heating and heat storage operation modes, and the switching between different heating and heat storage modes is simple, and the reasonable distribution of the heating amount of the unit under different operating environments can be realized, thereby ensuring that the heating effect and defrosting effect of the unit can satisfy the user, and greatly improving the indoor comfort during heating.

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 present invention relates to the field of building construction, and is a temporary boundary wall and a method of using the same for protecting the safety of existing building structures. The boundary wall is arranged at the boundary between the undemolished area and the construction area, one side of the bottom of the boundary wall is connected to the structural foundation of the undemolished area, an outward expansion raft plate cast as one with the boundary wall is arranged on the other side of the bottom of the boundary wall, and an inner expansion raft plate cast as one with the boundary wall is arranged on the inner side of the top of the boundary wall near the undemolished area; a plurality of stub steel bars extend outward from the outward expansion raft plate, a brick membrane is abutted on the other end of the stub steel bars on the outward expansion raft plate, and sand and gravel aggregates and plain concrete cover plates are arranged from bottom to top between the outward expansion raft plate and the brick membrane, and the plain concrete cover plates are flush with the top surfaces of the outward expansion raft plate and the brick membrane. The safety of the existing building structures in the undemolished area of ​​the first phase is protected, the earthwork in the construction area of ​​the second phase is backfilled smoothly, the requirements for the later restoration and continuation of the underground part of the first phase are met, and the feasibility of the later restoration and continuation of the construction is provided.

The utility model relates to the related technical field of wastewater treatment technology, in particular to a nickel removal device which comprises a reaction kettle, a connecting pipe, a medicine box, an oxygen tank, an electromagnetic gas valve, a pressure gauge, a filter pump, a filter box, a waterproof cylinder, a filter screen and a drain pipe, and the reaction kettle is mounted on the upper surface of an operation panel. The nickel removal device and discloses a nickel-containing wastewater treatment system which comprises a precipitation assembly, a sewage outlet of the precipitation assembly is communicated with a sewage inlet of a biological treatment assembly, and a sewage outlet of the biological treatment assembly is communicated with a sewage inlet of a nickel removal assembly. The device disclosed by the utility model has the advantages of multiple treatment and low cost, the two-stage nickel removal system is adopted, the impact of water quantity can be borne, the effluent stability of the system is improved, the pH value of wastewater is adjusted by adding sodium hydroxide, the operation cost is saved, and the effluent quality is improved; the problem that an existing nickel-containing wastewater treatment system does not have multiple treatment and low-cost treatment functions is solved.

A method for configuring a denitrification process unit for an industrial agglomeration wastewater treatment plant upgrading and reconstruction project includes the following steps: ① Calculation of the denitrification rate required for the upgrading and reconstruction project: the calculation formula is (designed inlet TN concentration-outlet TN control concentration) / designed inlet TN concentration*100%; ② Combined with the current biological treatment system process design (designed hydraulic retention time and suspended filler addition) and aerobic pool capacity utilization analysis, the feasibility of using part of the existing biological pool capacity to transform the anoxic zone is evaluated; ③ According to the formula, soluble non-ammonifiable organic nitrogen = soluble TN-NH4 + ‑N‑NO3 ‑ ‑N‑NO2 ‑ ‑N, that is, the concentration of soluble non-ammonifiable organic nitrogen in the secondary effluent can be calculated and analyzed. The present invention can reduce the risk of excessive TN in effluent, reduce the ineffective loss of carbon sources, and reduce project investment.

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.