7results about How to "Good desalination effect" patented technology

The invention discloses an improvement method for promoting growth of plants in salinized soil in Hexi region. The improvement method is realized by two steps of preparation of a soil conditioner and planting of salt-tolerant plants. The soil alkali-hydrolyzable nitrogen content of other plants except T2 is 1.2-2.5 times of the soil alkali-hydrolyzable nitrogen content of T0, the soil available phosphorus content of other plants except T5 and T6 is reduced by 12.9%-62.8%, and the reduction amplitude of the soil available phosphorus of T1 and T9 is maximum. The content of rapidly available potassium in soil is reduced by 28.8%-77.6% by planting plants, and the reduction amplitude of rapidly available potassium in T4 soil is maximum. After plants are planted, the salt content of plough layer soil is reduced by 27.8%-33.6%, and the reduction effect of T5 is the maximum; by means of planting of the salt-tolerant plants, the salt content of the soil of the 30-60 cm soil layer is reduced by 17.0%-37.3%, and T2 is reduced most obviously. The method has the advantages that obvious desalting effects can be realized during planting of the plants, the desalting rates of the plough layer soil can reach 13.3%-20.3%, and T5, T2, T3 and T1 are 20.3%, 16.2%, 15.5% and 15.1% respectively.

The invention discloses a coal-based hollow carbon fiber membrane and a preparation method and application thereof, and belongs to the technical field of water treatment.The preparation method comprises the following steps that according to the injection speed ratio of a shell layer spinning solution to a core layer spinning solution being 18: (1-6), a hollow fiber precursor is collected on an aluminum foil through a coaxial electrostatic spinning method, and the hollow fiber precursor is obtained; and then sequentially carrying out air low-temperature pre-oxidation and high-temperature carbonization treatment under inert gas to obtain the coal-based hollow carbon fiber membrane. Wherein the shell spinning solution contains oxidized coal and polyacrylonitrile; the core layer spinning solution contains polystyrene. The coal-based hollow carbon fibers with different inner diameters are prepared by fixing the injection speed of the shell layer spinning solution and adjusting the injection speed of the core layer spinning solution; the carbon fiber membrane with the hollow structure has a larger specific surface area and can provide more active sites, so that the deionization capacity and the deionization efficiency are improved; the oxidized coal modified hollow carbon fiber can be used for preparing a binder-free electrode material, the use of non-active materials is reduced, a three-dimensional conductive network is constructed to improve the conductivity of the electrode, meanwhile, the structural integrity of the electrode under the action of mechanical stress is enhanced, and the cycle service life of the electrode is remarkably prolonged.

A long-lasting antifouling polyamide reverse osmosis membrane, its preparation method, and its applications are disclosed, belonging to the field of membrane separation technology. The membrane comprises a porous support layer and a polyamide selective layer on its surface. The polyamide selective layer is covalently grafted with monoamine-terminated hyperbranched polyglycerol. The monoamine-terminated hyperbranched polyglycerol is grafted into the polyamide network through the reaction of its terminal primary amine groups with acyl chloride monomers during interfacial polymerization. This enriches the multi-hydroxyl branched structure of the hyperbranched polyglycerol on the membrane surface, forming a stable hydrophilic antifouling structure. The aforementioned long-lasting antifouling polyamide reverse osmosis membrane, its preparation method, and its applications result in a membrane with long-lasting and stable antifouling performance, strong hydrophilicity, and a simple preparation process, making it easy to industrialize.

The invention relates to the field of capacitance desalination, and discloses a desalination material containing ruthenium and titanium as well as a preparation method and application thereof. The method comprises the following steps: S1, carrying out anodic oxidation treatment on a titanium sheet to obtain a titanium dioxide nanotube array; s2, performing electrochemical deposition on the titanium dioxide nanotube array by using a Ru-containing deposition solution to obtain a Ru-loaded titanium dioxide nanotube array; and S3, calcining the titanium dioxide nanotube array loaded with the Ru. The preparation method is simple and efficient, and the prepared electrode material has a large specific surface area, good conductivity and high ruthenium loading capacity, shows good desalting performance in the desalting process, still keeps good desalting capacity after multiple desalting-desorption processes, has stable chemical performance, and can be applied to the field of electrochemical devices. The method has important significance in the actual production process.

The invention relates to a preparation method of a chlorine-resistant nanofiltration membrane and the chlorine-resistant nanofiltration membrane prepared by the preparation method. The method comprises the following steps: preparing a base film; the base membrane is sequentially contacted with an aqueous phase solution containing amine monomers and an organic phase solution containing acyl chloride monomers, the amine monomers comprise piperazine substances and pyrimidine substances with more than two amino groups, and the acyl chloride monomers comprise acyl chloride monomers with more than three acyl chloride groups; placing the base membrane after contact in an environment with a temperature of 10-30 DEG C, and spraying an aqueous solution containing a dialdehyde cross-linking agent; treating in an environment at the temperature of 40-80 DEG C; and post-processing. The method is low in production cost, high in production efficiency and simple and easy to operate, existing equipment does not need to be modified, and the chlorine-resistant nanofiltration membrane prepared from the method is low in use cost, easy to maintain, excellent in desalination performance, permeability and chlorine resistance and excellent in performance stability under long-term operation.

The utility model relates to the field of vegetable processing, concretely relates to a desalination device for pickled vegetable production, including desalination pool, the lower extreme of desalination pool is provided with drainage valve, the outside of desalination pool is provided with elevating stand, and elevating stand rotationally connects with door type frame, and the horizontal setting of door type frame is rotationally provided with net cylinder, and the both ends of net cylinder are conical and are provided with feeding pipe and discharge pipe respectively, and door type frame is provided with the drive mechanism connected with net cylinder, and the inside lower extreme of desalination pool is provided with multiple high -pressure air -jet pipes with the opening upwards, and high -pressure air -jet pipe all is provided with check valve, and the outside of desalination pool is provided with the gas pipe connected with high -pressure air -jet pipe all, and gas pipe is connected with high -pressure gas supply mechanism. The utility model has the advantages of uniform desalination, and the good desalination effect.

The invention discloses a Prussian blue stepped cubic framework / polypyrrole composite electrode material and a preparation method and application thereof.The composite electrode material comprises a cubic Prussian blue framework, granular polypyrrole and dendritic polypyrrole, and the granular polypyrrole adheres to and grows on the surfaces of the Prussian blue cubic framework and the dendritic polypyrrole; the dendritic polypyrrole is connected between the cubic Prussian blue frameworks. In the invention, under the combined action of a cubic Prussian blue framework and polypyrrole, a multi-dimensional structure can be formed by means of adhesion growth, series connection and the like, so that the composite material shows very excellent oxidation-reduction activity and conductivity; the composite electrode has the advantages of large electrolyte contact area, multiple active sites, proper Na < + > diffusion path, good conductivity, good structural stability and the like, can remarkably promote the desalination performance of the electrode when being used for preparing the capacitive deionization electrode, can promote the wide application of the electrode in the field of seawater desalination, and is high in use value and good in application prospect.