7results about How to "Reduce salinity" patented technology

The application relates to the field of improving severely salinized soil, and discloses a soil improver and a preparation method and application thereof. The method comprises the following steps: mixing agricultural and forestry wastes and bacillus spores, and sequentially carrying out anaerobic composting and aerobic composting, wherein the agricultural and forestry wastes are a mixture of at least one of corncob, mushroom residue, peanut shell and crop straw and sweet sorghum residue. The composition provided by the application not only has the functions of water and fertilizer conservation, soil fertility improvement, soil structure improvement and biological diversity improvement, but also can promote plant growth, reduce the total salt content, pH value, alkalinity, conductivity and sodium ion exchange capacity of the soil.

The invention relates to the technical field of saline-alkali soil improvement, and discloses a layered deep application biochar saline-alkali soil improvement device which comprises a rack and two supporting wheels arranged at the end of the rack through a supporting frame, a fertilizer box is fixedly installed on the top face of the rack through two installation plates, and a connecting frame is fixedly installed at the position, between the two supporting wheels, of the rack; a plurality of groups of soil leveling structures distributed in a linear array are arranged at one end, far away from the supporting wheel, of the rack, and a fertilizing assembly is arranged at the position, under the fertilizer box, of the rack. The depth of the soil turning assembly can be dynamically adjusted or fixed, a charcoal quantitative application function is matched, fertilizer can be accurately distributed according to the soil salinization vertical distribution characteristic, the V-shaped soil leveling plate ensures that charcoal is completely covered by soil, loss and volatilization are avoided, the charcoal is embedded into the soil in a layered mode, the improved physical and chemical properties are fully exerted, and the soil salinization effect is improved. The soil structure is improved in a targeted manner, the salinity and alkalinity are reduced, and the improvement scientificity is improved.

This invention provides a *Roseolariomoraxella salina* strain for saline-alkali soil improvement, with accession number CGMCC No. 36067. The *Roseolariomoraxella salina* strain provided by this invention exhibits significant comprehensive application advantages. This strain demonstrates excellent survival and growth capabilities under saline-alkali stress, effectively reducing salinity and alkalinity in saline-alkali soils and thus improving the saline-alkali environment. Whole-genome analysis shows that this strain carries multiple functional genes related to osmotic regulation and ion transport, providing a molecular basis for its salinity-reducing ability. Adding citric acid or betaine can further enhance its salinity-reducing performance, and its biomass is significantly increased after optimization of fermentation conditions. This strain shows promising application prospects in saline-alkali soil improvement and saline-alkali aquaculture environment management.

The utility model discloses a kind of high-concentration hemicellulose wastewater treatment systems, it is related to high-concentration hemicellulose wastewater treatment technical field, including the adjusting pool, fenton reaction pool, fenton sedimentation tank, multistage hydrolysis acidification pool and lifting pool connected in order, the adjusting pool water inlet is connected with high-concentration hemicellulose wastewater pipeline, non-ferrous wastewater pipeline and acidic wastewater pipeline, adjusting pool and fenton reaction pool between being provided with dispensing room, and ferrous sulfate storage tank, hydrogen peroxide storage tank and PAM storage tank are provided in dispensing room, ferrous sulfate storage tank and hydrogen peroxide storage tank are connected with fenton reaction pool water inlet respectively, and PAM storage tank is connected with fenton reaction pool, fenton reaction pool is also connected with alkali tank, the fenton sedimentation tank bottom is provided with sludge pump, and the lifting pool water outlet is connected with polymeric ferric sulfate storage tank. Through pre-fenton system combination multistage anaerobic treatment unit realizes the efficient decomposition of hemicellulose, lignin and other refractory substances, and cooperates subsequent advanced treatment to ensure that effluent COD is stable and up to standard.

The invention discloses a graded regeneration method and application of saturated denitrification resin, and belongs to the field of environmental protection and water treatment. The graded regeneration method of the saturated denitrification resin comprises the following steps: S1, flushing the saturated denitrification resin with 0.3 wt%-2wt% of a first regenerant, performing primary regeneration, and collecting to obtain primary regeneration liquid; s2, flushing the denitrification resin subjected to primary regeneration by using 3.5 wt%-6wt% of a second regenerant, performing secondary regeneration, and collecting to obtain a secondary regeneration solution; and S3, flushing the denitrification resin subjected to secondary regeneration by using a flushing agent to obtain the denitrification resin subjected to regeneration. According to the invention, the regenerant with different concentrations is used for graded regeneration to respectively obtain the first-stage regenerated liquid mainly containing high-concentration sulfate and the second-stage regenerated liquid mainly containing high-concentration nitrate and almost containing no sulfate, so that the effects of separating and enriching the sulfate and the nitrate are realized; the recovery of sulfate and the anaerobic denitrification treatment of nitrate are facilitated. The method is simple in process, reasonable in design and easy to industrially popularize.

This utility model discloses a nanofiltration membrane module for acid and alkali resistant high-salt wastewater, relating to the field of wastewater treatment technology. It includes a filtration chamber, inside which a nanofiltration membrane body is fixedly installed. The input end of the filtration chamber is fixedly connected to a wastewater pretreatment chamber, which includes a chamber body, a stirring assembly, a neutralization assembly, a water quality monitor, a wastewater output pipe, and a control terminal. In this utility model, the water quality monitor monitors the acidity, alkalinity, and salinity of the wastewater. The monitoring data is transmitted to the control terminal, which outputs corresponding control commands to open the corresponding secondary electrically controlled valve. The neutralization solution inside the solution storage tank enters the chamber body through the secondary electrically controlled valve and the solution output pipe, neutralizing the wastewater or settling salt ions in the wastewater, thereby reducing the acidity, alkalinity, or salinity of the wastewater and preventing corrosion of the nanofiltration membrane body.

The application discloses a growth promoter for improving the seedling emergence rate of cotton in saline-alkali soil, and the salt resistance of cotton seed germination is improved by using rapeseed euricin regulator and GABA permeation regulator; the stable agent formed by strong acid materials such as urea phosphate can quickly reduce the pH value and saline-alkali of the soil tillage layer; meanwhile, the urea phosphate, amino acid, fulvic acid and auxiliary materials provide certain nutrient substances for seedling crops; the cooperation among raw materials fundamentally improves the salt tolerance of cotton seedling, not only improves the seedling emergence rate of cotton, but also can quickly reduce the pH value of saline-alkali soil in Xinjiang after dissolving water, improves the chemical composition of soil, reduces the salt content and alkalinity of soil, creates a good environment for crop growth, and after application, the soil salt content is below 20 g / kg, the pH value is below 7.5, the seedling emergence rate of cotton is above 70%, which is more than 30% higher than that of the control, and the yield of cotton in saline-alkali soil in Xinjiang is significantly increased, thereby providing technical support for rural revitalization.