5results about How to "Improve coagulation performance" patented technology

The invention discloses a tea polyphenol modified polyferric flocculant as well as a preparation method and application thereof, and belongs to the field of anaerobic fermentation biogas slurry dehydration. Polyferric sulfate is used as a chain main body, tea polyphenol is used as a cross-linking agent, the tea polyphenol and iron ions in the polyferric sulfate form chelating coordination bonds under an alkaline condition, and the polyferric sulfate modified polyferric flocculant is prepared. Meanwhile, hydrophilic ether oxygen bonds in polyethylene oxide are combined with phenolic hydroxyl groups to form hydrogen bonds, so that a three-component polymer network is formed. Compared with the conventional flocculant, the modified polyferric flocculant prepared by the invention has the advantages that the electrical neutralization capability is enhanced, the adsorption bridging capability and the net repair sweeping capability of the flocculant are improved through coordinate bonds and hydrogen bonds, the floc forming rate is higher, the floc is larger and higher in strength, the sedimentation rate is higher, and the turbidity and the organic matter removal rate are high.

The invention belongs to the technical field of coagulants, and discloses a titanium gel coagulant, a composite titanium salt coagulant, a preparation method and application, the titanium gel coagulant is a TiCl4-ethanol-acetylacetone-water mixture, and the composite titanium salt coagulant is a composite preparation formed by compounding the titanium gel coagulant with a coagulant aid. The titanium gel coagulant and the composite titanium salt coagulant have the characteristics of low material price, simplicity in synthesis, good turbidity removal effect and the like, in addition, the titanium gel coagulant and the composite titanium salt coagulant not only enrich the research content of the coagulant, but also provide a new technical choice for the field of water treatment, and are stable in property and suitable for industrial production. The long-term storage and use can be realized.

The invention relates to a method for treating textile printing and dyeing wastewater by using a rare earth modified Ti-based xerogel coagulant, which comprises the following steps: (1) preparation of the rare earth modified Ti-based xerogel coagulant: adding rare earth metal salt into a mixed solution of ethanol and acetylacetone, and dropwise adding titanium tetrachloride after the rare earth metal salt is completely dissolved; and dropwise adding a mixed solution of ethanol and distilled water, uniformly stirring, and drying to obtain the product. And (2) adding the rare earth modified Ti-based xerogel coagulant into the textile printing and dyeing wastewater, stirring, and standing. The treatment method provided by the invention has the advantages of simple operation, slow effluent pH change, high coagulation efficiency and the like, and shows good coagulation performance on high-turbidity and high-organic-matter textile printing and dyeing wastewater. Experiments show that the combination of the titanium salt and the rare earth metal salt gives full play to the advantages of the two metal coagulants, so that the coagulation process is applicable to wider water quality conditions, and the synthesized composite coagulant has good stability and coagulation effect.

This invention provides a polymer, an ultra-high temperature oil well cement retarder, its preparation method and application, and a cement slurry. The molecular structure of the polymer is shown in formula (1): In formula (1), a, b, and c are all molar numbers, and the ratio of the three is 40-85:10-40:5-20; R1 is one of -H, -CH3, and -CH2COOH; R2 is selected from one of the following compounds: The ultra-high temperature oil well cement retarder provided by this invention can withstand temperatures up to 240℃. In the temperature range of 110-240℃, the cement slurry thickening time is linearly adjustable within 200-500 min and has a good linear relationship with temperature and dosage. It has good compatibility with other admixtures, has little impact on the mechanical properties of cement stone, and can ensure the safety of ultra-high temperature cementing operations and meet the cementing technical requirements of complex and difficult wells.

The invention relates to the technical field of sports goods production, in particular to a sports goods colloid heating production line which comprises a conveying belt, a plurality of rows of fixing assemblies used for clamping rackets are arranged above the conveying belt, and the fixing assemblies are used for conveying a plurality of sets of rackets to be arranged and moved; the heating box is fixedly installed in the middle of the conveying belt, the interior of the heating box is divided into a preheating cavity and a heating cavity, an extrusion assembly is arranged in the preheating cavity, and a heating assembly is arranged in the heating cavity; a conveying pipe used for guiding hot air in the heating assembly into the preheating cavity is arranged in the heating cavity. According to the table tennis bat baking and heating device, the heating box is arranged in the middle of the conveying belt, the preheating cavity and the heating cavity are formed in the heating box, the table tennis bat located on the conveying belt sequentially passes through the interior of the preheating cavity and the interior of the heating cavity along with the conveying belt, and the two sides of the assembled table tennis bat are baked and heated through hot air; and heating processing can be rapidly and efficiently completed.