35results about How to "Realize reasonable reuse" patented technology

The invention provides a layered double hydroxide (LDH) modified super-hydrophobic cloth for oil-water separation and a preparation process thereof. LDH is generated on the surface of commercial cloth by a hydrothermal method in an in-situ manner so as to improve the roughness of the cloth; then a substance with low surface energy is modified to obtain the super-hydrophobic cloth. The super-hydrophobic cloth prepared by the process comprises a cloth fiber layer and a super-hydrophobic LDH sheet layer, wherein the super-hydrophobic LDH sheet layer is formed by an LDH nanosheet which is irregularly and vertically attached on the cloth fiber layer, the chemical structural formula of the LDH nanosheet is [Mg<2+>(1-x)Al<3+>x(OH)2]<x+>[NO3<->]x.mH2O, wherein x represents one numerical value between 0 and 1, and the thickness of the LDH sheet layer is 300-1000nm. The prepared cloth has a contact angle more than 150 degrees, has good oil-water separation capability, can achieve high separation efficiency (up to 97%) to oil water mixture with different ingredients and different volume ratios, and has low relative standard deviation less than 0.7%. The LDH modified super-hydrophobic cloth has important significance on separation of oil water mixture, treatment on pollution of rivers, lakes and the sea caused by petroleum and non-insoluble oil stain.

The invention relates to a biofilter purification method for benzoic acid. The method comprises the following steps: (1) residual phase waste water after toluene extraction of benzoic acid production waste water is blended with domestic sewage, and a mixed solution is formed; (2) the mixed solution after blending is sent into a novel multifunctional purifying groove, primary anaerobic acidizing hydrolysis treatment is carried out for the mixed solution firstly, then a secondary aerobic treatment is carried out, finally deposition and disinfection treatment is carried out, and the solution is discharged from the novel multifunctional purifying groove. The benzoic acid waste water which is treated after twice extraction by toluene is mixed with the domestic sewage for adjusting, and biochemical treatment is continuously carried out in the biofilter; water qualities of discharged water in different treatment conditions with different volume ratios between the benzoic acid waste water and the domestic sewage are investigated, the water qualities can meet the national town sewage discharge primary standard, the treatment effect of NH4+-N reaches the secondary standard, so that good degradation and removal effects of low concentration benzoic acid waste water through the primary anaerobic and secondary aerobic biofilter are verified.

The invention discloses a method for preparing a function additive by using coconut residues serving as byproducts, and relates to the technical field of drink processing byproducts. The method mainly comprises the following steps: (1) carrying out freeze drying on the coconut residues, and preparing powder; (2) carbonizing the coconut residues at high temperature; (3) modifying the coconut residues. The function additive is prepared through the method; reasonable reuse of the coconut residues which are coconut juice processing byproducts is realized; the economical value of the coconut residues is increased; the prepared function additive can be used as a wear resisting agent added into a plastic product preparation raw material, so as to improve the wear resistance of a prepared plastic product to prolong the service life of the plastic product based on the wear resistance.

The invention belongs to the technical field of industrial wastewater treatment adsorbents, in particular to an adsorbent capable of removing heavy metals in industrial wastewater and a preparation method thereof. The preparation method of the adsorbent comprises mixing and stirring 10-20wt% sodium hydroxide and 80-90wt% water glass until the sodium hydroxide particles are completely dissolved to obtain an alkali activator; mixing 55-65wt% sawdust powder, 20 ~30wt% steel slag powder and 10~20wt% alkali activator are mixed, and ground for 0.5~1h to obtain mixed powder; the mixed powder is machine-pressed under a pressure of 100~150MPa to obtain steel slag sawdust geopolymer precursor; After drying the precursor at 50-80°C, keep it at 600-850°C under nitrogen protection for 1-2.5 hours to obtain the steel slag sawdust-carbon composite material; wash the steel slag sawdust-carbon composite material with deionized water until the pH of the washing water is 5-7 hours, the adsorbent can be obtained. The preparation method of the invention has the advantages of low cost, simple process, and easy industrial production, and the prepared and easily recycled adsorbent for removing heavy metals in industrial wastewater has good adsorption effect on heavy metals and is easy to recycle.

The invention discloses a method for preparing a garden rockery by utilizing construction waste regeneration, which relates to the technical field of rockery processing, and comprises the following steps: (1) manufacturing a mold, (2) crushing construction waste, (3) mixing materials, (4) carrying out pouring, (5) carrying out structural densification treatment, (6) carrying out demolding, and (7)carrying out modifying. According to the invention, the construction waste is used as a main material, and auxiliary materials such as polycaprolactone and the like are used for processing to preparethe rockery, so that the reasonable reutilization of the construction waste is realized, and the manufactured rockery is good in appearance quality, high in environmental protection property, good incompression resistance and high in water-retaining property, and facilitates cultivation of green plants on the rockery, so that the environment is beautified and purified.

The invention discloses a device for processing a wood-plastic composite by utilizing waste rigid plastic and modified coconut residuum. The device for processing the wood-plastic composite by utilizing the waste rigid plastic and the modified coconut residuum relates to the technical field of plastic regeneration, and is formed by a base, a smashing chamber, a cleaning chamber and a composite chamber. The device provided by the invention integrates smashing, cleaning and compositing into a whole; the combined processing of the waste rigid plastic and the modified coconut residuum can be quickly realized so as to prepare the wood-plastic composite; and the modified coconut residuum is replaced with wood flour, so that the processing cost is reduced, meanwhile, the coconut residuum is reasonably recycled, an economic value of the coconut residuum is improved, and new application of the coconut residuum in the field of the wood-plastic composites is realized.

The invention relates to a plant fiber / waste FPR composite material and a preparation method thereof. The preparation method comprises the following steps: dispersing 50-80% of plant fibers and 5-20% of PVA fibers in water in percentages by weight and uniformly stirring, then adding 10-30% of waste FPR powder wetted by a wetting agent in percentages by weight, and uniformly stirring to obtain a fluid to be treated; and carrying out papermaking and molding on the fluid to be treated to obtain wet paper sheets, and squeezing and drying to obtain the plant fiber / waste FPR composite material. According to the preparation method disclosed by the invention, the waste FPR and the plant fibers serve as main materials, PVA fibers serve as adhesives, so that the plant fibers and the waste FPR are combined well, and the strength property of the material is improved effectively; the wetting agent facilitates dispersion of the waste FPR in a system, properties of the various components are played fully, the composite material with good properties is prepared by a wet-method papermaking technology, and reasonable reusing of resources is realized; and the preparation method is simple and feasible, and the recycling rate is high and can reach 100%.