37results about How to "Efficient removal ability" patented technology

The invention discloses a preparation method of a porous hydrogel adsorbent based on astragalus mongholicus waste residue. The preparation method comprises the following steps: taking traditional Chinese medicine astragalus mongholicus waste residue as a precursor, performing NaClO2 bleaching, KOH alkali washing and high-power ultrasonic treatment to obtain a uniformly dispersed cellulose nanofiber precursor solution; adding the cellulose nanofiber precursor solution into a mixed solution of N-N'methylene bisacrylamide, acrylic acid and ammonium persulfate, uniformly shaking, and carrying out polymerization reaction at a preset temperature to form blocky gel; and washing the blocky gel, placing the blocky gel in a dimethyl sulfoxide solution containing epoxy chloropropane for reaction, transferring the reacted product into a sodium hydroxide aqueous solution containing triethylene tetramine for reaction, and finally obtaining the amino functional modified porous hydrogel adsorbent. The traditional Chinese medicine waste residues are subjected to resource utilization, and the synthesized gel adsorbent can be further applied to adsorption removal of heavy metals and is excellent in adsorption performance, low in cost, high in stability, high in ion interference resistance and good in reusability.

The invention discloses a method for quickly granulating aerobic sludge and belongs to the technical field of wastewater treatment. According to the invention, a system F / M ratio is controlled for boosting the quick granulating of the aerobic granular sludge and forming the granule sludge with high settling velocity and abundant microbial community structure. The method disclosed by the invention can solve the problem of long forming time of the aerobic granular sludge.

The present invention provides an Alcaligenes sp. strain HO‑1 with a preservation number of CGMCC No. 16549, which is isolated from a semi-short-path nitrification reactor for treating pig farm wastewater. The strain has been deposited in the General Microbiology Center of the China Committee for the Collection of Microbial Cultures on September 28, 2018, and the preservation number is CGMCC No.16549. Alcaligenes provided by the present invention can efficiently remove ammonia nitrogen, and can independently convert NH 4 + converted to gaseous nitrogen product (N 2 O, N 2 ). When treating ammonia-nitrogen-containing wastewater, it can realize the whole process of denitrification under a single strain and a single condition, which is more advantageous than the traditional biological denitrification process of aerobic nitrification-anaerobic denitrification in terms of operation and economic benefits. In addition, the strain has a wide range of C / N ratio, temperature, pH and dissolved oxygen adaptability, and can tolerate and remove high concentrations of ammonia nitrogen.

The invention discloses a strain of Bacillus sp. W15 for efficiently removing the stench of sheep manure, which is preserved in the China Center for Type Culture Collection with the preservation number CCTCC NO: M 2017786. The present invention screens out a Bacillus strain that can significantly reduce the stench of sheep manure from the contents of the earthworm cavity, and the sensory evaluation and the detection of the content of the malodorous substance all show significant effects, which can improve the environment of the sheep house and prevent the malodorous substance from harming humans and animals. It has broad application prospects in health hazards.

The invention discloses a preparation method and application of wild straw mushroom mycelium with the function of efficiently removing dyestuffs. The wild straw mushroom mycelium which cannot be artificially domesticated and cultivated at present is subjected to solid and liquid fermentation and cultivation. The culture conditions were optimized and controlled, and the mycelia obtained from the liquid fermentation culture were used in the study of dye removal, which showed that it had efficient dye removal ability, and the dye decolorization rate was close to 100% after two days. The straw mushroom mycelium of the invention has wide application research value and potential development value for dye removal in industrial production wastewater such as textile wastewater and papermaking wastewater.

The present invention relates to an abnormal Wickerham yeast (wickerhamomyces anomalus) BT-1-1 and its use. Abnormal Wickham yeast BT‑1‑1 of the present invention is used to prepare yeast microbial preparations with high tolerance and high adsorption of heavy metals lead and cadmium, which includes activation of strains, expanded cultivation of yeasts, centrifugal separation, preparation of protective agents, addition of Steps such as protective agent and freeze-drying. The present invention has high tolerance and high adsorption of heavy metal lead and cadmium yeast microbial preparation, which has high-efficiency removal ability for heavy metal lead and cadmium, and the abnormal Wickham yeast of the present invention is used as an aroma-producing strain for producing wine, feed, etc., edible Safe and reliable.

The invention discloses a preparation method of a load type nanometer zero-valent iron composite material. The preparation method comprises the following steps: a) preparing a micro / nanometer grade composite flower-shaped self-supported Mg (OH) 2 microballoon' b) dispersing it to iron / ferrous ion solution with certain concentration; c) dropwise adding sodium borohydride solution in the mixed solution, and restoring iron / ferrous ion at original site to prepare Mg (OH) 2 loaded nanometer zero-valent iron. The preparation method has the following advantages: 1. the preparation method is soft in condition, simple in operation, green and environment-friendly and convenient to realize the quantitative production; 2, the raw material is wide in source and low in price, and good for reducing cost; 3, the load volume of the load type nanometer zero-valent iron is adjustable, the product shape is uniform and the dimension is controllable; 4, the nanometer zero-valent iron obtained by the invention has high-efficient removing ability for heavy metal ions, organic solution, dye and other environmental pollutants, and can be used as the water disposal agent in an environmental domain.

The invention discloses a metal ion doping Fe(OH) 2 The method for removing halogenated organic pollutants in water is to first configure Fe in an oxygen-free environment 2+ solution and lye, and the Fe 2+ The solution was slowly added dropwise to the lye, and after the addition was completed, it was left to stand to obtain Fe(OH) 2 The stock solution is for standby; then the divalent transition metal ion solution is configured in an oxygen-free environment for standby; then in an oxygen-free environment, Fe(OH) is added to the reaction vessel in turn 2 The stock solution and the divalent transition metal ion solution are neutralized by using hydrochloric acid to adjust the pH in the reaction vessel to obtain a decontamination solution; finally, the aqueous solution containing halogenated organic pollutants is added to the decontamination solution and shaken and mixed to carry out the decontamination reaction, that is, It can complete the removal of halogenated organic pollutants in water. The present invention utilizes Fe(OH) 2 The metal ions form a reduction system, which can completely dehalogenate HOCs in a short time, and has high-efficiency removal capability; the method of the invention is simple and convenient, easy to implement, and cost-saving.

The invention relates to the field of water pollution control and water body ecological restoration, and discloses an artificial floating bed composite ecological matrix, which comprises the following raw materials in terms of volume percentage: 60-75% of solid-state adsorption matrix, 24-37% of solid-state ecological improvement matrix and 1-3% of mud-like bio-enhanced matrix, wherein, in parts by weight, the solid-state adsorption matrix includes 10-15 parts of dolomite powder, 10-15 parts of shell powder and 1-3 parts of iron-manganese mud from waterworks, solid ecological The improved matrix includes 10-15 parts of charcoal powder, 2-4 parts of pine needle powder and 5-10 parts of rice husk ash; and a preparation method of an artificial floating bed composite ecological matrix is ​​also disclosed. The raw materials of the artificial floating bed composite ecological matrix of the present invention are cheap, easy to obtain, clean and harmless, the preparation process is simple, and the preparation process has little impact on the environment. Nitrogen and phosphorus substances have high-efficiency and continuous removal capacity.