32 results about "Polydimethyl diallylammonium chloride" patented technology

The invention relates to the technical field of sewage treatment, and discloses a quick-setting agent for coal mine sewage treatment and a treatment method, the quick-setting agent comprises the following components by weight: 1-4 parts of a Schiff base aid, 2-3 parts of modified lignin, 3-5 parts of poly dimethyl diallyl ammonium chloride, 4-8 parts of polyacrylamide, and 10-14 parts of aluminum sulfate. The quick-setting agent for coal mine sewage treatment provided by the invention has a relatively good quick-setting effect and can effectively remove heavy metal ions in sewage.

The invention discloses a clay stabilizer for a polymer dry powder direct distribution variable-viscosity fracturing fluid. The clay stabilizer is prepared from quaternary ammonium salt, an alcohol amine compound and a polyamine compound as raw materials in a solvent. The quaternary ammonium salt is quaternary ammonium salt with the carbon chain length of C12-C18; the alcohol amine compound is selected from at least one of ethanolamine, dimethyl propanolamine, hydroxyethyl piperazine, piperidine, isopropanolamine, triisopropanolamine, aminomethyl propanolate, hydroxyethyl ammonium salt and the like; the polyamine compound is selected from any one of poly dimethyl diallyl ammonium chloride, polyquaternary ammonium salt, poly allylamine, polyurea, polybutanediamine, polyethyleneimine, polyethylene polyamine and a polyethyleneimine cross-linked substance. The clay stabilizer disclosed by the invention is particularly suitable for polymer dry powder direct distribution variable-viscosity fracturing fluid, the stability of clay can be remarkably improved, particularly, excellent inhibition performance can still be kept under high-temperature and high-salt conditions, stratum damage is reduced, and the application requirements in complex environments of oil fields are met.

The application provides a modified activated carbon for removing perchlorate in water for sheep farms and a preparation method thereof, relates to the field of water treatment, and the method carries out reaction on activated carbon in a citric acid aqueous solution, uniformly loads a carboxyl layer on the surface of the activated carbon, and obtains preliminarily modified activated carbon; carries out reaction on the preliminarily modified activated carbon in an alkaline polydimethyl diallyl ammonium chloride aqueous solution, and strong cation quaternary ammonium salt is adsorbed on the surface of the carboxyl layer through electrostatic action, thereby obtaining secondarily modified activated carbon; and carries out reaction on the secondarily modified activated carbon in a triethylenetetramine aqueous solution, so that triethylenetetramine molecules are further combined to the strong cation quaternary ammonium salt through electrostatic adsorption, thereby obtaining the modified activated carbon for removing perchlorate in water for sheep farms, the adsorption capacity of the activated carbon for solutes with negative charges is significantly enhanced, and the treatment efficiency of the overall farm environment on perchlorate is improved.

The invention relates to the technical field of textile fabrics, in particular to a preparation method of a bio-based flame-retardant antibacterial textile fabric, which comprises the following steps: step 1, cleaning the textile fabric and then drying for later use; 2, sequentially preparing a solution A, a solution B and a solution C; wherein the solution A is a poly dimethyl diallyl ammonium chloride aqueous solution with the mass fraction of 3-7%; the solution B is a nucleotide salt flame retardant aqueous solution with the mass fraction of 15-30%; the solution C is a polyhexamethylene guanidine salt antibacterial agent aqueous solution with the mass fraction of 4-9%; 3, the standby textile fabric in the step 1 is sequentially subjected to A solution dipping, B solution dipping, C solution dipping and B solution dipping to form a cycle, roll compacting is conducted after each time of dipping till the pick-up rate is 90-100%, and the total number of cycles is 3-7; and drying the textile fabric to obtain the bio-based flame-retardant antibacterial textile fabric.

This invention discloses a nano-flocculator, its preparation method, and its applications. The preparation method includes: preparing a protein amyloid cellulose solution; adding a zirconium salt compound and mixing to obtain a zirconium-loaded protein amyloid cellulose composite solution; and mixing with a polydimethyldiallyl ammonium chloride solution. The nano-flocculator provided by this invention can be stored for a long time at room temperature, is easy to use, and is suitable for improving both sedimentation efficiency and phosphorus removal in municipal and industrial wastewater treatment processes, showing broad engineering application prospects and environmental friendliness.

The application discloses a flocculant for coking wastewater and a preparation method and application thereof, and comprises the following raw materials in parts by weight: 1-5 parts of polydimethyl diallyl ammonium chloride and 6-12 parts of a composite, wherein the composite is prepared from kaolin loaded N-succinyl-O-carboxymethyl chitosan and konjac glucomannan. The application aims at solving the technical problem that coking wastewater cannot reach the discharge standard.

This invention discloses a red pigment paste for color photoresist and its preparation method, relating to the field of photoresist technology. The red pigment paste for photoresist comprises the following materials: modified pigment red 177, propylene glycol methyl ether acetate, poly(methacrylic acid-co-acrylate) copolymer, acrylate resin, styrene-maleic anhydride copolymer, and antioxidant. This invention, by adding modified pigment red 177, works synergistically with the poly(methacrylic acid-co-acrylate) copolymer and polydimethyldiallyl ammonium chloride to inhibit pigment particle agglomeration, ensuring uniform dispersion of the pigment in the propylene glycol methyl ether acetate solvent, thus guaranteeing uniform and fine dispersion of the pigment paste. The antioxidant in this invention includes β-cyclodextrin, which can coat pentaerythritol tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate] and UV-327, improving the compatibility of the pigment paste system and extending the storage life of the pigment paste.

The invention relates to the field of functional materials technology, specifically to a preparation method, product, and application of hydrophobic melamine resin foam. The preparation method of hydrophobic melamine resin foam includes the following steps: Vacuum-impregnate the melamine resin foam with a solution of poly(dimethyl diallyl ammonium chloride). Subsequently, immerse the cationic-coated melamine resin foam in a sodium polyacrylate solution. Next, immerse the anionic-coated melamine resin foam in a titanium dioxide mixed solution for cross-linking. After cross-linking, immerse the melamine resin foam in a solution of tridecafluoro-octyl triethoxysilane. After impregnation, dry the foam to obtain hydrophobic melamine resin foam. The preparation method of the invention is simple, cost-effective, and easy to scale up for industrial applications. The hydrophobic melamine resin foam prepared using this method can achieve a hydrophobic contact angle of up to 150° and exhibits excellent oil absorption performance.

The present application relates to the field of environmental management technology, and more particularly to a composite coagulant for landfill leachate treatment and a preparation method thereof.The composite coagulant comprises inorganic coagulant, organic flocculant and nano coagulant aid; the inorganic coagulant is a mixture of polymeric aluminum ferric silicate and basic aluminum chloride; the organic flocculant is polydimethyl diallyl ammonium chloride; and the nano coagulant aid is a mixture of nano calcium oxide, nano ferric oxide and activated carbon.The composite coagulant has the characteristics of high efficiency in removing solid suspended matter and soluble organic matter in water, fast precipitation speed, one-step flocculation and sedimentation, formation of stable flocculation large particles in sewage, and effective reduction of the load of subsequent leachate treatment equipment.

The invention discloses a treating agent and a treating method for waste water-based drilling fluid, and belongs to the technical field of oil field waste drilling fluid treatment. Wherein the treating agent is composed of a gel breaker and a flocculating agent; the gel breaker is prepared from the following raw materials: 25wt%-30wt% of polyaluminum chloride, 0.1 wt%-0.2 wt% of cationic polyacrylamide and the balance of water. The flocculant is prepared from the following raw materials in percentage by weight: 1wt%-3wt% of poly dimethyl diallyl ammonium chloride, 0.5 wt% of a heavy metal stabilizer and the balance of water. According to the method, the waste drilling fluid can be quickly treated, the production requirements of an offshore drilling platform or a limited space can be met, meanwhile, the requirements of safety, environmental protection, water compatibility and the like are met, the problems of space occupation and cost caused by long-term storage and transportation of the waste drilling fluid are solved, and a method and a way are provided for green and quick offshore drilling. The method is suitable for treating the waste water-based drilling fluid in an offshore platform or other limited spaces.

The invention discloses an environment-friendly medicament for sewage treatment and a preparation method thereof, and belongs to the technical field of water treatment. The environment-friendly medicament for sewage treatment is prepared from the following raw materials in parts by weight: 15 to 20 parts of modified cellulose, 10 to 15 parts of layered double hydroxides, 25 to 30 parts of diatomite, 1 to 3 parts of 2-mercaptobenzothiazole, 20 to 25 parts of polyaluminum chloride, 5 to 8 parts of poly dimethyl diallyl ammonium chloride and 5 to 8 parts of ferrous sulfate. Wherein the modified cellulose is subjected to dual modification of quaternization and amino grafting. According to the environment-friendly sewage treatment agent, through innovative compounding of the modified cellulose, the layered double hydroxides and the 2-mercaptobenzothiazole, the diatomite is taken as a carrier and has a synergistic effect with other substances, so that suspended matters in water are rapidly reduced, an excellent removal effect on COD (Chemical Oxygen Demand), total phosphorus and heavy metal ions is also achieved, and the sewage treatment efficiency is remarkably improved. The sewage treatment environment-friendly medicament disclosed by the invention realizes the purpose of efficient and comprehensive sewage treatment, is environment-friendly and has a remarkable application value.

The invention relates to the technical field of degreasing agents, in particular to a long-acting circulating degreasing agent for preventing secondary pollution of cold-rolled silicon steel and a preparation method of the long-acting circulating degreasing agent. The invention discloses a long-acting circulating degreasing agent for preventing secondary pollution of cold-rolled silicon steel. The degreasing agent comprises the following raw materials in percentage by mass: 7-10% of sodium hydroxide, 3-5% of sodium carbonate, 1-3% of a non-phosphorus builder, 2-4% of a chelating agent, 10-12% of a neutral surfactant, 1-3% of a corrosion inhibitor, 0.5-2% of a composite flocculant, 1-3% of a defoaming agent and the balance of deionized water. The composite flocculant is composed of cationic polymer poly dimethyl diallyl ammonium chloride and silicon magnesium based nanosheets in a mass ratio of (1: 2)-(1: 10). The degreasing agent disclosed by the invention can realize high-efficiency degreasing (the degreasing rate gt is 90%) under a normal-temperature condition, and the clarity and the cycling stability of the degreasing fluid are greatly improved.

This invention discloses a composite cationic flocculant based on a dual gradient of molecular weight and charge density, along with its preparation and application methods. The flocculant is composed of a medium-molecular-weight, high-charge-density poly(diallylammonium chloride)-acrylamide copolymer (PDA) and a high-molecular-weight, medium-low-charge-density cationic polyacrylamide (CPAM), with an effective mass ratio of 10:1 to 20:1. The mass charge density of PDA is 2 to 3 times that of CPAM. A gradient shear mixing preparation process and a time-sequential synergistic flocculation application method based on differences in diffusion kinetics are employed. Through a relay effect of rapid charge neutralization (0-30 seconds) and slow bridging (30-180 seconds), the flocculant can form a skeleton-filled floc structure, achieving adaptive interception of dissolved organic matter and complexation-encapsulation and fixation of heavy metals. This invention can significantly shorten plate and frame filter press time and reduce the moisture content of the filter cake and the concentration of pollutants in the effluent.

The application discloses a one-dose flocculation solidification double-effect environment-friendly material and a preparation method thereof. The method takes metakaolin as an inorganic core, is subjected to hydrophobic modification through gamma-aminopropyl triethoxysilane, is subjected to reflux covalent grafting with polydimethyl diallyl ammonium chloride under the condition that pH is about 9, and is then subjected to spray drying to obtain spherical composite particles with a PDADMAC shell. The material has simple process flow, low dose and strong adaptability, can simultaneously reduce dewatering energy consumption and secondary pollution risk, and is suitable for solidification disposal of complex wastewater reduction and recycling.

The invention discloses a novel composite clarifying agent and a preparation method thereof, the novel composite clarifying agent comprises the following raw materials by weight: 20-40 parts of dolomite, 20-30 parts of limestone, 5-10 parts of anhydrous sodium sulphate, 3-5 parts of cerium oxide, 5-10 parts of chitosan, 3-5 parts of poly dimethyl diallyl ammonium chloride and 3-5 parts of a composite additive, and the invention relates to the technical field of inorganic nonmetal material preparation. According to the novel composite clarifying agent and the preparation method thereof, cerium oxide and sodium nitrate have a synergistic effect to generate oxygen, sodium sulfate and sodium chloride have a synergistic effect to generate chlorine, and tin oxide and water vapor react to generate hydrogen, so that a multi-gas synergistic effect is formed, and bubbles in molten glass are rapidly combined, grow, float and are discharged. According to the present invention, the prepared clarifier can continuously act for 72-100 h at the high temperature of 1550-1610 DEG C, the bubble elimination rate can achieve more than 98%, which is improved by 15-20% compared with the traditional clarifier, and the modern green manufacturing requirement can be met by abandoning the highly toxic white arsenic (As2O3) and the fluorine-containing compound and adopting the non-toxic and harmless cerium oxide, tin oxide and other components.

The application belongs to the field of water treatment equipment and application technology, and particularly relates to a selective electrodialysis device and application thereof. The selective electrodialysis device comprises an electrodialysis cell, an anode and a cathode arranged on the two sides of the electrodialysis cell, and a cation exchange membrane and an anion exchange membrane arranged between the anode and the cathode in sequence. The cation exchange membrane is made of sulfonated polybenzimidazole as a base material, and the surface of the cation exchange membrane is coated with polystyrene sodium sulfonate containing porous micro-nano materials. A protective layer containing polydiphenylpiperidine is coated on the side of the cation exchange membrane facing the anode. The anion exchange membrane is made of quaternary amine polyfluorosulfone or polyether sulfone as a base material, and the surface of the anion exchange membrane is coated with polydimethyl diallyl ammonium chloride. The device can efficiently separate monovalent ions and polyvalent ions, the functionalization of the ion exchange membrane increases the membrane charge density, promotes the rapid migration of ions under the action of an electric field, and improves the ion transfer rate. The device is stable in operation, has a high separation rate and a high current efficiency.

The invention discloses a digital intelligent control device for synthesizing poly dimethyl diallyl ammonium chloride, and belongs to the technical field of high polymer material synthesis. The device comprises a sensor module, a core control module, an execution module, a storage display module, an intelligent analysis module and a multi-terminal monitoring module. And the sensor module comprises multiple paths of temperature sensors and air pressure sensors which are arranged at the center and the outer edge of the reaction kettle. The method comprises the following steps: acquiring data at a first frequency after initialization; when a first time threshold value is reached, medicine adding is prompted; when a second time or temperature threshold value is reached, increasing the acquisition frequency to a second frequency; when the temperature reaches a second temperature threshold value, the automatic control execution module starts a cooling mechanism, and the temperature is dynamically stabilized in a target interval; according to the invention, the technical problems of low temperature control precision, discontinuous data acquisition and easy eruption in the PDMDAAC amplification experiment are solved, the precise, safe and intelligent control of the synthesis process is realized, and the product performance and the experiment teaching effect are improved.

The invention relates to the field of functional composite materials, and discloses a preparation process of an ecological leather fiber velvet composite material and a product. The preparation process of the ecological leather fiber velvet composite material comprises the following steps: S1, needling sea-island fibers to prepare a non-woven fabric; s2, carrying out gum dipping treatment by using a polyurethane gum dipping solution, and drying; s3, decrement splitting, water washing and drying; s4, softening treatment and sanding; s5, soaking with a pretreatment solution, dyeing with a dyeing agent, and drying; the pretreatment liquid in the step S5 contains a dyeing auxiliary agent composed of polydimethyldiallylammonium chloride, a methyl vinyl ether-maleic anhydride copolymer and bis [3-(triethoxysilyl) propyl] amine, and the dyeing agent is an acid dye containing sulfonate. According to the preparation method, through the preparation process of firstly sanding and then dyeing, and optimizing the types of the pretreatment liquid and the dyeing agent, the prepared ecological leather fiber velvet composite material has relatively good dyeing uniformity, color fastness and soft comfort, and the problem of white exposure after abrasion does not occur.

The invention relates to an electrolytic copper foil electrolyte, a copper foil, a preparation method of the copper foil, an electrode and a lithium battery. The electrolytic copper foil electrolyte comprises the following components in mass concentration: 80 g / L to 120 g / L of copper ions, 90 g / L to 120 g / L of sulfuric acid, 15 ppm to 30 ppm of chloride ions, 20 ppm to 80 ppm of a brightening agent, 5 ppm to 30 ppm of a walking agent and 1 ppm to 15 ppm of a leveling agent. The brightening agent comprises sulfonate, the displacement agent comprises at least one of fatty alcohol-polyoxyethylene ether and fatty amine polyoxyethylene ether, and the leveling agent comprises at least one of 2-mercapto-1-methylimidazole and poly dimethyl diallyl ammonium chloride. The electrolytic copper foil electrolyte can effectively improve the tensile strength and the elongation stability of the copper foil.

A treatment method for full resource recovery from sludge in municipal wastewater treatment plants is provided. Ozone is used to oxidize the cell contents of sludge, and the hermetia illucens pupa shell powder slurry, polydimethyl diallyl ammonium chloride and the like are used as conditioning materials and materials for improving the water retention performance of residues. The dehydrated products are prepared into soil water retention materials, the heavy metals separated from the sludge are recovered in a ferrite way, and the organic carbon in the liquid phase is utilized as a carbon source of a wastewater treatment plant.

The application discloses an environment-friendly agent for sewage treatment and a preparation method thereof, and belongs to the technical field of water treatment. The environment-friendly agent for sewage treatment comprises the following raw materials in parts by weight: modified cellulose 15-20 parts, layered double hydroxide 10-15 parts, diatomite 25-30 parts, 2-mercaptobenzothiazole 1-3 parts, polyaluminum chloride 20-25 parts, polydimethyl diallyl ammonium chloride 5-8 parts, and ferrous sulfate 5-8 parts, wherein the modified cellulose is subjected to double modification of quaternization and amino grafting. The environment-friendly agent for sewage treatment is innovatively compounded by the modified cellulose, the layered double hydroxide and the 2-mercaptobenzothiazole, takes diatomite as a carrier, and cooperates with other substances, so that the suspended solids in water are quickly reduced, and the COD, total phosphorus and heavy metal ions are also remarkably removed, and the sewage treatment efficiency is remarkably improved. The environment-friendly agent for sewage treatment realizes the efficient and comprehensive sewage treatment purpose, is environment-friendly, and has remarkable application value.

The invention relates to the field of textile industry, in particular to a treating fluid for improving a color fixing effect and a preparation method thereof. The color fixing agent is used for solving the problems that an existing color fixing agent is poor in color fixing effect, and treated fabric is insufficient in color fastness to light. The color fixation treating fluid is mainly prepared from poly dimethyl diallyl ammonium chloride-aniline grafted benzophenone quaternary ammonium salt, and is prepared by the following steps: firstly, synthesizing a fourth intermediate containing a benzophenone quaternary ammonium salt cationic group, and then synthesizing a fifth intermediate containing aniline and poly dimethyl diallyl ammonium chloride; a fourth intermediate and a fifth intermediate react to obtain polydimethyldiallylammonium chloride-aniline grafted benzophenone quaternary ammonium salt, and a quaternary ammonium salt cation group and a benzophenone group have a synergistic effect, so that the color fixation effect is remarkably improved, and the color fastness to light is also greatly improved; the fiber material is ensured to have high fixation rate and excellent dye adhesion stability after being dyed.

The present application relates to the technical field of flocculants, in particular to a kind of multi-core organic-inorganic composite flocculants and its preparation method and application, the multi-core organic-inorganic composite flocculants, by weight parts, include the following raw materials: inorganic polymer 70-90 parts, organic polymer 10-30 parts, polydimethyl diallyl ammonium chloride 1-5 parts, modified nano titanium dioxide 1-3 parts, deionized water 500-800 parts.The multi-core organic-inorganic composite flocculants prepared by the present application have excellent flocculation effect and stability and simple preparation method, wide application range, small dosage.

The invention belongs to the technical field of water treatment equipment and application, and particularly relates to a selective electrodialysis device and application thereof. The selective electrodialysis device comprises an electrodialysis tank, an anode and a cathode are respectively arranged on two sides of the electrodialysis tank, and a cation exchange membrane and an anion exchange membrane are sequentially arranged between the anode and the cathode; wherein the cation exchange membrane takes sulfonated polybenzimidazole as a base material, and the surface of the cation exchange membrane is coated with sodium polystyrenesulfonate containing a porous micro-nano material; one surface, facing the anode, of the cation exchange membrane is coated with a protective layer containing polybiphenylpiperidine; the anion exchange membrane takes quaternized polysulfone or polyether sulfone as a base material, and the surface of the anion exchange membrane is coated with poly dimethyl diallyl ammonium chloride. The device can efficiently separate monovalent ions and multivalent ions, functionalizes the ion exchange membrane to increase the charge density of the membrane, promotes rapid migration of the ions under the action of an electric field, improves the ion transfer rate, is stable in operation, and has relatively high separation rate and current efficiency.

The application provides a high-difficult water anti-impact water purifying agent and a preparation method thereof. The high-difficult water anti-impact water purifying agent is prepared from the following raw materials in parts by mass: sodium metaaluminate 10-15 parts, sodium silicate 5-10 parts, activated carbon 6-9 parts, carboxymethyl cellulose 6-13 parts, polyaluminum ferric chloride 15-20 parts, polyferric sulfate 12-18 parts, potassium chlorate 10-15 parts, polydimethyl diallyl ammonium chloride 5-10 parts, dicyandiamide formaldehyde resin 10-15 parts, and polyacrylamide 2-6 parts. The high-difficult water anti-impact water purifying agent prepared by the application can treat the turbidity and suspended solids of high-turbidity water, low-temperature and low-turbidity water, printing and dyeing wastewater and petrochemical wastewater, and the treated wastewater is colorless, odorless and has obviously reduced CODcr, BOD5, SS suspended solids, color value and bacteria; no secondary pollution is generated in the process of treating the printing and dyeing wastewater; the preparation process is simple, the cost is low, the performance is stable, and the application is convenient to popularize.

The invention discloses a neutral efficient sludge dewatering agent capable of adsorbing heavy metals and improving biological friendliness and a preparation method of the neutral efficient sludge dewatering agent, and belongs to the technical field of sludge drying and dewatering. The preparation method of the sludge dewatering agent comprises the following steps: preparing polyglucosamine by using poly N-acetyl glucosamine as a raw material, carrying out quaternization modification by using 2, 3-epoxypropyltrimethylammonium chloride, preparing poly dimethyl diallyl ammonium chloride by using dimethyl diallyl ammonium chloride as a monomer, and preparing the sludge dewatering agent by using poly N-acetyl glucosamine as a raw material. And fully loading the polyglucosamine quaternary ammonium salt on the poly dimethyl diallyl ammonium chloride to prepare a final finished product. The preparation method has the beneficial effects that the prepared sludge dewatering agent is neutral, has a charge neutralization and adsorption bridging dual synergistic flocculation mechanism, is excellent in dewatering performance and has certain heavy metal stabilization potential, and the biological friendliness is improved.

The invention discloses a neutral efficient sludge dewatering agent with heavy metal deep removal capacity and a preparation method of the neutral efficient sludge dewatering agent, and belongs to the technical field of sludge drying and dewatering. The preparation method of the neutral efficient sludge dewatering agent comprises the following steps: preparing carboxymethylated poly N-acetyl glucosamine, poly dimethyl diallyl ammonium chloride and acidified modified lignin, preparing iron modified lignin by taking the acidified modified lignin as a raw material; carboxymethylated poly N-acetyl glucosamine and poly dimethyl diallyl ammonium chloride are used as raw materials to prepare a carboxymethylated poly N-acetyl glucosamine / poly dimethyl diallyl ammonium chloride compound, and the iron modified lignin and the carboxymethylated poly N-acetyl glucosamine / poly dimethyl diallyl ammonium chloride compound are roasted and crosslinked. The sludge dewatering agent has the beneficial effects that the prepared sludge dewatering agent is neutral, has multiple synergistic flocculation mechanisms, is excellent in dewatering performance, and also has excellent heavy metal deep removal capability.

This application relates to the field of headliner materials for new energy vehicles, and discloses a lightweight moisture-proof headliner material for new energy vehicles and its preparation process. The lightweight moisture-proof headliner material for new energy vehicles is prepared by impregnating needle-punched nonwoven fabric with a water-based nitrile rubber solution and curing it. The water-based nitrile rubber solution is prepared from the following raw materials in parts by weight: 100-120 parts water-based carboxylated nitrile rubber, 18-25 parts nanocrystalline cellulose suspension, 4.5-6.5 parts dispersant, 1-3 parts crosslinking agent, 1-3 parts antioxidant, 0.2-0.5 parts defoamer, 0.2-0.5 parts colorant, and 40-60 parts water. The nanocrystalline cellulose suspension is composed of nanocrystalline cellulose, organomontmorillonite, polydimethyldiallyl ammonium chloride, 4-vinylbenzyltrimethylammonium chloride, a silane coupling agent, and an aqueous ethanol solution. The headliner material of this application will not expand, deform, warp, or discolor under long-term humid and hot conditions, and has good moisture resistance.

A conditioning method for deep dewatering of sludge from municipal wastewater treatment plants is provided. The method includes following steps: firstly, concentrated sludge is conditioned with polyhexamethylene biguanide to form polyhexamethylene biguanide conditioned sludge, subsequently, a pupa shell powder slurry, formed by treating hermetia illucens pupae shells with sulfuric acid, is added to the polyhexamethylene biguanide conditioned sludge to form a combined pupa shell powder slurry-polyhexamethylene biguanide treated sludge, finally, polydimethyldiallylammonium chloride is added to obtain the conditioned sludge, after mechanical dewatering of this conditioned sludge, deeply dewatered sludge is obtained.

The invention relates to the technical field of deodorant preparation, and particularly discloses a preparation method of a wet garbage compost deodorant. The deodorant comprises a composite flora consisting of bacillus subtilis, candida tropicalis, paracoccus denitrificans, bacillus methylotrophicus and agrobacterium oxydans, and is combined with a trehalose-glycerol-nano zinc oxide-L-cysteine hydrochloride freeze-drying protection system and a poly dimethyl diallyl ammonium chloride modified diatomite carrier. The preparation method comprises the following steps: separating a target strain from a wet garbage rotten substance, performing shake culture by a rejuvenation culture medium, inoculating to a seed culture medium, and performing aerated amplification; inoculating the compound seed solution into the solution A and the solution B step by step; mixing the fermentation liquor, adding a freeze-drying protective agent, and performing stepped cooling and freeze-drying to obtain bacterial powder; and finally, adding humic acid-nano titanium dioxide-beta-cyclodextrin, and loading on the modified carrier. The deodorant disclosed by the invention can be used for removing composite malodorous gas generated in a wet garbage composting process, and has the advantage of multi-strain synergistic degradation.