154 results about "Volatile phenols" patented technology

The invention discloses a process method for treating coking wastewater. The process method solves the technical problems that a micro-electrolysis method has hardening, channeling and narrow applicability of a pH range and a biochemical treatment process has long flow, large occupied area, poor impact load resistance and high expense. The method comprises a physical-chemical treatment unit consisting of a micro-electrolysis reactor and a settling tank; in the micro-electrolysis reactor, scrap iron, scrap copper and a lightweight blocky material are used as fillers; the pH of inlet water is between 2.0 and 6.0; the waterpower retention time is between 20 and 60 minutes; the method adopts air aeration; the method also comprises a filtering type inner circulating three-phase fluidized bed reactor biochemical treatment unit, and immobilized activated sludge balls are utilized to realize simultaneous denitrification and decarburization; the pH of inlet water is between 7.2 and 8.5; the concentration of dissolved oxygen is between 2 and 6mg/L; the temperature is between 28 and 32 DEG C; the waterpower retention time is between 20 and 40h; the COD of outlet water reaches secondary standard of integrated wastewater discharge standard; and volatile phenol, ammonia nitrogen and chroma reach primary standard of integrated wastewater discharge standard.

The invention relates to a preparation method of cyclodextrin graft-immobilized cellulose acetate. The preparation method comprises the following steps: a. preparation of cellulose acetate modification finishing liquid; b. leaching and rolling process; c. baking process; d. water washing for removing impurities; and e. drying. The cyclodextrin graft-immobilized cellulose acetate prepared by the method provided by the invention can be applied to cigarette filter tip materials and can be used for reducing harmful components such as benzene and benzene-series compounds, volatile phenol compounds, polycyclic arenes, heavy metals and the like in main smoke of the cigarette, or improving the dyeing stability and dyeability of cigarette cellulose acetate tows, or prolonging the fragrance of the cigarette filter tip and the sustained release of the fragrance. The preparation method has the advantages that: citric acid is used as a crosslinking agent, cyclodextrin is firstly grafted to cellulose acetate, and used citric acid is a food additive and has better safety; and for cigarette manufactures, by adoption of the modified cellulose acetate filter tip with a selective harm reducing effect, expensive composite shaping machine is not purchased, the cost is lowered and significant economic benefit is achieved.

The invention discloses a method for quantificationally detecting phenolic compounds in solid-state fermentation products and belongs to the technical field of analysis of solid-state fermentation products. The method is mainly suitable for determination of the content of phenolic compounds in solid-state fermentation products of liquor, wherein the phenolic compounds includes yeast for preparing hard liquor, fermented grains and cellar mud. The invention particularly relates to ultrasonic extraction, headspace solid-state-phase micro-extraction and gas chromatography-mass spectrogram combined qualitative and quantitative analysis of solid-state fermentation products. The method built by the invention can be used for quickly detecting 10 kinds of volatile phenolic compounds in the solid-state fermentation products; the phenolic compounds have a favorable linear relationship R2 is more than 0.99 within a detection range; all detection limits are less than 10microgramme/L; the relative standard deviation is less than 10%; and the recovery rate is 75%-110%. The technical scheme provided by the invention is simple, convenient and quick, can be used for achieving effective monitoring of the volatile phenolic compounds in the solid-state fermentation products, and has the great significance in improving the quality of final products.

The invention discloses a high performance liquid chromatography determination method for volatile phenolic compounds in white spirits. By adopting a high performance liquid chromatogram-fluorescence detector (HPLC-FLD) technique to analyze volatile phenolic compounds in white spirits, the method of the invention, when used in analysis of volatile phenolic materials, can determine the following 10 volatile phenolic compounds of phenol, guaiacol, p-cresol, m-cresol, o-cresol, 4-methylguaiacol, 4-vinylphenol, 4-ethylphenol, 4-vinylguaiacol and 4-ethylguaiacol in white spirits. And the method has the advantages of no need for derivatization, high accuracy, high sensitivity and good repeatability.

The invention relates to a method of preparing phenolic resin through liquefaction of lignin by using ionic liquid. The invention is characterized in that ionic liquid which comprises mono-core or double-core nitrogen-containing cations of alkyl imidazole, alkyl pyridine, quaternary ammonium salt and the like and anions and is in a liquid state at room temperature is used as a liquefaction reagent to liquefy lignin and a product of liquefaction is used to prepare the phenolic resin. Compared to the traditional phenol/sulfuric acid method, the liquefaction method provided in the invention has the characteristics of simple flow, a high liquefaction ratio, low corrosivity, clean process, capacity of adjusting the structure of the liquefaction reagent, repeatedly using the liquefaction reagent and facilitating environmental protection, etc.; the phenolic resin prepared from lignin does not contain volatile phenol, thereby reducing release amount of formaldehyde and being energy saving and environment friendly.

The invention discloses a coking wastewater purifying agent as well as a preparation method and an application thereof and belongs to the technical field of environmental protection. The purifying agent consists of a coagulant, a coagulant aid and an accelerant, wherein the coagulant consists of an iron salt, an aluminum salt, a magnesium salt and a zinc salt; the coagulant aid consists of PAM (polyacrylamide) and bentonite; and the accelerant consists of zeolite powder and chitosan. The purifying agent is powdery, is convenient to use, and is simple in preparation process and low in cost. The purifying agent is applied to treatment of coking wastewater to effectively reduce COD (chemical oxygen demand) and the concentrations of ammonia nitrogen, chroma, volatile phenol and cyanide in the coking wastewater, and the quality of produced water is stable.

The invention discloses a process for treating tar product wastewater, which can improve the ratio of BOD/COD of the wastewater, reduce the concentration of ammonia thereof and the concentration of volatile phenol, and further lead the wastewater to be recycled or discharged without pollution. The process for treating the tar product wastewater is characterized in that: a. the wastewater which is generated by cleaning is conducted into a primary settling tank to be settled so as to remove the settled impurities; b. the wastewater is conducted into a wastewater circulating pool so as to remove big granular matters, partial suspended matters and partial oil, and reduce the content of COD; c. the wastewater is conducted into a coagulating air floating machine so as to remove the oil, slag, ammonia and nitrogen; d. the wastewater is conducted into an intermediate settling tank to settle the impurities of the coagulating air floating tank and simultaneously regulate the water quality; e. the wastewater is conducted into a hydrolytic acidification tank and the function of an anaerobe is utilized so as to degrade the refractory organic matters with big particles and molecules into biodegradable organic matters with small molecules; f. the wastewater is conducted into a contact oxidation tank, and under the contact oxidation action of aerobic bacteria, through aeration, the organic matters in the wastewater are absorbed and degraded by the aerobic bacteria; and g. the wastewater is recycled or discharged after reaching the standards after being settled by the inclined settling tank and treated by the post-treatment process.

The invention provides a method for treatment of wastewater from dry distillation of coal. By adopting a technology of combining units of oil isolation, cyclone air flotation, filtration, extraction dephenolization, rectification and ammonia distillation, biological oxygen deprivation, SBR oxidation, CWPO oxidation, coagulation sedimentation and the like, the method can effectively remove organicpollutants like coal tar, ammonia nitrogen and phenols in the wastewater from dry distillation of the coal, wherein the oil removal rate of a cyclone air flotation unit reaches 93.8%; the volatile phenol removal rate of an extraction dephenolization unit reaches 98.3%; and the ammonia nitrogen removal rate of a rectification and ammonia distillation unit reaches 95.8%. The method provided by the invention has mature technology, is stable and reliable, can treat the wastewater from dry distillation of the coal to reach the direct discharge requirements of the Emission Standard of Pollutants forCoking Chemical Industry GB16171-2012, and has popularization values.

The invention discloses a method for simultaneously measuring 10 volatile phenol compounds in white spirit and establishes a method for measuring volatile phenol in the white spirit through dispersing liquid-liquid microextraction-FLD-HPLC. When a dispersant is tetrahydrofuran, aether, ethanol, propanol, isopropanol, acetone or a mixture thereof, an extracting agent is dichloromethane or chloroform, the mixing ratio of the dispersant to the extracting agent is 7:3, 6:4 and 5:5, and the total volume using amount is 1.5 and 2ml, 5ml of diluted white spirit sample is extracted and the 10 volatile phenol compounds are measured, wherein the labeling recovery rate is 81.0 to 103.4 percent; the RSD value is 0.9 to 3.1 percent; and the detection limit is 0.0025 to 0.0506 ug/mL. Compared with the traditional liquid-liquid extraction method, the method has the advantages of small using amount of the sample, small using amount of the organic solvent, short pretreatment time and, the like.

The combined process of treating high concentration and high colority effluent from acetaminophen production includes the steps of pumping the effluent into oxidizing reaction pond, adding catalyst, heating, air aeration and oxidant treatment, coagulation and decoloring. The present invention solves the difficult problem of treating effluent from production of p-aminophenol material, and the treating process has effluent colority eliminating rate not lower than 99.9 %, water colority index lowering of 10 times and volatile phenol index lower than 1.0 mg/L, and is favorable to post biochemical treatment. The present invention may be industrial used.

The invention discloses a method for treating sulfanilamide pharmaceutical wastewater by compound microbial preparation. The method comprises the following steps: putting a compound microbial preparation into a biochemical tank, wherein the initial concentration of the compound microbial preparation is 0.02-0.05% of the volume of the biochemical tank. The method for treating sulfanilamide pharmaceutical wastewater by compound microbial preparation has the following beneficial effects: the compound microbial preparation is directly put into the biochemical tank so as to improve the treatment effects by the highly effective degradation characteristics of the microorganisms, so that the treatment difficulty is reduced; moreover, the method is low in cost, and is capable of realizing effective eliminations and reductions of pollutants in the wastewater, including COD, ammonia nitrogen, aniline, volatile phenol and the like.

The invention discloses a preparation method a formaldehyde-free protein-based wood adhesive. According to the invention, fresh plant stems and leaves are added into water, and are crushed and press-filtrated, such that a juice is obtained; soybean meal and separated animal protein or separated vegetable protein are sieved by using a sieve of 60 to 300 meshes; the meshed materials are stirred with water according to a ratio of 0-1:1-0:5-15, until a crude protein content of the mixture is 7 to 20%; the mixture is placed in a reactor, and is stirred for 30min to 5h under a temperature of 45 to 65 DEG C and a pH value of 8.5 to 13.5, such that the mixture is subject to a reaction; when the temperature is reduced to 35 to 45 DEG C, the fresh plant stem and leaf juice obtained through the press-filtration step is added to the mixture of protein and water while stirring, wherein the juice takes 0.1% to 50% of the weight of the mixture; the content of adhesive mass crude protein is controlled, that when the adhesive is used in a plywood, the content is 11 to 13%, and when the adhesive is used in a fiber board, the content is 5 to 7%; the pH value of the material is regulated to 7.5 to 10.5, and the material is stirred for 15 to 45min; 0.00 to 0.50% of a preservative is added, and polyphenol is blended. The adhesive provided by the invention is not polluted by free formaldehyde, volatile phenols, isocyanate or synthetic resin. A conflict of protein denaturation and hydrolysis can be regulated by using a heat denaturation technology. When denaturation is finished, the reaction temperature and the pH value can be reduced instantly. With the invention, the produced artificial plates satisfy an international standard of II grade plates. After the plates are boiled for 4 hours by boiled water with a temperature of 100 DEG C, adhesive failure is not occurred.

The invention discloses microbes capable of degrading phenol and cyanogen in coking waste water and a method for treating coking waste water by using the same, which relate to microbes for degrading phenol and cyanogen in coking waste water and a method for treating waste water by using the same. The invention solves the problem that micromolecule harmful substances in the coking waste water treatment process, such as volatile phenol and cyanides, are difficult to remove. The microbes capable of degrading the phenol and the cyanogen in the coking waste water comprise bacillus subtilis BHF3-4, bacillus JhqK9-1 and acid-producing klebsiella JhqM8. The method for treating the coking waste water comprises the following steps: 1. inoculating the microbes capable of degrading the phenol and the cyanogen in the coking waste water to a membrane biological reactor (MBR); 2. and treating the coking waste water. When the method is used for treating the coking waste water, the removal rate of the volatile phenol in the coking waste water can reach 99.6-99.9%, and the removal rate of cyanides can reach 99.5-99.7%, thus, the outlet water can reach the Chinese first-class emission standard.

The invention provides a method for treating coking wastewater by using ozone under catalysis of activated carbon. The method comprises the following steps of: continuously leading coking wastewater into a catalytic reactor in which activated carbon particles are fed in advance, continuously introducing ozone into the reactor from the bottom of the reactor so that the coking wastewater, activated carbon and ozone have reaction completely; enabling the treated waste water to flow into a settling tank, separating treated effluent water from activated carbon flowing out together with water, feeding the separated activated carbon into the reactor again through a pump, leading the effluent water to the following biological treatment technique. The COD removal rate of the coking wastewater treated by adopting the method is more than 60%, the removal rate of volatile phenol can is more than 90%, and the chromacity is obviously removed.

The invention provides a preparation method of a tourmaline/magnetic chitosan microsphere treatment agent which is prepared by dissolving and uniformly mixing mixed powder of tourmaline and magnetic chitosan microspheres in sodium alginate and polyvinyl alcohol, and solidifying and balling. The magnetic chitosan microsphere is prepared by using superparamagnetic ferroferric oxide, 1 to 10 weight percent of chitosan acetic acid liquid, liquid paraffin, Span-80 and glutaraldehyde as reaction materials through an emulsion crosslinking method, wherein the mass ratio of the superparamagnetic ferroferric oxide to the chitosan acetic acid liquid is 1:(1-10), the volume ratio of the liquid paraffin to the Span-80 is (10-100):1, the volume ratio of the chitosan acetic acid liquid of superparamagnetic ferroferric oxide to mixed liquid of paraffin-Span-80 is 1:(1-10), and the volume ratio of the mixed liquid of superparaferroferric oxide, paraffin and Span-80 to glutaraldehyde is (5-50):1. According to the water treating agent, the removal rate of volatile phenol in water is between 80 and 90 percent, the removal rate of chromium in water is 93 percent; and the magnetic chitosan microsphere treating agent has the advantages of large adsorption capacity, high purification efficiency, low cost, regeneration, no toxicity, no pollution to environment and the like.

The invention belongs to the technical field of the environment detection, and particularly discloses an application of a kjeldahl apparatus for measuring micromolecular harmful substance. The micromolecular harmful substance comprises volatile phenol and cyanide. The kjeldahl apparatus is provided with an alkali liquor opening, an acid liquor opening, a steam pipe and a water opening. The steam pipe is connected with the water opening. The steam pipe is internally provided with a pH sensing electrode. The application comprises the following steps: washing the pipeline of the kjeldahl apparatus, and adding a sample to be measured to the kjeldahl apparatus pipe, adding a indicator, adjusting the pH value, distilling, and collecting distillate for measuring. The distilling pretreatment process of the volatile phenol and cyanide in the water, soil and municipal sludge can be solved by the distilling device of the kjeldahl apparatus. The environmental and safe distilling method for measuring the cyanide in the water, soil and municipal sludge is established, and an experimenter is avoided to be hurt by the poisonous gas. The detection solution is simple and easily operated. The accuracy of the method is high, and the application prospect is extensive.

The invention discloses coking wastewater compound chemical and a preparation method thereof and application thereof, and belongs to the field of waste water treatment. The coking wastewater compound chemical is composed of a denitrfying agent and a coagulate flocculating agent. After magnesium salt, phosphate, an alkali adjusting agent and active carbon are mixed fully, drying is carried out at 70-100 DEG C for 60-90 minutes to prepare the denitrfying agent; ferric salt, aluminum salt, PAM, an alkali adjusting agent and kieselguhr are mixed fully, and then drying is carried out at 60-60 DEG C for 30-60 minutes to prepare the coagulate flocculating agent. The preparation technology of the coking wastewater compound chemical is simple, and cost is low. The coking wastewater compound chemical is applied to treatment of coking wastewater, the content of COD, the content of ammonia nitrogen, the content of volatile phenol and the content of cyanide in the coking wastewater are reduced effectively, and the burden of follow-up biological treatment is relieved.

The invention belongs to the technical field of waste water treatment, and in particular relates to a method for improving the quality of waste water to meet standards based on activated carbon regenerable treatment, and also relates to a system used in the above method, and also relates to the system used. The method for treating waste water in a reproducible manner by using activated carbon in the present invention comprises the following steps: (1) treating waste water with granular carbon adsorption; (2) regenerating the granular carbon adsorbed by waste water. The invention utilizes the rich pore size on the surface of the granular carbon to effectively adsorb various substances in the wastewater, reducing the content of COD, volatile phenol, chroma, cyanide, etc., and the activated carbon is reproducible, which can realize fully automatic operation and clean production during the treatment process , The purpose of increasing efficiency and reducing costs.

The invention provides a hydrogen-rich water filter element and a preparation method thereof. The hydrogen-rich water filter element comprises ingredients by weight: 20 to 30% of magnesium oxide, 15 to 25% of calcium carbonate, 10 to 20% of kaoline, 5 to 10% of magnetic material, 5 to 10% of tourmaline, 5 to 10% of mica, 4 to 8% of titanium oxide, 4 to 8% of copper oxide and 2 to 5% of rare earth. All the raw materials are ball-milled, are placed into a die to be pressed and then are fired to form the hydrogen-rich water filter element. The hydrogen-rich water filter element provided by the invention not only can filter out large-particle macroscopic substances in water, such as rust, silt, eggs and the like, but also can filter foreign odor, peculiar smell, volatile phenols, heavy metal ions and various fungi and germs, and enables the water to reach the health drinking standard; the water filtered by the hydrogen-rich water filter element provided by the invention has oxidation resistance, can effectively remove reactive oxide species, and solves various skin problems.

The invention discloses a method for rapid separation and determination of seven volatile phenols in flue gas of main cigarette flow. An ultra-high-performance liquid-phase chromatographic column is adopted, a mobile phase contains beta-CD aqueous solution, acetonitrile and acetic acid, and the seven volatile phenols in the flue gas of the main cigarette flow can be separated and determined rapidly within 9min. The working efficiency can be greatly increased, the costs of analysis and detection can be saved, and the method has a value for large-scale application and promotion.

The invention provides a method for determining volatile phenol in water. In color reaction using 4-amino-antipyrine direct spectrophotometry to determine volatile phenol in water, the method uses Tween-80 as nonionic surfactant to play a role in stability augmentation and sensitivity enhancement, reduce system blank value and improve determination sensitivity. The method comprises the following steps: accurately shifting 1.00 mu g/mL of freshly prepared phenol-standard solution or a certain amount of to-be-determined water sample subjected to predistillation into a 50mL colorimetric tube; adding water to a scale; adding 0.50 mL of ammoniacal buffer solution and fully mixing the materials; adding 0.40 mL of 1 percent Tween-80 solution and mixing the materials well; adding 1.50 mL of 2 percent 4-amino-antipyrine solution and fully mixing the materials for 2 minutes; adding 1.00 mL of 8 percent potassium ferricyanide solution, fully mixing the materials for 1 minute and keeping the mixture stand for 10 minutes; and then determining the absorbance value of the mixture. A colored compound solution prepared in the invention is stable for at least 2 hours, thus the stability of the colored compound solution is greatly enhanced than that in the prior method before improvement, and the colored compound solution is obviously lower in blank absorbance value and higher in sensitivity, and has detection limit lower than that of the national standard method. The method has the advantage of determining the volatile phenol in tap water samples, along with high recovery rate and accurate results.

The invention relates to a treatment method of phenolic wastewater in production of sebacic acid. The treatment method comprises the steps that high salt phenolic wastewater is subjected to extracting and phenol removing by an extraction agent, and then biochemical treatment is performed by using halophilic microorganisms, so that CODCr and volatile phenol in the wastewater can reach the standard, meanwhile phenolic substances in the wastewater are recycled; the extraction agent is selected from at least one of phosphate esters, alkylamines, castor oil, kerosene or diesel oil or a mixture thereof. The treatment method adopts a method of combination of physical and chemical extraction and halophilic microorganism biochemical treatment, by firstly utilizing an efficient extraction agent, the phenolic substances in the wastewater are removed and recycled, meanwhile the CODCr and the phenol concentration of the wastewater are reduced; then by utilizing halophilic microorganism flora, the extracted wastewater is not subjected to a desalination technology or attenuation, but the biochemical treatment is performed directly, so that the CODCr and the phenol content in the wastewater can reach the standard, and the wastewater treatment cost is reduced.

The invention belongs to the technical field of biological engineering, and provides a high-efficiency biological phenol-reducing microbial inoculum and an application method thereof. The composite microbial inoculum consists of two strains. The strains are separated from a phenol-containing wastewater treatment system, and respectively are alcaligenes and bacillus cereus identified by 16SrDNA. The preservation numbers of the two strains are CGMCC NO.16158 and CGMCC NO.16157 respectively. When in use, according to the content of volatile phenol in inlet water in a sewage system, alcaligenes and bacillus cereus powder are mixed and activated according to a weight ratio of (1-3):1, then aerobic sludge is inoculated with the obtained bacterial according to a volume ratio of 1:(100-1000), andthe phenol-reducing capacity in 12 hours reaches 99%. The strains are easy to culture and propagate, and are prepared into solid bacterial powder which is convenient to transport and store. The amountand the proportion of the bacterial powder can be selected according to the water quality of inlet water when in use, and the strains are separated from a sewage treatment system and have the advantages of strong environmental adaptability, strong phenol resistance, high degradation concentration, high degradation speed and difficult secondary pollution.

The invention relates to a comprehensive treatment method for wastewater of a coal coking device. The method comprises the following steps of: removing oil and suspended matters from once-through cooling spray wastewater, cooling 80 to 99 percent of wastewater in an air cooling tower, circularly using the cooled wastewater as cooling spray water, and mixing the rest wastewater serving as once-through cooling spray blowoff water and tar distillation wastewater subjected to oil-water separation for treatment; performing advanced oil removal and dephenolizing treatment on the mixed wastewater, recycling dirty oil and volatile phenol from the mixed wastewater, and introducing effluent obtained through treatment into a comprehensive oily sewage treatment system; and treating comprehensive oilywastewater from other sources by using biochemical methods including an intermittent activated sludge process, and recycling effluent obtained through treatment and serving as make-up water of the once-through cooling spray water. By the method, the wastewater can be totally recycled or circularly used, pollutants are effectively recycled, and aims of saving water, reducing emission, recycling wastes and reducing source pollution loading; and the method has obvious environmental benefit and better economic benefit.

The invention relates to a portable multifunctional sample processing instrument for environmental detection. Air and water samples are used as processing objects. , Carrier gas stripping and trapping absorption process, direct detection of the absorption liquid can be used for quantitative analysis. The instrument is composed of a gas passage and a control circuit, which work together. The gas passage is mainly composed of a gas extraction pump, a flow meter, a gas washing pipe, a reaction pipe and an absorption pipe, while the control circuit is mainly composed of a lithium power supply, a time relay, a lighting lamp, and a control Buttons and the like are connected by conductive wires. The instrument can be used as an air sampler for the sampling and absorption of formaldehyde, ammonia, hydrogen sulfide, hydrogen cyanide, volatile phenol, sulfur dioxide, nitrogen oxides, mercury and other gaseous substances in the air, and can also be used for water, food, etc. Extraction and enrichment treatment of mercury, arsenic, antimony, cyanide, sulfide and other substances in various media. The instrument structure is ingeniously designed, small in size, light in weight, easy to operate and efficient. It adopts DC power supply and can be carried around, especially suitable for field and field use.

The invention discloses a preparation method of high-adsorptivity activated semi-coke. The high-adsorptivity activated semi-coke is prepared through the following four steps: crushing raw material semi-coke; performing de-ashing treatment; performing ZnCl2 activation; and obtaining ultra-pure activated semi-coke. According to the preparation method disclosed by the invention, the semi-coke is de-ashed with a flotation method or/and a chemical method before being activated, so that the ultra-pure semi-coke is obtained; and then the ultra-pure semi-coke is activated, so that the obtained ultra-pure activated semi-coke has high adsorptivity. The invention also discloses an application of the high-adsorptivity activated semi-coke, which is prepared with the preparation method disclosed by the invention, to waste water treatment. The high-adsorptivity activated semi-coke prepared with the preparation method disclosed by the invention can be used for deep treatment of waste water, and the rate of removing COD and volatile phenol in the waste water is high, so that the high-adsorptivity activated semi-coke is a high-quality carbon adsorbent; and besides, the cost is low, so that the high-adsorptivity activated semi-coke can completely replace activated carbon to be used as a water purification adsorbent.