15results about How to "Reduce chroma" patented technology

The application relates to a sulfonic acid decoloring resin and a preparation method and use thereof. The application relates to a method for reducing the colority of acrylic acid and ester, methacrylic acid and ester. The method increases active groups after chemical modification of the resin, reacts with impurities causing product discoloration, separates and completely removes the discoloring impurities in the product, does not introduce new impurities into the product, greatly improves the colority of the product and the stability of the product, and ensures stable application of the product in the optical field.

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 flash deodorization method for lanolin, belonging to the field of lanolin refining technology. The method includes: S101: dissolving crude lanolin in 4-6 times its volume of anhydrous hot ethanol, then sending it to the upper part of a vacuum flash evaporator and spraying it downwards; S102: introducing hot nitrogen gas at a temperature of 95-105℃ into the lower part of the vacuum flash evaporator, with the nitrogen gas in countercurrent contact with the crude lanolin spray solution; S103: after circulating and spraying the crude lanolin in the vacuum flash evaporator for a certain period, sending it to a first oil-water separator for cooling, separating the ethanol to obtain lanolin. The exhaust gas from the vacuum flash evaporator is sequentially sent to a power wave tower, a condenser, a gas-liquid separator, and a vacuum device; anhydrous ethanol is circulated and sprayed in the power wave tower, with the spray solution temperature at 45-50℃. This patented method can deodorize lanolin to odorless levels and also has the advantages of significantly reducing color and achieving a high yield.

An optical ranging module is defined with an object side and an element side opposite to the object side, and comprises: an optical emission unit; an optical receiving unit; the supporting cover comprises a top and an annular side wall connected with the top, the top is provided with an object side surface, the annular side wall is provided with an outer surface, the top comprises two openings penetrating from the object side to the element side, and the optical transmitting unit and the optical receiving unit are arranged in the two openings respectively; the base is arranged on one side, facing the element side, of the supporting cover; the conductive film is arranged on the object side surface of the top of the supporting cover and the outer surface of the annular side wall; and an anti-reflective film covering the conductive film on the top of the support cover. The anti-reflection film can be made of a low-chromaticity and low-brightness material, so that the reflectivity of the top of the supporting cover is reduced, the measurement accuracy of the optical distance measuring module can be improved, and a terminal product (electronic device) is enabled to present a relatively consistent appearance.

The invention provides liquid polysulfide rubber as well as a preparation method and application thereof. The preparation method of the polysulfide rubber comprises the following steps: (1) preparing a polysulfide polymer; (2) cracking the multi-sulfur polymer obtained in the step (1) to obtain a cracking product; and (3) acidizing the organic solution containing the cracking product to obtain the liquid polysulfide rubber, in the step (3), a solvent in the organic solution is selected from at least one or a mixture of two or more of benzene, methylbenzene, xylene and ethylbenzene. According to the invention, the organic solvent is added into the cracking product, the organic solution of the cracking product is prepared firstly, and then the acidizing treatment is carried out, so that the operation is simplified, the chroma of the product is reduced, the product quality is improved, and the product has excellent oil resistance, ozone resistance and low-temperature performance and is wider in application range.

The invention discloses a method for synthesizing N-methyl-piperidine ethanol through reductive amination and application, and the method comprises the following steps: S1, mixing 2-piperidine ethanol as a reaction substrate with formaldehyde in the presence or absence of a solvent, adding a catalyst, introducing hydrogen, and reacting at the reaction temperature of 60-200 DEG C and the hydrogen pressure of 1.0-5.0 MPa to prepare a reaction solution containing a product, wherein the molar ratio of the 2-piperidine ethanol to the formaldehyde is 1: (1.1-1.5), and the catalyst is a NiZn / Al2O3 catalyst; s2, after the catalyst is recovered, when the solvent exists, the reaction liquid is subjected to reduced-pressure solvent recovery and then subjected to reduced-pressure rectification, and when the solvent does not exist, the reaction liquid is subjected to reduced-pressure rectification; and collecting fractions at 92-94 DEG C / 2 kPa in vacuum rectification to obtain the N-methyl-piperidine ethanol. The method has the advantages of high atom economy, green and environment-friendly production process, high yield and high selectivity, and is suitable for industrial large-scale production of N-methyl-piperidine ethanol.

The invention belongs to the technical field of photovoltaic array rainwater resource utilization, and provides a photovoltaic initial rainwater purification parameter control method and system based on potassium ferrate. Through potassium ferrate, microorganisms such as dust, bird droppings and pollen and oxidizable organic matters in the initial rainwater of the photovoltaic array are rapidly reduced under the strong oxidation effect, the peculiar smell and chromaticity are reduced, meanwhile, ferric hydroxide flocs are generated after reduction, particle trapping and colloid destabilization with a coagulant are achieved, and therefore bacteriostasis, organic matter reduction and rapid turbidity removal are synchronously completed; meanwhile, the adding quality of the potassium ferrate is determined according to the chromaticity and the turbidity, and through determination of the stirring strength, the reaction time and the pH value, on the basis that the purification effect is guaranteed, the accurate control over the agent adding amount is achieved under the condition that the chromaticity and the turbidity change.

This invention provides a process for the recycling and treatment of high-salinity wastewater, relating to the field of wastewater treatment technology. The process includes: Step 1: Analyzing the organic composition of various high-salinity wastewaters to determine the composition and content of materials; Step 2: Developing corresponding treatment plans for the specific components of each high-salinity wastewater; Step 3: Treating the high-salinity wastewater according to the treatment plan, and adjusting and optimizing the plan to remove organic matter and reduce the color of the high-salinity wastewater; Step 4: Evaporating the treated wastewater to precipitate salt, preparing qualified by-product salt or by-product sodium sulfite. Compared to traditional methods of removing organic matter from wastewater such as Fenton oxidation and biochemical processes, this invention is cleaner, more environmentally friendly, and more effective, significantly reducing the treatment cost of high-salinity wastewater.

The utility model discloses a modularization's landscape ecological floating island combination structure, including connecting main body frame, the connecting main body frame bottom middle part is equipped with counterbore, the side of connecting main body frame all symmetry fixedly connected with the plug -in rod, the connecting main body frame bottom fixedly connected with water supply subassembly and aeration subassembly, the side of plug -in rod all through plug -in rod swing joint has the planting frame, the planting frame top middle part all are equipped with mounting hole, the one side of planting frame close to connecting main body frame all are equipped with with the plug -in slot of matching of plug -in rod, the plug -in rod can insert plug -in slot inside, the planting frame top all are equipped with limit slot, the inside of planting frame all swing joint has planting subassembly and purification subassembly, the planting subassembly side bottom fixedly connected with positioning assembly. This structure realizes the modularization combination of assembly, adjusts the main frame according to the applicable scene, improves water quality through the synergies of plant and biological membrane and realizes floating island plant landscape effect.

The present application relates to a kind of methyl hexahydrophthalic anhydride preparation method, comprising the following steps: with the refined methyl tetrahydrophthalic anhydride that is not isomerized as raw material, raw material and hydrogen are sent into ebullated bed hydrogenation reactor, then special catalyst is added to carry out hydrogenation;Waste hydrogen and methyl tetrahydrophthalic anhydride light component are taken out by gas phase from the top of reactor, waste catalyst is taken out from the bottom of reactor, and the hydrogenation product crude methyl hexahydrophthalic anhydride is taken out by pump control liquid level from the side of reactor;Crude methyl hexahydrophthalic anhydride is sent into the separation device with thin film evaporator and is subjected to vacuum distillation, and finished product methyl hexahydrophthalic anhydride is obtained.The catalyst used in the present application has moderate activity, high hydrogenation efficiency;Catalyst and product have no separation process, less loss, low safety risk;Post-treatment process has high heat transfer efficiency, short residence time, low colority;Product has less by-product, high yield, stable acid value and anhydride group content, and excellent performance.

The present application relates to sewage treatment agent technical field, specifically relates to a kind of aluminum manganese composite coagulant and its preparation method and application.The preparation method provided by the present application includes the following steps: aluminum salt, manganese salt are dissolved, to obtain the solution containing aluminum salt and manganese salt;The solution containing aluminum salt and manganese salt, first mixing of alkaline solution, to obtain first mixed liquor;The first mixed liquor, sodium silicate solution and polyacrylamide solution are second mixed, and the second mixed liquor obtained is cured to obtain aluminum manganese composite coagulant.The aluminum manganese composite coagulant obtained by the preparation method of the present application has a more extensive pH adaptation range, improves the ability to remove natural organic matter, and can also reduce the color problem caused by manganese residue.Moreover, it is extremely easy to flocculate and settle during water treatment, which can reduce chemical residues.

The application discloses a process for treating dyeing wastewater by a membrane method, and comprises the following steps: pretreating the dyeing wastewater, including grating, adjusting pool, coagulation and sedimentation, and filtration, to obtain filtered wastewater; the filtered wastewater enters a security filter to be subjected to secondary filtration, to obtain secondary filtered wastewater; the secondary filtered wastewater enters an NXF membrane system, and the wastewater is divided into two streams, one of which is a concentrated solution which does not reach a set concentration, and the other of which is a permeate; the concentrated solution which does not reach the set concentration returns to a front end inlet to be subjected to filtration in the NXF membrane system again; when the concentration reaches the set concentration, the concentrated solution enters a concentration storage tank to be subjected to other treatment; and the permeate enters subsequent treatment. The application aims at solving the technical problem of poor treatment effect of dyeing wastewater.

The application relates to the technical field of organic pollutant degradation, and discloses a preparation method of a copper iron sulfide bimetallic catalyst, which comprises the following steps: under anaerobic conditions, copper chloride and iron powder are added into an acid buffer solution, a sodium sulfide solution is added after the mixture is uniformly mixed, and the copper iron sulfide bimetallic catalyst is obtained after reaction and filtration; the molar ratio of the copper chloride and the iron powder ranges from 0.3 to 1.3; and the molar ratio of the sodium sulfide and the iron powder ranges from 0.046 to 0.46. The copper iron sulfide bimetallic catalyst containing the main component CuFeS2 is prepared by exploring the feeding molar ratio of copper, iron and sulfur. The catalytic performance of the copper iron sulfide bimetallic catalyst prepared by the method is effectively improved. After the copper iron sulfide bimetallic catalyst is used to treat organic wastewater, the removal efficiency of the organic matter is maintained stable, and there is no leaching of metal Cu and Fe. The catalyst has the advantages of low treatment cost, simple operation condition and high efficiency, and provides a new method for low-carbon treatment of organic wastewater.

The present application relates to the field of environmental protection and sewage treatment technology, and discloses a kind of kitchen slurry anaerobic fermentation combined ozone high-efficiency membrane separation method and system.The method comprises the following steps: (1) the kitchen slurry is subjected to anaerobic fermentation in an anaerobic fermentation unit, and then introduced into a filter press unit for pretreatment to remove filter residue, obtaining a mixture I; (2) the mixture I is subjected to primary ozone oxidation, obtaining a mixture II; (3) the mixture II is introduced into a membrane separation unit for separation and concentration, obtaining clean water and concentrated water; (4) the clean water is subjected to secondary ozone oxidation, obtaining effluent.The method provided by the present application can realize stable operation of a high-efficiency anaerobic reactor by selecting a membrane, controlling the operation mode of a membrane assembly, and coupling with an anaerobic fermentation process and a two-stage ozone oxidation process, effectively removing pollutants while reducing membrane fouling problems and sludge digestion problems.

This invention provides a method and system for reducing the color of coking wastewater concentrate, belonging to the field of wastewater treatment. It aims to solve the problems of incomplete decolorization and easy color reversion that exist when using advanced oxidation methods to decolorize coking wastewater concentrate. The method includes: Step 1, adding persulfate to the wastewater to carry out a first-step reaction, obtaining a primary treated liquid; Step 2, transferring the primary treated liquid to an irradiation device for irradiation treatment, obtaining a secondary treated liquid; Step 3, collecting the ozone generated in the irradiation device and the secondary treated liquid respectively, and introducing the ozone into the secondary treated liquid, and adding ferrous salt, to carry out a final reaction, so that the color of the wastewater is reduced to less than 10 times.