67results about How to "Reduce the difficulty of governance" patented technology

The invention relates to a method for purifying a penicillin production waste liquid and recycling sodium sulfate. The method comprises the following steps: firstly, primarily evaporating the penicillin production waste liquid; concentrating a raw material liquid in desorbing residual solvents in the waste liquid; adding activated carbon into the primarily concentrated raw material liquid, wherein the liquid phase obtained from separation is a destaining solution of which a part of organisms are removed; continuously evaporating the destaining solution to obtain a concentrated destaining solution; adding alkali into the concentrated destaining solution, reacting to remove the impurities, filtering and precipitating, wherein an obtained liquid is an alkali treated liquid; adding a dilution agent for dilution crystallization into the alkali treated liquid, performing solid-liquid separation, and recrystalizing the solid, thereby obtaining high-purity sodium sulfate crystal; feeding a liquid into a solvent recycling tower for recycling the dilution agent, and feeding a tower kettle liquid to a biochemical pool for treatment. Compared with the prior art, organisms such as protein and pigment in the penicillin production waste liquid are reduced, at the same time sodium sulfate is recycled, then circulation application of sodium sulfate and water is achieved, the treatment difficulty and cost of the penicillin production waste liquid are remarkably alleviated and lowered, and great economic and environment benefits are achieved.

The invention discloses a method for treating mercury-containing wastewater by using modified blue-green algae. The method is characterized by comprising the following steps: (1) performing acidification modification treatment on blue-green algae, thus obtaining modified blue-green algae; (2) treating the wastewater by employing the modified blue-green algae; (3) detecting the supernatant fluid of the wastewater, and discharging the wastewater after qualification; and (4) recovering the blue-green algae, namely filtering the used modified blue-green algae, desorbing the blue-green algae in a desorbing agent for 1 hour, and filtering and refrigerating the modified blue-green algae. The modified blue-green algae raw materials used in the method come from eutrophic lakes and are easily obtained, mass propagation or dead algae in the lakes are reasonably utilized, the eutrophication phenomena can be reduced, and the treatment difficulty of the lake eutrophication is lightened; and moreover, the method for adsorbing and removing the mercury-containing industrial wastewater by utilizing the modified blue-green algae is simple in process and convenient to use.

The invention relates to the field of nonferrous metal smelting and particularly relates to a process for recovering lead, zinc and cadmium in soot on a recovery section in the process of treating waste acid generated in lead smelting. The soot of a reduction furnace is subjected to a leaching reaction by using arsenic sulfide removal waste acid in the lead smelting industry to generate lead slag to be recovered, and then, the leaching agent is continued to be neutralized by using sodium sulphide and sodium hydroxide to generate high-grade zinc and cadmium slag to be recovered. According to the invention, the waste acid is used for separating the lead, zinc and cadmium in the soot of the reduction furnace for lead smelting, so that the operation cost is low; the problem of production operation damage caused by circulated accumulation of the zinc and cadmium in lead smelting is solved and the pressure of a lead smelting system is relieved under the condition of low cost; and the lead slag which is low in arsenic content and suitable for being treated by a lead system and the zinc and cadmium slag which is suitable for being treated by a zinc system can be generated, and meanwhile, the waste acid is also treated, so that not only is the treatment cost of the waste acid reduced, but also the treatment difficulty is lowered.

The production process of extra low-viscosity refined cotton includes the following steps: (1) selecting material; (2) cooking; (3) washing pulp; (4) pretreatment for bleaching; (5) bleaching; and (6) rolling, dewatering and drying to obtain finished product. It uses cotton linters whose maturity is greater than or equal to 80%, appearance does not impurity or other fibre and fibre longth is 8-10mm as raw material, its cooking step adopts sectional cooking, and the bleaching step adopts sectional bleaching.

The process of utilizing saponin producing effluent includes the following steps: adding assistant to high concentration effluent and merging partial eluate to obtain mixed acid solution, and grinding together with phosphate ore in a ball mill to obtain slurry; flowing the slurry through one storing tank and one high level tank to one reducing chamber and reacting with concentrated sulfuric acid solution to prepare calcium superphosphate. The process of eliminating pollution of saponin producing effluent has low cost.

A chromium pollution soil combined remediation method includes the steps that the concentration and the content of chromium and the optimum moisture content in chromium pollution soil are determined;a calcium polysulfide solution is selected, the chromium pollution soil and the calcium polysulfide solution are mixed and stirred according to a molar ratio of 2:1-3:1, and mixed material is added with water to maintain the optimum moisture content until the chromium of the chromium pollution soil is reduced from sexavalence to trivalence; coal ash is selected to compose zeolite, the amount of admixture is 10%-15%, the zeolite and the chromium pollution soil are mixed and stirred, mixed material is added with water to maintain the optimum moisture content until the steady absorption of the chromium of the chromium pollution soil is completed; and cement is selected, the amount of admixture is 5%-10% or 15%-20%, the cement is mixed and stirred with the chromium pollution soil, mixed material is added with water to maintain the optimum moisture content, and curing period is maintained for 7-28 days until the solidification of the chromium pollution soil is completed. The chromium pollution soil combined remediation method has the characteristics of good remediation effect, good long-term stability of the remediation effect, no secondary pollution, lower remediation cost and remediation mode reclamation.

The invention provides a method and device for changing tables in a database. The method comprises the steps: obtaining a change instruction for a target table in the database, wherein the change instruction comprises corresponding change information; adopting a preset DDL grammar rule, and generating a DDL script based on the target table in the database and the corresponding change information;and automatically calling and executing the DDL script so as to change the target table in the database. According to the method, the change information of the table can be converted into the DDL script, so that the table is changed, and then the table change accuracy is improved, and the table change operation is simple, and the usability is high, and the generalizability is high; and the DDL script is automatically called and executed, so that missing submission of a change file of the table can be avoided, and the consistency of each environment table is further ensured, and the data governance and maintenance difficulty is reduced.

The invention specifically relates to a continuous anodic electrolytic cell for preparing a high performance aluminum alloy, which solves the problems that the existing aluminum electrolytic cells are complex in operation and hard to control. A continuous anodic device is composed of an anodic body and an anodic box body, wherein a metal frame is arranged on the upper portion of the box body, a sealing shield plate frame is arranged on the lower portion of the anodic box body, a bearing hook is arranged between a sublayer current conducing rod and a bearing hook connecting piece arranged on the metal frame, one or two of a padding frame and a crust breaking and blanking exhaust mechanism are arranged between the metal frame and the anodic body, padding in the padding frame is prepared by scandium, titanium, manganese, copper, zinc, strontium, silicon, nickel, chromium, magnesium and rare earth which have a positive reduction potential higher than that of aluminum, or prepared by hydroxide, oxide, fluoride, chloride, sulfide, phosphate, sulphate and carbonate of the scandium, the titanium, the manganese, the copper, the zinc, the strontium, the silicon, the nickel, the chromium, the magnesium and the rare earth, an exhaust port is arranged on a metal platform. The continuous anodic electrolytic cell for preparing the high performance aluminum alloy has the advantages of simple production technology, short process, small controlling difficulty, small energy consumption, small pollution, low cost and high quality.

The invention relates to a method to process waste water to produce ordinary calcium superphosphate in dry method by ginger. The method includes following steps: adopting hydrochloric acid or sulfuric acid hydrolyzed material to take filtering or centrifugal separation to gain eluate low concentrated waste water and fluosilicic acid mixture acid solution; adding antifoaming agent into mixture acid solution and mixing phosphate rock powder to form mixture; adding concentrated oil of vitriol and mixture acid solution in the formation room to gain vitriol acid solution to make ordinary calcium superphosphate. The invention decreases the process difficult and lowers cost. For the place that both has ordinary superphosphate producing company and saponin producing company, the invention also could solve saponin waste water pollution problem, and the cost is only 1/5-1/10 of the existing method.

The invention relates to a method of recovering oxalic acid from supercidin cleaning liquor. It comprises following steps: filtering supercidin cleaning liquor and getting clarified solution, feeding clarified solution to absorption column filled with weak basic ion exchange resin which is treated with normal method, the oxalic acid is adsorbed, the liquor is discharged to subsequent process: adding ammonial solution to adjust supercidin isoelectric point for separation by crystallization, ading ammonial solution to said ion exchange resin column to remove oxalic acid and getting ammonium oxalate, recovering oxalic acid. The invention is characterized by high oxalic acid recovery rate of 89- 93.6%, reduced ammonia solution consumption by 80%, increased supercidin recovery rate of 95%, simple process, reusable resin and low cost.

The invention discloses a yarn-dyed fabric yarn dyeing waste water treatment and online recycling method and device. The device mainly comprises a self-cleaning filter, an adjusting pond, a heterogeneous Fenton oxidation pond, an air flotation pond, a double membrane system and an MVR system which are connected in sequence. The method comprises the steps that yarn dyeing waste water is independently treated, anhydrous sodium sulfate in the yarn dyeing waste water is subjected to resource recycling, the content of refractory organics and salt in the comprehensive waste water can be effectively reduced, and the utilization rate of raw materials is increased. The experiment result shows that the whole device can recycle 90% or above of the yarn dyeing waste water, the salt in the waste water can be effectively removed, the salt removing rate is larger than 99%, distillate generated by an RO water producing and MVR system can be recycled to be used for various production links, the new water use amount is replaced, the generation amount of pollutants is controlled from the source, and the idea of cleaner production is fully embodied.

The invention belongs to the technical field of spinning dyeing and finishing, and particularly relates to a little-water medium dyeing method for a cellulosic fiber cheese. By conducting the four processes of pretreatment, dyeing, after treatment and dyeing medium separation and recovery on the cheese, little-water medium dyeing is realized for the cellulosic fiber cheese. According to the dyeingmethod, under a dyeing condition of low salt and alkali and little water, dyeing is conducted, the usage amount of water, anhydrous sodium sulphate and sodium carbonate is reduced by 60-85% comparedwith common dyeing, and meanwhile the utilization rate of dye can be increased by 5-10%. By the adoption of the dyeing method, dyeing is conducted, all fastnesses of yarn can reach the third-fourth level, compared with common water bath dyeing, the dyed medium can be rapidly recovered and recycled, the recovery rate of the medium is up to 95%, and the problems that during traditional active dye water bath dyeing, the amount of consumed water and the quantity of discharged pollutants are high, and the content of salt in wastewater is high are effectively solved.

The invention relates to a method for achieving sand stabilization of a high-cold region through carex brunnescens. The method comprises the steps that in a first stage, first carex brunnescens living sand barrier queues are planted with the spacing of 10-20 m in the lower middle portions of the two sides of a moving longitudinal dune in the direction perpendicular to prevailing wind; in a second stage, after the longitudinal dune is leveled off through wind erosion, second carex brunnescens living sand barrier queues are planted on a large scale with the spacing of 0.5-1.0 m on a wind erosion flat ground located in the middle, living sand barriers at the left and right sides are integrally connected through the second carex brunnescens living sand barrier queues, and then stable sand stabilization surfaces can be formed. According to the method, a technique of utilizing carex brunnescens for sand stabilization is provided for achieving ecological management and sand stabilization practice of desertified grassland in the high-cold region, the cost for sand prevention and control is reduced, the sand stabilization period is shortened, the sand control effect is improved, a solid foundation is laid for better utilizing resource plants carex brunnescens in the future, and a new research prospect is opened up for ecological restoration of the desertified grassland in the high-cold region.

The invention belongs to the technical field of textile dyeing and finishing and particularly relates to a production method of acrylate monomer modified cellulose fiber fabric. The production method includes: stirring and evenly mixing an emulsifier and deionized water, and sequentially adding acrylate monomers and an initiator to perform emulsification reaction to prepare a modified acrylate emulsion; soaking cellulose fiber fabric in the modified acrylate emulsion system for 1-15 minutes, using a padder to control fabric wet pick up at 65-110%, sealing the cellulose fiber fabric after padding, and placing into a drying oven to perform constant-temperature piling; subjecting the modified cellulose fiber fabric to soaping and drying. The production method has the advantages that the modification process of the cellulose fiber fabric is environmentally friendly and controllable, and the modified cellulose fiber fabric is soft in touch.

The invention relates to a production method of an antioxidizer 300 and belongs to the technical field of manufacturing of an alkylphenol sulfide antioxidizer. The production method comprises the following steps that 1, saturated aliphatic hydrocarbon solvent oil with high boiling range is used as a solvent, 6-tert-butyl-m-cresol and sulfur chloride conduct a sulpho reaction, and 4,4'-sulpho bis(6-tert-butyl-m-cresol) is generated; 2, after the sulpho reaction is completed, low-molecular-weight alcohol is added; 3, the temperature is increased, hydrogen chloride and alcohol are generated through evaporation and then cooled to the normal temperature, a weak base aqueous solution is added, the pH value of the material is adjusted to be neutral, and through filtering, a coarse product is obtained. The production method is scientific, reasonable, simple and easy to implement, the small amount of residual hydrogen chloride which needs to be neutralized is only produced in the production process, and the produced antioxidizer 300 coarse product has few impurities and is high in purity.

The invention discloses a membrane treatment device for underground wastewater. The membrane treatment device comprises a precision filter system, a booster pump system, a membrane treatment main device system, a dosing system, an instrument analysis and monitoring system, and an automatic control system 6, wherein the underground wastewater sequentially flows from the precision filter system and the booster pump system to the membrane treatment main device system through a pipeline; the dosing system is used for adding chemicals on an underground wastewater inlet; instrument monitoring points of the instrument analysis and monitoring system are respectively arranged on pipeline measuring points of the precision filter system and the booster pump system; the automatic control system is connected to an input of the instrument analysis and monitoring system, and an output of the instrument analysis and monitoring system is connected to corresponding control ends of the membrane treatment main device and the dosing system; the instrument analysis and monitoring system and the automatic control system are arranged on a same platform or in a plant, and are integrally connected through various corrosion resistant pipelines and cables; through a valve and a water pump of the membrane treatment main device system, operation under different pressures and flows is realized, so that underground water polluted in various ways is treated.

The invention discloses a monoazo lake pigment. The structural general formula of the monoazo lake pigment is one of the structures described in the description: M is one of Ca, Ba and Sr; R is H, OH,NO2, Cl, Br or C1 to C4 alkyl, and n is a positive integer from 1 to 3; and Ar is described in the description. According to the preparation method of the monoazo lake pigment, sodium chloride or sodium hydrogen sulfate/sodium sulfate can be prevented from being generated in the process of preparing the aromatic primary amine diazonium salt. Meanwhile, in the coupling reaction process, alkali containing a sodium element is not adopted, generation of inorganic sodium salt can be avoided in the manufacturing process of the monoazo lake pigment, and conditions are provided for clean treatment and comprehensive utilization of coupling reaction liquid.

The invention discloses a method for treating papermaking wastewater. The method comprises the steps of discharging the papermaking wastewater into a pollution discharge pond for settling, and then discharging the papermaking wastewater into a regulation pond; adding a reducing agent namely sodium sulfite, settling, and then discharging an upper aqueous solution into a mechanical speed-up clarifying pond with a stirring machine; adding flocculating agents namely basic aluminum chloride and polyacrylamide to separate colloidal substances in the solution, and filtering through a pressure filter to generate fore treatment water; discharging the fore treatment water into a reaction tank, and generating fore pretreatment water through a multi-medium filter; treating the fore pretreatment water to obtain reclaimed water; treating the reclaimed water to produce water according with recycling production. By adopting the method provided by the invention, the problem for recycling of the wastewater generated during papermaking is solved, water resources are saved, and the production cost is reduced.