50results about How to "Optimizing dosage" patented technology

The invention relates to a complex combination alumina-carborundum-(carbon) series amorphous fire proof material, and the formula comprises: 36 to 32 percent of 8-3mm corundum or bauxite, 18 to 26 percent of 3-1mm corundum or bauxite, 10 to 22 percent of 1-0.0088mm corundum or bauxite, 0 to 15 percent of 1-0.088mm carborundum, 0 to 3 percent of 1-0.0088 spherical asphalt, 0 to 20 percent of d90 less than 0.088mm corundum or bauxite, 0 to 20 percent of d90 less than 0.088 carborundum, 0 to 3 percent of d90 less than 0.088mm high-carbon materials, 0 to 5 percent of alpha alumina micro powder, 1 to 8 percent of alumina hydrate, 1 to 6 percent of silicon ash, 0 to 2 percent of calcium aluminate cement, 0.05 to 0.4 percent of plus super-plasticizer (polycarboxylic acids+sulfonated naphthalene formaldehyde polymer+sulfonated melamine polymer), 1 to 6 percent of plus polypropylene acid series latex and 1 to 6 percent of plus water. Compared with low-cement aluminum carborundum carbon material, the material has good anti-corrosion performance. Therefore, the service life of a kilneye of a cement kiln and a main groove slag line of a blast furnace can be prolonged when a product is combined by the complex combination alumina-carborundum-(carbon) series amorphous fire proof material instead of the cement.

The invention discloses a high speed railway bridge bearing anchoring mortar material with is blended from components of, by weight: 37 to 45% of sulphoaluminate cement, 0 to 8% of Portland cement, 0 to 5% of an addition, 45 to 55% of graded river sand, 0.04 to 0.18% of a solidification retarder, 0.05 to 0.12% of an accelerant, 0.15 to 0.4% of a water reducing component, 0.05 to 0.15% of a defrothing component, and 0 to 0.1% of fiber. The material provided by the invention is specially used in anchoring and grouting of high speed railway bridge pot rubber bearings. The material has characteristics of good fluidity, high early strength, good filling properties, no strength reversing in later stage, low cost, convenient application, and the like. The material also can be applied in large equipment installation and pavement rush-repairing.

The invention discloses a preparation method of magnetic graphene oxide and application thereof. The preparation method comprises the following steps: 1 preparing mother liquor; 2 measuring the content of graphene oxide in the mother liquor; 3 obtaining an adsorbing material, namely the magnetic graphene oxide, by utilizing the mother liquor, FeCl[3].6H[2]O, FeSO[4].7H[2]O and stronger ammonia water. The magnetic graphene oxide prepared through the method is used for processing waste water containing methylene blue. According to the method, the graphene oxide is compounded through the improved Hummers method, ferroferric oxide nano-particles are loaded on a graphene oxide layer according to a certain proportion through a coprecipitation method, the obtained magnetic adsorbing material is used for the absorption treatment of a methylene blue solution, the synthetic process is simplified, the oxidation effect is guaranteed, and meanwhile the energy consumption is reduced, the time is saved, and the preparation cost is reduced; the magnetic adsorbing material which is applicable to different magnetic field environments and methylene blue waste water of different types of concentration is obtained, and the material can be recycled repeatedly.

The invention discloses a resourceful treatment method for high-salinity wastewater, comprising the following steps of: removing organic pollutants of organic high-salinity waste water by adopting a catalysis wet-type peroxide oxidation method; and oxidizing the content of total organic carbon (TOC) of the high-salinity wastewater to be below a maximum limit value of salt water which flows into an electrolytic cell of a chloralkali plant, so that the high-salinity waste water subjected to the catalysis wet-type peroxide oxidation treatment can be used as a raw material for producing chlorine and caustic soda in the chloralkali plant, so that resourceful utilization of the high-salinity wastewater can be realized.

The invention relates to a carbon source addition feedforward-feedback control device and method. The device comprises a control device, an oxygen-poor zone, an aerobic zone, a secondary sedimentation tank and an advanced treatment unit, wherein the oxygen-poor zone, the aerobic zone, the secondary sedimentation tank and the advanced treatment unit are sequentially connected. An agent adding pool is connected with carbon source addition points through an agent adding pump. The aerobic zone is provided with an internal reflux pipeline which is connected with the oxygen-poor zone. The secondary sedimentation tank is provided with an external reflux pipeline which is connected with the oxygen-poor zone. The carbon source addition feedforward-feedback control device is characterized in that the carbon source addition points include the addition points arranged in the oxygen-poor zone and the advanced treatment unit respectively, the control device comprises detection instruments, a frequency converter and an industrial personal computer, and the detection instruments include the inlet water volume instrument arranged on the inlet of the oxygen-poor zone, the internal reflux flow instrument arranged on the internal influx pipeline, the external reflux flow instrument arranged on the external reflux pipeline, the nitrate nitrogen instruments which are arranged on the outlet of the oxygen-poor zone and the outlet of the secondary sedimentation pool respectively, and the total outlet water and total nitrogen instrument arranged at the outlet of the advanced treatment unit; the industrial personal computer is internally provided with an agent adding pump addition amount control module, a nitrate nitrogen control module, a feed-forward compensation module and a feedback compensation module. The carbon source addition feedforward-feedback control device and method can be widely applied to the sewage disposal process.

The invention relates to a sewage treatment optimizing operation system and method under a high discharge standard, and belongs to the technical field of sewage treatment. The sewage treatment optimizing operation system comprises a pre-hypoxia tank, an anaerobic tank, a hypoxia tank, an aerobic tank, a selection tank, an oxygen elimination enhancing tank, an endogenous denitrification tank, a post-hypoxia tank, a post-aerobic tank, a secondary sedimentation tank and a deep treatment unit; a sludge backflow system is arranged between the secondary sedimentation tank and the pre-hypoxia tank, the tail end of the aerobic tank is provided with an online ammonia nitrogen instrument, the post-hypoxia tank is provided with a post-hypoxia tank carbon source putting system, and the deep treatmentunit is provided with a chemical phosphorus removal agentia putting system. According to the sewage treatment optimizing operation system, the oxygen elimination enhancing tank is arranged to controlthe carbon source loss of the hypoxia tank and the post-hypoxia tank; by optimizing setting of carbon source putting points, the tank volume utilization rate of the hypoxia tank is increased, and internal carbon sources are sufficiently utilized accordingly; through the arrangement of the endogenous denitrification tank, denitrification enhancing measures of endogenous denitrification are enhanced; meanwhile, by optimizing setting of chemical phosphorus removal agentia putting points, the biological phosphorus removal efficiency is recovered.

The invention belongs to the technical field of adsorbent materials, and particularly relates to a modified attapulgite adsorbent and a preparation method thereof. The preparation method comprises: S1, pretreatment: breaking attapulgite, and grinding to obtain attapulgite powder; S2, acid modification: dispersing the attapulgite powder obtained in the step S1 in a hydrochloric acid solution for 2h at a constant temperature of 20 DEG C, washing with ultrapure water to achieve a neutral state, and carrying out vacuum drying at a temperature of 100-110 DEG C so as to be spare; S3, thermal modification: calcining the acid-modified attapulgite powder obtained in the step S2 for 2 h at a temperature of 550-850 DEG C, naturally cooling, and screening with a 200 mesh sieve so as to be spare; andS4, modification with lanthanum: adding the modified attapulgite powder obtained in the step S3 in a lanthanum nitrate solution at a constant temperature of 20 DEG C, impregnating for 2 h, dispersingfor 2 h, washing with ultrapure water to remove residual lanthanum ions, carrying out vacuum drying at a temperature of 100-110 DEG C, and screening with a 230 mesh sieve. According to the present invention, the modified attapulgite adsorbent can effectively remove phosphorus from wastewater.

The invention discloses a macromolecule water reducing agent for reducing viscosity of clay slurry as well as a preparation method and an application thereof. The water reducing agent comprises a monomer, distilled water, inorganic chain transferring agent and initiator; the weight of the monomer accounts for 25 to 40 percent of the total weight of the monomer and distilled water; the monomer comprises crylic acid and sodium allysulfonate; the weight of crylic acid accounts for 70 to 85 percent of the total weight of the monomer, and the weight of sodium allysulfonate accounts for 13 to 35 percent of the total weight of the monomer. A hydrophilic group of the polymer monomer can be well adsorbed onto the surface of particles, hydrophilic side chains can be better strength in the mortar, the characteristics such as low mixing amount and high water reducing rate can be realized; moreover, the preparation method is simple to operate; the requirement on the device is simple in the production process, no after-treatment is needed, the energy consumption is low, and the environmental pollution is avoided. The dosage in the application process of the clay is small, the water reducing effect is good, the mobility of the clay slurry can be remarkably improved, and the viscosity of the clay slurry can be reduced; and the phenomenon that the clay slurry is settled in the addition range of the dosage of the additive can be avoided.

The activity excitant for flyash as cementing material may be used to make the flyash adding amount as high as 70 % without affecting the early strength of cement and concrete. The activity excitant consists of iron powder in 20-50 wt%, calcium oxide in 20-40 wt%, densifying agent 0.05-0.5 wt% and flyash 10-40 wt%, and is added into cement and concrete in the amount of 1-3 % of cementing material. The production process includes air drying and sieving iron powder, milling calcium oxide to obtain calcium oxide powder, and mixing the said material in the said ratio.

The invention belongs to the technical field of sewage treatment and discloses a method and a device for online optimized control of the operation of a two-sludge denitrifying dephosphatation process. The method disclosed by the invention comprises the following steps of: detecting change rates of ORP (Oxidation Reduction Potential), DO (Dissolved Oxygen) and pH in a biochemical reaction process at each stage as well as the quantitative relationship among the change rates and anaerobic phosphate release, anoxic denitrification phosphorus-uptake and aerobic nitrification reaction; determining an ORP fuzzy control range for feeding a carbon source at the anaerobic stage, a pH fuzzy control range of the aeration time at the aerobic nitrification stage and a pH fuzzy control range of anoxic stirring time according to a detection result; carrying out calculation on controlled quantity deviation and fuzzification and comparing the calculation with a traditional fuzzy control rule; carrying out a fuzzy control reasoning by adopting a Mamdani fuzzy calculation method to obtain a fuzzy control variable; controlling the feeding amount of the carbon sources according to the ORP dynamic change rule at the anaerobic stage and dynamically calculating the concentration of inflow ammonia nitrogen according to the DO concentration in the aerobic nitrification process, thereby controlling the aerobic nitrification aeration time; meanwhile, dynamically controlling the hydraulic power residence time at each stage by combining pH and ORP curve types at anaerobic/anoxic stages.

A method for scale inhibition of blasting condensation high hardness circulating water in a coking plant is realized by adding a composite scale inhibitor to the composite scale inhibitor, continuously adding the composite scale inhibitor after a ton of water is supplemented, and performing the operation repeatedly, wherein the composite scale inhibitor comprises modified humic acid, lignosulfonate, polymaleic anhydride, amino trimethylene phosphonic acid and deionized water. The modified humic acid adopted in the method has chelation to metal ions, and has dispersing power to calcium carbonate and calcium phosphate; after the composite scale inhibitor is added into water, loose and non-wall-mounted soft scale is formed; meanwhile, the synergistic effect and the threshold effect between the modified humic acid and molecules of all auxiliary component are excellent, so that the consumption of the composite scale inhibitor is reduced; the composite scale inhibitor for a blasting condensation high hardness circulating water system in the coking plant also has the functions of sterilization and algae killing, and can inhibit the generation of adherence algae, so that a procedure of regular adding of an algaecide and a bactericide in the circulating water is eliminated.

The invention discloses a water treatment device and method capable of improving the ozone utilization rate. The device is characterized in that: a water inlet tank is connected with a water inlet ofan ozone catalytic oxidation reactor through a pipeline provided with a water inlet pump; the ozone catalytic oxidation reactor is internally provided with catalyst filler; a gas distribution pipe isarranged at the bottom part in the ozone catalytic oxidation reactor below the catalyst filler; the gas distribution pipe is connected with an ozone generator through a gas inlet pipe; a water outletof the ozone catalytic oxidation reactor is connected with an output water collection tank through a pipeline; the output water collection tank is connected with a reflux port of the ozone catalytic oxidation reactor through a reflux pipeline provided with a reflux pump; an exhaust opening of the ozone catalytic oxidation reactor is connected with a waste gas collection tank. According to the device disclosed by the invention, water flow in the ozone catalytic oxidation reactor is adjusted to wave flow type flowing, so that a flowing path of water flow in the reactor is greatly increased, so that ozone, a catalyst and sewage are in more sufficient contact; output water is refluxed to be subjected to circulating treatment, so that the utilization rate of the ozone is effectively improved.

The invention discloses ultrahigh-strength basalt fiber composite concrete and a preparation method thereof. The ultrahigh-strength basalt fiber composite concrete comprises cement, fine aggregate, coarse aggregate, fly ash, a silica powder, an expansion agent, a defoamer, water, a water reducer and fiber as raw materials according to a mixture ratio of 482.6 to 831 to 1046 to 111.6 to 86 to 39 to1.1 to 100 to 19.7 to 9.5, and the unit of the mixture ratio is kg/m<3>; the fiber comprises basalt fiber and carbon fiber according to a volume ratio of 0.4 to 1. The ultrahigh-strength basalt fibercomposite concrete has the advantages of capability of significantly improving the bonding performance between sectional steel and concrete, effective exertion of the mechanical properties of the steel and the concrete and great improvement on the bearing capacity and the durability of an SRC (Steel Reinforced Concrete) structure.

The invention discloses a polycarboxylate superplasticizer and a preparation method thereof. The polycarboxylate superplasticizer is prepared from raw materials: by weight, 340-360 parts of methoxypolyethylene glycol, 20-40 parts of methacrylic acid, 2-10 parts of hydroxyalkyl acrylic ester, 2-6 parts of catalyst, 2-6 parts of polymerization inhibitor, 2-6 parts of oxidizing agent, 1-5 parts of reducing agent, 1-5 parts of tartaric acid and 640 parts of water. The preparation method of the polycarboxylate superplasticizer is carried out at the temperature ranging from 5 DEG C to 40 DEG C. According to the preparation method, the problem of low efficiency at temperature during use of one type of reducing agent can be avoided, dropwise adding time can be shortened, production cycle can be shortened, energy consumption can be lowered, and production cost can be decreased.