60results about How to "Control PH value" patented technology

The invention relates to a production method for electrolytic manganese dioxide. The method comprises the following steps of: A. preparing a mixed liquid of crude manganese sulfate and slurry; B. neutralizing the mixed liquid to remove iron; C. carrying out three-time deep purification on the crude manganese sulfate solution including first purification to remove heavy metals, second purification to remove trace element molybdenum and third purification to remove calcium sulfate and magnesium sulfate; D. electrolyzing; E. rinsing including six steps of washing acid with hot water, rinsing with a weak base, rinsing with a strong base, washing base with hot water, backwashing with a diluted acid and rinsing with hot water; F. milling; and G. mixing to obtain an electrolytic manganese dioxide product. According to the invention, low-grade manganese oxide ore is used as a main raw material to prepare a manganese sulfate solution, the manganese sulfate solution is subjected to deep purification treatment to obtain a high-purity electrolyte, high-performance electrolytic manganese dioxide special for mercury-free alkaline cells and automobile power cells can be respectively produced under different electrolysis conditions, and the obtained electrolytic manganese dioxide product has low impurity content and high quality.

The invention discloses koala flock and a method for manufacturing the same. The koala flock is manufactured by taking 56 to 83dtex Shaoguang flat cross section fibers or semi-Shaoguang flat cross section fibers as koala flock face fibers, and 56 to 76dtex terylene FDY as bottom fibers, whereinthe 56 to 83dtex Shaoguang flat cross section fiber or semi-Shaoguang flat cross section fiber is 30 to 85 portions, and the 56 to 76dtex terylene FDY is 15 to 50 portions. The method comprises production processes of material preparation, weaving, thermal shaping, dyeing, treatment after dyeing, dewatering, colored cloth shaping, front face gigging, finished cloth shaping, combing, scalding, clipping and the like, and the flat fibers are used to replace the conventional circular fiber, so that the simulated koala flock with unique style is produced. The height of the koala flock is between 0.5 and 7mm, and the koala flock touches soft and smooth, and can be widely used in the production of flock toys, indoor flock slippers, blankets, knitting flock and the like, and can fully meet market demands.

A method of preparing large scale nano zinc dioxide directional array belongs to the technical field of preparation of nano material directional arrays. The technology subsequently includes the following procedures: the silver nitrate and hexamethylenetetramine are diluted into water as a reacting solution, and the pH value of the solution can be regulated by adding alkaline substances; a cleaned basal is provided; a layer of zinc oxide film is deposited on the surface of the basal, or the zinc salt solution well prepared is evenly applied on the surface of the basal and sintered; the treated basal is put into the reacting solution and the temperature is preserved for a period of time; the basal is taken out, cleaned and dried, and the nano zinc dioxide array is obtained. The invention has advantages that high orientation and high purity nano zinc dioxide arrays can be rapidly prepared on a large area, the shape and appearance can be controlled, the technology is simple and the cost is low.

The invention discloses an iron oxide yellow viscosity reduction method. The method comprise the steps of: adding water into industrial-grade iron oxide yellow filter cakes to pulp and disperse, adding the iron oxide yellow and the water into a reaction barrel to form a10-14% pulp, controlling the temperature to be 70-85 DEG C, then adding an alkaline liquor to control the PH value of the pulp to be 9.0-9.5, and stirring for 3.5-4 hours at high speed. The method is simple and convenient, the iron oxide yellow can be quickly reduced without metal ions or oxides addition, and the iron oxide yellow viscosity can be reduced by 30-34KU.

The invention provides a finished product ammonium nitrate aqueous solution pH value controlling method comprising the steps that: temperature and pressure of ammonium nitrate aqueous solution in a storage tank are adjusted; compressed air stirring is carried out; self circulation mixing is carried out by using a circulation conveyor pump; and acid liquid or alkali liquid is added according to the calculation of pH value, such that pH value is adjusted. The invention also provides a controlling device comprising the storage tank. An air distributor is horizontally arranged in the middle in the storage tank. The air distributor is connected with an air compressor arranged outside the storage tank through a first pipe. An acid/alkali tank used for adjusting the pH value is connected in the first pipe. The circulation conveyor pump is connected at an outlet end on the bottom of the storage tank. The outlet end of the circulation conveyor pump communicates with the upper end of the storage tank through a second pipe. The outlet end of the second pipe is positioned at the middle-upper part of the storage tank. With the method and the device provided by the invention, ammonium nitrate aqueous solution pH value can be precisely and rapidly controlled, such that application requirement can be satisfied, and safety during the application process can be ensured.

Provided is a factory-like recirculating aquaculture system for Hucho taimen, pertaining to the technical field of aquaculture. The key points of the system are described in that outlet ends of aquaculture ponds communicate with a sedimentation pond through pipelines; the sedimentation pond is located on the side of the aquaculture ponds; a microfiltration machine pond is arranged on the side of the aquaculture pond; additionally, an outlet end of the sedimentation pond communicates with an inlet end of the microfiltration machine pond; the side of the microfiltration machine pond is equippedwith a water return pond; aquaculture water at an outlet end of the microfiltration machine pond and an inlet end of the water return pond as well as in the water return pond enter a floating ball-type biological filter through a pipeline and a water pump; an outlet of the floating ball-type biological filter communicates with a trickling filter through a pipeline and a water pump; the trickling filter is located above an oxygenating tank; the oxygenating tank is disposed on the side of the water return pond; the interior of the oxygenating tank is equipped with an ultraviolet radiation disinfection device; the ultraviolet radiation disinfection device communicates with the oxygenating tank; water in the oxygenating tank communicates with the aquaculture ponds through pipelines. The factory-like recirculating aquaculture system for Hucho taimen is used for factory-like aquaculture of Hucho taimen.

The invention relates to a factory-like circulating water breeding method for hucho taimen, and belongs to the technical field of aquaculture. The method is characterized in that a hucho taimen circulating water breeding system is connected with a hucho taimen juvenile fish breeding system, juvenile fishes are subjected to tameness and cultivation and parallel screening in sequence, fish fry of different sizes are put into multiple breeding ponds respectively, water drained from the breeding ponds passes through a settling pond and a micro filter tank, and then residual feed and fecal suspensions are filtered and removed; detection is conducted by means of a PH online monitoring system, and the PH value of breeding water is adjusted; the breeding water enters a floating type biofilter through a water pump to remove organic matter such as ammonia nitrogen, nitrate and nitrite; harmful gas such as CO2 is removed in a trickling filter; pure oxygen is increased in an oxygen increasing groove; water obtained after oxygen increasing is subjected to ultraviolet ray disinfection; finally, the breeding water automatically flows into the breeding ponds through an oxygen increasing high-levelwater tank, and the whole hucho taimen circulating water breeding process is completed. The method is used for factory-like hucho taimen breeding.

The invention discloses sodium dichloroisocyanurate powder comprising the following raw materials in percentage by total weight: 18-22 percent of sodium dichloroisocyanurate, 0.9-1.1 percent of sodium tripolyphosphate, 1.5-2 percent of sodium silicate and the balance of auxiliary materials. In the product, the sodium tripolyphosphate is added as a pH buffering agent to effectively control the pH value of the product and enable the main component of the sodium dichloroisocyanurate powder to act under the optimal acid condition, thereby achieving the best effect for killing bacteria; meanwhile, an assistant of the sodium silicate is added so as to improve the stability of the product, prolong the validity period and the action period, and maintain the curative effect to be longer.

An active bed anaerobic fermentation reactor can be used for biogas production. The reactor includes a tank body, a gas collecting hood, a water outlet pipe and a water inlet pipe. The gas collecting hood is arranged on the upper part of the tank body, the porous baffle is arranged under the gas collecting hood, the upper and lower movable beds are arranged under the baffle, and the upper movable bed is provided with a lifting device. An air bag is arranged under the lower movable bed, and a side door is arranged at the lower part of the tank body. When working, use a loader to load fermented materials such as straw into the tank from the side door, filling the space between the baffle and the lower movable bed. Inject biogas slurry to submerge the lower opening of the gas collecting hood for anaerobic fermentation. As the biogas is discharged, the volume of the fermented material is continuously reduced, and the air bag is inflated in time to keep the liquid level from falling. After the gas production is over, the liquid is drained first and then the slag is discharged. The reactor uses less water, directly reuses sewage, zero discharge, efficient and convenient loading and unloading, and less investment in equipment.

The invention discloses a simulated reaction method for producing modified rice starch with high degree of substitution by a wet method. The method comprises the following procedures: taking rice starch as a raw material, preparing the starch into starch milk and respectively adding the starch milk to a simulated reactor and a big reaction kettle proportionally; controlling the temperature and reaction time by the big reaction kettle according to instant feedback data of the simulated reactor, and adding a reaction reagent and pH regulating reagent according to feedback instructions. The method is characterized by instantly instructing the big reaction kettle to add according to the given adding amount and adding speed of the pH regulating reagent after computer processing of instant reaction parameters obtained by the simulated reactor, effectively controlling pH value of the reaction system so as to enhance the degree of substitution. The method has the advantages of reducing production cost, helping expand application of the modified rice starch to various fields, enhance grades of food, cosmetics, medicines and textile products, and reduce product cost.

The invention relates to the technical field of desulfurization wastewater pretreatment, and discloses a wastewater treatment device, which comprises a configuration system, a storage system, a firstconveying system, a neutralization system, a second conveying system and a control system, and is characterized in that the control system is electrically connected with a first liquid level meter, aconveying pump, a dosing pump and a PH detector; the invention also discloses a control method for the wastewater treatment system, which comprises the following steps: acquiring the pH value in the neutralization tank, comparing the pH value with a preset pH value, and controlling the frequency of the dosing pump according to the pH value comparison result, thereby controlling the amount of limeemulsion added into the neutralization tank by the chemical storage tank; and obtaining liquid level information of the medicine storage box, and controlling the opening and closing of the conveying pump according to the liquid level information. According to the device and the control method, the structure is simple, the operation is easy, the lime emulsion preparation precision and the neutralization tank pH value regulation precision are improved, the labor intensity of personnel is reduced, and meanwhile, the safe and stable operation of a desulfurization wastewater pretreatment system isimproved.

The invention discloses a preparation method of a high-strength concrete accelerator, which relates to a preparation method of a concrete admixture, in particular to the preparation method of the high-strength concrete accelerator. The method comprises the following steps of taking aluminum sulfate as a base stock of an alkali-free accelerator, and on the basis, adding adjuvants such as sodium fluoride, sodium silicate, xylene, naphthalenesulfonic acid-formaldehyde condensate, triethanolamine, calcium formate, hydroxyethyl carboxymethyl cellulose so as to play a part in increasing concrete strength, accelerating reaction rate and the like. When reaction is performed to a certain extent, phosphoric acid and methacrylic acid are added finally, an added acid solution plays a certain assistantpart to effectively adjust the pH value of a reaction system, so that a final product can effectively play a part in quick setting while not corroding steel materials in a concrete system to influence the strength of concrete in later stage. The preparation method is simple and good in effect.

The invention provides a quality control system of a storage tank ammonium nitrate water solution, which comprises a storage tank, wherein the upper part of the storage tank is provided with a filter; the filter is communicated with the top end of the storage tank through a pipeline; the inside of the storage tank is respectively provided with an air distributor and a heating tube; the air distributor is connected with an air compressor arranged outside the storage tank through a first pipeline; an outlet end positioned at the bottom end of the storage tank is connected with a circulating delivery pump; an outlet end of the circulating delivery pump is communicated with the upper end of the storage tank through a second pipeline; and the top end of the storage tank is connected with an acid-alkali tank for regulating the PH value. The control system can control the concentration, PH value, combustion residue and solution temperature index of the ammonium nitrate water solution, so that the ammonium nitrate water solution can comprehensively satisfy the standard requirements or demands of customers, and ensure the use safety.

The invention relates to an intelligent management system of domestic wastewater. The intelligent management system comprises a wastewater settling tank, a wastewater purification tank, a clean water tank and a control system, wherein the wastewater settling tank is used for collecting the domestic wastewater and is connected with the wastewater purification tank through an immersible pump; aluminum polychlorid and a liquid level sensor are placed in the wastewater settling tank; the wastewater purification tank is used for treating harmful substances in the wastewater and is connected with the clean water tank through the immersible pump; microorganisms, zeolite and a liquid level sensor are fed into the wastewater purification tank; the clean water tank is used for storing a water source and conveying the water source to a water utilization place; a water conveying pump, a backflow pump, a liquid level sensor and a PH detector are arranged in the clean water tank; the backflow pump is connected with the clean water tank and the wastewater purification tank; the water conveying pump is connected with a pipeline of the water utilization place; the control system is connected with the liquid level sensors, the PH detector, the immersible pump, the backflow pump, the water conveying pump and an electromagnetic valve; the electromagnetic valve is arranged on the pipeline of the water utilization place. The intelligent management system is mainly used for simple treatment of the wastewater, thus realizing recycling.

The invention belongs to the field of medicine, and discloses a wound flushing fluid. 1L of the wound flushing fluid comprises 0.5-10 g of EDTA, 1-4 g of hydrogen peroxide, 0.5-2 g of iodophor, 1.5-8 g of disodium hydrogen phosphate, 0.5-10 g of potassium dihydrogen phosphate and hypertonic saline water, wherein the concentration of the hypertonic saline water is 95-100 mmol/L, the PH value of the wound flushing fluid is 7.4, and the wound flushing fluid is sterilized. According to the invention, the high-permeability saline water added with EDTA (Ethylene Diamine Tetraacetic Acid) is used as the wound flushing fluid, so that the bacterium removal capability can be improved, and the wound infection occurrence rate is reduced; therefore, the problem of insufficient degerming capacity of normal saline in the prior art is solved; besides, the EDTA is widely applied to clinical treatment and has good safety to human bodies, is low in price and convenient to popularize and use.

The invention provides electrode slurry for a plasma display. The electrode slurry comprises an organic matter component, silver powder and low melting-point glass powder, wherein the organic matter component comprises a copolymer skeleton of methyl methacrylate and methacrylic acid; part of carboxyl of the copolymer skeleton have a structure of unsaturated double bond by introducing propylen acyloxy; and all the rest of carboxyl of the copolymer skeleton is neutralized by aqua ammonia. The invention also provides application of the electrode slurry in manufacturing the plasma display. The electrode slurry formed by the invention can be stably stored for a long time and can develop by using pure water.

The invention discloses a river sewage high-efficiency treatment and purification device for irrigation. The device comprises a water collecting tank, the lower portion of the water collecting tank isprovided with a baffle plate, the upper portion of the baffle plate is in clamping connection with a polypropylene filter bag, the water collecting tank is connected with a water pump through a waterinlet pipe, the water pump is connected to a sterilization chamber through a water outlet pipe, the inner wall of the sterilization chamber is provided with an ultraviolet lamp, the lower portion ofthe sterilization chamber is provided with an activated carbon filter screen, a reaction chamber is formed in the lower portion of the activated carbon filter screen, one side of the reaction chamberis provided with a medicine feeding tube, the side of the medicine feeding tube is provided with blades, the blades are rotatably connected with a motor through a rotating shaft, a reverse osmosis membrane is mounted on one side of the reaction chamber, and a water purification tank is disposed on one side of the reverse osmosis membrane. The device achieves the treatment of river sewage simply and efficiently, prevents waste of water resources, fully and effectively achieves purification treatment of the river sewage, and provides convenience for irrigation of the river sewage.