8results about How to "Control pH" patented technology

The invention discloses a precipitation-supported coated slow-release carbon-based iron fertilizer and a preparation method thereof.The preparation method specifically comprises the steps that a biological crustacean heavy metal adsorbent is soaked in a ferrous sulfate solution and then soaked in a calcium hydroxide solution again after low-temperature drying, finally, dried particles are granulated and subjected to coating treatment, and the coated slow-release carbon-based iron fertilizer is obtained. The coated slow-release iron fertilizer is loaded in a precipitation mode, a mixture of precipitated ferric hydroxide and ferrous hydroxide is uniformly dispersed and attached to the interiors of pore channels of the porous adsorbent, and the precipitated ferric hydroxide and the ferrous hydroxide are wrapped by a byproduct calcium sulfate in the porous adsorbent, so that long-acting slow release of iron ions can be realized; the rice cadmium arsenic antagonistic iron fertilizer has the advantages that the rice cadmium arsenic antagonistic effect can be achieved, the oxygen content of soil can be reduced, fine quantitative use of the coated iron fertilizer in the seedling raising period is matched, iron ion antagonism and a precipitation type adsorption load mode are carried out in the whole rice growth process, the iron ion release period is greatly prolonged, and the iron fertilizer has the excellent rice cadmium arsenic antagonism effect and has the excellent application prospect.

The present invention provides a device and method for mineralizing desalinated seawater, belonging to the technical field of desalination water production. The device of the present invention comprises a concentrated brine device 100, a bipolar membrane device 200 and a mineralization device 300 connected in sequence; wherein the concentrated brine device 100 comprises a sodium sulfate concentrated solution tank 101. The present invention prepares desalinated water into a sodium sulfate solution, and there is no risk of scaling and clogging during bipolar membrane electrodialysis, thereby ensuring the safe operation of the bipolar membrane device 200, and the corrosiveness of sulfate to the pipe network is reduced compared to chloride ions. The mineralization device 300 of the present invention comprises a dilute acid tank 301, which can control the pH value of the acid solution before mineralization; the dilute sulfuric acid solution enters the mineralization tower 302, which can effectively convert the acidity of the solution into alkalinity and increase the hardness; the alkali produced by the bipolar membrane alkali chamber 201 enters the mineralized water mixing tank 303, which can adjust the pH value of the water produced by the mineralization tower, so that the mineralized water produced by the desalinated seawater meets the drinking standard.

This utility model relates to a gradient acidification precipitation separation device for rhamnolipids. The acid precipitation tower includes multiple acid precipitation tanks and a top cover. The top of each acid precipitation tank is open, and the bottom of the tank is closed and equipped with a feed outlet pipe. An electrically controlled valve is installed on the feed outlet pipe. An adjustment inlet pipe, an electric heater, and a pH meter are provided on the side wall of each acid precipitation tank. The multiple acid precipitation tanks are arranged and fixedly connected from top to bottom. The top cover is fixed to the top opening of the uppermost acid precipitation tank and has a mother liquor inlet pipe. The feed outlet pipe of the lowermost acid precipitation tank is connected to a delivery pump, and the output end of the delivery pump is connected to the feed pipe of a hydrocyclone separator. This utility model allows for multi-gradient acidification precipitation from top to bottom using multiple acid precipitation tanks, making it easier for personnel to control the pH value of the acidification, enabling the rhamnolipids to precipitate in stages, improving the stability of the acid precipitation operation. The entire process can achieve multi-gradient acid precipitation separation in a single operation, greatly improving the efficiency of acid precipitation separation.

The utility model provides a copper wire drawing device for solder strip processing, which belongs to the technical field of solder strips, and comprises a workbench, the workbench is provided with a pulley tower, a wire drawing die and a guide wheel, the pulley tower is provided with a copper wire, the copper wire passes through the pulley tower, the wire drawing die and the guide wheel, the workbench is fixedly connected with a water tank, and the water tank is fixedly connected with the wire drawing die. The water tank is located at the lower end of the caster tower, a liquid spraying mechanism is arranged in the water tank, a uniform mixing mechanism is arranged on the liquid spraying mechanism, and a rotating mechanism is arranged on the uniform mixing mechanism. The copper wire drawing device for welding strip machining solves the problems that in the copper wire drawing machining process of an existing copper wire drawing device for welding strip machining, the pH value of cooling liquid is inconvenient to control, the device is prone to being corroded due to the fact that the alkalinity of the cooling liquid is too high, the copper wire drawing efficiency is reduced, the quality of welding strip products is improved, and practicability is greatly reduced.

This invention provides a method and apparatus for alkaline sterilization of fermentation sample liquid, applied to sterilization equipment. The sterilization equipment includes: a sterilization tank, a pH measuring device, a stirring device, and an alkaline input device. The stirring device and the pH measuring device are assembled in the sterilization tank. The method includes: controlling the alkaline input device to input alkaline solution into the sterilization tank in batches; controlling the stirring device to stir the liquid in the sterilization tank and measuring the pH of the liquid in the sterilization tank using the pH measuring device; when the pH measured by the pH measuring device exceeds a first preset threshold for a third preset time, controlling the alkaline input device to stop inputting alkaline solution, controlling the stirring device to stop stirring, and discharging the liquid from the sterilization tank.

The utility model discloses a taxus chinensis mimicry seedling raising device, which belongs to the technical field of shrub seedling raising and comprises an ecological shed, first ventilation openings are formed in two sides of the top of the ecological shed, light transmitting openings are formed in the side surface of the ecological shed, and movable frames are movably arranged on two sides of the top of an inner cavity of the ecological shed. A worm gear is driven by a worm to rotate, then the worm gear rotates the movable cylinder and a movable shaft respectively, a movable frame is moved through a connecting rod, a light transmitting opening is shielded through the movable frame, and taxus chinensis seedlings planted in the ecological shed are prevented from being irradiated by too much sunlight. Meanwhile, under the condition of shading, outside air circulates with air in the ecological shed through the first ventilation opening movable frame and the second ventilation opening, the characteristic that taxus chinensis loves shade is created, meanwhile, the ecological shed is filled with ecological soil, the acid-base property of the ecological soil is conveniently controlled, and rapid development of taxus chinensis seedlings is guaranteed.

The invention relates to a kaolin viscosity concentration detection system and method, and belongs to the technical field of intelligent control, the kaolin viscosity concentration detection system comprises: a kaolin stirring device for stirring kaolin ore pulp to be detected, a pH regulator, a dispersant and water; the pH adjusting and detecting device is used for detecting the real-time pH of the ore pulp and controlling the adding amount of a pH adjusting agent according to the real-time pH, so that the real-time pH of the kaolin ore pulp to be detected is within a preset range; the ore pulp viscosity adjusting device is used for detecting the real-time viscosity of the to-be-detected kaolin ore pulp and controlling the adding amount of a dispersing agent according to the real-time viscosity so that the real-time viscosity of the to-be-detected kaolin ore pulp can be within a preset viscosity range; and the viscosity concentration detection device is used for detecting the viscosity concentration of the kaolin ore pulp to be detected. According to the invention, the workload of manual detection of the viscosity concentration of kaolin is reduced, and the accuracy of detection of the viscosity concentration of kaolin is improved.

The invention discloses a preparation and mechanical property evolution research method of a carbon fiber coated BFRP (Boron Fiber Reinforce Plastic) rib, which mainly comprises the following steps of: preparing a hybrid fiber reinforced composite material rib (C / BFRP rib) from E51 epoxy resin with the volume fraction of 35%, carbon fiber with the fiber volume fraction of 65% and basalt fiber, coating the BFRP with the carbon fiber with the volume fraction of 20%, and coating the BFRP with the basalt fiber with the carbon fiber with the volume fraction of 20%; and finally, the C / BFRP rib is soaked in an alkaline solution (artificial preparation). The method is novel and reasonable in design, simple in test mode, low in operation difficulty and capable of effectively achieving test expectation. According to the research method, the alkaline solution is manually prepared, and the pH value of the solution can be effectively controlled, so that the mechanical property evolution law of the C / BFRP rib in the alkaline environment is researched, the test accuracy can be effectively ensured, the test error is reduced, and the application research of the BFRP rib in seawater and sea sand concrete members is supplemented.