5 results about "Ammonia levels" patented technology

This invention discloses a method and system for simulating and alleviating stress in pigs based on multi-dimensional environmental parameters. The method includes: constructing a digital twin environment of the pigsty, simulating and updating the effective ambient temperature, conductive ground temperature, and ammonia concentration in real time; constructing multiple pig agents and calculating core body temperature changes based on the physiological energy equation; using an improved Boids swarm algorithm to drive emergent group behavior of the pig agents, where the cohesion weight is dynamically adjusted according to environmental parameters: nonlinear enhancement at low temperatures to simulate swarming, decaying to a negative value at high temperatures to simulate dispersion, and applying negative feedback decay and superimposing random noise to simulate social disturbance when ammonia levels exceed the standard; updating environmental parameters in response to user environmental control operations, and repeating the above steps to form a closed loop until the stress is relieved. This invention solves the problem of existing simulation systems lacking closed-loop dynamic simulation and can be used for livestock teaching and research training.

This invention provides a solid dosage product in the form of ammonia gas (NH3) bioadsorbent granules and a method for making it by utilizing the organic acid content of starfruit (Averrhoa bilimbi) extract. This bioadsorbent granule consists of a natural polymer carrier matrix component in the form of a combination of sodium alginate and gelatin composites with a weight ratio of 1:1, and an active substance in the form of starfruit extract of 15% w / w to the total weight of the matrix base. The manufacturing method is carried out through an ionotropic gelation technique by dissolving the polymer matrix, mixing the starfruit extract homogeneously using a magnetic stirrer at a speed of 500 rpm and a temperature of 40oC, then dripping the mixture into a 0.1 M calcium chloride (CaCl2) hardener solution to form a porous solid phase cross-link.Based on FTIR analysis, these granules have active sites in the form of functional groups –OH, C=O, and COO- that capture ammonia gas molecules through acid-base interactions into a stable form of ammonium ions (NH4+) and are strengthened by hydrogen bonds. The application of these granules is able to reduce ammonia gas emissions in open poultry farm waste areas with a reduction efficiency of up to 91.3% or until the ammonia level reaches 0 ppm.

This invention discloses a start-up and shutdown process for a mother liquor distillation tower to reduce ammonia consumption, relating to the field of ammonia-soda alkali production technology. The waste supernatant used in this invention is the supernatant of distillation waste liquid, with characteristic indicators similar to the distillation waste liquid: temperature 70-80℃, ammonia content of approximately 70 mg / L. Replacing the relatively low-temperature circulating water in the original start-up and shutdown process with this waste supernatant allows for the addition of a larger amount of waste supernatant while using the same amount of steam. This solves the problem of high ammonia levels in the waste liquid due to gas-liquid imbalance caused by small influent flow during the initial start-up and shutdown phases. Furthermore, the ammonia content in the waste supernatant itself reduces ammonia loss during start-up and shutdown. Using this start-up and shutdown process for distillation tower switching operations, the operation is stable. The ammonia content in the start-up waste liquid and the boiling water after shutdown is reduced to an average of approximately 100 mg / L. Statistical analysis shows that using this process for distillation tower switching reduces ammonia loss to approximately 0.5 t per cycle.

The invention relates to the field of aquaculture detection, in particular to a rapid determination method for fish blood ammonia nitrogen concentration in a high saline-alkaline environment, which comprises the following steps: diluting fresh fish blood with a phosphate buffer solution (PBS); a proper amount of the mixed sample is taken and dropwise added to a color development area of a test strip matched with a Pocketm BA blood ammonia analyzer to obtain readings within an effective measurement range, key parameters of a derivation formula are obtained through a blood ammonia concentration fitting curve measured by different dilution gradients, and the blood ammonia concentration of the original blood is calculated through the formula. PBS is adopted as a fish blood dilution system for the first time, and the effective detection range of an instrument is expanded on the premise that the blood ammonia level is not obviously changed. The method does not need centrifugation, standing and other measurement steps of a traditional blood ammonia kit, has the advantages of few steps, short time consumption and good result stability, and is suitable for rapid and accurate measurement of the blood ammonia concentration of fishes on a culture site.

This invention belongs to the field of intelligent control technology for aquaculture environments, specifically involving an adaptive control method based on multi-parameter linkage of temperature, humidity, and ammonia concentration. It collects real-time data on temperature, humidity, and ammonia concentration in the poultry house; constructs an ammonia release kinetic model using a variant of the Clausius-Clapeyron equation to achieve multi-dimensional parameter nonlinear decoupling preprocessing; introduces a multi-objective optimization strategy based on dynamic weight allocation according to the laying hen's growth cycle to define a composite environmental comfort index; executes variable frequency ventilation logic based on a decoupling matrix to calculate the minimum ventilation volume required for ammonia levels to reach standards and heat balance, activating an adaptive heat compensation mode when parameters conflict; and achieves precise linkage adjustment of environmental parameters through PLC-driven collaborative operation of fans, heaters, regulating valves, and other actuators. It possesses advantages such as thorough parameter decoupling, high control precision, strong adaptability, low operating energy consumption, and system stability and reliability, significantly improving the comfort and production efficiency of laying hen farming environments.