10 results about "Particulate organic matter" patented technology

The utility model relates to soil detection technical field. The utility model discloses a kind of farmland soil conductivity real-time detection probe of anti-interference, including protective shell, the side wall of protective shell is slidably connected with cover plate, the inside of protective shell is slidably connected with conductivity detector, the bottom of conductivity detector is fixedly connected with detection probe, the detection probe is set by setting pollution cleaning component, pull rod is pulled upward, piston plate is driven along the inner wall of protective shell to slide upward, while piston plate drives conductivity detector and detection probe gradually retract to inside protective shell, effectively protect the integrity of detection probe, air in protective shell can be extruded to gas guide pipe by air guide component at this time, subsequently sprayed on the surface of detection probe, to improve the impact force and cleaning effect of airflow on the surface of detection probe impurity, more effectively remove soil particles, organic matter and other impurities attached on probe.

The invention provides a method and device for determining a background value of chemical oxygen demand of a water environment, and the method comprises the following steps: measuring the chemical oxygen demand of a water sample, and obtaining a dissolved organic matter DOM sample and a particulate organic matter POM sample for the water sample and each end member sample; determining a plurality of first end member samples of dissolved organic matters DOM and particulate organic matters POM which influence the water sample; calculating a chemical oxygen demand background value of each sampling point based on a third influence coefficient and a fourth influence coefficient corresponding to a natural source end member sample in the first end member sample; determining the weight of each sampling point based on the human activity intensity within a second preset range around each sampling point; and based on the chemical oxygen demand background value and the weight of each sampling point, determining the chemical oxygen demand background value of the regional and / or watershed water environment. According to the method, the degree of influence of human activities on each sampling point is quantified, and a more accurate and reliable upscaling background value derivation technology is provided.

The present application belongs to the technical field of sewage treatment, and discloses a method for simultaneously producing medium-chain fatty acids and hydrogen by enhancing sludge anaerobic fermentation. The sludge is concentrated and mixed with alkaline biochar, and then potassium ferrate is added for reaction to obtain pretreated sludge. After adjusting the pH, the sludge is mixed with an electron donor and inoculated sludge for anaerobic fermentation to obtain a fermentation liquor rich in medium-chain fatty acids and hydrogen. The alkaline biochar-potassium ferrate coupling system is used to break down the extracellular polymeric substance and cell wall of the sludge, drive the dissolution of particulate organic matter, and inhibit the activity of methanogens. Fe2O3 derived from potassium ferrate forms an iron-carbon composite with biochar in situ, and by enhancing the efficiency of electron transfer and enzyme activity, the acidification process of organic matter and the carbon chain extension reaction are promoted, forming a composite technology with three functions of "pretreatment-electron regulation-methane inhibition", realizing the simultaneous recovery of medium-chain fatty acids and hydrogen, and improving the sludge treatment efficiency.

The application belongs to the technical field of silicon wafer cleaning equipment, and particularly relates to a silicon wafer pretreatment cleaning machine, which comprises a cleaning tank, a placing support and a plurality of silicon wafer bodies on the placing support, a turnover mechanism is arranged on the cleaning tank, the turnover mechanism can drive the cleaning structure to translate and rotate, and the cleaning structure comprises a plurality of driving devices and a flushing device. The application realizes simultaneous cleaning of silicon wafers with equal interval distribution, utilizes two kinds of reverse flow vortexes in sequence, enhances shear force through dynamic change of fluid direction, and produces an alternating shear force through switching of water flow direction, so that a two-way stripping effect is generated on pollutants such as particles, organic matters or metal ions on the surface of the silicon wafer. For a silicon wafer with a groove, the tangential force generated by the vortex can destroy the tension balance on the surface of the groove, and switching of the flow direction can make the water flow reciprocate in the groove, so that impurities in the deep part of the groove are pushed out more effectively.

The invention discloses a method and a system for testing, evaluating and optimizing peak pressure of an urban sewage treatment plant based on a sewage treatment model. The method comprises the following steps: S1, collecting basic data of the sewage treatment plant; s2, determining sewage water quality characterization component parameters, including measuring SCOD, VFA, BOD5 and the like, calculating an inert soluble organic matter SI, a soluble extremely-easily-degradable organic matter SA, a fermentable and easily-biodegradable organic matter SF, a slow-speed degradable matrix XS and an inert granular organic matter XI, and calculating component proportion parameters; s3, based on the basic data and the component parameters, establishing and correcting a sewage plant process mathematical model; and S4, on the basis of the correction model, in combination with a field pressure test, simulating lifting hydraulic power or biological load, evaluating the maximum treatment capacity of the sewage plant on the premise of ensuring that the effluent reaches the standard, identifying a process bottleneck, and proposing an optimization suggestion. Through model simulation and field verification, the peak treatment potential of the sewage plant is scientifically quantified, and accurate decision support is provided for reducing overflow pollution.

This invention relates to the field of soil science technology, specifically a method for calculating the relative spatial distribution of particulate organic matter and pore structure in CT images, comprising the following steps: S1: performing CT scanning on a soil sample and preprocessing the image to obtain a preprocessed CT image; S2: identifying and segmenting particulate organic matter and pore structure from the preprocessed CT image based on machine learning; S3: calculating the morphological characteristics of the pore structure; S4: calculating the morphological characteristics of the particulate organic matter; S5: analyzing the relative spatial distribution of the particulate organic matter and the pore structure, including calculating the distance distribution from the particulate organic matter to the surface of the pore structure. This invention not only calculates the morphological parameters of the pore structure and organic matter, but also calculates the distribution of particulate organic matter relative to the pore structure, as well as the content of particulate organic matter connected to the pores, enabling a direct characterization of the interaction mechanism between the two.

This invention discloses a method for determining the stability of organic carbon in reservoir sediments based on the coupling relationship between microbial community structure and mineral-organic carbon. Existing technologies often rely on single physicochemical indicators, neglecting differences in geological background and the driving role of microorganisms, leading to biased carbon sink assessments. This invention separates sediments into particulate organic matter and mineral-bound organic matter components, and measures exchangeable cations (Ca). 2+ Mg 2+ Fe 3+ Al 3+ The microbial-mineral coupling coefficient (MMCC) was constructed by analyzing the content and abundance of microbial phyla. Based on the MMCC value and microbial community distribution characteristics, carbon sinks were classified into highly stable karst types (MMCC>1.5), low-stability non-karst types (MMCC<0.5), and transitional types. This method quantifies the difference between the "calcium bridge / carbonate co-precipitation" and "iron-aluminum adsorption" mechanisms for the first time, with significantly higher discrimination accuracy than traditional methods. It is applicable to the carbon sink potential assessment of water bodies with different geological backgrounds, providing a scientific basis for the implementation of the "dual carbon" strategy.

The present application relates to sewage treatment and resource technology field, particularly to a kind of for sewage organic carbon concentration recovery and side stream anaerobic fermentation acid production functional material and its preparation method and application.It includes: wood fiber class biomass is mixed with zinc chloride grinding, firing, and biochar is obtained;Biochar is mixed with tannic acid solution, stirring, and after removing liquid, tannic acid loaded biochar is obtained;Then mixed with iron ion, manganese ion, and after stirring, remove liquid and dry to obtain dry material;The dry material is pyrolyzed, and the functional material is obtained.The present application utilizes the high adsorption of biochar to colloidal and low molecular weight dissolved organic matter in sewage and the capture advantage of flocculant to particulate organic matter to achieve high capture effect on sewage organic matter.Biochar has magnetism, and combined with flocculant to form magnetic floc to achieve the purpose of magnetic separation, to quickly settle.The captured sludge is used for hydrolysis acidification to produce VFAs.

The invention provides a system for collecting, analyzing and processing organic matter components in atmospheric gaseous and particulate matters. The invention further provides application of the system for collecting, analyzing and processing the organic matter components in the atmospheric gaseous and particulate matter in detection of weak-polarity and / or polar organic matter components in the atmospheric gaseous and particulate matter. The invention further provides an orbital hydrazine mass spectrum rapid analysis method for organic matter components in atmospheric gaseous and granular substances. The invention further provides a method for detecting the organic sulfate components in the atmospheric gaseous and granular substances. According to the gas-gas state and particle state organic matter orbital hydrazine mass spectrum rapid analysis method and the processing system provided by the invention, an instrument is simple in structure, offline is not needed, only one-step pretreatment is needed, pretreatment loss and pollution are avoided, and determination can be carried out after spectrogram intelligent analysis on the instrument; the method is suitable for rapid quantitative analysis and non-targeted screening of organic matters in atmospheric gaseous and granular samples.

The present application provides a kind of method for reducing septic tank harmful gas emission in train toilet waste water treatment process, belong to sewage treatment technical field, including septic tank, septic tank is communicated with short path nitrification treatment device, short path nitrification treatment device is communicated with water storage tank, water storage tank backflow septic tank.The septic tank is used for the separation of granular organic matter in toilet waste water;Short path nitrification denitrification device is used to treat septic tank effluent and convert it into nitrification effluent;Water storage tank is used to store nitrification effluent and backflow to septic tank, utilize the high concentration nitrite nitrogen contained in nitrification effluent to realize the inhibition of harmful gas emission in septic tank.The treatment method of the present application realizes the emission reduction control of harmful gas in toilet waste water treatment process, reduces its threat to environment and residents, while improving the treatment efficiency of toilet waste water.