11 results about "Trihalomethane" patented technology

This invention relates to the field of water treatment technology and discloses a method and system for COD removal from nanofiltration concentrate. The method includes: acquiring full-band UV-Vis absorption spectral data, inorganic anion concentration data, and reactor geometric parameters of the nanofiltration concentrate; subtracting inorganic salt interference from the spectrum and identifying organic components through Gaussian deconvolution peak decomposition; generating a multi-level oxidation parameter sequence based on a comprehensive halogenation risk index assessed by halogenation reaction activity evaluation and a risk-aware oxidation mode decision model; calculating focused ultrasonic control parameters on the electrode surface through acoustic field finite element simulation; performing staged electrocatalytic oxidation treatment, simultaneously monitoring zoned current density and targeted cleaning of local contaminants, and monitoring trihalomethane concentration online and dynamically adjusting the anode potential. This invention solves the problems of organic matter identification bias, chlorination byproduct formation, and electrode contamination in the treatment of high-salt, high-chlorine nanofiltration concentrate.

The invention discloses a making technology of a braised sauced product for reducing hypertension, hyperglycemia and hyperlipidemia, relates to the technical field of food processing, in particular to the making technology of the braised sauced product for reducing hypertension, hyperlipidemia and hyperglycemia, a three-step core technology of mother juice, mother materials and mother paste is adopted, and all the raw materials are selected from medicinal and edible herbs specified by the national health and health committee. The mother juice is used for soaking food materials so as to remove fishy smell, remove dirt and preliminarily permeate; marinating food materials by matching the master batch with soup-stock and yellow wine; the mother paste is added during marinating to synergistically exert the effect of reducing hypertension, hyperglycemia and hyperlipidemia. According to the technology, the traditional diet culture and the concept of homology of medicine and food are combined, the technology is suitable for making meat and pickled vegetables, and a folk handmade delicious food processing method with flavor and health functions is provided.

This invention discloses a method for detecting disinfection byproducts in drinking water. By combining gas chromatography-triple quadrupole dynamic multiple reaction monitoring, ion pair information and standard curves containing disinfection byproduct standards are established. The extracted sample solution is tested under the same test conditions, enabling simultaneous extraction and quantitative and qualitative analysis of 34 disinfection byproducts in the sample. The byproducts detected simultaneously include five categories of substances: trihalomethanes, halonitromethanes, haloaldehydes, haloketones, and haloacetonitrs. This greatly increases the variety of disinfection byproducts that can be detected simultaneously and improves the detection efficiency.

The application discloses a kettle with purification function and a use method thereof. The kettle comprises a heating kettle and a filter kettle communicated with the heating kettle through a water inlet pipe. A main heater is arranged at the bottom of the heating kettle. A porous boiling stone is arranged at the bottom of the heating kettle. A steam outlet is arranged at the top of the heating kettle, which is used for increasing bubbles and improving the removal rate of residual chlorine. The main heater is connected with the output end of a controller. The input end of the controller is connected with a timer and a temperature sensor for collecting the water temperature in the heating kettle. The controller is used for controlling the main heater to continuously heat for a set time after boiling, and then controlling the main heater to work intermittently, so that the water temperature in the heating kettle is kept in a set temperature range. The kettle with purification function and the use method thereof are used for reacting with natural organic matters in raw water, removing chlorine and removing carcinogenic substances (trihalomethane and trihalomethane) generated in the water purification process, which is more beneficial to the health of human bodies.

The present disclosure provides a method for reducing methane emissions from a ruminant comprising combining (1) fungal strain, biomass from the fungal strain, and / or a culture supernatant from the fungal strain, and / or a combination thereof, wherein the fungal strain comprises a vanadium-dependent haloperoxidase (VHPO), and (2) one or more compounds of Formula I, Formula II, Formula III, and / or Formula IV. The disclosure also provides a method for reducing methane emissions from a ruminant comprising administering to the ruminant a composition comprising a fungal strain, biomass from the fungal strain, a culture supernatant from the fungal strain, or a combination thereof.

The invention discloses a water disinfection optimization method driven by machine learning, which realizes collaborative optimization of chlorine adding amount and residual chlorine and accurate control of generation amount of trihalomethane (THM4) by constructing a prediction model and an optimization algorithm. The method comprises the following steps: firstly, collecting a real water sample, carrying out a simulation pipe network tail end disinfection experiment, and establishing a water quality-disinfection by-product (DBPs) standard database; on the basis, a chlorine consumption prediction model based on machine learning and a THM4 generation quantity prediction model are developed. And then designing a chlorination amount optimization algorithm, constructing a multi-objective optimization function fusing target residual chlorine and THM4 concentration, setting a residual chlorine control range, and determining the optimal chlorination amount by adopting a strategy of combining global search with local refinement. And finally, integrating the prediction model with an optimization algorithm, and obtaining the chlorine adding amount which simultaneously meets the target residual chlorine and enables the THM4 generation amount to be the lowest through iterative calculation, so that the intelligent and efficient optimization of the drinking water disinfection process is realized.

The invention discloses a method for monitoring the concentration of a water body disinfection by-product DBPs based on electron donating ability, and belongs to the technical field of environmental engineering.The method comprises the steps that S1, a water body sample is collected, first pretreatment is conducted, and the EDC value is measured through an ABTS + free radical reduction decolorization method; s2, carrying out second pretreatment on the water body sample subjected to the first pretreatment, and measuring the concentrations of trihalomethane and haloacetic acid in the water body sample by utilizing a gas chromatographic method; s3, by taking the EDC value as an independent variable and the trihalomethane concentration and the haloacetic acid concentration as dependent variables, establishing a first prediction model for predicting the trihalomethane concentration based on the EDC value and a second prediction model for predicting the haloacetic acid concentration based on the EDC value; and S4, predicting the concentration of trihalomethane and the concentration of haloacetic acid by using the first prediction model and the second prediction model based on the EDC value of the target to-be-detected water body sample. The method solves the problems that a traditional DBPs detection method is long in time consumption and complex in operation.

The application relates to the technical field of water treatment, and discloses a COD removal method and system for nanofiltration concentrated water, which comprises the following steps: collecting full-waveband ultraviolet-to-visible absorption spectrum data, inorganic anion concentration data and reactor geometric parameters of the nanofiltration concentrated water; removing the interference spectrum of inorganic salts and identifying organic components through Gaussian deconvolution peak decomposition; evaluating a comprehensive halogenation risk index based on halogenation reaction activity, generating a multi-stage oxidation parameter sequence by using a risk perception oxidation mode decision model; calculating electrode surface focused ultrasonic control parameters through sound field finite element simulation; performing a staged electrocatalytic oxidation treatment, simultaneously performing partition current density monitoring and local pollution targeted cleaning, online monitoring trihalomethane concentration and dynamically adjusting anode potential. The application solves the problems of organic component identification deviation, chlorinated byproduct generation and electrode pollution in the treatment of high-salt and high-chlorine nanofiltration concentrated water.

Described herein relates to an optimum, low maintenance and low-cost filtration media which may be implemented near a source water location as a pretreatment to remove tannic acid and / or humic acid (color) from dissolved natural organic matter (NOM) (i.e., tannic acid, humic acid) to impede the prompt production of disinfection by-products collectively termed trihalomethanes in drinking water treatment processes. In an embodiment, the filtration media may comprise a composition having a ratio of at least 83% sand, at most 5% clay, at most 6% ZVI and at most 6% perlite by percent volume.

The application patent belongs to the technical field of environmental monitoring, and specifically discloses a solid-phase microextraction probe material, a preparation method thereof and application of the solid-phase microextraction probe material in preparation of a solid-phase microextraction probe coating for detecting disinfection by-products and glucocorticoids. The solid-phase microextraction probe material provided by the scheme has a simple preparation process and a lower cost than the price of existing commercial solid-phase microextraction probes. By introducing carboxyl functional groups, the adsorption sites are enriched, and the pore elasticity is increased, so that the adsorption capacity for polar trihalomethane disinfection by-products and glucocorticoids is significantly improved, and rapid, efficient and sensitive sample pretreatment is achieved.

The present disclosure provides a method for producing trihalomethane, comprising: adding at least one vanadium-dependent haloperoxidase (VHPO) enzyme to a solution in an reactor; adding one or more compounds of Formula I, Formula II, Formula III, and / or Formula IV to the solution; adding hydrogen peroxide to the solution; and separating one or more trihalomethane produced by the at least one VHPO enzyme from the solution. The present disclosure also provides a device for producing trihalomethane that implements the method for producing trihalomethane.