72 results about "Treated water sample" patented technology

The invention relates to a deep treatment method for industrial wastewater through natural pyrite catalyzed H2O2 oxidation. The deep treatment method specifically comprises the following steps: pretreating natural pyrite, adding wastewater into a reactor, adjusting the pH value to be 8-10, adding the pretreated natural pyrite, adding nitrilotriacetic acid, fast stirring, adding a hydrogen peroxide solution, after reaction under stirring, adding a FeCl3 solution to control the mass ratio of pyrite and Fe (III) to be 10:1, adding hydrogen peroxide, continuing the reaction, and standing for precipitation, wherein residual mineral can be recycled; introducing air into supernatant separated through precipitation for secondary oxidation while keeping dissolved oxygen in the water to be above 3ppm, after sufficient aeration, adding polyacrylamide for coagulation treatment, and after standing for precipitation, discharging effluent; carrying out water quality analysis on a treated water sample to assess the treatment effect. By a simple way and various synergistic effects, the deep treatment method provided by the invention changes the generation way of Fenton reaction, significantly increases the reaction reactivity, expands the applicable pH range of the wastewater, improves the utilization efficiency of H2O2, and reduces the cost of technology, thus being an economical and efficient wastewater deep treatment technology.

The invention discloses a flocculating basin with arc blade vortex generators and a flocculating method thereof. A design scheme for solving the problems that a flocculating device cannot be flexibly adjusted, and a flocculating constituent in the flocculating process is prone to being shredded is in urgent need at present. A flocculating basin body is divided into n+1 galleries and one settling pond, and the multiple arc blade vortex generators are arranged in all the galleries except for the gallery close to a settling partition plate. The flocculating method comprises the steps that raw water and a chemical flow into the flocculating basin body after being mixed in a coagulation pipe and passes through the galleries in a turbulence and vortex mode to enter the settling pond through guiding hole sets of the settling partition plate, and the flocculation is constantly accumulated and finally deposited at the bottom of the settling pond; blade angle adjusting devices are constantly adjusted, treated water samples are collected at an outlet to carry out water turbidity measurement, and blade deviation angles matched with the turbulence flow and the flow speed are acquired. The rotating angles of arc blades around a center shaft can be adjusted according to the water flow and the flow speed, and therefore the water flow vortex degree and intensity can be adjusted, and the flocculating process is promoted.

The present invention discloses a high-precision novel water quality detection apparatus, which comprises a water sample collection system, a water treatment system, a water quality detection system, a sewage discharging system, a control and signal processing system and a safety alarm system, wherein a water sample is treated, the treated water sample is discharged into the water quality detection system and is subjected to water quality detection, the water quality detection system and the sewage discharging system are subjected to control and signal treatment by the control and signal processing system, the control and signal processing system is connected to a cloud storage system so as to achieve the cloud sharing and the cloud storage of data, the safety alarm system comprises a communication module, a signal processing module and an alarm module, the cloud storage system comprises a storage module and a networking module, and the control and signal processing system comprises a control module, a signal processing module and a display module. With the high-precision novel water quality detection apparatus of the present invention, the components of the water can be precisely detected, the detection is convenient, the sewage treatment and recycling can be achieved after the detection, the advantages of environmental protection and safety are provided, and the green environmental protection concept is met.

The invention provides a method for directly measuring concentration of DON (Dissolved Organic Nitrogen) in water body based on an electrodialysis pretreatment manner. The method is characterized by comprising the following steps: firstly, quickly and effectively separating DON from DIN (Dissolved Inorganic Nitrogen) by adopting an electrodialysis separation technology, and then directly obtaining the DON concentration through the TDN (Total Dissolved Nitrogen) test. The purpose of the electrodialysis is to remove the DIN and retain the DON; when the content of DON accounts for a major part of the TDN (for example, the proportion of the DIN to the TDN is smaller than 0.1) in a treated water sample, the electrodialysis treatment is stopped, and after a while, the content of the TDN is equal to the content of the DON in the water sample. The method greatly improves the accuracy and precision of the DON measurement in the water sample, solves the problems that the conventional water sample DON measuring method is indirect, and low in accuracy and precision, and consumes time, can be widely applied to the DON detection in various water bodies, and also can be used for measuring the DON in solid particles or atmospheric haze particles capable of being dissolved in water.

The invention discloses a method for reducing the chemical oxygen demand of zeolite molecular sieve production wastewater by one-step illumination technique. The method is characterized in that hydrogen peroxide is added into zeolite molecular sieve production wastewater to generate hydroxyl free radicals with superstrong oxidizing ability under ultraviolet irradiation so as to conduct oxidative degradation on the organic nitrogen-containing compound in the zeolite molecular sieve production wastewater, and the organic nitrogen-containing compound is one or more of a quaternary ammonium salt, quaternary ammonium base, and organic amine. Compared with traditional methods, the method provided by the invention simplifies the treatment process, saves the treatment time, and is easy to operate. For wastewater containing quaternary amine base and organic amine, the method provided by the invention can directly treat the wastewater without adding acid to conduct neutralization, and the treated water sample is close to neutral.

The invention discloses a method for reduction removal of pollutants with zero-valent iron. With the method, the electron selectivity and the utilization rate of the zero-valent iron can be increased, and meanwhile, the reaction activity of the zero-valent iron can be increased. The method is used for improving the electron selectivity and the utilization rate of the zero-valent iron for reduction removal of the pollutants under the coupling effect of ferrite and oxygen. The method specifically comprises steps as follows: (1) the pH value of a to-be-treated water sample is adjusted to 6.0 or below; (2) ferrite is added to the to-be-treated water sample, the amount of the ferrite is increased with the concentration of the pollutants, and the mole ratio of the ferrite to the pollutants is controlled to range from 0.3 to 1.8; (3) the pretreated water sample enters a reactor containing the zero-valent iron to react with the zero-valent iron, and the reactor is in the aerobic state; (4) then water treated in the reactor enters sedimentation equipment for sedimentation. The step (1) and the step (2) can be conducted in a jet mixer, a rotational flow mixer, a pipeline mixer or other completely mixing equipment. The ferrite includes ferrous chloride, ferrous sulfate or other soluble ferrite.

The invention relates to a method for removing ronidazole in water. The method comprises the following steps: pre-treating a water sample to improve an illuminating effect of ultraviolet light to the water sample; carrying out photo-catalytic oxidation on the pre-treated water sample, so that RNZ (Ronidazole) in water is effectively degraded. The method is a photo-catalytic oxidation technology, namely an ultraviolet/chlorine combined process. A certain amount of chlorine is added into water and meanwhile certain chlorine strength is controlled for ultraviolet radiation. The device for realizing the method comprises a reactor, a quartz tube, an ultraviolet lamp, a stirrer, a power supply connecting wire, a water pump and a constant-temperature water bath box, wherein the quartz tube is arranged in the center of the reactor, the stirrer is arranged in the quartz tube, and the ultraviolet lamp is arranged in the reactor and is connected with a power supply through the power supply connecting wire. The reaction time is controlled within 15 minutes to realize the purpose of efficiently removing ronidazole in water. The removal rate can reach over 95%. The method provides a technical support for improving a water purification process of a water plant. The method and device provided by the invention are suitable for treatment of antibiotic wastewater and source water.

The invention discloses a method for detecting sulfonamide and beta-lactam antibiotics in livestock and poultry breeding wastewater. The method comprises the following steps: sequentially centrifugingand filtering a to-be-detected water sample; adding deionized water into the obtained filtrate for dilution; adding Na2EDTA, adjusting the pH, carrying out solid-phase extraction treatment on the obtained pre-treated water sample, carrying out negative-pressure leaching treatment and normal-pressure elution treatment on a solid-phase extraction column subjected to the solid-phase extraction treatment, collecting eluent, and then carrying out nitrogen blowing and constant volume treatment to obtain an antibiotic solution to be detected; and carrying out antibiotic content detection on the antibiotic solution to be detected by adopting a high performance liquid chromatography-tandem mass spectrometry method. According to the detection method disclosed by the invention, a solid phase extraction-liquid chromatography tandem mass spectrometry method is adopted, and various process conditions and parameters are selected and determined, so that the detection method can be used for rapidly and accurately detecting antibiotics in water and detecting sulfonamide and beta-lactam antibiotics in the livestock and poultry breeding wastewater at the same time.

The invention discloses a gas-driving dispersive liquid-liquid microextraction method. The method comprises specific steps of: preparing a water sample into a sodium bicarbonate solution having a concentration of 2.0-5.0% (w/v); pipetting the treated water sample into a centrifuge tube, and adding an extractant and a dispersant; adding rapidly a foaming agent ascorbic acid into the solution to produce a large amount of bubbles instantly and to drive the extractant to uniformly disperse in the solution; permitting the solution to stand until the bubbles disappear, putting the centrifuge tube in a centrifugal machine to be centrifuged until the extractant is separate with the water sample; and taking 1.00-2.00 [mu]L of the extractant by a microsyringe, and detecting. According to the method, an organic liquid film is formed on the surface of the water sample by adding the extractant having a slightly lighter density than water into the water sample, the large amount of bubbles are produced instantly by a chemical reaction in the water sample, and the extractant is drove to disperse uniformly in the water sample by a method of utilizing gas effervescence in the solution, thereby replacing effectively a manual shaking manner to promote extractant dispersion, and achieving efficient extraction of target molecules in the water sample.

The invention relates to a purification device for PPCPs in a drinking water source. The purification device mainly comprises a water storage tank, a first pretreatment tank, a solid phase extractiondevice, a full-automatic nitrogen blowing device, a reverse extraction tank, a second pretreatment tank, an ultraviolet catalytic oxidation reaction tank, a coagulation flocculation tank and a sedimentation tank which are sequentially connected through a water pump. The purification device further comprises a reagent tank, a control system and an automatic control operation panel. The invention further provides a treatment method for the PPCPS in the drinking water source. The treatment method mainly comprises the steps of pretreatment, solid phase extraction, nitrogen blowing and concentration, reverse extraction, ultraviolet catalytic oxidation, coagulation flocculation, sedimentation and water output. The purification device has the advantages of efficiently concentrating the PPCPs, remarkably reducing the volume of a treated water sample, being mild in reaction, completely degrading the PPCPs in a directional mode, being high in automation degree and the like, and has wide application prospects.

The invention discloses a method for quickly detecting picric acid in water by a liquid chromatography-tandem mass spectrum. The method comprises the following steps of: 1, pretreating the obtained water sample; and 2, analyzing and determining the treated water sample by an ultra performance liquid chromatography-tandem mass spectrum combined technology. The used liquid chromatography instrumentis an Acquity ultra performance liquid chromatography (UPLC) system and the picric acid is separated from the sample by the Acquity UPLC bridged ethylene hybrid (BEH) hydrophilic interaction liquid chromatography (HILIC) chromatographic column. The HILIC is used to keep the picric acid on the chromatographic column, and the picric acid is separated and detected in three minutes. The labeling experiment proves that the recovery rate of a drinking water sample reaches 94 to 105 percent and the recovery rate of a waste water sample reaches 79 to 97 percent in the method, and the requirement of picric acid determination in the water sample can be met. The method for quickly detecting picric acid in water by the liquid chromatography-tandem mass spectrum has the characteristics of high sensitivity, high analysis speed, strong selectivity, low pollution, and the like and is easy to operate.

The invention provides a method for detecting trace estrogen substances in a water environment. The method comprises the following steps: filtering a water sample through a glass fiber membrane to remove insoluble suspended particles, adding EDTA-2Na for dissolving, adding an estrogen internal standard mixed stock solution, and adjusting the pH value; enriching target estrogen by using a treated water sample through solid-phase extraction, leaching a solid-phase extraction column by using a leacheate under negative pressure, eluting a target object by using a certain volume of an elution solvent under normal pressure, collecting the eluate, carrying out nitrogen blowing, and fixing the volume to obtain a to-be-detected estrogen solution; and quantitatively detecting the content of the enriched estrogen substances in the water environment on a high performance liquid chromatography tandem mass spectrometer by adopting an internal standard method. According to the detection method disclosed by the invention, solid-phase extraction is combined with liquid chromatography-tandem mass spectrometry, and solid-phase extraction conditions are optimized, so that the detection method can be used for rapidly, accurately and efficiently detecting the estrogen substances in various water environments such as tap water, surface water and livestock and poultry breeding wastewater, and meanwhile, the estrogen substances can be detected in various water bodies.

The invention discloses electrochemical and film filtration based industrial wastewater efficient treatment equipment. The equipment comprises a wastewater and oil separating treatment set, a wastewater electrolytic treatment set, a wastewater film separating set and a purified water discharging set, wherein the wastewater and oil separating treatment set removes oil in the wastewater through multichannel gathering and static adsorption; the wastewater electrolytic treatment set separates pollutants in the wastewater in a solid state form by applying a low voltage pulse electric flocculation mechanism and generates hydroxyl to decompose and remove organic pollutants by means of electrolysis of water; the wastewater film separating set filters and separates the pollutants in the wastewaterin a solid state form by means of an ultrafiltration film filter and removes residual pollutants in the water by adopting a disc type reverse osmosis separating technology; and the purified water discharging set is used for finally purifying and discharging the treated water. Reuse of reclaimed water after full automatic treatment of the wastewater can be achieved, and meanwhile, the national discharging demand is met. A treated water sample is influenced to a little extent by fluctuation of polluting components of raw material, so that water consumed by an enterprise is also saved while the treatment cost is lowered.

The invention relates to a method for softening a water body and synchronously preparing calcium carbonate whiskers by adopting electrochemistry, the method specifically comprises the following steps: (a) taking a to-be-treated water sample containing calcium salt, magnesium salt and carbonate, adding the to-be-treated water sample into an electrolytic bath, then installing a cathode and an anode into the electrolytic bath, and communicating with an external power supply to form an electrochemical reactor, then carrying out pre-electrolysis; (b) after pre-electrolysis is finished, continuing electrolysis, obtaining crystal whiskers through deposition and growth on the cathode, and completing softening of the to-be-treated water sample. Compared with the prior art, water softening and calcium salt utilization can be achieved at the same time, and obvious economic, social and environmental benefits are achieved.

The invention relates to a method for simultaneously detecting and enriching quinolone antibiotics in drinking water based on an SPE column. The method comprises the following steps: concentrating andenriching a pre-treated water sample by a solid phase extraction column with a reverse phase/ion exchange mixed mode chromatographic packing, analyzing and detecting the concentrated water sample through high performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS), and detecting the concentrations of the quinolone antibiotics in the water sample according to the analytical chromatogram of the sample and the standard working curve of each antibiotic. Compared with the prior art, the method adopting the SPE-HPLC-MS/MS to realize the simultaneous enrichment and detection of trace(tiny) amounts of typical quinolone antibiotics in drinking water has the advantages of reliable detection result precision, low detection limit and small relative standard deviation, and can be effectively applied to the detection and the quantitative analysis of a trace (tiny) amount of quantalone in feces, soil, surface water and drinking water.

The invention discloses a method for simultaneously determining five types of antibiotic residues in a water sample. The method comprises the following steps of carrying out pre-treating on a to-be-detected water sample, carrying out enrichment and purification treatment on the pre-treated water sample, then carrying out concentration treatment on the to-be-detected water sample after enrichment treatment, preparing the concentrated to-be-tested sample into an antibiotic to-be-detected liquid and carrying out machine detection on the antibiotic to-be-detected liquid, and the like. By adoptionof the method simultaneously determining five types of antibiotic residues in the water sample, five types of antibiotic residues in the water sample can be quantitatively analyzed at the same time, the detection efficiency is high, the detection limit and the quantitative limit are relatively low, the sensitivity is high, and residual trace antibiotic species and content in the water sample can be detected. In addition, the method has the advantages of high recovery rate, high repeatability and bright application prospect.

The invention relates to a device for removing disinfection byproducts in water. The device comprises an enhanced coagulation tank, an ultrafiltration membrane component, a nanofiltration membrane component, a pervaporation membrane component and a collection device, wherein a to-be-treated water sample sequentially flows through the enhanced coagulation tank, the ultrafiltration membrane component, the nanofiltration membrane component and the pervaporation membrane component for treatment and then flows to the collection device for collection. In the device for removing disinfection byproducts in water, provided by the invention, the enhanced coagulation tank and a three-level integrated membrane device composed of the ultrafiltration membrane component, the nanofiltration membrane component and the pervaporation membrane component are combined to remove the disinfection byproducts in water; and through organic combination of the devices, the removal rate of the disinfection byproducts exceeds 90%, the disinfection byproducts in water can be effectively reduced, the water quality requirements on safe water are met, and the device is of important significance to purifying the swimming pool water, the drinking water and the like after chlorination disinfection.

The invention relates to a method for removing iopamiol in water through the ultraviolet/chlorine dioxide combined process. The method specifically comprises the following steps that (1), a to-be-treated water sample is pre-treated; (2), a ClO2 solution is added in the water sample obtained after pretreatment in step (1), the pH value is adjusted, a photocatalytic oxidation reaction is conducted through ultraviolet irradiation, iopamidol in the water is removed. Compared with the prior art, the method is combined with the UV/ClO2 combination process, by adjusting the pH of a reaction water body, the content of iopamidol in the water body can be rapidly reduced, the removal effect can reach 99% or above, degradation is thorough, and the degree of mineralization is high, the potential risk that iopamidol existing in drinking water generates I-DBPs in the drinking water can be rapidly lowered, operation is easy, the reaction conditions are easy to control, applied chemical reagents and materials are conventional products for water treatment, other toxic and harmful substances are not introduced, the safety is particularly prominent, and the reaction environment is easy to achieve.

The invention discloses a method for online biological monitoring of water treatment. The method comprises the following steps: A, selecting sampling points between a biological reaction tank and a secondary sedimentation tank, pumping a water sample through a water sampling pump and transporting the water sample to a pretreatment unit with a certain water head; B, pre-treating the collected sample; C, placing the pre-treated water sample on an online biological monitoring device for taking photos; D, pre-treating images generated after taking the photos; E, inputting the images to a deep learning detection algorithm; and F, performing microbiological detection on the collected sample. According to the method provided by the invention, an IT technology, an optical technology and sewage treatment are combined together, and microorganisms in a water body are directly observed and analyzed, so as to judge the rationality of the sewage treatment process and monitor parameters in the sewagetreatment, at the same time, water quality parameters such as BOD, COD and the like are complementary, therefore, the efficiency of sewage treatment is effectively improved and the cost of effluent quality testing is reduced. The method is high in speed and high in accuracy when used for detecting water quality.

The invention relates to a copper complexation reinforced tetracycline pollutant degradation treatment method which comprises the following steps: (1) due to the fact that livestock or aquaculture wastewater simultaneously contains tetracycline and copper ion pollutants and a tetracycline copper complex is inevitably formed, adding a copper ion reagent into a to-be-treated water sample containing tetracycline pollutants to form a tetracycline copper complex, then adding sulfite, and adjusting the pH value to 3-9; and (2) continuously adding ferrous sulfide, and carrying out a mixed reaction so as to complete degradation treatment on the tetracycline-copper complex pollutants. Compared with the prior art, the natural mineral ferrous sulfide is used for activating the by-product sulfite of the desulfurization process to generate active species, the green and environment-friendly concept of treating waste with waste is fully played, and the degradation effect of tetracycline in the ferrous sulfide/sulfite system can be enhanced through copper ions complexed with tetracycline of pollutants.

The invention discloses a method for extracting a benzotriazole compound from water. The method comprises the following steps: pre-treating a water sample, wherein the pH of the water sample is smaller than the pKa value of the benzotriazole compound and the massic volume concentration of the salt is greater than or equal to 10%; transferring the pre-treated water sample to a glass extraction bottle and adding an extraction agent to obtain a mixture; sucking the mixture to a needle cylinder of a glass injector and then pushing a piston of the glass injector to push the mixture in the needle cylinder to the glass extraction bottle; repeating sucking and pushing steps to transfer a target to the extraction agent in an accelerate manner; and then centrifugalizing the mixture to obtain a two-phase solution, wherein an organic phase of the two-phase solution comprises the benzotriazole compound. According to the extraction method disclosed by the invention, use of a dispersant can be avoided, and the method has the advantages of environment friendliness, simple operation, short extraction time, good extraction effect, relatively high enrichment and the like.

The invention belongs to the technical field of environmental protection traceability, and particularly relates to a traceability method and system for underground water pollution caused by sulfonamide antibiotics, and the method comprises the following steps: collecting information of a traceability area, collecting an underground water sample, pre-treating the collected water sample, extracting sulfonamide antibiotics in the pre-treated water sample, and measuring and analyzing the content of the sulfonamide antibiotics, obtaining analysis data; analyzing and predicting the analysis data, determining that the water sample is abnormal if the analysis data is detected to be greater than a preset threshold value, or else, determining that the content of the sulfonamide antibiotics in the underground water sample of the traceability area meets the water quality standard; acquiring information of a traceability area corresponding to the abnormal signal of the water sample, and starting emergency response and then running emergency monitoring; and obtaining pollution source information by calculating an estimated value or probability distribution of a pollution emission parameter in the water sample of the traceability area, and repeating the steps until the traceability search range is narrowed until the pollution source can be found through field investigation. According to the method, the sulfonamide antibiotics in the underground water can be quickly traced.

The invention discloses a UV oxidation method for synchronously removing pollutants and disinfection byproducts. The method comprises the following steps: adjusting the pH value of a to-be-treated water sample to 4-8 by adopting one or more of concentrated sulfuric acid, sodium hydroxide and a phosphate buffer solution; introducing air and/or oxygen into the to-be-treated water sample at the flowrate of 2-60L/min, and fully mixing the water sample, the gas and the oxidant in the reaction container; wherein UV irradiation is carried out on the water sample to be treated, the wavelength of UV ranges from 160 nm to 290 nm, preferably, the wavelength ranges from 185 nm to 254 nm, the irradiation dosage ranges from 15 mJ/cm < 2 > to 600 mJ/cm < 2 >, and the time is 5 min or longer, preferably,5 min to 120 min; and adding a chlorine-containing disinfectant into the to-be-treated water sample, wherein the concentration of chlorine in the chlorine-containing disinfectant is 5-30mg/L. The method provided by the invention not only has a better removal effect and a higher reaction rate on trace pollutants and disinfection by-product precursors, but also has a control effect on carbon-containing disinfection by-products which are difficult to control by a traditional UV/H2O2 oxidation technology.