822 results about "Industrial water" patented technology

The invention relates to the technical field of industrial water system safety monitoring, in particular to an intelligent source tracing method for a process medium leaked in circulating water, which comprises the following steps of: acquiring multi-dimensional operating parameters such as conductivity, pH value, turbidity, dissolved oxygen, temperature, pressure and characteristic ion concentration; a standardized water quality parameter matrix is generated after space-time alignment and wavelet noise reduction; the method comprises the following steps: extracting an abnormal fluctuation signal by using a leakage feature recognition model based on transfer learning, simulating a diffusion process through a three-dimensional leakage diffusion model, realizing leakage source positioning by combining reverse particle tracking and kernel density estimation, associating a high-probability leakage region with upstream process equipment, extracting backtracking path features, and matching a process medium feature library, thereby realizing leakage source positioning. The leakage medium type is judged; and finally generating a structured traceability report. According to the method, high-precision identification, positioning and medium analysis of process leakage in a complex circulating water system can be realized, and the method has relatively high practicability and popularization value.

The invention discloses a regional water safety-oriented water demand prediction method, electronic equipment and a storage medium, and the method comprises the steps: firstly collecting an industrial water impact factor, a living water demand prediction impact factor, and an agricultural irrigation water demand prediction impact factor; then, a prediction equation for reflecting the future evolution trend of each influence factor is established for each influence factor, then an industrial water demand prediction model, a living water demand prediction model and an agricultural irrigation water demand prediction model are established, and the water demand prediction models are subjected to validity inspection; and finally, performing water demand prediction on a to-be-predicted area by using the inspected water demand prediction model to obtain a water demand prediction result. According to the method, economic driving, social influence, climate change and other factors are fully considered, the water demand change mechanism is researched from the internal structure of the system, the problems that in existing water demand prediction, factor selection is not comprehensive, and the simulation effect is poor are solved, and the prediction effectiveness and accuracy are improved from the two aspects of the model structure and the prediction factors.

The invention relates to the technical field of non-electrical variable control, and discloses an industrial water chiller temperature intelligent adjusting system, which comprises a refrigeration circulation loop and a control unit, the control unit calculates a steady state control component based on the water outlet temperature deviation, performs differential processing on the refrigerant pressure to extract the gradient, and outputs the gradient. Generating a transient compensation component when the gradient exceeds a dynamic noise threshold; according to the method, the problem of thermal lag is solved by utilizing the pressure wave transmission speed advantage, aggressive response is prevented from triggering low-pressure shutdown through a safety margin constraint mechanism, the pressure safety margin is calculated in real time, a gain coefficient is determined according to a nonlinear model, and a final driving instruction is generated. And the dynamic balance of the control response speed and the system physical security boundary is realized.

The invention discloses a coal seam chemical outburst elimination method based on molecular dynamics, which belongs to the field of coal mine safety, and comprises the following steps: sampling and analyzing to obtain the element proportion, group composition and chemical bond connection mode of a coal sample, constructing a real coal molecular skeleton, and reducing and optimizing the molecular structure of coal by molecular simulation; the method comprises the following steps: adding a surfactant, setting the real gas content, gas pressure and environment temperature of a coal seam, establishing a micro model after the surfactant is injected into the coal seam, simulating the occurrence state and reaction process of methane molecules in the coal seam under the action of the surfactant, and determining the methane content in the coal seam by combining the migration characteristics of the methane molecules and the energy change of the system. And the concentration of the injected surfactant is optimized, so that the engineering application of large-range industrial water injection outburst elimination of the coal seam is developed. According to the method, through molecular simulation, the complex occurrence characteristics of the coal seam are considered, the concentration of the injected surface active agent is optimized, and the hydraulic measure efficiency is improved.

The invention belongs to the technical field of regional water environment supervision, and discloses an industrial water pollution traceability method based on a convolutional neural network and water quality fluorescence fingerprints, and the method comprises the steps: obtaining wastewater water quality fluorescence fingerprint information based on a three-dimensional fluorescence spectrum technology, and constructing a CNN pollution traceability classification model by using three-dimensional fluorescence spectrum data as input; and outputting the category of the sample, and inputting the three-dimensional fluorescence spectrum data of the unknown sample into the trained CNN pollution traceability classification model to obtain a suspected pollution source. The industrial water pollution tracing method based on the convolutional neural network and the water quality fluorescent fingerprints is developed for industrial wastewater-urban sewage compound sewage treatment plants and industrial park sewage treatment plants, has the characteristics of simplicity and convenience in operation, low cost, high efficiency and good accuracy, has a relatively high practical application value, and has a wide application prospect. The standard-exceeding emission pollution source can be quickly identified, and technical support is provided for regional water environment supervision.

The invention provides an irrigation district water diversion quantity multistage distribution method under total quantity index constraint, comprising the following steps: dividing an irrigation district into a plurality of calculation units based on an administrative division boundary and a canal system network; respectively calculating the initial water demand of each calculation unit under the living water demand, the industrial water demand, the agricultural water demand and the ecological water demand; based on the initial water demand and according to multiple water resource rigid constraint indexes, performing at least one round of checking and pressure reduction on the initial water demand of each calculation unit to obtain an initial distribution water amount of each calculation unit; and carrying out secondary distribution on surplus water generated after checking and pressure reduction, and compensating the calculation units of which the water demand is not met to obtain the final distribution water of each calculation unit. According to the method, fair, reasonable and efficient distribution of water resources in a complex system with cross coupling of administrative division and canal system networks is realized, and the problems of conflict between a scheme and actual management requirements, water consumption contradiction and the like caused by a traditional single-dimension distribution method are avoided.

The invention belongs to the technical field of storage and charging equipment, and particularly relates to a storage and charging all-in-one machine which comprises a shell cooling mechanism, the interior of a shell is divided into a battery bin and an inversion bin, a battery module is arranged in the battery bin and comprises a plurality of stacked battery cells, an alternating-current and direct-current inverter is arranged in the inversion bin, and the battery cells are connected with the alternating-current and direct-current inverter. And the AC / DC inverter is electrically connected with the battery module. According to the invention, a closed-loop liquid cooling circulation system is adopted, heat conduction liquid can rapidly take away heat when the battery cell works, performance degradation or potential safety hazards of the battery cell caused by too high temperature are avoided, the heat dissipation area is increased through the design of the circuitous and surrounding insulating heat conduction pipe, and the cooling efficiency is obviously higher than that of a traditional air cooling scheme in cooperation with constant temperature control of the industrial water cooler. The shell is divided into the battery bin and the inverter bin, the battery module and the alternating current and direct current inverter are arranged in a partitioned mode, mutual interference of heat generated when the battery and the inverter work can be properly avoided, maintenance of all parts is facilitated, and the operation stability of equipment is improved.

The invention relates to the technical field of scale inhibition materials, in particular to a slowly-dissolved micro-nano dispersion scale inhibition material and a preparation method thereof. The composite material comprises a four-layer structure, wherein a porous hydroxyapatite core anchors DTPMP through phosphate radical vacancy to inhibit burst release; sulfonated polyetheretherketone and a cross-linking agent are compounded to form an ion selective controlled release layer, and the diffusion rate of the scale inhibitor is regulated and controlled; photo-thermal conversion graphene quantum dots are embedded in a temperature-sensitive hydrogel shell, and dynamic release is triggered through temperature or Ca < 2 + > concentration; and the corrosion resistance and the mechanical stability are enhanced by the atomic layer deposited ceramic layer and the epoxy resin packaging layer. By constructing a four-layer composite slow-release system, long-acting scale inhibition, extreme tolerance and dynamic response are achieved, the technical problems that a traditional scale inhibition material is high in burst release rate, poor in weather resistance and delayed in release are solved, the water treatment cost per ton is low, the RO membrane service life is long, and a full-period efficient scale inhibition solution is provided for a complex industrial water system.

The invention discloses a fluidized bed-double membrane method deep defluorination device which comprises a plurality of fluidized bed reactors, water inlets of the fluidized bed reactors are connected with a water inlet pipe through first electromagnetic valves, stainless steel filter screens are arranged at the lower ends of the fluidized bed reactors, and cloth carrier layer seed crystals are arranged below the stainless steel filter screens. A fluidized bed clarification area is arranged above the stainless steel filter screen, a fluidized bed water outlet is connected with an ultrafiltration water inlet of a first ultrafiltration membrane column through a first high-pressure diaphragm pump, an ultrafiltration water outlet of the first ultrafiltration membrane column is communicated with an adjusting tank, and the adjusting tank is connected with a reverse osmosis water inlet of a reverse osmosis membrane column through a second high-pressure diaphragm pump; and a reverse osmosis water outlet of the reverse osmosis membrane column is connected with a water production tank. The fluorine ion concentration of the effluent is far higher than 10mg / L of the GB 30484-2013 battery industry pollutant discharge standard, and stably reaches below 1mg / L, so that the quality of the effluent meets the reuse water standard of the semiconductor industry, and the reuse rate of the industrial water is improved.

The invention discloses a rare earth element doped stainless steel oxygen evolution electrode and a preparation method thereof, and belongs to the technical field of electrode preparation. The preparation method of the stainless steel oxygen evolution electrode comprises the steps that stainless steel with impurities removed serves as an anode and is placed in an alkaline solution with the concentration being 7-12 mol / L, cyclic voltammetry is adopted, stainless steel treated through cyclic voltammetry is obtained, and the potential window is-0.3 V to 1.5 V; the stainless steel is placed in an alkaline solution with the concentration being 1-2 mol / L and serves as an anode for electrolysis, and anodic oxidation stainless steel is obtained; the anodic oxidation stainless steel is placed in a cerium ion solution, a cyclic voltammetry method is adopted, the stainless steel serves as an anode to be treated, and a stainless steel oxygen evolution electrode is obtained through electro-deposition; wherein the potential window is-1.5 V to 1.0 V (+ / -0.5 V). The preparation method is simple, the cost is low, large-scale preparation is easy, long-time, high-temperature and other complex preparation processes are not needed, and when the electrode is used as an electrode for electrolyzing oxygen evolution in water, the electrode has excellent catalytic activity and shows huge application prospects in large-scale industrial hydrogen production through water electrolysis.

The invention relates to the technical field of hydraulic engineering and computer application, and particularly provides an industrial water demand prediction method based on big data mining and physical mechanism dual-drive, and the method comprises the steps: carrying out the space-time alignment and feature anchoring of a multi-source database by taking an industrial water full-cycle element as an index; establishing an inter-index nonlinear semantic association network; multi-dimensional indexes in the nonlinear semantic association network are input into the dynamic entropy weight redundancy elimination model, redundant features are eliminated, and an industrial water sensitive factor set is generated; constructing an industrial water constitutive equation with explicit interpretability in combination with physical correlation characteristics of the core control chain; and performing bidirectional embedding with a social economic parameter prediction module to form a double-engine prediction architecture which takes a physical mechanism equation as a core driving force and takes a real-time data stream as a dynamic corrector, thereby realizing mechanism-data dual-drive prediction of industrial water demand evolution. According to the method, the problem that a prediction result of a traditional data-driven model in an industrial scene is not traceable is solved.

The utility model discloses a waste heat recovery system for a water-cooled air compressor, which comprises the water-cooled air compressor, a cooling tower, a heat exchange element, a hot water user side, a circulating pump set I and a circulating pump set II, and a cooling water outlet of the water-cooled air compressor is connected with a heating medium inlet of the heat exchange element through a cooling water return main pipe I; a heating medium outlet of the heat exchange element is connected with the water return end of the cooling tower through a second cooling water return main pipe, the water outlet end of the cooling tower is connected with a cooling water inlet of the water-cooled air compressor through a cooling water inlet main pipe, and a first circulating pump set is arranged on the cooling water inlet main pipe. A refrigerant inlet of the heat exchange element is externally connected with industrial water through a second circulating pump set and a pipeline, and a refrigerant outlet of the heat exchange element is connected with a hot water user side through a pipeline. High-temperature cooling water from the water-cooled air compressor exchanges heat with low-temperature industrial water in the heat exchange element, burden is relieved for the cooling tower, the industrial water with the increased temperature is conveyed to a hot water user side to be used, and heat energy waste is reduced.

The invention relates to the technical field of precise temperature control, and discloses a liquid level temperature control system of an industrial water chiller, which comprises a liquid level adjusting loop, a temperature adjusting loop and a cooperative control device with a one-way logic channel, and calling a preset flow mapping model to check a mass flow estimated value, calculating an instantaneous enthalpy flow change rate introduced by a water supplementing action, converting the instantaneous enthalpy flow change rate into a feedforward compensation signal, superposing the feedforward compensation signal to a temperature adjusting loop, and executing model parameter self-calibration logic based on thermal response residual. Zero time difference immunization on water replenishing thermal disturbance is realized; meanwhile, flow model parameters are reversely corrected through temperature residual errors, and the adaptive capacity of the system for resisting water pressure fluctuation and assembly aging under the flowmeter-free working condition is improved.

The invention discloses a preparation method of a low-chlorine composite environment-friendly coal transportation anti-freezing agent, and belongs to the technical field of anti-freezing solutions. The anti-freezing solution is used for solving the technical problems of complex components and poor anti-freezing and metal corrosion resistance of the anti-freezing solution for coal transportation in the prior art. The preparation method of the low-chlorine composite environment-friendly coal transportation anti-freezing agent comprises the following step: uniformly mixing the compound pour point depressant, the modified corrosion inhibitor, the thickening stabilizer and the industrial water to prepare the low-chlorine composite environment-friendly coal transportation anti-freezing agent. The compound pour point depressant comprises an organic pour point depressant and an inorganic pour point depressant; the organic pour point depressant is obtained by reacting unsaturated azole, sodium methallyl sulfonate and fumaric acid; the unsaturated nitrogen is obtained by reaction of an intermediate B and benzaldehyde, and the intermediate B is obtained by reaction of triazole and ethyl chloroacetate; the modified corrosion inhibitor is obtained by carrying out a reaction on potassium thiocyanate, benzoyl chloride and chitosan vanillin Schiff base. The anti-freezing solution prepared by the invention has the advantages of moderate fluidity, good metal corrosion resistance and good anti-freezing performance.

The invention belongs to the technical field of preparation of nano fluorescent materials, and particularly relates to a preparation method and application of a polymer-based sulfur quantum dot water treatment agent. The preparation method comprises the following steps: (1) adding sulfur powder and a dispersing agent into an alkaline solution to prepare a mixed solution; (2) putting the mixed solution obtained in the step (1) into a water bath at 70-90 DEG C, heating, stirring and reacting for 15-20 minutes, and then adding an etching solvent; and (3) continuously reacting for 5-6 hours until the reaction is finished, adding the etching solvent again, and keeping the temperature for 0.5-1 hour to obtain a brownish red solution which is the sulfur quantum dot water treatment agent. The preparation method of the polymer-based sulfur quantum dot water treatment agent has the advantages of simple process, short preparation time, mild reaction conditions, low energy consumption, low cost and the like, and the prepared fluorescent sulfur quantum dot water treatment agent is simple in component and good in water solubility, can be used for inhibiting mineral scales and bacteria in industrial water, and has good application prospects. The concentration of the water treatment agent is monitored and controlled on line, and industrial production and market application prospects are achieved.

The invention provides a degreasing agent and a body-in-white pretreatment process. The degreasing agent comprises a compound agent, and the compound agent comprises the following components in percentage by weight: 1%-5% of hydroxide, 50%-60% of carbonate, 20%-30% of silicate, 5%-10% of sodium pyrophosphate and 13%-20% of a chelating agent. The body-in-white pretreatment process comprises the following steps: a flood water washing procedure: washing and preheating a plate of a body-in-white; a pre-degreasing step in which a pre-degreasing bath solution is sprayed onto the surface of the plate by means of spraying; a main degreasing procedure, specifically, a main degreasing bath solution containing the degreasing agent is used for conducting degreasing treatment on the plate, the free alkalinity of the main degreasing bath solution is controlled to range from 16 Pt to 19 Pt, and the oil content of the main degreasing bath solution is controlled to be smaller than 3.0 g / L; and an industrial water washing procedure: washing the plate to remove the main degreasing bath solution remaining on the surface of the plate.

The invention relates to the technical field of paint removers, and particularly discloses an environment-friendly water-based paint remover for tools as well as a preparation method and application of the environment-friendly water-based paint remover. The invention provides an environment-friendly water-based paint remover for tools. The environment-friendly water-based paint remover is specifically prepared from 280-320 parts of a main solvent, 40-54 parts of a solubilizer, 30-40 parts of a surfactant, 7-13 parts of a penetrating agent, 130-150 parts of monoethanolamine, 8-12 parts of sulfonic acid, 40-58 parts of caustic soda flakes, 1-5 parts of a thickening agent and 280-320 parts of water. The main solvent is formed by mixing benzyl alcohol and dipropylene glycol monomethyl ether according to the weight ratio of (0.1-1): (1-10); the preparation method of the penetrant comprises the following steps: reacting phthalic anhydride, ethylene glycol and hydroquinone to obtain modified polyester; and then mixing the modified polyester with isooctanol polyoxyethylene ether JFC-3 to obtain the modified polyester. The paint remover prepared by the invention has good paint removal efficiency, and can effectively improve the production efficiency of an automobile coating factory and reduce the comprehensive cost.

The invention discloses an industrial water quota dynamic evaluation method and system based on real-time data, and relates to the technical field of water quota evaluation. Comprising the following steps: data acquisition: acquiring a water use department of an evaluation factory to obtain a target department, and acquiring past water use information of the target department to obtain past water use data; according to the invention, through a set matching method, the preset water consumption information is obtained by matching the real-time time according to the previous water consumption data, then the preset water consumption quota information is continuously optimized and adjusted through a set optimization adjustment method in cooperation with the real-time data to obtain a water consumption quota information set updated in real time, and through a set influence discrimination method, the water consumption quota information set is accurately determined. Therefore, a subsequent optimization adjustment method can further adjust and optimize all the pre-used water quota information according to one piece of pre-used water quota information, so that the flexibility and evaluation efficiency of dynamic adjustment of the water quota can be improved, and the timeliness of adjustment of the industrial water quota can be ensured; therefore, the operation efficiency of a chemical manufacturing plant is improved.

The invention relates to a wet type multifunctional dust suppressant for a coal mine and a preparation method thereof. The wet type multifunctional dust suppressant consists of a component A and a component B, wherein the component A is prepared from surfactants such as AP470Z, Tween-80, Dow TRITON CF-10, Yinhuo Dynol 607 and Digao TEGO245, as well as glycerol, a de-foaming agent and industrial water; the component B is prepared from pregelatinized cassava starch, high-viscosity yellow dextrin, sodium carbonate, potassium carbonate, sodium hydroxide, industrial water and the like. And uniformly mixing the component A and the component B according to a mass ratio of 1: 1 to prepare the wet type multifunctional dust suppressant for the coal mine. The wet type multifunctional dust suppressant for the underground coal mine has obvious effects of reducing coal and rock dust and removing hydrogen sulfide gas, and is excellent in comprehensive performance, convenient to produce and simple to use. The dust suppressant can also be used for dust prevention and dust falling in the fields of roads, sand fields and the like, the dust suppressant can be sprayed to underground roadways and working faces prone to generating dust, the dust suppressant can rapidly permeate into oily pulverized coal, the pulverized coal is coagulated and settled, meanwhile, hydrogen sulfide gas in air and coal rock masses can be decomposed, and the purposes of dust falling and hydrogen sulfide gas removal are achieved.

The invention relates to the technical field of catalysts, and particularly provides a low-load noble metal catalyst for industrial water electrolysis and a preparation method thereof. According to the preparation method, thin-layer two-dimensional layered double hydroxide (LDH) is used as a substrate material, a hydrothermal reaction is performed at a certain temperature and pressure to load noble metals (Ru, Rh, Pd, Ag, Ir, Pt, Au and the like), then washing, impurity ion removal and drying are performed to obtain a target product, the obtained electrocatalyst is ultralow-loading noble metal loaded LDH, the loading amount of the noble metals accounts for 0.1 wt%-0.5 wt%, and the loading amount of the noble metals accounts for 0.1 wt%-0.5 wt%. The prepared electrocatalyst can realize efficient and stable water decomposition with industrial-grade current density. The obtained electrocatalyst has high catalytic activity and durability under industrial conditions; and the preparation process is simple to operate and good in repeatability, and the loading capacity of the noble metal is greatly reduced.

The utility model discloses a sewage zero-discharge treatment device for a filter production line, and belongs to the field of wastewater treatment. The device comprises an oil removal unit, a reaction unit, a filtering unit, a water production unit, a chemical adding unit, a sludge treatment unit and a concentrated water treatment unit, the feeding unit, the reaction unit, the filtering unit and the water production unit are connected in sequence, and the chemical adding unit is connected with the reaction unit and the filtering unit. The sludge treatment unit is respectively connected with the reaction unit and the filtering unit, the concentrated water treatment unit is connected with the rear end of the filtering unit, the device is used for treating the sewage of the filter production line, the operation is simple, the daily operation is stable, and the effluent quality can meet the water quality of industrial water for recycling urban sewage.

The invention relates to a mining underground hydrogen sulfide removal dust falling agent and a preparation method thereof, and belongs to the technical field of dust suppression and dust falling. The dust settling agent provided by the invention comprises the following components: 10-15 parts of fatty acid methyl ester sodium sulfonate; 3 to 5 parts of sodium lauryl sulfate; 4 to 6 parts of sodium dodecyl benzene sulfonate; 3 to 5 parts of dodecyl amine; 1-3 parts of sodium bicarbonate; according to the present invention, through the synergistic interaction effect of the surfactant, the dust particles and the liquid are well dispersed and wetted, and the reaction of the sodium bicarbonate and the hydrogen sulfide is promoted so as to increase the dust adsorption efficiency and the hydrogen sulfide gas neutralization effect, such that the technical purpose of the present invention is achieved. The raw materials are easy to obtain, the preparation process is simple and convenient, the cost is low, the effect is remarkable, the working environment of coal miners can be effectively improved, and safety and health of the miners are guaranteed.

The invention relates to a ferrous sulfide cleaning method based on a ferrous sulfide cleaning device, and belongs to the technical field of petrochemical engineering treatment equipment. The method specifically comprises the steps that inspection preparation work before operation is conducted, a PLC control system injects industrial water and passivating agent liquid into a dissolving tank according to a given proportion, an electric pump B is started, the electric pump B can continuously supply liquid into equipment to be cleaned, meanwhile, a solution at the bottom of the equipment to be cleaned flows back into the dissolving tank, and the solution circularly enters and exits from the equipment to be cleaned; and according to the detected parameter change of the iron ion on-line monitor, the PLC control system automatically judges that the cleaning is finished when the change of the iron ion content does not exceed 10% in the latest two hours after the circulating cleaning is performed for 12 hours. The problems that manual matching control of industrial water and passivating agent liquid is not accurate, the iron ion content and the PH value cannot be analyzed on line, whether passivation cleaning is qualified or not cannot be automatically judged, and manual labor investment is large are solved.

The utility model provides a fluidized bed, which relates to the technical field of industrial water treatment and comprises a settling section, a fluidizing section and a water and medicine feeding section which are sequentially arranged from top to bottom, a crystal inducing carrier feeding port is arranged at the upper end of the settling section and is used for feeding a crystal inducing carrier into the fluidized bed, so that to-be-recycled elements are attached to the surface of the crystal inducing carrier; a water producing port and a circulating water outlet are formed in the side wall of the settling section, the water and medicine inlet section is provided with a water inlet, a medicine inlet and a circulating water inlet, the circulating water outlet is connected with the circulating water inlet through a circulating pipeline, and a circulating pump is arranged on the circulating pipeline; the chemical inlet is used for adding chemicals to the fluidized bed so as to adjust the hardness of water to be treated; the problems that in the prior art, when industrial water is treated through a chemical method, the treatment efficiency is low, and the water content of the suspension is high in the mode that the suspension is formed by clarifying elements to be recycled are solved.

The utility model discloses a chromium-containing wastewater treatment system which comprises a concentrated chromium waste liquid treatment unit, a dilute chromium wastewater treatment unit and a recovery treatment unit, a concentrated chromium waste liquid outlet of the unit line is communicated with an inlet of the concentrated chromium waste liquid treatment unit, and a liquid outlet of the concentrated chromium waste liquid treatment unit is communicated with a liquid return port of the unit line; a dilute chromium wastewater outlet of the unit line is communicated with an inlet of the dilute chromium wastewater treatment unit, a concentrated water outlet of the dilute chromium wastewater treatment unit is communicated with an inlet of the concentrated chromium waste liquid treatment unit, and a produced water outlet of the dilute chromium wastewater treatment unit is communicated with an inlet of the recovery treatment unit; a concentrated water outlet of the recovery treatment unit is communicated with an inlet of the concentrated chromium waste liquid treatment unit, and a produced water outlet of the recovery treatment unit is communicated with an industrial water pipeline. The device has the beneficial effects that the concentrated chromium waste liquid treatment unit, the dilute chromium waste water treatment unit and the recovery treatment unit are designed, concentrated chromium waste liquid and dilute chromium waste water are treated in a quality-divided manner, and the treatment manner can reduce the addition of chemicals, improve the utilization rate of the chemicals, reduce the treatment cost, and is green and economical.

The invention relates to the technical field of water quality analysis, in particular to a water environment on-line monitoring system which comprises the steps of obtaining ammonia nitrogen, total phosphorus and pH value direction identifiers and performing aggregation analysis, identifying trend convergence sections, dividing turning segments and extracting trend features, screening cross trend combinations, concluding jump nodes and identifying interference points. And marking direction mismatch and generating a derailment combination. According to the method, the change of key indexes such as ammonia nitrogen, total phosphorus and pH value is continuously extracted, the load change direction and the cooperation trend are identified, the index fluctuation rhythm and jump nodes are further compared, and the pollution trend structure and direction mismatch combination is extracted, so that potential abnormal sections and interference points are effectively revealed; the identification depth and the time sequence analysis capability of the dynamic pollution in the reclaimed water conveying process are enhanced, so that the urban resident water is treated to form the reclaimed water, the water quality is stable and qualified after the reclaimed water is conveyed to an industrial park, and more accurate and structured monitoring support is provided for the water quality compliance of the industrial water.

The invention relates to a precooling heat exchange system of an oxygenerator. An outdoor circulation system is used for cooling and heat exchange and then circulating to an indoor heat exchange system for heat exchange; the system further comprises a control system, the control output end of the control system is connected to the outdoor circulating system, the signal input end of the control system is connected to the indoor circulating system, the indoor circulating system comprises a tubular heat exchanger, a water-cooling water chilling unit and an indoor circulating pump, and primary industrial water is cooled through the tubular heat exchanger; the outdoor circulating system comprises an outdoor plate heat exchanger, a closed cooling tower and an outdoor circulating pump, and when the outdoor environment temperature is lower than-2 DEG C, the temperature formed by the tubular heat exchanger completing the indoor circulating system is reduced through natural low-temperature heat exchange of the outdoor plate heat exchanger; a shell pass heat exchange medium of the tubular heat exchanger is cooled in the outdoor closed cooling tower; the power consumption is greatly reduced, and high-efficiency heat exchange and energy-saving operation of the pre-cooling system is finally realized.

The three-way ball valve comprises a valve body, a valve rod and a ball core, an inlet and two outlets are formed in the valve body, an L-shaped channel is formed in the ball core, the channel comprises two channel openings, a filter cover is arranged outside the ball core, a through hole consistent with the channel openings in diameter is formed in the filter cover, and a filter screen covers the through hole. A first valve seat is arranged at the inlet, a second valve seat is arranged at the outlet, a control rod parallel to the valve rod is arranged on the filter cover, and a through cavity allowing the control rod to penetrate through and rotating in the circumferential direction of the valve rod is formed in the valve body. A fixing part for fixing the control rod and the valve body is arranged between the control rod and the valve body, the filter cover can be controlled to rotate along the ball core through the control rod, and after the filter cover rotates until the through hole is aligned with the inlet, the filter cover is fixed through the fixing part, and industrial water entering from the inlet can be filtered.

The invention provides a scale inhibition dispersant and a preparation method and application thereof, and belongs to the technical field of water treatment.The prepared mesoporous silica composite material takes mesoporous silica as a main framework, carbon quantum dots are embedded in mesopores of the mesoporous silica composite material, and the outer surface of the mesoporous silica composite material is coated with a chitosan-polyethylene glycol grafted copolymer; the coated chitosan-polyethylene glycol grafted copolymer is used for blocking external liquid, so that the carbon quantum dots in mesopores can be kept stable at high temperature, and the chitosan-polyethylene glycol grafted copolymer is easy to swell or change in conformation at high temperature and is matched with sodium tannate and the like, so that the stability of the carbon quantum dots is improved. The carbon quantum dots can be uniformly and slowly released at a high temperature, and sufficient dispersity is maintained, so that good scale inhibition performance at the high temperature is ensured, and the requirements of high-temperature and high-pressure industrial water environments such as steam boilers are met.

The invention relates to an efficient energy-saving intelligent industrial water heater which comprises an air energy heat pump main machine and a water storage device, the air energy heat pump main machine communicates with the water storage device through a water pipe, the water storage device comprises a water storage assembly and a heat collection assembly, and the heat collection assembly is arranged above the water storage assembly. The water storage assembly comprises an outer shell and an inner shell, the inner shell is arranged in the outer shell, a heat preservation unit is arranged between the inner shell and the outer shell, and the heat preservation unit comprises a heat insulation layer and a water guide pipe. A temperature barrier is formed on the periphery of the inner shell, so that the heat loss speed in the inner shell is slowed down, the energy-saving effect is achieved, intelligent switching of heat collection and electric heating is achieved through real-time water temperature monitoring, and the water temperature maintaining efficiency is improved.