2158 results about "Chemical agent" patented technology

The invention relates to the technical field of water treatment intelligent control, in particular to an AI-based intelligent urban water purification and sewage treatment process optimization system and method, and the method comprises the steps: obtaining related sensor data information, and monitoring and recording the change of key data in real time; establishing a water quality change prediction model by using a multiple linear regression model, wherein the water quality change prediction model predicts the water quality change according to the key data change acquired in real time; the dynamic agent AI model adjusts the dosage, and the water treatment chemical / biological reaction kinetics AI model predicts the pollutant degradation condition; a local lightweight AI model optimizer and a multi-target genetic algorithm are combined with energy consumption, medicament cost, processing efficiency and carbon emission to obtain an optimal control model; the optimal control model optimizes the operation parameters of the sewage treatment process according to the pollutant degradation condition. According to the method, the operation parameters of the sewage treatment process are optimized through the optimal control model, the energy consumption, the agent cost and the carbon emission are reduced, and the treatment efficiency is improved.

The invention relates to the technical field of production process control, in particular to a PVC developing functional granule production control method and system, and the method comprises the steps: calling a spectrometer to capture spectral data emitted from PVC granules in real time based on the starting of a production line, analyzing the intensity and wavelength distribution in the spectral data in real time, and generating spectral data characteristic values; and comparing and analyzing the deviation of historical data and real-time data through the spectral data characteristic value, and generating a deviation dynamic prediction analysis result. According to the invention, by monitoring and analyzing the spectral data of the PVC granules in real time, the response speed and precision of a production line are improved, and the spectral data are compared in real time, so that production deviations such as light source intensity and reaction temperature can be quickly found and adjusted, material waste is reduced, the output quality is improved, and continuous data analysis helps to adjust chemical agent feeding and heating power; product consistency is guaranteed, automatic fault diagnosis is achieved, production parameters are adjusted in time, the service life of equipment is effectively prolonged, shutdown is reduced, and cost benefits are increased.

The invention relates to the technical field of sewage treatment, and discloses a supervision system and method for a sewage treatment process, and the system comprises a multi-parameter real-time monitoring module, a data fusion and analysis module, an automatic dosing control module and a feedback optimization module. The method is applied to the system. According to the supervision system and method for the sewage treatment process, dynamic and accurate supervision of the sewage treatment process is realized through the synergistic effect of the multi-parameter real-time monitoring module, the data fusion and analysis module, the automatic dosing control module and the closed-loop feedback optimization module; the problems of parameter simplification, control lag, high energy consumption and the like in the prior art are solved, the standard reaching rate of effluent is increased, and meanwhile, the agent cost and the equipment maintenance cost are reduced.

The invention discloses a water environment pollution water treatment and purification device and a purification method thereof, and belongs to the technical field of water treatment, the water environment pollution water treatment and purification device comprises a water inlet tank, a treatment tank is fixedly connected to one side of the water inlet tank, a water outlet tank is fixedly connected to one side of the treatment tank, and water pumps are fixedly connected to the water inlet tank and the water outlet tank; the input end of the water pump is fixedly connected with a water pumping pipe. According to the conveying device, the first motor drives the transmission wheels to rotate, the transmission wheels drive the belt and the other transmission wheel to rotate synchronously, then the connecting shaft rotates, the connecting shaft drives the reciprocating lead screw to move in the fixing plate, the reciprocating lead screw pushes the threaded cap to move, the threaded cap drives the transverse plate to move synchronously, and then the conveying cylinder moves stably in the horizontal direction. Chemical agents can be evenly distributed in the treatment box, the chemical agents and sewage are fully mixed through continuous stirring of the stirring blades, the purification effect is achieved, and finally treated water is sucked into the water outlet box through the water pump and discharged through the water outlet valve.

The invention discloses a chlorella microalgae and an application of the chlorella microalgae in sewage treatment, and the collection number of the chlorella is CCTCC (China Center for Type Culture Collection) 20231952. Chlorella is used for treating sewage, and for oil-containing food processing plant wastewater, compared with activated sludge, chlorella has no growth inhibition on high-oil wastewater. For printing and dyeing wastewater which cannot be treated by activated sludge, chlorella can be used for directly treating the printing and dyeing wastewater. The treatment of animal husbandry wastewater shows that the chlorella further degrades refractory organic matters (COD (Chemical Oxygen Demand) is reduced to 200mg / L or below) in the sewage and can replace an advanced treatment end, namely, the dosage of chemical agents is reduced, the secondary pollution is avoided, and the cost is saved. Meanwhile, the treatment conditions of anaerobic effluent and raw wastewater show that compared with an activated sludge method and an anaerobic digestion method, the chlorella can more quickly and efficiently remove organic matters in sewage.

The invention relates to the technical field of microorganisms, in particular to talaromyces purpurogenus, strain fermentation liquor of the talaromyces purpurogenus and application of the talaromyces purpurogenus to prevention and treatment of northern corn leaf blight. The invention provides biocontrol fungus fermentation liquor for preventing and treating northern corn leaf blight and application of the biocontrol fungus fermentation liquor. The preservation number of a strain of the biocontrol fungus fermentation liquor is CGMCC No.41911. The strain and the fermentation liquor thereof can completely inhibit various pathogenic bacteria, active substances in the fermentation liquor are relatively stable, the active validity period is long, the systemic property is relatively strong, the strain is not easy to degrade, high temperature resistance and microwave radiation resistance are realized, the antibacterial effect of chemical agents can be remarkably improved, and the effects of pesticide reduction and synergism are remarkably achieved when the strain and the fermentation liquor are mixed with chemical pesticides; therefore, the environmental safety problem and the drug resistance caused by chemical pesticides are obviously reduced.

The invention relates to the technical field of waste gas treatment, and discloses a method for treating odor, peculiar smell and organic waste gas through pretreatment enhanced absorption. The method comprises the following steps: acquiring waste gas component characteristic parameters through a sensor; calculating a pretreatment medicament formula by using a convolutional neural network; adding a medicament according to the instruction to remove easily-treated components and hardening and tempering difficultly-treated components; monitoring absorption liquid parameters to form characteristic indexes; adjusting gas-liquid distribution based on indexes to construct an optimal environment; introducing the quenched and tempered waste gas into the environment for enhanced absorption to obtain standard gas. Aiming at stink, peculiar smell and organic waste gas with complex and changeable components, through combination of intelligent pretreatment and enhanced absorption, components which are easy to treat and difficult to treat are efficiently and synergistically removed, meanwhile, the dosage of chemicals is reduced, the treatment stability is improved, and strict emission standard requirements are met.

The invention relates to the technical field of sewage treatment, in particular to domestic sewage treatment equipment which comprises a sewage treatment shell, a cover plate is clamped to the top of the sewage treatment shell, a water purification tank is fixedly mounted at the bottom of the sewage treatment shell, and an adsorption plate is fixedly connected to the inner wall of the sewage treatment shell. The bottom of the inner wall of the sewage treatment shell is fixedly connected with a purification mechanism; a filtering mechanism is clamped at the top of the purifying mechanism; the outer wall of the filtering mechanism is rotationally connected with the inner wall of the sewage treatment shell. In the prior art, when sewage is treated, chemical agents are added to carry out harmless treatment on the chemical agents used in experiments, but in the process, the consumed time is long, part of by-products are generated, the by-products still need to be treated in many steps, and the treatment cost is low. Parts of equipment in the prior art cannot be self-cleaned, so that the purification effect is poor or blockage is caused, and sewage treatment cannot reach the standard after the equipment is used for a long time.

A silicon-containing resist underlayer film forming composition for forming a resist underlayer film which is able to be removed not only by a conventional dry etching method but also by a wet etching method that uses a chemical agent, and which has excellent lithography characteristics, while enabling the achievement of a high etching rate during wet etching. A silicon-containing resist underlayer film forming composition which contains (A) a polysiloxane, (B) nitric acid, (C) a bisphenol compound and (D) a solvent.

The invention discloses a pulping and papermaking industry sewage treatment process, relates to the technical field of sewage treatment, and adopts a dynamic adjustment algorithm and a PID control mechanism to monitor the concentration, flow and water temperature of suspended solids in real time, the dosage of chemicals can be automatically adjusted, the concentration is stabilized to be close to a target value, the waste of chemical chemicals is reduced, and the sewage treatment efficiency is improved. Meanwhile, the stability and effect of sewage treatment are improved, a reinforcement learning RL algorithm is introduced, the aeration intensity and time are adjusted in real time, the ammonia nitrogen concentration is controlled, the organic load is removed, the RL algorithm can continuously optimize the aeration strategy according to the change of the ammonia nitrogen concentration and the organic load, and therefore the removal efficiency is improved to the maximum extent; meanwhile, excessive aeration and unnecessary energy consumption are avoided, predictive control based on a random forest algorithm is adopted, the physical characteristics, including the moisture content, the solid content and the rheological property, of the sludge are analyzed in real time, and the concentration stirring strength and the concentration time are dynamically adjusted.

The invention provides a microorganism curing biochar material and a heavy metal sewage treatment method thereof. The microorganism curing biochar material comprises modified biochar, functional microorganisms, an intelligent responsive polymer coating and quantum dots. The high-performance material is prepared through acid treatment, loading of metal oxide modified biochar, compounding with specific functional microorganisms, coating of an intelligent responsive polymer coating and bonding of quantum dots, when heavy metal sewage is treated, all the components have a synergistic effect, the adsorption and conversion capacity is improved, the environmental adaptability is enhanced, real-time monitoring is achieved, and the application prospect is wide. The sewage treatment efficiency and quality are effectively improved; pretreatment is set in the sewage treatment process, and the addition proportion, the reaction temperature, the stirring rotating speed, the reaction time and the like of a microorganism solidified biochar material are reasonably controlled, so that the high removal rate of various heavy metal ions is realized; meanwhile, the microorganism solidified biochar material can be repeatedly used, so that the use of a large number of chemical agents is avoided, the secondary pollution is reduced, and remarkable economic and environmental benefits are brought.

The invention relates to the field of sewage treatment, in particular to a sewage treatment optimization method and device, electronic equipment and a storage medium. The method comprises the following steps: acquiring treatment parameters such as inlet water quality data, instantaneous flow, sewage types and outlet water quality requirements, matching corresponding treatment process constraint conditions according to the sewage types, and formulating differentiated treatment strategies according to characteristics of different types of sewage such as industrial wastewater, domestic wastewater and medical wastewater; the method comprises the following steps: determining sewage treatment data by combining instantaneous flow, effluent quality requirements and treatment process constraint conditions, calculating an aeration rate regulation value, sludge reflux and chemical agent dosage, realizing dynamic optimization of treatment parameters, generating a control instruction based on the optimized sewage treatment data, and issuing the control instruction to a sewage treatment system. The sewage treatment efficiency is effectively improved, and multi-target collaborative optimization sewage treatment is realized.

Cleaning systems and methods, wherein the system includes a chamber configured to receive a body part of a user or an object, where the user's skin or object is exposed to one or more cleaning, disinfecting and / or sterilizing processes, such as chemical agents, mechanical energy, ultraviolet light, and ultrasound, to clean, disinfect and / or sterilize the skin or object.

A system and method are provided for adding chemicals to a produced fluid in a wellbore. An exemplary system includes a gauge hanger and a permeable container. The permeable container includes a solid cylindrical body, end caps placed at each end of the solid cylindrical body, and holes disposed proximate to each end of the permeable container, wherein the holes allow the produced fluid to flow through the permeable container from one end of the permeable container to the opposite end of the permeable container. The system further includes a well treatment chemical disposed in the permeable container.

The invention belongs to the technical field of microbiology and agricultural application thereof, and particularly relates to bacillus aerosus, a microbial agent and application of the microbial agent. According to the invention, a strain with good antagonism on tobacco black shank and fusarium root rot is separated and screened from tomato roots, and is identified as aerobacillus, and chitinase, cellulase and protease are secreted to dissolve the cell wall structure of pathogenic bacteria hyphae and inhibit the growth of pathogenic bacteria, so that the pathogenic bacteria lose the infection ability, and the pathogenic bacteria are effectively prevented from being infected. The biocontrol microbial inoculant has the antibacterial effect on more than 10 plant pathogenic fungi, the antibacterial rate is greater than 80%, especially the antibacterial rate on phytophthora nicotianae and fusarium oxysporum is greater than 90%, and pot experiments and field experiments prove that the biocontrol microbial inoculant has the control effect on tobacco black shank and fusarium root rot obviously superior to those of commercially available biocontrol microbial inoculants and chemical agents; meanwhile, the tobacco seed germination can be promoted, the growth and development of field tobacco plants are promoted, the subculture stability is better, and the application prospect is wide.

The invention relates to the field of wastewater treatment, and discloses an intelligent conditioning and purifying device for bio-fertilizer production wastewater, the intelligent conditioning and purifying device comprises a treatment tank body, the upper end of the treatment tank body is provided with a medicament adding port, the upper end of the inner side of the treatment tank body is provided with a pre-filtering plate, and the lower end of the inner side of the treatment tank body is provided with a top filtering plate; bottom filter plates are vertically and movably arranged below the top filter plates, and gaps between the top filter plates are used for being filled with activated carbon particles; a stirring part is arranged at the upper end of the pre-filtering plate. According to the intelligent conditioning and purifying device for the bio-fertilizer production wastewater, medicament adding treatment, pre-filtering treatment and activated carbon purification treatment are integrated on one device, and meanwhile, a gap between a top filter plate and a bottom filter plate can be increased during activated carbon particle adsorption treatment, and activated carbon particles can be dispersed; the use effect of the activated carbon particles is improved, and the activated carbon particles are blown by water treated at the bottom, so that circular wastewater treatment is realized, and the wastewater treatment effect is improved.

The invention provides a garlic planting full-process database service system based on agricultural big data, which relates to the technical field of agricultural planting and comprises a planting planning module, a seeding management module, a growth monitoring module, a topdressing irrigation management module, a pest control module and a harvesting decision module. The planting planning module accurately matches varieties and base fertilizer formulas according to soil and yield data; the seeding management and growth monitoring module dynamically optimizes planting measures in combination with real-time data and historical experience; the topdressing irrigation module, the pest control module and the harvesting decision-making module utilize technologies such as image recognition and spectrum detection to realize a precise and scientific management strategy, effectively improve the resource utilization rate, reduce the influence of environmental fluctuation on garlic growth, reduce the use of chemical agents, realize full-process data driving by integrating multi-source data, and improve the management efficiency. Meanwhile, a complete planting file is formed to support strategy iteration, large-scale and efficient development of garlic planting is facilitated, and then the economic benefits of garlic planting are effectively improved.

The invention relates to an oxygen delignification pulping method taking bagasse as a raw material, fine pulp and application of the fine pulp, and belongs to the technical field of pulping and papermaking. The pulping method comprises the following steps: preparing a cooking liquor with the alkali amount of 20-30% from sodium carbonate and sodium hydroxide in a mass ratio of (2-9): 1; mixing bagasse with the cooking liquor, and heating and preserving heat under an oxygen adding condition to obtain cooking slurry; washing and screening the cooked pulp to obtain fine pulp and black liquor; preparing green liquor from the black liquor, adding sodium hydroxide into the green liquor until the alkali consumption is the same as that of the cooking liquor, and recycling the green liquor to the cooking liquor. According to the invention, the used chemical agents are sodium carbonate as a main agent and sodium hydroxide as an auxiliary agent, so that corrosion to equipment is reduced, a causticization reaction process is omitted, harmful solid waste pollution caused by the causticization process is avoided, and direct cyclic utilization of the green liquor is realized. The content of silicon in the black liquor is relatively low, so that the risk of silicon interference in an alkali recovery section is reduced.

The utility model relates to a dosing and mixing device for oil field sewage treatment, which comprises a mixing box used for containing oil field sewage, a stirring component arranged in the mixing box, and a dosing component communicated with fluid in the mixing box through the stirring component, a blowing component is further arranged in the mixing box, the air blowing assembly penetrates through the stirring assembly and enables the mixing box to be communicated with external air, and the air blowing assembly is configured to blow air into the mixing box from the bottom of the mixing box. When the stirring assembly transversely stirs the oil field sewage and the chemical agent in the mixing box, gas blown in by the blowing assembly moves upwards from the bottom of the sewage in a bubble form and continuously and longitudinally turns over the oil field sewage and the chemical agent, so that the sewage and the chemical agent are rapidly and uniformly mixed, and the treatment efficiency of the oil field sewage is improved.

The invention discloses a gene RhNADP-LIKE for regulating and controlling Chinese rose flower aging, and particularly relates to the technical field of molecular biology and horticultural plant physiology. According to the invention, bottle insertion life phenotype data of 358 parts of core germplasm of tetraploid Chinese rose is screened through genome-wide association analysis (GWAS), and the gene RhNADP-LIKE significantly associated with senescence is identified. The gene accelerates the aging process of petals by regulating the accumulation of reactive oxygen species (ROS). After RhNADP-LIKE expression is inhibited by using a virus-induced gene silencing (VIGS) technology, the blooming period of rosa chinensis flowers is prolonged by about 2 days, and the ROS level is remarkably reduced. The invention provides a molecular target for prolonging the vase life of the Chinese rose, can be applied to gene editing breeding or development of an environment-friendly preservative, reduces the dependence of chemical agents, and improves the economic benefit and sustainable development potential of the cut flower industry.

The invention discloses a proportioning optimization method for efficiently balancing a chemical oil displacement system. The proportioning optimization method comprises the following steps: S1, collecting and sorting experiment and field data of the existing chemical oil displacement system; the oil displacement effect can be effectively improved by continuously optimizing the ratio of the chemical agents through experiments and numerical simulation, so that the recovery efficiency of an oil field is improved, the oil-water interface characteristics can be improved, the fluid viscosity can be reduced, the oil fluidity can be improved through the reasonable ratio of the chemical agents, and by analyzing the cost benefits of different ratios, the oil displacement effect can be effectively improved. The chemical agent combination with higher economical efficiency can be selected, the expenditure in the chemical oil displacement process is reduced, the oil displacement effect and cost are comprehensively considered, the resource utilization efficiency of the chemical oil displacement system is improved by optimizing the proportion, and it can be ensured that the selected proportion is not only theoretically effective but also theoretically effective through laboratory verification and on-site small-scale tests. And the method also has practical significance in practical application.

The invention provides an intelligent maintenance cleaning device for nanofiltration membrane pollution control and a method thereof, and solves the problems of low maintenance cleaning efficiency, poor adaptability of cleaning parameters and pollution conditions and frequent chemical cleaning of an existing nanofiltration system. Belongs to the technical field of membrane pollution control. According to the invention, the filtering system, the cleaning system and the intelligent decision-making module are integrally designed, so that the closed-loop control of the whole process of real-time monitoring, pollution identification, intelligent decision-making and automatic cleaning of the running state of the nanofiltration membrane is realized. The cleaning effect gating memory neural network model is used as a membrane pollution prediction model, membrane pollution can be accurately predicted, and key cleaning nodes can be identified. The optimal membrane cleaning parameters are generated by adopting a non-dominated sorting genetic algorithm, the usage amount of chemical agents and the cleaning cost are reduced, and the membrane pollution control effect is improved. The invention is applicable to the field of drinking water treatment.

The invention belongs to the technical field of urban water environment treatment and restoration, and discloses a method for improving the micro-ecological environment of bottom mud of an urban black and odorous river. The method specifically comprises the following steps that 1, calcium nitrate with the amount 1.6-1.8 times of theoretical calculation amount is added according to the AVS content in the black and odorous bottom mud to be repaired; 2, after the calcium nitrate reacts, calcium peroxide (CaO2) with the amount 1.3-2.0 times of the theoretical calculation amount is added. According to different reaction processes of AVS and ferrous iron in the black and odorous bottom mud and different oxidation capacities of calcium nitrate and CaO2, calcium nitrate is added firstly, and then CaO2 is added, so that removal of ferrous iron, AVS and organic matters in the black and odorous bottom mud is enhanced, chemical agents are scientifically and efficiently used, and the micro-ecological environment of the black and odorous bottom mud is continuously and effectively improved.

The utility model discloses a thermal hydrolysis cyanide breaking device, which relates to the technical field of wastewater treatment and comprises a cyanide breaking reactor, a wastewater heat exchanger, a pipeline mixer, a steam mixer, an instrument control valve and the like. After being heated by the wastewater heat exchanger, the wastewater enters a cyanide breaking reactor, and steam enters a steam mixer to heat the wastewater to a specified temperature and then enters the cyanide breaking reactor. The characteristic that the cyanide aqueous solution is easy to hydrolyze is utilized, so that the cyanide aqueous solution is hydrolyzed at the temperature of higher than 140 DEG C to produce sodium formate and ammonia, the toxicity of cyanide is eliminated, high-temperature wastewater discharged from the cyanide breaking reactor enters the wastewater heat exchanger to exchange heat with wastewater to be treated, and heat is recovered; the pressure of the reactor is controlled through a wastewater heat exchanger outlet wastewater outlet pipeline pressure regulating valve. The cyanide wastewater treatment device is reasonable in design, only a small amount of sodium hydroxide is needed for adjusting the pH of wastewater, no chemical agent needs to be added in other procedures, the cyanide wastewater treatment efficiency is improved, and the cost is saved.

The invention belongs to the technical field of pesticides, and particularly relates to a pesticide composition containing trifluorocide, which comprises a component A and a component B. The component A is thymol; and the component B is trifluorocide. The compound nematicidal composition can significantly improve nematicidal activity, can be processed into missible oil, granules, an emulsion in water, an aqueous solution and other common dosage forms applied in the agricultural field, is used for preventing and treating nematode diseases of vegetable crops, grain crops and fruit trees, has the advantages of low dosage and prominent effect, can delay the problem of drug resistance of existing chemical agents, and can be used for preventing and treating the nematode diseases of the vegetable crops, the grain crops and the fruit trees. The safety requirements of pesticide preparations are met.

The invention relates to the technical field of agricultural planting, in particular to a method for preventing and treating watermelon fusarium wilt by using a green bactericide, which comprises the following steps: preparing the green bactericide which comprises the following components in percentage by mass: 18-25% of composite plant source active component consisting of water lettuce extract, enteromorpha polysaccharide and field horsetail flavone; 20%-30% of an antagonistic bacterium compound preparation, wherein the antagonistic bacterium compound preparation comprises bacillus pumilus and trichoderma; 38%-45% of a nano-carrier, wherein a chitosan-sodium alginate compound is used as an embedding material; and the balance of auxiliary components. Applying the green bactericide to watermelon plants; through component optimization and a synergistic effect, compared with the prior art, the composition has the remarkable advantages that the safety is high, all the components are from natural plants or microorganisms, no chemical pesticide residue exists, the composition is healthy to human bodies and environmentally friendly, and the problems of drug resistance and soil pollution caused by chemical agents can be avoided.

The present invention discloses a chemical agent injection system and method for a deepwater underwater wellhead. The chemical agent injection system includes a chemical agent storage tank, a high-pressure pump group, a plurality of low-pressure pump groups, and a plurality of injection pipelines connecting the oil pipes of the plurality of underwater wellheads; the high-pressure pump group and each of the low-pressure pump groups are connected in parallel between the chemical agent storage tank and a corresponding injection pipeline; before chemical agent injection, the gas column in the injection pipeline is displaced by the high-pressure pump group; after the gas column is displaced, the chemical agent in the chemical agent storage tank is injected into the oil pipe through the injection pipeline by the low-pressure pump group. The chemical agent injection system for a deepwater underwater wellhead of the present invention cooperates with a high-pressure pump group and a plurality of low-pressure pump groups. The high-pressure pump group can be used as a high-pressure displacement pump, which can complete the gas column displacement and agent injection of the plurality of underwater wellheads in the gas field, while reducing the cost investment and also reducing the difficulty of on-site operation.

The invention discloses a multiphase extraction and tail gas and wastewater treatment integrated device and a control method thereof. Comprising at least one set of small multiphase extraction unit connected with an extraction well, an agent box storing a solubilizing agent and an oxidizing agent, a resin adsorption tower, an oil-water separator, a photocatalytic reactor, an oil storage tank, a heating system used for heating the agent box and the oil-water separator and providing high-temperature steam for the resin adsorption tower, and a controller, wherein the medicament box is respectively connected with the extraction well and the photocatalytic reactor, the multiphase extraction unit comprises a gas-liquid separator, a water ring vacuum pump and a jet pump, the extracted gas-liquid mixture is subjected to gas-liquid separation through the gas-liquid separator, waste gas is conveyed to the resin adsorption tower through the water ring vacuum pump, and the resin adsorption tower is used for adsorbing the waste gas. Waste liquid and the extracted oil-water mixture are conveyed to the oil-water separator through the jet pump, waste water is conveyed to the photocatalytic reactor, and waste oil is conveyed to the oil storage tank. According to the invention, miniaturization is realized, and meanwhile, the stability and high efficiency of removal efficiency are effectively guaranteed.

The invention relates to the technical field of water treatment, provides a chemical adding control scheme, and particularly relates to a chemical adding control method and system for a chemical for water treatment. Water quality data about to-be-treated water is obtained by predicting the water quality of inlet water, the water quality data is used as key parameters to obtain a corresponding agent feeding predicted amount, and a feedback control weight and a feedforward control weight are determined based on the predicted amount and changes of water body target data and water quality conditions in the agent feeding process; and combining the feedback control weight and the feed-forward control weight to obtain the dosing control quantity. According to the control method provided by the embodiment of the invention, the control quantity can be accurately determined based on the condition of the water quality and the overall environment change of the water treatment system, compared with a single control logic in the prior art, the accuracy of overall control is improved, and the problems of a complicated water treatment system and inaccurate environment control can be solved.

According to the method for effectively removing the spartina alterniflora, deep digging and layered inverted burying are conducted on the spartina alterniflora in a treatment area, it is ensured that overground parts and shallow surface plants are all integrally inverted and buried in soil which is 140 cm or below away from the ground, the plants are isolated from light and air, and the effect of removing the spartina alterniflora is achieved. Then the underground part is integrally inversely buried above the inversely buried overground part, the overground part is thoroughly covered, deep isolation is ensured, the regeneration capacity of the overground part is fundamentally blocked, and thorough deep digging and layered inversely buried burying of the spartina alterniflora in the whole treatment area are sequentially and progressively completed. The method does not need to use chemical agents, is environmentally friendly, easy and convenient to operate, high in durability and suitable for ecological management of large-area beach wetlands, effectively restrains rejuvenation of spartina alterniflora and maintains ecological balance.