60 results about "Calcium hypochlorite" patented technology

The invention discloses an automatic reaction control method and system for production of calcium test powder based on a deep learning neural network, and belongs to the technical field of chemical automation. The invention discloses a test powder production automatic reaction control method based on a deep learning neural network. The method comprises the following steps: data acquisition, picture preprocessing, deep learning model training, model verification and debugging, model storage and weight reduction, real-time prediction and automatic reaction control. The automatic reaction control system for the production of the high test bleaching powder based on the deep learning neural network comprises a data acquisition module, a reaction stage automatic judgment module, a process control parameter automatic optimization module and a DCS (Distributed Control System) control module. According to the invention, the real-time microscopic observation picture of the chlorination reaction can be uploaded in real time; and predicting the current reaction stage according to the picture and outputting process control parameters to realize full-automatic reaction control of the production of the high test powder.

Dosing device for dosing a calcium hypochlorite solution or a calcium hypochlorite suspension into a water system, in particular swimming pool water, comprising a dosing pump (9) and a dosing line (6) connected to the dosing pump (9) and the water system, wherein the dosing line (6) has a first line section (6a) which is oriented at least substantially vertically, and the dosing pump (9) is connectable to a mixing tank (1) or a storage tank for the calcium hypochlorite solution or suspension in order to pump the calcium hypochlorite solution or suspension into the dosing line (6), characterized in that the dosing pump (9) is connected to the first line section (6a) of the dosing line (6) via a supply line (5) which is at least partially non-vertical, wherein a collecting device (60) is immediately connected downwards to the first line section (6a).which includes a collection container (61) connected to the first pipe section (6a) and / or a second pipe section (6b) that is directly connected to the first pipe section (6a) and does not run vertically at least in sections.

The invention relates to the technical field of chemical production, in particular to a control method for a main reaction device of calcium hypochlorite based on reaction variable monitoring. The future particle agglomeration state is predicted through a particle agglomeration time sequence state prediction model, a state hot spot chromaticity diagram of actual particle agglomeration is interpolated according to prediction result space chromaticity, and the stirring rate and an air escape valve of a bleaching powder main reaction device are controlled based on the state hot spot chromaticity diagram; and constructing a gas generation quantitative hash table when the side reaction occurs, performing hash accumulation on the gas generated when the side reaction occurs in the main reaction component by using the gas generation quantitative hash table, and analyzing the reaction temperature of the control device according to the hash accumulation result. According to the invention, the main reaction device can be subjected to stirring, gas leakage and accurate control of reaction temperature according to particle agglomeration and gas dissipation phenomena in the production process of the high test bleaching powder, so that the production safety and efficiency of the main reaction device of the high test bleaching powder are improved.

The utility model discloses a calcium hypochlorite drying device which is characterized in that a drying bin is arranged on the upper portion of an air inlet bin, a flow guide cover is arranged on the top of the drying bin, a flow guide pipeline is connected to the flow guide cover, and materials are directly guided into external packaging equipment through the flow guide pipeline; a scattering bin is arranged in the air inlet bin and connected with the drying bin, a bottom end conical cap is arranged in the scattering bin, a rotating frame is arranged on the periphery of the bottom end conical cap, an external expansion scattering plate is arranged on the rotating frame, and a lower protrusion is arranged on the external expansion scattering plate; a top scattering plate is arranged on the upper portion of the bottom end conical cap, and an upper protrusion is arranged at the end of the top scattering plate. Through mutual cooperation of the rotating frame, the external expansion scattering plate and the top scattering plate, blocky or granular materials are efficiently smashed, high-temperature airflow is used for drying while smashing is conducted, and the dried materials are blown into external packaging equipment.

A formulation delivery system for use with an outdoor cleaning device is provided. The formulation delivery system has a composition containing chlorine, wherein the composition is in the form of a solid chemical component, and the outdoor cleaning device is a spray bar that houses the composition. The chlorine is selected from the group consisting of calcium hypochlorite, 1,3,5-triazine-2,4,6(1H,3H,5H)-trione, 1,3-dichloro-sodium salt, dihydrate (dichloroisocyanuric acid), 1,3,5-trichloro-1,3,5-triazinane-2,4,6-trione (trichloroisocyanuric acid), chloramine-T hydrate, and combinations thereof. A spray bar is also provided that has a refill cartridge for housing the composition in solid form.

The application provides a heavy metal capturing agent biochemical inhibition recovery medicament, a preparation method and application thereof, and relates to the field of sewage treatment. The heavy metal capturing agent biochemical inhibition recovery medicament comprises the following components in parts by weight: anionic polyacrylamide 1-5 parts, hydroxyapatite 2-13 parts, zinc salt 5-10 parts, aluminum salt 15-30 parts, nickel salt 1-5 parts, copper salt 1-10 parts, calcium hypochlorite 0.5-3 parts and biocompatible solute 20-50 parts. The medicament formula provided by the application can effectively eliminate the problem that the sludge activity of a biochemical system is inhibited due to the conventional heavy metal capturing agent contained in the influent of a sewage plant, and has the characteristics of high efficiency, convenient operation and quick recovery of the nitrification capacity of the biochemical system. The heavy metal capturing agent biochemical inhibition recovery medicament provided by the application can be directly added at different points of contact between the sewage plant and the activated sludge, and the operation is flexible and convenient, and the original process operation parameters do not need to be adjusted.

This invention discloses a drying device for calcium hypochlorite production, relating to the field of calcium hypochlorite production technology. The technical solution includes a drying shell with a drying mechanism inside and a material conveying and preheating mechanism at the top. The drying mechanism includes a square rod located inside the drying shell, with both ends connected to the inner walls of the drying shell via bearings. A second motor is fixedly mounted on one side of the drying shell, with its output end fixedly connected to the square rod. Two drying components are located outside the square rod, each including a rotating sleeve fitted around the square rod and slidably connected to it. Multiple rotating plates are fixedly connected to the outside of the rotating sleeve. A cylinder and side circular plates are fitted around the rotating sleeve, and the rotating sleeve is rotatably connected to the side circular plates and cylinder. An opening is provided on one side of the cylinder to facilitate the drying of calcium hypochlorite, resulting in high drying efficiency and uniform drying.

The present invention relates to the technical field of sludge treatment, and specifically relates to a method for reducing resistance genes in activated sludge, comprising the following steps: S1. Loading ferrate on bentonite: obtaining bentonite powder loaded with ferrate; S2. Modifying bentonite: obtaining nickel-modified bentonite; S3. Pretreating sludge: mixing the sludge with calcium hypochlorite; S4. Deep-treating sludge: adding nickel-modified bentonite to the pretreated sludge. The present invention forms a synergistic purification system of ferrate-nickel-calcium hypochlorite. Among them, ferrate has been proven to have a good effect on reducing RAGs, and attaching to bentonite with a high specific surface area can further improve its effect. The nickel-modified bentonite has a significant inhibitory effect on the activity of the microbial community, especially when the sludge is pretreated with calcium hypochlorite, this effect is more obvious, and finally the removal rate of RAGs can reach a relatively high level.

The present invention discloses a pyrite flotation separation combined inhibitor and its application, and belongs to the field of mineral processing technology. The pyrite flotation separation combined inhibitor of the present invention comprises gardenia yellow and inhibitor A; the inhibitor A is one of lime, sodium sulfite, and calcium hypochlorite. The combined inhibitor selectively inhibits pyrite and has no inhibitory effect on chalcopyrite. Therefore, the pyrite flotation separation combined inhibitor is applied to the flotation of copper sulfide ores. At the same time, the present invention adopts a branched series flow process to artificially improve the grade of the selected product, improve the sorting process, and save drug consumption and energy consumption. The present invention combines the combined inhibitor, combined collector and process flow to achieve effective separation of chalcopyrite and pyrite, and improve the indicators of copper sulfide ores.

The application discloses a kind of iron wurtzite and sulphide iron ore mineral asynchronous flotation separation method, belong to nonferrous metal sulphide mineral flotation technical field;The application promotes the flotation of iron wurtzite by slurry aeration, realizes the asynchronous flotation of iron wurtzite, pyrite and pyrrhotite by means of high selectivity collector CTB-2 and oxidant calcium hypochlorite, solves the problem of difficult separation of iron wurtzite and pyrrhotite, and uses high concentration copper sulfate as depressor to rapidly improve the grade of zinc concentrate, uses ferrous sulfate to realize the sulfur-free flotation of sulfur concentrate, and finally obtains high-quality zinc concentrate, first sulfur concentrate (pyrite) and second sulfur concentrate (pyrrhotite) products.The application optimizes and simplifies the beneficiation process, cancels the magnetic separation step in the traditional process, and realizes efficient separation of zinc and sulfur through single flotation method.

System for dosing calcium hypochlorite into a water system, in particular into swimming pool water, comprising a mixing system (M) in which an aqueous calcium hypochlorite solution or suspension is produced by adding a solid composition containing calcium hypochlorite to process water, and a dosing device (5) for the dosed introduction of the aqueous calcium hypochlorite solution or suspension into the water system, characterized in that the process water, before the addition of the composition, is passed through a container (4) or a flow-through fitting containing granules of a medium which causes catalytic precipitation of hardness-forming ions dissolved in the process water by forming seed crystals, in particular calcium carbonate and / or magnesium carbonate crystals.

The invention discloses a modified cellulose acetate dialysis membrane and a preparation method thereof.The preparation method comprises the following steps that after a cellulose acetate membrane is hydrolyzed for 1 min, the acetyl part of the cellulose acetate membrane is removed, then the cellulose acetate membrane with the acetyl part removed is subjected to an oxidation reaction, and the cellulose acetate membrane with the acetyl part removed is obtained; a selective oxidation catalyst A and / or a co-catalyst B are / is used in the oxidation reaction process, and an oxidant C is one of sodium hypochlorite, sodium chlorite, calcium hypochlorite, hydrogen peroxide, persulfate or sodium periodate; and then adding chitosan which is subjected to crosslinking modification by dialdehyde cellulose to carry out grafting reaction. According to the method, the grafting effect can be optimal only through the synergistic cooperation of the carboxyl active site amount and the crosslinking degree of the chitosan, and the urea adsorption capacity and the blood compatibility of the cellulose acetate membrane are remarkably improved.

The present invention relates to a method for dewatering sludge and recovering nitrogen and phosphorus from a filtrate. The method utilizes ferrous sulfate-activated calcium hypochlorite and tannic acid to jointly condition the sludge to enhance sludge dewatering performance. After dewatering, activated serpentine is added to the dewatered filtrate to achieve nitrogen and phosphorus resource recovery. The method may include the following steps: 1. adding ferrous sulfate and calcium hypochlorite to the sludge and mixing and conditioning; 2. adding tannic acid to the sludge mixture conditioned by the addition of ferrous sulfate and calcium hypochlorite and mixing and conditioning; 3. performing dewatering to obtain dewatered sludge and a dewatered filtrate; 4. adding activated serpentine to the dewatered filtrate to generate nitrogen and phosphorus-containing solids; and 5. recovering the nitrogen and phosphorus-containing solids from the dewatered filtrate. The method can effectively achieve dewatering performance enhancement coupled with nitrogen and phosphorus resource recovery, and can be used for integrated sludge treatment to reduce and recycle difficult-to-treat sludge, such as sewage plant maintenance sludge.

The invention belongs to the technical field of mineral processing, and aims to solve the problem that flotation of high-carbon high-iron high-mud lead-zinc ore is difficult due to coexistence of carbonaceous substances, iron minerals and mud substances. The invention discloses a lead separation process for high-carbon, high-iron and high-mud lead-zinc ore difficult to separate, and aims to solve the problem that flotation is difficult due to coexistence of carbonaceous substances (such as organic carbon, graphite and the like), iron minerals (such as hematite and limonite) and muddy substances (such as phyllite, biotite and clay) of the high-carbon, high-iron and high-mud lead-zinc ore. The use amount of an inhibitor is reduced through mixing of carbon and iron mud and coarse scavenging, step-by-step inhibition of inhibition mechanisms of calcium hypochlorite, carboxymethyl cellulose and corn starch is combined, and efficient recovery of lead minerals is achieved through a different-speed concentration and multiple purification technology. According to the technology, the lead concentrate grade reaches 45% or above, and the zinc inclusion rate is 1t; the comprehensive recovery rate is increased by more than 10%, and the method has remarkable economic benefits and environmental benefits.

The invention provides impregnated bond paper with mildew-proof, antibacterial and antiviral effects and a preparation process of the impregnated bond paper. The impregnated bond paper is prepared from the following raw materials in percentage by weight: 0.8 to 1.4 percent of plant extract, 45 to 57 percent of film-forming resin, 1 to 1.5 percent of calcium peroxide, 1 to 1.5 percent of protamine, 0.5 to 0.8 percent of capsid protein, 0.3 to 0.5 percent of oligosaccharide chain protein, 3 to 4 percent of nano sepiolite, 0.8 to 1.2 percent of calcium hypochlorite, 0.1 to 0.2 percent of silver-loaded nanoparticles, 6 to 8 percent of slow-release carrier, 0.6 to 0.8 percent of photoinitiator, 0.3 to 0.5 percent of surfactant, 3 to 4 percent of plasticizer, 0.1 to 0.2 percent of curing agent, 0.2 to 0.3 percent of dispersing agent and 0.2 to 0.4 percent of cross-linking agent. The anti-static coating comprises the following components in percentage by weight: 0.2-0.3% of a moisture-proof agent, 0.2-0.4% of an antioxidant, 0.1-0.3% Through cooperation of the components, the impregnated bond paper has good mildew-proof, antibacterial, antiviral and other comprehensive properties, the probability of bacterial infection and virus infection is reduced, and the practicability and safety of the impregnated bond paper applied to a floor heating environment, a humid area (such as a bathroom cabinet) or a decorative plate of a medical facility are improved.

The application belongs to the technical field of solid waste resource processing, and specifically discloses a solidification treatment agent for electrolytic cell overhaul slag and a resource processing method. The solidification treatment agent is composed of calcium chloride, calcium hypochlorite, cement and gypsum in a mass ratio of (1-1.2):(5-6):(2-3):(1-2). The processing method comprises the following steps: grinding and grading and sorting electrolytic cell overhaul slag to obtain carbon-rich material and electrolyte-fire-resistant material mixture; adding water to the solidification treatment agent to prepare a suspension, adding the mixture into the suspension at 45-61% of the mass of the overhaul slag, and stirring and reacting to realize harmless solidification. The solidification treatment agent can comprehensively and harmlessly dispose of fluorides and cyanides in the overhaul slag, has a long-lasting solidification and stabilization effect, and is low in cost. The processing method realizes resource recycling of carbonaceous materials through grading and sorting, and the remaining mixture is safe and stable after being solidified by the solidification treatment agent. The process is simple and easy to implement industrially, and gives consideration to resource recycling, harmless disposal and economy, and is suitable for large-scale safe disposal and resource utilization of electrolytic cell overhaul slag.

The utility model relates to a bleaching liquid dechlorination device in calcium hypochlorite production, which comprises a reduction kettle, a vacuum dechlorination tower and a tail gas alkali absorption tower, an inlet of the reduction kettle is communicated with a bleaching liquid source in the calcium hypochlorite production, and a liquid outlet of the reduction kettle is communicated with an inlet of the vacuum dechlorination tower. The exhaust port is communicated with the inlet of the tail gas alkali absorption tower, and the hydrochloric acid feeding port is communicated with an external hydrochloric acid source; an outlet of the vacuum dechlorination tower is communicated with an inlet of the tail gas alkali absorption tower; an alkali liquor feeding port of the tail gas alkali absorption tower is communicated with an external alkali liquor source, an outlet of the tail gas alkali absorption tower is communicated with a chimney, and a liquor outlet of the tail gas alkali absorption tower is communicated to a calcium hypochlorite production line. The device can effectively improve the dechlorination effect of the bleaching liquid, simplify the process flow, reduce manual intervention, lower the production cost and improve the economic benefit.

The application provides a metal ore dressing wastewater processing method and device, and relates to the technical field of wastewater treatment. The metal ore dressing wastewater processing method comprises the following steps: step S1, rapid oxidation treatment, in the first stage, 60% of the total amount of calcium hypochlorite and phosphate are added to the wastewater and stirred to generate first-stage wastewater; step S2, deep oxidation treatment, in the second stage, 40% of the total amount of calcium hypochlorite is added to the first-stage wastewater and stirred to generate second-stage wastewater. A wastewater pretreatment device is used for the first stage of wastewater treatment in the metal ore dressing wastewater processing method. According to the scheme, efficient oxidation of ammonia nitrogen is realized by two-stage calcium hypochlorite addition, and Ca 2+ PO4 3+ Hydroxyapatite is generated to fix heavy metals, residual reagents are simultaneously controlled, and the treated water can be directly used for the flotation process.

The application discloses a method for activating and converting calcium salt of waste lithium iron phosphate battery material and high-value utilization, which comprises the following steps: calcium salt activation, iron-lithium fine separation, compound transformation and forming maintenance, adopting chemical properties stable oxidizing calcium salt such as calcium hypochlorite or super calcium oxide to assist mechanical chemical activation to strengthen lithium iron phosphate phase deconstruction, then through dilute sulfuric acid system to strengthen lithium element selective leaching, and simultaneously realize directional enrichment of phosphorus, iron elements and calcium, sulfur elements introduced into the system, not only shorten the process, but also reduce the tail liquid disposal cost caused by repeated addition of chemical reagents to adjust pH in the leaching liquid and reduce the loss of lithium elements, which is environment-friendly in operation, high in lithium element recovery rate, and beneficial to industrial application and popularization, and has remarkable economic benefits.

The present invention provides a preparation method of calcium phosphate-based sludge carbon for in situ cultivation of continuous flow aerobic granular sludge. Phosphoric acid and calcium hypochlorite are used to treat the sludge carbon. The calcium phosphate-based sludge carbon has surface wrinkles, a large number of oxygen-containing functional groups and a lower Zeta potential. The addition of calcium phosphate-based sludge carbon and regular sludge discharge measures are combined to regulate and induce the rapid in situ formation of continuous flow aerobic granular sludge, which is conducive to the promotion and application of the continuous flow aerobic granular sludge process, shortens the formation time of the continuous flow aerobic granular sludge, provides a new way for the cultivation of continuous flow aerobic granular sludge, and solves the theoretical and technical bottlenecks of the application of aerobic granular sludge.

The utility model relates to a calcium hypochlorite factory automatic production device which comprises a sodium reaction kettle, a calcium reaction kettle and a comprehensive reaction kettle, and the sodium reaction kettle is provided with a sodium hydroxide pipeline, a mother liquor pipeline and a chlorine pipeline; the calcium reaction kettle is provided with a calcium hydroxide pipeline, a mother liquor pipeline and a chlorine pipeline; the comprehensive reaction kettle is provided with a chlorine pipeline, a process water pipeline and a burdening liquid pipeline; the chlorine pipeline is provided with a flow meter, a regulating valve and a switch valve; the sodium hydroxide pipeline is provided with a flow meter and a switch valve; the calcium hydroxide pipeline is provided with a flow meter and a switch valve; the mother liquor pipeline is provided with a flow meter and a switch valve; a discharge pipe of the sodium reaction kettle and a discharge pipe of the calcium reaction kettle are respectively communicated with an inlet of the batching tank; an outlet of the batching tank is communicated with the batching liquid pipeline; a discharge pipe of the comprehensive reaction kettle is connected with a next working section; the flow meter, the adjusting valve and the switch valve are all electrically connected with the control system, and automatic production can be achieved.

The utility model discloses a calcium hypochlorite reaction device convenient to recycle tail gas, and particularly relates to the technical field of reaction devices.The calcium hypochlorite reaction device comprises a stirring box, a stirring mechanism and a gas inlet mechanism are arranged in the stirring box, the stirring mechanism is located above the gas inlet mechanism, and a recycling mechanism is arranged on one side of the stirring box; a transmission box is arranged at the top of the stirring box, a transmission assembly is arranged in the transmission box, and the air inlet mechanism comprises an air delivery pump arranged on one side of the stirring box and an air supply piece fixedly connected to the inner wall of the stirring box. The gas inlet mechanism is arranged, so that gas entering the stirring box can be sprayed out from the stirring box to four directions along the gas supply sheet and the gas dispersing pipe and is in full contact with liquid in the stirring box, and the stirring mechanism and the transmission assembly are arranged, so that the reaction is more sufficient, and the reaction efficiency is improved; and only one motor is used for driving the two rotating rods to rotate, so that the cost of the device is saved.

The invention relates to a process for the synthesis of the compound 5,7-diiodo-1-oxaspiro[2,5]octa-4,7-dien-6-one. This process for the synthesis of the compound 5,7-diiodo-1-oxaspiro[2,5]octa-4,7-dien-6-one comprises an oxidation reaction of 4-Hydroxy-3,5-diiodobenzyl alcohol with a hypochlorite oxidant, in particular selected from sodium, calcium and potassium hypochlorite. This process allows a significant improvement in yield in a simple and inexpensive manner.

The invention relates to a novel deodorant for removing formaldehyde, hydrogen sulfide and ammonia and application thereof in deodorant spray. The novel deodorant contains a plant source deodorant, a disinfectant, a biological desulfurizer, sesame oil, a buffer solution and a propellant, wherein the biological source deodorant is selected from one or more of tea polyphenol, a folium eucalypti extract, a bamboo leaf extract, peroxidase, tannic acid or plant straw fermentation liquor; the disinfectant is selected from one or more of potassium hypochlorite, calcium hypochlorite, glutaraldehyde, benzalkonium bromide or hydrogen peroxide; the biological desulfurizing agent is selected from one or more of hydrogen sulfide oxidase, thiocyanate enzyme, Mn / Ce-HMS, CuO-CaCO / BC, Zn-Mn / KIT-1 and sulfur oxidizing bacteria / ceramic carriers. Through the synergistic effect of a chemical method and a biological enzyme method, various harmful ingredients such as formaldehyde, ammonia and hydrogen sulfide are efficiently removed and decomposed at a time, environmental pollution is reduced, meanwhile, the disinfection and sterilization effects are achieved, operation is easy, and the deodorant spray has wide application prospects in deodorant spray.

Disclosed is a process for removing impurities from an intermediate product in battery material production including a) contacting a first intermediate product with a first aqueous medium to obtain a second intermediate product; and b) contacting the second intermediate product with a stream of a second aqueous medium until a conductivity of the stream of the second aqueous medium after contacting the second intermediate product is below about 1,000 micro-Siemens per centimeter (μS / cm).

The invention relates to the technical field of dangerous waste recycling, in particular to an electrolytic aluminum carbon slag overhaul slag recycling cooperative treatment process. According to the synergistic treatment process for the electrolytic aluminum carbon residues and the overhaul residues, hazardous wastes are converted into carbon powder, regenerated electrolyte, industrial salt, lithium carbonate and a high-value deoxidizer through the technologies of multi-stage crushing, flotation-leaching coupling, gradient oxidation cyanogen removal, dynamic fluorine fixation and directional aluminum and lithium recovery. Calcium hypochlorite-hydrogen peroxide synergistic oxidation, PAC acidification hydrolysis aluminum recovery and a crude calcium fluoride deoxidizing agent formula are creatively utilized, and the cyanide removal rate gt is achieved; the lithium recovery rate is larger than or equal to 93%, the crude calcium fluoride is directly used for iron and steel smelting, and the use amount of fluorite is reduced by 20%. The method has environment-friendly compliance and economic benefits, and is suitable for recycling and upgrading of hazardous wastes in the electrolytic aluminum industry.

This invention pertains to feeding equipment, and more specifically to the field of calcium hypochlorite preparation. The invention discloses a quantitative feeding device for calcium hypochlorite preparation, comprising a base. Both sides of a first hydraulic cylinder are connected to a first feeding pipe via connecting rods. One of the first feeding pipes passes through a feeding port. A first piston is slidably connected inside the first hydraulic cylinder, passing through the bottom of the first hydraulic cylinder and connected to a moving plate. Second feeding pipes are symmetrically fixed on both sides of the moving plate, and the second feeding pipes are slidably connected to the inner sides of the first feeding pipes. In this quantitative feeding device for calcium hypochlorite preparation, the second feeding pipes extend and retract relative to the first feeding pipes, facilitating adjustment of the overall capacity of the first and second feeding pipes to achieve quantitative feeding. A stirring rod rotates while moving downwards and extending into the left side of both the first and second feeding pipes, facilitating unblocking and preventing material blockage.

The present application relates to the field of sludge resource utilization, in particular to the technical field of sludge resource treatment method under low-carbon mode, more specifically to a method for improving the anaerobic digestion efficiency of residual sludge under low-carbon mode. The residual sludge is pretreated by calcium hypochlorite combined with low-temperature hydrolysis, which can significantly improve the anaerobic digestion efficiency. According to the calculation, the anaerobic digestion soluble COD of the treated residual sludge is 11.20 times higher than that of the blank group, the cumulative methane yield is increased by 163.9%, and the maximum methane production rate is increased by 158.8%. The daily methane production is increased by 57.9% compared with the blank group. The unit methane carbon emission is reduced by 45.6% compared with the blank group.

The application discloses a method for removing chlorine from a zinc sulfate solution containing chlorine by using ozone or ozone air, and ozone or ozone air generated by an ozone generator is introduced into a closed pressure-adjustable container containing the zinc sulfate solution containing chlorine, and oxidation dechlorination is carried out in the container at normal temperature or under the natural temperature condition of the solution; low-chlorine zinc sulfate solution and mixed waste gas containing oxygen and chlorine gas are obtained; the mixed waste gas is introduced into saturated limewater or a sodium alkali solution, and chemical products of sodium hypochlorite or calcium hypochlorite are obtained. The application adopts ozone or ozone air to remove chlorine from the zinc sulfate solution containing chlorine, and has the advantages of simple process, high dechlorination efficiency, comprehensive recovery of chemical products of calcium hypochlorite or sodium hypochlorite for reuse or sale, less waste, no sodium chloride accumulation, and good social and economic benefits.

The invention relates to the technical field of preparation and mixing of calcium hypochlorite, and discloses mixing equipment for preparation of calcium hypochlorite, the mixing equipment comprises a mixing barrel, one side of a gear is in meshed connection with a rotating column, the rotating column penetrates through the top of the mixing barrel, first oil cylinders are symmetrically fixed to the two sides of the rotating column, and first pistons are slidably connected into the first oil cylinders; a scraping plate is fixed to the outer side of the first piston, stirring blades are symmetrically fixed to the two sides of the rotating column, and a pumping mechanism is fixed to the bottom of the mixing barrel and communicates with the mixing mechanism. According to the mixing equipment for preparing calcium hypochlorite, calcium hydroxide is sprayed out through spraying holes, chlorine is introduced into the mixing barrel, stirring blades rotate along with a rotating column, calcium hydroxide and chlorine are conveniently and fully mixed together, and due to the special structure of an extrusion ring, a parabola formed by calcium hydroxide sprayed out through the spraying holes is larger and larger, so that the calcium hypochlorite is more and more stable. And the calcium hydroxide is more fully contacted with the mixed chlorine.