34results about How to "High chlorine removal efficiency" patented technology

The invention discloses a method for removing Cl from copper sulfate solution. The method for removing Cl from the copper sulfate solution comprises the following steps that 1, the pH value of the copper sulfate solution is adjusted to 1-1.5; and 2, cuprous oxide powders are added into the copper sulfate solution, the reaction pH value is controlled to be 1-2, and the solid-liquid separation is carried out after the precipitation reaction to obtain a dechlorinated copper sulfate solution and dechlorination slags. According to the method for removing Cl from the copper sulfate solution, throughthe pH value adjustment of the copper sulfate solution and the control of a specific reaction system, the efficient removal of Cl in the copper sulfate solution is achieved, the method is suitable for removing chloride ions from copper sulfate solution with chloride ion concentration of 0.01-20g / L, and the chloride ion concentration after removing the chloride ions is controlled at 50 mg / L or below. The method for removing Cl from the copper sulfate solution has the advantages of being stable in a dechlorination effect, high in dechlorination efficiency, simple in technical operation, free ofwaste water and waste gas generation and the like, and can be widely applied to the purification of copper sulfate solutions which are recycled in the production of electrodeposited copper and cupricsulfate purified products.

The invention discloses a method for removing chlorine from a zinc sulfate solution. The method comprises the following steps that concentrated sulfuric acid is added into the zinc sulfate solution toadjust the pH value; ascorbic acid is added, then cuprous oxide is added for dechlorination treatment to form a cuprous chloride precipitate, filtering is carried out, and then a filtrate is taken for later use; the cuprous chloride precipitate is washed by using absolute ethyl alcohol, and the washing liquid and the filtrate are combined to obtain a mixed solution; an equal volume of organic amine is added into the mixed solution, extraction is carried out, and standing and layering are carried out so as to obtain a zinc sulfate solution with the chlorine removed and a chlorine-rich organicphase; and a reverse extraction agent is used for reversely extracting the chlorine-rich organic phase, so that the chlorine and the organic phase are separated. According to the method, chlorine ionsin the zinc sulfate solution are effectively removed, the dechlorination efficiency is high, the process is simple, and the chlorine removal cost is reduced.

The invention discloses a method for removing chloride ion from lixivium of zinc hydrometallurgy. The method for removing the chloride ion from the lixivium of zinc hydrometallurgy includes steps that 1, detecting the concentration of the chloride ion and concentration of copper ion in the lixivium of zinc hydrometallurgy; 2, analyzing the copper ion concentration of the step 1; 3, adding copper slag to the lixivium of zinc hydrometallurgy to obtain slurry; 4, filling reductive gas to the slurry to enable the chloride ion to form sediment; 5, detecting the oxidation reduction potential of the slurry, if the oxidation reduction potential meets the demand, stopping filling reductive gas, and filtering to obtain the lixivium of zinc hydrometallurgy without chloride ion; otherwise, returning to the step 4. The method for removing the chloride ion from the lixivium of zinc hydrometallurgy is featured with short flow, low cost and high chloride removing efficiency, other impurities are not led in, the original zinc hydrometallurgy technique is kept, and the popularization value is high.

The invention discloses a method for removing chloride ions in an electrolytic manganese solution. An R-Bi2O3 antichlor is added in an electrolytic manganese anode solution with the sulfur acid content being 30-40 g / l, stirring is conducted for 20-30 min, slurrying is conducted, slurry is added in a to-be-treated electrolytic manganese solution, and after sufficient stirring is conducted for 40-60min at the temperature ranging from 40 DEG C to 60 DEG C and with the stirring rate being 60 r / min, filtering is conducted; filter liquor is injected into a qualified liquid system, and metal manganese is obtained through electrolysis; R in the R-Bi2O3 antichlor is silicon dioxide and manganese oxide, and the adding mass of the R-Bi2O3 antichlor is 10-15 times of the mass of the chloride ions inthe electrolytic manganese solution; and removed filter slag is sequentially subjected to washing and filtering, the removed chloride slag is subjected to alkaline washing for dissolving and dechlorinating through alkaline liquor, filtering is conducted, the filter slag obtained after filtering is sequentially washed and filtered and then is added in a chloride slag removing acidification tank tobe recycled. By means of the method, chloride can be effectively and rapidly removed, the antichlor can be circularly reutilized, and cost is low.

The invention discloses a dechlorination system for co-processing washing fly ash by a cement kiln and a dechlorination method. The dechlorination system is characterized in that an air taking device communicates with a feed-end chamber in a kiln system, an air outlet of a circulating fan communicates with an air outlet of the air taking device and an air inlet of a heat exchanger, and the air outlet of the air taking device further communicates with an air inlet of a lower-layer cyclone separator; an air outlet of the lower-layer cyclone separator communicates with an air inlet of an upper-layer cyclone separator, an ash falling opening of the upper-layer cyclone separator communicates with the air inlet of the lower-layer cyclone separator, and an air outlet of the upper-layer cyclone separator communicates with the air inlet of the heat exchanger; and an air outlet of the heat exchanger communicates with an air inlet of a cooler, an air outlet of the cooler communicates with an air inlet of a bag type dust collector, and an air outlet of the bag type dust collector communicates with air inlets of an induced draft fan and a circulating fan correspondingly. The dechlorination system and the dechlorination method improves the dechlorination efficiency, and achieve zero emission.

The invention relates to a dechlorination material in water treatment as well as preparation and use methods thereof. The dechlorination material is formed by mixing a compound (I), an adhesive and vitamin H together, the compound (I) is shown as the formula above. The preparation method comprises the following steps of: dissolving the adhesive into solvent to form colloidal fluid; adding the compound and vitamin H slowly into the colloidal fluid and stirring evenly for forming floury materials; granulating with a granulator or granulating by manually rubbing with a mesh sieve to make wet particles; and placing the wet particles into an oven for drying to make the dechlorination material. The invention has the advantages that the dechlorination material is a redox system of disordered non crystalline structure, has large void ratio, strong exchanging ability and long releasing period, can be used for specially treating residual chlorine in water with residual chlorine removing efficiency above 99 percent, and can be used for removing residual chlorine, iodine in tap water as well as other halogen elements, thereby achieving the aim of purification.

The invention discloses a device for monitoring the concentration of chloride ions in reinforced concrete and automatically removing chlorine, which comprises a chloride ion concentration monitoring device and an electrochemical dechlorination device, and is characterized in that the chloride ion concentration monitoring device is used for monitoring the concentration of chloride ions in the concrete, and the electrochemical dechlorination device performs dechlorination according to the chloride ion concentration monitored by the chloride ion concentration monitoring device, and controls the concentration of the chloride ions in the concrete within a given concentration range. According to the invention, the concentration of the chloride ions in the concrete can be monitored in real time,and the chloride ion concentration is controlled within a given concentration range through the automatic dechlorination device. The device has the characteristics of being simple in structure, good in dechlorination performance, capable of being repeatedly used, low in cost and low in energy consumption.

The invention discloses a whole-course recycling sea sand impurity removal and chlorine removal system which comprises a screening unit, a cleaning and showering unit, an impurity separation unit, an ultrasonic generator, an alkaline potential water generator, a low-pressure ozone generation array pile, a linear vibration conveying and water screening unit, a flocculation basin, a filter press, a water collection tank, a reverse osmosis treatment tank, a sun-drying evaporator and a strong brine collection unit, and the system further comprises a caulking brick production unit and a mixing water collection unit. The system has good chlorine removal and impurity removal effects on sea sand, the chlorine content of the treated sea sand can be reduced to 0.0015%, chloride ion slow release is permanently avoided, and the sea sand reaches and exceeds the fresh water sand standard; and waste liquid and solid waste generated in the operation process of the system can be recycled, no pollution is caused to the environment, the sea sand treatment capacity can reach 300-600 tons per hour, and the economic benefit is remarkable.

The invention discloses a method for removing chloride ions in desulfurization wastewater. Calcium aluminate is added to the desulfurization wastewater for pretreatment, and after the primary precipitation is removed, calcium hydroxide and aluminum powder are added, and the pH is adjusted to alkali. Then, ultrasonic treatment is carried out, and then secondary precipitation is generated by heat treatment, and the secondary precipitation is removed. The invention is not only suitable for the removal of chloride ions in a large amount of waste water, but also can effectively reduce the cost of chlorine removal.

The present invention discloses one kind of chlorine collecting agent and its preparation process. The chlorine collecting agent is prepared with calcium hydroxide, surfactant, filming drier, diluent and sodium silicate. It has high chlorine eliminating efficiency, waterproof and moistureproof property, no caking, high air permeability and other advantages. It is used in absorbing and eliminating chlorine in various kinds of production fields, such as chloralkali plant, papermaking mill, textile mill, sewage treating yard, etc.

The invention provides a method for removing chloride ions from the leaching solution of zinc hydrometallurgy, comprising the following steps: 1. detecting the concentration of chloride ions and the concentration of copper ions in the leaching solution of zinc hydrometallurgy; Analyze the copper ion concentration obtained; 3. Add copper slag to the zinc hydrometallurgy leaching solution to obtain a slurry; 4. Then feed reducing gas into the slurry to make chloride ions form precipitation; 5. Detect the concentration of the slurry Oxidation-reduction potential, if meet the requirements, then stop feeding the reducing gas, filter to obtain the hydro-smelting zinc leaching solution from which chloride ions have been removed; otherwise, return to step 4. The invention has the characteristics of short process, low cost, high chlorine removal efficiency, no introduction of other impurities, maintaining the original zinc hydrometallurgy process, etc., and has wide popularization value.

The invention discloses a method for increasing the value of zinc smelting intermediate materials and synergistically removing chlorine. By adding a certain proportion of low-activity copper slag to silver concentrate for oxidation and roasting, the activity of copper slag is improved, and the chlorine removal efficiency is increased from 30 ‑60% increased substantially to over 85%. The invention solves the problems of low dechlorination efficiency of copper slag alone, high cost of dechlorination of silver chloride and difficult recovery of silver by coupling copper slag and silver concentrate dechlorination technology; meanwhile, silver, copper, The cascade recovery and high-value utilization of valuable metals such as zinc and lead solve the problems of large pollution, high cost and low metal recovery rate in the existing process.

The invention discloses a method for removing chloride ions in an electrolytic manganese solution. An R-Bi2O3 antichlor is added in an electrolytic manganese anode solution with the sulfur acid content being 30-40 g / l, stirring is conducted for 20-30 min, slurrying is conducted, slurry is added in a to-be-treated electrolytic manganese solution, and after sufficient stirring is conducted for 40-60min at the temperature ranging from 40 DEG C to 60 DEG C and with the stirring rate being 60 r / min, filtering is conducted; filter liquor is injected into a qualified liquid system, and metal manganese is obtained through electrolysis; R in the R-Bi2O3 antichlor is silicon dioxide and manganese oxide, and the adding mass of the R-Bi2O3 antichlor is 10-15 times of the mass of the chloride ions inthe electrolytic manganese solution; and removed filter slag is sequentially subjected to washing and filtering, the removed chloride slag is subjected to alkaline washing for dissolving and dechlorinating through alkaline liquor, filtering is conducted, the filter slag obtained after filtering is sequentially washed and filtered and then is added in a chloride slag removing acidification tank tobe recycled. By means of the method, chloride can be effectively and rapidly removed, the antichlor can be circularly reutilized, and cost is low.

The invention relates to a method for removing arsenic and chlorine from polluted acid wastewater of a metallurgical enterprise, to remove arsenic and chlorine in the polluted acid. The steps include: simultaneously adding a certain amount of iron powder and copper sulfate solution to the polluted acid, stirring, and a reaction device After a certain period of time, a precipitate is formed, and solid-liquid separation is carried out to obtain a filtered solution and precipitated impurities; continue to use an ion exchange resin for adsorption and exchange of the filtrate to remove chlorine. According to the method for removing arsenic provided by the present invention, the generation of lime slag is effectively reduced, and the arsenic impurity ions in the polluted acid are effectively removed, and the arsenic removal efficiency is high; the introduction of other impurities is avoided during chlorine removal, and the treated The acid and water can be reused in the workshop, reducing the pollution to the environment; at the same time, avoiding the increase of the overall solution temperature of the polluted acid and reducing the energy consumption in the production process; comprehensively realizing the economic and environmental benefits.

The invention discloses a method for removing chlorine from a zinc sulfate solution. The steps include: adding concentrated sulfuric acid to the zinc sulfate solution to adjust the pH; adding ascorbic acid, and then adding cuprous oxide for chlorine removal treatment to form cuprous chloride precipitates , after filtration, take the filtrate for later use; wash the cuprous chloride precipitate with absolute ethanol, combine the washing solution and the filtrate to obtain a mixed solution; add an equal volume of organic amine to the mixed solution, extract, and stand for stratification to obtain chlorine removal The zinc sulfate solution and the chlorine-rich organic phase; the chlorine-rich organic phase is back-extracted with a stripping agent to separate the chlorine and the organic phase. The method of the invention effectively removes chloride ions in the zinc sulfate solution, has high dechlorination efficiency, simple process, and reduces the cost of chlorine removal.

The invention discloses a method for removing chlorine in an acidic solution. The method comprises adding a chlorine removing agent into an acidic solution containing chlorine and reacting to remove chlorine, obtaining a chlorine removal residue and a chlorine removal liquid, stirring and regenerating the chlorine removal residue with lye And get the residual lye, after dechlorination, use the adsorption material to reclaim the dechlorination agent element remaining therein, after the adsorption is saturated, use the eluent to regenerate, the regenerated adsorption material is recycled, and the obtained eluting rich solution is used in the residual lye And, reclaim bismuth oxychloride slag and / or antimony oxychloride slag and chloride salt solution. The method of the present invention has high chlorine removal efficiency under the chlorine-containing acidic solution system, and can recycle the antimony-bismuth dissolved in the chlorine-removed liquid at low cost and recycle the antimony-bismuth element in a low-cost manner without adding to the stock solution. The introduction of other ingredients only requires a small amount of lye and hydrochloric acid, and the entire system can be circulated through a simple process. The entire process is simple, almost no waste water is generated, and the treatment cost is low.

The invention discloses an ultrasonic defluorination method for whole euphausia superba. After being pretreated, the euphausia superba is soaked in a liquid medium in a working container for ultrasonic defluorination, wherein the euphausia superba is fresh whole euphausia superba, refrigerated whole euphausia superba or dried euphausia superba; the pretreatment is shell softening treatment or unfreezing; the combination type of an ultrasonic treatment device is a single-unit ultrasonic device, a two-unit ultrasonic device or a three-unit ultrasonic device; the liquid medium is a first component, a second component or a third component, the first component is water distilled for three times, deionized water, tap water or seawater, the second component is ethanol, acetone, diethyl ether or No.6 extraction solvent oil, and the third component is an acid solution, alkali solution or salt solution. The technology achieves the purpose of defluorination of the euphausia superba; the defluorinated euphausia superba is kept whole and prevented from breaking, and the sensory quality and the nutritive value are not influenced.

The invention belongs to the technical field of chemical treatment and relates to a method for removing chlorine in the process of zinc electrolysis by an ammonia method. The method includes: firstly,leaching is performed, wherein alkaline leaching is performed on a high-chlorine zinc-containing material with liquid ammonia; secondly, solid liquid separation is performed, wherein leachate is obtained; thirdly, purification is performed, wherein the leachate is subjected to oxidization iron removing and zinc powder replacement, and electrolytic clean liquid is obtained; fourthly, electrolysisis performed, wherein electrolytic residual liquid is obtained; and fifthly, chlorine removal is performed, wherein when the concentration of chlorine ions in the electrolytic residual liquid is between 180g / L and 280g / L, the electrolytic residual liquid is used for the leaching work procedure; and when the concentration exceeds 280g / L, part of the electrolytic residual liquid is used for the leaching work procedure, and the other part is subjected to standing cooling in a cooling pond, and clean liquid flows back to an electrolysis work procedure to be used. By using the method, the concentration of chlorine ions in electrolyte is effectively reduced, the current efficiency in the electrolysis process is improved, and it is guaranteed that production is continuously performed; and meanwhile, the precipitation speed of ammonium chloride is increased through the cooling pond, and the method is safe, capable of saving energy, easy to operate, small in investment, environment-friendly andfree of emission.

The invention discloses a treatment agent for chlorine-containing wastewater. The raw materials include waste hydrochloric acid solution, nanometer calcium, nanometer aluminum oxide, demineralized water, sodium dodecylsulfonate, stabilizer and adsorbent. The present invention also proposes a preparation method of a chlorine-containing wastewater treatment agent, which includes the following steps: after uniformly mixing nano-calcium and nano-alumina, calcining to obtain prefabricated material A; adding prefabricated material A and sodium dodecylsulfonate After being stirred and reacted in the waste hydrochloric acid solution, the prefabricated material B is prepared by standing; the desalted water, adsorbent, and stabilizer are added to the prefabricated material B, mixed evenly, shaken and dried to prepare the chlorine-containing waste treatment agent. The chlorine wastewater treatment agent of the invention has high chlorine removal efficiency, good removal ability for pollutants such as heavy metals and phosphorus, simple preparation process, low cost and wide market prospect.