64results about How to "Reduce the chromaticity of the water" patented technology

The invention discloses a carbon-iron microbattery slow-release carbon source filler and a preparation method thereof, belonging to the field of restoration of underground water pollution. The carbon-iron microbattery slow-release carbon source filler is composed of an inner core and an outer shell, wherein the inner core is made from organic carbon source mixed materials, and the outer shell is prepared from cement and high-permeability raw materials. The inner core is prepared from the following components in percentage by mass: 25-40% of natural carbon source material, 2-5% of adhesive, 20-37% of water, 15-25% of spongy iron, 10-15% of attapulgite and 2-6% of pH regulator; and the outer shell is prepared from the following components in percentage by mass: 45-53% of attapulgite, 22-25% of kieselguhr, 22-25% of ordinary Portland cement and 3-5% of water. By using the filler and method, the particle strength of the inner core can be enhanced to 70-105N / particle, and the thickness of the slow-release outer shell is lowered to 1-1.5 mm, so that the carbon-iron can be uniformly distributed in the material.

The invention relates to a combined treatment method of 1,4-butanediol production wastewater, which comprises the following steps: carrying out physical and chemical pretreatment on wastewater firstly so as to obtain pre-optimized wastewater; improving the biodegradability of the wastewater and further reducing the COD (chemical oxygen demand) concentration of the wastewater through an upflow anaerobic reactor and an aerobic combined biochemical reaction tank; and after the muddy water separation of the wastewater is realized through a secondary sedimentation tank, sequentially feeding the wastewater into a coagu-flocculation reaction settling pond and a biological filter, carrying out deep treatment on the wastewater, removing substances such as tiny suspended solids and colloids and the like in the wastewater through coagu-flocculation reaction and precipitation, and enabling discharged water to meet the requirements of one-class A standards in the Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant (GB18918-2002) through the synergistic effect of adsorption and biodegradation of the biological filter. The method disclosed by the invention not only has a stable removal effect on COD in 1,4-butanediol production wastewater, but also can effectively resist violent water impacts; and the method has the characteristics of rapid system startup and the like. The method disclosed by the invention also can be applied to the treatment of other high-concentration toxic degradation-resistant organic wastewater with a water quality similar to that of 1,4-butanediol production wastewater.

The invention relates to a method and a device for treating printing and dyeing wastewater by using a macroporous adsorption resin. The method comprises the following technical steps: (1) adding a sodium hydroxide solution to an acidity and alkalinity regulating pond, regulating the pH value of the printing and dyeing wastewater to be more than 8.5, and then discharging the printing and dyeing wastewater into a primary precipitation pond, charging 25% of ferrous sulfate into the primary precipitation pond so as to carry out coagulating precipitation on the printing and dyeing wastewater, discharging the coagulated and precipitated printing and dyeing wastewater into a hydrolyzation pond so as to carry out anaerobic hydrolysis on the printing and dyeing wastewater, precipitating the printing and dyeing wastewater in a secondary precipitation pond, and discharging the printing and dyeing wastewater into an aeration pond so as to carry out aerobic aeration biological treatment on the printing and dyeing wastewater; (2) discharging the aerated wastewater into a tertiary precipitation pond and then filtering suspended solids in the wastewater through a sand filter tank; and (3) enabling sand filtered water to enter a macroporous adsorption resin fixed bed, adsorbing the sand filtered water through the macroporous adsorption resin fixed bed and discharging out the adsorbed water. The wastewater treatment method provided by the invention has the advantages as follows: through the adoption of the macroporous adsorption resin with large specific surface area, high adsorbing efficiency, low cost and simple regeneration, the treatment is efficient, economic, stable, reliable, low-carbon and environment-friendly and adapts to time development; and the wastewater treatment method can be promoted and used in printing and dyeing wastewater treatment.

The invention discloses a coupling processing technology for steadily improving biodegradability of coking wastewater. The coupling processing technology disclosed by the invention comprises the following steps: the quality of water in a primary adjusting pool is adjusted; the water enters an iron carbon active coke reaction tower for realizing a micro electrolysis and active coke adsorbed coupling reaction; after a catalytic oxidation reaction, the obtained water enters a secondary adjusting pool to be mixed with a part of the coking wastewater, and then the quality of the water is adjusted; coagulation, sedimentation and the like are performed. According to the method, the iron carbon active coke subjected to high-temperature sintering and microporous activation is used as a filler, H2O2 / O3 and the like are used as a catalytic oxidizer, so that the biodegradability of the effluent from a system is steadily improved to 0.5 or more. The coupling processing technology for steadily improving the biodegradability of the coking wastewater disclosed by the invention has the advantages that the processing effect is steady, the reliability is high, and the operating cost is low. Besides, the coupling processing technology can be promoted to the field of high-concentration organic wastewater which is difficult to degrade, such as printing and dyeing wastewater, chemical wastewater, pharmaceutical wastewater, and the coupling processing technology effectively solves the problems that the biodegradability of the coking wastewater is poor, a traditional micro electrolysis filler is likely to harden, the yield of sludge is large, and the operating cost is high.

The method for treating DSD acid reduction acid-elutriated waste water: a). regulating pH value of reduction acid-elutriated waste water to 3-4, adding hydrogen peroxide and ferrous salt to make oxidation reaction; b). feeding oxidated waste water into electrolytic reaction to make electrolytic reaction; c). neutralizing wastewater after electrolytic reaction to make its pH value be 8-9: d). separating mud and water; and e). making the separated liquor undergo the process of decalcification. Said invention is simple in process and equipment, its cost is low, and decolouring effect is good, and does not produce secondary pollution.

The invention discloses a tobias acid production waste water controlling and resource recovering method, and the method regulates the pH value of the tobias acid production waste water, filters and makes main organic matters in the waste water absorbed on resin by the combination process of macroporous weakly basic resin and ultrahigh cross-linking absorption resin. The crude waste water: puce, chroma 1500-2000, iodinated tobias acid concentration 12000-15000 mg / L, tobias acid and 2, 1-acid concentration 6000-7000 mg / L, and COD 45000-5000 mg / L, and the processed waste water: chroma 10-50, iodinated tobias acid concentration < 500mg / L, tobias acid and 2, 1- acid concentration <50 mg / L, CODCr<1500mg / L, and the resins are regenerated by liquid alkali and water de-absorption, the high concentration deabsorption solution returns to amination stage of the tobias acid producing process, low concentration deabsorption solution is used indiscriminately in the next deabsoption operation, the sulphonated tobias acid is above 10 kg recovered from per cubic meter of waste water sample and the tobias acid is above 5 kg.

The invention relates to a preparation method of a binary-metal-oxide composite solid acid catalyst and an application of the binary-metal-oxide composite solid acid catalyst to the treatment of organic wastewater, belonging to the field of treatment and catalytic reaction of wastewater in environmental protection. The preparation method comprises the following steps: mixing an ethanol solution of SnCl4.5H2O with Fe2(SO4)3, and adjusting the pH value of the mixture to 9 by using aqueous ammonia to form sol, wherein the ethanol solution of SnCl4.5H2O and the Fe2(SO4)3 are at a certain mass ratio; and ageing, washing, settling centrifugally, drying, grinding and sieving the sol, stirring and mixing the sol and washed and dried diatomaceous earth violently by using a ball grinder, and calcining the mixture at a high temperature to obtain a tin-ferrum-silicon solid acid which takes a metal oxide as an accelerator. The solid acid catalyst can form a heterogeneous Fenton system together with hydrogen peroxide to degrade pollutants and can be used for rapidly and effectively degrading the methylene-blue simulated wastewater, the methyl-orange simulated wastewater, the m-nitrobenzene simulated wastewater, the turquoise-blue dye wastewater, the glyphosate pesticide wastewater and the pharmaceutical-intermediate wastewater without adjusting the pH value of the wastewater, thus fewer reagents are used. The solid acid catalyst has an effect of bleaching by nearly 100% and a strong sedimentation performance and can be recycled.

The invention discloses an advanced treatment technology for wastewater. The technology comprises following steps: wastewater subjected to biochemical treatment is sent to a first regulating tank, pH is regulated to be 4-5, and regulated wastewater is obtained; the regulated wastewater is sent to a chemical feeding tank, the chemical feeding tank comprises two completely isolated units with the same size, a hydrogen peroxide solution and a ferrous sulfate solution are added to the two units respectively and mixed with the regulated wastewater respectively, and first mixed wastewater and second mixed wastewater are obtained; the first mixed wastewater and the second mixed wastewater are sent to a reaction tank for reaction, and a mixed solution is obtained; the mixed solution is sent to a second regulating tank, pH is regulated to be 6-7, and a regulated mixed solution is obtained; the regulated mixed solution is sent to a flocculation and sedimentation tank for flocculation and sedimentation. With the adoption of the treatment technology, the problems of overhigh side reaction flux, reduced main reaction efficiency, chemical waste and the like caused by overhigh local chemical concentration in the reaction tank can be effectively solved.

The invention proposes an ultrafiltration device for processing papermaking wastewater and an application method thereof. The wastewater of a papermaking process section of a tobacco sheet manufactured by adopting a paper-making process is treated by employing a small-aperture rolled ultrafiltration membrane separation technology, useful substances in the wastewater are concentrated while being purified, and the concentrated liquor can be reused in the papermaking process section, so that the papermaking efficiency is improved, and the problem that the useful substances in the existing treatment technologies such as coagulation, biochemistry and the like of the papermaking wastewater are wasted is solved. The ultrafiltration device for processing the papermaking wastewater comprises a pretreatment tank, a coarse filter tank, an ultrafiltration device body, a concentrating tank and a water producing tank; the coarse filter tank is communicated with the pretreatment tank, and used for coarsely filtering the pretreated wastewater; the ultrafiltration device body is communicated with the filter tank, and used for processing and concentrating the wastewater; the concentrating tank is communicated with a thick water outlet of the small-aperture rolled ultrafiltration device, and used for storing the concentrated liquor containing useful substances; and the water producing tank is communicated with a water producing outlet of the small-aperture rolled ultrafiltration device and used for storing ultrafiltration water.

The invention provides an intelligent application program and an optimization method for a Fenton oxidation technology. The intelligent application program comprises: a data input unit, which comprises the following main parameters: the COD concentration of raw water, an expected removal rate of COD, the molar ratio of H2O2 to Fe2+, etc.; a data analysis unit, which comprises the following main parameters: a pure H2O2 amount / COD concentration ratio (K1), the molar number of pure H2O2, the molecular weight of FeSO4.7H2O, the addition amount of Fe2+, etc.; and a data output unit, which comprisesthe following main parameters: the addition amount of the FeSO4.7H2O, the addition volume of H2O2 with a concentration of 28%, the addition amount of the pure H2O2, etc. The intelligent application program provided by the invention can quickly predict the effect of treatment and the cost of chemical addition, obtains an optimal chemical addition amount and a treatment scheme in the shortest time,and makes rapid response to market demands; meanwhile, through addition of a proper amount of a flocculant, rapid settling of sludge is realized, and deviation caused by difficult settling of redundant and excessively-fine floc is easily avoided.

The invention relates to a municipal sewage reclamation treatment device and a treatment method adopting the same. The device comprises a blast aeration system and a sewage treatment system, wherein the blast aeration system comprises a membrane air separator, an oxygen compression tank and a nitrogen compression tank; the sewage treatment system comprises an oxygen refiner, an ozone generator, an aeration tank, a sedimentation tank, a self-oxidation denitrification tank, a secondary sedimentation tank and an ozone contact tank; the municipal sewage passes through a water inlet pipe, is sequentially treated by the aeration tank, the sedimentation tank, the self-oxidation denitrification tank, the secondary sedimentation tank and the ozone contact tank, which are connected in order, and then passes through a water outlet pipe to obtain reclaimed water; the ozone generator is connected with the oxygen refiner and an ozone aeration tray at the bottom of the ozone contact tank respectively by valves. The treatment device and the treatment method have the advantages of simple structure, reasonable design, flexibility and convenience in operation and use, high treatment efficiency, high effluent quality, stability in operation of the device, safety, reliability, and the like.

The invention discloses a method for advanced oxidation advanced treatment of papermaking wastewater by ferrous salt activated persulfate or monoperoxyhydrogensulfate. The method is divided into an oxidation stage and a precipitation stage, and the oxidation stage is carried out in advanced oxidation equipment which is easy to mix with waste water, and the hydraulic retention time is greater than 0.5 hours. Using persulfate or monoperoxyhydrogensulfate to react with ferrous salt to generate strong oxidizing sulfate radicals to oxidize and degrade organic matter in papermaking wastewater. The sedimentation stage is carried out in the sedimentation equipment, the hydraulic retention time is more than 1.5 hours, and the flocculation and sedimentation of iron sludge are strengthened by adding lye and polyaluminum chloride. The effluent of the papermaking wastewater based on the advanced oxidation advanced treatment of sulfate radicals established by the invention is clear and the CODcr is low. The method has high efficiency, is easy to operate, and is applicable to a wide pH range, and has great application value especially for the treatment of paper industry wastewater with complex components and high requirements for advanced treatment.

The invention provides a process for treating high-concentration organic wastewater in the tobacco sheet industry. The process comprises the following steps: high-concentration organic wastewater flows through a collection device and enters a coagulating basin, and a coagulant and a flocculating agent are added into the coagulation basin for coagulation treatment; the supernatant enters an electrocoagulation reaction pool; and treated wastewater enters a FENTON reaction pool, the supernatant of the high-concentration organic wastewater treated by strong oxidation and low-concentration wastewater are mixed and enter a low-concentration sewage treatment system, and sludge generated in reactions is discharged into a sludge treatment system. By adopting the process, the chrominance in water can be completely removed, and the effluent chrominance of the system is less than 80 times, and achieves the first-grade drainage standard; and refractory substances in the high-concentration wastewater can be removed, and the biochemical availability of the whole system can be improved.

The invention discloses a preparation method of hydroxyl oxidize iron modified filter media and application thereof, which relates to a preparation method of the modified filter media and the application thereof. The invention solves the problems that adsorption strength on a carrier is low, an absorption layer is easy to drop off and the service life of the filter media is short in the currentlyadopted modified filter media. The preparation method of the hydroxyl oxidize iron modified filter media comprises the steps that: first, the carrier is soaked in acid and then soaked in a ferric chloride solution; second, washing is carried out; third, drying is carried out. The hydroxyl oxidize iron modified filter media is obtained. The hydroxyl oxidize iron modified filter media of the invention is used for purifying water. The hydroxyl oxidize iron modified filter media prepared by the invention has large specific surface area and high absorption strength and does no harm to human bodies;the combination between hydroxyl oxidize iron and the carrier is relatively firm and service life is long.

The invention provides an electro-catalysis efficient decoloration method and device for oil field waste liquid. The method comprises the following steps: carrying out acidification aeration treatmenton the oil field waste liquid; carrying out electro-catalysis oxidation treatment on the oil field waste liquid after the acidification aeration treatment; and after the electro-catalysis oxidation treatment, carrying out delayed standing stirring settling, so as to finish the efficient decoloration of the oil field waste liquid. By utilizing an acidification aeration preoxidation-electrocatalytic oxidation-delayed reaction settling combined process, the addition of a chemical agent in the treatment process of operation waste liquid is effectively reduced, the sludge output is decreased to bebelow 20% of that of a conventional chemical mixed flocculation process, the chroma removing rate is stabilized over 85%, and the comprehensive treatment cost is lowered by over 20%.

The invention provides a device and a method for deeply treating oxadiazon production wastewater and relates to the technical field of sewage treatment. The device comprises a pre-settling tank, a micro-electrolysis reactor, a flocculation tank, a decoloring tank, an ozone generation device, a MVR evaporator, an A / O biochemical tank and an electrocatalysis oxidation tank. The method is formed by effectively combining settling treatment, microelectrolysis, flocculation settling, decoloring process, MVR evaporation process, A / O process and electrocatalysis oxidation process. The device and the method are good in effect of reducing wastewater pollution, low in cost and high in safety coefficient.