24 results about "Coke wastewater" patented technology

This invention provides a semi-coke wastewater treatment device and process. The semi-coke wastewater treatment device comprises, in sequence, a semi-coke production wastewater conditioning system, an electrolytic flotation system, a freeze crystallization system, a salt phase conditioning system, a high-temperature wet oxidation system, and an ammonia nitrogen stripping and distillation system. The freeze crystallization system is connected to an aqueous phase conditioning system, a BDD electro-oxidation system, and a biochemical system. The ammonia nitrogen stripping and distillation system is connected to the biochemical system. This invention effectively solves a series of technical problems in existing semi-coke wastewater treatment devices, such as lengthy process flows, high equipment investment and operating energy consumption, and clogging of the ammonia stripping and phenol removal unit due to phenol polymerization and coking, and oil adhesion. This invention also provides a semi-coke wastewater treatment process.

The utility model relates to the technical field of semi coke wastewater and discloses a circulating treatment equipment for semi coke wastewater, which comprises a treatment box, a fixing seat and a negative pressure extraction assembly, and a booster pump is fixedly installed on the fixing seat. The circulating treatment equipment for semi coke wastewater, when the negative pressure extraction assembly is working, the extraction pump extracts gas from the treatment box through the extraction pipe one, forming a negative pressure environment in the negative pressure tank, so that the product liable to liquefaction in the treatment box is vaporized and then extracted, and is discharged through the extraction pipe two and the discharge pipe. The boiling point of the product is reduced through the negative pressure environment, the liable to liquefy substance is vaporized and separated at a lower temperature, the influence of high temperature on the performance of the adsorbent is avoided, and thus dry adsorbent is obtained. After the booster pump is started, the methanol in the methanol storage tank can be pumped into the treatment box through the connecting pipe one and the connecting pipe two, the adsorbent is washed, the step of washing the adsorbent with methanol can effectively remove the pollutants attached to the surface of the adsorbent, the adsorption performance of the adsorbent is restored, and the adsorbent is convenient for subsequent cyclic use.

This utility model relates to the technical field of wastewater treatment devices, and in particular to a membrane assembly for deep treatment of coal coking wastewater. Its features include: a support frame arranged inside the treatment tank; multiple sets of horizontally evenly distributed mounting frames fixedly connected within the support frame; each mounting frame fixedly connected to an MBR membrane; an aeration device arranged at the bottom of the support frame; two opposing suspension rods fixedly connected to the upper end of the support frame; each suspension rod fixedly connected to a lifting lug; longitudinal movement inserts arranged at both ends of the treatment tank; each longitudinal movement insert fixedly connected to a rod; the rods and lifting lugs are interlocked; each longitudinal movement insert includes two longitudinal rods fixedly connected to the treatment tank; the two longitudinal rods are jointly fixedly connected to a crossbeam; a drive screw is threadedly connected to the middle of the longitudinal movement rod; the left and right ends of the longitudinal movement rod are slidably connected to the two longitudinal rods; and the longitudinal movement rod is fixedly connected to the rod.

The utility model relates to the technical field of coking wastewater treatment of steel mills, in particular to efficient wastewater purification and waste heat recovery integrated equipment for coking of steel mills, which comprises a rough filtration tank, an aeration tank is fixedly mounted on the outer surface of the rough filtration tank, and a heat preservation water tank is buried on the ground of one side of the rough filtration tank. And heat dissipation fins are fixedly mounted in the filtering sedimentation tank. According to the efficient wastewater purification and waste heat recovery integrated equipment for coking in the steel mill, wastewater is filtered by a filtering fence after being discharged into a coarse filtering box and then enters a filtering and settling pond to be filtered step by step, and when the wastewater flows through the filtering and settling pond, heat of the wastewater is absorbed by heat dissipation fins, so that the heat dissipation efficiency of the wastewater is improved. At the moment, the first circulating water pump is started to pump out the water in the heat preservation water tank and take away heat, so that the temperature can be reduced while impurities in the waste water are settled, the temperature can be stored in the heat preservation water tank, and the heat of the waste water can be recycled for other purposes.

This invention relates to the technical field of industrial wastewater treatment equipment, specifically an integrated pretreatment device for coking wastewater reuse. It includes an integrated housing, internally divided into a hardening reaction zone, a coagulation and flocculation zone, an inclined tube sedimentation zone, and a COD deep removal zone. The hardening reaction zone is equipped with a first-stage cyclone mixer and a lime slurry dosing loop to achieve hydraulic mixing and hardening removal. The coagulation and flocculation zone features alternating downflow and upflow baffles, working in conjunction with polyaluminum chloride and polyacrylamide dosing loops to complete baffled coagulation. The inclined tube sedimentation zone contains hexagonal honeycomb inclined tubes and a sawtooth overflow weir. The COD deep removal zone is filled with a granular activated carbon packing layer, with a perforated air distribution pipe at the bottom. Each reaction zone has a pyramidal sludge collection hopper and a pneumatically controlled sludge discharge pipeline at the bottom. This invention features high integration, eliminates the need for an electric agitator, utilizes hydraulic mixing and baffles to extend the reaction path, allows for activated carbon regeneration via air washing, and ensures reliable operation.

This invention relates to the field of energy-saving and environmental protection technology, specifically to a carvacrol-based hydrophobic eutectic solvent extractant and its preparation method, and its application in the extraction of quinoline from coking wastewater. The structural formula of the carvacrol-based hydrophobic eutectic solvent is shown in formula (I). The method for extracting quinoline from coking wastewater is as follows: the carvacrol-based hydrophobic eutectic solvent is placed in an aqueous solution containing quinoline, and the quinoline is extracted under constant temperature and stirring conditions. The carvacrol-based hydrophobic eutectic solvent prepared by this invention uses natural, inexpensive, simple-to-prepare, and environmentally friendly raw materials, and has a strong ability to remove quinoline from coking wastewater. Simultaneously, this eutectic solvent has good phase-forming ability with water, achieving phase separation with a relatively small dosage. Under the conditions of a volume ratio of carvacrol-based hydrophobic eutectic solvent to quinoline aqueous solution of 1:10, pH value of 7, temperature of 25℃, extraction time of 10 minutes, and concentration of 50 mg / L, the extraction efficiency of quinoline can reach 98.41%. (I)

This invention relates to the field of coking wastewater treatment technology and discloses a method for preparing reagents for advanced coking wastewater treatment, comprising the following steps: S1: determining the ratio of activated carbon to iron-containing flocculant and aluminum-containing flocculant; S2: dissolving activated carbon powder in water to prepare a uniform activated carbon liquid; S3: adding the activated carbon liquid according to the ratio, with the two mixed reagents prepared separately and transported separately through independent pipelines; S4: testing the two mixed reagents separately to determine whether they meet the standards; S5: if both mixed reagents meet the standards, adding the two independent mixed reagents to a mixing tank and mixing them together with the coking wastewater to be treated; if either mixed reagent fails to meet the standards, adjusting the ratio of the corresponding flocculant to activated carbon, returning to S3 to remix the reagents and test again; S6: after the mixing treatment is completed, the advanced treatment of coking wastewater is completed, and the treated wastewater can be discharged in compliance with standards or enter subsequent treatment equipment such as reverse osmosis membranes.

The utility model provides a kind of coking wastewater coupling utilization system, belong to chemical production wastewater treatment technical field, it includes solvent recovery column, deaminating tower, water tower, solvent recovery column reboiler, water tower reboiler and ammonia gas processing system, solvent recovery column, deaminating tower and water tower are sequentially communicated from front to back, the top of deaminating tower is communicated with ammonia gas processing system via solvent recovery column reboiler, the top of deaminating tower is also communicated with ammonia gas processing system via water tower reboiler.The utility model discharges high-temperature ammonia gas from the top of deaminating tower as heat source, heats the column still liquid in solvent recovery column reboiler, heats water in water tower reboiler, replaces the existing heat-conducting oil heating mode, simultaneously reduces the quantity of subsequent equipment for cooling ammonia gas, to realize the coupling utilization of heat in high-temperature ammonia gas discharged from deaminating tower, reduce the waste of heat energy.

This invention relates to an automatic alkali addition system for coking wastewater, comprising an alkali storage tank, a conveying unit, a pipeline unit, a detection unit, and a control unit; and an automatic alkali addition method for coking wastewater, comprising the following steps: 1) setting a target pH value according to the ammonia nitrogen compliance requirements of the coking wastewater; 2) collecting the measured pH value at the outlet of the ammonia stripping tower wastewater in real time and transmitting it to the control unit in real time; 3) the control unit, based on the measured pH value and the target pH value, using a PID algorithm, obtaining a control signal for adjusting the stroke or frequency of the alkali metering pump; 4) the conveying unit, based on the control signal obtained in step 3), adjusting the alkali dosage in real time; 5) the control unit continuously collecting the measured pH value and repeating steps 2) to 4), dynamically correcting the alkali dosage in real time, which can effectively achieve unblocked continuous operation of the pipeline, precise pH control, while reducing alkali consumption and maintenance costs.

The present application relates to a preparation method of a semi-coke wastewater oil removal agent, which comprises the following steps: modifying the lipophilicity of solid acid, and compounding the modified lipophilic solid acid with a silicic acid hydrosol to prepare the semi-coke wastewater oil removal agent. The present application utilizes the acidic point of the solid acid to reduce the pH of the wastewater, realizes acidification demulsification, changes the state of the emulsified oil, and utilizes the lipophilicity of the modified solid acid to form the aggregation center of the oil after demulsification, so that the oil remains stable. Then, the adsorption and flocculation of the silicic acid hydrosol are utilized to assist the rapid precipitation separation of the solid acid after oil removal, and the oil and suspended matters are removed twice. In addition, the solid acid has a large specific surface area and rich pore structure, and has a certain adsorption effect on the organic pollutants in the wastewater, so that the pollutant concentration in the wastewater can be reduced during oil removal.

This invention discloses a method and apparatus for treating coking wastewater, which can comprehensively treat coking wastewater to ultimately obtain industrial raw materials such as hydrogen, ammonia, and sodium sulfate crystals, achieving the goal of resource utilization of coking wastewater. The method includes: feeding coking wastewater into an oil removal device for oil removal treatment; feeding the oil-removed coking wastewater into an equalization tank and mixing it with alkaline solution; feeding the pH-adjusted coking wastewater into an ammonia removal tower for heating and ammonia removal to obtain ammonia vapor and ammonia removal mother liquor; condensing the ammonia vapor into a condenser for ammonia recovery; feeding the ammonia removal mother liquor into a wastewater oxidation treatment and hydrogen production device to obtain slag and hydrogen; feeding the slag into a first solid-liquid separation device to obtain waste residue and a first filtrate; cooling the first filtrate in a cooler and then feeding it into a second solid-liquid separation device to obtain the cooled and precipitated sodium sulfate and a second filtrate; and returning the second filtrate to the wastewater oxidation treatment and hydrogen production device.

This utility model discloses a heterogeneous catalytic wet oxidation device suitable for coking wastewater treatment, belonging to the field of wastewater treatment. The device mainly includes an equalization tank (1), a dosing device (2), a sedimentation tank (3), a high-pressure pump (4), a wastewater tubular heat exchanger (5), a reaction tower (6), a gas tubular heat exchanger (7), an air compressor (8), a condenser (9), a gas-liquid separator (10), a tail gas treatment device (11), a spray system (12), a nano-catalyst partition (13), and a micro-nano aeration device (14). The high-temperature flue gas from the coking plant is used to heat the air (or other oxygen-containing gas) to achieve waste heat utilization. The nano-catalyst partition utilizes carbon fibers to support nano-catalysts. Micro-nano aeration systems are respectively provided at the bottom and middle of the reaction tower. The oxygen mass transfer efficiency is improved through a graded cross-flow method, which enhances the decomposition of pollutants in the wastewater and effectively improves the pollutant removal efficiency in the wastewater.

This invention belongs to the field of coking wastewater treatment technology and discloses an optimized process for a high-load aerobic tank to improve the treatment efficiency of coking wastewater, including the following steps: (1) After pretreatment, the coking wastewater enters the equalization tank. A portion of the sludge mixture in the equalization tank enters the high-load aerobic tank O1 and the primary sedimentation tank in sequence, and another portion of the sludge mixture enters the low-load AO tank and the primary sedimentation tank in sequence; (2) A portion of the activated sludge in the primary sedimentation tank and the primary sedimentation tank is internally recycled and recycled back to the high-load aerobic tank O1, respectively; (3) The activated sludge in the high-load aerobic tank O1 is regulated and a continuous high-load influent operation mode is maintained. The regulation includes aeration rate regulation, nutrient regulation and sludge discharge rate regulation; (4) The effluent from the high-load aerobic tank O1 enters the low-load AO tank, and the substance content of the effluent is controlled so that the C / N ratio of the low-load AO tank is within a certain range. This invention utilizes the sludge recycling and regulation method to ensure that O1 can operate stably under high-load operation.

This application provides a wastewater treatment device for semi-coke production, including a boiler. The boiler furnace is connected to an ammonia water pipeline in front of the boiler via multiple spray guns. The ammonia water pipeline in front of the boiler is sequentially connected to an ammonia water pump, a wastewater intermediate tank, and a wastewater pool. An ammonia water main valve is installed between the ammonia water pipeline in front of the boiler and the ammonia water pump. A spray gun valve is installed between the spray guns and the ammonia water pipeline in front of the boiler. This device, through the above-mentioned equipment configuration, incinerates the wastewater from semi-coke production, overcoming the drawbacks of existing conventional methods for treating coking wastewater, such as high cost, high treatment difficulty, and poor treatment effect.

The utility model discloses an acidification prevention type anaerobic reactor for coking sewage biochemical treatment, including jar body, and first three -phase separation, second three -phase separator in jar body from top to bottom in proper order, the jar body top surface is equipped with gas -liquid separation tank, is equipped with pH monitor and is used for dosing tank of dosing pH adjustment, the utility model discloses a jar body first three -phase separation, the second three -phase separator of setting can collect marsh gas, forms the internal circulating system, and improves the processing efficiency of reactor, through the feeding of screw rod and piston plate in dosing tank, can more continuous, quantitative dosing, makes the adjustment of pH value more accurate, convenient.

This invention provides a method for preparing a coking wastewater flocculant and its application, belonging to the field of coking wastewater treatment technology. The preparation method utilizes aluminum chloride and ferric chloride as inorganic metal salts and APTES as a silicon source to prepare a coking wastewater flocculant with both ionic and covalent bonds. The coking wastewater flocculant, when used in conjunction with a micro-vortex flocculation reactor, can effectively remove components such as COD, thiocyanate, color, and turbidity from coking wastewater.

This invention belongs to the field of environmental protection technology and provides a method for treating coking wastewater using waste activated carbon powder. The method includes: crushing and pulping the waste activated carbon powder to obtain a washing liquid and washed activated carbon powder; detecting the specific gravity of the washing liquid; returning the low-specific-gravity washing liquid to the recycling pulping process; discharging the high-specific-gravity washing liquid, evaporating and crystallizing it to obtain crystalline salt I and mother liquor I; acid washing the washed activated carbon powder to obtain an acid washing liquid and acid-washed activated carbon powder; mixing the acid-washed activated carbon powder with elemental iron and then pressing it into briquettes to obtain iron-carbon briquettes; mixing the coking biochemical wastewater with mother liquor I and reacting it with the iron-carbon briquettes to obtain waste material and a preliminary purified liquid; sequentially adsorbing and concentrating the preliminary purified liquid to obtain a concentrated liquid and purified water; and crystallizing the concentrated liquid to obtain crystalline salt II and mother liquor II. This invention achieves the resource utilization of activated carbon powder, simultaneously reducing the degradation of difficult-to-treat COD in coking biochemical effluent and realizing the recycling of alkali metal resources in the activated carbon powder.

This utility model discloses a device for defluorination and decolorization of carbon catalytic coking wastewater, belonging to the field of wastewater treatment technology. It includes a reaction body, a defluorination unit, a decolorization unit, and a filtration unit located within the reaction body. The reaction body is arranged with defluorination, decolorization, and filtration zones distributed from top to bottom to complete the defluorination, decolorization, and filtration treatment of the coking wastewater. A reflux path is formed between the defluorination and decolorization zones, and between the defluorination and filtration zones, respectively, through a reflux box and a guide box. This allows the wastewater to undergo defluorination treatment in different modes before and after the decolorization unit, improving the overall efficiency and effect of defluorination. Simultaneously, both oxidation-reduction and adsorption methods are used for decolorization of the coking wastewater. During the above process, the wastewater can circulate and interact between different treatment zones. This reflux mechanism can fully utilize the treatment capacity of each treatment zone, improving the overall treatment effect of the device on coking wastewater.

This invention belongs to the field of coking wastewater concentrate treatment, and discloses a coking wastewater membrane concentrate treatment agent and its preparation method. The treatment agent comprises the following raw materials in parts by weight: 5-15 parts ethylenediaminetetraacetic acid, 10-30 parts sodium persulfate, 20-50 parts modified cellulose, and 10-25 parts lime; wherein the modified cellulose is a composite material obtained by reacting cellulose with sulfonated myricetin at a mass ratio of 1:(2-3). The treatment agent of this invention uses modified cellulose obtained by combining cellulose and sulfonated myricetin, which can significantly improve its adsorption performance and complexing ability in wastewater treatment, and enhance its ability to remove organic matter. Through the synergistic effect of multiple components, the treatment agent of this invention can simultaneously and efficiently remove high concentrations of organic matter, high salinity, and high color from coking wastewater membrane concentrate.

The present application belongs to the technical field of sludge drying, and particularly relates to a disc dryer applied to coking wastewater treatment, which aims to solve the problems of easy fouling and wear of the disc surface and loss of heat energy caused by secondary condensation of water vapor, and comprises a shell, staggered upper and lower drying discs arranged in the shell, a step-by-step material pushing mechanism arranged above the drying discs, a cavity arranged in the drying disc, a vertical pipe and a gas guide pipe for introducing steam to heat the disc surface, a gas guide mechanism comprising a conical pipe fixed below the drying disc and turbine blades on the hollow shaft for guiding the water vapor generated during drying into the hollow shaft through the gas inlet hole and discharging it outward, and movable rake nails arranged on the pushing plate for plowing hard materials downward when they are encountered. The device can reduce fouling and wear of the disc surface and reduce the secondary condensation of steam in the equipment.

The present application relates to a kind of combined fillings of microbial fuel cell for wastewater treatment, including four fillings of filler A, filler B, filler C and filler D, the filler A is adsorbed activated carbon, filler B is coking plant's crushed coke and coke powder, filler C is solid waste of chemical production recovery, filler D is blast furnace iron slag, four fillings in the combined filling are calculated with different material layer height, and the combination ratio is that filler A accounts for 50%~60%, filler B accounts for 20%~25%, filler C accounts for 10%~20%, and filler D accounts for 5%~10%.When coking wastewater is treated using microbial fuel cell, the production operation cost is reduced, and the fuel cell treatment efficiency is improved, and the solid waste discharge of steel plant is reduced.

The utility model relates to a kind of coal coking wastewater circulating treatment devices, including intermediate tank, first water pump, second water pump and cross-shaped support seat, the lower side of intermediate tank is connected with the water outlet pipeline with water outlet valve having, the upper side of one side is connected with the water return pipeline with water return valve, first water pump water inlet is communicated with water outlet pipeline, water outlet is communicated with the water inlet channel of being established in the center of support seat bottom, the water inlet of second water pump is communicated with the water return channel of being established in the center of support seat top, water outlet is communicated with water return pipeline, the support seat in the upper portion of water inlet channel both sides is equipped with water inlet branch, the left and right sides of the tail end of two water inlet branches are communicated with water inlet branch pipe, the support seat in the lower portion of water return channel both sides is equipped with water return branch, the left and right sides of the tail end of two water return branches are communicated with water return branch pipe, control valve is equipped on water inlet branch pipe and water return branch pipe. The utility model can realize the cyclic adsorption depth treatment of coal coking wastewater, and the treatment effect is better.

The utility model discloses a coking wastewater treatment equipment with multistage defluorination function, including bottom warehouse, a plurality of from top to bottom are in turn and slide seal setting frame in bottom warehouse, and the filter screen of setting in each frame bottom, bottom warehouse, frame upper is equipped with first gasbag pole, is equipped with recess and cleaning plate on frame one side inner wall, and the driving piece for driving cleaning plate movement is equipped with in frame inner wall, and cleaning plate and frame inner wall, recess inner wall all slide seal connection, and the inside of frame other side side wall is equipped with recovery groove, the utility model discloses through the multistage filtration and defluorination of a plurality of frame's upshift, and the small footprint is convenient for storage, and can clean the filter screen automatically after each level defluorination, and the defluorination efficiency is high.

The application discloses a semi-coke wastewater treatment process and a resource utilization method, and relates to the technical field of wastewater treatment. The method comprises the combined methods of adjusting oil separation, alkaline coagulation, electro-catalytic oil removal, acidification demulsification filtration, phenol extraction, multi-stage countercurrent centrifugal extraction and recovery of crude phenol, alkaline stripping ammonia removal and recovery of ammonium sulfate, and can efficiently remove oil, phenol and ammonia nitrogen pollutants, realizes resource recovery and meets the discharge standard. The process has compact structure and simple operation, does not depend on complex biochemical or membrane technology, has good industrial applicability, and provides a feasible wastewater zero discharge and resource utilization path for semi-coke production enterprises.