38 results about "Wastewater disposal" patented technology

The invention discloses a method and a system for modularized combined treatment of high-difficulty organic waste water, and the treatment system comprises: a primary settling tank, an adjusting tank, a reinforced flocculation tank, a precipitation separation tank, a secondary flocculation settling tank, a buffering water tank, a pH adjusting tank, a primary honeycomb microelectrolytic tank, a flocculation settling tank, a secondary honeycomb microelectrolytic tank, an intermediate tank, a heat exchanger, a microwave catalytic oxidation device, a secondary catalytic oxidation pot, and a re-oxidation filter pipe. The treatment method adopts a combined technical scheme of a multistage honeycomb iron carbon microelectrolytic module, a reinforced flocculation module and a microwave electro-catalytic oxidation module; the invention has the characteristics of high applicability, good treatment effect, and unit modularization; the modules can be combined and cascaded freely according to the waste water condition, and thus different waste water treatment effect requirements and waste water quantity requirements are adapted; the operation cost is low; the sludge amount is low; no secondary pollution is caused; and the method is an environment-friendly high-difficulty waste water treatment method.

A wastewater treatment method and apparatus including a denitrification (anoxic) chamber for denitrifying wastewater, an aeration basin with Bio-Wheel for aerating the wastewater, and a membrane device in which sludge particles are separated out of the wastewater, leaving clean discharge water and reusable sludge. Sludge from the membrane chamber floor is sent back to the aeration basin or denitrification chamber or both. Excess sludge is wasted or held for further processing. Preferably, the method and apparatus facilitate both activated sludge and fixed film processes.

The invention discloses a method for treating coking wastewater, and relates to the technical field of coking wastewater treatment. A coking wastewater treatment system is adopted for treating, the wastewater treated by the coking biochemical system is pumped into a water distributor, the wastewater is injected into the bottom of an inclined-tube sedimentation tank by the water distributor, the wastewater is blocked by an inclined-tube packing zone in the rising process, the wastewater is discharged from the top of the inclined-tube sedimentation tank after part of suspended matters are removed to enter an upper column liquid tank, the wastewater is pumped to a shallow sand filter group by an upper column liquid pump and filtered and then enters a resin adsorption tower, the wastewater is adsorbed by resin and then the effluent flows into a tail water tank from the tower bottom. By adopting the method, the intercepting efficiency of chroma, COD and total cyanides is high, the yield of concentrated pollutants is low, the water quality stability of discharged tail water is good, the water quality and stability of the tail water are effectively improved, and the water quantity is reduced significantly; and the method has the advantages of short flow, low space occupation, appropriate investment, low operation cost and the like.

The invention discloses a film treatment process for fatty acid wastewater. The invention aims to provide a novel recycling film treatment process for fatty acid wastewater. The process comprises the processes: oil-separating pre-treatment, film technical ultrafiltration, filter pressing, air-floating technology, evaporative treatment or biological treatment and the like. The wastewater treatment process disclosed by the invention adopts a process of a double film method combined with various treatment modes and adopts a process flow of gradually removal and extraction by many steps, so that harmless treatment of the wastewater or recycle of resources is finally realized. The wastewater treatment process disclosed by the invention solves a series of problems that the prior art is complex in process, the wastewater treatment effect is poor, great in difficulty and high in cost, the beneficial components in the wastewater cannot be recycled, the equipment is large in occupied area, the flocculant is liable to low temperature failure and the like.

The invention relates to a method for treating dinitro-diazophenol (DDNP) primary explosive production wastewater, belonging to the technical field of primary explosive sewage environmental-friendly treatment. The method is characterized by comprising the following steps: 1), carrying out classification: carrying out separation treatment on wastewater generated in the DDNP primary explosive production process according to the concentrations of poisonous compounds to obtain high-concentration wastewater and low-concentration wastewater, and respectively storing the high-concentration wastewater and the low-concentration wastewater; 2) carrying out high-concentration wastewater treatment: spraying the high-concentration wastewater on solid fuel, carrying out evaporation concentration, placing the solid fuel with less water after evaporation into a boiler, and incinerating the solid fuel with less water; 3) carrying out low-concentration wastewater treatment: introducing the low-concentration wastewater into a settling pond, settling the low-concentration wastewater, and utilizing the boiler to evaporate the supernatant liquor; and 4), periodically fishing out and cleaning the settling pond, blending solid precipitates in the settling pond into the solid fuel, and incinerating the solid precipitates and the solid fuel together. The method of the invention has the advantages that the wastewater treatment is safe and environmental-friendly, zero discharge of the DDNP primary explosive sewage is achieved, energy resources are saved, and the service life of production equipment is not influenced.

The invention provides a method for treating and utilizing waste water generated by producing saponin by yellow ginger. The method comprises the following steps that: mother liquid wastewater is filtered after the yellow ginger is subjected to acidolysis; the mother liquid wastewater is neutralized to neutrality with pH value of between 4.5 and 5 by calcium oxide; after precipitating, a supernatant is infiltrated into the solution for fermenting, and composite yeast and a nitrogen-contained compound are simultaneously added into the solution to ferment for 3 days at a temperature of between 32 and 38 DEG C; after fermentation is completed, the mother liquid wastewater which is treated by the processes is infiltrated to an alcohol tower for distilling; after alcohol is distilled out, the content of COD in residual wastewater in the tower is about 1,000; and after the residual wastewater is filtered through a polymer film to filter out yeast, calcium substances and other organic substances in the wastewater, the residual mother liquid wastewater is purified water, so discharge standard without pollution is met.

The invention discloses a treatment method of a contaminated water body by promoting degrading bacteria to be fixedly planted at a biological film. The method comprises the following steps of: screening bridging bacteria and degrading bacteria with wide conglutination capability, and respectively collecting bacteria bodies; preparing bacterium suspension in which OD660=1 by a liquid which contains CaCl2.2H2O and MgSO4.7H2O and is used for promoting the conglutination; and adding the mixed bacterium suspension of the bridging bacteria and the degrading bacteria into a biofilm process waste water treatment pond containing toxic and difficult-degradable organic matters, or a water area polluted by the toxic and difficult-degradable organic matters. Aiming at the phenomenon that the waster water or the contaminated water body normally contains various difficult-degradable organic matters, the bacteria which are wide in conglutination capability are adopted to be mixed with various high-efficiency degrading bacteria, so that the conglutination function among various functional bacteria can be further enhanced due to the improvement of a bacteria cultivating condition or a conglutination condition, various degrading bacteria can be promoted to be immobilized at the biological film, the loss of the degrading bacteria can be reduced, the stability can be remained, and the treatment effect of the contaminated water body can be effectively improved.

The invention discloses a steam waste heat gradient utilization system for a carbon capture absorbent regeneration system. A reboiler in the steam waste heat gradient utilization system is communicated with a low-pressure cylinder of a steam turbine through a low-pressure supersaturated steam supply pipeline, a temperature reducing unit cools low-pressure supersaturated steam, the reboiler is communicated with a low-pressure flash evaporation unit through a condensed water supply pipeline, the low-pressure flash evaporation unit is communicated with a low-temperature multi-effect distillationunit through a low-temperature steam supply pipeline, and condensed water in the low-pressure flash evaporation unit returns to a steam-water circulation system of a waste heat boiler at the temperature of 70 DEG C or below. According to the invention, under the condition that carbon capture is carried out, seawater desalination or high-salinity wastewater treatment is carried out by utilizing thewaste heat of the capture unit, the natural gas-steam combined cycle-CO2 capture unit energy gradient utilization is achieved, meanwhile, co-production is achieved, the overall economy is improved, the temperature of condensate water returning to a steam-water circulation system of the waste heat boiler is reduced, and then flue gas waste heat in a waste heat boiler system is fully utilized.

The invention discloses a mine acidic iron-containing wastewater treatment method and system. Limestone macadam with a low price is used for pre-adjusting a pH value, then the pH value is adjusted tobe more than 6 through a coal ash filter material, the oxygen content in the wastewater is increased through a multi-stage ecological drop channel, and then a catalytic oxidation reaction is carried out through manganese sand contact to remove iron in the water. An interval is formed between a regulating filter tank and a contact filter tank, and an S-shaped circuitous water flow direction is formed in the regulating filter tank and the contact filter tank, so that wastewater is in full contact with fly ash and manganese sand filter materials, and neutralization reaction and catalytic oxidation reaction effects are further improved. The consumption of electric power and external consumables is extremely low, the daily operation is unattended, only sludge in the sedimentation tank needs tobe periodically cleaned, and the mine acidic iron-containing wastewater treatment method and system are particularly suitable for unattended field environments with inconvenient traffic. Compared withthe existing sewage treatment facilities, the overall investment and the later operation and maintenance cost can be greatly reduced, and good popularization values are achieved on the standard discharge of the coal mine well wastewater and the environmental protection.

The invention discloses a filtering and purifying device for chemical wastewater treatment. The filtering and purifying device mainly comprises an outer frame, a two-way pump, a side shell, a motor, afilter block, a stirring frame, filler frames and a material pipe. A first inner shell is fixedly installed on the upper portion of the inner side of the outer frame, bilaterally-symmetrical bottom frames are fixedly installed on the lower portion of the inner side of the first inner shell, the filler frames are inserted into the top ends of the bottom frames, material pipes are inserted into themiddles of the filler frames, limiting sleeves are fixedly installed in the middle of the outer sides of the material pipes, and connecting plates are fixedly installed on the outer walls of the limiting sleeves. The filtering and purifying device is reasonable in structural design, circularly flowing water is in full contact with the filler, impurities carried in wastewater are prevented from being accumulated on the surface of the filler, the reaction efficiency is guaranteed, and the combined filler frames are very convenient and rapid to lift, lower and replace the internal filler; and electrolysis and sedimentation are separately carried out, flocculate is prevented from being accumulated on the surface of the filler, the later purification degree and speed are improved, the mixing uniformity degree is improved through the stirring frame, and the reaction speed is high.

The invention provides a device and method for treating oxidation-state nitrogen wastewater by using a combination of iron alloy and anaerobic ammonium oxidation bacteria. The device comprises a towerbody, a water inlet tank, a dosing tank, a water outlet and a gas outlet, wherein a plurality of wastewater treatment layers are arranged in an inner cavity of the tower body, and each wastewater treatment layer is composed of a supporting layer, an iron alloy filler layer and an anaerobic ammonia oxidation sludge granular layer. The wastewater treatment method comprises the following steps: a) feeding and distributing water; b) carrying out a reduction reaction on oxidation-state nitrogen; c) carrying out anaerobic ammonia oxidation; d) adjusting a pH value; e) conducting reactions a plurality of times. According to the device and the method for treating oxidation-state nitrogen wastewater in the invention, the iron alloy fillers reduce a part of oxidation-state nitrogen into ammonia, then the ammonia enters the anaerobic ammonia oxidation sludge particle layers, ammonia and nitrite ions are converted into nitrogen together through anaerobic ammonia oxidation bacteria; and complete removal of oxidation-state nitrogen in the sewage is guaranteed by arranging the multiple layers of the iron alloy fillers and the multiple anaerobic ammonia oxidation sludge particle layers.

The invention relates to the technical field of chromium-containing wastewater treatment, in particular to a method for treating chromium in tanning dyeing and finishing wastewater. The method for treating chromium in tanning dyeing and finishing wastewater comprises the steps of (a) mixing pretreated dyeing and finishing wastewater with an induction reagent, and carrying out an induction reaction; and (b) adjusting the pH value of the material subjected to the induced reaction to be alkaline, and carrying out precipitation treatment, wherein the induction reagent comprises soluble metal salt. In the treatment method, the pretreated dyeing and finishing wastewater is mixed with the induction reagent, under the action of the induction reagent, a small quantity of residual neutral chromium complex in the wastewater is converted into a positive chromium complex, the charge property of complex-state chromium is changed, then the pH is adjusted, precipitation is carried out, chromium is removed, and the removal effect on chromium in the wastewater is greatly improved.

The invention relates to a disease-dried livestock and poultry drying wastewater treatment technology. The technology comprises the following steps: pumping wastewater generated in a drying process into a first reactor, adding a nonionic polyacrylamide reagent into the first reactor, performing uniform stirring, standing the obtained solution, pumping the obtained upper liquid into a rendering tank, and pumping the obtained lower liquid into a second reactor; adding an anionic polyacrylamide reagent and a cationic polyacrylamide reagent into the second reactor, performing uniform stirring, standing the obtained solution, pumping the obtained supernatant into a plate-and-frame filter press filled with polyacrylamide water-absorbent resin, and pumping the obtained lower floc into the rendering tank; and pumping a filtrate in the plate-and-frame filter press into a membrane module, detecting a clear liquid in the membrane module, directly discharging the qualified clear liquid, and pumping the above obtained concentrate into the second reactor. The technology has the advantages of simplicity in operation, low energy consumption, and strong applicability to the quality of water, and the treated water has low COD content and low ammonia nitrogen content.

The invention relates to the field of wastewater treatment, and discloses a method for improving performance of a reverse osmosis membrane and a method for treating wastewater. The method for improving the performance of the reverse osmosis membrane includes: enabling acid or alkali solution to contact with the reverse osmosis membrane, wherein the concentration of hydrogen ions in the acid solution is 0.01-0.05mol/L, and the concentration of hydroxide ions in the alkali solution is 0.03-0.125 mol/L. The method for treating the wastewater includes: treating the reverse osmosis membrane according to the above method, and then using the treated reverse osmosis membrane for wastewater treatment; or includes: modifying the reverse osmosis membrane in the process of wastewater treatment, wherein a modifying treatment method includes: adjusting the pH (potential of hydrogen) value of the to-be-treated wastewater, and enabling the pH value-adjusted wastewater to contact with the reverse osmosis membrane. Through the technical schemes, the method for improving the performance of the reverse osmosis membrane and the method for treating the wastewater have the advantages that the performance(especially concentration limit or concentration multiple) of the reverse osmosis membrane is improved effectively, and high concentration multiple of the reverse osmosis membrane can be maintained for a long time.

The invention discloses an achromobacter sp. for degrading lignin and application of the achromobacter sp. in lignin-containing wastewater treatment, and relates to the technical field of industrial wastewater treatment. The achromobacter sp. CCZU-WJ6 for degrading lignin is preserved in the China General Microbiological Culture Collection Center (CGMCC), and the preservation number of the achromobacter sp. is CGMCC NO.19017. The strain can be applied to degradation of industrial lignin-containing wastewater, and particularly, when the lignin-containing wastewater is degraded, the applicable degradation culture conditions are as follows: the temperature is 20-40 DEG C, the pH value is 4-9, and the concentration of treated lignin is greatly reduced. Compared with the traditional method, thestrain and the application method of the strain have the advantages of high treatment efficiency, wide application range, simple operation, low equipment requirement and obviously reduced operation cost, and solve the problems of complex procedure and carbon source requirement in fungus treatment of industrial lignin-containing wastewater.

The invention belongs to the technical field of photocatalytic oxidation, and discloses a method for regulating and controlling the activity of a catalyst by utilizing a continuous flow photocatalytic reaction device and application of the method. The method comprises the following steps: putting a diluent of a target pollutant into a liquid storage tank, and tightly connecting the liquid storage tank with a photocatalytic reactor through a silicone tube; according to the method, a single-channel peristaltic pump is used for controlling the water inlet flow rate to be 5-30 mL/min and the water outlet flow rate to be 1-15 mL/min respectively, it is guaranteed that the average water flow speed is 3-20 mL/min, the device operates in a continuous flow state, and a catalyst is continuously excited by ultraviolet light till target pollutants are completely oxidized. According to the method, the contact time of a target object and a catalyst is changed by adjusting the flow speed of a to-be-treated fluid at a water inlet and a water outlet under the condition that the target object is efficiently treated, so that the activity and the service life of the catalyst are regulated. The method can be used for research of related mechanisms such as catalyst deactivation and the like, and the fields of medical wastewater treatment, sewage treatment secondary effluent or deep purification of urban drinking water and the like.

The invention belongs to the field of wastewater treatment, and discloses a method for removing As (III) in wastewater by enhanced coagulation, which mainly comprises the following steps: (1) adding acertain amount of calcium peroxide into As (III) containing wastewater, and stirring; and (2) adding an inorganic coagulant to carry out coagulation treatment. According to the method, in the treatment process, on one hand, calcium peroxide plays a role of an oxidizing agent; As (III) is converted into As (V), and on the other hand, the pH environment in the water body solution is improved by utilizing slow hydrolysis of calcium peroxide in the water body solution, so that the pH in the coagulating sedimentation process is maintained at a slightly alkaline level beneficial to coagulating sedimentation, the coagulating efficiency is improved, and meanwhile, the efficient coagulating efficiency and oxidation efficiency are realized. The method is simple to operate and low in cost, does notneed additional equipment investment, and can be widely applied to advanced treatment of arsenic-containing industrial wastewater and treatment of arsenic-polluted underground water or drinking water.

The invention relates to the technical field of wastewater purification, and discloses a wastewater treatment nanofiltration device, which comprises a support frame and a water pump arranged on the support frame, wherein a plurality of mounting grooves arranged in an annular array shape are formed in the support frame, filtering cores for purifying wastewater are mounted in the mounting grooves, one ends of the filtering cores are connected in pairs through first connecting pipes, and one end, far away from the first connecting pipe, of one filtering core is communicated with a water pump through a pipeline and is connected with an external water source. During the use, the mounting frame can be driven to move through a driving assembly in a control member to further control the connectionbetween the filtering core and a third connecting pipe and the connection between the filtering core and a second connecting pipe, so that a user can conveniently control the wastewater purificationdegree according to the wastewater recycling purpose, and the problem that the wastewater purification degree far exceeds the use requirement to cause unnecessary loss of the filtering core at the rear position can be effectively avoided.

The invention provides a preparation method of a composite efficient coagulant for treatment of textile printing and dyeing wastewater, belonging to the technical field of wastewater treatment. The preparation method comprises the following steps: roasting fly ash, carrying out secondary acid leaching extraction, performing filtering, collecting filtrates, and combining the filtrates for later use; dissolving sodium silicate in a certain amount of deionized water, adjusting a pH value with hydrochloric acid, carrying out a reaction for 3-6 h, dropwise adding the filtrate and a cerium oxide solution, carrying out a stirring reaction for 10-15 min, adding chitosan, carrying out a reaction for 5-10 min, adjusting the pH value with sodium hydroxide, and carrying out a stirring reaction for 3-6h; adding disodium hydrogen phosphate into the reaction solution, and then carrying out stirring and heating to 40-50 DEG C; then, adding polydimethyldiallyl ammonium chloride and starch modified polyacrylamide, continuing stirring for a reaction for 1-2 h, performing standing, and carrying out curing for 20-25 h. According to the invention, a variety of coagulation components are matched with one another, so the composite efficient coagulant has good treatment effect on textile printing and dyeing wastewater, wherein the removal rate of COD achieves 94%, and the removal rate of TOC achieves97.9%; and the composite efficient coagulant has outstanding charge neutralization ability.

The invention discloses a wastewater treatment device with a stirring structure. The wastewater treatment device comprises a base, a device body and a filter tank, wherein the device body is mounted at the top of the base, a mounting box is mounted in the center of the top of the device body, a flocculation basin is mounted in the device body, the filter tank is mounted in the device body, a disinfection tank is mounted in the device body, and a water storage tank is mounted at the top of the base. The flocculation basin is mounted in the device body, a motor is mounted at the top of the device body, and large particles in wastewater are filtered by the grating, so guarantee is provided for subsequent wastewater treatment; and the motor runs to drive a rotating rod to rotate, the rotating rod drives stirring blades to stir wastewater in the flocculation basin, and gas is dispersed and discharged into sewage through aeration heads, so organic matters are fully adsorbed and degraded, aeration effect is improved, blockage can be avoided through the arrangement of a sewage outlet, and pollution to the environment is reduced.

The invention provides a bone gelatin wastewater treatment method. The bone gelatin wastewater treatment method comprises the following steps: S1, collecting liming workshop wastewater; s2, collecting wastewater of a pickling workshop; s3, collecting other wastewater in the production process; s4, all the wastewater is introduced into a comprehensive adjusting tank to be mixed, and mixed wastewater is obtained; s5, introducing the mixed wastewater into a reaction tank, adding Na2CO3, then adding polyacrylamide, and fully reacting to obtain a reaction solution; s6, carrying out solid-liquid separation on the reaction liquid, and feeding obtained sludge into a sludge tank for recycling and post-treatment; s7, the supernate enters a pH adjusting pool, dilute sulphuric acid is added, and a mixed solution is obtained after reaction; s8, enabling the mixed solution to pass through an anaerobic tank, an anoxic tank and an aerobic tank to obtain a treatment solution; and S9, introducing the treated liquid into a secondary sedimentation tank, separating, metering and discharging the supernatant, returning the settled sludge to an anaerobic tank, supplementing the sludge concentration, and carrying out dewatering treatment on the residual sludge. The bone gelatin wastewater treatment method disclosed by the invention is low in calcium ion content and small in impact on the biochemical environment.

The small wastewater treatment equipment comprises a bearing pipe, a functional main shaft is arranged in the bearing pipe, functional supports are rotationally installed at the two ends of the functional main shaft through bearings, and the functional main shaft is fixed in the bearing pipe through the functional supports. Compared with the prior art, the small wastewater treatment equipment for high-concentration wastewater has the advantages that stable and effective synchronous driving is provided, and meanwhile, continuous and effective functional pre-aeration treatment is carried out in the continuous wastewater conveying process; meanwhile, synchronous and effective mixing and turbulent flow are performed on the wastewater in the action process of the functional turbulent flow component; therefore, the wastewater conveyed in real time is effectively disturbed, and the real-time aeration effect is effectively improved, so that the high-concentration wastewater conveyed in real time is subjected to economical, effective and environment-friendly pretreatment, the real-time treatment efficiency of the high-concentration wastewater is effectively improved, and efficient treatment and use of the high-concentration wastewater are guaranteed.

The present invention provides a kind of composite immobilized enzyme material for repairing polluted water source and its preparation process. The composite immobilized enzyme material is prepared with inorganic carrier 60-70 wt%, fly ash 8-20 wt%, enzyme preparation 3-15 wt%, calcium oxide expander 0.5-0.7 wt%, Portland cement 8-20 wt%, and additive 0.5-2 wt%, and through weighing material, crushing, mixing, stilling to nitrify, pressing to form and drying. The present invention has simple production process, low cost and high water treating effect, and the composite immobilized enzyme material may be used in treating sewage and waste water widely.