49results about How to "Save on medicine costs" patented technology

The invention relates to a processing method of stainless steel cold rolling pickling wastewater. The pickling wastewater enters a hexavalent chrome secondary reduction pool after the actions of micro-electrolysis and hexavalent chrome preliminary reduction of a scrap iron filtering pool; the reduced wastewater enters a front-segment precipitation tank after neutralization and aeration, heavy metal sludge is concentrated and dehydrated, and the heavy metal sludge and scrap iron after the use of the scrap iron filtering pool are recycled and used as stainless steel smelting raw materials; middle-segment precipitation is carried out after a primary supernatant acts with a precipitant, and dehydrated and dried fluoride sludge is recycled and used as a metallurgical adjuvant material; final-segment precipitation is carried out after a secondary supernatant continues to act with a flocculating agent to obtain calcium salt which can be used as a building material raw material; and after the three segments of precipitation of acidic wastewater, the final third level supernatant reaches a standard and is discharged through water quality regulation and sand filtering. The invention has the advantages of less investment, low wastewater processing cost, convenient maintenance and the like, and not only can effectively utilize discarded scrap iron of a stainless steel enterprise, but also can greatly lower the subsequent wastewater processing cost and the operating load.

The invention discloses a low-energy-consumption low-carbon-emission economical energy-saving urban sewage treatment method. The method comprises the steps that: 1, the to-be-treated wastewater is collected by a sewage pipe network and then is filtered by lattices, and is lifted by a pump to enter a pulse water distribution pot of a novel efficient turn-back anaerobic biochemical pool (ABR); 2, the swage subjected to the treatment in step 1 flows into a circulation-flow biological oxidization pool; 3 the effluent water from the step 2 flows into an artificial reinforced biological contact oxidization pool reconstructed by a water body from natural tunnels and reservoirs; and 4, the effluent water from the step 2 or the step 3 flows into constructed wetlands. After the sewage is treated by the above steps, the most pollutants in the water are effectively removed and the treated effluent water reaches the standard first-grade A in GB 18918-2002 ''Discharge standard of pollutants for municipal sewage treatment plant''. The energy-saving sewage treatment purification process with low cost, low energy consumption, low carbon emission and low operating cost is particularly suitable for the sewage treatment in small towns or rural areas.

The invention provides an intelligent precise dosing system for a denitrification deep-bed filter carbon source. The system is used for acquiring at least one parameter thereof on the basis of different phases of running to provide control signals for a dosing metering pump, wherein during the first phase, a control signal for the dosing metering pump is generated according to theoretical calculation and on the basis of the acquired COD (chemical oxygen demand), flow, dissolved oxygen, temperature and pH value signals, and the parameters on which calculation is based every time, and the calculation results are stored as historical records; during the second phase, searching and matching are carried out according to the historical parameters accumulated during the first phase so as to generate a control signal for the dosing metering pump; and during the third phase, curve fitting is carried out on the historical parameters accumulated during the first phase and the second phase, the control value of the dosing metering pump is used as an unknown function, the acquired signal parameters are used as control functions, an empirical calculation formula is obtained by fitting, and a control signal for the dosing metering pump is calculated according to the empirical formula.

The invention provides a self-cleaning MBR flat sheet membrane module and a cleaning method thereof. The self-cleaning MBR flat sheet membrane module comprises a plurality of flat sheet membrane elements (1) stacked at intervals and a framework (2) used for fixing the flat sheet membrane elements (1), wherein the edges of the flat sheet membrane elements (1) are provided with at least two aerator pipes (3), and the aerator pipes (3) are provided with a plurality of nozzles (31) ejecting gas towards the flat sheet membrane elements (1). With the self-cleaning MBR flat sheet membrane module and the cleaning method thereof, self-cleaning of the MBR flat sheet membrane module in operation is realized, and anti-pollution capability of the module is greatly improved. During long-term operation, the MBR flat sheet membrane module does not need cleaning, and even, on-line chemical cleaning can be cancelled; thus, the usage amount of chemical agents is reduced, operation flux of the MBR flat sheet membrane module is effectively ensured, and stability of long-time running of an MBR system is improved.

The invention relates to the field of environmental protection and sewage treatment, in particular to an anaerobic-anoxic-hypoxic integrated reactor. The anaerobic-anoxic-hypoxic integrated reactor is characterized in that: the anaerobic-anoxic-hypoxic integrated reactor comprises an anaerobic zone (3), an anoxic zone (4), a hypoxic aeration zone (5), a degasification zone (6), a sedimentation zone (7), a water inlet pipe (1), a sludge removing pipe (13) and a water outlet pipe (17); the anaerobic zone (3), the anoxic zone (4), the hypoxic aeration zone (5), the degasification zone (6) and the sedimentation zone (7) are sequentially arranged along the direction of water flow and are communicated by underwater holes; the sedimentation zone (7) is provided with the sludge removing pipe (13) and the water outlet pipe (17); as a water distribution tank (2) is provided, the proportion of sewage entering the anaerobic zone (3) and the anoxic zone (4) can be flexibly adjusted; in addition, a movable zone partition plate (20) is provided and can adjust the volume as well as functional location of the anaerobic zone (3) and the anoxic zone (4). The invention can effectively solve the problems of poor effect of synchronously removing nitrogen and phosphorus, insufficient carbon sources, high energy consumption and the like during the running of the traditional A2O reactor.

The invention relates to a pretreatment method of glass fiber wastewater, which comprises the following steps: B. a kieselguhr solution is added in a glass fiber wastewater reaction pool so as to be fully reacted with the wastewater; C. the wastewater is pumped to an air flotation water purifier, a coagulant aid is added into the intake of the air flotation water purifier, the wastewater and the coagulant aid are mixed with part of small bubbles which carry positive charges and are produced by a gas-dissolving system, so that the small bubbles can be adsorbed by pollutants in the coagulant aid and the wastewater, can enter an air flotation water distribution system in a bridging way and can realize solid-liquid separation. Following the step C of the invention, a step D can also be set, which removes scum pollutants floating after separation, solid materials flow automatically to a scum pool, and clear water separated to the bottom is automatically discharged into a clear water pool. A step E can also be set after the step D, wherein, the scum in the scum pool is sent to a sludge dewatering system by a sludge pump for carrying out dewatering treatment. The method of the invention reduces the occupation area of a wastewater pretreatment plant, saves costs on wastewater treatment, and causes the glass fiber wastewater to reach the national third-level discharge standard by one-time physicochemical treatment.

The invention discloses a restoration process for polluted soil containing hexavalent chromium. The restoration process is applicable to coarse grained soil. The restoration process comprises the following steps that 1, the polluted soil is subjected to grain diameter grading treatment and dehydrated, and polluted soil grain mud with the grain diameter smaller than or equal to 1 mm is finally obtained; 2, polluted soil grain mud with the grain diameter smaller than or equal to 1 mm is subjected to an acidizing reduction reaction, and the hexavalent chromium is reduced to be trivalent chromium; and 3, an alkaline reagent is added for adjusting the mud containing the trivalent chromium to be alkaline, filter pressing and dehydration are carried out, and a mud cake obtained after dehydration is recycled. The polluted soil is subjected to reduction grain diameter grading treatment at first to enable pollutant to be transferred to fine grained mud with the grain diameter smaller than 1 mm, then, chemical reduction medicament is added, chemical medicament is greatly saved, the trivalent chromium is recycled, soil environment risks are eliminated, and meanwhile certain economic benefits are obtained. Meanwhile, according to the restoration process, water is adopted for reduction screening, the restoration cost is reduced, and secondary pollution to the environment is small.

The invention relates to the technical field of chromate waste water treatment, and in particular discloses a method for reclaiming chromic acid and water from chromeplating rinse water. The method comprises the following steps: rinsing chromium-plated parts from a coating bath in a first-level washing reclaiming tank, a second-level washing reclaiming tank until the last-level washing reclaiming tank in turn; refluxing the rinse water in the last-level washing reclaiming tank to the previous level reclaiming tank in turn and finally to the first-level washing reclaiming tank; overflowing the chromium-containing rinse water in the first-level washing reclaiming tank to a circulating reclaiming tank, and heating the rinse water to a temperature of 50 DEG C by a heating device; pumping the rinse water into a vacuum evaporator by a circulating pump so that the water content is evaporated and chromic acid concentrated solution is left at the bottom of the evaporator; refluxing the chromic acid concentrated solution to the circulating recovery tank, and performing circulating evaporation in the vacuum evaporator again; and pumping finally concentrated chromic acid into a chrome-plating bath for reclaiming by a chromic acid reclaiming pump. The top of the vacuum evaporator is connected with a condensate water reclaiming tank through an ejector vacuum pump, and a cooling device in the condensate water reclaiming tank condensates water vapor into liquid water which is overflowed to the last-level washing reclaiming tank from the condensate water reclaiming tank for recycling. The method can recycle the chromic acid and the water in the chromeplating rinse water on line, save the significant cost required by a chemical method control, and reclaim resources.

The invention provides an optimization control apparatus for denitrification carbon source addition in the AO process. The apparatus comprises an A pool, an O pool, a first pipeline, a second pipeline, a third pipeline, an agitator, a water inlet flowmeter, a water inlet COD analyzer, a water inlet ammonia nitrogen analyzer, a dissolved oxygen instrument, a first nitric acid nitrogen sensor and determinator, a second nitric acid nitrogen sensor and determinator, a frequency conversion internal reflux pump, a central control system, a carbon source addition flowmeter, a frequency conversion carbon source addition pump and a carbon source box. The problems of poor denitrification stability, low efficiency and feedback delay existing in a traditional biological A/O denitrification technologyare solved, and the problems existing at present that the control precision is insufficient, the carbon source waste is easily caused, the production cost is increased, and the water output which is stably up to the standard is difficult to be ensured are also solved.

The invention belongs to the technical field of oil recovery, and particularly relates to an inorganic gel deep profile control and flooding method in a high salt oil reservoir. The inorganic gel deepprofile control and flooding method includes the steps that first, the composition analysis of injected water ions is carried out, based on the analysis results, the concentration of Na2CO3 needed toremove Ca<2+> and Mg<2+> from injected water is calculated, finally, the injected water is mixed with the Na2CO3 in proportion, a gravity or rotational flow method is used for removing CaCO3 and MgCO3, and softened water is obtained; a main agent Na2SiO3 solution and isolation solution are prepared by the softened water; and at least five rounds of alternating injection are adopted to inject theisolation solution, the main agent, the isolation solution and the injected water into the oil reservoir sequentially. The chemical reaction between Ca<2+> and Mg<2+> in the injected water and the added Na2SiO3 in the deep part of the high permeability oil reservoir is used for forming inorganic gel CaSiO3 and MgSiO3 so that the purposes of the permeability of a high permeability layer and the diversion of deep solution flow can be achieved.

The invention discloses an emergent riverway water treatment device which comprises a dosing system, a magnetic efficient precipitation system and a dehydration system. The dosing system comprises a first reaction stirring box, a second reaction stirring box, a third reaction stirring box and a reagent storage tank, and stirrers are arranged in the reaction stirring boxes. The magnetic efficient precipitation system comprises a precipitation pond and a magnetic powder separator. The dehydration system adopts a volute dehydration machine. The emergent riverway water treatment device is good in treatment effect, outlet water is equivalent to ultra-filtered outlet water, the emergent riverway water treatment device utilizes large specific gravity and micro-magnetic field effect of the magnetic powder, a flow is short, the whole treatment process can be completed within 10 minutes, the impact-resistant load capability is strong, and the emergent riverway water treatment device can still stably operate under the condition of high water yield or high pollution load. The emergent riverway water treatment device is small in occupied area, is integrated to be a container type device, is convenient to move and flexible in operation, low in investment cost and long in service life, and the device cost, construction cost and operating cost are low.

The invention discloses a coal-fired power plant desulfurization wastewater resource treatment system and a coal-fired power plant desulfurization wastewater resource treatment method. The system comprises a concentration electrolysis three-chamber reactor, a desulfurization system, a pre-sedimentation tank, a magnesium resource reaction clarification tank, a heavy metal reaction clarification tank, a sulfate radical deep removal reaction clarification tank, a neutralization tank, an ultrafiltration system, a nanofiltration system, a reverse osmosis system, a calcium hydroxide feeding system,a coagulant and coagulant aid mixed feeding system, a sulfate radical composite precipitator feeding system and a hydrochloric acid feeding system, wherein an electrodialysis cathode, an electrolysisinert electrode cathode, an electrodialysis anode membrane, an electrodialysis cathode membrane, an electrolysis inert electrode anode and an electrodialysis anode are sequentially arranged in the concentration electrolysis three-chamber reactor. With the system and the method, the investment cost and the operation cost can be reduced, and the resource acid production and alkali production of desulfurization wastewater can be achieved.

The invention discloses a method for impurity-bearing liquid calcium chloride by the utilization of converter dedusting wastewater. Materials for the production of the impurity-bearing liquid calcium chloride comprise the converter dedusting wastewater, a pickling waste liquid and dust or carbide slag. The method comprises the following steps of: a, examining mole concentration of HCl in the pickling waste liquid and mass percentage of CaO in the dust or carbide slag; calculating mole number of the added converter dedusting wastewater, dust or carbide slag and pickling waste liquid required by each unit volume of an impurity-bearing CaCl2 solution according to the mole concentration of the impurity-bearing CaCl2 solution which is expected to be prepared and according to the formula of CaO+2HCl=CaCl2+H2O, and calculating the volume of the added converter dedusting wastewater and the pickling waste liquid and the weight of dust or carbide slag which are required by each unit volume of the impurity-bearing CaCl2 solution according to the mole concentration of HCl in the pickling waste liquid and mass percentage of CaO in dust or carbide slag; b, preparing an emulsion by the use of the dust or carbide slag and the converter dedusting wastewater in an emulsion preparation pot; c, respectively adding the emulsion prepared from the step b, the pickling waste liquid and the converter dedusting wastewater into a neutralization pond; and d, allowing the solution obtained from the step c to flow into a settler for static settlement. The clear upper layer is the impurity-bearing liquid calcium chloride solution.

The invention relates to a method for regulating the quality of washing water for flue gas in a steel-making converter, which is an optimized regulation proposal of softening method of sodium carbonate by analyzing and determining the relationship between regulation of water alkalinity and hardness. The method for regulating the quality of washing water for flue gas in the converter comprises the following steps: when two times of a P alkalinity value is smaller than/equal to a M alkalinity value, NaOH is added into the washing water for flue gas in the converter, until two times of the P alkalinity value is larger than the M alkalinity value, which means 2P is larger than M and P is not equal to M; when P is equal to M, the sodium carbonate is added into the water, wherein, the P alkalinity value is the alkalinity measured by applying phenolphthalein as indicator and is phenolphthalein alkalinity, and the M alkalinity value is the alkalinity measured by applying methyl orange as indicator and is the total alkalinity. The system of washing water for flue gas in the converter adopts a manner of total recycle. The method can cause the quality of the washing water for flue gas in the converter to reach good softening effect and can solve the problem of scaling in the system of washing water for flue gas in the converter, which adopts total recycle with zero discharge to reduce pollution.

The invention provides a method for treating wastewater of methyl methacrylate produced by an isobutylene oxidation method. The method comprises the following steps: adjusting the pH value of MMA production wastewater to be 10-10.5, stirring and reacting for a certain time, strengthening the self-polymerization reaction of aldehyde substances, and mixing and homogenizing the reacted wastewater with other production wastewater. The homogenized wastewater is subjected to super-efficient shallow air floatation to remove most of aldehyde self-polymers with inhibition effect on growth of microorganisms, and the inhibition effect on biochemical treatment is reduced. Nutrient salt is added into the gas floating effluent to enter an improved UASB anaerobic reactor for anaerobic biochemical treatment, the trace element nutrient salt helps to improve the volumetric load and COD removal efficiency of the anaerobic reaction, and the wastewater subjected to the anaerobic biochemical treatment is treated by an A/O aerobic biochemical treatment and an O3/H2O2 oxidation method, so that the standard discharge is finally achieved. The method provided by the invention has the advantages of strong pertinence, high treatment efficiency, stable and reliable water yielding and the like.

The invention relates to a method for treating high-solid-content organic wastewater by anaerobic-aerobic deep coupling. The method comprises the following steps: crushing and screening organic wastes, adding a slurry liquid obtained by filtration into an anaerobic reaction unit, and carrying out anaerobic fermentation to obtain biogas and biogas slurry; introducing anaerobic outlet water into a solid-liquid separation unit for solid-liquid separation, and enabling separated biogas residues to return into the anaerobic reaction unit through a sludge backflow pump; enabling separated biogas slurry to enter an aerobic reaction unit, and removing nitrogen through a synchronous nitrification and denitrification process; and enabling part of outlet water of the aerobic reaction unit to flow back to the anaerobic reaction unit and undergo full dilution and mixing with organic waste raw slurry liquid for an anaerobic reaction, and enabling the other part of the outlet water to enter a next treatment process or be discharged after reaching the standard. According to the method, the anaerobic outlet water enters the solid-liquid separation unit, suspended solids are separated out, outlet water enters the aerobic reaction unit, the DO value in the water body of the aerobic reaction unit is well controlled, denitrification is completed, then a backflow ratio of aerobic outlet water is controlled and part of the aerobic outlet water returns to the anaerobic reaction unit again, the reaction is circulated, the anaerobic biogas production rate is increased, and meanwhile the water quality of the aerobic outlet water is higher.

The invention relates to a treatment method of nitrile glove production technological waste water, and belongs to the technical field of organic waste water treatment. The method comprises is characterized in that the waste water sequentially passes through a grating, a water collecting well, an initial sedimentation tank, a first-stage air flotation machine, a regulating tank, an ozone oxidationtank, a hydrolytic acidification tank, a first-stage A tank, an O tank, a second-stage A tank, a second-stage air floatation machine and a clear water tank, and the waste water is finally discharged after standards are reached. The method has the advantages that the operation cost is low, the operation is simple, suspended solid, COD, total nitrogen and the like in a nitrile glove production technology can be efficiently removed, and finally the waste water reaches the first-level A discharging standard of <Discharge Standard of Pollutants in Urban Sewage Treatment Plant> (GB 18918-2002).

The invention discloses a sulfur autotrophic nitrogen sulfur double-removing process in a sewage treatment plant. Nitrate nitrogen is contained in effluent of the sewage treatment plant, and hydrogensulfide is contained in biogas generated through sludge digestion of the sewage treatment plant, the effluent is mixed with the biogas (and adding alkali), the hydrogen sulfide is dissolved in the effluent, and desulfurization of the biogas is realized; and the effluent dissolved with the hydrogen sulfide is subjected to sulfur autotrophic denitrification reaction, denitrificationof the effluent is realized.

The invention discloses a sintering flue gas activated carbon desulfurization process acid-making wastewater recycling system and a method thereof. The system comprises a first-stage reaction tank, wherein the first-stage reaction tank is sequentially connected with a second-stage reaction tank, a third-stage reaction tank, a preheater, a climbing film heater, a vacuum evaporator, a crystallizer,a centrifugal machine and a multi-layer fluidized bed dryer through a main pipeline; wherein the first-stage reaction tank is respectively connected with an ammonia water pipe and an acid-making wastewater pipe, the second-stage reaction tank is connected with an ammonia water pipe, the third-stage reaction tank is connected with an aeration pipe or a double-ammonia-water pipe, and the first-stagereaction tank and the second-stage reaction tank are both connected with the multilayer fluidized bed dryer; the method comprises the following steps: firstly, pretreating acid-making wastewater, andthen recycling sulfur and nitrogen elements; and finally, drying activated carbon sludge, heavy metal sludge and ammonium sulfate crystal particles. The method is small in occupied area, small in investment and easy to implement on site.