42results about How to "Increase B/C value" patented technology

The invention discloses efficient heterogeneous catalytic oxidation ferric-carbon micro-electrolysis packing and a preparation method thereof. The packing is prepared from the following raw materials in parts by weight: 45-65 parts of pure iron powder, 10-25 parts of cast iron powder, 2-8 parts of graphite powder, 5-15 parts of active carbon powder, 2-10 parts of copper powder, 2-10 parts of manganese powder, 2-10 parts of aluminum powder, 2-10 parts of fine wood bits, 1-6 parts of sodium silicate, 1-6 parts of sodium borate, 2-6 parts of pyrite dust and 5-15 parts of an adhesive. The efficient heterogeneous catalytic oxidation ferric-carbon micro-electrolysis packing disclosed by the invention is prepared by taking heterogeneous metal alloy with high potential difference as a catalyst and using a high-temperature micropore roasting technology and has the characteristics of heterogeneous metal and ferric-carbon integration, micropore framework type alloy structure, large specific surface area, low density, strong activity, high current density and the like; organic wastewater is treated so that COD, ammonia nitrogen and total phosphorus can be efficiently removed, the chroma can be reduced, the biodegradability can be improved, the treatment effect is extremely stable, and the phenomena of packing passivating, hardening and the like caused in the operation process can be avoided.

The invention relates to a treatment, regeneration and cyclic utilization method for tobacco sheet production wastewater. The method comprises steps of slag removal, chemical decalcification, air floatation, anaerobic treatment, electrolysis, A/O treatment, secondary electrolysis, membrane treatment/aeration biological filter biochemical treatment, third electrolysis, desalination in sequence to obtain reclaimed water. The method combines a chemical decalcification technology, a biochemical technology, an electrochemical technology, a BAF technology and a membrane technology. The method has low cost and high efficiency. 75%-85% of the tobacco sheet production wastewater can be regenerated, cycled and utilized after being treated, thereby reducing wastewater discharge, protecting the environment from being polluted by the wastewater, reducing water resource waste, and allowing the cost of the recycled water to be lower than the cost of tap water. The method is economic and reasonable, and can produce good economic benefit.

The invention provides a treatment method of tobacco sheet production wastewater. The treatment method comprises the following steps of: removing slag, carrying out chemical de-calcification, carrying out anaerobic treatment, carrying out electrolysis, carrying out A/O treatment, carrying out secondary electrolysis, biochemically processing by using a biological aerated filter, and disinfecting and treating sludge. The treatment method of tobacco sheet production wastewater is used for treating the tobacco sheet production wastewater by combining a chemical de-calcification technology, a biochemical technology, an electrochemical technology and a BAF (Biological Aerated Filter) technology, so that the cost is lower and the efficiency is higher, and therefore, the wastewater can be exhausted after reaching the standards.

The invention discloses a device and a method for treating organic waste water through combination of an anode filter bed and a cathode filter bed. The device is used for treating poisonous and organic waste water with high concentration by using an electrochemical oxidation process through combination of the anode filter bed and the cathode filter bed so as to realize effective degradation of the organic waste water, wherein pollutants in the waste water undergo oxidation reaction in the anode filter bed to be oxidized and degraded, and simultaneously a packing filled in the anode filter bed has adsorption, interception and degradation effects on the organic pollutants; a special cathode material is adopted in the cathode filter bed, and the pollutants can be oxidized and degraded through strong oxidizing property of the special cathode material capable of generating lots of OH free radicals; through application of the device, a manner of horizontally arranging electrodes according to a conventional electrolytic process is changed, and the electrodes are vertically connected in series, and the vertical series connection contributes to effective degradation of the waste water in two stages; the device is wide in the range of application and can be used for pretreatment and advanced treatment in an organic waste water biochemical treatment process and single electrolysis of the high-concentration organic waste water; and the device can promote realization of pollution control on the organic waste water.

The invention discloses an electrolysis unit with a membrane filtration function and relates to an electrolysis unit. The electrolysis unit is provided with a shell and an electrode set, wherein a water inlet and an air inlet are arranged on the bottom part of the shell, and the water inlet is connected with a water inlet pipeline through a pipeline; the air inlet is connected with an aerating apparatus through a pipeline; an overflow opening and a drain outlet are respectively arranged on the upper part and the lower part of the shell, and the overflow opening and the drain outlet are connected with an external blow-off line through pipelines; the electrode set is provided with a bracket, a cathode, an anode and a water outlet; the electrode set is fixed on the shell through the bracket,the cathode is a metal membrane component with filtering and separating functions, and the anode is one of metal anode, alloy anode, carbon anode and titanium anode, and the like; and a connecting plate connected with a power supply is arranged on one end of the cathode, an anode binding post and a cathode binding post are arranged on the connecting plate, a filtration water collecting pipe and afiltration back wash pipe are arranged on the other end of the cathode, the filtration water collecting pipe is connected with a water suction pump, and the filtration back wash pipe is sequentially connected with a back wash pump and a chemical feed pipe. The electrolysis unit integrates electrolysis and membrane filtration functions.

The invention provides a nano-catalysis, electrolysis, flocculation and air-floatation device. A coagulative precipitation tank, a primary air-floatation tank, an electrolytic air-floatation tank and a slag-discharging tank are arranged in a housing of the device, wherein the top of the coagulative precipitation tank is provided with a water inlet and a mixer; the bottom of the coagulative precipitation tank is communicated with the primary air-floatation tank; a side sewage-draining outlet is connected with a sewage-draining pipe; a dissolved gas release pipe is arranged at the edge of the primary air-floatation tank; the sewage-draining outlet is connected with the sewage-draining pipe; the upper portion of the inner side of the primary air-floatation tank is communicated with the electrolytic air-floatation tank; the electrolytic air-floatation tank is divided into an upper layer and a lower layer by an upper-lower separator plate; a slag-scraping device is arranged in an upper gas-liquid separation chamber; an electrolytic cell is mounted between the upper layer and the lower layer of the electrolytic air-floatation tank; the bottom of the electrolytic cell is fixed on the inner bottom of the casing; the top of the electrolytic cell is open and horizontal with the top of the upper-lower separator plate; an electrode is installed in the electrolytic cell; and an interval between an anode and a cathode of the electrode serves as a water passage. The device integrates multiple functions of electrolysis, flocculation precipitation, air-floatation and the like together, has high automation degree, sewage-discharging efficiency and low running cost, and is convenient for operation and maintenance.

The invention relates to a pharmaceutical wastewater treatment system and in particular relates to a comprehensive treatment system for fermented antibiotic pharmaceutical wastewater. The system can be used for pre-treatment, biochemical treatment and advanced treatment of fermented antibiotic pharmaceutical wastewater, so that the stability of the anaerobic system is improved, the anaerobic investment is reduced, the anaerobic efficiency is improved, and moreover, in the advanced treatment stage, hardly degraded pollutants are removed through Fenton catalytic oxidation reaction, so that the wastewater is discharged by reaching the standard.

The invention discloses a processing production and use method of a microelectrolysis filler for wastewater treatment. The prepared microelectrolysis filler consists of the following raw materials: iron powder, inert carbon powder, a binding agent, a surfactant A10, and trace amounts of molybdenum powder and chromium powder. The microelectrolysis filler disclosed by the invention can solve the problems of hardening, passivation, activation and difficulty in replacement of the filler adopted by the conventional microelectrolysis sewage treatment process.

The invention relates to a treatment and regenerative cyclic utilization device for tobacco sheet production wastewater. The treatment and regenerative cyclic utilization device comprises a mechanical coarse-grille water collecting basin, a rotary fine-grille machine, a regulation pool, a primary decalcification reaction pool, a secondary decalcification reaction pool, a primary sedimentation tank, a filtering device, a coagulation tank, an air flotation tank, a UASB (Upflow Anaerobic Sludge Blanket) anaerobic tank, an electrolyzer a, an anaerobic pool, an aerobic pool, a secondary sedimentation tank, an electrolyzer b, a membrane treatment device or biological aerated filter, an electrolyzer c, a water supply pump, a desalting device, a reclaimed water storage tank, a sludge tank, a sludge dewatering device, an accident pool, a gas collection device and a marsh gas storage tank. The treatment and regenerative cyclic utilization device has the advantages that on the basis that chemical decalcification techniques, biochemical techniques, electrochemical techniques, BAF (Biological Aerated Filter) techniques and membrane technologies are combined, the cost is lower, and the efficiency is higher; after the tobacco sheet production wastewater is treated, 75-85% of the tobacco sheet production wastewater can be utilized in a regenerative and cyclic manner, so that the discharge of the wastewater is reduced, the environmental pollution caused by the wastewater is avoided, and the waste of water resources is reduced; and the cost of reclaimed recycled water can be lower than the price of tap water, so that the reclaimed recycled water is economical and reasonable, and a better economic benefit is generated.

The invention relates to a process device for waste water generated in tobacco sheet production. The process device comprises a machinery coarse screen collecting tank, a rotary grillage machine, a floatation tank, a primary decalcification reaction tank, a secondary decalcification reaction tank, a coagulating basin, a primary settling tank, a regulating tank, a hydrolysis acidification pool, a UASB (upflow anaerobic sludge blanket) anaerobic pool, an electrolysis machine a, an anoxic pool, an aerobiotic pool, a medium settling tank, an electrolysis machine b, an MBR (membrane biological reactor) system, an electrolysis disinfection tank, a sludge tank, a sludge dewatering tank, an accident pool, a gas collecting device and a methane storing tank. The process device is based on the combination of a chemical decalcification technology, a biochemical technology, an electrochemical technology and an MBR technology, thus having low cost and high efficiency, and the discharged waste water reaches the standard.

The invention discloses a method of treating sodium hydrosulfite wastewater, comprising: oxidizing and biochemically treating sodium hydrosulfite wastewater to produce low-COD wastewater; particularly, sodium hydrosulfite wastewater is subjected to pH adjustment to 1.5-2.5 via an acid, oxidized, subjected to pH adjustment to 6-10 via an alkali and then subjected to a series of biochemical treatment means to obtain low-COD wastewater; through the method, it is possible to enable the sodium hydrosulfite wastewater to meet the provisions of emission standards.

The invention provides a glass fiber wastewater reusing and processing method and system. The method comprises following steps: subjecting wastewater to primary flocculation and sedimentation; processing wastewater by an aerobic biological treatment system; subjecting wastewater to secondary flocculation and sedimentation; oxidizing wastewater by ozone; aerating wastewater in a bio-filter; filtering wastewater; adsorbing wastewater; and carrying out ultrafiltration and reverse osmosis. The aerobic biological treatment system is adopted, and an active sludge method and a bio-film method are integrated to efficiently remove COD in wastewater. The carbon and color of wastewater are efficiently removed by an ozone oxidation technology; the salt content of wastewater is not increased; through adsorption and ultrafiltration, the quality of water introduced to a reverse osmosis membrane can be guaranteed, thus the reverse osmosis membrane will not be polluted, and the reusing of the glass fiber wastewater is realized efficiently.

The invention discloses a combinative processing method of high-concentration acrylic acid and ester wastewater, and belongs to the technical field of processing of high-concentration organic wastewater. The method provided by the invention adopts a combinative process of ultrasonic-method preprocessing, an anaerobic method, a two-stage aerobic method and ultrasonic-method deep processing for processing high-concentration acrylic acid and ester wastewater with a COD (Chemical Oxygen Demand) value larger than 40,000mg/L, wherein the ultrasonic-method preprocessing is carried out by adopting two stages; the relatively-high-frequency processing is first adopted; afterwards, the low-frequency processing is adopted; processed outlet water has a COD smaller than 60mg/L and is up to the national grade-1 discharge standard in Integrated Wastewater Discharge Standard (GB8978-1996).

The invention relates to a method for improving the dye adsorption capacity of a latex particle extract of latex wastewater. The method is characterized by comprising the following steps of conductingconcentrating with an ultrafiltration membrane; adding high-valence metal ions into a concentrated solution to form the insoluble latex particle extract; dehydrating and pulverizing the extract; adding NaHCO3 for mixing and conducting ultrasonic treatment for 20-40 min; conducting vacuum drying at 80-90 DEG C; conducting heat treatment under the protection of N2 and utilizing different kinds of latex particles as support for one another at different temperatures and a gas expansion effect to form a porous substance; using a dilute acid solution for dissolving out the high-valence metal ions and carbonate generated by decomposition and then conducting washing, filtering and drying to obtain a porous adsorbent, so that the adsorption capacity for cationic dyes is improved. The method can beused for decolorizing cationic dyeing residual liquid and wastewater.