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

A method for treating and regenerating waste water from tobacco sheet production, comprising the following steps: slag removal→chemical decalcification→air flotation→anaerobic treatment→electrolysis→A / O treatment→secondary electrolysis→membrane treatment / biological aerated filter Biochemistry → triple electrolysis → desalination → regenerated water. Based on the combination of chemical decalcification technology, biochemical technology, electrochemical technology, BAF technology and membrane technology, the present invention has lower cost and higher efficiency. After the tobacco flake production wastewater is treated, 75% to 85% can be regenerated and recycled. Reduce waste water discharge, prevent waste water from polluting the environment, and reduce waste of water resources. It can also make the cost of regenerated circulating water lower than the price of tap water, which is economically reasonable and produces better economic benefits.

The invention discloses a method for improving biodegradability of organic silicon wastewater through two stages of ozone catalytic oxidation. The two stages of ozone catalytic oxidation are adopted for wastewater at different treatment stages, a two-stage biochemical treatment process is adopted, the two stages of ozone catalytic oxidation are set before two stages of biochemical treatment, thusby adopting an ozone catalytic oxidation process before the two stages of biochemical treatment, the biodegradability of the wastewater is improved, the purpose of decreasing effluent COD to 100 mg / lis achieved, the treatment cost is low, and operation is easy.

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 biochemical treatment method of organic silicon wastewater, including pretreatment, iron-carbon micro-electrolysis + FENTON-like advanced catalytic oxidation to increase the B / C value, and the effluent enters the flocculation sedimentation tank after adjusting the pH, and then enters The first-stage circulating flow biofilm hydrolysis acidification tank, the biomultiplication biofilm aerobic reaction tank, and then enters the sedimentation tank, the mud and water in the sedimentation tank are separated, the supernatant enters the ozone catalytic oxidation tower, and then enters the second-stage circulating flow biofilm hydrolysis acidification tank, two The biological multiplication biofilm aerobic reaction tank is used for biochemical treatment, and the effluent is discharged through the secondary sedimentation tank up to the standard. The invention has the advantages of greatly ensuring the stable and up-to-standard discharge of waste water, and at the same time greatly reducing the cost of traditional physical and chemical treatment, and providing a new idea for the treatment of organic silicon waste water.

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 relates to the technical field of industrial wastewater treatment, and specifically discloses a treatment method for piperonal production wastewater. The method for treating the piperonal production wastewater includes: adding 1,2-methylenedioxybenzene to the piperonal production wastewater, mixing uniformly, performing distillation, collecting fractions, and separating liquids to obtain recovered materials; cooling the remaining mother liquor from the distillation , After adjusting the pH to weak acidity, adding transition metal oxides, performing high-pressure pulse treatment, filtering, and treating the treated water through the sewage treatment system and discharging. The method for treating wastewater from piperonal production provided by the invention has the advantages of simple process operation and low energy consumption, and solves the problem that the reaction raw materials and reaction products in the wastewater cannot be recovered by the traditional treatment process, and the treated wastewater can reach the level of "Chemical Synthesis Pharmaceutical Industry" "Water Pollutant Discharge Standard" discharge standard, will not cause secondary pollution, realize the comprehensive treatment and resource utilization of wastewater, has high economic and environmental benefits, and has high promotion value.

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 an efficient wastewater treating process based on Fenton reaction, which comprises the following steps: adjusting the pH value of wastewater to be treated to 3-5; adding H2O2, mixing and stirring; adding FeSO4.7H2O by batch, adjusting the pH value of the wastewater to be treated to 3-5 before adding the FeSO4.7H2O every time, and stirring for 3-10min after adding the FeSO4.7H2O every time; adjusting the pH value of the treated wastewater to 7.5-8; adding flocculating agent, and removing flocculated sediment. The invention quantitatively adds dosage according to the wastewater condition, solves the problem that the treatment effect is influenced because of poor or excessive medicine, improves the use efficiency through adding ferrite by batch, lowers the consumption of the medicine and the sludge quantity, reduces the process procedure of treating residual H2O because of no residual of H2O, controls the hydroxy radical quantity produced immediately by adding H2Oin batch, and effectively treats high-COD and difficult-degradation organic wastewater.

The invention discloses a treatment process of landfill municipal sludge press filtering tail water, and belongs to the field of sewage treatment. The land resources in China are limited; when no proper treatment technology and no excessive regions are used for sludge landfill, the further volume reduction of the landfill sludge becomes the present searching direction. After chemical conditioning agents are added into the landfill sludge, the tail water subjected to press filtering has complicated ingredients and high contaminant contents; the treatment difficulty is high. By aiming at the pollution characteristics of the tail water, the existing advanced treatment technology can be combined; a combined process of blowoff, inclined pipe precipitation, hydrolysis acidification pool and two-stage biological aerated filter is used for realizing the effective treatment on the tail water with high ammonia nitrogen concentration, low C / N value, low B / C value and high chloride ion concentration; in addition, the operation and the management are simple; the removal effect is stable; the anti-impact load is high; the quantity of the generated sludge is small; the cost is low.

The invention relates to a pretreatment system and a pretreatment method for high-concentration wastewater from chemical synthesis and pharmaceuticals. The pretreatment system includes a grid adjustment tank connected in sequence, an oil separation sedimentation tank, a coagulation tank, an iron-carbon micro-electrolysis tank, It is characterized in that the coagulant in the coagulation tank includes amphoteric acrylamide copolymer. The amphoteric acrylamide copolymer is acrylamide obtained by copolymerizing hydrophobic cationic modified acrylamide and fumaric acid. The pretreatment system of the present invention does not require high-cost and high-energy-consumption processes such as ozone oxidation or concentrated evaporation to treat high-concentration wastewater. The B / C value of the treated wastewater is significantly improved, and the biodegradability of the wastewater is significantly improved, which is convenient for further processing. biochemical treatment.

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 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.