1, para ester physicochemical properties
Also known as para-ester of (β- ethyl sulfone sulfate) aniline, vinyl sulfone sulfate, 4-ethyl sulfate sulfone aniline, -β- hydroxy ethyl sulfone aniline sulfate of hydroxy ethyl sulfone aniline -β- sulfate. English called para-ester, formula C8H11O6NS2, a molecular weight of 281.31. CAS No. 2494-89-5. Appearance off-white powder.
Para 1 wastewater treatment grease, United Technologies
Electro acoustic technology is based on electrochemical oxidation degradation by ultrasonic cavitation effect to improve the efficiency of an electrochemical oxidation degradation of co-processing technology. Environmental and Biological Engineering, Chongqing Technology and Business University Gao Yu and other ultrasonic synergistic electrochemical oxidation process aniline solution, investigated the effects of ultrasonic time, aniline concentration, pH, electrolysis voltage, electrolyte concentration on aniline degradation rate. The results show that: under the combined effects of ultrasonic and electrochemical, aniline degradation rate of degradation over extended time and increased concentration of aniline either low or high acoustic power combined effect complete removal of aniline just about 30min, electrochemical alone completely removed aniline in about 120 min; low initial concentration of aniline, the higher the degradation rate; with the increase of pH value, reducing the lead to improve degraded aniline, pH value of 10 or so highest degradation rate of aniline; Na2SO4 electrolyte concentration of aniline degradation rate has little effect: the electrolysis voltage in the range of 4 ~ 12 V, aniline degradation rate increase with increasing line voltage, voltage of 16V, the degradation rate. Acoustic electrochemical degradation techniques do not ask electrode. Even if the initial concentration and the system, pH, voltage, and other degradation vary within a wide range. A relatively short time to achieve the desired degradation rate, and thus degradation of sound power as an efficient and simple wastewater treatment technologies have some potential applications.
Para 2 grease wastewater treatment, photocatalysis
Sonophotocatalytic technology is based on semiconductor-based photocatalytic degradation by ultrasonic cavitation improve the photocatalytic efficiency of a co-processing technology. Zhongshan University Antai Cheng et aniline and its derivatives for the study, to explore the effects of different organic compounds structure on ultrasonic photocatalytic degradation. Aniline and its derivatives were carried out a series of Sonophotocatalytic, ultrasound and photocatalytic degradation of comparison, the results showed that: Although the vast majority of aniline and its derivatives ultrasound photocatalytic reactions are not necessarily all there is a synergistic effect, Sonophotocatalytic but its rate is higher than average, respectively, and ultrasonic photocatalytic degradation reaction rate.
Para 3 grease wastewater treatment, one pair of adsorption catalytic oxidation technology
One pair of adsorption catalytic oxidation technology after the adsorbent waste water under ultraviolet light and a catalytic oxidizer dual processing technique. After Geng Chunxiang and other Petroleum University of aniline, nitrobenzene wastewater use Adsorbing, re-use of hydrogen peroxide as the oxidant, oxidative degradation in the dual catalytic ferrous ion and ultraviolet light, and the effects of ferrous ion concentration, too the concentration of hydrogen peroxide and other factors affect the degradation of light. The results show that under the experimental conditions, aniline, nitrobenzene wastewater treated by the system 12h, the removal rate of up to 99.7% and 95.3%, respectively.
Para 4 wastewater treatment grease, biochemical pressure
Biochemical pressure is based on traditional biochemical methods, biochemical system by increasing the pressure to increase the partial pressure of oxygen, thus improving oxygen transfer system performance, effectively overcome the traditional biochemical processing of oxygen delivery restrictions a waste water treatment new technology. Currently, the removal of aniline mainly physicochemical method, Aniline wastewater treatment and biochemical pressure also rarely reported. Zhejiang University Lei Caihong, Kim Chan Fang and aniline as target pollutants studied biochemical degradation of aniline pressure behavior, while the operating conditions of the reaction system were optimized. The results showed that when the influent CODcr was 2000mg / L, pressure control in 0.10MPa, aeration rate of 7.5m3 / (m3.h), after 8.0h aeration, water CODcr≤300mg / L, CODcr removal rates up to 85%. Biochemical pressure by increasing the system pressure, the oxygen transfer rate increases, effectively overcome the limitations of biochemical oxygen transfer process, with removal efficiency and low sludge production rate higher pollutants. Referring specifically http://www.dowater.com additional technical documentation.
5 para grease wastewater treatment, beam radiation degradation technology
Electron beam irradiation degradation technique is a use of advanced oxidation f Advanced Oxidation Processes, AOPsl a radiation technology to degrade wastewater technology. Wang Min and other Shanghai Institute of Applied Physics aniline derivatives aniline specific object studied degradation processes and characteristics of aniline solution by electron beam irradiation after the absorbed dose were investigated, the initial concentration, the initial solution pH value and the addition of hydrogen peroxide and other factors on radiation degradation of aniline. Experimental results show that the electron beam irradiation can effectively degradation in aqueous solution of aniline, aniline when the initial concentration of 70mg / L, absorbed dose of 23.7 kGy (Gy, Gv: 1 Qianke energy is absorbed ionizing radiation is irradiated 1J (J) when called 1Gy, namely: 1Gy = lJ / kg), the aniline degradation rate of 9l%, COD removal efficiency up to 27%.
1, para ester physicochemical properties