棘白菌素类抗生素发酵废水厌氧处理及高效脱色效果研究

发布时间：2018-04-01 04:00

本文选题：棘白菌素　切入点：抗生素废水　出处：《华东理工大学》2017年硕士论文

【摘要】：抗生素发酵废水具有COD高、色度大、抗生素残留高以及无机盐含量高的特点,属于难生物降解废水。对于棘白菌素类抗生素发酵废水的处理,目前还没有切之可行的高效处理工艺。本研究中采用厌氧生物法处理该废水,考察厌氧生物处理的最大污泥负荷以及碱度对厌氧处理效果的影响。对于厌氧间歇运行,还研究了时间与厌氧进程的关系,以及系统碱度对出水VFA分布变化规律的影响。对于废水色度的处理采用UV_(185nm)联合H_2O_2氧化法,考察处理该废水的最佳处理时间、pH、H_2O_2投加量以及探讨该废水的脱色机理。在本试验中,厌氧间歇运行批处理反应器的最大污泥负荷为0.854 kgCOD/(kgVSS·d),COD去除率达到84%以上。在进水COD为9500mg/L,总碱度为2000mg/L时,24h出水COD去除率为90.5%。UASB反应器的最大污泥负荷为0.413kgCOD/(kgVSS·d),当进水 COD 为 10000mg/L,HRT 为 16h 时,COD 去除率达到81%以上。当污泥负荷为 0.305COD/(kgVSS·d),进水 COD 为 10000mg/L,HRT 为 24h时,COD去除率达到92%以上。UV_(185nm)联合H_2O_2能够较好的实现棘白菌素类抗生素发酵废水的强化脱色处理,氧化效果明显优于UV_(185nm)单独光氧化系统,且H_2O_2的投加能够明显增强UV_(185nm)光氧化系统的脱色效果。在pH为2.5、照射时间为60min、H_2O_2投加量为5g/L、反应温度为室温条件下,UV_(185nm)联合H_2O_2氧化处理出水色度和COD去除率分别高达96.4%和46.9%。UV_(185nm)联合H_2O_2氧化系统对色度的去除依靠氧化过程中产生的沉积物实现。
[Abstract]:Antibiotic fermentation wastewater has the characteristics of high COD, high chroma, high antibiotic residue and high inorganic salt content, so it is difficult to biodegrade wastewater.At present, there is no feasible and efficient treatment process for the fermentation wastewater of acanthosin antibiotics.In this study, the anaerobic biological process was used to treat the wastewater. The maximum sludge load and the effect of alkalinity on the anaerobic treatment were investigated.For anaerobic intermittent operation, the relationship between time and anaerobic process, and the effect of system alkalinity on VFA distribution of effluent were also studied.For the treatment of wastewater chromaticity, H_2O_2 oxidation method was used to investigate the optimal treatment time of the wastewater and the dosage of H _ 2O _ 2 and the mechanism of decolorization of the wastewater.In this experiment, the maximum sludge load of anaerobic batch reactor is 0.854 kgCOD/(kgVSS / d and the removal rate is over 84%.When the influent COD is 9500 mg / L and the total basicity is 2000mg/L, the removal rate of COD in effluent is the maximum sludge load of 90.5%.UASB reactor for 24 hours. When the influent COD is 10 000 mg / L, HRT is 16 h, the removal rate of COD is over 81%.When the sludge loading was 0.305COD/(kgVSS DU and the influent COD was 10 000 mg / L HRT for 24 h, the removal rate of COD was more than 92%. UVV + 185 nm) combined with H_2O_2 could better realize the enhanced decolorization treatment of acanthoctonin antibiotic fermentation wastewater, and the oxidation effect was obviously superior to that of UVTAN alone photooxidation system.The addition of H_2O_2 can obviously enhance the decolorization effect of the photooxidation system.When pH is 2.5, irradiation time is 60 min, the dosage of H _ 2O _ 2 is 5 g / L, reaction temperature is room temperature, the chrominance and COD removal rate of the effluent treated by H_2O_2 oxidation are as high as 96.4% and 46.9% and 46.9% respectively. The removal of chroma by H_2O_2 system depends on oxidation process.The birth of sediment is realized.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X703

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