共查询到19条相似文献,搜索用时 46 毫秒
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采用兼氧-好氧生物处理工艺,对某化工厂的苯胺基乙腈放心水处理进行了试验研究,并用化常常同淀法对生化处理出水中的NH3-N进行处理,试验结果表明,当进水CODCr为1000-2000mg/l,NH3-N为300mg/l时,出水CODCr为200-300mg/l,NH3-N为30mg/l,处理出水能达到作为化工生产工艺回用冷却水的要求。 相似文献
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河北某化学公司产生的高浓度苯胺废水可生化性极差,废水处理难度大.采用动态微电解/生化法进行处理,处理规模为200 m3/d.运行结果表明,当进水pH值为6~12、COD为20000~23000 mg/L、BOD5为2000~3000 mg/L、色度为500~600倍、SS为400~500 mg/L时,处理出水pH值为6~9、COD≤100 mg/L、BOD5≤30 mg/L、色度≤50倍、SS≤100 mg/L,出水水质达到<污水综合排放标准>(GB 8978-1996)的一级标准.该工程直接运行成本为11.2元/m3. 相似文献
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物化+生化法处理工业废水的试验研究初探 总被引:1,自引:0,他引:1
摘要苯胺基乙腈化工废水是一种高浓度难降解的有机废水,通过静置结晶法对原水进行预处理,然后采用兼氧-SBR工艺对稀释废水进行生化处理,并达到预期效果。 相似文献
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Fenton试剂强化铁炭微电解预处理高浓有机废水 总被引:8,自引:0,他引:8
研究了Fenton试剂法强化铁炭微电解工艺对高浓度难生化有机废水的预处理效果。结果表明,当原水COD在9000mg/L、铁炭微电解反应时间为100min、pH值为2.2时,铁炭微电解对原水COD的去除率〉45%;铁炭微电解出水再投加240mg/L的H2O2(30%)进行Fenton试剂法处理,常温下反应50min对原水COD的去除率可提高到75%以上。铁炭微电解+Fenton试剂联合工艺的除污效果好、运行稳定、成本低廉,适宜对高浓度难生化有机废水的预处理。 相似文献
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以新疆乌兰林格有机膨润土处理葡萄酒废水,在单因素吸附试验的基础上,采用L9(34)正交试验法确定有机膨润土吸附处理葡萄酒废水的最佳工艺条件为:当废水用量为50mL时,有机膨润土用量1.2g、废水pH值5、吸附时间60min、振荡速度为190r/min。葡萄酒废水经有机膨润土处理后,水质清澈透明,CODCr、BOD5的去除率分别为60%和79%,各项指标达到国家规定的城镇污水二级排放标准。 相似文献
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为研究三维电极/电-Fenton法对降解苯胺废水的影响因素,以优化三维电极/电-Fenton法处理苯胺废水的工艺条件,在自制三维电极电解槽中,以苯胺废水为处理对象,分别研究溶液的pH值、Fe~(2+)投加量、电解质(Na_2SO_4)投加量、曝气量四种因素对三维电极/电-Fenton法降解苯胺效果的影响情况。试验结果表明:当电解反应时间达到60min,电解电压为15V,极板间距为8cm时,控制溶液体系的pH值为3.0,Fe~(2+)浓度为0.7mmol/L,电解质投加量为1.8g/L,曝气量为0.8m~3/h,对苯胺和COD的去除率最高可达89.85%和90.69%。三维电极/电-Fenton法处理苯胺废水的效果较好。 相似文献
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Onsite wastewater treatment is used by 20% of residences in the United States. The ability of these systems, specifically soil treatment units (STUs), to attenuate trace organic chemicals (TOrCs) is not well understood. TOrCs released by STUs pose a potential risk to downstream groundwater and hydraulically-connected surface water that may be used as a drinking water source. A series of bench-scale experiments were conducted using sand columns to represent STUs and to evaluate the efficacy of TOrC attenuation as a function of hydraulic loading rate (1, 4, 8, 12, and 30 cm/day). Each hydraulic loading rate was examined using triplicate experimental columns. Columns were initially seeded with raw wastewater to establish a microbial community, after which they were fed with synthetic wastewater and spiked with 17 TOrCs, in four equal doses per day, to provide a consistent influent water quality. After an initial start-up phase, effluent from all columns consistently demonstrated >90% reductions in dissolved organic carbon and nearly complete (>85%) oxidation of ammonia to nitrate, comparable to the performance of field STUs. The results of this study suggest STUs are capable of attenuating many TOrCs present in domestic wastewater, but attenuation is compound-specific. A subset of TOrCs exhibited an inverse relationship with hydraulic loading rate and attenuation efficiency. Atenolol, cimetidine, and TCPP were more effectively attenuated over time in each experiment, suggesting that the microbial community evolved to a stage where these TOrCs were more effectively biotransformed. Aerobic conditions as compared to anaerobic conditions resulted in more efficient attenuation of acetaminophen and cimetidine. 相似文献
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A novel process termed as bioevaporation was established to completely evaporate wastewater by metabolic heat released from the aerobic microbial degradation of the organic matters contained in the highly concentrated organic wastewater itself. By adding the glucose solution and ground food waste (FW) into the biodried sludge bed, the activity of the microorganisms in the biodried sludge was stimulated and the water in the glucose solution and FW was evaporated. As the biodegradable volatile solids (BVS) concentration in wastewater increased, more heat was produced and the water removal ratio increased. When the volatile solids (VS) concentrations of both glucose and ground FW were 120 g L−1, 101.7% and 104.3% of the added water was removed, respectively, by completely consuming the glucose and FW BVS. Therefore, the complete removal of water and biodegradable organic contents was achieved simultaneously in the bioevaporation process, which accomplished zero-discharge treatment of highly concentrated organic wastewater. 相似文献
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城市污水中有机污染物的分布 总被引:1,自引:2,他引:1
以城市污水为对象,以0.45μm滤膜,对水中污染物进行分类,利用高效液相色谱(HPIC)对污水中的溶解态有机物分子量分布进行分析,指出该采用的分析方法具有实用价值,研究结果可为城市污水处理工艺的选择提供依据。 相似文献
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UASB-BCO工艺处理低浓度生活污水的试验研究 总被引:2,自引:0,他引:2
采用配制的低浓度有机废水对低温条件下,UASB-BCD工艺处理生活污水进行了研究,结果表明水温在8℃~25℃的条件下,HRT在6.83h左右时,COD,BOD5的去除率分别可达93.58%,94.53%左右,证明了UASB-BCO在低温条件下处理城市生活污水效果稳定,处理时间短,容积负荷高。 相似文献
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针对传统石灰沉淀法和单独氯化钙沉淀法在处理电镀含氟废水时存在的不足之处,研究了微电解-氯化钙沉淀法在处理该废水时的相关技术参数。试验结果表明,该方法具有污染物去除效率高、药剂成本低、卫生条件好、运行稳定可靠等优点,并得出微电解的最佳工艺条件为:保持废水pH值不变;铁碳比为1:1;废水在微电解反应器中停留时间为25min。氯化钙沉淀的最佳工艺条件为:沉淀反应pH值为7~8范围内,氟化钙的投加量为380mg/L。 相似文献