化学需氧量和总有机碳在水质在线监测中的比较

化学需氧量（COD）和总有机碳（TOC）是定量表示水体受有机物污染的2个重要代表性指标。传统的COD在线监测方法在监测有机污染物方面存在一定的挑战，系统比较了COD和TOC在线监测方法在特殊水质中的应用。结果显示：TOC对难氧化有机物的氧化效率高达98%，高氯离子和无机还原性离子对TOC测量误差影响分别约为10%和7%。TOC可更直接、更准确地反映出水体受有机物污染的情况，最后对TOC指标在水质在线监测中的推广应用提出建议。     

地表水中TOC与COD换算关系研究

总有机碳(TOC)相对于化学需氧量(COD) 能够更全面地反映水体中有机物的污染程度,且TOC测定仪操作简单,数据准确。通过18个地表水水质自动监测站对水中有机污染物的COD与TOC监测数据的相关性研究,建立了TOC与COD之间的线性回归方程,为地表水的TOC监测代替COD监测提供了数据支持。     

大庆城市生活污水处理厂TOC与COD的相关性分析

总有机碳（TOC）相对于COD能够更全面地反映水体中有机物的污染程度，用TOC监测代替COD监测有利于实现监测仪器化、自动化．以大庆市东城区污水处理厂进水与出水为研究对象，建立了二者之间的线性回归方程     

印染废水中总有机碳与化学需氧量的相关性

通过测定水中TOC浓度，可综合性地判断废水中有机物污染的程度，也能全面、合理地了解废水中的有机污染物。现采用TOC4100燃烧氧化-非分散红外吸收测定仪，对几种印染废水进行分析测试，并通过对TOC值与COD值的比较，找出印染废水中TOC与COD的相关性。     

总有机碳的测定及其在染料废水监测中的应用

总有机碳能够完全反映水中有机污染程度,已被许多国家所采用,我国也将它列入“污水综合排放标准”中。文章采用德国耶那仪器有限公司的Multi N/C TOC分析仪,用燃烧氧化-非分散红外吸收法分别测定直接染料、活性染料、分散染料、还原染料废水的TOC,并测定相关废水的COD值。实践证明在同类特定染料废水中,TOC与COD之间具有较好的相关性,因此可用TOC监测染料废水污染程度,该方法快速、简便、准确度高。     

特定水质中BOD_5与COD相关性的探讨

化学耗氧量(COD)、生化需氧量(BOD)以及总有机碳(TOC)、总耗氧量(TOD),它们都是评价水质好坏的重要指标。COD是指示水体受有机物及无机还原性物质污染的主要指标,而水样受有机物污染是普遍的,因此化学耗氧量(COD)也可作为有机物相对含量的指标之一。生化需氧量(BOD)     

纺织印染废水中TOC值和COD值的相关性

论证了纺织印染废水中TOC值和COD值的相关性，建立了COD和TOC的相关关系式。通过对实测的TOC值和COD值进行的一系列数理统计显著性检验，证实了纺织印染废水中TOC值和COD值之间具有良好的相关性，但基于生产过程、设施装置和排污情况的差异，印染企业在运用COD和TOC的相关关系式时，应根据自身的具体情况，通过实验建立相应的回归方程。     

革基布废水中TOC和COD的相关研究

通过对革基布企业废水中CODcr和TOC测定结果相关性分析,结果表明,革基布企业的CODcr和TOC相关性良好,为污水中有机污染物的TOC监测代替COD监测提供了实践依据。     

中国部分城市自来水的总有机碳测定

自来水是城镇居民的主要生活用水来源,用总有机碳(TOC)方法可快速监测其有机污染情况,保障人民生活质量。测定了国内13个城市的自来水TOC值,一定程度上反映了当前国内自来水的有机污染现状。     

城镇污水处理厂TOC与COD相关性分析及应用

通过在线TOC水质自动分析仪方法与实验室COD方法比对，建立TOC-COD一元线性回归方程，且将其应用到上海市44家污水处理厂出水中TOC与COD值的转换，并在污水处理厂进行在线TOC水质自动分析仪及在线COD水质自动分析仪监测值比对实验。结果表明,TOC-COD一元线性回归方程相关系数r为 0.963，废水中TOC与COD值线性显著相关，通过上述回归方程将在线TOC水质自动分析仪监测值转化COD监测值与在线COD水质自动仪监测值进行相对误差比较，88.4％的数据满足《水污染源在线监测系统安装技术规范（试行）》（HJ/T 355－2007）规范要求；用上述转换方程换算上海市44家污水处理厂TOC值得到的COD值与实验室COD值进行误差计算， 87.3%的数据满足上述规范要求，验证了在线TOC值转换COD值在污水行业的适用性。     

水体中TOC与COD相关性研究

针对不同地区的地表水、生活污水和工业废水的TOC和COD进行了测试,对测定值进行线性回归分析。结果表明,不同类型的水体其TOC与COD均具有一定的相关性,尤其是生活污水和工业废水,TOC与COD相关性比较显著,在一定条件下可由测定的TOC值推算出COD值。     

COD and TOC analysis of leachate from a solidified organic waste

Several combinations of binders and absorbent additives were utilized to solidify a typical organic waste, API Separator sludge. The effectiveness of the materials was based on the waste leachability from the solidified samples. COD and TOC analyses were used to determine the organic content of the leachate samples.The ability of the COD and TOC analyses to assess waste leachability was limited. The inability of the COD and TOC tests to differentiate between organic compounds made the results difficult to interpret. This was due to organic contaminants from the solidification materials contributing to the COD and TOC contents of the leachates. Also, the COD test may have be influenced by reduced inorganic compounds contained in the flyash binder and the sludge. Representative samples for the TOC analysis were difficult to obtain for the leachates containing oils or suspended particles. It is recommended that the COD and TOC tests only be used as a screening method for determining solidified organic waste leachability and other methods need to be employed to obtain more accurate results.     

Influence of High Levels of Total Suspended Solids on Measurement of Cod and Bod in the Yellow River, China

Using the Yellow River, China, the study explores the problem of the use of COD and BOD₅ as water quality management parameters in the presence of very high levels of suspended sediment (TSS) that characterize this river. Although the amount of natural organic matter per unit of suspended sediment of the Yellow River is not high, the very high concentration of mineral sediment in the Yellow River results in a large concentration of organic matter, which artificially inflates the laboratory values of COD and, as a consequent, leads to greatly exaggerated reports of pollution of the Yellow River. BOD₅ can more accurately reflect the pollution of the Yellow River than COD; however, measured values of BOD under-report the actual values due to settling of the sediment in the incubation chamber resulting in values that are 21.6--38.3% less than the actual values. Therefore corrections are required for laboratory COD and BOD values so that the values are not artifacts of the sediment regime. Our work provides new insight into this phenomenon and demonstrates how correction factors may be determined and used with pollution data. Our work also suggests that the actual pollution levels of the Yellow River are probably not as high as reported by monitoring agencies.     

Assessing the feasibility of wastewater recycling and treatment efficiency of wastewater treatment units

Wastewater reuse can significantly reduce environmental pollution and save the water sources. The study selected Cheng-Ching Lake water treatment plant in southern Taiwan to discuss the feasibility of wastewater recycling and treatment efficiency of wastewater treatment units. The treatment units of this plant include wastewater basin, sedimentation basin, sludge thickener and sludge dewatering facility. In this study, the treatment efficiency of SS and turbidity were 48.35–99.68% and 24.15–99.36%, respectively, showing the significant removal efficiency of the wastewater process. However, the removal efficiencies of NH₃–N, total organic carbon (TOC) and chemical oxygen demand (COD) are limited by wastewater treatment processes. Because NH₃–N, TOC and COD of the mixing supernatant and raw water are regulated raw water quality standards, supernatant reuse is feasible and workable during wastewater processes at this plant. Overall, analytical results indicated that supernatant reuse is feasible.     

常州市老城区水体有机污染分布特征及原因初探

为了老城区河道的合理整治,采用总有机碳（TOC）分析仪对常州市老城区3条河流及区域内浅层地下水的14个采样点水样进行3个月的总有机碳含量检测。老城区水环境受到不同程度的有机污染,某些地下水的TOC含量高于地表水,原因为地表水补给地下水,且老城区水体污染源主要来源于周边地区的生活污水,并受到关河、雨水等的影响,这为常州市老城区水污染治理提供了依据。     

浅谈TOC与CODCr的关系

介绍了TOC和CODCr的含义，比较了TOC与CODCr测定方法、使用仪器的不同和各自的优缺点，并从理论上和实际水样测定中论述了TOC和CODCr的相关性。对于不同的废水，TOC 与CODCr的相关性不一样，必须先实验求出二者之间的关系。     

Performance of bioreactor landfill with waste mined from a dumpsite

Emissions from landfills via leachate and gas are influenced by state and stability of the organic matter in the solid waste and the environmental conditions within the landfill. This paper describes a modified, ecologically sound waste treatment technique, where municipal solid waste is anaerobically treated in a lysimeter-scale landfill bioreactor with leachate recirculation to enhance organic degradation. The results demonstrate a substantial decrease in organic matter (BOD 99%, COD 88% and TOC 81%) and a clear decrease in nutrient concentrations especially ammonia (85%) over a period of 1 year with leachate recirculation.