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1.
测定污水中磷时,特别是餐饮行业污水,消解后浊度大.本文作者利用活性炭脱色进行了实验研究.  相似文献   

2.
两级SBR工艺处理小城镇生活污水的试验研究   总被引:4,自引:0,他引:4  
采用两级SBR1工艺对小城镇生活污水进行了试验研究。结果表明,先通过SBR1反应器对污水起到平衡,均化作用。再通过SBR2反应器实现污水的脱氮除磷,使出水CODcr浓度为21-43mg/L。去除率达到85%-93%;出水NH3-N浓度为3.3-9.5mg/L,去除率达到65%-81%;出水TP浓度为0.32-0.63mg/L,去除率达到87%-95%。  相似文献   

3.
随着石油开采、炼制及其污水处理工艺的不断改进 ,油田污水中含有各种成分复杂的添加剂 ,严重干扰水样测定。针对某些油田污水氯化物分析过程中出现的问题 ,根据高锰酸钾在碱性条件下不能氧化水中氯离子的原理 ,选择用碱性高锰酸钾氧化法进行前处理 ,可有效解决其干扰问题。采用《水和废水监测分析方法 (第 3版 )》中硝酸银滴定法直接测定某些油田污水中氯化物时 ,会出现如下现象 :在用硝酸银溶液滴定水样时 ,开始滴入硝酸银数滴 ,溶液便出现砖红色 ,停止滴定后 ,砖红色逐渐转黄 ,难以判断终点。初步判断为有机或无机还原性物质的干扰 ,用氢…  相似文献   

4.
污水中油的采样方法探讨   总被引:2,自引:0,他引:2  
本文讨论了污水中油的采样和结果计算方法。实验表明,污水中油主要以浮油形式存在。油含量的结果主要与所采污水水体表面积有关,结果计算应该考虑水体总体积。  相似文献   

5.
石莹 《干旱环境监测》1994,8(3):160-162
探讨了一种简便的医院污水BOD测定中样品稀释倍数的推算方法。首先测定CODCr值,由CODCr值除以系数8,即获得稀释倍数C=CODCr/8。结果表明,该法仅需配制一个稀释比,省时省力,并具有可靠性好,准确度高,适应性强等优点。适用于各种医院污水中BOD的分析监测。  相似文献   

6.
有机污水生物脱氮除磷的生化机理、影响因素及工艺   总被引:2,自引:0,他引:2  
重点介绍有机污水用生物法脱氮除磷的生化机理,同时叙述了该法的影响因素及工艺,指出该法因工艺简单、灵活和处理能力强,已成为近年来污水处理的重要方法并得到广泛应用。  相似文献   

7.
通过污灌对土壤,农作物,地下水污染调查试验及试验论证,预测分析了污水处理厂污水资源化后对环境的影响。  相似文献   

8.
根据多年来用标准法测定总磷浓度的经验,经多次实验研究对比,认为采用“在水样呈色后再进行定量稀释”的方法测定高浓度总磷水样,可大大缩短时间,节省人力物力,有利于样品的批量分析,克服原方法中的不足。  相似文献   

9.
用萃取光度法测定污水中挥发酚时,因预料不到其浓度高低,常出现水样挥发酚浓度超过测定上限(0.12mg/L)的情况,影响测定结果。对于这种情况,通常采用少取试样,稀释后重新放入蒸馏瓶中进行蒸馏,再萃取的方法(称标准法)。此法不但费时、费事,而且不利于大批样品的应急监测。多年来,根据标准法测定水中挥发酚浓度的经验,我们采用一种改进测定高浓度挥发酚的方法,即在蒸馏完毕后,将馏出液定量稀释,再萃取,测定吸光度的方法(称本法)。对2种方法进行对比试验的结果表明,本法不仅省时、省事,而且其精密度和线性关系均令人满意。1 实验部分1.1 仪…  相似文献   

10.
微生物技术处理饮食服务业含油污水的实验研究   总被引:2,自引:0,他引:2  
通过3次采自乌鲁木齐市鸿春园饭店不同时期排放的污水,经培养筛选出的28株具有较强除油能力的菌种回接污水后,其平均除油率达68%,其优选菌种回接污水24h后的除油率达90%,而同批污水自然存放10d后的除油率仅为29%。采用选培优良菌种集中快速处理,可以显著提高此类污水的处理效率。  相似文献   

11.
The effects of a sewage effluent with no treatment on the mesozooplankton structure and the environmental quality were evaluated in the Bahía Blanca Estuary, during June to November 1995. The highest values of particulate organic matter, nutrients and specially phosphate, were observed in the effluent discharge zone. In addition, taxa richness, mesozooplankton abundance and Shannon diversity values were lower in the sewage discharge area compared with the less polluted area. Eurytemora americana and Acartia tonsa as well as larvae of Balanus glandula, Neohelice granulata and Spionidae were found in the discharge area with lower densities. These results highlight the importance of sewage effluent effects on mesozooplankton community providing background data to use in other monitoring programmes.  相似文献   

12.
奎屯市城市污水的处理现阶段采用一级处理后接生物稳定塘的处理工艺是较为适宜的,但要注意做好污水及处理水的排放监测,加强排水管理,今后要逐步完善为规范的二级处理工艺。对污水处理要制定切实可行的水污染防治规划,不拘泥于现有的排水方案和污水处理厂选址,在污水厂下游建设规范的污水库作为处理水资源化利用的必要措施。我区多数城市水污染防治路线与奎屯市有着相似性,对各城市污水处理方式及利用途径可采用此方法进行深入细致的研究论证,为未来城市污水的有效处理及无害化、资源化利用打下基础。  相似文献   

13.
污水处理厂氮排放特征   总被引:3,自引:1,他引:2  
为了更好地掌握污水处理厂运行和排放情况,在全国南方、北方分别选取3个省共11个城市122家污水处理厂,于2013年8—10月进行了专项监测。结果表明:75?4%的污水处理厂氨氮出水质量浓度小于2 mg/L,氨氮平均去除率达90?2%,但总氮的平均去除率仅为55?5%,污水处理厂排水中仍存在较多非氨氮形态的氮污染进入环境。氨氮排放达标的污水处理厂中,有约20%的总氮排放未达标。65?5%的污水处理厂出水氨氮占总氮的比例低于10%,而84?4%的污水处理厂进水中氨氮占总氮的比例高于50%。总氮是影响污水处理厂达标排放的主要污染因子。  相似文献   

14.
简述了小城镇战略定位及污水处理重要性和紧迫性,指出我国小城镇污水处理的现状及压力,分析了适宜于小城镇污水处理的生态塘组合处理工艺作为一项高效实用的环保技术的优势和发展趋势,并通过生态塘湿地系统在南京汤泉镇污水处理中的应用实例分析,介绍了构建生态塘系统的关键设计参数及其工艺特点,为小城镇生态保护与建设污水处理厂提供技术支撑和示范样板。  相似文献   

15.
水体中TOC与COD相关性研究   总被引:18,自引:3,他引:18  
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。  相似文献   

16.
浅谈日本琵琶湖水环境治理经验   总被引:1,自引:0,他引:1  
介绍了日本琵琶湖水环境的治理经验。详细闸述了当地政府对生活排水、工业污水和农业排水3个主要污染源的控制和治理措施,此外,还介绍了入湖河流的直接净化措施。  相似文献   

17.
从城考结果看城市污水处理的发展趋势   总被引:5,自引:0,他引:5  
分析了我国十年来重点城市污水处理的发展和现状 ,以及污水处理存在的问题 ,对“十五”期间城市环境综合整治定量考核中城市生活污水处理率和城市生活污水的处理水平提出新的要求  相似文献   

18.
通过对上海市3家城镇污水处理厂主要污水处理工艺臭气收集处理装置进出口有组织排放和二沉池等敞开液面无组织排放氨采样,研究污水处理厂氨气排放特征,建立污水处理厂分季节本地化氨排放系数,并计算2019年上海市城镇污水厂氨排放量。结果表明:3家污水处理厂氨排放系数平均为4.8 mg/m3,其中污水处理环节氨排放系数为3.3 mg/m3,污泥处理环节氨排放系数为1.5 mg/m3。2019年上海市城镇污水处理厂氨排放量为10.3 t。  相似文献   

19.
In the peri-urban areas of central India, sewage water is a valuable resource for agricultural production. In this study, impact of domestic sewage water irrigation for 5 years on Vertisol with no previous history of sewage irrigation was investigated in an ongoing field experiment at Bhopal (India) under subtropical monsoon type climate. The wheat (Triticum aestivum) crop was grown during post-rainy winter season with 30 cm of irrigation (groundwater or sewage water) and four nutrient treatments (T1, 0; T2, 100%; T3, 50%; and T4, 50% of general recommended doses of NPK + FYM at 10 Mg/ha). Results showed that sewage irrigation of about 150 cm over a period of 5 years resulted significant increases in salinity as well as available fractions of N, P, K, and micronutrients, viz., Zn, Fe, and Mn in soils. Carbon and phosphorus applied through sewage water were accumulated more in subsoil layer compared to topmost plough layer. Soil microbiological activity, as indicated by soil respiration, microbial biomass C, as well as dehydrogenase enzyme activity was higher in sewage water-irrigated soils. There was also significant increase in fungal and actinomycetes as well as total coliform population in such soils. Nutrients supplied through sewage water were not able to raise the productivity of wheat to the level that obtained through fertilizers at the recommended level which indicated that additional nutrients through fertilizers are required to obtain higher productivity of wheat under sewage farming. Protein and Zn content in wheat grains were more when the crop was grown with sewage irrigation. Overall results show that except for increase in coliform population, short duration (5 years) of municipal sewage water irrigation did not have any appreciable harmful effect on soil quality as well as crop productivity; rather, it proved beneficial in improving soil fertility, wheat productivity, and produce quality.  相似文献   

20.
Information contained in the recent Review of the Health of the Oceans carried out by the UN Joint Group of Experts on Scientific Aspects of Marine Pollution (GESAMP) is used in formulating monitoring requirements together with different aims of monitoring defined within the framework of the International Council for the Exploration of the Sea (ICES).The development is largely based on the concept of an interfaceflux model, which defines zones of interaction between oceanic processes and human activities. This is supplemented by consideration of biogeochemical cycles which describe the cycling of substances and may help elucidate specially important processes and fluxes. A definition of specific monitoring needs is obtained. Consideration is given separately to a series of waste or contaminant categories: sewage, organochlorines, petroleum, metals and radionuclides. Implications in relation to the design of an integrated monitoring scheme include: the need to take into account interactions between land, sea, and atmosphere; the desirability to combine monitoring type observations with scientific studies, e.g. for the determination of fluxes; the necessity to take into account the frequencey of occurrence and rate of natural processes.This note is to a large extent based on the first GESAMP Review of the Health of the Oceans, with my own interpretation in some cases, and with additional input from other sources. An attempt has been made to bring out information from the Review relevant in relation to monitoring considerations.  相似文献   

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