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Indian journal of environmental health最新文献

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Adsorption of arsenic on flyash. 粉煤灰对砷的吸附。
Indian journal of environmental health Pub Date : 2003-01-01
P B Nagarnaik, A G Bhole, G S Natarajan
{"title":"Adsorption of arsenic on flyash.","authors":"P B Nagarnaik,&nbsp;A G Bhole,&nbsp;G S Natarajan","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Studies on removal of AS(III) by adsorption on flyash and activated carbon powder have been carried out at room temperature (30 +/- 1 degrees C). The adsorption isotherm of AS(III) on flyash and activated carbon powder was obtained in a batch reactor. Various parameters such as pH, initial concentraction of adsorbate and absorbent dose were studied. The experimental adsorption data fitted reasonably well to the Langmuir and Freunlich isotherms for both the adsorbents. Activated carbon has been observed to have greater adsorptive capacity than flyash.</p>","PeriodicalId":84892,"journal":{"name":"Indian journal of environmental health","volume":"45 1","pages":"1-4"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"24162699","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Assessment of slow sand filtration system for rural water supply schemes--a case study. 慢砂过滤系统在农村供水方案中的评价——一个案例研究。
Indian journal of environmental health Pub Date : 2003-01-01
R Ravindar Rao, R C Reddy, K G Rama Rao, P S Kelkar
{"title":"Assessment of slow sand filtration system for rural water supply schemes--a case study.","authors":"R Ravindar Rao,&nbsp;R C Reddy,&nbsp;K G Rama Rao,&nbsp;P S Kelkar","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In India, water supply programmes form a part of National Development Plans and are implemented in a phased manner under the Five-Year Plans. A number of departments and ministries of the Central and State Governments have been vested with the responsibility for water supply and sanitation. Due to inherent advantages of slow sand filters over conventional rapid sand filters, the Panchayat Raj Engineering Department (PRED), Government of Andhra Pradesh has designed and constructed a number of slow sand filter plants for rural water supply schemes in the state. At the instance of Netherland Assisted Project (NAP) Office, Hyderabad, NEERI undertook a critical evaluation of the functioning of three slow sand filter plants in Andhra Pradesh and suggested improvements in construction, operation and maintenance (O&M) including a review of design criteria followed by PRED. The paper presents the outcome of these studies along with suggestions needed to bring about improvements in source protection, design, construction, O&M of slow sand filter and training programme to improve the quality of supervision.</p>","PeriodicalId":84892,"journal":{"name":"Indian journal of environmental health","volume":"45 1","pages":"59-64"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"24162605","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Treatment of chrome plating wastewater (Cr+6) using activated alumina. 活性氧化铝处理镀铬废水(Cr+6)
Indian journal of environmental health Pub Date : 2003-01-01
Sudipta Sarkar, Anirban Gupta
{"title":"Treatment of chrome plating wastewater (Cr+6) using activated alumina.","authors":"Sudipta Sarkar,&nbsp;Anirban Gupta","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Suitability of activated alumina for removal of hexavalent chromium from electroplating wastewater has been investigated. Activated alumina exhibited good sorption capacity for hexavalent chromium and pH has no pronounced effect on the sorption capacity. Both batch and column adsorption studies have been carried out and an adsorption column design indicated reasonable depth of column for practical application.</p>","PeriodicalId":84892,"journal":{"name":"Indian journal of environmental health","volume":"45 1","pages":"73-82"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"24162607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An improved method for defluoridation. 一种改进的除氟方法。
Indian journal of environmental health Pub Date : 2003-01-01
Ganesh I Muthu, V Vinodhini, G Padmapriya, K Sathiyanarayanan, P C Sabumon
{"title":"An improved method for defluoridation.","authors":"Ganesh I Muthu,&nbsp;V Vinodhini,&nbsp;G Padmapriya,&nbsp;K Sathiyanarayanan,&nbsp;P C Sabumon","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Fluoride is a naturally occurring toxic mineral present in drinking water and the root cause of many diseases and disorders. Present international drinking water standard set by World Health Organisation (WHO) for fluoride is 1.5 ppm. In order to find the wide spread concentration of fluoride in drinking water of fluoride contaminated aquifer, 30 bore well water samples have been collected from different villages of Natrampalli Union which comes under Tiruvannamalai Circle, Tamil Nadu, India. In the present work, an attempt to remove fluoride by the use of coagulant, Poly Aluminium Chloride (PAC) was made and is compared with the most common existing technique \"Nalgonda Technique\" where there was a reversible reaction. The coagulant used in Nalgonda technique is Alum [(Al2SO4)3]. Results of the present work show that Poly Aluminium Chloride (PAC) can be an effective coagulant for the removal of fluoride from water with a higher removal efficiency of about 75 - 85% in less detention time and also observed that the fluoride removal was dependent on initial fluoride concentration and dose of coagulants.</p>","PeriodicalId":84892,"journal":{"name":"Indian journal of environmental health","volume":"45 1","pages":"65-72"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"24162606","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Physico-chemical and biological investigations of River Umshyrpi at Shillong, Meghalaya. 梅加拉亚邦西隆Umshyrpi河的物理化学和生物学研究。
Indian journal of environmental health Pub Date : 2003-01-01
N S Rajurkar, B Nongbri, A M Patwardhan
{"title":"Physico-chemical and biological investigations of River Umshyrpi at Shillong, Meghalaya.","authors":"N S Rajurkar,&nbsp;B Nongbri,&nbsp;A M Patwardhan","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>River Umshyrpi is the major river in Shillong that passes across the city. Domestic waste, solid waste, agricultural run off from surrounding areas are entering into the river bodies through different drains. Water samples from various sites were collected and analysed for physico-chemical and biological parameters to assess the quality of the river system. The study reveals that physico-chemical parameters are within the permissible limit whereas the biological parameters are found to exceed the permissible limit which indicate unpotability of water for drinking purposes.</p>","PeriodicalId":84892,"journal":{"name":"Indian journal of environmental health","volume":"45 1","pages":"83-92"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"24162608","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spent ion exchange resin-its treatment from the point of view of safe disposal. 从安全处置的角度谈废离子交换树脂的处理。
Indian journal of environmental health Pub Date : 2003-01-01
K S Seshadri, S S Raj, K B Lal
{"title":"Spent ion exchange resin-its treatment from the point of view of safe disposal.","authors":"K S Seshadri,&nbsp;S S Raj,&nbsp;K B Lal","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Ion exchange process is one of the treatment methods for radioactive waste. The resin becomes no longer useful after number of cycles of usage. At the same time the regenerated resin cannot be considered as non active waste for disposal. Hence it is felt necessary that the regenerated resin is treated in a fashion so as to result in a form which can be considered as inactive material. It is possible to convert this spent resin into multivalent ionic form which are generally non leachable, thus providing the necessary properties for meeting the disposal criteria. Studies were carried out for the exchange of radioactive ions on these resins with ions like Al3+, Sn4+, Pb2+ and Fe3+ etc. The studies included leachability aspects, exchange with other active ions, thermal characteristics, compressive strength of the cement blocks loaded with the resin etc. Our studies indicated that the order of the stability of the resin with respect to properties like leachability, exchange properties etc. follow the trend as follows: Sn4+ > Pb2+ > Al3+ > Fe3+.</p>","PeriodicalId":84892,"journal":{"name":"Indian journal of environmental health","volume":"45 1","pages":"21-4"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"24162600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The study of temporal and spatial trends of water qulity of river Kshipra using water quality index. 基于水质指数的克希普拉河水质时空变化趋势研究。
Indian journal of environmental health Pub Date : 2003-01-01
Aditya Tyagi, M K Sharma, K K S Bhatia
{"title":"The study of temporal and spatial trends of water qulity of river Kshipra using water quality index.","authors":"Aditya Tyagi,&nbsp;M K Sharma,&nbsp;K K S Bhatia","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Water quality index (WQI) plays an important role in interpreting the information on water quality trends of a water body. In the present study, an attempt has been made to study the spatial and temporal water quality trends of one of the pristine river Kshipra (Madhya Pradesh) using water quality index. The importance of existing sampling sites has also been discussed.</p>","PeriodicalId":84892,"journal":{"name":"Indian journal of environmental health","volume":"45 1","pages":"15-20"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"24162702","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Reorganization of water distribution system of Greater Jammu using computer software OPT DIS. 利用计算机软件OPT DIS对大查谟供水系统进行重组。
Indian journal of environmental health Pub Date : 2003-01-01
Indrani Gupta, Jagdish Bassin, Prakash Kelkar, Apurba Gupta
{"title":"Reorganization of water distribution system of Greater Jammu using computer software OPT DIS.","authors":"Indrani Gupta,&nbsp;Jagdish Bassin,&nbsp;Prakash Kelkar,&nbsp;Apurba Gupta","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Water supply in old Jammu city is not evenly distributed due to undulating terrain and increase in population density. A study was undertaken to suggest measures for improvement to the distribution system. The paper presents results of analysis carried out using computer package OPT DIS developed at NEERI for optimal design of distribution sytem including system augmentation and reorganization measures needed for the design year 2021. The analysis of zone 1 of the distribution network indicates that seven pipes need alteation to cater to the demand for the year 2006 and fifteen pipes need replacement for the year 2021. New pipelines (13 nos.) are to be provided in parallel to the existing pipes in Upper Reach and 28 pipes in Lower Reach to ensure the service standards of 225 lpcd with minimum residual head of 17 m. Efficient algorithm for augmentations of water supply systems comprising combination of dead-end and loop network are having much wider application in developing countries. The software OPT DIS developed at NEERI was found to be extremely powerful and user friendly for addressing such systems with varying demand pattern, peaking factor, pipe condition, water supply modes and design horizones.</p>","PeriodicalId":84892,"journal":{"name":"Indian journal of environmental health","volume":"45 1","pages":"39-48"},"PeriodicalIF":0.0,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"24162603","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modelling of Buckingham Canal water quality. 模拟白金汉运河的水质。
Indian journal of environmental health Pub Date : 2002-10-01
S A Abbasi, F I Khan, K Sentilvelan, A Shabudeen
{"title":"Modelling of Buckingham Canal water quality.","authors":"S A Abbasi,&nbsp;F I Khan,&nbsp;K Sentilvelan,&nbsp;A Shabudeen","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The paper presents a case study of the modelling of the water quality of a canal situated in a petrochemical industrial complex, which receives wastewaters from Madras Refineries Limited (MRL), and Madras Fertilizers Limited (MFL). The canal well known Buckingham Canal which passes through Chennai (Madras), India has been modelled using the software QUAL2E-UNCAS. After testing and validation of the model, simulations have been carried out. The exercise enables forecasting the impacts of different seasons, base flows, and waste water inputs on the water quality of the Buckingham Canal. It also enables development of water management strategies.</p>","PeriodicalId":84892,"journal":{"name":"Indian journal of environmental health","volume":"44 4","pages":"290-7"},"PeriodicalIF":0.0,"publicationDate":"2002-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"23270806","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Toxicity of a rice field herbicide in some nitrogen-fixing algae. 稻田除草剂对某些固氮藻类的毒性。
Indian journal of environmental health Pub Date : 2002-10-01
A S Ahluwalia, M Kaur, S Dahuja
{"title":"Toxicity of a rice field herbicide in some nitrogen-fixing algae.","authors":"A S Ahluwalia,&nbsp;M Kaur,&nbsp;S Dahuja","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The incorporation of diquat into cultures of Nostoc muscorum and Cylindrospermum sp. Proved to be highly toxic. The range of various concentrations employed varies from 1 microgram/ml 15 micrograms/ml. Relatively higher does (above 5 micrograms/ml) reduced the chlorophyll a content and a progressive decrease in algal growth and ultimately complete lysis of the cells was recorded with the increasing level of the herbicide. A concentration of 15 micrograms/ml has been found to be algicidal for both the test organism.</p>","PeriodicalId":84892,"journal":{"name":"Indian journal of environmental health","volume":"44 4","pages":"298-302"},"PeriodicalIF":0.0,"publicationDate":"2002-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"23270807","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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