Promising Techniques for Wastewater Treatment and Water Quality Assessment最新文献

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Treatment of Wastewater by Nanofiltration 纳滤法处理废水

Promising Techniques for Wastewater Treatment and Water Quality Assessment Pub Date : 2021-12-01 DOI: 10.5772/intechopen.94329

M. Amine Didi

{"title":"Treatment of Wastewater by Nanofiltration","authors":"M. Amine Didi","doi":"10.5772/intechopen.94329","DOIUrl":"https://doi.org/10.5772/intechopen.94329","url":null,"abstract":"In recent years, some countries have implemented regulations governing aqueous discharges. With a view to sustainable development, manufacturers are looking for wastewater treatment technologies to control their discharges. Nanofiltration seems particularly suitable for the separation characteristics that it allows with regard to the size of the target molecules. Pollution by rare earths and heavy metals affects groundwater and surface water. This changed the quality of the water and made it unsafe to use. Water pollution is a big problem, given the diversity of sources and characteristics of polluting species, the main ones being industrial, urban and agricultural discharges, generated by human activity. The great difficulty being that heavy metals are not biodegradable and tend to accumulate in living organisms (fish, mollusks, vegetables, etc.) consumed by humans. For these concerns, environmental laws have become more severe. For this, the treatment of aqueous effluents has become important. It can be concluded that separation and purification chemistry is an area of topical research. The discharges coming from the industry contain heavy metals (chromium, copper, zinc, nickel, iron, cobalt, cadmium, lead, …) which are harmful for the human health, the fauna and flora. It is necessary to be well controlled. This chapter presents a study of nanofiltration for industrial wastewater treatment.","PeriodicalId":425430,"journal":{"name":"Promising Techniques for Wastewater Treatment and Water Quality Assessment","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115035758","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

Evaluation and Quantification of Anionic Surfactant in the Gomti River at Lucknow City, India 印度勒克瑙市Gomti河阴离子表面活性剂的评价与定量

Promising Techniques for Wastewater Treatment and Water Quality Assessment Pub Date : 2021-12-01 DOI: 10.5772/intechopen.93517

Vinay Kumar, Pokhraj Sahu, Pramod K. Singh, Nishi K. Shukla, D. P. Mishra, Markandeya

引用次数: 0

Tertiary Treatment for Safely Treated Wastewater Reuse 三级处理技术在废水回用中的应用

Promising Techniques for Wastewater Treatment and Water Quality Assessment Pub Date : 2021-12-01 DOI: 10.5772/intechopen.94872

N. Belaid

{"title":"Tertiary Treatment for Safely Treated Wastewater Reuse","authors":"N. Belaid","doi":"10.5772/intechopen.94872","DOIUrl":"https://doi.org/10.5772/intechopen.94872","url":null,"abstract":"The tertiary treatment of resulting water from a conventional biological treatment process is envisaged in the aim to obtain a high quality of water that can be reused for different purposes. This treatment is based on the integration of the membrane-based technologies in the total process of wastewater treatment. The experimental studies are carried out on a small pilot, equipped with different mineral membranes of micro and ultrafiltration. These membranes are used for the different tested processes (MF, MF-UF and cogulation-MF). The results obtained make it possible to attend a complete elimination of the total flora and an additional reduction of the other parameters such as turbidity, suspended matter, COD and BOD. Tests on a large scale are then carried out on a semi-industrial pilot, equipped with the same type of membranes. The optimization of the operating conditions made allow the obtaining under the conditions of transmembrane pressure 0.85 bar, a cross flow velocity of 2.25m/s and with ambient temperature a filtrate flux of about 200 L/hm 2. The coupling of a stage of coagulation in the membrane process allows the reduction of the effect of the membrane fouling and an improvement of 36% of the filtrate flux.","PeriodicalId":425430,"journal":{"name":"Promising Techniques for Wastewater Treatment and Water Quality Assessment","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123263413","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