scispace - formally typeset
Search or ask a question
Topic

Wastewater

About: Wastewater is a research topic. Over the lifetime, 92512 publications have been published within this topic receiving 1256590 citations. The topic is also known as: waste water.


Papers
More filters
Journal ArticleDOI
TL;DR: The MFC stack system in this study was demonstrated to be able to treat real wastewater with the added benefit of harvesting electricity energy.

255 citations

Journal ArticleDOI
TL;DR: China is facing severe water problems including scarcity and pollution which are now becoming key factors restricting developments and its experience can benefit the development of water reuse in other regions.
Abstract: China is facing severe water problems including scarcity and pollution which are now becoming key factors restricting developments. Creating an alternative water resource and reducing effluent discharges, water reuse has been recognized as an integral part of water and wastewater management scheme in China. The government has launched nationwide efforts to optimize the benefits of utilizing reclaimed water. This article reviewed the water reuse activities in China, including: (1) application history and current status; (2) potentials of reclaimed water reuse; (3) laws, policies and regulations governing reclaimed water reuse; (4) risks associated with reclaimed water reuse; (5) issues in reclaimed water reuse. Reclaimed water in Beijing and Tianjin were given as examples. Suggestions for improving the efficiencies of reusing urban wastewater were advanced. Being the largest user of reclaimed wastewater in the world, China's experience can benefit the development of water reuse in other regions.

255 citations

Journal ArticleDOI
TL;DR: In this paper, the authors describe the different methods used by the dairy industry to treat wastes, highlighting their effects on quality and efficiency removal of the pollution, focusing on biotechnological alternatives to utilize the dairy wastes.
Abstract: Background Demand of dairy products is increasing in different countries, which results in the development of the dairy industry and increases in the generation of wastes. The main wastes generated are whey, dairy sludges and wastewater (processing, cleaning and sanitary). They have high nutrient concentration, biological oxygen demand (BOD), chemical oxygen demand (COD) and organic and inorganic contents. Furthermore, they can contain different sterilizing agents and a wide range of acid and alkaline detergents. Pollution due to dairy industry affects the air, soil and water quality. Scope and approach This review aims to describe the different methods used by the dairy industry to treat wastes, highlighting their effects on quality and efficiency removal of the pollution. Especially, it focusses on biotechnological alternatives to utilize the dairy wastes. Key findings and conclusions Physico-chemical, biological, and biotechnological methods can be used for treatment of dairy wastewaters. The physico-chemical treatment is used for reduction of milk fat and protein colloids, but it has the disadvantages of the high cost of the reagents and limited removal of COD. Biological treatments are used to remove organic material from dairy waste, however, the formation of sludge during aerobic biodegradation is a disadvantage. Aerobic and anaerobic process treatments can be used together in order to reach the effluents discharge limits for dairy wastewater. Biotechnological processes are the most recent alternatives, and can result in important products to the industries, such as whey-derived products, bioplastics, biofuels, bioenergy, organic acids, bioactive peptides, enzymes, among others.

255 citations

Journal ArticleDOI
Wen-Xin Gong1, Shu-Guang Wang1, Xue-Fei Sun1, Xian-Wei Liu1, Qinyan Yue1, Baoyu Gao1 
TL;DR: The bioflocculant was found to be effective for flocculation of a kaolin suspension over weakly acidic pH (5-7); divalent cations enhanced the flocculating activity, while the co-presence of Al3+ and Fe3+ resulted the negative effect.

255 citations


Network Information
Related Topics (5)
Sorption
45.8K papers, 1.3M citations
85% related
Environmental pollution
100.4K papers, 1.1M citations
84% related
Organic matter
45.5K papers, 1.6M citations
84% related
Groundwater
59.3K papers, 1M citations
84% related
Biomass
57.2K papers, 1.4M citations
83% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20247
20236,349
202213,022
20214,371
20204,662
20196,129