THE ROLE OF AQUATIC PLANTS AND MICROORGANISMS IN DOMESTIC WASTEWATER TREATMENT

2014 ◽  
Vol 13 (8) ◽  
pp. 2031-2038 ◽  
Author(s):  
Nguyen Thi Loan ◽  
Nguyen Minh Phuong ◽  
Nguyen Thi Nguyet Anh
2020 ◽  
Vol 5 (2) ◽  
pp. 53-57
Author(s):  
Nandini Moondra ◽  
Namrata D Jariwala ◽  
Robin A Christian

Conventional domestic wastewater treatment in most developing countries is confined to secondary treatments, mainly focusing on solids and organics removal, which results in eutrophication when the effluents are discharged into receiving bodies. Thus, to resolve the issues associated with the conventional treatment system, in the present study, microalgae was introduced in the primary treated effluent collected from a sewage treatment plant to study the efficiency of the system in reducing eutrophication and other challenges of secondary treatment. Phycoremediation is an effective and eco-friendly treatment alternative that reduced the primary-treated effluent’s PO4-P, NH3-N and COD concentration to 97.89%, 98.81%, and 88.24%, respectively at the identical HRT practiced for secondary treatment. One-way ANOVA was also conducted to determine the effectiveness of the system statistically. The experimental and statistical analysis proved that microalgal treatment could resolve the challenges of conventional secondary treatments if adopted for domestic wastewater.


2014 ◽  
Vol 1073-1076 ◽  
pp. 1011-1014
Author(s):  
Fang Chen ◽  
Qiang Yao

Constructed wetland is a new wastewater treatment technology. It not only is more effective in wastewater treatment, but also has good eco-landscapes value. According to the characteristics of domestic wastewater discharge in rural, constructed wetlands is a key technology to solving this problem in China. Application of constructed wetland to Chinese rural domestic wastewater treatment was reviewed in this paper. On this basis, the issues in the application of constructed wetland encountered, and future trends are discussed. On the one hand, constructed wetlands were prone to clogging and low nitrogen removal efficiency. On the other hand, some existing constructed wetlands were abandoned due to poor maintenance and management. Therefore, in order to play better the role of wastewater treatment, anti-blocking ability and denitrification efficiency of constructed wetlands should be improved. Meanwhile, the maintenance and management of constructed wetlands should be strengthened. Application of constructed wetlands in the rural area provides a strong guarantee for sustainable development of rural economy.


2016 ◽  
Vol 37 (19) ◽  
pp. 2508-2515 ◽  
Author(s):  
Rakesh Kadaverugu ◽  
Rita P. Shingare ◽  
Karthik Raghunathan ◽  
Asha A. Juwarkar ◽  
Prashant R. Thawale ◽  
...  

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