Determining the Growth and Wastewater Treatment Ability of Para Grass (Brachiaria mutica) Vegetation in the Stabilization Ponds

2021 ◽  
pp. 83-90
Author(s):  
Van Thi Thanh Ho ◽  
Nam Dong Hoang ◽  
Minh Dang Pham
Keyword(s):  
Wastewater Treatment ◽  
Stabilization Ponds ◽  
Brachiaria Mutica

Study on Domestic Wastewater Treatment of the Horizontal Subsurface Flow Wetlands (HSSF-CWs) Using Brachiaria mutica

2020 ◽  
Vol 11 (10) ◽  
pp. 5627-5634 ◽  
Author(s):  
Van Thi Thanh Ho ◽  
Minh Pham Dang ◽  
Lam Tu Lien ◽  
Tai Thien Huynh ◽  
Tran Van Hung ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Subsurface Flow ◽  
Domestic Wastewater ◽  
Domestic Wastewater Treatment ◽  
Horizontal Subsurface Flow ◽  
Brachiaria Mutica

Wastewater treatment mechanisms in anoxic stabilization ponds

1996 ◽  
Vol 33 (7) ◽  
pp. 125-132 ◽  
Author(s):  
A. Almasi ◽  
M. B. Pescod
Keyword(s):  
Wastewater Treatment ◽  
Hydrogen Sulphide ◽  
Biological Activities ◽  
Euphotic Zone ◽  
Methanogenic Bacteria ◽  
Stabilization Ponds ◽  
Physico Chemical ◽  
Sulphur Bacteria ◽  
Green Sulphur ◽  
Treatment Mechanisms

Studies on the performance of wastewater stabilization ponds operating in the “grey” area of organic loading between fully anaerobic and facultative conditions show that organic matter removal is still satisfactory. The results obtained revealed that wastewater treatment mechanisms are mainly based on biochemical reactions in the anoxic system. Although physico-chemical mechanisms were not negligible, algal activities in the presence of light proved to be important in the surface layer of the pond and facultative bacteria were working mutually with the algae. Motile flagellate algae (Euglena and Chlamydomonas) were the only species found to exist under anoxic conditions. It was also determined that sulphate-reducing bacteria predominated in the lower volume of the anoxic ponds, rather than acidogenic bacteria, and this caused sulphide and hydrogen sulphide build-up in the pond's contents. The bottom volume of the ponds and the benthic sludge in laboratory-scale anoxic ponds contained acid producers and methanogenic bacteria causing the release of biogas. It is hypothesized that phototrophic bacteria (purple sulphur-, green sulphur- and purple non-sulphur bacteria) act as a biological filter to oxidize sulphide and hydrogen sulphide in the euphotic zone of the anoxic ponds. As a consequence of the latter biological activities, anoxic ponds are likely to prove viable alternatives to anaerobic and facultative ponds, where odour nuisance and high land requirements, respectively, are to be avoided.

Irrigation Reuse of Pond Effluents in Developing Countries

1987 ◽  
Vol 19 (12) ◽  
pp. 289-297 ◽  
Author(s):  
C. R. Bartone ◽  
S. Arlosoroff
Keyword(s):  
Developing Countries ◽  
Wastewater Treatment ◽  
World Bank ◽  
Large Scale ◽  
Risk Model ◽  
Wastewater Reuse ◽  
Epidemiological Data ◽  
Enteric Bacteria ◽  
Waste Stabilization Ponds ◽  
Stabilization Ponds

The large-scale reuse of sewage for irrigation, often without adequate safeguards, is commonplace in many arid and semiarid regions of the world. A UNDP/World Bank global research project has reviewed available epidemiological data and formulated a risk model to evaluate sanitary control options for effluent irrigation. The study concluded that wastewater treatment processes that effectively remove all or most of the pathogens in wastewater provide a major or total reduction in the negative health effects caused by raw wastewater reuse. Furthermore, the study found the recommended criteria for effective wastewater treatment for irrigation reuse in developing countries to be, in order of priority: (1) maximum removal of helminths; (2) effective reduction in bacterial and viral pathogens; and (3) freedom from odor and appearance nuisances (i.e., reduction of BOD). Multicell stabilization ponds are suited to meet all three criteria. Research sponsored by the UNDP/World Bank project has shown that well-designed and operated multicell stabilization ponds achieve virtually total removal of helminths and a greater than 99.99 percent reduction of enteric bacteria. Waste stabilization ponds can produce an odor-free effluent rich in nutrients and attractive for agricultural use. Most suitable in hot developing countries, ponds are a particularly robust, flexible, and almost fail-safe treatment system having low construction and operation costs. Research is now focusing on management and policy issues required to effectively achieve controlled irrigation reuse.

Technical and Economic Analysis of Stabilization Ponds

1991 ◽  
Vol 24 (5) ◽  
pp. 55-62
Author(s):  
Meisheng Nie ◽  
Shuimin Xu ◽  
Donald B. Aulenbach
Keyword(s):  
Wastewater Treatment ◽  
North China ◽  
Capital Cost ◽  
Cost Data ◽  
Land Area ◽  
Land Price ◽  
Stabilization Pond ◽  
The North ◽  
Stabilization Ponds ◽  
Land Cost

Compared with other methods of wastewater treatment, stabilization ponds provide the advantages of low capital cost, low operation and maintenance (O&M) costs and simple manipulations at the expense of a large land area. This study analysed the technical and economic aspects of stabilization ponds in order to determine their recommendation for use in specific location. Since few stabilization ponds in China were self-designed, and few integrated cost data were available, cost data were determined by a set of series designs. Stabilization ponds are contrasted with activated sludge (AS) system, since AS is a more frequently used method for municipal wastewater treatment. The cost data for AS system were obtained by surveying AS facilities built in China. The aspects used in this model analysis included (1) capital cost, (2) O&M costs, and (3) occupied land cost. For comparing the total costs of stabilization pond and AS, a new concept, critical land price (Pro), was introduced. Pro is the price of land at which the total cost of a stabilization pond is equal to that of an equivalent AS system. When land price is above the Pro, AS is more economic than a stabilization pond. When land price is below the Pro, a stabilization pond is more economic. In addition to comparing the total costs of AS and stabilization ponds, a comparison was made between stabilization pond in South China and in North China. The capital cost of a stabilization pond is 1/3 to 1/2 that of an equivalent AS plant, the O&M costs are 1/5 to 1/4 the AS costs, and the occupied land area is 15 to 40 times the AS land area. The Pro decreases with increasing wastewater flow. Using the model analysis, the critical land price in South China (Pros) is in the range of 10,000 to 30,000 RMB/Mo. (Mo. is an area unit used in China, it is equal to 1/15 hectares.) In North China, the critical land price (Pron) is 6,000 to 16,000 RMB/Mo. Comparing stabilization ponds in the south with those in the north showed that the capital cost, 0&M costs, and occupied land cost in the north are 1.5 to 1.8 times, 1.5 times, and 1.6 to 1.7 times those in the south, respectively.

scholarly journals Improving the performance of waste stabilization ponds in an arid climate

2021 ◽  
Author(s):  
Badre Achag ◽  
Hind Mouhanni ◽  
Abdelaziz Bendou
Keyword(s):  
Wastewater Treatment ◽  
Retention Time ◽  
Municipal Wastewater ◽  
Poor Performance ◽  
Treatment Method ◽  
Fecal Coliforms ◽  
Arid Climate ◽  
Waste Stabilization Ponds ◽  
Stabilization Ponds ◽  
Waste Stabilization

Abstract In many parts of the world, waste stabilization ponds (WSPs) are currently the preferred wastewater treatment method for municipal wastewater. The objective of this research is to examine the performance of a WSP in an arid climate region and to identify ways to improve its purification efficiency so that it can meet the criteria for reuse. The results attributed the poor performance to both improper process and physical design after 12 months of physicochemical and bacteriological analyses, as well as monitoring of operation, maintenance and loading rates. In tertiary treatment, maturation ponds are added, an increase in the capacity of the station, and management of the flow rate and retention time for each pond. By simulating the new WSP with GPS-X, the best pond area ratio obtained is 2.5 m2/capita, with a retention time of 4 days for anaerobic ponds, 20 days for facultative ponds and 3 days for two maturation ponds in series, which is suitable and provides reduction rates of BOD and fecal coliforms of 95 and 99%, respectively, with an average effluent concentration of 20 mg/L and 195 CFU. According to the results, well-maintained WSPs provide a viable, self-sufficient and environmentally friendly wastewater treatment solution for irrigation water supply in dry areas.

Wastewater Treatment in Stabilization Ponds with Higher Aquatic Plants

1987 ◽  
Vol 19 (12) ◽  
pp. 287-288
Author(s):  
V. I. Tsiprijan ◽  
V. V. Kravets
Keyword(s):  
Wastewater Treatment ◽  
Aquatic Plants ◽  
Waste Water Treatment ◽  
Simultaneous Increase ◽  
Industrial Waste Water ◽  
Higher Aquatic Plants ◽  
Stabilization Ponds ◽  
Surface Active ◽  
Active Substances ◽  
Vitamin Production

Higher aquatic plants (HAP) provide more effective tertiary wastewater treatment in biological ponds. They also accelerate the clean-up process with simultaneous increase of hydraulic loading. There was observed not only high removal efficiency for domestic organics, but also for various universal pollutants such as oil, synthetic surface active substances and phenols. Our findings have demonstrated that HAP stabilization ponds may be used successfully for industrial waste water treatment. We have also shown it expedient to apply the method in biological, biochemical and vitamin production plants and sugar refineries. HAP of reed, cane and rush proved to be the most effective plants to use.

Sign in / Sign up

Export Citation Format

Share Document