Microcosm Wetlands for Wastewater Treatment with Different Hydraulic Loading Rates and Macrophytes

2002 ◽  
Vol 31 (2) ◽  
pp. 690-696 ◽  
Author(s):  
Shuh-Ren Jing ◽  
Ying-Feng Lin ◽  
Tze-Wen Wang ◽  
Der-Yuan Lee
Keyword(s):  
Wastewater Treatment ◽  
Loading Rates ◽  
Hydraulic Loading

Microcosm Wetlands for Wastewater Treatment with Different Hydraulic Loading Rates and Macrophytes

2002 ◽  
Vol 31 (2) ◽  
pp. 690 ◽  
Author(s):  
Shuh-Ren Jing ◽  
Ying-Feng Lin ◽  
Tze-Wen Wang ◽  
Der-Yuan Lee
Keyword(s):  
Wastewater Treatment ◽  
Loading Rates ◽  
Hydraulic Loading

Pollutants Removal Performance of Subsurface Wastewater Infiltration System under Different Hydraulic Loading Rates

2014 ◽  
Vol 675-677 ◽  
pp. 934-938
Author(s):  
Si Yu Song ◽  
Jing Pan ◽  
Yang Zhang
Keyword(s):  
Wastewater Treatment ◽  
Field Scale ◽  
Operational Parameter ◽  
Loading Rates ◽  
Hydraulic Loading ◽  
Decentralized Wastewater Treatment ◽  
Effective Depth ◽  
Removal Efficiencies ◽  
Pollutants Removal

Field-scale experiments were conducted through a subsurface wastewater infiltration system (SWIS), with effective depth of 0.8 m, under hydraulic loading rates (HLR) of 0.044, 0.071, 0.098 and 0.12 m3/(m2 d). Taking the hydraulic and treatment efficiencies into consideration, HLR of 0.098 m3/(m2 d) was recommended. Under this condition, NH3-N, COD, TN and TP average removal efficiencies were 82.6%, 83.7%, 80.6 and 91.5%, respectively. This study will guide the control of operational parameter of a SWIS when it applies in decentralized wastewater treatment.

Evaluating performance of vertical flow constructed wetland under various hydraulic loading rates in effluent polishing

2011 ◽  
Vol 1 (2) ◽  
pp. 144-151 ◽  
Author(s):  
C. W. Maina ◽  
B. M. Mutua ◽  
S. O. Oduor
Keyword(s):  
Wastewater Treatment ◽  
Constructed Wetland ◽  
Ammonium Nitrogen ◽  
Water Bodies ◽  
Vertical Flow ◽  
Loading Rates ◽  
Hydraulic Loading ◽  
Untreated Wastewater ◽  
Treated Effluent ◽  
Vertical Flow Constructed Wetland

The discharge of untreated wastewater or partially treated effluent and runoff from agricultural fields into water bodies is a major source of surface water pollution worldwide. To mitigate this problem, wastewater treatment using wastewater stabilization ponds and constructed wetlands have been promoted. The performance of such wastewater treatment systems is strongly dependent on their hydraulics, which if not properly considered during design or operation, may result in the partially treated effluent being discharged into water bodies. This paper presents results from a study that was carried out to evaluate the performance of a vertical flow constructed wetland system under varying hydraulic loading regimes. The influent and effluent samples from the constructed wetland were collected and analysed for physical, chemical and biological parameters of importance to water quality based on recommended standard laboratory methods. The data collected was useful in determining the treatment efficiency of the wetland. The hydraulic loading rate applied ranged between 0.014 and 0.174 m/day. Phosphorus reduction for the different hydraulic loading rates ranged between 92 and 47% for lowest and highest loading rates applied respectively. However, ammonium nitrogen reduction was not significantly affected by the different hydraulic loading rates, since the reduction ranged between 97 and 94%.

scholarly journals Characteristics of wastewater treatment using a multi-soil-layering system in relation to wastewater contamination levels and hydraulic loading rates

2007 ◽  
Vol 53 (2) ◽  
pp. 215-223 ◽  
Author(s):  
Tsugiyuki Masunaga ◽  
Kuniaki Sato ◽  
Junichi Mori ◽  
Matsusige Shirahama ◽  
Hiromoto Kudo ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Loading Rates ◽  
Hydraulic Loading ◽  
Soil Layering ◽  
Contamination Levels

RESEARCH AND EVALUATE TREATMENT EFFICIENCY ON TAPIOCA PROCESSING INDUSTRIAL WASTEWATER BY AEROBIC BIOFILTER TECHNOLOGY WITH VARIOUS MATERIALS

2010 ◽  
Vol 13 (3) ◽  
pp. 54-66
Author(s):  
Phuong Thi Thanh Nguyen ◽  
Phuoc Van Nguyen ◽  
Anh Cam Thieu
Keyword(s):  
Wastewater Treatment ◽  
Industrial Wastewater ◽  
Utilization Rate ◽  
Organic Loading ◽  
Treatment Efficiency ◽  
Research Results ◽  
Loading Rates

This study was performed to evaluate the efficiency of tapioca processing wastewater treatment using aerobic biofilter with variety of biofilter media: coir, coal, PVC plastic and Bio - Ball BB15 plastic. Research results in the lab demonstrated all four aerobic biofilter models processed can treated completely N and COD which COD reached 90-98% and N reached 61-92%, respectively, at the organic loading rates in range of 0.5, 1, 1.5 and 2 kgCOD/m3.day. The results identified coir filter was the best in four researched materials with removal COD and specific substract utilization rate can reach 98%, and 0.6 kg COD/kgVSS.day. Research results open the new prospects for the application of the cheap materials, available for wastewater treatment.

Study on the performance of an up-flow aerated biofilter (UAB) in municipal wastewater treatments

1994 ◽  
Vol 30 (11) ◽  
pp. 25-33 ◽  
Author(s):  
Yoshimasa Watanabe ◽  
Satoshi Okabe ◽  
Tomochika Arata ◽  
Yuji Haruta
Keyword(s):  
Organic Matter ◽  
Suspended Solids ◽  
Municipal Wastewater ◽  
Unique Feature ◽  
Aeration Rate ◽  
Loading Rates ◽  
Hydraulic Loading ◽  
Running Cost ◽  
And Performance ◽  
Activated Sludge Systems

A comprehensive wastewater treatment system that accomplishes oxidation of organic matter, nitrification, and denitrification was developed, and its characteristics and performance were investigated. A municipal wastewater was treated by an up-flow aerated biofilter (UAB), in which biofilms were developed on stainless meshes installed horizontally. This UAB exhibited a great potential ability of oxidation of organic matter, SS stabilization, and nitrification due to a unique aeration mechanism giving high DO concentrations with relatively low aeration rates. Another unique feature of the UAB was that attached biofilms on stainless meshes physically filtered out and/or adsorbed suspended solids in the wastewater in addition to the biological oxidation of organic matter. A stable nitrification could be achieved at HRT=10 hours corresponding to a hydraulic loading of 86 L m−2 d−1 and at a ratio of aeration rate to wastewater flow rate (A/W) of 2, which is considerably low as compared to aeration rates of typical activated sludge systems. This UAB system also could handle relatively high hydraulic loading rates. The UAB used in this study still have enough space to install more stainless meshes so as to reduce hydraulic loading rates resulting in the reduction of HRT and aeration rate, which leads to improvement of the system performance as well as reduction of the running cost.

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