scholarly journals Intermittent aeration to improve wastewater treatment efficiency in pilot-scale constructed wetland

2016 ◽  
Vol 559 ◽  
pp. 212-217 ◽  
Author(s):  
Enrica Uggetti ◽  
Theodore Hughes-Riley ◽  
Robert H. Morris ◽  
Michael I. Newton ◽  
Christophe L. Trabi ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Constructed Wetland ◽  
Pilot Scale ◽  
Intermittent Aeration ◽  
Treatment Efficiency

Potential use of mangrove plantation as constructed wetland for municipal wastewater treatment

2003 ◽  
Vol 48 (5) ◽  
pp. 257-266 ◽  
Author(s):  
K. Boonsong ◽  
S. Piyatiratitivorakul ◽  
P. Patanaponpaiboon
Keyword(s):  
Wastewater Treatment ◽  
Constructed Wetland ◽  
Municipal Wastewater ◽  
Free Water ◽  
Avicennia Marina ◽  
Pilot Scale ◽  
Natural Forest ◽  
Municipal Wastewater Treatment ◽  
Detention Time ◽  
Bruguiera Cylindrica

The study evaluated the possibility of using mangrove plantation to treat municipal wastewater. Two types of pilot scale (100 × 150 m2) free water surface constructed wetland were set up. One system was a natural Avicennia marina dominated forest system. The other system was a newly planted system in which seedlings of Rhizophora spp., A. marina, Bruguiera cylindrica and Ceriops tagal were planted in 4 strips. Municipal wastewater was retained within the systems for 7 and 3 days, respectively. The results indicated that the average removal percentage of TSS, BOD, NO3-N, NH4-N, TN, PO4-P and TP in the newly planted system were 27.6-77.1, 43.9-53.9, 37.6-47.5, 81.1-85.9, 44.8-54.4, 24.7-76.8 and 22.6-65.3, respectively. Whereas the removal percentage of those parameters in the natural forest system were 17.1-65.9, 49.5-51.1, 44.0-60.9, 51.1-83.5, 43.4-50.4, 28.7-58.9 and 28.3-48.0, respectively. Generally, the removal percentages within the newly planted system and the natural forest system were not significantly different. However, when the removal percentages were compared with detention time, TSS, PO4-P and TP percentages removed were significantly higher in the 7-day detention time treatment. Even though the removal percentages were highly varied and temporally dependent, the overall results showed that mangrove plantation could be used as constructed wetland for municipal wastewater treatment in a similar way to the natural mangrove system.

Performance of a pilot‐scale, three‐stage constructed wetland system for domestic wastewater treatment

2009 ◽  
Vol 30 (11) ◽  
pp. 1187-1194 ◽  
Author(s):  
Bilal Tunçsiper ◽  
Selma Ayaz ◽  
Lütfi Akça ◽  
Kemal Gunes
Keyword(s):  
Wastewater Treatment ◽  
Constructed Wetland ◽  
Domestic Wastewater ◽  
Pilot Scale ◽  
Domestic Wastewater Treatment ◽  
Wetland System

scholarly journals Design of Portable Hybrid Constructed Wetland Reactor for the Treatment of Wastewater

2021 ◽  
Vol 9 (VI) ◽  
pp. 53-58
Author(s):  
Swapnil Hiwrale
Keyword(s):  
Wastewater Treatment ◽  
Constructed Wetland ◽  
Water Purification ◽  
Water Solution ◽  
Water Shortage ◽  
Pilot Scale ◽  
General Term ◽  
Pollutant Removal ◽  
Treated Wastewater ◽  
The Way

The idea of the project is predicated on the methodology of preventing the wastewater and the way to form the water pure by using various techniques to form water purification. Nowadays the matter of water shortage increases especially we face the water problem in summer seasons only. we are designing and portable hybrid water solution for the treatment of wastewater during this study, pilot-scale hybrid constructed wetlands (CWs) and multistage horizontal subsurface flow CWs (HF CWs) are studied and compared for the treatment of raw urban wastewater. Additionally, the sand became clogged, while the mulch failed to. The effect of water height on the average pollutant removal wasn't determined but HF10 performed better regarding compliance with legal regulations. With this idea of the project, we could see how we will purify the wastewater and the way much we can see the index of the water purification. A survey of the magnitude of water-related stress at villages on the subject of a college campus or Maharashtra villages affects rural life. Especially in the summer seasons. Problems of availability, accessibility, and quality of Water In Maharashtra 17 districts are that which is laid low with water crises. Maharashtra had approved over R.s 7000 corer to complete the potable project in the scarcity hit area. In India 4% of water resources available from 18% water available in word. Wetland technology can provide cheap and effective wastewater treatment in both temperature and tropical climates and is suitable for adoption in both industrialized likewise as in developing nations this method is utilized for the removal of a range of pollutants and a broad verity of wastewater worldwide. it's one of the simplest methods to treated wastewater at source premises, effectively and economically. This general term accustomed describe different degrees of treatment, so as of skyrocketing treatment levels are preliminary, primary, secondary, and tertiary or advance wastewater treatment. Disinfection to get rid of pathogens sometimes follows the last treatment steps. After treatment of wastewater from constructed wetland reactor, 90 to 95% BOD is going to be satisfied than 85 to 90% Turbidity is going to be removed, and 70 to 80% Nutrient are going to be removed by phytoremediation method. Constructed wetland technology has played a vital role in achieving the changes in wastewater.

Intermittent Aeration for Nitrogen Removal in Small Aerated Lagoon

1993 ◽  
Vol 28 (10) ◽  
pp. 335-341 ◽  
Author(s):  
S. Koottatep ◽  
C. Leesanga ◽  
H. Araki
Keyword(s):  
Wastewater Treatment ◽  
Total Nitrogen ◽  
Nitrogen Removal ◽  
Treatment Plant ◽  
Domestic Wastewater ◽  
Pilot Scale ◽  
Intermittent Aeration ◽  
Treatment Processes ◽  
Total Nitrogen Removal ◽  
Save Energy

Intermittent aeration has been proved to be an efficient method in nitrogen removal in many biological treatment processes. Aerated lagoon has been used as domestic wastewater treatment for a small housing estates in Thailand for quite sometime. The purpose of this study is to determine whether intermittent aeration of aerated lagoon could provide efficient nitrogen removal in domestic wastewater. The experiment was carried out using pilot scale aerated lagoon at Chiangmai University. The result showed that 45% of total nitrogen removal could be achieved by aeration and non-aeration of 12 hours each cycle. The intermittent aeration did not affect organic substances removal of the process. Sludge recycle during non-aeration period may improve total nitrogen removal. The method could be introduced to save energy of small wastewater treatment plant.

Lolium Perenne as the Cultivation Plant in Hydroponic Ditch and Constructed Wetland to Improve Wastewater Treatment Efficiency in a Cold Region

Wetlands ◽  
2016 ◽  
Vol 36 (4) ◽  
pp. 659-665 ◽  
Author(s):  
Yongxiang Ren ◽  
Yang Liu ◽  
Junfeng Sun ◽  
Hao Lu ◽  
Lei Yang ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Lolium Perenne ◽  
Constructed Wetland ◽  
Treatment Efficiency ◽  
Cold Region

Wastewater treatment performance efficiency of constructed wetlands in African countries: a review

2014 ◽  
Vol 71 (1) ◽  
pp. 1-8 ◽  
Author(s):  
Andualem Mekonnen ◽  
Seyoum Leta ◽  
Karoli Nicholas Njau
Keyword(s):  
Wastewater Treatment ◽  
Constructed Wetland ◽  
Oxygen Demand ◽  
Surface Flow ◽  
Operational Parameters ◽  
Treatment Efficiency ◽  
African Countries ◽  
Wetland Type ◽  
Treatment Performance ◽  
Nutrient Removal Efficiency

In Africa, different studies have been conducted at different scales to evaluate wastewater treatment efficiency of constructed wetland. This paper aims to review the treatment performance efficiency of constructed wetland used in African countries. In the reviewed papers, the operational parameters, size and type of wetland used and the treatment efficiency are assessed. The results are organized and presented in six tables based on the type of wetland and wastewater used in the study. The results of the review papers indicated that most of the studies were conducted in Tanzania, Egypt and Kenya. In Kenya and Tanzania, different full-scale wetlands are widely used in treating wastewater. Among wetland type, horizontal subsurface flow wetlands were widely studied followed by surface flow and hybrid wetlands. Most of the reported hybrid wetlands were in Kenya. The results of the review papers indicated that wetlands are efficient in removing organic matter (biochemical oxygen demand and chemical oxygen demand) and suspended solids. On the other hand, nutrient removal efficiency appeared to be low.

Sign in / Sign up

Export Citation Format

Share Document