Attached-Growth Waste Stabilization Pond Treatment Evaluation

1987 ◽  
Vol 19 (12) ◽  
pp. 229-235 ◽  
Author(s):  
H. K. Shin ◽  
Chongrak Polprasert
Keyword(s):  
Fecal Coliform ◽  
Suspended Solids ◽  
Pond Water ◽  
Pilot Scale ◽  
Growth Media ◽  
Waste Stabilization Ponds ◽  
Attached Growth ◽  
Stabilization Ponds ◽  
Control Units ◽  
Waste Stabilization

This study investigated the feasibi1ity of improving waste stabilization ponds (WSP) performance through the addition of attached-growth media in the pond water. An artificial media consisting of fine strings of polyvinylidene chloride was employed as an attached-growth media in the laboratory-scale and pilot-scale experiments. Better removal of organic, nutrient and suspended solids were obtained in the attached-growth waste stabilization ponds (AGWSP). The AGWSP were found to be rather stable against increased hydraulic loadings. However, the fecal coliform die-off in the AGWSP units were not significantly different from those of the control units without attached-growth media.

Upgrading of facultative ponds to treat a toxic organic wastewater

1995 ◽  
Vol 31 (12) ◽  
pp. 201-210 ◽  
Author(s):  
C. Polprasert ◽  
S. Sookhanich
Keyword(s):  
High Strength ◽  
Pond Water ◽  
Superior Performance ◽  
Growth Media ◽  
Phenol Removal ◽  
Waste Stabilization Ponds ◽  
Attached Growth ◽  
Waste Stabilization ◽  
Removal Efficiencies ◽  
And Performance

This study investigated the efficiency and performance of attached-growth waste stabilization ponds (AGWSP) treating a high-strength phenolic wastewater. The experiments employed 4 laboratory-scale pond units installed with an artificial attached-growth media. A control pond unit without attached-growth media (or WSP) was run in parallel for data comparison. The experimental results revealed that the AGWSP units could remove about 99, 50, 45 and 28% of phenol when operated at influent phenol concentrations of 500, 1000, 1500 and 2000 mg/l (corresponding to organic loading rates (OLR) of 180, 360, 540 and 720 kg COD/(ha.day), respectively); these removal efficiencies were consistently higher than those observed in the WSP unit. The influent phenol concentrations of 1000-2000 mg/l resulted in some toxic effects and over loading to the pond system, causing the phenol removal efficiencies to decrease. The amount of phenol loss from the pond water through volatilization was found to be approximately 10%. A relationship between phenol removal rates (excluding volatilization) and phenol dosages to the AGWSP was developed. The superior performance of the AGWSP over the WSP appeared to be due to the biofilm biomass growing on the attached-growth media surface, resulting in increased potential biomass in the pond water.

Nitrogen removal in attached growth waste stabilization ponds of wastewater from a rubber factory

1999 ◽  
Vol 40 (1) ◽  
pp. 45-52
Author(s):  
A. Rakkoed ◽  
S. Danteravanich ◽  
U. Puetpaiboon
Keyword(s):  
Nitrogen Removal ◽  
Waste Treatment ◽  
Pond Water ◽  
Anaerobic Treatment ◽  
Waste Stabilization Ponds ◽  
Attached Growth ◽  
Stabilization Ponds ◽  
Waste Stabilization ◽  
Removal Efficiencies ◽  
Laboratory Waste

Nitrogen removal from wastewater from rubber factories using attached-growth waste stabilization ponds (AGWSP) was evaluated. Usually, wastewaters generated from rubber factories such as concentrated latex factories and rubber sheet factories contain a high amount of nitrogen originating from natural rubber and ammonia compounds added in the production processes. From an investigation of 3 rubber factories at Songkhla, Thailand, average concentrations of TKN, NH3-N and Org-N in raw factory wastewater were found to be 889, 578 and 311 mg/l respectively. Two series of laboratory waste treatment ponds, waste stabilization ponds (WSP) and attached-growth waste stabilization ponds were investigated to compare the efficiency of nitrogen removal from wastewater from a concentrated latex factory. The wastewater fed to the experimental units was collected from the effluent of the anaerobic treatment pond at the factory. The experiments were conducted with hydraulic retention times (HRT) of 40 and 20 days. Another experiment run with an HRT of 40 days together with 50% recirculating of effluent was also conducted. Finally, an experiment run at an HRT of 4 days was carried out in order to observe the effect of shock loading. The results revealed that TKN, NH3-N and BOD5 removal efficiencies in AGWSP were higher than in control ponds (WSP). Increased removal efficiencies were achieved which resulted from an increase in biomass on media in the pond water.

scholarly journals Suspended solids settling and half removal time in stabilization ponds (Tunisia)

2011 ◽  
Vol 24 (1) ◽  
pp. 53-61
Author(s):  
Kôkôh Rose Effebi ◽  
Chema Keffala ◽  
Jean Luc Vasel
Keyword(s):  
Suspended Solids ◽  
Treatment Plant ◽  
Treatment Center ◽  
Waste Stabilization Ponds ◽  
Removal Time ◽  
Stabilization Ponds ◽  
Waste Stabilization ◽  
Making A Difference ◽  
Sampling Systems ◽  
Settling Process

Settling is one of the processes occurring in waste stabilization ponds (WSP). Part of suspended solids (SS) is removed by sedimentation but very often the efficiency of WSP is presented without making a difference between settling and biological processes. In this way the WSP is seen as a black box process. This work presents an experimental approach to the study of the removal of wastewater suspended solids in a test column in order to improve our knowledge of the settling process in ponds. These results show that the settling test in columns can be used to estimate the half removal time (t50) for the study of settling characteristics of suspended solids in wastewater stabilization ponds. The aim of this study was to determine the half removal time (t50) in anaerobic, facultative and maturation ponds, and in the influent to these ponds, at the experimental wastewater treatment plant of CERTE (Recycling and Treatment Center of Wastewater in Tunisia), by a column settling test. The experiments lasted between 15 and 120 min. The column was 2 m high with sampling systems at various depths: 40, 80, 120, 160 and 200 cm. Half-removal suspended solids time t50 was defined as the time at which 50% of SS was removed. Models derived from the scientific literature were used to interpret the experimental data. The experimental results demonstrated that higher suspended solids concentrations in the influent led to shorter t50 values and better settling.

scholarly journals Efficiency of Horizontal Roughing Filter in Removing Suspended Solids from Effluent of Waste Stabilization Ponds in 2013

2017 ◽  
Vol 6 (4) ◽  
pp. 320-325
Author(s):  
Seyed Mostafa Khezri ◽  
Hossein Jafari Mansoorian ◽  
Gharib Majidi ◽  
Farideh Atabi ◽  
Taha Tohidi Moghaddam ◽  
...  
Keyword(s):  
Suspended Solids ◽  
Waste Stabilization Ponds ◽  
Stabilization Ponds ◽  
Waste Stabilization

Design of water hyacinth ponds for removing algal particles from waste stabilization ponds

2004 ◽  
Vol 48 (11-12) ◽  
pp. 115-123 ◽  
Author(s):  
Y. Kim ◽  
D.L. Giokas ◽  
P.-G. Chung ◽  
D.-R. Lee
Keyword(s):  
Dissolved Oxygen ◽  
Water Hyacinth ◽  
Suspended Solids ◽  
Ph Dependence ◽  
Waste Stabilization Ponds ◽  
State Reduction ◽  
Detention Time ◽  
Stabilization Ponds ◽  
Waste Stabilization ◽  
Separation Model

In this study it was demonstrated that when water hyacinth ponds (WHPs) are used for polishing the effluent from waste stabilization ponds (WSPs), suspended solids (mostly algal particles) are efficiently separated, which also resulted in the reduction of insoluble forms of COD and nutrients. The high pH of the WSPs effluent was easily adjusted to 6-7 as it passed through the WHPs. However, the use of water hyacinth rapidly reduced dissolved oxygen at the first cell to less than three mg/L or very frequently to a level of anaerobic state. Reduction of suspended solids at the WHPs mainly depends on the detention time and pH. An empirical separation model incorporating the detention time and pH dependence was developed.

Nitrogen removal in baffled waste stabilization ponds

1996 ◽  
Vol 33 (7) ◽  
pp. 173-181 ◽  
Author(s):  
S. Muttamara ◽  
U. Puetpaiboon
Keyword(s):  
Removal Efficiency ◽  
Nitrogen Removal ◽  
Plug Flow ◽  
Specific Area ◽  
Pilot Scale ◽  
Bacterial Biofilm ◽  
Waste Stabilization Ponds ◽  
Stabilization Ponds ◽  
N Removal ◽  
Waste Stabilization

This study evaluated nitrogen removal in Baffled Waste Stabilization Ponds (BWSPs) comprising laboratory and pilot-scale ponds with different number of baffles. The aim was to promote the waste stabilization pond practice for wastewater treatment in tropical countries by increasing nitrogen and organic carbon removal efficiency or reducing the land area requirement through the use of baffles which increased the biofilm biomass concentrations. The experiments started with a tracer study to find out the hydraulic characteristics of each pond. It was shown that the dispersion number decreased with increasing flow length and number of baffles which indicated more plug flow conditions. The deviation of actual HRT from theoretical HRT was computed and the flow pattern suggested the existence of an optimum spacing of baffles in BWSP units. The investigations further revealed that more than 65% TN and 90% NH3-N removal efficiencies were achieved at HRT of 5 days in a 6 baffled pond, which corresponds to the specific area of 34.88 m2m3. TN and NH3-N removal increased with increasing number of baffles in the BWSP units. Combined algal/bacterial biofilm grown on the baffles immersed in the ponds showed potential for increasing the extent of nitrification. COD removal increased with higher number of baffles with its maximum removal efficiency at 6 baffles. Compared with normal WSP, BWSP gave higher TN, NH3-N, COD and BOD5 removal efficiency. The effluent SS concentrations from the laboratory-scale 6 baffled pond were less than 20 mg/L at HRT of 3 days or more.

scholarly journals Enhancement of waste stabilization ponds efficacy using local fixed film materials

2007 ◽  
pp. 419-428
Author(s):  
R.M. Al-Sa 'ed ◽  
N. Mahmoud ◽  
A. Abu-Madi ◽  
O.R. Zimmo
Keyword(s):  
Organic Matter ◽  
Rural Areas ◽  
Low Cost ◽  
Domestic Wastewater ◽  
Pilot Scale ◽  
Fecal Coliforms ◽  
Waste Stabilization Ponds ◽  
Stabilization Ponds ◽  
Waste Stabilization ◽  
In Series

This paper evaluates the feasibility of using local rock filter as natural media in waste stabilization ponds, A pilot-scale algae-rock filter ponds (ARPs) system was investigated, in parallel with algae-based ponds (ABPs) over a period of 6 months to evaluate the treatment efficacy of both systems. Each system entailed 4 equal ponds in series and was continuously fed with domestic wastewater from Birzeit University. The removal rates of organic matter, nutrients and faecal coliforms were monitored within each treatment system. The results obtained revealed that ARPs system was more efficient in the removal of organic matter (TSS and COD; 86% and 84%, respectively) and fecal coliforms (4 log10) than ABPs (81%, 81%, 3 log10, respectively). Nitrogen was reduced in the ARPs to an average of24 mg N/1; in contrast the ABPs effluent contained 32 mg N/1. Compared to ABP system, passive aerated ARPs option is an efficient, a low-cost and land-saving alternative with effluent quality suitable for restricted agricultural use in rural areas.

Sign in / Sign up

Export Citation Format

Share Document