+ Site Statistics
References:
54,258,434
Abstracts:
29,560,870
PMIDs:
28,072,757
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Integrated treatment of shrimp effluent by sedimentation, oyster filtration and macroalgal absorption: a laboratory scale study



Integrated treatment of shrimp effluent by sedimentation, oyster filtration and macroalgal absorption: a laboratory scale study



Aquaculture 193(1/2): 155-178



Effluent water from shrimp ponds typically contains elevated concentrations of dissolved nutrients and suspended particulates compared to influent water. Attempts to improve effluent water quality using filter feeding bivalves and macroalgae to reduce nutrients have previously been hampered by the high concentration of clay particles typically found in untreated pond effluent. These particles inhibit feeding in bivalves and reduce photosynthesis in macroalgae by increasing effluent turbidity. In a small-scale laboratory study, the effectiveness of a three-stage effluent treatment system was investigated. In the first stage, reduction in particle concentration occurred through natural sedimentation. In the second stage, filtration by the Sydney rock oyster, Saccostrea commercialis (Iredale and Roughley), further reduced the concentration of suspended particulates, including inorganic particles, phytoplankton, bacteria, and their associated nutrients. In the final stage, the macroalga, Gracilaria edulis (Gmelin) Silva, absorbed dissolved nutrients. Pond effluent was collected from a commercial shrimp farm, taken to an indoor culture facility and was left to settle for 24 h. Subsamples of water were then transferred into laboratory tanks stocked with oysters and maintained for 24 h, and then transferred to tanks containing macroalgae for another 24 h. Total suspended solid (TSS), chlorophyll a, total nitrogen (N), total phosphorus (P), NH4(+), NO3(-), and PO4(3-), and bacterial numbers were compared before and after each treatment at: 0 h (initial); 24 h (after sedimentation); 48 h (after oyster filtration); 72 h (after macroalgal absorption). The combined effect of the sequential treatments resulted in significant reductions in the concentrations of all parameters measured. High rates of nutrient regeneration were observed in the control tanks, which did not contain oysters or macroalgae. Conversely, significant reductions in nutrients and suspended particulates after sedimentation and biological treatment were observed. Overall, improvements in water quality (final percentage of the initial concentration) were as follows: TSS (12%); total N (28%); total P (14%); NH4(+) (76%); NO3(-) (30%); PO4(3-) (35%); bacteria (30%); and chlorophyll a (0.7%). Despite the probability of considerable differences in sedimentation, filtration and nutrient uptake rates when scaled to farm size, these results demonstrate that integrated treatment has the potential to significantly improve water quality of shrimp farm effluent.

Please choose payment method:






(PDF emailed within 0-6 h: $19.90)

Accession: 003480449

Download citation: RISBibTeXText

DOI: 10.1016/s0044-8486(00)00486-5


Related references

Treatment of shrimp effluent by sedimentation and oyster filtration using Crassostrea gigas and C. rhizophorae. Brazilian Archives of Biology and Technology 52(3): 775-783, 2009

Sydney rock oyster, Saccostrea commercialis (Iredale and Roughley), filtration of shrimp farm effluent: The effects on water quality. Aquaculture Research 30(1): 51-57, 1999

Recycling of tannery effluent from common effluent treatment plant using ceramic membrane based filtration process: A closed loop approach using pilot scale study. Environmental Progress & Sustainable Energy 35(1): 60-69, 2016

Macroalgal bioindicators (growth, tissue N, delta(15)N) detect nutrient enrichment from shrimp farm effluent entering Opunohu Bay, Moorea, French Polynesia. Marine Pollution Bulletin 56(2): 245-249, 2007

Tertiary treatment of sewage effluent via pilot scale slow sand filtration. Environmental Technology 15(1): 15-28, 1994

Model calibration of deep-bed filtration based on pilot-scale treatment of secondary effluent. Water Science & Technology 36(4): 231-237, 1997

Paper and board mill effluent treatment with the combined biological-coagulation-filtration pilot scale reactor. Bioresource Technology 99(15): 7383-7387, 2008

Treating shrimp farming effluent using the native oyster, Crassostrea rhizophorae, in Brazil. World Aquaculture 36(3): 60-63, 2005

The use of laboratory and pilot-scale plant in effluent treatment. Proc Soc Water Treatment And Examination 10(1): 26-38, 1961

A sand granular carbon filtration treatment system for removing aqueous pesticide residues from a marine toxicology laboratory effluent. Water Research 19(12): 1601-1604, 1985

Influence of bleaching conditions and membrane filtration on pilot scale biological treatment of kraft mill bleach plant effluent. Water Science & Technology 29(5-6): 163-176, 1994

Laboratory study of biological filtration in purification of effluent from market milk dairies. II. Retention time of effluent on biofilter as purification factor. Tehnika. Beogr., 24: 5, 890-895, 1969

Evaluation of a laboratory-scale biological process for the treatment of edible oil effluent. Water S A 26(4): 555-558, 2000

Septic tank effluent treatment using laboratory-scale peat filters. Water Pollution Research Journal of Canada 29(1): 19-37, 1994

Design of an integrated oyster shrimp production system. Journal of the World Aquaculture Society 22(3): 63A, 1991