Sustainable treatment and reuse of diluted pig manure streams in Russia: from laboratory trials to full-scale implementation |
| |
Authors: | Kalyuzhnyi Sergey Sklyar Vladimir Epov Andrey Arkhipchenko Irina Barboulina Irina Orlova Olga Kovalev Alexander Nozhevnikova Alla Klapwijk Abraham |
| |
Institution: | (1) Department of Chemical Enzymology, Chemistry Faculty, Moscow State University, 119899 Moscow, Russia;(2) Institute of Agricultural Microbiology, Podbelsky shosse 3, 189620 St. Petersburg-Pushkin 8, Russia;(3) Russian Institute of Agriculture Electrification, 109456 Moscow, Russia;(4) Institute of Microbiology, Russian Academy of Sciences, 117811 Moscow, Russia;(5) Subdepartment of Environmental Technology, Wageningen University, 6700 EV Wageningen, The Netherlands |
| |
Abstract: | This article summarizes the results obtained during the laboratory and pilot development of integrated biologic and physicochemical
treatment and reuse of diluted pig manure streams. The application of a straw filter was an effective means to separate the
solid and liquid fractions of raw wastewater and resulted in the removal of a significant part of the dry matter, total nitrogen,
and phosphorus (65, 27, and 32%, respectively). From the filtrate generated, 60–80% of the total chemical oxygen demand (COD)
was removed in an upflow anaerobic sludge bed reactor operating at 15–30°C. Ammonia was efficiently eliminated (>99%) from
the anaerobic effluents using Ural laumantite as an ion exchanger. However, the nitrogen-content of the zeolite was too low
to consider this method of ammonia removal economically feasible. The phosphate precipitation block, consisting of stripper
of CO2 and fluidized-bed crystallizator, was able to decrease the concentration of soluble phosphate in the anaerobic effluents
up to 7–15 mg of phosphate/L. The application of aerobic/anoxic biofilter as a sole polishing step was acceptable from an
aesthetic point of view (the effluents were transparent and almost colorless and odorless) and elimination of biochemical
oxygen demand (the resting COD was hardly biodegradable). However, the effluent nutrient concentrations (especially nitrogen)
were far from the current standards for direct discharge of treated wastewater. We discuss the approaches for further improvement
of effluent quality. Finally, we provide an outline of a full-scale system that partially implements the laboratory- and pilot-scale
results obtained. |
| |
Keywords: | Integrated system nutrient removal phosphate precipitation pig manure wastewater straw filter upflow anaerobic sludge bed reactor zeolite |
本文献已被 PubMed SpringerLink 等数据库收录! |
|