|
| Analysis of capability of different waste water treatmentsystems in purifying sewage in large-scaled pig farms |
| |
| DOI： |
|
| Hits: 1704 |
| Download times: 580 |
| Abstract: |
| The integrated planting and breeding model is widely accepted in south China. 12 large-scaled pig farms
were selected and were divided into four groups according to their sewage treatment systems，the first one was defined
as pannage-methane tank-planting pattern；the second one was pannage-methane tank-fishing pattern；the third one
was pannage-methane tank-planting-fishing pattern and the fourth one was pannage-methane tank-fishing combined
with concentrated methane supply pattern. The first sewage facility was anaerobic fermentation system and the second
facility was fishpond and some other ecological engineering. The pollutant concentration in different treatment models
showed that anaerobic fermentation system showed good effect on reducing fecal coliforms and in some extent，also on
reducing total soluble suspends. However，the naerobic fermentation system displayed a limited purification of nitrogen
and phosphorus. Fishpond and some other ecological
engineering made a good performance in reducing several
pollutants in sewage. A comprehensive evaluation on the
capability of waste water treatment system in purifying
sewage was carried out，the results showed that the third
pattern was the best，followed by the fourth pattern，then
the second pattern，the last one was the first pattern. |
|
View Full Text
View/Add Comment Download reader |
