SU170418A1 - METHOD OF SEWAGE CLEANING - Google Patents
METHOD OF SEWAGE CLEANINGInfo
- Publication number
- SU170418A1 SU170418A1 SU832557A SU832557A SU170418A1 SU 170418 A1 SU170418 A1 SU 170418A1 SU 832557 A SU832557 A SU 832557A SU 832557 A SU832557 A SU 832557A SU 170418 A1 SU170418 A1 SU 170418A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- activated sludge
- sewage cleaning
- sludge
- tanks
- aerotanks
- Prior art date
Links
- 239000010865 sewage Substances 0.000 title description 2
- 238000004140 cleaning Methods 0.000 title 1
- 239000010802 sludge Substances 0.000 description 13
- 238000005273 aeration Methods 0.000 description 3
- 238000005056 compaction Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 239000003337 fertilizer Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
Известен способ очистки сточных вод с активным илом в аэротенках. После аэротенков очищенна сточна вода вместе с активным илом поступает во вторичные отстойники дл разделени . Часть активного ила (30-70%) возвращают в аэротенки дл повторного использовани , а избыточный активный ил уплотн ют в течение 12-15 час в илоуплотнител х и затем направл ют на сбраживание в метантенках. Обработанный таким образом ил подают на иловые площадки, где подсушивают до влажности 82-88о/о.A known method of sewage treatment with activated sludge in aeration tanks. After the aeration tanks, the treated wastewater along with the activated sludge enters the secondary clarifiers for separation. A portion of the activated sludge (30-70%) is returned to the aerotanks for reuse, and the excess activated sludge is compacted for 12-15 hours in the sieve packers and then sent for digestion in the digesters. The sludge treated in this way is fed to sludge beds, where it is dried to a humidity of 82-88о / о.
С целью устранени громоздких в аппаратурном оформлении и трудоемких операций илоуплотнени , сбраживани и подсушивани , предлагаетс весь активный ил из вторичныхFor the purpose of eliminating bulky compaction and labor-intensive operations of sludge compaction, fermentation and drying, all active sludge from secondary
отстойников направл ть на центрифугирование , фугат с содержанием активного ила 8-10 г/л возвращать в аэротенки дл повторного использовани , а осадок влажностью 82-88% без дальнейшей обработки использовать как удобрение.The sedimentation tanks should be sent for centrifugation, the centrate with an activated sludge content of 8–10 g / l should be returned to aeration tanks for reuse, and the precipitate with a humidity of 82–88% without further processing should be used as fertilizer.
Предмет изобретени Subject invention
Способ очистки сточных вод с активным илом в аэротенках и вторичных отстойниках, из которых очищенна вода направл етс на сброс, отличающийс тем, что, с целью интенсификации и упрощени процесса, активный ил после вторичных отстойников центрифугируют , фугат, содержащий активный ил, направл ют в аэротенки дл повторного использовани .The method of purification of wastewater with activated sludge in aerotanks and secondary settling tanks, from which purified water is directed to a discharge, characterized in that, in order to intensify and simplify the process, activated sludge after secondary settling tanks is centrifuged, the activated sludge containing activated sludge is directed to aerotanks for reuse.
Publications (1)
Publication Number | Publication Date |
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SU170418A1 true SU170418A1 (en) |
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