http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2011045837-A
Outgoing Links
| Predicate | Object |
|---|---|
| assignee | http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_3b09e439b8fc75d50f5b4a76ecb4fcbf |
| classificationCPCAdditional | http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/Y02W10-20 |
| classificationIPCInventive | http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F3-34 http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/C02F11-02 |
| filingDate | 2009-08-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor | http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_8d1cc667f2beedb9f636853a88ebcbf8 |
| publicationDate | 2011-03-10-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber | JP-2011045837-A |
| titleOfInvention | Wastewater treatment method |
| abstract | [PROBLEMS] To stably remove phosphorus and nitrogen simultaneously from wastewater by a low aeration activated sludge method. In addition, denitrification treatment and dephosphorization treatment are realized in the low aeration activated sludge treatment process without adding a new treatment process, and equipment construction costs and operation management costs are kept low. SOLUTION: A reaction tank 1 for low-aeration treatment of inflow wastewater containing organic matter, a precipitation tank 2 for precipitation-separation treatment of the treated water of the low-aeration treatment, and sludge for re-low-aeration treatment of the precipitated sludge subjected to the precipitation separation treatment. In the wastewater treatment method having the digester 3 and mixing the supernatant water obtained in the sludge digester 3 into the influent wastewater, the ignition residue concentration of the supernatant of the sludge digester 3 is higher than that of the influent wastewater. To maintain. The superficial water ignition residue density | concentration is 300 mg / L or more, DO of the reaction tank 3 is 1 mg / L or less. [Selection] Figure 1 |
| isCitedBy | http://rdf.ncbi.nlm.nih.gov/pubchem/patent/JP-2012041210-A |
| priorityDate | 2009-08-27-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type | http://data.epo.org/linked-data/def/patent/Publication |
Incoming Links
Total number of triples: 29.