| Autor: |
ZHANG Jinbiao |
| Jazyk: |
čínština |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
Gongye shui chuli, Vol 44, Iss 3, Pp 190-194 (2024) |
| Druh dokumentu: |
article |
| ISSN: |
1005-829X |
| DOI: |
10.19965/j.cnki.iwt.2023-0221 |
| Popis: |
The comprehensive wastewater from a pharmaceutical chemical plant in Shandong Province consists of concentrated wastewater，clean wastewater and domestic wastewater. The concentrated wastewater has the characteristics of high COD and high NH3-N，and therefore requires pretreatment after quality separation to meet the water quality standards for the receiving body of the wastewater treatment plant. Firstly，the concentrated wastewater was pretreated with micro-electrolysis. The pretreated concentrated wastewater was mixed with the clean and domestic wastewaters after removing the suspended solids before undergoing subsequent treatment through an UASB-improved two stage A/O-sequence batch precipitation combination process. Engineering practice showed that this process had a good treatment effect on the comprehensive wastewater，resulting in stable operation and a high capacity to handle impact loads. After treatment，the COD，NH3-N and TN of the effluent were reduced to below 200，3 and 20 mg/L，respectively，meeting the secondary standards in Table 4 of the Comprehensive Sewage Discharge Standard （GB 8978-1996） and meeting the water quality requirements of the receiving water body of the sewage treatment plant. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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