改良A2O升级沈阳得利满AO工艺的可行性研究

赵蓉; 郑涛; 孙晨; 王思宇; 郭鹏翔; 田智勇; 向连城; 李海波

doi:10.3969/j.issn.1674-991X.2016.06.079

改良A2O升级沈阳得利满AO工艺的可行性研究

doi: 10.3969/j.issn.1674-991X.2016.06.079

赵蓉¹,
郑涛¹,
孙晨^2,3,
王思宇^2,3,
郭鹏翔⁴,
田智勇^2,3*, ,,
向连城^2,3,
李海波^2,3

1.
国电东北环保产业集团有限公司北部污水处理厂
2.
环境基准与风险评估国家重点实验室,中国环境科学研究院
3.
中国环境科学研究院城市水环境科技创新基地
4.
太极计算机股份有限公司

详细信息

通讯作者:
田智勇 E-mail: hkytzy2008@163.com

中图分类号: X703.1
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出版历程
- 收稿日期: 2016-04-20
- 修回日期: 2016-05-30
- 刊出日期: 2016-11-20

Feasibility Study on Modified A²O Process to Upgrade and Reconstruct Shenyang Degremont Anoxic Oxic Process

1.
Guodian Northeast China Environmental Protection Industry Group Co., Ltd. Guodian Shenyang North Wastewater Treatment Plant
2.
State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences
3.
Department of Urban Water Environmental Research, Chinese Research Academy of Environmental Sciences
4.
Taiji Computer Corporation Limited

More Information

Corresponding author: TIAN Zhiyong E-mail: hkytzy2008@163.com

摘要

摘要: 以国电沈阳北部污水处理厂20万t/d沈阳得利满AO（SDAO）工艺为研究对象，通过原SDAO工艺初沉池及污泥恢复区改造为厌氧区和预缺氧区的方式升级为改良A²O工艺，并考察了升级工艺的处理效果。结果表明：在进水温度、COD_Cr/TN，COD_Cr，TN和TP浓度分别为（12.2±0.5）℃、4.0~6.0、200 mg/L、35.9 mg/L和3.05 mg/L条件下，以醋酸钠（折合成COD_Cr为50 mg/L）为外加碳源添加至进水，改良A²O工艺出水的TN、NH₄⁺-N、TP浓度及COD_Cr分别为11.8、1.34、0.17和31.7 mg/L。改良A²O对COD_Cr和NH₄⁺-N的去除率与原工艺相似，且均达到较好的去除效果；TN的去除效率由35.5%提高至67.8%；原工艺不具备除磷功能，改良A²O工艺对TP的去除率达94.3%。综上所述，SDAO工艺在未增设构筑物的条件下完成了工艺的升级，升级后的改良A²O工艺实现了氮磷污染物的高效去除。
- 沈阳得利满AO（SDAO）工艺 /
- 改良A²O工艺 /
- 脱氮除磷 /
- 升级改造
Abstract: Based on the 200 000 t/d Shenyang Degremont Anoxic Oxic process (SDAO) of Guodian Shenyang North Wastewater Treatment Plant, the primary settling tank and the sludge recovery zone in SDAO process were transformed to anaerobic zone and pre-anoxic zone in modified A²O process. The pollutants removal performances of the modified A²O process were investigated. The results showed that the modified A²O process effluent of TN, NH₄⁺-N, TP and COD_Cr was 11.8, 1.34 0.17 and 31.7 mg/L, when influent temperature, COD/TN ratio, COD_Cr, TN and TP were around (12.2±0.5)℃, 4.0-6.0, 200 mg/L, 35.9 mg/L and 3.05 mg/L with adding sodium acetate (COD_Cr of 50 mg/L). Modified A²O process removal performance of COD_Crand NH₄⁺-N was similar to SDAO process. However, TN removal ratio in the modified A²O process could increase from 35.5% to 67.8% compared with the SDAO process. Moreover, TP removal ratio in the modified A²O process could increase to 94.3% by contrast with incompetent TP removal performance of SDAO process. In the condition without reconstruction of pre-anoxic zone and anaerobic zone it was able to enhance nitrogen and phosphorus removal performance obviously.
- Shenyang Degremont Anoxic Oxic (SDAO) process /
- modified A²O process /
- biological nutrients removal /
- upgrading and reconstruction

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