YANGTao,HEShuai,CUIRong,et al.Health Protection Zone and Odor Pollution Control of the Underground Wastewater Treatment Plant[J].China Water & Wastewater,2024,40(6):67-73.
地下式污水处理厂的卫生防护距离及臭气污染控制
- Title:
- Health Protection Zone and Odor Pollution Control of the Underground Wastewater Treatment Plant
- Keywords:
- underground wastewater treatment plant; health protection zone (HPZ); setting requirement; odor pollution control
- 摘要:
- 根据《城市排水工程规划规范》（GB 50318—2017），污水处理厂应设置不小于150 m的卫生防护距离。但地下式污水处理厂的主要处理单元均位于密封的箱体内，生产活动产生的臭气污染物不易扩散，对周边环境影响小，并且经收集、处理后影响更小。因此，其卫生防护距离的设置要求有别于传统地上式污水处理厂。结合有关规范、标准的发展变化，总结了污水处理厂卫生防护距离的设置要求和存在问题；结合大气环境要求和环境影响评价，阐述了污水处理厂卫生防护距离的推导方法。通过对部分同类工程案例的调研，总结了地下式污水处理厂卫生防护距离的设置要求——一般不小于100 m，宜从无组织排放污染源的扩散边界开始计算。同时，结合案例介绍了地下式污水处理厂臭气污染控制的具体做法。
- Abstract:
- According to the Code for Urban Wastewater and Stormwater Engineering Planning (GB 50318-2017), the wastewater treatment plant (WWTP) should be set up with a health protection zone (HPZ) of not less than 150 m. However, the main treatment facilities of underground WWTP are located in sealed boxes, and the odorous pollutants generated during operation are not easy to spread, meaning that they have little impact on the surrounding environment, and the impact is much less after collection and treatment. Therefore, its setting requirements of HPZ are different from those of traditional WWTP. This paper summarized the setting requirements and existing problems of HPZ in WWTPs based on the development of relevant codes and standards, and introduced the derivation method of HPZ of WWTP combined with atmospheric environment requirements and environmental impact assessment. Based on the investigation of some similar engineering cases, the requirements for setting HPZ of underground WWTPs were summarized, which was generally not less than 100 m, and should be calculated from the diffusion boundary of fugitively discharge pollution sources. In addition, the specific methods for odor pollution control in underground WWTPs were introduced exemplified by engineering cases.
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