刘雪峰1,
杨鹏1
1.华南理工大学电力学院，广州 510641
基金项目: 国家自然科学基金资助项目 (51778234)
广东省自然科学基金资助项目 (2015A030310303)
广东省省级科技计划项目 (2017A020216024)
中央高校基本科研业务费专项资金资助项目 (B6150170)
广东省能源高效清洁利用重点实验室（华南理工大学） (2013A061401005)
Ventilation and deodorizing effect of vertical ionizing air duct in dewatering room under different air supply volume and exhaust volume
CHEN Siwei1,,LIU Xuefeng1,
YANG Peng1
1.School of Electric Power, South China University of Technology, Guangzhou 510641,China
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摘要:以地埋式污水处理厂的通风排污系统为研究对象，污水处理时产生的恶臭气体严重影响室内外环境，通风系统中排风与送风风量的合理匹配对于改善厂区内部空气品质至关重要。以空气品质最差的脱水机房为例，对传统的无组织渗风以及竖直管侧向离子风下不同风量进行数值模拟，从速度场分布，氨气敏感浓度面积占比，工作区域平均空气龄，以及通风除臭效果进行仿真分析。结果表明，竖直管侧向送离子风比传统无组织渗风对改善脱水机房空气品质作用更显著，提高排风风量和新风比可以有效降低室内恶臭浓度和提高排污效率，并且提高新风比对提高排污效率的影响更为显著，给工作人员提供更好的风感和更新鲜的空气。
关键词: 脱水机房/
空气品质/
离子除臭/
数值模拟/
排污效率
Abstract:Taking the ventilation and blowdown system of buried water treatment plant as the research object, foul gas produced by sewage treatment seriously affects indoor and outdoor environment. The reasonable matching of exhaust air volume and air supply volume in the ventilation system is essential for the improvement of air quality inside the plant area. Take the dewatering room which has the worst air quality as an example, numerical simulation of the traditional air supply model and the situation of different air flow within the ion wind from the sides of vertical tubes were made. And simulation analysis was made from the perspective of velocity field distribution, area ratio of ammonia sensitive concentration, mean air age in the work area , and ventilation deodorization effect. The results showed that relative to the traditional air supply mode, the effect of the composite air supply mode on the improvement of the air quality of the dewatering room can be more significant. Increasing the exhaust air volume and the fresh air ratio can effectively reduce the indoor odor concentration and improve the contaminant removal efficiency. Improving fresh air ratio can have a more significant impact on improving the contaminant removal efficiency, and it can give the staff a better sense of wind and fresh air.
Key words:dewatering room/
air quality/
ion deodorization/
numerical simulation/
contaminant removal efficiency.
| [1] | 段寒涛. 地埋式污水处理厂技术及应用前景分析[J]. 中国新技术新产品, 2017(10):97-98 10.3969/j.issn.1673-9957.2017.10.061 |
| [2] | 牛超, 陶飞，明皓. 浅谈我国地下污水处理厂的发展现状及前景[J]. 才智, 2016(4):259 |
| [3] | 杨鑫, 祝双燕，涂小平，等. 城镇污水处理过程中的通风除臭方法和设计[J]. 甘肃科技, 2016, 32(17):66-67 10.3969/j.issn.1000-0952.2016.17.023 |
| [4] | CAPELLI L, SIRONI S, ROSSO R D, et al.Predicting odour emissions from wastewater treatment plants by means of odour emission factors[J].Water Research, 2009, 43(7):1977-1985 10.1016/j.watres.2009.01.022 19232669 |
| [5] | 杨婧. 浅析城镇污水处理厂通风系统设计[J]. 甘肃科技, 2017, 33(7):90-91 10.3969/j.issn.1000-0952.2017.07.029 |
| [6] | 潘建华. 高能离子除臭工艺在广州猎德污水处理厂的应用[J]. 中国市政工程,2013(1):32-33 |
| [7] | 江燕. 氧离子法除臭技术及其运用[J]. 科技与企业, 2012(1):160-161 |
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| [9] | 李荷萍, 钟珂. 新风量和气流组织形式对室内污染物排除效果的影响[J]. 洁净与空调技术, 2007(1):18-21 10.3969/j.issn.1005-3298.2007.01.006 |
| [10] | 凌继红, 于会洋, 李猛,等. 气流组织对负压隔离病房排污效率的影响[J]. 天津大学学报(自然科学与工程技术版), 2014,47(2):174-179 10.11784/tdxbz201206039 |
| [11] | 李强民, 邓伟鹏. 排除人员活动区内人体释放污染物的有效通风方式--置换通风[J]. 暖通空调, 2004, 34(2):1-4+17 10.3969/j.issn.1002-8501.2004.02.001 |
| [12] | 李冬宁, 李先庭, 窦春鹏. 实际空调系统中空气龄的计算方法[C]//中国建筑学会和中国制冷学会. 全国暖通空调制冷2002年学术文集.北京:中国建筑工业出版社,2002:81-87 |
| [13] | TIAN L, LIN Z, LIU J, et al.The impact of temperature on mean local air age and thermal comfort in a stratum ventilated office[J].Building & Environment, 2011, 46(2):501-510 10.1016/j.buildenv.2010.08.013 |
| [14] | 苏新明, 王晶, 李西园,等. 载人航天器乘员舱空气龄分布数值仿真及试验研究[J]. 航天器工程, 2014, 23(2):80-86 10.3969/j.issn.1673-8748.2014.02.013 |
| [15] | 蒋选, 李先庭, 邵晓亮,等. 局部纯净风量的物理意义、获取方法及应用场合[J]. 暖通空调, 2014,44(7):86-92 |
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不同送排风量下脱水机房竖直离子风管的通风除臭效果
陈思维1,,刘雪峰1,
杨鹏1
1.华南理工大学电力学院，广州 510641
基金项目: 国家自然科学基金资助项目 (51778234) 广东省自然科学基金资助项目 (2015A030310303) 广东省省级科技计划项目 (2017A020216024) 中央高校基本科研业务费专项资金资助项目 (B6150170) 广东省能源高效清洁利用重点实验室（华南理工大学） (2013A061401005)
关键词: 脱水机房/
空气品质/
离子除臭/
数值模拟/
排污效率
摘要:以地埋式污水处理厂的通风排污系统为研究对象，污水处理时产生的恶臭气体严重影响室内外环境，通风系统中排风与送风风量的合理匹配对于改善厂区内部空气品质至关重要。以空气品质最差的脱水机房为例，对传统的无组织渗风以及竖直管侧向离子风下不同风量进行数值模拟，从速度场分布，氨气敏感浓度面积占比，工作区域平均空气龄，以及通风除臭效果进行仿真分析。结果表明，竖直管侧向送离子风比传统无组织渗风对改善脱水机房空气品质作用更显著，提高排风风量和新风比可以有效降低室内恶臭浓度和提高排污效率，并且提高新风比对提高排污效率的影响更为显著，给工作人员提供更好的风感和更新鲜的空气。
English Abstract
Ventilation and deodorizing effect of vertical ionizing air duct in dewatering room under different air supply volume and exhaust volume
CHEN Siwei1,,LIU Xuefeng1,
YANG Peng1
1.School of Electric Power, South China University of Technology, Guangzhou 510641,China
Keywords: dewatering room/
air quality/
ion deodorization/
numerical simulation/
contaminant removal efficiency
Abstract:Taking the ventilation and blowdown system of buried water treatment plant as the research object, foul gas produced by sewage treatment seriously affects indoor and outdoor environment. The reasonable matching of exhaust air volume and air supply volume in the ventilation system is essential for the improvement of air quality inside the plant area. Take the dewatering room which has the worst air quality as an example, numerical simulation of the traditional air supply model and the situation of different air flow within the ion wind from the sides of vertical tubes were made. And simulation analysis was made from the perspective of velocity field distribution, area ratio of ammonia sensitive concentration, mean air age in the work area , and ventilation deodorization effect. The results showed that relative to the traditional air supply mode, the effect of the composite air supply mode on the improvement of the air quality of the dewatering room can be more significant. Increasing the exhaust air volume and the fresh air ratio can effectively reduce the indoor odor concentration and improve the contaminant removal efficiency. Improving fresh air ratio can have a more significant impact on improving the contaminant removal efficiency, and it can give the staff a better sense of wind and fresh air.
