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  • 唐贤春,贺艺,宋鹏,江海鑫,王正晓,戴晓虎.半集中式分质供排水和资源化系统的集成应用[J].环境工程学报,2019,13(7):1612-1622.DOI:10.12030/j.cjee.201811006    [点击复制]
  • TANG Xianchun,HE Yi,SONG Peng,JIANG Haixin,WANG Zhengxiao,DAI Xiaohu.Full-scale application of semi-centralized wastewater treatment and resource recovery system[J].,2019,13(7):1612-1622.DOI:10.12030/j.cjee.201811006   [点击复制]
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半集中式分质供排水和资源化系统的集成应用
唐贤春1,贺艺1,宋鹏2,江海鑫1,王正晓2,戴晓虎1
0
(1.同济大学环境科学与工程学院,上海 200092;2.青岛海湾中水有限责任公司,青岛 266000)
摘要:
针对传统生活污水处理的再生水难以有效回用的问题,采用源分离式半集中式分质供排水和资源化体系处理生活污水,并对实际工程案例的进行了长期监测,探讨了其在污染物去除、污水再生利用以及污泥资源化等方面的效果。结果表明:即使灰水和黑水管道存在一定混接现象,但是灰水和黑水处理模块的COD去除率均超过90%,出水COD分别为10~30 mg·L-1和10~40 mg·L-1;灰水处理模块的TN去除率达到95%,最低小于5 mg·L-1;黑水的TN去除率保持70%~90%,出水水质均可满足回用要求并已用于周边区域;厌氧消化系统1 m3生污泥的产气量达到7.27~ 10.91 m3,甲烷含量达到70%,有机物的降解率30%~50%;投加糖蜜后,单位产气量提高了1倍,有机物的降解率平均提高10%。消化污泥经过脱水后除总汞指标略高外,各主要指标均满足污泥农用中A级污泥标准。基于生活污水源分离的半集中式处理系统,可以对污水、污泥进行有效处理,并就近利用再生水、污泥和沼气。
关键词:  源分离  半集中式  灰水  黑水  厌氧消化
DOI:10.12030/j.cjee.201811006
投稿时间:2018-11-01
基金项目:政府间国际科技合作国家重点研发计划项目2016YFE0123500;国家重点研发计划重点专项2017YFC0403402政府间国际科技合作国家重点研发计划项目(2016YFE0123500);国家重点研发计划重点专项(2017YFC0403402)
Full-scale application of semi-centralized wastewater treatment and resource recovery system
TANG Xianchun1,HE Yi1,SONG Peng2,JIANG Haixin1,WANG Zhengxiao2,DAI Xiaohu1
(1.College of Environmental Science and Engineering, Tongji University, Shanghai 200092, China;2.Qingdao Water Environment Company Gulf Recycle Water Co. Ltd., Qingdao 266000, China)
Abstract:
Due to the difficulty in effectively recycling the reclaimed water from traditional centralized domestic wastewater treatment plant, a novel semi-centralized wastewater treatment and resource recovery project based on domestic wastewater source separation was constructed, and a long-term investigation of its performance on pollutants removal, reclaimed water recycling and sludge resourcing was investigated during its continuous operating. The results showed that the COD removal rates of graywater and blackwater treatment units were higher than 90%, and COD in their effluents were 10~30 mg·L-1 and 10~40 mg·L-1, respectively, although there were some misconnections between graywater and blackwater pipes. TN removal rate of graywater treatment unit reached 95%, and the lowest TN value in effluent was below 5 mg·L-1. Due to the varying influent loadings, the TN removal rate of blackwater treatment unit fluctuated between 70%~90%, but the effluent could still meet the reusing standard. The reclaimed water from both two treatment units were used in greenbelt, washing and toilet flushing in nearby regions. The gas production rates of 1 m3 raw sludge reached 7.27~10.91 m3 with the methane content of over 70%, and the removal rate of volatile solid (VS) varied from 30% to 50%. When molasses was added to perform co-digestion with sludge, the gas production was doubled and the average removal rate of VS increased by 10%. The main indicators of dewatered sludge of anaerobic digestion unit could satisfy the level A of agriculture standard, except for the total mercury content was slightly higher than the standard; the dewatered sludge was collected by neighborhood farmers for gardening and landscaping lands. In a word, the semi-centralized treatment system had good performances on wastewater and sludge treatment, reuse and resource.
Key words:  source separation  semi-centralized  greywater  blackwater  anaerobic digestion