焦点提醒:药剂结合高温对低无机质污泥水解增进研究 江丽华1,2, 卓桂华3, 陈细妹4, 林鸿5, 刘常青6, 甄广印7, 郑育毅1,2 (1.福建师范年夜学情况与资本学院、碳中和现代财产学院 福建省污染节制与资本轮回操纵重点尝试室,福建 福州 350007;2.城市废 物质源化手艺与治理福建省高校项目研究中间,福建 福州 350007;3.福建省情况科学研究院,福建 福州 350013;4.福州中城科再生资本操纵无限公司,福建 福州 350011;5.福建省金皇环保科技无限公司,福建 福州 350002 - 首 页
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- English上一篇下一篇[1]江丽华,卓桂华,陈细妹,等.药剂结合高温对低无机质污泥水解增进研究[J].中国给水排水,2022,38(19):86-92. JIANGLi-hua,ZHUOGui-hua,CHENXi-mei,et al.Effects of Chemical Agent Combined with High Temperature on Hydrolysis of Sludge with Low Organic Content[J].China Water & Wastewater,2022,38(19):86-92.点击复制
药剂结合高温对低无机质污泥水解增进研究中国给水排水[ISSN:1000-4062/CN:12-1073/TU]卷:第38卷期数:2022年第19期页码:86-92栏目:出书日期:2022-10-01- Title:
- Effects of Chemical Agent Combined with High Temperature on Hydrolysis of Sludge with Low Organic Content
- 作者:
- 江丽华1,2, 卓桂华3, 陈细妹4, 林鸿5, 刘常青6, 甄广印7, 郑育毅1,2
- (1.福建师范年夜学情况与资本学院、碳中和现代财产学院 福建省污染节制与资本轮回操纵重点尝试室,福建 福州 350007;2.城市废料资本化手艺与治理福建省高校项目研究中间,福建 福州 35����APP0007;3.福建省情况科学研究院,福建 福州 350013;4.福州中城科再生资本操纵无限公司,福建 福州 350011;5.福建省金皇环保科技无限公司,福建 福州 350002;6.福建师范年夜学 地舆科学学院、碳中和将来手艺学院,福建 福州 350007;7.华东师范年夜学 生态与情况科学学院,上海 200241)
- Author(s):
- JIANG Li-hua1,2, ZHUO Gui-hua3, CHEN Xi-mei4, LIN Hong5, LIU Chang-qing6, ZHEN Guang-yin7, ZHENG Yu-yi1,2
- (1. Fujian Key Laboratory of Pollution Control and Resource Reuse, College of Environmental and Resource Sciences and College of Carbon Neutral Modern Industry, Fujian Normal University, Fuzhou 350007, China; 2. Fujian College and University Engineering Research Center for MunicipalWaste Resourcization and Management, Fuzhou 350007, China; 3. Fujian Academy of Environmental Sciences, Fuzhou 350013, China; 4. Fuzhou Zhongchengke Renewable Resources Utilization Co. Ltd., Fuzhou 350011, China; 5. Fujian Jinhuang Environmental Sci?Tech Co. Ltd., Fuzhou 350002, China; 6. School of Geographical Sciences and School of Carbon Neutrality Future Technology, Fujian Normal University, Fuzhou 350007, China; 7. School of Ecological and Environmental Science, East China Normal University, Shanghai 200241, China)
- 要害词:
- 低无机质污泥;高温热水解;结合预处置;厌氧消化;无机物溶出
- Keywords:
- sludge with low organic content;thermophilic hydrolysis;combined pretreatment;anaerobic digestion;dissolution of organic matter
- 摘要:
- 厌氧消化是实现污泥不变和能源收受接管的首要路子之一。我国南边地域污水处置厂普遍采取生物养分物去除工艺,遍及具有进水无机物含量低的问题,致使污泥无机质含量也偏低(VS/TS<0.6)。针对南边典型低无机质污泥,在120 ℃、0.5 h前提下别离投加NaOH、Ca(OH)2和CaCl2进行结合高温热水解预处置后,进行中温厌氧消化。成果注解,投加药剂结合高温热水解增进了消融性无机碳(SOC)、可溶糖、可溶性卵白质的溶出,进而提高了积累产甲烷量。在高温热水解预处置进程中,药剂对无机物的溶出结果为NaOH>Ca(OH)2>CaCl2。在后续厌氧消化进程中,因为CaCl2可提高SCOD中碳水化合物占比,投加CaCl2结合高温热水解后总化学需氧量(TCOD)和总糖降解结果较着,TCOD降解量为25 326 mg/L且总糖降解量在TCOD降解量中占比最高(87.7%),因此3 种药剂中CaCl2的积累产甲烷量最高(183.1 mL/gVS)。CaCl2结合高温热水解预处置较NaOH、Ca(OH)2更能提凹凸无机质污泥的厌氧产沼机能。
- Abstract:
- Anaerobic digestion is one of the main strategies to facilitate sludge stabilization and energy recovery. The biological nutrient removal process is widely applied in wastewater treatment plants in southern China, and the widespread low content of influent organic matter results in the low content of sludge organic matter (VS/TS < 0.6). In this paper, the typical sludge with low organic content in southern China was first pretreated with chemical agents including NaOH, Ca(OH)2and CaCl2combined with thermophilic hydrolysis at 120 ℃ for 0.5 h. Then, the sludge was used as the substrate for mesophilic anaerobic digestion. The addition of chemical agents combined with thermophilic hydrolysis promoted the release of soluble organic carbon (SOC), soluble sugar and soluble protein, and increased the cumulative methane production. In the process of thermophilic hydrolysis pretreatment, the efficiency of chemical agents for dissolution of organic matters in descending order was NaOH, Ca(OH)2and CaCl2. In the subsequent anaerobic digestion process, since CaCl2promoted the proportion of carbohydrates in SCOD, the degradation efficiencies of total chemical oxygen demand (TCOD) and total sugar were obviously improved after dosing CaCl2combined with thermophilic hydrolysis. The degradation of TCOD was 25 326 mg/L, and the degradation of total sugar accounted for the highest proportion of the degraded TCOD (87.7%), so the cumulative methane production of CaCl2among the three agents was the highest (183.1 mL/gVS). The addition of CaCl2combined with thermophilic hydrolysis pretreatment was more effective to enhance the anaerobic biogas production performance of low organic sludge than NaOH and Ca(OH)2.
更新日期/Last Update:2022-10-01