[1]任征然,高金华,王佳伟,等.热水解温度对污泥生物降解性和出水COD的影响[J].中国给水排水,2025,41(15):1-7.
　RENZheng-ran,GAOJin-hua,WANGJia-wei,et al.Impacts of Thermal Hydrolysis Temperature on Sludge Biodegradability and Effluent COD in Wastewater Treatment Plant[J].China Water & Wastewater,2025,41(15):1-7.
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热水解温度对污泥生物降解性和出水COD的影响

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第41卷 期数: 2025年第15期 页码: 1-7 栏目: 出版日期: 2025-08-01
Title:
Impacts of Thermal Hydrolysis Temperature on Sludge Biodegradability and Effluent COD in Wastewater Treatment Plant
作者:
任征然1,2， 高金华1,2， 王佳伟1,2， 张含1,2， 张荣兵1,2， 何馨1， 文洋1,2
（1.北京城市排水集团有限责任公司，北京 100044；2.北京市污水资源化工程技术研究中心，北京 100124）
Author(s):
REN　Zheng-ran1，2， GAO　Jin-hua1，2， WANG　Jia-wei1，2， ZHANG　Han1，2， ZHANG　Rong-bing1，2， HE　Xin1， WEN　Yang1，2
（1. Beijing Drainage Group Co. Ltd.， Beijing 100044， China； 2. Beijing Engineering Technology Research Center for Municipal Sewage Reclamation， Beijing 100124， China）
关键词:
热水解;  厌氧消化;  污泥性质;  沼气产率;  难降解COD
Keywords:
thermal hydrolysis;  anaerobic digestion;  sludge property;  biogas yield;  refractory COD
摘要:
通过110~170 ℃的污泥热水解和40 ℃中温厌氧消化试验，探究了热水解温度对污泥理化性质、沼气产率及难降解有机物的影响。结果显示，随着温度升高，污泥固体有机物质逐渐溶解，可溶性有机物浓度显著增加。在170 ℃时可溶性蛋白质和多糖分别达到14.7和2.5 g/L（均以COD计），挥发性脂肪酸（VFAs）浓度也随温度上升而增加。这些变化提高了污泥的沼气产量，挥发性固体（VS）产气率从345 L/g提升至513 L/g。然而，较高的温度会导致厌氧消化滤液中难降解COD浓度增加，由未热水解污泥的1 600 mg/L增至170 ℃热水解后的2 888 mg/L。在满负荷运行状态下，不采用热水解技术时，消化污泥滤液回流会使污水厂出水COD升高至16.4 mg/L；当热水解温度为170 ℃时，污水厂的出水COD升高至19.2 mg/L。合理控制热水解温度能有效减少难降解COD生成量，降低其对污水处理厂出水水质的影响。
Abstract:
The effects of thermal hydrolysis temperature on the physicochemical properties, biogas yield, and refractory organic matter of sludge were investigated through experiments involving sludge thermal hydrolysis at temperatures ranging from 110 ℃ to 170 ℃ and subsequent anaerobic digestion at 40 ℃. The results showed that as the temperature increased, solid organic matter gradually dissolved, leading to a significant increase in the concentration of soluble organic matter. At 170 ℃, the concentrations of soluble protein and polysaccharides in the sludge reached 14.7 g/L and 2.5 g/L, respectively (both calculated as COD), while the concentration of volatile fatty acids (VFAs) also rose with increasing temperature. These changes enhanced biogas production in sludge, with the VS biogas yield increasing from 345 L/g to 513 L/g. Thermal hydrolysis at 170 ℃ increased the concentration of refractory COD in the anaerobic digestion filtrate to 2 888 mg/L, compared to 1 600 mg/L for untreated sludge. Under full?load operation, without using thermal hydrolysis technology, the reflux of digested sludge filtrate would increase the effluent COD to 16.4 mg/L; when the temperature was 170 ℃, the COD increased to 19.2 mg/L. Proper control of the temperature can effectively reduce the generation of refractory COD, minimizing its impact on the effluent quality of the wastewater treatment plant.

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更新日期/Last Update: 2025-08-01