Chemical dosing strategy for sludge deep dewatering based on a linear regression model

FAN Mingyang; BIAN Huichang; YANG Yankun; WANG Shuo

doi:10.13205/j.hjgc.202506004

Volume 43 Issue 6

Jun. 2025

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FAN Mingyang, BIAN Huichang, YANG Yankun, WANG Shuo. Chemical dosing strategy for sludge deep dewatering based on a linear regression model[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(6): 34-40. doi: 10.13205/j.hjgc.202506004

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FAN Mingyang, BIAN Huichang, YANG Yankun, WANG Shuo. Chemical dosing strategy for sludge deep dewatering based on a linear regression model[J]. ENVIRONMENTAL ENGINEERING , 2025, 43(6): 34-40. doi: 10.13205/j.hjgc.202506004

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Chemical dosing strategy for sludge deep dewatering based on a linear regression model

doi: 10.13205/j.hjgc.202506004

1. Shanxi Jinlian Environmental Technology Co., Ltd., Taiyuan 030400, China;
2. Jiangsu Key Laboratory of Anaerobic Biotechnology, School of Environment and Ecology, Jiangnan University, Wuxi 214122, China;
3. Jiangsu Collaborative Innovation Center of Water Treatment Technology & Material, Suzhou 215009, China

Received Date: 2024-12-27
Accepted Date: 2025-02-17
Rev Recd Date: 2025-02-07

Abstract

Abstract

This research focuses on four types of sludge collected from three wastewater treatment plants in Wuxi. An analysis was conducted on the sludge quality indicators resulting from diverse wastewater treatment methodologies， and an investigation was undertaken into the impact of varying chemical dosage proportions on sludge dewaterability. The findings indicated that the key factors affecting sludge dewatering performance were sludge solid content， protein and polysaccharide contents in extracellular polymeric substances （EPS）， and sludge specific resistance to filtration （SRF）. Based on a uniform experimental design and a linear regression model， a linear relationship was established between the dosage of chemicals and the capillary suction time （CST）， organic matter content， and solid content of sludge. The model validation results showed that within the range of the dosage ratio （lime： 13% to 25%； PAM： 1‰ to 9‰）， the standard error of the equation was below 1.5， indicating good applicability of this model. This study provides a rigorous scientific basis for the application of sludge dewatering agents， thereby enhancing dewatering efficiency， reducing treatment costs， and promoting sustainable sludge management and disposal practices.
- chemical dosing,
- dewatering performance,
- model construction,
- linear regression model

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References(23)

References

[1]	WANG L，HE R，LEI H T. General review of sludge treatment and disposal technology for urban WWTP［J］. Water Purification Technology，2022，41（11）:16-21. 王莉，何蓉，雷海涛. 城镇污水处理厂污泥处理处置技术现状综述［J］. 净水技术，2022，41（11）:16-21.
[2]	WANG Z W，CAO R，YANG Y K，et al. Performance and pilot-scale efficiency of polyquaternary ammonium in sludge deep dewatering process［J］. Chemical Industry and Engineering Progress，2019，38（7）:3458-3464. 王子文，曹蓉，杨艳坤，等. 聚季铵盐调理污泥深度脱水过程与中试效能［J］. 化工进展，2019，38（7）:3458-3464.
[3]	SANG W，DENG M，PANG L，et al. Insights into the effects of cobalt ferrite nanoparticles activated peroxymonosulfate on waste activated sludge dewaterability during ciprofloxacin degradation［J］. Journal of Environmental Chemical Engineering，2024，12（4）.
[4]	SHAO L，PEIPEI H E，GUANGHUI Y U，et al. Effect of proteins，polysaccharides，and particle sizes on sludge dewaterability［J］. Journal of Environmental Sciences，2009（1）:83-88.
[5]	LIU J B，LI Y M，LV J，et al. Performance and factors analysis of sludge dewatering in different wastewater treatment processes［J］. Environmental Science，2015（10）:3794-3800. 刘吉宝，李亚明，吕鑑，等. 污水处理厂不同工艺的污泥脱水效能分析及其影响因素研究［J］. 环境科学，2015（10）:3794-3800.
[6]	Technical Committee on Standardization of Water Supply and Drainage Products，Ministry of Construction. Standard methods for the examination of sludge from municipal wastewater treatment plants:CJ/T 221—2023［S］. 2005. 建设部给水排水产品标准化技术委员会. 城镇污泥标准检验方法:CJ/T 221—2023［S］. 2005.
[7]	GAUDY A F. Colorimetric determination of protein and carbohydrate［J］. Ind Water Wastes，1962，7:22.
[8]	CHEN M X，ZHOU H Z，ZHU X H，et al. Optimization of determination of protein in activated sludge by bradford method［J］. Environmental Science & Technology，2015，38（4）:1-5. 陈茂霞，周后珍，朱晓华，等. 考马斯亮蓝法检测活性污泥中蛋白质含量优化［J］. 环境科学与技术，2015，38（4）:1-5.
[9]	ADAV S S，LEE D J. Extraction of extracellular polymeric substances from aerobic granule with compact interior structure［J］. Journal of Hazardous Materials，2008，154（1-3）:1120-1126.
[10]	CHOW A T，GUO F，GAO S，et al. Size and XAD fractionations of trihalomethane precursors from soils［J］. Chemosphere，2006，62（10）:1636-1646.
[11]	ZHANG W，XIAO P，LIU Y，et al. Understanding the impact of chemical conditioning with inorganic polymer flocculants on soluble extracellular polymeric substances in relation to the sludge dewaterability［J］. Separation and Purification Technology，2014，132:430-437.
[12]	SUN Q Q，CHEN Y L. Characteristics of carbon emission from municipal wastewater treatment plants in a south-China provinc［J］. Chinese Journal of Environmental Engineering，2023，17（10）:3231-3244. 孙强强，陈贻龙. 南方某省城镇污水处理厂碳排放特征［J］. 环境工程学报，2023，17（10）:3231-3244.
[13]	YA T，LIU J，ZHANG M，et al. Metagenomic insights into the symbiotic relationship in Anammox Consortia at reduced temperature［J］. Water Research，2022，225:119184.
[14]	LIN N，ZHU W，FAN X，et al. Key factor on improving secondary advanced dewatering performance of municipal dewatered sludge:selective oxidative decomposition of polysaccharides［J］. Chemosphere，2020，249:126108.
[15]	LI X Y，YANG S F. Influence of loosely bound extracellular polymeric substances（EPS）on the flocculation，sedimentation and dewaterability of activated sludge［J］. Water Research，2007，41（5）:1022-1030.
[16]	TANG T K，WANG Z W，WANG Y，et al. Construction of dewatering strategies and mathematic model from sludge based on sludge characteristics［J］. Acta Scientiae Circumstantiae，2019，39（10）:3475-3481. 杨艳坤，王子文，王燕，等. 基于泥质的污泥脱水策略与数学模型构建研究［J］. 环境科学学报，2019，39（10）:3475-3481.
[17]	LI Y，JIN Y，BORRION A，et al. Effects of organic composition on the anaerobic biodegradability of food waste［J］. Bioresource Technology，2017，243:836-845.
[18]	LIANG S. Principal component analysis on sewage sludge characteristics and its implication to dewatering performance with Fe²⁺/persulfate-skeleton builder conditioning［J］. International Journal of Environmental Science and Technology，2016，13:2283-2292.
[19]	HE Z D，WANG D Z，YAN C，et al. Effects of bioleaching and chemical conditioning on sludge dewaterability and physicochemical properties［J］. China Environmental Science，2019，39（3）:1019-1025. 何足道，王电站，颜成，等. 城市污泥生物沥浸法和化学法调理的效果比较:对污泥理化性质及其深度脱水性能的影响研究［J］. 中国环境科学，2019，39（3）:1019-1025.
[20]	WANG H F，WANG H J，HU H，et al. Applying rheological analysis to understand the mechanism of polyacrylamide（PAM）conditioning for sewage sludge dewatering［J］. RSC Advances，2017，7（48）:30274-30282.
[21]	ZHANG B，JI M，WANG F，et al. Damage of EPS and cell structures and improvement of high-solid anaerobic digestion of sewage sludge by combined（Ca（OH）₂+ multiple-transducer ultrasonic）pretreatment［J］. RSC advances，2017，7（37）:22706-22714.
[22]	HE W，LUO J，WU Y，et al. Differently charged polyacrylamides（PAMs）significantly affect adsorption affinity and associated floc growth behaviors during ballasted flocculation:Performance and mechanism［J］. Separation and Purification Technology，2024，329:125279.
[23]	WU C W. Corrosion-wear study of 304 stainless steel in various NaCl solutions［J］. Wear，1993，162:950-953.