ZOU Yu,ZHANG Guo-quan,XU Xiao-chen,et al.Application of SNAD-Algae Coupling Process in Sludge Digestion Liquid Treatment[J].China Water & Wastewater,2021,37(15 15):14-20.
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Application of SNAD-Algae Coupling Process in Sludge Digestion Liquid Treatment

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第37卷 Number: 15 15 Page: 14-20 Column: Date of publication: 2021-08-01
Author(s):
ZOU Yu1; 2; ZHANG Guo-quan2; XU Xiao-chen2; YANG Feng-lin2
(1. China Vanke Co. Ltd., Shenzhen 518000， China； 2. Key Laboratory of Industrial Ecology and Environmental Engineering ＜Ministry of Education＞， School of Environmental Science and Technology， Dalian University of Technology， Dalian 116024， China)
Keywords:
sludge digestion liquor; algae photobioreactor; SNAD; energy consumption
Abstract:
In recent years, the concept of energy recovery and resource recycling is becoming one of the primary objectives for the development of sewage and sludge treatment industry. Compared with the existing sludge digestion-SNAD-MBBR treatment process of a sludge treatment plant in Dalian, energy consumption and operation cost of the proposed SNAD-algae coupling process were analyzed. The coupling process could further remove pollutants and basically realize resource recovery of carbon, nitrogen and phosphorus in the overall system. The energy consumption and operation cost of the coupling process were 2.55 kW·h/m3 and 1.94 yuan/m3, indicating that the economic and environmental benefits were significant. In addition, energy (CH4) in wastewater was recovered by SNAD-algae coupling process, and the operation of each treatment unit was optimized. The ratio of production capacity to energy consumption was 1.05, which achieved the operation goal of energy neutralization of the whole system.
Last Update: 2021-08-01