[1]李松松,付志刚,王焕升,等.基于服务区高氨氮污水的电化学处理工艺研究[J].中国给水排水,2025,41(3):105-113.
　LISong-song,FUZhi-gang,WANGHuan-sheng,et al.Electrochemical Process for Treatment of High Ammonia Nitrogen Wastewater in Service Area[J].China Water & Wastewater,2025,41(3):105-113.
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基于服务区高氨氮污水的电化学处理工艺研究

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第41卷 期数: 2025年第3期 页码: 105-113 栏目: 出版日期: 2025-02-01
Title:
Electrochemical Process for Treatment of High Ammonia Nitrogen Wastewater in Service Area
作者:
李松松1， 付志刚1， 王焕升2， 宋英豪2， 崔志峰2， 林青山3， 何克杰4
（1.北京市首发工贸有限责任公司，北京 101199；2.北京化工大学 高新技术研究院，北京 100029；3.重庆大学 能源与动力工程学院，重庆 400044；4.国家电投集团远达环保工程有限公司，重庆 401122）
Author(s):
LI　Song-song1， FU　Zhi-gang1， WANG　Huan-sheng2， SONG　Ying-hao2， CUI　Zhi-feng2， LIN　Qing-shan3， HE　Ke-jie4
（1. Beijing Shoufa Industrial and Trade Co. Ltd.， Beijing 101199， China； 2. High?Tech Research Institute， Beijing University of Chemical Technology， Beijing 100029， China； 3. School of Energy and Power Engineering， Chongqing University， Chongqing 400044， China； 4. SPIC Yuanda Environmental Protection Co. Ltd.， Chongqing 401122， China）
关键词:
服务区高氨氮污水;  电化学处理;  响应面分析;  预测模型;  示范工程
Keywords:
high ammonia nitrogen wastewater in service area;  electrochemical treatment;  response surface analysis;  prediction model;  demonstration project
摘要:
针对服务区污水中NH3-N浓度高和C/N低的问题，通过小试、中试和示范工程3 个阶段，对电化学处理服务区高NH3-N污水的工艺可行性进行了系统研究，并探讨了电化学处理的关键影响因素，建立了预测优势工艺条件的模型，验证了示范工程的有效性。在小试阶段，采用单因素法确定了电压、加盐量和停留时间为电化学去除NH3-N的关键影响因素。中试阶段，根据响应面分析法建立了单位电耗NH3-N去除量和吨水耗电量的预测模型，两个预测模型的决定系数（R2）分别达到0.98和0.99，确定的优势工艺条件如下：电压为8.3~8.5 V、加盐量为1 000~1 600 mg/L、停留时间为30~45 min，在该条件下单位电耗的NH3-N去除量为9.2~11.2 g/（kW.h）、吨水耗电量为4.3~7.5 kWh.m3。最后，在最优工艺条件下（电压为8.5 V、加盐量为1 400 mg/L、停留时间为45 min）通过示范工程验证了电化学预处理耦合生化工艺的可行性和经济性。该工艺能从源头降低NH3-N浓度，减轻后续传统生化处理单元的负荷，以确保出水NH3-N稳定达标。
Abstract:
To address the issues of high NH3-N and low carbon to nitrogen ratio (C/N) in the wastewater in the service area, this study systematically investigated the feasibility of electrochemical treatment through three phases: bench experiment, pilot test, and a demonstration project. Key influencing factors of electrochemical treatment were analyzed, and a predictive model was developed to identify optimal process conditions, thereby validating the effectiveness of the demonstration project. During the bench experimental phase, the single-factor method was employed to identify voltage, salt dosage, and retention time as the critical parameters for the electrochemical removal of NH3-N. During the pilot test phase, prediction models for NH3-N removal per unit power consumption and power consumption per ton of wastewater were developed using response surface methodology. The coefficients of determination (R2) for the two models were 0.98 and 0.99, respectively. The optimal process conditions identified were as follows: voltage ranging from 8.3 V to 8.5 V, salt dosage between 1 000 mg/L and 1 600 mg/L, and retention time from 30 minutes to 45 minutes. Under these optimized conditions, the NH3-N removal per unit power consumption ranged from 9.2 g/(kW·h) to 11.2 g/(kW·h), while the power consumption per ton of wastewater varied from 4.3 kW·h/m3 to 7.5 kW·h/m3. Finally, the demonstration project confirmed the feasibility and economic viability of the electrochemical pretreatment coupled with biochemical processes under optimal conditions (voltage of 8.5 V, salt dosage of 1 400 mg/L, retention time of 45 minutes). This approach effectively reduced NH3-N at the source, thereby decreasing the load on subsequent traditional biochemical treatment processes to ensure the effluent NH3-N always lower than the discharge standard.
更新日期/Last Update: 2025-02-01