MBBR用于某CAST工艺污水处理厂提标改造的效能及碳排放分析

张玲丽; 顾敦罡; 陆嘉麒; 张楠; 李光辉; 胡立江; 贾洪柏; 王寅义

doi:10.12153/j.issn.1674-991X.20220267

MBBR用于某CAST工艺污水处理厂提标改造的效能及碳排放分析

doi: 10.12153/j.issn.1674-991X.20220267

张玲丽^1,,
顾敦罡^1, ,,
陆嘉麒¹,
张楠¹,
李光辉¹,
胡立江^{2, 3},
贾洪柏^{2, 3},
王寅义⁴

1.
上海工程技术大学化学化工学院
2.
安吉国千环境科技有限公司
3.
浙江国阡环境与节能工程研究院
4.
安吉净源污水处理有限公司

基金项目: 上海市地方院校能力建设项目（21010501400）

详细信息

作者简介:
张玲丽(1996—)，女，硕士研究生，主要从事水处理过程建模与优化研究，857089307@qq.com

通讯作者:
顾敦罡(1990—)，男，讲师，主要从事水环境治理与修复研究，dgu@sues.edu.cn

中图分类号: X703
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- 被引次数: 0
出版历程
- 收稿日期: 2022-03-23

Performance and carbon emission of applying CAST embedded with MBBR to retrofit a wastewater treatment plant

ZHANG Lingli^1
,,
GU Dungang^{1
, ,},
LU Jiaqi¹,
ZHANG Nan¹,
LI Guanghui¹,
HU Lijiang^{2, 3},
JIA Hongbai^{2, 3},
WANG Yinyi⁴

1.
School of Chemistry and Chemical Engineering, Shanghai University of Engineering Science
2.
Anji Goachieve Environment Technologies Co., Ltd.
3.
Zhejiang Guoqian Environment and Energy Engineering Research Institute
4.
Anji Jingyuan Wastewater Treatment Co., Ltd.

摘要

摘要:
通过对比分析浙江省某污水处理厂提标改造前后的运行数据，研究移动床生物膜反应器（MBBR）工艺镶嵌循环式活性污泥工艺（CAST）对系统污染物去除效果以及电耗、药耗、物耗对碳排放量的影响。结果表明：MBBR工艺强化了系统的生物脱氮除磷效果，提高了系统的抗冲击负荷能力。改造后污水处理厂出水COD与NH₃-N、TN、TP浓度的全年平均值分别为13.7、0.2、4.3、0.05 mg/L，均能稳定达到浙江省地方标准DB 33/2169—2018《城镇污水处理厂主要水污染物排放标准》要求。改造后污水处理厂内部电耗分布无明显变化，吨水电耗增加19%，而全年消耗的外加碳源、混凝剂、消毒剂均不同程度下降，吨水药剂总用量减少44%。改造后污水处理厂碳排放量由1.04 kg/m³降至0.79 kg/m³，处理过程产生的CH₄和物耗对污水处理厂整体碳排放的贡献较大。
- 原位改造 /
- 移动床生物膜反应器（MBBR） /
- 污染物去除效率 /
- 电耗 /
- 药耗 /
- 碳排放
Abstract:
The effects of applying the cyclic activated sludge technology (CAST) process embedded with moving bed biofilm reactor (MBBR) on pollutant removal, electricity consumption, chemical consumption, and carbon emission were investigated by comparing and analyzing the operational data of a wastewater treatment plant (WWTP) in Zhejiang Province before and after upgrading and retrofit. The results showed that MBBR could strengthen the biological removal of nitrogen and phosphorus and improve the anti-shock loading capacity of the system. After retrofitting, the water quality of the effluent could meet the Zhejiang Provincial Standard for Discharge of Major Water Pollutants for Municipal Wastewater Treatment Plant (DB 33/2169-2018) stably, with the annual average values of COD, NH₃-N, TN and TP being 13.7, 0.2, 4.3 and 0.05 mg/L, respectively. There was no significant change as to the distribution of electricity consumption within the WWTP after retrofitting. The electricity consumption per ton water increased by 19%, while the annual consumption of external carbon source, coagulants and disinfectants decreased by varying degrees, and the total chemical consumption per ton water decreased by 44%. The carbon emission of the WWTP decreased from 1.04 kg/m³ to 0.79 kg/m³ after retrofitting, and the direct methane emission and material consumption in the treatment process contributed greatly to the overall carbon emission of the WWTP.
- in-situ retrofit /
- moving bed biofilm reactor /
- pollutant removal efficiency /
- electricity consumption /
- chemical consumption /
- carbon emission

HTML全文

图 1 污水处理厂工艺流程

Figure 1. Flow chart of treatment process of the wastewater treatment plant

下载: 全尺寸图片幻灯片

图 2 改造前后COD去除效果对比及改造后全年进、出水COD变化

Figure 2. Removal effect of COD before and after retrofitting, and annual change of COD in influent and effluent after retrofitting

下载: 全尺寸图片幻灯片

图 3 改造前后NH₃-N去除效果对比及改造后全年进、出水NH₃-N浓度变化

Figure 3. Removal effect of NH₃-N before and after retrofitting, and annual change of NH₃-N concentration in influent and effluent after retrofitting

下载: 全尺寸图片幻灯片

图 4 改造前后TN去除效果对比及改造后全年进、出水TN浓度变化

Figure 4. Removal effect of TN before and after retrofitting, and annual change of TN concentration in influent and effluent after retrofitting

下载: 全尺寸图片幻灯片

图 5 改造前后TP去除效果对比及改造后全年进、出水TP浓度变化

Figure 5. Removal effect of TP before and after retrofitting, and annual change of TP concentration in influent and effluent after retrofitting

下载: 全尺寸图片幻灯片

图 6 改造后污水处理厂电耗分布

Figure 6. Distribution of electricity consumption of the wastewater treatment plant after retrofitting

下载: 全尺寸图片幻灯片

图 7 改造前后污水处理厂药剂使用量

Figure 7. Chemical consumption of the wastewater treatment plant before and after retrofitting

下载: 全尺寸图片幻灯片

图 8 改造前后污水处理厂吨水碳排放量

Figure 8. Carbon emission per ton water treated of the wastewater treatment plant before and after retrofitting

下载: 全尺寸图片幻灯片

表 1 设计进出水水质

Table 1. Design of influent and effluent quality mg/L　

项目	进水	改造前出水	改造后出水
化学需氧量（COD）	≤450	≤50	≤30
五日生化需氧量（BOD₅）	≤120	≤10	≤6
悬浮物（SS）	≤150	≤10	≤10
氨氮（NH₃-N）	≤15	≤5（8）	≤1.5（3）
总氮（TN）	≤25	≤15	≤10（12）
总磷（TP）	≤1.5	≤0.5	≤0.3
注：括号内数值为每年11月1日—次年3月31日执行。

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