MABR对豆制品加工废水的脱氮除碳运行特性

doi:10.19965/j.cnki.iwt.2025-0191

摘要/Abstract

摘要：

水体中氮浓度过高会导致部分水生生物中毒和水体富营养化，膜曝气生物膜反应器（MABR）作为一种新兴高效低耗废水脱氮除碳工艺，已在低浓度废水处理中受到关注。为进一步拓展MABR在高氮废水处理领域的应用，以豆制品加工废水为处理对象，通过分阶段处理其原水、原水经螺旋对称流厌氧反应器（SSSAB）厌氧消化后的出水，以及二者的混合废水，考察MABR的脱氮除碳运行特性。结果表明，采用混合进水，并适当调整厌氧出水和原水比例可取得较好的脱氮除碳效果，当厌氧出水占比为70%时，进水平均C/N为14.36，MABR内COD和总无机氮（TIN）的平均去除率均较高，分别为85.13%和31.33%；当厌氧出水占比为30%时，进水平均C/N为29.41，MABR内COD和TIN的容积去除负荷均较高，分别为2.04 kg/（m³·d）和21.24 g/（m³·d）。

关键词: 膜曝气生物膜反应器, 豆制品加工废水, 螺旋对称流厌氧反应器, 脱氮, 除碳

Abstract:

Excessive nitrogen in water bodies can lead to poisoning of aquatic organisms and eutrophication. The membrane-aerated biofilm reactor (MABR), as an emerging, efficient, and low-consumption wastewater nitrogen and carbon removal process, has garnered attention in treating low-concentration wastewater. To further expand the application of MABR in high-nitrogen wastewater treatment, this study focused on soybean processing wastewater. The raw water, effluent from anaerobic digestion via a spiral symmetric stream anaerobic bioreactor(SSSAB), and the mixed wastewater were treated in stages to examine the nitrogen and carbon removal performance of MABR. Results showed that efficient nitrogen and carbon removal was achieved by using mixed influent and appropriately adjusting the ratio of anaerobic effluent to raw water. When the proportion of anaerobic effluent was 70%, the average influent C/N ratio was 14.36, with the higher COD and total inorganic nitrogen(TIN) removal rates in MABR reaching 85.13% and 31.33%, respectively. When the proportion of anaerobic effluent was 30%, the average influent C/N ratio was 29.41, with the higher COD and TIN volumetric removal loads in MABR reaching 2.04 kg/(m³·d) and 21.24 g/(m³·d), respectively.

Key words: membrane-aerated biofilm reactor, soybean processing wastewater, spiral symmetric stream anaerobic bioreactor, nitrogen removal, carbon removal

中图分类号:

X703

王瑜琪, 康婷婷, 陆慧锋, 孙正, 孙启康, 孙丰浩, 孙天立, 吕迎智, AMANKWAH Williams, 梁宇杰, 赵凯歌, 王锦, 陈小光. MABR对豆制品加工废水的脱氮除碳运行特性[J]. 工业水处理, 2026, 46(2): 78-84.

Yuqi WANG, Tingting KANG, Huifeng LU, Zheng SUN, Qikang SUN, Fenghao SUN, Tianli SUN, Yingzhi LÜ, Williams AMANKWAH, Yujie LIANG, Kaige ZHAO, Jin WANG, Xiaoguang CHEN. Operational characteristics of MABR for nitrogen and carbon removal in soybean processing wastewater[J]. Industrial Water Treatment, 2026, 46(2): 78-84.

https://www.iwt.cn/CN/Y2026/V46/I2/78

图/表 5

表1 豆制品加工废水水质

Table 1 Water quality of soybean processing wastewater

项目

COD/

（mg·L^-1）

NH₄ ⁺-N

（mg·L^-1）

NO₃ ^--N/

（mg·L^-1）

NO₂ ^--N/

（mg·L^-1）

图1 MABR装置及工艺流程示意

Fig.1 Schematic of MABR device and process flow

图2 处理厌氧出水时MABR的运行特性

Fig.2 Operational characteristics of MABR in treating anaerobic effluent

图3 处理混合废水时MABR的运行特性

Fig.3 Operational characteristics of MABR in treating mixed wastewater

图4 处理原水时MABR的运行特性

Fig.4 Operational characteristics of MABR in treating raw wastewater

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