Growth and interaction mechanism of multi-strain biofouling under different nutrient levels

YANG Qianpeng; CHEN Xiaodong; TIAN Lei; SHI Lin

doi:10.3969/j.issn.0438-1157.2013.03.035

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Growth and interaction mechanism of multi-strain biofouling under different nutrient levels

更新时间：2025-12-10

- Growth and interaction mechanism of multi-strain biofouling under different nutrient levels
- CIESC Journal Issue 3, Pages: 1036-1041(2013)
- 作者机构：
  
  1. 清华大学热能工程系,热科学与动力工程教育部重点实验室,北京,100084
  2. 厦门大学化学化工学院化学工程与生物工程系,福建,厦门,361005
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0438-1157.2013.03.035
  CLC： K01
- Online First：05 March 2013，
  
  Published：05 March 2013
- 稿件说明：
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YANG Qianpeng, CHEN Xiaodong, TIAN Lei, et al. Growth and interaction mechanism of multi-strain biofouling under different nutrient levels[J]. CIESC Journal, 2013, (3): 1036-1041.
DOI：

YANG Qianpeng, CHEN Xiaodong, TIAN Lei, et al. Growth and interaction mechanism of multi-strain biofouling under different nutrient levels[J]. CIESC Journal, 2013, (3): 1036-1041. DOI： 10.3969/j.issn.0438-1157.2013.03.035.

摘要

再生水源热泵能有效回用废热

但再生水换热器的微生物污垢问题一直没有完全解决

严重影响换热效率和系统安全。利用长期监测并且进行16S rRNA鉴定得到的再生水及其污垢中两种主要代表菌属芽孢杆菌属和气单胞菌属

在实验室内配制模拟流体进行混合菌种微生物污垢实验。通过在特制的机理流道上进行不同菌种比例和不同营养物质浓度的污垢生长实验

得出芽孢杆菌属和气单胞菌属的单独生长规律和混合生长规律

总结了混合生长时两种菌属的协同和抑制规律

同时考察了营养物质浓度对生长规律和交互作用的影响。结果表明:芽孢杆菌属成垢能力较强

细胞分裂速度高

耐贫营养能力强;气单胞菌属成垢能力弱于芽孢杆菌属

但分泌物生成速率高

可以与芽孢杆菌属协同生长;两种菌属交互作用在不同阶段和条件下

协同与抑制作用共存并轮流占据主导。

Abstract

Heat pump system is an effective method for heat recovery of a treated sewage source

but biofouling on heat exchanger is still a problem to be solved

and may affect seriously efficiency and security of the system.By long term monitoring and 16S rRNA identification

two major bacteria genus

Bacillus sp. and Aeromonas sp.

were selected for multi-strain biofouling experiment of a model fluid in laboratory.By the experiment of foul growth performed on a purpose made channel at various bacteria ratios and nutrient levels

the regular patterns of single and mixed microbe growth of Bacillus sp. and Aeromonas sp. were revealed

their synergy and inhibition interaction summarized

and the effect of nutrient levels on their growth mechanism and interaction also investigated.The results indicated that the Bacillus sp. has strong ability in biofouling

in high multiple rates

and high tolerance to poor nutrient level.The biofouling of Aeromonas sp. is weak relatively

but high secretion rate that may help for the synergy growth with Bacillus sp.Their synergy and inhibition interactions co-exist and dominate in turn under different growth stage and condition.

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