Efficiency of wood-chip-framework soil infiltration system in treating anaerobically digested swine wastewater

ZHAO Bowei; LI Jianzheng; DENG Kaiwen; MENG Jia

doi:10.11949/j.issn.0438-1157.20150111

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Efficiency of wood-chip-framework soil infiltration system in treating anaerobically digested swine wastewater

更新时间：2025-12-10

- Efficiency of wood-chip-framework soil infiltration system in treating anaerobically digested swine wastewater
- CIESC Journal Issue 6, Pages: 2248-2255(2015)
- 作者机构：
  
  哈尔滨工业大学城市水资源与水环境国家重点实验室,黑龙江,哈尔滨,150090
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20150111
  CLC： 703.1
- Online First：16 March 2015，
  
  Published：16 March 2015
- 稿件说明：
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ZHAO Bowei, LI Jianzheng, DENG Kaiwen, et al. Efficiency of wood-chip-framework soil infiltration system in treating anaerobically digested swine wastewater[J]. CIESC Journal, 2015, (6): 2248-2255.
DOI：

ZHAO Bowei, LI Jianzheng, DENG Kaiwen, et al. Efficiency of wood-chip-framework soil infiltration system in treating anaerobically digested swine wastewater[J]. CIESC Journal, 2015, (6): 2248-2255. DOI： 10.11949/j.issn.0438-1157.20150111.

摘要

为处理高氨氮、低C/N比的养猪废水厌氧消化液

构建了具有缓释碳源特性的木质框架土壤渗滤系统(WFSI)

并通过运行测试了进水浓度和表面水力负荷(SHL)对系统处理效能的影响。在SHL为0.2 m3·m-2·d-1条件下

当进水COD和NH4+-N平均浓度分别从152和175.5 mg·L-1提高到421和788.7 mg·L-1时

系统对COD的去除率从52.3%提高到61.2%

NH4+-N去除率从84.2%下降到61.5%

TN去除率从28.6%提高到了33.5%

NH4+-N和TN去除负荷分别达到了75.5和41.7 g·m-3·d-1。当SHL提高为0.32 m3·m-2·d-1时

系统仍能维持运行

但处理效能受到显著影响。在进水COD 和NH4+-N分别为265和465 mg·L-1左右时

COD、NH4+-N及TN的去除率分别平均为56.5%、53.3%和20.9%。木质填料及其附着层形成的NH4+-N浓度梯度

可使系统承受较高的SHL的同时获得缓释碳源

并保护氨氧化细菌免受自由氨毒性。

Abstract

A wood-chip-framework soil infiltrator (WFSI) with slow-release of carbon source was constructed and used to treat an anaerobically digested swine wastewater characterized with high NH4+-N and low C/N ratio. Pollutant removal efficiency of the WFSI was investigated under various influent concentration and varying surface hydraulic load (SHL). Under SHL of 0.2 m3·m-2·d-1

influent averaged COD and NH4+-N increased from 152 and 175.5 mg·L-1 to 421 and 788.7 mg·L-1

respectively. The resultant COD

NH4+-N and TN removal by the system was 52.3% to 61.2%

84.2% to 61.5% and 28.6% to 33.5%

respectively. Meanwhile

NH4+-N and TN removal loading reached 75.5 and 41.7 g·m-3·d-1

respectively. Though SHL was as high as 0.32 m3·m-2·d-1

the system still performed but its efficiency was remarkably influenced. When influent COD and NH4+-N was around 265 and 465 mg·L-1

COD

NH4+-N and TN removal was about 56.5%

53.3% and 20.9%

respectively. The wood carrier observably worked as a slow-release carbon source

and protected the ammonia oxidizing bacteria from free ammonia toxicity due to the concentration gradient of NH4+-N in the adhesive layers.

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