基于生物量和矿物相协调来形成新型颗粒污泥的部分亚硝化/厌氧氨氧化-羟基磷灰石工艺的启动。
The startup of the partial nitritation/anammox-hydroxyapatite process based on reconciling biomass and mineral to form the novel granule sludge.
机构信息
Department of Environmental Engineering, School of Energy and Environmental Engineering, University of Science and Technology Beijing, Beijing 100083, PR China.
Department of Civil and Environmental Engineering, Graduate School of Engineering, Tohoku University, 6-6-06 Aramaki Aza Aoba, Aoba-ku, Sendai, Miyagi 980-8579, Japan.
出版信息
Bioresour Technol. 2022 Mar;347:126692. doi: 10.1016/j.biortech.2022.126692. Epub 2022 Jan 10.
The synchronous nitrogen elimination and phosphorus (P) recovery can be realized by the novel one-stage partial nitritation/anammox (PN/A)-hydroxyapatite (HAP) crystallization (PN/A-HAP) process, which seems promising in actual application. This research firstly conducted the startup of the PN/A-HAP process based on reconciling biomass and mineral to cultivate the novel sludge with the strategy of alternating enhancement of biomass accumulation and mineral formation. Within three months, the nitrogen removal rate of 1.1 kg/m/d and the P removal efficiency of 54.2% were achieved. The biomass reached to 3.7 g/L and the average particle size of sludge granules was about 260 μm. The microbial analysis indicated that in sludge the ammonium-oxidizing bacteria (AOB) mainly belonged to the genus Nitrosomonas, and the anammox bacteria mainly the genus Kuenenia. The main mineral in sludge was identified as HAP. This startup strategy is guidable for the application of one-stage PN/A-HAP process in actual wastewater treatment.
新型同步脱氮除磷的一阶段部分亚硝化/厌氧氨氧化-羟基磷灰石结晶（PN/A-HAP）工艺可实现氮磷同步去除，在实际应用中具有广阔的应用前景。本研究首先通过协调生物质和矿物来启动 PN/A-HAP 工艺，采用交替增强生物量积累和矿物形成的策略来培养新型污泥。在三个月内，实现了 1.1kg/m/d 的氮去除率和 54.2%的磷去除效率。生物量达到 3.7g/L，污泥颗粒的平均粒径约为 260μm。微生物分析表明，在污泥中，氨氧化细菌（AOB）主要属于亚硝化单胞菌属，厌氧氨氧化菌（AnAOB）主要属于浮霉菌属。污泥中的主要矿物为羟基磷灰石。这种启动策略可为一阶段 PN/A-HAP 工艺在实际废水处理中的应用提供指导。
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