Li Jun, Wang Lin, Lu Qian, Zhou Wenguang
School of Resources, Environmental & Chemical Engineering, Key Laboratory of Poyang Lake Environment and Resource Utilization, Ministry of Education, Nanchang University Nanchang 330031 China
RSC Adv. 2019 Nov 22;9(65):38235-38245. doi: 10.1039/c9ra03454d. eCollection 2019 Nov 19.
Aiming at promoting microalgae-based anaerobically digested swine manure (AD-SM) treatment, this work evaluated the feasibility of removing turbidity and ammonia in swine manure by cationic starch addition and air bubbling-driven ammonia stripping. It was observed that turbidity and ammonia toxicity were two main factors limiting algae growth. Addition of cationic starch effectively reduced turbidity of AD-SM by 77.10% in 40 min. 6 L min air flow rate and 5 h stripping time were regarded as good conditions for ammonia stripping. An economic analysis was conducted to assess the feasibility of this pretreatment strategy in a pilot scale system and results indicated that unit energy input and freshwater consumption were 0.036 kW h g dry biomass and 0.76 L g dry biomass, respectively, much lower than those of a high dilution strategy. So it is a more promising and feasible way to pretreat AD-SM with low dilution by turbidity removal and ammonia stripping.
为了促进基于微藻的厌氧消化猪粪（AD-SM）处理，本研究评估了通过添加阳离子淀粉和鼓泡驱氨法去除猪粪中浊度和氨的可行性。研究发现，浊度和氨毒性是限制藻类生长的两个主要因素。添加阳离子淀粉在40分钟内有效降低了AD-SM浊度的77.10%。6 L min的空气流速和5小时的吹脱时间被认为是氨吹脱的良好条件。进行了经济分析以评估该预处理策略在中试规模系统中的可行性，结果表明单位能量输入和淡水消耗量分别为0.036 kW h g干生物量和0.76 L g干生物量，远低于高稀释策略。因此，通过去除浊度和氨吹脱进行低稀释预处理AD-SM是一种更具前景和可行性的方法。
