Zhou Jian, Huang Yong, Liu Xin, Yuan Yi, Wangyan De-qing, Ding Liang, Shao Jing-wei, Zhao Rong
Huan Jing Ke Xue. 2016 Mar 15;37(3):1061-9.
A novel element sulfur autotrophic denitrification combined anaerobic ammonia oxidation process, reacted in CSTR, was used to investigate the sulfate production and alkalinity consumption during the whole process. The element sulfur dosage was 50 g · L⁻¹. The inoculation volume of ANAMMOX granular sludge was 100 g · L⁻¹. The agitation rate and environment reaction temperature of the CSTR were set to 120 r · min⁻¹ and 35°C ± 0.5°C, respectively. The pH of influent was maintained in range of 8. 0-8. 4. During the start-up stage of sulfur based autotrophic denitrification, the nitrogen removal loading rate could reach 0.56-0.71 kg · (m³ · d) ⁻¹ in the condition of 5.3 h hydrogen retention time and 200 mg · L⁻¹ nitrate nitrogen. After the addition of 60 mg · L⁻¹ ammonia nitrogen, Δn(SO₄²⁻):Δn(NO₃⁻) decreased from 1.21 ± 0.06 to 1.01 ± 0.10, Δ(IC): Δ(NO₃⁻-N) decreased from 0.72 ± 0.1 to 0.51 ± 0.11, and the effluent pH increased from 6.5 to 7.2. During the combined stage, the ammonia concentration of effluent was 10.1-19.2 mg · L⁻¹, and the nitrate-nitrogen removal loading rate could be maintained in range of 0.66-0.88 kg · (m³ · d)⁻¹. The Δn (NH₄⁺): Δn (NO₃⁻) ratio reached 0.43, and the NO₃⁻ removal rate was increased by 60% in the simultaneous ammonia and nitrate removal reaction under the condition of G(T) = 22-64 s⁻¹ and pH = 8.08, while improper conditions reduced the efficiency of simultaneous reaction.
一种新型的元素硫自养反硝化联合厌氧氨氧化工艺，在连续搅拌釜式反应器（CSTR）中进行反应，用于研究整个过程中的硫酸盐产生和碱度消耗。元素硫投加量为50 g·L⁻¹。厌氧氨氧化颗粒污泥接种量为100 g·L⁻¹。CSTR的搅拌速率和环境反应温度分别设定为120 r·min⁻¹和35°C±0.5°C。进水pH维持在8.0 - 8.4范围内。在基于硫的自养反硝化启动阶段，在5.3 h的氢气停留时间和200 mg·L⁻¹硝酸盐氮的条件下，氮去除负荷率可达0.56 - 0.71 kg·(m³·d)⁻¹。添加60 mg·L⁻¹氨氮后，Δn(SO₄²⁻):Δn(NO₃⁻)从1.21±0.06降至1.01±0.10，Δ(IC):Δ(NO₃⁻-N)从0.72±0.1降至0.51±0.11，且出水pH从6.5升至7.2。在联合阶段，出水氨浓度为10.1 - 19.2 mg·L⁻¹，硝酸盐氮去除负荷率可维持在0.66 - 0.88 kg·(m³·d)⁻¹范围内。Δn(NH₄⁺):Δn(NO₃⁻)比值达到0.43，在G(T)=22 - 64 s⁻¹和pH = 8.08的条件下，同时去除氨和硝酸盐的反应中，NO₃⁻去除率提高了60%，而不合适的条件会降低同时反应的效率。
