State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China; Advanced Water Management Centre (AWMC), The University of Queensland, QLD, 4072, Australia.
State Environmental Protection Engineering Center for Pollution Treatment and Control in Textile Industry, College of Environmental Science and Engineering, Donghua University, Shanghai, 201620, China.
Chemosphere. 2019 Aug;228:437-443. doi: 10.1016/j.chemosphere.2019.04.173. Epub 2019 Apr 27.
It is a technical barrier to efficiently treat traditional Chinese pharmaceutical (TCP) wastewater, due to its high chemical oxygen demanding (COD) concentration (>5000 mg/L). This study proposed and employed a spiral symmetry stream anaerobic bioreactor (SSSAB) to treat TCP wastewater. Results showed that a pilot-scale SSSAB (150 L) could achieve COD removal efficiency of 94.8% and volumetric removal rate (VRR) of 19.7 ± 0.7 kg COD·(m³·d) under room temperature, which were much higher than operation performance in internal circulation (IC) anaerobic reactor (COD removal efficiency and VRR were 85% and 11.3 ± 0.8 kg COD·(m³·d), respectively). The maximum COD volume removal rate could attain 43.4 kg COD·(m³·d). The characteristics of granular sludge in SSSAB were investigated from both temporal and spatial scales. During the operation period, the anaerobic granular sludge in SSSAB was of higher concentration and superior properties compared to the IC anaerobic reactor. The sludge concentration exhibited a spatially decline trend, decreasing from 61 g L in the bottom to 34 g·Lat the top of the bed, yet the average biomass concentration was still higher than that in IC reactor. According to shock tests with fluctuated real wastewater. the resistance of SSSAB to hydraulic and loading shock was up to 4.3 m h and 42 (kg COD· h) · (m), respectively. The study demonstrated the proposed SSSAB is a promising reactor to treat high-concentration TCP wastewater.
处理传统中药（TCP）废水具有很高的化学需氧量（COD）浓度（>5000mg/L），这是一个技术难题。本研究提出并采用螺旋对称流厌氧生物反应器（SSSAB）处理 TCP 废水。结果表明，在室温下，150L 规模的 SSSAB 可实现 94.8%的 COD 去除效率和 19.7±0.7kg COD·（m³·d）的容积去除率（VRR），远高于内循环（IC）厌氧反应器的运行性能（COD 去除效率和 VRR 分别为 85%和 11.3±0.8kg COD·（m³·d））。最大 COD 体积去除率可达 43.4kg COD·（m³·d）。从时间和空间尺度考察了 SSSAB 中颗粒污泥的特性。在运行期间，SSSAB 中的厌氧颗粒污泥浓度更高，性能优于 IC 厌氧反应器。污泥浓度呈空间下降趋势，从底部的 61g·L 下降到床层顶部的 34g·L，但平均生物量浓度仍高于 IC 反应器。根据波动实际废水的冲击试验，SSSAB 对水力和负荷冲击的阻力分别高达 4.3m·h 和 42（kg COD·h）·（m）。该研究表明，所提出的 SSSAB 是一种很有前途的处理高浓度 TCP 废水的反应器。
