工业产生的冷却水废物(CWW)产生的污染物如果未经处理就排入水体和土壤,将构成环境危害。大多数治疗策略需要能量且昂贵;因此,需要低成本和可持续的治疗替代技术。本研究提出了蓝藻培养作为一种低成本的生物方法来处理冷却水废物(CWW),同时产生碳水化合物。为此,用生活污水(DW)(DW25%-CWW75%,DW50%-CWW50%,DW25%-CWW75%,DW100%,和CWW100%)(v/v)。CWW提供了高含量的无机碳和低含量的N和P,这导致高C/N比促进快速的碳水化合物积累,但生物量产量低。相比之下,DW浓度较高的培养物在14天内获得了相似的结果。用DW25%-CWW75%获得最佳结果,在第8天达到52±18%的碳水化合物含量,第14天的最高生物量浓度为1.7±0.12gL-1。这种文化删除>94%的TAN,N-NO3-和P-PO43-,和84±10.82%的COD。这一战略可能是处理来自同一行业的CWW和DW并生产增值产品和生物能源的有希望的方法。
Contaminants from cooling water waste (CWW) generated by industries represent an environmental hazard if discharged into aquatic bodies and soil without treatment. Most treatment strategies are energy-demanding and costly; hence, low-cost and sustainable treatment alternative technologies are needed. The present study proposed cyanobacteria culture as a low-cost biological method to treat cooling water waste (CWW) while simultaneously producing carbohydrates. For this purpose, CWW from a cooling tower was evaluated in different dilutions with domestic wastewater (DW) (DW25% -CWW75%, DW50% -CWW50%, DW25% -CWW75%, DW100%, and CWW100%) (v/v). The CWW provided a high content of inorganic carbon and low content of N and P, which resulted in a high C/N ratio promoting a fast carbohydrate accumulation but low biomass production. In contrast, cultures with higher DW concentrations achieved similar results in 14 days. The best results were obtained with DW25% -CWW75%, achieving up to 52 ± 18% carbohydrate content on day 8, with the highest biomass concentration of 1.7 ± 0.12 g L-1 on day 14. This culture removed >94% of TAN, N-NO3- and P-PO43-, and 84 ± 10.82% of COD. This strategy could be a promising approach to treating CWW and DW from the same industry and producing value-added products and bioenergy.