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1.
Municipal solid waste (MSW) is one of the most well-known biomass resources that can be utilized to produce renewable energy. Numerous countries are plagued by the proliferation of waste, particularly organic waste that can be utilized for energy recovery. Palestine suffers from inefficient solid waste management, and only recently have a few projects focused on bioenergy production been implemented. Throughout the years, the city of Tulkarm experiences power outages which cause a challenge to the Palestine Technical University-Kadoorie campus in Tulkarm. Thus, the possibility of energy recovery from the organic portion in Palestine Technical University-Kadoorie was evaluated. The analysis of an economic impact included discussions of a number of economic aspects, including Levelized cost of energy, internal rate of return, present worth, annual worth, and payback period. On the other hand, a carbon dioxide savings analysis and gas emission were evaluated. The outcomes of the energy optimization demonstrated that the suggested system could supply the institution with an average of roughly 7 MWh of electrical energy. According to the economic study, this project offers 0.25 million dollars in present value, 0.144 million dollars in annual value, a 13 percent internal rate of return, a payback period of 6 years, and a levelized cost of energy of 0.11 dollars for each kWh generated. Additionally, the environmental assessment revealed that this system might reduce CO2 emissions by around 8,343,778 tons. For effective waste management, energy recovery, and emission reduction, it is advised to implement anaerobic digestion technology. 相似文献
2.
Puteri Nur Syazwani Mohd Kopli Mimi H. Hassim Umi Aisah Asli Firdaus Abdul Wahab 《环境质量管理》2023,33(1):95-106
Biohythane production via single-stage anaerobic digestion (AD) is an effective way for sustainable energy recovery from lignocellulosic biomass. In this paper, biohythane was produced through the AD process from pineapple peel waste substrate using purely cultured Methanosarcina mazei with the enhancement of palm oil mill effluent (POME) sludge as the inoculum. This study focuses on the effects of the lignocellulosic pre-treatment method, the addition of POME sludge into M. mazei culture medium as inoculum, and various operational conditions (food to microorganisms (F/M) ratios, temperature, pH) on gas production performances. The experimental results indicate that these parameters influenced the efficiency of biohythane production by producing the peak maximum biohythane production rate values (HPRmax) and (MPRmax), H2:CH4 = 1.93:0.67 L/L-d, and biohythane yield (HY) and (MY), H2:CH4 = 1.18:0.55 mL/L-substrate. This study demonstrates that biohythane gas (H2 + CH4 + CO2) production from pineapple waste can be accelerated by M. mazei only with the enhancement of POME sludge through single-stage AD system under mesophilic batch process conditions. 相似文献
3.
田间条件下,淹水稻田由于上覆水中溶解氧的扩散作用,使其表层土壤存在约1 cm厚的微氧层,这个特殊层次中碳氮转化的特征尚未明晰.以亚热带典型稻田土壤为对象,采用100 d室内模拟培养试验,结合13C稳定同位素示踪和磷脂脂肪酸(PLFA)分析技术,研究稻田土壤微氧层(0~1 cm)和还原层(1~5 cm)外源新鲜有机碳(13C-水稻秸秆)和原有土壤有机碳矿化对氮肥施用[(NH4)2SO4]的响应规律及其微生物过程.结果表明,氮素添加使土壤总CO2和13C-CO2累积排放量分别提高11.4%和12.3%;培养结束时,氮素添加下还原层比微氧层土壤总有机碳含量和13C回收率分别降低2.4%和9.2%.培养前期(5 d),氮素添加提高还原层微生物总PLFAs,且细菌和真菌PLFAs响应一致,但对微氧层微生物丰度无显著影响;氮素添加对微氧层和还原层总13C-PLFAs丰度均无显著影响... 相似文献
4.
采用高径比为12.5的序批式反应器(SBR)对冷冻的成熟好氧颗粒污泥(AGS)解冻驯化,研究母体颗粒冻后富集培养及其在番茄废水基质降解中的循环利用。结果表明:冻后恢复活性的污泥第60天全部颗粒化,平均粒径不小于0.45 mm;高通量测序结果显示,相较母体颗粒,该污泥中与颗粒化相关的变形菌门(Proteobacteria)和拟杆菌门(Bacteroidetes)优势菌群富集,微生物丰度呈显著差异(P<0.05);复合菌株对COD、NH3-N和PO3-4-P去除率分别为98.9%、82.1%和82.2%,可实现番茄废水的有效降解。 相似文献
5.
采用完全好氧式膜生物反应器富集耐低温硝化污泥,通过低温冲击强化试验研究硝化污泥的耐低温特性。结果表明,低温对硝化污泥中微生物的群落多样性影响较大,温度越低,微生物多样性越低。低温强化组投加了耐低温高硝化菌含量硝化污泥,使得硝化菌在反应器内生长趋势良好,对低温冲击的恢复更有效果,且低温硝化污泥比中温硝化污泥具有更好的氨氮及亚硝氮去除效果。 相似文献
6.
Xianke Lin Xiaohong Chen Sichang Li Yangmei Chen Zebin Wei Qitang Wu 《Frontiers of Environmental Science & Engineering》2021,15(2):22
7.
冯欣 《环境保护与循环经济》2021,(2):34-36
农村污水治理是改善农村人居环境的重要内容之一,介绍了3种适用于农村水质敏感地区的污水处理技术:间歇曝气活性污泥法、生态处理技术、膜生物法,并对3种污水处理技术的优缺点进行了比较分析。 相似文献
8.
Xiongfeng Hu Haifu Jiang Yanjie Zhang 《Journal of environmental science and health. Part. B》2019,54(6):449-458
Fipronil is a broad-spectrum insecticide that has a good control effect on pests of commercial poultry. Although many studies have reported the environmental fate of fipronil, the influence of residual fipronil in poultry waste on biogas production has not been further explored yet. In this article, an experimental comparative study on anaerobic digestion (AD) of chicken manure (CM) and corn straw (CS) with different fipronil concentrations (FCs) was carried at 8% of total solid (TS) and mid-temperature (35?±?1)°C. The results showed that fipronil had a significant effect on biogas production during AD of CM and CS. When the FC is at a low level (≤10?mg·kg?1), the biogas production rate is increased and the digestion period was shortened, while higher FC (≥ 20?mg·kg?1) showed an inhibitory effect. During the monitoring of enzyme activity, low FC showed no significant effect on cellulase and saccharase, but the urease activity increased in the early stage. High FC showed inhibition of activity of cellulase and urease, but the saccharase activity was significantly inhibited until FC reached 40?mg·kg?1. This study also confirms that the environment in anaerobic digester is favorable for the degradation of fipronil, and its half-life is about 15.83?days. 相似文献
9.
以城市污水处理厂剩余污泥和磷酸生产废渣磷石膏为原料制备多孔陶粒,考察不同配比、烧结温度及烧结时间对多孔陶粒堆积密度、吸水率及盐酸可溶率的影响。结果表明:在污泥与磷石膏混合比1∶4、烧结温度1 050℃、烧结时间15 min的条件下,可制得堆积密度为685.78 kg/m~3、吸水率27.34%、盐酸可溶率11.38%的陶粒,该陶粒内部含有丰富的膨胀气孔,可用作水处理滤料或建材骨料。 相似文献
10.
采用Fenton试剂处理汽车油漆废渣。考察了FeSO_4用量、H_2O_2用量、反应温度、反应时间对处理效果的影响。实验结果表明,在FeSO_4用量为20.5 mg/g、H_2O_2用量为0.6 g/g、反应温度为80 ℃、反应时间为3 h的最优条件下,清漆渣、色漆渣、底漆渣3种漆渣的干基减量率均为20%左右,湿基减量率分别为67.9%、48.2%和64.2%,3种产物的脱水性能均有不同程度的提高,处理后废液的COD均为2 000 mg/L左右。采用Fenton试剂处理后的清漆渣产物粒径与原料相似,产物颗粒球形度高,表面粗糙,内部为多孔结构,产物作为固体燃料时燃烧更充分。Fenton试剂处理未对漆渣中的树脂主体产生较大的破坏。 相似文献