Ứng dụng chế phẩm vi sinh vật chịu mặn để xử lý ô nhiễm nền đáy tại Âu Thuyền Thọ Quang, Đà Nẵng - Đỗ Văn MạnhQuá trình thử nghiệm cho thấy, các chủng vi sinh vật được phân lập và tuyển chọn từ bùn và nước của Âu thuyền Thọ Quang có khả năng sinh trưởng và phát triển tốt sau khi đưa trở lại môi trường của nó ở điều kiện phòng thí nghiệm. Kết quả cho thấy những chủng VSV này có khả năng thích ứng và hoạt động mạnh trong môi trường có chứa các thành ...
8 trang | Chia sẻ: honghp95 | Ngày: 30/11/2020 | Lượt xem: 815 | Lượt tải: 0
Analysis of waste flows using wio tableThis paper derived the associated 2016 static IO model and applies it to analyze the WW, DISW and HW from the industry sectors to the waste treatment sectors and the CO2 effluents from the waste treatment sectors. As resulted, CO2 emissions from WW, DISW and HW treatment sectors in 2016 is 1,179,024 thousand tons, 14,077 thousand tons and 557 th...
6 trang | Chia sẻ: honghp95 | Ngày: 30/11/2020 | Lượt xem: 771 | Lượt tải: 0
Biomethane potential (bmp) of arrowroot powder processing waste and effect of alkaline pre-TreatmentThe ultimate BMP of untreated arrowroot waste was 253 NmLCH4/gVS showing that the waste has a moderate biodegradability. Pre-treatment by NaOH (from 3 to 9 wt.%) resulted in 1.8 % - 21.5 % more methane yields and the highest yield of 314 NmLCH4/gVS was achieved at NaOH dose of 7 %. Thus, it is a possible pre-treatment method for enhancing anaero...
7 trang | Chia sẻ: honghp95 | Ngày: 30/11/2020 | Lượt xem: 869 | Lượt tải: 0
Selection of suitable plant species for wastewater treatment by constructed wetland at the formosa Ha Tinh steel companyPhragmites australis (Cav.), Typha angustifolia L. and Cyperus tegetiformis could be tolerant with the treated wastewater from the steel industry company FHS. The CW system has substantially improved the wastewater quality, where the highest removal efficiencies were achieved in the cell with Phragmites australis (Cav.) and Typha angustifolia L....
7 trang | Chia sẻ: honghp95 | Ngày: 30/11/2020 | Lượt xem: 873 | Lượt tải: 0
Levels of selected indoor air pollutants in three Ha Noi offices - Bich Thuy LyLevels of indoor PM10 in several offices in Ha Noi were observed with the concentrations in the wet season and dry season being 3.5-25.1 (mean = 13.3) µg/m3 and 3.7-24.7 (mean = 11.2) µg/m3, respectively. The indoor PM10 concentrations were lower than daily level of WHO guidelines of 50 µg/m3. Variations of PM10 concentration with different fact...
9 trang | Chia sẻ: honghp95 | Ngày: 30/11/2020 | Lượt xem: 826 | Lượt tải: 0
Co-Degestion of food waste and domestic wastewater by using upflow anaerobic sludge blanket (uasb) couped with a microfiltration membrane (mf)Co-digestion of domestic wastewater and food waste by AnMBR technology was found to be feasible in tCOD, TSS removal and improved biogas recovery efficiency. The results indicated that tCOD, TSS removal efficiencies reached nearly 90 % for tCOD and more than 90 % for TSS due to presence of membrane module. The tCOD, TSS removal efficiencies did ...
8 trang | Chia sẻ: honghp95 | Ngày: 30/11/2020 | Lượt xem: 1022 | Lượt tải: 0
Application of machine learning to fill in the missing monitoring data of air qualityThree machine learning models were used to predict the missing values of monitoring data of air quality for Gia Lam, Hanoi and Nha Trang, Khanh Hoa stations. Extensive experimental results indicated that the effectiveness of the three studied machine learning models, namely ARMA, ANN and SVR is better than that of traditional approaches such as ...
7 trang | Chia sẻ: honghp95 | Ngày: 30/11/2020 | Lượt xem: 1020 | Lượt tải: 0
Human health risk implication from cadmium and lead contamination at lead-Zinc mine area, northern Viet NamSoils and plants around Cho Dien lead/zinc mine area have been contaminated by mining activities. Elevated concentrations of Cd and Pb were also found in surface soils near the mining site, with mean values of 24.5 and 13,423 mg/kg, respectively. Soils from uncultivated and cultivated sites contained higher lead and cadmium concentrations than Q...
8 trang | Chia sẻ: honghp95 | Ngày: 30/11/2020 | Lượt xem: 763 | Lượt tải: 0
The study on optimization of copper leaching from waste pcbs by using response surface methodologyThe present study has successfully built the model, by response surface methodology, using Design Expert software, which is compatible with the experimental data, provided a high correlation coefficient (R2). The optimal conditions were identified as Fe2(SO4)3 concentration of 0.35 M, volume of H2O2 addition at 10 ml and leaching time of 10 h. L...
7 trang | Chia sẻ: honghp95 | Ngày: 30/11/2020 | Lượt xem: 931 | Lượt tải: 0
Calculation of environmental properties for organic compounds using quantitative structuresolubility relationshipsThis study has successfully constructed QSSR linear models with the support of genetic algorithms. This technique can allow to construct the linear regression models for large data sets. The genetic algorithm allows to select the important parameter in model. The QSSR linear models is obtained to satisfy the evaluated statistics. In addition, th...
8 trang | Chia sẻ: honghp95 | Ngày: 30/11/2020 | Lượt xem: 826 | Lượt tải: 0
