of oxygen volumetric mass transfer coefficients in 0.7 m water depth of linear-type microporous aeration diffuser,C-type and disc-type and S-type are 1.693,1.470,1.438 and 1.227 h~(-1),respectively.Therefore,oxygen performance of linear-type microporous aeration diffuser is the best.Based on ...
Raw wastewater is a potential carrier of pathogenic microorganisms and may pose a health risk when pathogenic microorganisms become aerosolized during aeration. Two different types of wastewater treatment plants were investigated, and the amounts of cultivable bacteria and fungi were measured in the emit...
At the works receiving sewage from an industrial town an average of about 80% of bacteria in settled sewage were removed by treatment in the bio-aeration plant, percolating filters, and humus tanks, and a further 8–10% were removed by subsequent treatment in pressure sand or anthracite ...
Dissolved oxygen in water column (A) and sediment (B) of each treatment 在实验结束时测量植物根际的沉积物溶解氧浓度, 穗花狐尾藻组、黑藻组和空白对照组沉积物溶解氧浓度随深度发生极小的变化, 两种冠层型植物组沉积物溶解氧浓度甚至在2 cm以上深度还略低于对照组(图3B)。刺苦草组沉积物中溶解氧浓度在6 ...
a城镇某生活污水处理厂曝气池的活性污泥 Cities some sanitary sewage treatment plant aeration tank active sludge[translate] aToday Havana dance of many people? 今天许多人哈瓦那舞蹈?[translate] a将从活性污泥中分离筛选出的九种细菌分别投入实验水样,停留5天、8天、12天,与原水水样相比,水体COD、BOD5、总氮...
This usually involves inland artificial ponds of about 20 acres in size and about 6-8ft deep. It is common to see aeration systems connected to the pond to introduce air into the ponds. This enhances the supply of oxygen and also reduces ice formation in the winter season. ...
Some groundwaters have taste and odor problems that require treatment in order for the water to be palatable to the user. Chlorine andozoneare effective in reducing hydrogen sulfide odors, and simple aeration can rid the water of somevolatile organic compounds, such as solvents or petroleum bypro...
Vermiculites that are meant for construction do not perform very well in the garden. Why Add Vermiculite To The Soil: The primary reason we add vermiculite to the soil is that it improves the water holding capacity as well as the aeration of the soil. So it basically improves your soil ...
For example, different soil types show different aeration and water conditions, which can affect the performance of fertilization on soil microbial communities (Bossio et al., 1998; Berg and Smalla, 2009). Müller et al. (2006) indicated that alluvial soils have some unique microorganisms that ...
For each waste, three composting simulations were performed in parallel in three similar reactors (300L), each one under a constant aeration rate. The ... AD Guardia,P Mallard,C Teglia,... - 《Waste Management》 被引量: 130发表: 2010年 Aerobic composting of tobacco industry solid waste—...