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Cholerny Spammer
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 Posted: Sat 18:34, 29 Jan 2011 Post subject: timberland shoes Urban Area Work _1584 garbage dis |
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Urban Area Work of Domestic Waste
The amount of sludge compost is extremely rich in nitrogen and phosphorus contained in available nutrients,[link widoczny dla zalogowanych], can be directly used as basal fertilizer and top dressing with green seedlings, but if applied in excess, can lead to soaring green seedlings, the excess N, P leaching losses will be with the pollution of surface rainfall water and groundwater, causing eutrophication. Therefore, Japan made the decision to N application rate of municipal sludge j. Under normal circumstances,[link widoczny dla zalogowanych], the annual application rate of soil nitrogen as nitrogen 180kg/hm, sludge compost N, 50% efficient if calculated, calculate the port of sewage sludge composting sludge determined by the N application rate to 32 years .77t/hm, Table 6. Table 6N decision sludge compost application rate of 3 conclusions and recommendations of this project in Tianjin Dagang District sewage treatment plant sludge as the research object, the use of anaerobic fermentation _T arts, focusing on excess sludge composting process temperature, moisture content, pH,[link widoczny dla zalogowanych], organic matter,[link widoczny dla zalogowanych], total nitrogen, total phosphorus,[link widoczny dla zalogowanych], total potassium and other parameters change, through testing, the indicators in line with urban wastes for agricultural control standards. Currently the sludge heavy metal content of urban green space for no specific requirements, and the sewage treatment plant effluent port entirely from domestic sewage, it does not make a study of heavy metals. Under the control of urban wastes for agricultural standards, facultative anaerobic sludge can be used green space. Higher organic matter content of which is a good fertilizer. Pollution by nitrogen fertilizer application rate decisions as 32.77t/hm. Large volume of compost heap outside a proposal from the insulating effect of thin soil, you can also insert some bamboo rake, and more conducive to the composting process produces the CH, CO and water vapor emptying.
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