Experimental Study on Wastewater Treatment of Expressway Service Area in BAF
The removal effect of main pollutant which was in the wastewater of expressway service area was investigated in the up-flow biological aerated filter (UBAF) with different hydraulic loadings. The result showed that with the increase of hydraulic loading, the removal rates of the chemical oxygen demand (COD) and turbidity decreased. At hydraulic loading of 0.5 m3/(m2&#x2022;h), removal rates of COD and turbidity were 79.6% and 80.2% respectively, which were better than that of 56.5% and 48.7% at hydraulic loading of 1.25 m3/(m2&#x2022;h).
The Domestic Waste Water Treatment of Highway Service Area by Anaerobic Hydrolysis-ICEAS Process
An example of the process design of domestic waste water treatment engineering is described in this paper.The practical results show that the anaerobic hydrolysis-ICEAS process has good nitrogen and phosphorus removal function,which is feasible,effective and advanced.The effluent meets the requirements of discharge standard(GB 8978-1996).
The Use of Submerged Structured Packings in Biofilm Reactors for Wastewater Treatment
Structured packings are utilized as biomass carriers in new types of biofilm reactors. These systems have been tested and characterized for a wide range of applications, e.g. carbonaceous and nitrogenous pollution removal of domestic wastewater, purification of industrial effluents, etc. Their efficiency is discussed in terms of eliminated loads and suspended solids retention, as well as with respect to the factors influencing the costs of operation: head loss, backwash frequency, sludge water production. Design considerations of full scale units include both process-related parameters and technological aspects.