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Programs in Canada that assess the effects of wastewater discharges on organisms, such as Environmental Effects Monitoring (EEM), primarily focus on fish populations and benthic invertebrate communities. Although these methods are widely accepted, there are many situations where fish monitoring is difficult and benthic community data is difficult to interpret; in these instances alternative approaches...
Using wastewater as irrigation water presents arising tendency in China, however, little is known about the potential ecological impacts of the practice. Samples, such as soil and plants, were collected from the Panjin Shuangtaiestuarine wetland and used in the experiments to assess the effects of the soil microbial community added nitrogen. Supplemental nitrogen was added as NH4Cl to three treatments...
According to our previous study, it is believed that ultrafiltration with polyethersulfone (PES) flat-sheet membrane is suitable for the concentration process of alkaline peroxide mechanical pulping (APMP) plant's effluent. So we scaled up the concentrating experiment to a pilot-scale. Specifically, the cross flow velocity and volume reduction factor were optimized again for a higher flux and a lower...
This paper is focusing on the investigation of a novel anoxic-oxic hybrid membrane bioreactor (A/O HMBR) for the treatment of landfill leachate. This new technique combined an efficient anoxic and oxic biological treatment process with a membrane filtration unit and has the advantages of simplifying pre-treatment facilities, relieving the loading of the subsequent treatment processes and optimizing...
Conventional drinking water treatment plant consists of coagulation, flocculation, sedimentation, and filtration and disinfection units. Depending on water quality influent, each unit can be optimized to achieve the desired water quality effluent, both in design and operation stages. A typical water treatment plant has the combination of processes needed to treat the contaminants in the source water...
In order to improve the quality of the river water, raise constructed rapid infiltration(CRI) system was constructed. Practice shows that the location and layout of this ecological engineering conform to the source of pollution, and the system is a new technology which combines natural, social and economic systems in one. In effluent of CRI, the removal rates of CODcr, NH3-N, TN, BOD5, SS and TP are...
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