Many potato processors require on-farm washing of potatoes, creating large quantities of wastewater that requires treatment, starting in the fall until the end of the potato storage period in mid-summer. We studied the treatment of wastewater from a potato farm in Ontario, Canada, using a system of pretreatment (sedimentation, aeration) followed by a surface-flow wetland with a dense growth of ...

Characterization and evaluation of a biological submerged filter was carried out on a full-scale pilot plant performing removal of biochemical oxygen demand (BOD) and total nitrogen (TN) from pre-treated urban wastewater. The average influent values of BOD5, chemical oxygen demand (COD) and TN were 370, 1,015 and 60 mg/L, respectively. The pilot plant produced good discharge quality during stea...

Distillery waste disposal is one of the major problems being faced by all nations across the globe. To diminish its organic loading, the distillery waste is treated before its final disposal by biological processes. Microalgae pond gives a way to solve this situation. An evaluation of the performance of a laboratory-scale microalgae pond treating distillery waste previously treated in an anaero...

Water in developing countries worldwide faces growing anthropogenic pressures due to population growth, industrialization, among others. These stressors may cause that water bodies lose their biodiversity and quality every day. In the Cabrero lagoon, Cartagena, a monitoring program has been carried out since 2000 order check of this natural resource, work statistical process control tools were ...

This study examined the relationship between water quality indicators (five-day biochemical oxygen demand (BOD5) and ammonia nitrogen (NH3-N)) by modeling them at sewage treatment plants (STPs) receiving waters. Discharge loads from 2016 to 2018 were input into QUAL-MEV model, which is used for total maximum daily (TMDLs) in Korea, results showed that simulated BOD5 values decreased according r...

Population growth and industrialization have caused serious environmental pollution. Environmental pollution has become global issues beyond a region or a country, and is the introduction of contaminants, which are synthetic chemicals, pesticides, and heavy metals etc, into environmental system. Biopersistent organic chemicals of them particularly cause instability, disorder, harm or discomfort...

We assessed the physico-chemical status of twelve surface water samples from the Birjand flood plain (east of Iran) during fall 2010. The sampling points were selected on the basis of their importance. The physico-chemical parameters such as pH, temperature (T), electrical conductivity (EC), total dissolved solids (TDS), total hardness (TH), calcium (Ca2+), magnesium (Mg2+ ), sodium (Na+), pota...

the activated sludge process simply involves bringing together wastewater and a mixed culture of microorganisms under aerobic conditions. the system usually includes a secondary treatment given to the settled sewage, and requires an environment in which active microorganisms are maintained in intimate contact with wastewater in the presence of sufficient oxygen. in this study, the treatment of ...

Constructed wetlands are a nature-based engineering solution enabling polishing of septic tank effluents at low-cost. However to date, the influence planting on treatment efficiency remains little understood. Here we report case study evaluating performance two near-identical Horizontal Sub-Surface Flow Wetlands (HSSF-CW) deployed school in southern India. The HSSF-CWs were similar size and con...

This study addresses the development of a non-sterile heterotrophic microalgae process, mainly using Scenedesmus sp., for treatment wastewater with high concentration organic matter and biomass production. Urban swine wastewaters were used as source carbon. A C:N ratio 3.4:1 provided maximum 1.22 g/L on day 13 autotrophic conditions. Using same under dark conditions 1.1 was measured 14. Heterot...