A comparative study on the water quality of interstitial two creeks in Rivers State was conducted. Temperature, pH, Conductivity, Dissolved oxygen, biochemical oxygen demand, Salinity, and Total dissolved solid were checked with an in-situ hand-held multi-meter (The EZODO Multi-meter). (DO) measured a Milwaukee meter while Biochemical Oxygen Demand (BOD) determined by 5-day BOD test (APHA, 2005...

Aeration is one of the most important factors in biological wastewater treatment process. Through aeration, oxygen is supplied to the bacteria to allow their respiration to proceed rapidly and satisfy the biochemical oxygen demand (BOD). This study was carried out to determine the biological growth in aerated palm oil mill effluent (POME) when subjected to aeration using air of different oxygen...

nowadays, problems and barriers to supply adequate water and also environmental issues have caused wastewater treatment (wwt) to be considered a high priority. in light of high costs of wwt, using natural capacities to reduce pollution could be potentially significant. in this study, the impact of varying temperature and channel roughness have been investigated on the wastewater quality paramet...

Real Wastewater from Kitchen Restaurant (RWKR) contains high concentrations of Biochemical Oxygen Demand (BOD) pollutants to pollute the environment. One processing alternatives reduce BOD is adsorption method using activated carbon coconut shells. This study aims determine shell-activated as an adsorbent for organic matter in RWKR. The begins with making adsorbents that are activators on HCl 3...

A study was conducted to assess the performance of anaerobic-aerobic treatment system of a local potato processing industry. The wastewater treatment plant (WWTP) consisted of primary treatment, upflow anaerobic sludge blanket (UASB), activated sludge process (ASP) and secondary clarifier. The study analyzed the physical, chemical and biochemical parameters of the influent (raw sewage) as well ...

Predicting the adsorption performance to remove organic pollutants from wastewater is an essential environmental-related topic, requiring knowledge of various statistical tools and artificial intelligence techniques. Hence, this study first develop a quadratic regression model neural network (ANN) for predicting biochemical oxygen demand (BOD) removal under different conditions. Nanozero-valent...

養豚汚水処理においては，窒素化合物除去の重要性が増している。窒素除去を円滑に進めるには，生物化学的酸素要求量（BOD）の負荷量原単位の適正化が必要である。そこで，9農場の汚水についてBOD，全窒素（N）およびカリウムイオン（K+）の濃度を調査した。この結果，BOD/N比とBOD/K+比の間には決定係数0.85～0.88の良好な相関関係がみられた。窒素除去に適するとされているBOD/N比3～4の時のBOD/K+比を相関の回帰式により求めると，凝集分離前の汚水で6.39～8.56，高分子凝集剤による凝集分離後の汚水で5.08～6.65となった。これらの比に，尿中カリウム排せつ量原単位として報告されている9.2 g/頭/日を乗ずることで，窒素除去に適するBOD負荷量原単位を分離前汚水で58.8～78.8 g/頭/日，分離後汚水で46.7～61.2 g/頭/日と推定した。

Dewatered alum sludge, a widely generated by-product of drinking water treatment plants using aluminium salts as coagulants was used as main substrate in a pilot on-site constructed wetland system treating agricultural wastewater for 11 months. Treatment performance was evaluated and spreadsheet analysis was used to establish correlations between water quality variables. Results showed that rem...

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...