Treatment of low-strength wastewater using
Treatment of Low-Strength Wastewater Using Immobilized B iomass 273 Brazilian Journal of Chemical Engineering, Vol. 19, No. 03, pp. 267 - 275, July - September 2002 0 2 4 6 8
Anaerobic digestion of low-strength synthetic wastewater (COD of 400 mg L -1 ) in an anaerobic immobilized bio-plate reactor (AnIBPR) at psychrophilic conditions (15°C) (Fig. 6) had a COD removal
Anoxic treatment of low-strength wastewater by immobilized
Low levels of phenol and m-cresol were effectively removed from wastewater under anoxic condition using immobilized sludge. A 138-day experiment was conducted u
However, the use of anaerobic immobilized process for treatment of low-strength wastewaters, as is the main focus of this work, has not been documented. Energy efficiency of treatment processes in domestic wastewater treatment plants and associated carbon footprint offer ample opportunities for improvement [26] .
Anoxic Treatment Systems
2O →N. 2 (gas) • Secondary mechanism is through assimilation (biomass. growth); uptake is limited: 12-14% by biomass weight. • Need aerobic zone to provide nitrification, and an anoxic. (low or zero DO) zone to provide denitrification. • Organic carbon food source (BOD) needed; can use.
CHAPTER 5 ANOXIC AND ANAEROBIC SYSTEMS 5 - 2 switches, and alarms. Effluent from the anoxic reactor is treated in a septic tank for solids removal before being discharged. Performance Expected nitrogen removal to below 10 mg/L total nitrogen. Operation and maintenance Carbon source will need to be replenished periodically.
Wastewater Quality / Strength / and Content
severe soil clogging to the point of hydraulic failure, anoxic soil conditions, and reduced wastewater treatment. The accelerated rate of failures on commercial sites has led researchers to explore the cause of such failures. High concentrations of biochemical oxygen demand (BOD 5), total suspended solids
Moreover, it could be used to treat some wastewater discharged in an intermittent way (Zaiat et al., 2001). Ndon & Dague (1997a, 1997b) and Brito et al. (1997) indicate that the anaerobic sequencing batch reactors are a good alternative of lower-cost treatment of low-strength industrial and municipal wastewater.
TREATMENT OF LOW-STRENGTH WASTEWATER USING IMMOBILIZED
Moreover, it could be used to treat some wastewater discharged in an intermittent way (Zaiat et al., 2001). Ndon & Dague (1997a, 1997b) and Britoet al. (1997) indicate that the anaerobic sequencing batch reactors are a good alternative of lower-cost treatment of low-strength industrial and municipal wastewater.
Start-up of the system. The operation of reactor system was started immediately after inoculation with granular sludge, by feeding the synthetic wastewater at an organic loading rate (OLR) of 3 g of COD liter −1 day −1 and a hydraulic retention time (HRT) of 5.3 h. Each reactor was equipped with an external water circuit in which water of the desired temperature was pumped through the
Low-strength electronic wastewater treatment using
Low-strength electronic wastewater treatment using immobilized cells of TMAH-degrading bacterium followed by activated carbon adsorption Benqin Yang Department of Environmental Engineering and Energy, Myongji University, San 38-2, Nam-Dong, Cheoin-Gu, Yongin, Gyeonggi-Do 449-728, Republic of Korea, Tel. +82 31 330 6690; Fax: +82 31 336 6336
The use of a three-stage step-feed anoxic/oxic (A/O) process for the treatment of raw wastewater resulted in reductions in the concentrations of total nitrogen (TN) and total phosphorus (TP) in
- Why is anionic polyacrylamide chosen?
- Anionic polyacrylamide is chosen because the intramolecular electrostatic repulsion between polymer segments forces the polymer chains to adopt a more extended conformation, increasing the efficiency of bridging flocculation.
- Does cationic polyacrylamide flocculate Phaeodactylum tricornutum?
- However, Nguyen et al., observed high flocculation efficiency of marine microalgae Phaeodactylum tricornutum with a cationic polyacrylamide flocculant (FO3801). The discrepancy in the literature suggested that a future flocculation study using one type of polymer with multiple marine species.
- How is an anionic polyacrylamide flocculant synthesized?
- In this study, an anionic polyacrylamide flocculant was synthesized by ultrasonic initiated template copolymerization (USTP), using sodium allylsulfonate (SAS) and acrylamide (AM) as monomers, poly diallyl dimethyl ammonium chloride (polyDADMAC) as template, and 2,2′-azobis [2- (2-imidazolin-2-yl) propane] dihydrochloride (VA-044) as initiator.
- Does anionic polyacrylamide improve coagulation-flocculation process?
- Aguilar, M. I. et al. Improvement of coagulation-flocculation process using anionic polyacrylamide as coagulant aid. Chemosphere 58, 47–56 (2005). Muller, G., Fenyo, J. C. & Selegny, E. High molecular weight hydrolyzed polyacrylamides.
