... sewage sludge or sewage sludge/ food waste codigestion, sewage sludge will be the important source for hydrogen production due to its amounts Thus, in this work, food waste and sewage sludge were ... concentration of the sludge were 7.6, 2.83 g CaCO3/L, and 5.5 g/L, respectively Substrate The feed was a mixture of food waste and sewage sludge, representing typical Korean food waste and sewage sludge Food ... not be conducted because of low VS concentration of sewage sludge 20 mL of seed sludge and appropriate amounts of food waste and sewage sludge were added in individual bottles Each bottle was supplemented...
... 3,5-DCP in activatedsludge was determined supernatant by centrifugation (8,000 rpm, 20 minutes) The adsorption Activatedsludge with PAC was separated from From 100 to 200 mg of the sludge were ... return of activatedsludge from the sedimentation tank The aeration and sedimentation tanks had working volumes of 2.5 L and 0.2 L, respectively Higashi-Hiroshima, Japan The activatedsludge was ... adsorption capacity of the PAC in the aeration tank include that of activated sludge, the biosorption of 3,5-DCP by activatedsludge was negligible mg g-1, respectively The K values of new PAC...
... fluxes at extremely low cross -flow velocities and transmembrane pressure, which would extremely reduce energy requirement This technology integrated with an activatedsludge process, has not been ... parameters were also investigated PERMEATE COMPRESSED AIR INFLUENT AIR SLUDGE WASTE Fig Schematic Diagram of the Coupling of ActivatedSludge Process and Membrane Separation MATERIALS AND METHODS Wastewater ... set the time and interval of backflushing Acclimatization and Reactor Operation The sludge from activatedsludge process was acclimatized by the textile wastewater in an aerobic batch tank without...
... flocculants from natural activated sludge, which is a complex microbial system A strong flocculant from natural activatedsludge might economically provide an effective use of excess sludge In a previous ... method for bioflocculants from the microbial cell surface Materials and Methods Activatedsludge samples Activatedsludge samples were collected from an aeration tank of the Obihiro-South local ... in the floc formation of activatedsludge and the adsorption of pollutants on the floc surface Tezuka (1969) reported that the Flavobacterium sp dominant in activatedsludge flocculated when calcium...
... polymer closely related to flocculation of activatedsludge would be useful as a flocculating agent Materials and Methods Activatedsludge samples Activatedsludge samples were collected from the ... effective use of excess sludge The present study was conducted to obtain a bioflocculant from natural activatedsludge An extracellular polymer was extracted from an activatedsludge suspension and ... mentioned, flocculants obtained from natural activatedsludge have not been well investigated If a strong flocculant could be obtained from natural activated sludge, it would be economical and it might...
... METHODS Activatedsludge samples For quantification, activatedsludge samples were collected from laboratory-scale EBPR process and full-scale wastewater treatment plants 20 activatedsludge samples ... full-scale activatedsludge by the quantitative PCR method and by the FISH method, and their correlation The results from laboratory-scale activatedsludge are shown as “●” The results of full-scale activated ... various bacteria in activatedsludge (Vervaeren et al., 2005; Boon et al., 2003) This technique is a fast and efficient tool to quantify population abundance in activatedsludge Nevertheless,...
... these studied reactors MATERIALS AND METHODS Activatedsludge reactors Activatedsludge was collected from the reactors as shown in Table The activatedsludge reactors were operated at Beijing University ... MUCT, SBR-1 and SBR-2 Figure - Carbon flow model in a continuous activatedsludge process RESULTS AND DISCUSSION The concentration of PHA found in the activatedsludge reactors As shown in Figure ... per procedures stated by Takabatake et al (2002) Ten milliliter of activated- sludge- mixed liquor collected from the activatedsludge reactor was lyophilized After the addition of 2mL of chloroform...
... the same way They were then subjected to the MAR-FISH analysis Batch experiment with activatedsludgeActivatedsludge samples were obtained from a full-scale wastewater treatment plant in October ... was conducted in triplicate As control, activatedsludge mixed liquor treated at 70oC for 10 was also incubated with the same substrate The activatedsludge was collected after the incubation, ... microorganisms in activatedsludge Appl Environ Microbiol., 63, 3662-3668 Bond, P L.; Keller, J; Blackall, L L.(1998) Characterization of enhanced biological phosphorus removal activated sludges with...
... out for habituation of the activatedsludge Batch operation of the activatedsludge process was conducted with L conical reactor at 20°C The MLSS of the activatedsludge was adjusted to 1,500 ... mRNA MATERIALS AND METHODS Batch operation of the activatedsludge process with coagulant addition Actual domestic wastewater and activatedsludge were collected from a wastewater treatment plant ... ratio of the test was set at (Run 1) and (Run 2) Activatedsludge without any coagulant added was used as a control During 600 of operation, activatedsludge was collected The parameters NH4+-N, NO2...
... listed in Table 2.3 Seed sludge The sludge used for the present experiment was collected from the anaerobic pond, due to its contents of anaerobic microbial life [8] On these, sludge was obtained ... process[15] There was slow growth of the sludge beds in each reactor However, the sludge bed presented an improvement in both reactors with only 57 days The evolution of sludge bed particles was illustrated ... was also removed The estimated concentration of the provided sludge was 106 g/l COD, and 173 g/l TS 2.4 Start-up period The first feed flow rate was regulated at 1.85kg.m-3.day-1 Besides, a hydraulic...
... dewatering of activatedsludge is improved more than that of synthetic sludge after calcium concentration addition 60 50 CST(s) 40 Synthetic sludge 30 Synthetic sludge w ith cellulose Activatedsludge ... better improvement of sludge conditioning, as indicated in Fig 60 50 Ca 2.5mM synthetic sludge CST (s) 40 Ca 5mM synthetic sludge 30 Ca 2.5mM activatedsludge 20 Ca 5mM activatedsludge 10 0 10 12 ... and activatedsludge However, the sludge conditioning of activatedsludge showed a greater improvement than that of synthetic sludge Although the solid content was similar in both types of sludges,...
... đến thiết bị phản ứng đẩy lý tưởng nghĩa khối phản ứng vận chuyển ống theo kiểu piston (piston flow) phản ứng hóa học xảy nghĩa gradient vận tốc dòng theo hướng kính, không tồn khuấy trộn theo ... làm việc lý tưởng (Continuously Operated Ideal Tank Reactor, Ideal Stirred Tank Reactor, Mixed Flow Reactor) Quá trình phân bố thực thiết bị kiểu ống với chiều dài lớn đường kính Hỗn hợp ban...
... type of macrophytes Subsurface flow constructed wetlands (SSF CWs) have two typical types: horizontal flow subsurface flow (HF-SSF) CWs; vertical flow subsurface flow (VFSSF) CWs, besides two ... vertical flow 13 Horizontal flow (HF) Figure 1-2 shows schematic cross section of a horizontal flow constructed wetland It is called HF wetland because the wastewater is fed in at the inlet and flow ... velocity, and presence of the plant stalks and litter regulate water flow and, especially in long, narrow channels, ensure plug- flow conditions (Reed et al., 1988) One of their primary design purposes...
... existing activatedsludge tank using SHFMP 144 6.4 Concluding Remarks 146 Chapter 147 Coupling the Submerged Hollow Fiber Membrane Photobioreactor to ActivatedSludge Wastewater ... could be built close to or on top of an activatedsludge tank whenever land area is insufficient Hollow fiber membranes were directly submerged in the activatedsludge tank and the microalgal culture ... after one – week incubation at 30oC 180 xiv LIST OF ABBREVIATIONS AS AS-SHFMP ActivatedSludgeActivated Sludge- Submerged Hollow Fiber Membrane Photobioreactor BBM Bold's Basal Medium BNR...
... residence time t sludge = MLSS *V SS e * Qe + SS w * Qw Aeration Tank SSe= suspended solids in the effluent SSw= suspended solids in waste sludge Qe = effluent flow rate Qw= sludgeflow rate Qw, ... Example Consider the following activatedsludge system Calculate: The aeration period BOD loading F/M ratio SS and BOD removal efficiency tsludge Return activatedsludge rate What is the required ... Considerations Activatedsludge process is defined by: Aeration period = detention time= 3-30 hrs BOD loading = (BOD entering per day)/ (V=volume of aeration tank) F/M= (Q*BODin)/(V*MLSS) Sludge age...
... Vertical sectional view 4.7cm 13cm 20cm Sludge settling zone 25cm 5cm Effective volume: 7.5L Gas flow Liquid flowSludge settling zone Effluent discharge (Continuous flow mode) Effluent discharge (Sequencing ... aerobic granular sludge in a continuous experiment In addition, the effect of feeding pattern, i.e continuous flow and sequencing batch flow modes, on the formation of aerobic granular sludge was investigated ... to successful formation of aerobic granular sludge in an SBR (Li and Li, 2009) Sludge settling time is known as an important factor influencing the sludge selection in an SBR (McSwain et al.,...