aerobic process in wastewater treatment pdf

... Technology She received her B.S in Industrial Engineering from North Carolina State University, Master of Engineering in Mechanical Engineering and Master of Business Administration from the University ... Pollution of receiving water courses following upset of wastewater treatment process by industrial discharges Adequate pretreatment of industrial wastewater; efficient monitoring and enforcement ... during the wastewater treatment are mechanical mixing, chemical dosing, media and membrane filtration, dissolved air floatation, sludge handling and disposal, and digester heating Wastewater treatment

Ngày tải lên: 05/09/2013, 15:28

... the operating line can be constructed on the equilibrium curve (Figure 10) The operating line is the straight line of slope L/G, joining the terminal conditions v, Y Figure 10 Operating diagram ... difficulties included obtaining uniform flow of solid particles and fluid without channelling or local irregularities, as well as those of intro- ducing and removing the solid continuously into the ... on-line operation for the treatment of textile effluent and has two sets of three adsorption columns in series While one set of columns is in operation for the effluent treatment, the remaining

Ngày tải lên: 25/08/2016, 19:14

... tubes for containing the medium Firstly, preparing 300mL of DI water Trang 23contained in the tube, put it in the shaking machine for mixing the medium Secondly, preparing the following constituents: ... is continuous, it works best when the nutrients are in motion or flowing, such as in trickling filters, digestion chambers or experimental BOD… Aerobic Treatment ( Biological Wastewater Treatment): ... been gaining more attention from the engineers and Trang 16scientists, it is possibly that the source-separated urine will maintain to be the good choice for their application in wastewater treatment

Ngày tải lên: 11/04/2021, 07:41

... Trang 7Figure 2 The Process of wastewater treatment in Di An plant Wastewater from drainage households in Di An city follows the main pipeline flowing to the pumping station Then, wastewater is led ... emissions into the surrounding environment, increasing H2S, poisoning, causing environmental pollution The defective exhaust fan system The processing system does not function well, reducing the processing ... The data were collected from monitoring data and surveying at Di An wastewater treatment plant in 2020 Parameters were used in this study including pH, chrominance, TSS, COD, BOD5, NH4+, NO3-,

Ngày tải lên: 28/06/2021, 08:58

... is prepared in three main steps: raw material treatment (alkylation and bleaching to remove lignin in fibers), the sol-gel process including dispersing cellulose into solution (forming sol system), ... from pineapple leaves; (d) Pineapple fiber 10 Figure 2.3 (a) Putting the pineapple leaves into the stripping machine, (b) harvesting the bundles from the stripping machine and (c) the pineapple ... also used in the aerospace industry as an adsorbent Because their features have enabled aerogel in becoming a promising material in numerous fields of application including building insulation,

Ngày tải lên: 10/04/2023, 22:18

... is prepared in three main steps: raw material treatment (alkylation and bleaching to remove lignin in fibers), the sol- gel process including dispersing cellulose into solution (forming sol system), ... pollutants comprising soluble dyes and insoluble oils are the main contaminants in wastewater [1,2] The amount of these pollutants has been significantly increasing due to an increase in industrial ... also used in the aerospace industry as an adsorbent Because their features have enabled aerogel in becoming a promising material in numerous fields of application including building insulation,

Ngày tải lên: 31/07/2024, 09:16

... issued by EPA in 2009, the zinc content in WWTPs (84 in total) biosolids was 8.55 g/kg-SS (US EPA, 2009) Investigations in China in 2011 (139 WWTPs in total) and in 2009 (107 WWTPs in total) showed ... study the changes in bacteria community structure due to long-term exposure of ZnO-NPs in order to gain more insight into the microbial-NPs interaction in wastewater treatment process Trang 206 ... of ZnO-NPs during wastewater treatment process in real treatment plants is still largely uncertain and literature is mostly limited to studies on simulated wastewater treatment processes Zheng

Ngày tải lên: 10/11/2015, 11:07

... are compelling industries to adopt recycling technologies, focusing on reducing potable water intake and minimizing polluted effluent discharge Wastewater reuse is gaining importance in water resource ... during bottling, filtration processes, and rainwater captured in the wastewater management system.Each winery generates a unique volume of wastewater influenced by various factors, including ... coagulation.The dairy industry has a significant demand for water, which is utilized in various processes including sanitization, heating, cooling, milk processing, packaging, and cleaning of milk tankers

Ngày tải lên: 13/06/2023, 13:23

... sustainability, or of threats to sustainability In order to do this, proper sustainability criteria/indicators must provide this information, to indicate our progress in achieving sustainability ... 2002) In analyzing the sustainability of sanitation technologies in general and wastewater treatment technologies in particular, the different dimensions of sustainability should be taken into ... sanitation planners in searching for and identifying the most sustainable technical solution for wastewater treatment system in a local context through a two-step screening process (Fig 2) This

Ngày tải lên: 05/09/2013, 10:15

... explanation without intent to infringe. Library of Congress Cataloging-in-Publication Data Wastewater purification : aerobic granulation in sequencing batch reactors / editor, Yu Liu. p cm. Includes bibliographical ... of the minimal settling velocity that ultimately determines aerobic granulation in SBR This selection pressure theory offers useful guides for up-scaling, manipulating, and optimizing aerobic ... mechanism of aerobic granulation in sequencing batch reactor (SBR) and its application in treating a wide variety of municipal and industrial wastewater Obviously, the basic research of aerobic granulation

Ngày tải lên: 18/06/2014, 16:20

... different selection pressures in terms of minimum settling velocity of 0.6 and 0.7 m h–1 Even such a marginal difference in the minimum settling velocity could also result in distinct morphologies of ... essential role in aerobic granulation, and a high SBR volume exchange ratio facilitates rapid and successful aerobic granulation in SBR As presented in the preceding chapters, aerobic granules ... degree of aerobic granulation in an SBR is determined by (V s)min It appears from figure 5.12 that at a (V s)minless than 4 m h–1, only a partial aerobic granulation can be achieved in SBR, and

Ngày tải lên: 18/06/2014, 16:20

... a minimum settling Trang 10velocity, (V s)minexists for the bioparticles to be retained in the reactor According toY Liu, Wang, and Tay(2005), (V s)mincan be defined as: min effective settling ... a primary inducer of aerobic granulation in SBRs 6.4.3 F EAST -F AMINE R EGIMEN An SBR is operated in a sequencing cycle of feeding, aeration, settling, and dis-charge of supernatant In SBR, the ... reported that intermittent feeding is an effec-tive operating strategy for enhancing aerobic granulation in SBRs For this purpose, different filling times were applied to SBRs, resulting in different

Ngày tải lên: 18/06/2014, 16:20

... loading In biofilm culture, microbial growth kinetics has been reported to be surface loading-dependent (Trinet et al 1991) In fact, microbial surface growth rate and bio-degradation rate of aerobic ... new living conditions instead of growth, and is not included in equation 7.1 Thus, only the size of microbial aggregates at the the growth of aerobic granules As presented inchapter 1, aerobic ... granules in terms ofµ S , q s, and SOUR increase with the substrate surface loading, that is, the kinetic behavior of aerobic granules is dependent on the substrate surface loading According to

Ngày tải lên: 18/06/2014, 16:20

... the increase in the size of aerobic granules, indicating that the microbial activity inside aerobic granules is inhibited as the granule size increases Moreover, the specific growth rate of aerobic ... and 1.0 mm, and the remaining depth in the aerobic granule is deficient in dissolved oxygen (DO) (figure 8.7c, d, and e) Zero DO depths inside the aerobic granules are in good agreement with those ... seen in figure 8.5, a very low Thiele modulus was found in aerobic granules with a radius of 300 μm, that is, the microbial reaction is dominant over diffusion resistance in granules, and maintained

Ngày tải lên: 18/06/2014, 16:20

... mentalconditions.InviewoftheimportanceofPS,thischapterattemptstoprovide adeeperinsightintothefunctionsofEPSinaerobicgranulation. 10.2 MAIN COMPOSITION OF EPS IN AEROBIC GRANULES EPShavebeendetectedinsignicantquantitiesinbothaerobicandanaerobicgran- ules,andtheyformathree-dimensionalmatrixinwhichbacteriaandotherparticles ... Substances in Aerobic Granulation Yu Liu and Zhi-Wu Wang CONTENTS 10.1 Introduction 181 10.2 Main Composition of EPS in Aerobic Granules 181 10.3 Major Factors Inuencing EPS Production In Aerobic ... McSwainetal.2005).ItismostlikelythatEPSplaysanimportantroleinmaintain - ingthestructuralandfunctionalintegrityofaerobicgranules(gure10.5). Tay,Liu,andLiu(2001b)investigatedtheroleofEPSintheformationand

Ngày tải lên: 18/06/2014, 16:20

... 10, an aerobic granule is mainly build up by microbial cells embedded in their excreted extracellular polysaccharides (PS), that is, PS play a cementing role in connecting individual cells into ... of Aerobic Granules 196 11.2.3 Size-Dependent Internal Structure of Aerobic Granules 197 11.2.4 Structure Change of Aerobic Granules during Starvation 198 11.3 Biomass Distribution in Aerobic ... they were within the reach of mass diffusion, while dead cells and anaerobes were mainly detected at the core of the aerobic granule, indicating an uneven microbial distribution in aerobic granules

Ngày tải lên: 18/06/2014, 16:20

... flocculated. Electroflotation is widely used in the mining industries and is finding increasing applications in wastewater treatment. The uniform and tiny sized bubbles-generated electrically give ... found to be the best near neutral pH using aluminum electrode. When iron electrode was used in textile printing and dying wastewater treatment, alkaline in uent was G. Chen / Separation and Purification ... [68], oily wastewater or oil–water emulsion [61,65,66,92,93], spent cooling lubricant [94], wastewater from coke-production [95], mining wastewater [67], groundwater [60], food processing wastewater...

Ngày tải lên: 16/03/2014, 00:07

... Therefore, improvements in settling and dewatering due to increased particle sizes should correlate to an increase in the bound exocellular polymer content involved in the aggregation process. 3.4. ... terms of upgrading or increasing the capacity of the treatment plant. The settling properties of sludge are determined primarily by the conditions prevalent in the aeration basin. The most notably ... of the process. In many cases, the efficiency of the clarifier is the limiting factor in producing a high quality effluent, and it is often regarded as the bottleneck of the process in terms...

Ngày tải lên: 27/06/2014, 13:20

... sludge. Figure9.15showschangesinthesludgevolumeindex(SVI)inthecourseofR1and R2operations.TheSVIinR2remainedataverylowlevelof60mLg –1 ,whilea sharpincreaseintheSVI,followedbyasignicantdecrease,wasobservedinR1.It isclearthatafteraerobicgranulationfromday10onwards,theSVIobservedinR1 decreasedsignicantly,indicatinganimprovedsludgesettleability. The ... process and further improves the property of aerobic granules. The performances of two kindsofaerobicgranulesdevelopedinR1andR2werealsoevaluatedintermsof (a) (b) FIGURE 9.17 Morphologies of aerobic ... chemical solvent present in municipal wastewater, the rst case (high H lv )iscommoninmunicipalwastewater treatment practice, whereas the second case becomes true in treating chemical Time (days) 0246810 Zeta...

Ngày tải lên: 18/06/2014, 16:20

... were conducted by industries using PCBs in processes and products and discharging the PCB- containing waste into rivers and streams. Other PCB-containing waste was disposed of in landfills. When used in transformers ... engineers and scientists (including chemical/civil/ mechanical engineers, biologists, geologists, industrial hygienists, chemists, etc.) in their decision-making process when managing, handling, ... navigation, fishing, boating, swimming, winter sports, water supply, and natural purification. Around Glens Falls, the Hudson runs into civilization, into industry, and, in turn, into an industrial...

Ngày tải lên: 11/08/2014, 18:20