nitrification process wastewater treatment plants

Ngày tải lên: 05/09/2013, 15:28

... requirements on pumping installations at wastewater treatment plants, provided initially as part 2 "Pumping installations for wastewater treatment plants& quot;, see EN 752-6 "Drain and ... should be specified. 5.1.4 Data from existing wastewater treatment plants The loading data and the operational results of the existing wastewater treatment plants contain valuable information. As a ... for (where appropriate): – raw wastewater pumping, – main treatment process (e. g. aeration, mixers, internal pumping, scrapers), – tertiary treatment, – sludge treatment including pumping, mixing,...

Ngày tải lên: 16/03/2014, 18:11

Ngày tải lên: 05/09/2013, 10:17

Ngày tải lên: 05/09/2013, 08:40

Ngày tải lên: 05/09/2013, 09:08

Ngày tải lên: 05/09/2013, 10:15

Ngày tải lên: 05/09/2013, 10:15

Ngày tải lên: 05/09/2013, 10:15

... 10 Table 1: Wastewater Treatment Attributes and Attribute Levels used in the Choice Experiment Attributes Definition Levels Quantity of treated wastewater Total volume of wastewater treated ... the wastewater generated by the municipality with primary treatment. This would significantly reduce the discharge of untreated wastewater in the Ganga. Low *, High Quality treated wastewater ... wastewater Current capacity of the STP can only treat wastewater with primary treatment technology. The quality of wastewater treated with primary treatment is low, and when used for agri/aquaculture...

Ngày tải lên: 18/02/2014, 01:20

Ngày tải lên: 18/02/2014, 04:20

... Incorporateslong-rangeplanningintotheconstructionofitslandlls. Wastewater Treatment Division • Reusesheatgeneratedbyitspumps. • CollectsandsellsbiogasasacommodityattheSouthPlant. • Usesreclaimedwaterforoperationsatboth treatment plants. • ... 81 AppendixB–SummaryofleadingpracticesbySolidWasteand Wastewater Treatment Divisions 82 AppendixC–Auditareabenchm arking 85  AppendixD–OrganizationalstructureofKingCountyUtilities 91 AppendixE–Solidwaste treatment process diagram ... Issues 5 remainopenfortwomoreyearsifthemaintenanceshopatthelandllwereremovedand thespaceusedforgarbage.ThiswouldresultintheCountysavingapproximately$25million duringthetwoyearsbynotpayingtohaulgarbagetoanothersite. Additionally,thelandlldischarges wastewater intotheseweratacostofapproximately$1 millionperyear.Thelandllcouldcapturethe wastewater andrecirculateitoverthetopofthe landlltohelpexistinggarbagedecayfasterandcompacttighter,creatingadditionalairspace thatwillextendthelifeofthelandll.Weestimatebycreatingthisextraspace,thelandll couldsaveanadditional$31.1millionstartingbetween2016and2018bynottransporting garbagetoanotherlocation. Thelandllcouldcaptureandselladditionalmethanegeneratedfromtherecirculationof wastewater intothelandll.Weestimatethelandllcouldgeneratefrom$1.1millionto$3.1 millioninrevenueinmethanesalesoverveyears. TheSolidWasteDivisionwillneedtopursueregulatoryapprovalfromthestateDepartmentof Ecologytomodifyitspermitbeforeitcaninstitutetheserecommendations.Thepotentialcost savingsdonotincludepotentialcostsforimplementingtherecommendations. Biogas use The Wastewater Treatment Divisionhasnotensureditscapitalinvestmentsinbiogas generationarecost-eective. In2004,the Wastewater Treatment DivisiondevelopedaplaninresponsetoaKingCounty ExecutiveOrdertoconstructawaste-to-energysystematitsWestPointPlanttocollect methanegasgeneratedfromwater treatment anduseittogenerateelectricalpower. In2004,theDivisionpurchasedtwogeneratorsfor$4.8millionbeforeitobtainedanaccurate estimateofhowmuchitwouldcosttocompletetheproject.Thecosttocompletetheproject, whichwasestimatedat$6.1millionin2004,grewto$39.2millionin2009.Theprojectis currentlyonhold. Inadditiontousingthebiogasbyproducttogenerateelectricity,theDivisioncouldclean impuritiesfromthegasandsellaportionofthegastolocalutilitiesthroughtheexisting pipeline,asitdoesattheSouthPlant.AlthoughtheCountystatedthepipelinecouldnot handletheadditionalgaspressure,itdidnotconsiderapartialdistributiontotheutility.We estimateiftheplantsoldportionofitsbiogasasacommodity,itcouldgenerate$2.7million overthenextveyears. Overtime...

Ngày tải lên: 06/03/2014, 23:20

... biomass production during wastewater treatment, Wat. Res., accepted for publication. Low E. W. and Chase H. A. (1998c) Reduced biomass production during wastewater treatment, II. Eects on oxygen ... WITHIN WASTEWATER TREATMENT While no single species is capable of utilising all the assorted organic and inorganic compounds found in wastewaters, the heterogeneous microbial population in a wastewater ... is; 1 Y S  q m m  1 Y G 1 However, this relationship can not adequately describe most wastewater treatment processes, which seek to enhance the concentration of the cat- alytic biomass. Bouillot...

Ngày tải lên: 11/03/2014, 23:04

... cooling lubricant [94], wastewater from coke-production [95], mining wastewater [67], groundwater [60], food processing wastewater [96], fat-containing solutions [97], restau- rant wastewater [42] or ... is usually to use iron for wastewater treatment and alu- minum for water treatment because iron is relatively cheaper. The aluminum plates are also finding applica- tions in wastewater treatment either ... useful in wastewater treatment [37]. It has been employed in treating wastewaters from textile [38–41], catering [29,42], petroleum, tar sand and oil shale wastewater [43], carpet wastewater...

Ngày tải lên: 16/03/2014, 00:07

... Over half of this was on wastewater provision. In the year 1998/1999, £1.9bn was spent on new wastewater treatment plants alone as compliance with the European Union Urban Wastewater Treatment Directive ... of Wastewater Treatmen t (New Edition) bwt 10 How Nature Deals with Waste Table 1.6. The Urban Wastewater Treatment Directive (91/271/EEC) sets dis- charge limits for wastewater treatment plants. ... Scientific Biology of Wastewater Treatmen t (New Edition) bwt 16 How Nature Deals with Waste Table 1.8. Main chemical and biological unit processes employed in wastewater treatment. Process Description Chemical...

Ngày tải lên: 16/03/2014, 18:09

... complete treatment plants for small communities, developments, and isolated installations by manufacturers of waste treatment equipment in the form of packaged plants. A conventional scheme for wastewater ... in biological treatment are listed in Table 1 along with the treatment agents and typical wastes that are treated. TABLE 1 METHODS OF BIOLOGICAL TREATMENT Process Treatment Agent ... aerobic treatment) . Any one or more of these transport rates can be the controlling factors that determine the process efficiency. Types of Biological Processes Biological treatment processes...

Ngày tải lên: 16/03/2014, 18:11

... INDUSTRIAL AND MUNICIPAL WASTES 1 Wastewater Treatment 3 BOD Removal 5 Types of Biological Processes 5 Municipal Wastewater 6 Activated Sludge Process 7 Sludge 10 Tapered ... aerobic treatment) . Any one or more of these transport rates can be the controlling factors that determine the process efficiency. Types of Biological Processes Biological treatment processes ... Biotechnology for Waste and Wastewater Treatment Content Content 34 Biotechnology for Waste and Wastewater Treatment Suspended Growth Systems Suspended-growth denitrification is usually...

Ngày tải lên: 16/03/2014, 18:11

... funding to construct municipal wastewater treatment plants under the State Revolving Fund provisions of the 1987 AN OVERVIEW OF WATER AND WASTEWATER TREATMENT 33 33 U.S.C. Section ... is an integral component of drinking water and wastewater treatment applications. It is, however, but one unit process within a modern water treatment plant scheme, whereby there are a multitude ... Water and Wastewater Treatment, 1 Introduction, 1 What We Mean by Water F’urification, 4 The Clean Water Act, 26 Introducing the Physical Treatment Methods, 33 Introducing Chemical Treatment, ...

Ngày tải lên: 16/03/2014, 18:11

... Review Questions and Problems References Chapter 1 8Wastewater Treatment 18. 1Wastewater Operators 18.1.1The Wastewater Treatment Process: The Model 18. 2Wastewater Terminology and DeÞnitions 18.2.1Terminology ... Degritter 18.7.9Preliminary Treatment Sampling and Testing 18.7.10Other Preliminary Treatment Process Control Calculations 18.8Primary Treatment (Sedimentation) 18.8. 1Process Description 18.8.1.1Overview of Primary Treatment 18.8.2Types ... Problems Reference Chapter 17Water Treatment Operations and Unit Processes 17.1Introduction 17.2Waterworks Operators 17.3Purpose of Water Treatment 17.4Stages of Water Treatment 17.5Pretreatment 17.5.1Aeration 17.5.2Screening 17.5.3Chemical...

Ngày tải lên: 01/04/2014, 11:46

... floatable solids. It is used in primary treatment, secondary treatment, and advanced wastewater treatment processes. In this section, we focus on primary treatment or primary clarification, which ... most commonly used in wastewater treatment, the process that occurs within the pond is described in greater detail below. When wastewater enters the stabilization pond several processes begin to ... organisms in the aerobic decomposition process. When compared with other wastewater treatment sys- tems involving biological treatment, a stabilization pond treatment system is the simplest to...

Ngày tải lên: 13/05/2014, 13:26