usepa apos s design manual for municipal wastewater disinfection

... minute Specific Gravity The ratio of the specific weight of a substance (such as oil) to the specific weight of a standard substance (such as water) SSU (OR SUS) Viscosity Sabolt Universal Seconds ... pressure Reclassifiers oversized Insufficient lubrication Use smaller reclassifiers Operating pressure to Increase operating lubricator too low pressure Manifold pressure too low Repair System ... serviced All piping should be smooth and clean Unnecessary bends, fittings, etc., should be avoided to eliminate turbulence in the transmission system Do not use street ells in transmission system...

Ngày tải lên: 09/08/2013, 15:00

... maps, land use maps, local GIS maps Sources USGS, USDA - Forest Service, USGS, Army Corps of Engineers, USDA National Conservation Resource Service, USDI Fish and Wildlife Service USDI - Fish ... in this bulletin is for use in design of transmission lines for voltages 230 kV and below Much of this document makes use of standard Rural Utilities Service (RUS) structures and assemblies in ... CONSIDERATIONS Sources Highways Streams, rivers, lakes Railroads Airstrips Topography (major ridge lines, floodplains, etc.) Transmission lines & distribution lines Pipelines,(water, gas, sewer),...

Ngày tải lên: 17/10/2014, 11:34

... materials Soil Testing Table 3.2 sets out the basis on which soils are classified for engineering purposes, and outlines simple field tests that help identification Laboratory tests of soil samples ... Research Establishment BSI (1981) Code of practice for site investigations BS 5930 London: British Standards Institution BSI (1990) Methods of test for soils for civil engineering purposes BS 1377 London: ... available for other functions such as site investigations, and so will be the best person to judge when external skills should be engaged for processes outside the experience of his own workforce...

Ngày tải lên: 31/10/2016, 21:36

... was studied at 20, 30, and 40°C, respectively Analytical methods Measurement of MLSS, mixed liquor volatile suspended solids (MLVSS), effluent suspended solids (SS), NH4+-N, PO43 P, and COD was ... technical feasibility of this process was demonstrated, and the process optimization was performed In addition, the adsorption characteristics of the activated sludge from the CARS system were evaluated ... increase in SRT The PO43 P removal in the CARS system was mainly attributed to the sludge discharge from the system, which was governed by the SRT Thus, the SRT affected the CARS performance significantly...

Ngày tải lên: 05/09/2013, 09:38

... user credentials for the administrative user We need to provide a username and password so use the following: User: Password: root sasquatch 12 Database Design Manual: using MySQL for Windows ... dates, times and numbers MySQL also supports other types that you may be less familiar with Two of these are described below 30 Database Design Manual: using MySQL for Windows SET A set is a ... just use the software! Client-server Systems We have already described how MySQL is a database management system, in that it controls access to the database as well as how the database is physically...

Ngày tải lên: 10/04/2014, 09:06

Ngày tải lên: 12/06/2014, 17:13

... is visible as a shiny slime very similar to the slime found on rocks in a stream As wastewater passes over this slime, the slime adsorbs the organic (food) matter This organic matter is used for ... removes large solids, such as rags, cans, rocks, branches, leaves, and roots, from the flow before the flow moves on to downstream processes SCREENING REMOVAL CALCULATIONS Wastewater operators responsible ... CHEMICAL SOLUTIONS A water solution is a homogeneous liquid consisting of the solvent (the substance that dissolves another substance) and the solute (the substance that dissolves in the solvent)...

Ngày tải lên: 11/08/2014, 13:22

... Normality Settleability (Activated Biosolids Solids) Settleable Solids Biosolids Total Solids, Fixed Solids, and Volatile Solids Wastewater Suspended Solids and Volatile Suspended Solids Biosolids Volume ... solids may be further classified as either volatile solids (organics) or fixed solids (inorganics) Normally, total solids and volatile solids are expressed as percents, whereas suspended solids are ... suspended solids, MLSS) Settled biosolids volume (SBV), or settled sludge volume (SSV), is determined at specified times during sample testing Thirty- and 60-minute observations are used for control Subscripts...

Ngày tải lên: 11/08/2014, 13:22

... per square inch (psi) of atmospheric pressure, but subtracting this 14.7 psi of atmospheric pressure leaves a gauge pressure of psi This shows that the water would rise ft above the reservoir surface ... is 205,000 gallons If a sludge age of days is desired, what is the desired MLSS concentration? 195 A sludge age of 5.5 days is desired Assume that 1610 lb/day suspended solids enter the aeration ... solids loading ratio is 0.06 lb volatile solids added/day/lb volatile solids under digestion, how many lb volatile solids should be in the digester for this volatile solids load? Assume the sludge...

Ngày tải lên: 11/08/2014, 13:22

... Moles Normality Settleability (Activated Biosolids Solids) Settleable Solids Biosolids Total Solids, Fixed Solids, and Volatile Solids Wastewater Suspended Solids and Volatile Suspended Solids ... for a week What is the average SS? Monday Tuesday Wednesday Thursday Friday Saturday Sunday 310 322 305 326 313 310 320 mg/L mg/L mg/L mg/L mg/L mg/L mg/L SS SS SS SS SS SS SS ... water /wastewater operators are required to use, many of them on a daily basis What is mathematics? Good question Mathematics is numbers and symbols Math uses combinations of numbers and symbols to...

Ngày tải lên: 11/08/2014, 13:22

... meters (d) Mass grams grams kilograms kilograms megagrams (tonne) megagrams (tonne) (e) Force Newton Newton (f) Pressure, Stress, Modulus of Elasticity Pascals Pascals kiloPascals kiloPascals (g) ... with the AASHTO LRFD Bridge Design Specifications, and discusses various other design issues A design example is included in Appendix C Chapters through 10 present design recommendations and requirements ... Solutions for Support Stiffness and Maximum Support Pressure for Various Support Systems .6-40 Numerical Modeling Programs used in Tunnel Design and Analysis 6-44 Tunnelman s Ground...

Ngày tải lên: 30/08/2014, 22:32

... adopted various treatment systems that can highly and simultaneously remove nitrogen and phosphorus from wastewater Among those, biological nutrient removal processes, such as suspended and attached ... analyses The water quality parameters including biological oxygen demand (BOD5), total coliform, mixed liquor volatile suspended solids (MLVSS), mixed liquor suspended solids (MLSS), total suspended ... treatment These initial results show that this method of combined EC processing as post-treatment promises to be essential in meeting those requirements and extant stringent regulations Consequently,...

Ngày tải lên: 13/09/2015, 17:48

... variations in mass flowrates Therefore these systems, instead of being operated as a steady-state system it is designed for, become uncontrolled unsteady-state systems These uncontrolled unsteady-state ... Ltot is the loading rate applicable (kg COD/m3.d), LSa is the suspended solids lading rate (kg VSS/m3.r.d), Sa is suspended solids (kg VSS/ m3), Sb is soluble and colloidal solids (kg sCOD/m3) ... systems for wastewater treatment are all unrealistically designed to operate as steady-state systems This is because it was always assumed that steady-state conditions were needed for effluent...

Ngày tải lên: 28/09/2015, 13:38

... Liquid-phase mixing - + * Robustness against hydraulic shocks - * * Robustness against organic shocks + + + Insensitivity to suspended solids - + * Insensitivity to clogging * - * Risk for biomass flotation ... anaerobic-aerobic systems 2.3.2 Necessity of aerobic post-treatment systems 2.3.3 Assessment of technological requirements for combined systems 24 24 26 2.4 Progress of anaerobic digestion technology for municipal ... treatment system For instance, the solubility of gaseous compounds increases as the temperature decreases below 200C At low temperatures, the liquids viscosity is also increased Therefore, more...

Ngày tải lên: 06/10/2015, 20:50

Ngày tải lên: 27/04/2016, 23:10

... adsorbent For many adsorbents regeneration by refractory techniques is possible and for carbon this results in a l0-15% loss of adsorbent.67 In all five adsorption systems discussed previously ... Ys 727 Design models for adsorption systems in wastewater treatment where: Q=mass flow rate of solution; k,=mass-transfer coefficient per unit driving force ( y represents the instantaneous ... result in high mass-transfer rates, but suffer from relatively short residence times 2.1 Batch adsorption The schematic diagram for a single-stage adsorption process is shown in Figure The solution...

Ngày tải lên: 25/08/2016, 19:14

... ns validation suite with cd ns-2.29; /validate For trouble shooting, please first read ns problems page http://www.isi.edu/nsnam/ns/ns-problems.html Also search the ns mailing list archive for ... 4) Select “install local directory” 5) Select browse for “cygwin” file (I selected as default) 6) Install “C:\NS2\NS-2.29 Install files\Cygwin files \ftp%3a%2f%2fftp.mirror.ac.uk%2fsites%2fsources.redhat.com%2fftp%2fcygwin” ... Install “Install “C:\NS2\NS-2.29 Install files\Cygwin files \ ftp%3a%2f%2fftp.is.co.za%2fmirrors%2fcygwin” 11) Select to install all 12) Finish in stalling “ftp%3a%2f%2fftp.is.co.za%2fmirrors%2fcygwin”...

Ngày tải lên: 23/11/2012, 09:34

... BANKNOTES SERVICES Business Activities foreign currency aspects relating to banking services such as service funds, deposit services, service pay / bar accounting checks tourism, services credit ... currencies by their cash) to pay salary, bonus, allowances for non-residents, the residents are foreigners - Who residents, who are not homeless personal residence is open and use your deposit in foreign ... environments to determine its resources, capabilities, and core competencies – the sources of its “strategic inputs.” With this information, the firm develops its vision and mission and formulates its strategy...

Ngày tải lên: 29/03/2013, 14:53

... MESSAGE-ORIENTED WEB SERVICES Listing 3-4 The IDC File for the RequestQuote Operation and Its Associated Types using using using using using System; System.Web.Services; System.Web.Services.Description; ... messages, so you need to design the schema files first XSD schema files may be coded by hand, but it is easier to use a visual designer tool, such as Visual Studio 2005 s XML Designer To access the ... Description .xsd The name of a schema containing the elements to import /classes A switch that generates classes for this schema The short form is /c /dataset A switch that generates subclassed...

Ngày tải lên: 05/10/2013, 08:48

... StockTraderContracts Web Service using using using using System.Web; System.Web.Services; System.Web.Services.Protocols; System.Web.Services.Description; using StockTraderTypes; using StockTraderBusiness; namespace ... StockTraderBusiness Business Assembly using System; using StockTraderTypes; namespace StockTraderBusiness { public class StockTraderBusiness : StockTraderTypes.IStockTrader { public Quote RequestQuote(string ... is the business assembly The Business Assembly (StockTraderBusiness) The business component sets references to both the service agent assembly and the definition assembly of custom types Listing...

Ngày tải lên: 05/10/2013, 08:48