Biological nutrient removal (BNR), the removal of nitrogen and phosphorus from wastewater, is a complex process. Although the activated sludge process is an efficient technology for the removal of biochemical oxygen demand (BOD) and total suspended solids (TSS), it provides less-than-optimal conditions for the removal of nitrogen and phosphorus, and presents numerous challenges to the operator trying to satisfy the many requirements for several different groups of bacteria. In addition to satisfying the requirements there are numerous, highly variable operational conditions that impact BNR. These conditions include: changes in strength and composition of the wastewater, alkalinity and pH, temperature, and presence of inhibitory and toxic wastes. Even fluctuations in flows, especially from inflow and infiltration, can adversely impact the aerobic, anoxic, and anaerobic conditions needed for successful BNR. Of the three treatment processes, nitrification, denitrification, and enhanced biological removal, nitrification is often the most difficult to achieve. Therefore, a large portion of this book reviews nitrification. Operators of the activated sludge process need to understand the basic biological, chemical, and physical requirements for BNR in order to improve the performance of these treatment processes. An Operator’s Guide to Biological Nutrient Removal (BNR) in the Activated Sludge Process is intended to help operators in the monitoring, troubleshooting, and process control of BNR. Numerous tables and figures are included in the book to help the operator understand the biological and chemical reactions that are involved in BNR processes and how the reactions can be monitored for process control. Design of BNR processes is not addressed in this book. Design is addressed in numerous engineering publications. The book serves to help operators achieve permit compliance for nitrogen and phosphorus discharge limits and obtain cost-effective operation.

This “inside account captures the energy—and the madness—of the software giant’s race to develop a critical new program. . . . Gripping� (Fortune Magazine). Showstopper is the dramatic, inside story of the creation of Windows NT, told by Wall Street Journal reporter G. Pascal Zachary. Driven by the legendary David Cutler, a picked band of software engineers sacrifices almost everything in their lives to build a new, stable, operating system aimed at giving Microsoft a platform for growth through the next decade of development in the computing business. Comparable in many ways to the Pulitzer Prize–winning book The Soul of a New Machine by Tracy Kidder, Showstopper gets deep inside the process of software development, the lives and motivations of coders and the pressure to succeed coupled with the drive for originality and perfection that can pull a diverse team together to create a program consisting of many hundreds of thousands of lines of code.

Defines the content, format, and units of measurement for the exchange of fingerprint, palmprint, facial/mugshot, and scar, mark, & tattoo (SMT) image information that may be used in the identification process of a subject. The information consists of a variety of mandatory and optional items, including scanning parameters, related descriptive and record data, digitized fingerprint information and compressed or uncompressed images. This information is intended for interchange among criminal justice administrations or organizations that rely on automated fingerprint (AFIS) and palmprint identification systems or use facial or SMT data for identification purposes.

Across Asia there is a keen interest in the potential advantages of America's market-led system of voluntary standards and its contribution to US innovation leadership in complex technologies.

For its proponents, the US tradition of bottom-up, decentralized, informal, market-led standardization is a "best practice" model for innovation policy. Observers in Asia are, however, concerned about possible drawbacks of a standards system largely driven by the private sector.

This study reviews the historical roots of the American system, examines its defining characteristics, and highlights its strengths and weaknesses. A tradition of decentralized local self-government has given voice to diverse stakeholders in innovation. However, a lack of effective coordination of multiple stakeholder strategies constrains effective and open standardization processes.

Asian countries seeking to improve their standards systems should study the strengths and weaknesses of the American system. Attempts to replicate the US standards system will face clear limitations--persistent differences in Asia's economic institutions, levels of development, and growth models are bound to limit convergence to a US-style market-led voluntary standards system.

Written by an author who is practically involved in installing alternate energy Who is this book meant for: systems for many years 1) General Readers as they are using power in different form everyday 2) Students at any level of Science and Engineering especially Physics, Environment, Electrical, Automotive 3) Governments and Electricity Power providers 4) Automobile and Aircraft manufacturers Fuel generating electricity systems & awareness: . Making popular to use alternative energy by World Bank Manufacturing process of PV cell: Characteristics of PV Module How the solar cell works: Different types of solar electric systems and How they can be built up Grid connected PV systems....... Maximum Power Point Tracker (MPPT): Charge Controllers in PV Systems: Storage System: . 2) Students at any level of Science and Engineering especially Physics, Environment, Electrical, Automotive 3) Governments and Electricity Power providers 4) Automobile and Aircraft manufacturers

A common sense approach to servicing and installing commercial boilers. This book contains information on the following topics: Boiler Room Safety, Hydronic Boilers, Low Pressure Steam Boilers, Boiler Sizing, Modulating Burners, Condensing Boilers, Boiler Construction, Boiler Installation Tips, Boiler Venting, Glycol, Boiler Start-up, Heating Rules of Thumb.

A heavily illustrated classic on the evolution of the handloom. The handloom-often no more than a bundle of sticks and a few lengths of cordage-has been known to almost all cultures for thousands of years. Eric Broudy places the wide variety of handlooms in their historical context. What influenced their development? How did they travel from one geographic area to another? Were they invented independently by different cultures? How have modern cultures improved on ancient weaving skills and methods? Broudy shows how virtually every culture has woven on handlooms. He highlights the incredible technical achievement of early cultures that created magnificent textiles with the crudest of tools and demonstrates that modern technology has done nothing to surpass their skill or inventiveness.

"From T-2 to Supertanker" provides a unique insight into the oil tanker industry's efforts to produce safe and efficient vessels.

Dr. Andrew G. Spyrou believes that marine transportation is the key to effective global shipping, part of which is carrying petroleum by tanker. Enormous changes have taken place in tanker design and construction since World War II. Closure of the Suez Canal on two occasions-1956 and 1967-provided the impetus to enlarge the tanker and to improve tanker performance and safety.

The industry's efforts to design and construct today's modern tankers, driven by scale, safety and ecological concerns, have led to ever-larger models. Today's 'Very Large' and 'Ultra Large' crude oil carriers represent the most complexmobile steel structures ever developed.

Spyrou discusses how this industry is striving to minimize vital ecological concerns such as oil pollution of the seas, atmospheric pollution by engine exhaust, and contamination of the marine ecosystem. Advances, however, have not been without crises, challenges, and successes.