Wyniki wyszukiwania:

The safe and efficient operation of a liquid piping system is dependent on the continual removal of air and wastewater gases from the liquid piping system. Choosing the proper air valve for the application is critical to all liquid piping systems.

This manual provides essential information for selecting, sizing, locating, and installing air valves in water, wastewater and reclaimed water pipeline systems. This revised second edition includes information pertaining to wastewater applications including scouring velocities for larger piping systems, and information on an inflow...

Microfiltration and ultrafiltration have gained rapid acceptance as processes that provide a reliable and very high level of particle, turbidity, and microorganism removal. This manual contains information on low-pressure membranes in widely diverse applications, operations and system designs. It will help water operators, engineers, and management ensure the success of an installation.

Chapters cover topics such as water quality, membrane science and theory, system concepts, MF and UF membrane manufacturers, applications, pilot testing, design concepts, operations, cost, residuals...

This operations manual provides information for water treatment operators about waterborne viral, bacterial, and parasitic pathogens. It describes each type of pathogen, how it enters the water supply, its diseases, and its treatment.

The manual provides operational procedures for monitoring, sampling, and testing; treatment and disinfection practices for all types of pathogens; and control techniques, including cross-connection control, dead-end flushing, and hydrant flushing. Includes waterborne disease statistics.

Controlling corrosion, done properly, can help extend the useful life of water infrastructure. Effective prevention or mitigation strategies to control corrosion are appropriate for the material and the environment involved, as well as economically feasible.

The newly revised and renamed M27 presents a logical and well-considered look at

1. How and why corrosion occurs
2. How to evaluate the corrosion potential of an environment
3. How prevention and control measures operate

Updates to this third edition were made to the figures, tables and text,...

This fifth edition provides a complete manual of practice for water utilities on the selection, installation, operation, and maintenance of customer water meters.

The manual also provides sample record-keeping forms, a history of water use measurement, and the development of modern water meters. M6 is heavily illustrated with photos, diagrams, and performance specs.

M6 gives you all the information needed to make sure your customer meters are accurately capturing water use-and protecting your revenue:
- Meter types, construction, and operation

Get specific guidance on designing, operating, and maintaining water distribution systems as they relate to fire protection and fire suppression activities and maximize fire protection benefits, while delivering safe, potable water to customers.

Benefits: The fourth edition has all the information you need to

• Understand the influence of fire protection requirements on distribution system design
• Determine required fire flows, using approved calculation methods
• Correctly size water system components and storage facilities
• Provide adequate and...

This comprehensive, how-to manual and guide demonstrates how to produce a long term Integrated Resource Plan for a water utility. It helps water resources planners develop and implement a comprehensive work plan that responds to technical and institutional questions that must be addressed before deciding how to develop new water supplies.

The third edition has been completely re-arranged to better reflect the water resources planning process. Several areas of the manual have expanded information, such as: stakeholder involvement throughout the process, reclaimed water and other...

Cleaning: flushing, cable-attached devices, pigs and other fluid-propelled cleaning devices, and power boring devices.

Lining: cement-mortar lining, epoxy lining, conventional slip-lining, close-fit slip-lining, and cured-in-place lining techniques.

Replacment: Trenchless pipe replacement using pipe-bursting technology

M42 will help you make sure you build the storage facility you need in the right place and at the right price.

This official AWWA Manual of Water Supply Practices is a complete reference on steel water-storage tanks for potable water. M42 is intended to serve as a comprehensive, single-volume, information source for designers, engineers, constructors, owners, and operators of steel water tanks.

M42 provides the information you need on

• Ground-supported standpipes and reservoirs
• Elevated tanks
• Welded or bolted construction
• Location, sizing,...

Written for both public and investor-owned utilities, AWWA M29 Water Utility Capital Financing, Fourth edition addresses both traditional and innovative utility financing alternatives to meet both short-and long-term capital requirements. M29 covers timely concerns such as inflation, growth-related demands, the impacts of public pressure to keep rates low, and new financing options and considerations. This manual should primarily be considered as a guide for determining capital requirements, strategic planning, and financing alternatives. It also provides general information for...

This publication is the second edition of the American Water Works Association (AWWA) Manual M20; the original manual was titled "Water Chlorination." This manual provides information on chlorination and chloramination practices for the disinfection of drinking water. It does not cover the use of chlorine as an oxidant or as a disinfectant for pipeline and appurtenances.

Topics covered include: history of chlorination and chloramination; properties of chlorination chemicals; chlorination water chemistry and disinfection mechanisms; handling, storage, feed equipment of chlorine and...

Coagulation and filtration are the heart of conventional water treatment plants. Employing proper coagulation chemistry is fundamental to successful filtration. This manual is designed to help you keep your treatment plant's coagulation and filtration processes operating at optimum efficiency. The manual has all the information needed to design and operate jar tests, online monitoring and control, flocculation, clarification, filtration, and pilot tests.

The manual covers all areas of coagulation and filtration practice:

1. Particle and Natural Organic Removal in...

The objective of this manual is to disseminate information on automatic and remote operation and instrumentation of pumping stations and distribution and supply systems, including valves, storage tanks, and booster pumps.

This third edition of M2 includes basic information on electrical power distribution and updates the automation and instrumentation technology that has changed rapidly since the second edition in 1983. It discusses equipment, terms, and expressions an operator encounters wherever electrical systems, automation, and instrumentation are found in water distribution,...

Precoat filtration is a US Environmental Protection Agency- (USEPA-) accepted filtration technique for potable water treatment. When the Surface Water Treatment Rule (SWTR) went into effect in 1989, it provoked a renewed interest in this filtration process as well as other accepted filtration methods. This manual provides general guidelines for the use of precoat filtration, commonly called diatomaceous earth (DE or diatomite) filtration, in potable water treatment. It includes an evaluation of appropriate applications for precoat filtration, discusses the design of economical filtration...