Water and power consumption analysis of sewage treatment plant

Background[ edit ] Irrigation water is pumped from this tank which stores effluent received from a constructed wetland in Haran-Al-Awamied, Syria. Achieving more sustainable sanitation and wastewater management will require emphasis on actions linked to resource management, such as wastewater reuse or excreta reuse that will keep valuable resources available for productive uses. Simply stated, reclaimed water is water that is used more than one time before it passes back into the natural water cycle.

Water and power consumption analysis of sewage treatment plant

An acronym is an abbreviation coined from the initial letter of each successive word in a term or phrase. In general, an acronym made up solely from the first letter of the major words in the expanded form is rendered in all capital letters (NATO from North Atlantic Treaty Organization; an exception would be ASEAN for Association of Southeast Asian Nations). Yokogawa provides optimum solutions to improve the reliable operation of water treatment plants. These solutions include sophisticated technologies, unsurpassed product quality, and extensive application know-how throughout the lifecycle. Glossary of Water Resource Terms. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z A abandoned water right a water right which was not put to beneficial use for a.

Mara Anaerobic ponds normally have a depth between 2m and 5m and function as open septic tanks with gas release to the atmosphere. The biochemical reactions which take place in anaerobic ponds are the same as those occurring in anaerobic digesters, with a first phase of acidogenesis and a second slower-rate of methanogenesis see Example 3.

Ambient temperatures in hot-climate countries are conducive to these anaerobic reactions and expected BOD5 removals for different retention times in treating sewage have been given by Mara as shown in Table More recently, Gambrill et al.

Water and power consumption analysis of sewage treatment plant

Higher removal rates are possible with industrial wastes, particularly those containing significant quantities of organic settleable solids. Of course, other environmental conditions in the ponds, particularly pH, must be suitable for the anaerobic microorganisms bringing about the breakdown of BOD.

In certain instances, anaerobic ponds become covered with a thick scum layer, which is thought to be beneficial but not essential, and may give rise to increased fly breeding. Solids in the raw wastewater, as well as biomass produced, will settle out in first-stage anaerobic ponds and it is common to remove sludge when it has reached half depth in the pond.

This usually occurs after two years of operation at design flow in the case of municipal sewage treatment. Facultative Ponds The effluent from anaerobic ponds will require some form of aerobic treatment before discharge or use and facultative ponds will often be more appropriate than conventional forms of secondary biological treatment for application in developing countries.

Primary facultative ponds will be designed for the treatment of weaker wastes and in sensitive locations where anaerobic pond odours would be unacceptable.

Solids in the influent to a facultative pond and excess biomass produced in the pond will settle out forming a sludge layer at the bottom. The benthic layer will be anaerobic and, as a result of anaerobic breakdown of organics, will release soluble organic products to the water column above.

Organic matter dissolved or suspended in the water column will be metabolized by heterotrophic bacteria, with the uptake of oxygen, as in convential aerobic biological wastewater treatment processes.

However, unlike in convential processes, the dissolved oxygen utilized by the bacteria in facultative ponds is replaced through photosynthetic oxygen production by microalgae, rather than by aeration equipment. Especially intreating municipal sewage in hot climates, the environment in facultative ponds is ideal for the proliferation of microalgae.

High temperature and ample sunlight create conditions which encourage algae to utilize the carbon dioxide CO2 released by bacteria in breaking down the organic components of the wastewater and take up nutrients mainly nitrogen and phosphorus contained in the wastewater.

This symbiotic relationship contributes to the overall removal of BOD in facultative ponds, described diagrammatically by Marais as in Figure 8.

Water and power consumption analysis of sewage treatment plant

Energy flows in facultative stabilization ponds Marais To maintain the balance necessary to allow this symbiosis to persist, the organic loading on a facultative pond must be strictly limited. Even under satisfactory operating conditions, the dissolved oxygen concentration DO in a facultative pond will vary diurnally as well as over the depth.

Maximum DO will occur at the surface of the pond and will usually reach supersaturation in tropical regions at the time of maximum radiation intensity, as shown in Figure 9. From that time until sunrise, DO will decline and may well disappear completely for a short period.

For a typical facultative pond depth, Df, of 1. As illustrated in Figure 9, the pH of the pond contents will also vary diurnally as algae utilize CO2 throughout daylight hours and respire, along with bacteria and other organisms, releasing CO2 during the night. Diurnal variation of dissolved oxygen and pH in facultative pond, pH:A new energy-efficient process developed at Murdoch University is set to revolutionise wastewater treatment by significantly reducing the industry's electricity consumption.

Algae-based Wastewater Treatment. Compiled by a diverse team of experts, with experience in scientific and industrial fields, the Comprehensive Report for Wastewater Treatment Using Algae is the first report that provides in-depth analysis and insights on this important field.

Algae-based Wastewater Treatment. Compiled by a diverse team of experts, with experience in scientific and industrial fields, the Comprehensive Report for Wastewater Treatment Using Algae is the first report that provides in-depth analysis and insights on this important field.

The Office of Public Affairs (OPA) is the single point of contact for all inquiries about the Central Intelligence Agency (CIA). We read every letter, fax, or e-mail we receive, and we will convey your comments to CIA officials outside OPA as appropriate.

A new energy-efficient process developed at Murdoch University is set to revolutionise wastewater treatment by significantly reducing the industry's electricity consumption. Unable to understand various water treatment terms and definitions? Read A-Z glossary from Aqua Science to know words used in most water filtration systems.

Science & Technology in Action