Outlet Weir Articles | Environmental XPRT

Assessomg the Performance of Secondary Settling Tank by Means of Flow Modeling

ABSTRACTA model of the double-decker rectangular settling tanks proposed for the Wastewater Treatment Plant of Besòs in Barcelona, Spain was prepared using Computational Fluid Dynamics (CFD). The modeling approach used was a three dimensional, multi-phase simulations with solids transport and removal included, and reflected the state of the art in clarifier modeling. Special attention was paid to ...

Oct. 22, 2006

By Water Environment Federation (WEF)

SaniTEE: an ideal septic tank wastewater screen

SaniTEE is an effluent wastewater screen (commonly known as an effluent filter) that reduces the gross suspended solids discharged in septic tank effluent. This helps extend the lives of drain fields, reduces clogging of orifices in effluent disposal systems, and allows use of non-solids handling effluent pumps. It is shown in Figure 1. It fits inside a standard septic tank outlet tee by dropping ...

Dec. 15, 2010

By Bio-Microbics, Inc.

Gem-D Series - Case Study

Introduction Clean Water Technology, Inc., the creator of the Gas Energy Mixing (GEM) System, introduces their newest in technology The GEM - D Series for municipal water and wastewater applications. The GEM-D Series is a hybrid dissolved air – flotation system. What makes the GEM-D Series better than the rest? Introduction of air through Liquid Solid Gas ...

Aug. 17, 2012

By Clean Water Technology, Inc.

Comparing the flow dynamics and particle settling in full-scale sedimentation tanks of different lengths

The efficiency of sedimentation is dependent on settling tank design and operation, where the streamlined solid–liquid separation results in water of safe potable quality. It is therefore important that the tank design and operation are sufficiently optimised. Sedimentation tanks are commonly overdesigned, leading to unwarranted capital expenditure, and overloading. This study used ...

Dec. 15, 2016

By IWA Publishing

Monroe Parallel Plate Modules increase oils and solids removal in existing API Separator

Challenge A silicone manufacturing plant was increasing capacity production and needed to increase the processing of the accompanying wastewater stream containing tramp oils and solids. If possible, the plant wanted to increase the efficiency and capacity of two existing 140,000-gallon API Separators to handle the additional wastewater. The plant required that the water be clean enough to ...

Nov. 2, 2011

By Monroe Environmental Corporation

Modeling of Sedimentation in Stormwater Detention Basins

ABSTRACTTo minimize the non-point source pollution from roadway surface, the Texas Department of Transportation (TxDOT) initiated a research project for design of a small footprint non-proprietary detention basin, which consists of pipes and box culvert sections with specialized inlet and outlet system. A conceptual model was developed to estimate particle removal efficiency of the rectangular ...

Oct. 22, 2006

By Water Environment Federation (WEF)

Water system master plan

Client: City of Fort Smith, Ark. Completion Date: 2002 Services Provided Water supply/delivery Hydraulic modeling and design Water quality analyses Water supply hydrology Flood hydrology 3-D project rendering Physical hydraulic models Spillway hydraulics ...

Sep. 21, 2009

By Burns & McDonnell

Super Size My Stormwater Treatment System, Please!

Many municipalities have vast areas of developed impervious acreage from which stormwater drains without any form of treatment. These drainage systems were designed decades ago, predating regulatory requirement for nonpoint source pollution control. Every year pollutants from these sites discharge high levels of sediment, nutrients, trash, and heavy metals into local waters, impairing usage, ...

Oct. 13, 2006

By BaySaver Technologies, Inc.

Kijlstra precast units speed up Kingsnorth development

Pre-cast concrete headwalls by specialist drainage manufacturer Kijlstra have helped civil engineering contractor Volker Fitzpatrick minimise costs and reduce construction times on a business park development in Kent. The Kingsnorth Commercial Park, a 115 acre greenfield site on the Isle of Grain, is being developed by property firm Goodman to provide up to 2 million sq ft of industrial and ...

Mar. 11, 2011

By Kijlstra LTD.

Oil Skimmer makes oil/water separator more efficient

Industrial facilities depend on oil/water separators to separate oil from its waste water. While oil/water separators are a helpful component to a plant's wastewater system, oil/water separators traditionally do not provide an efficient method of removing oil once it has been separated from the waste stream. Traditionally, the separator industry has either used overflow skimmer pipes or weirs, or ...

Dec. 26, 2011

By Oil Skimmers, Inc.

Cleaner Production Changes - Plenty to Crow About: Joe`s Poultry Processors

By implementing a number of simple measures recommended by consultants, Joe’s Poultry has been able to save $54,000 with an overall payback period of less than 4 months. Through these measures, electricity and gas consumption has been reduced by 16 and 15 percent respectively. Water consumption has been cut by 8.8kL per day. Other measures, if implemented, could produce savings of almost $1 ...

Jun. 1, 1998

RP18 as a Filter case study

More than just an adsorbent fabric, RP18's special design qualities make it a good filter too. The construction of RP18 is such that there is a large amount of free space which allows water to pass through whilst retaining the oil. This has been illustrated also in 'A method for Cleaning Foreshores' case study. This fabric is useful where water flows are high and the amount of oil retained is ...

Sep. 5, 2014

By Oil Pollution Environmental Control Ltd

Lake Fort Smith dam & reservoir enlargement

Client: City of Lake Fort Smith, Ark. Completion Date: 2006 Services Provided Intake tower with microtunnels Road relocation Raw water lines Outlet works Pressure reducing station Dam embankment Principal spillway Auxiliary spillway ...

Sep. 21, 2009

By Burns & McDonnell

Inland diesel spill case study

Introduction In January 2000 an oil spill occurred in the North of England. It was estimated up to 30,000 litres of diesel fuel had escaped the fuel storage tanks of a major factory due to a burst pipe. Fortunately most of the spilled oil found its way to a nearby drainage facility owned by the local Water Authority. Due to neglect the drainage outlet pipe that feeds ...

Sep. 5, 2014

By Oil Pollution Environmental Control Ltd

Oil/water separator and oil skimmer companies work together to help power generation facilities

Power generation facilities depend on oil/water separators to separate oil from its waste water. While oil/water separators are a helpful component to a plant’s wastewater system, oil/water separators traditionally do not provide an efficient method of removing oil once it has been separated from the waste stream. Knowing what his customers were faced with, Dave Goding, president, Mercer ...

Jan. 1, 2007

By Oil Skimmers, Inc.

Shannon Creek Dam Switches to Custom Anti-Cav Control Valve Solution

Shannon Creek Dam and pump station is the core feature of the Regional Water Supply scheme, a joint venture of the Coffs Harbour City Council and the Clarence Valley Council. With an inundation area is 37 square Km, the reservoir provides 30,000 mega litres of supplementary water supply to The Clarence Valley and Coffs Harbour, located on the Mid North Coast of NSW, Australia. This award-winning ...

May 4, 2016

By Singer Valve Inc.

Balancing growth and conservation - Precast concrete manholes become part of the stormwater solution

When American Fork, Utah, decided to approve construction of a 175-acre commercial center, the city engineers had to consider the environmental effect it would have on a 45-acre wetland right next door. Under the EPA´s Phase II Storm Water Rules, adapted in late 1999, almost any city large enough to require a storm sewer system must balance growth with the environmental impacts of ...

Jan. 5, 2005

By BaySaver Technologies, Inc.

JPE Investment provides evidence of a solution to UK aggregates shortages

An upgrade to the processing capability at Elford quarry to include a modular washing plant from CDE Global has resulted in a significant increase in the value of the products being produced. The level of demand for the recycled sand and aggregate products suggests that C&D recycling plants offer a real solution to a diminishing supply of virgin material in the UK. JPE Aggregates has operated ...

Mar. 23, 2011

By CDEnviro

Closures of mine a new challenge for Romania

AbstractThe mining activity is one of the oldest activity in Romania, dating from the year 100 B.C. The gold and silver ores represented one of the riches of our country. In time the economic content of metals diminuend, and the ore mines become non profitable. Due to this situation the best option of the State was the closure and ecological rehabilitation of the mines.The steps for the ...

Aug. 17, 2007

Fixed vs. Moving Bed Systems: Media Retention and Headloss

Submerged fixed-film media is utilized within aeration basins to optimize biological treatment and increase capacity. Therefore, proper design and installation of the equipment used to keep the media in the aeration basin and prevent it from passing downstream is critical to system function. ...

May 3, 2016

By Brentwood Industries, Inc.

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