tunnel dewatering and treatment

Walsh Atkinson JV Walsh managing partner Easterly Tunnel

25 Nov 2014 Building the Easterly Tunnel Dewatering Pump Station During the rain or flood high water situation currently the treatment plant can 39 t handle the excess water explains Charles Weitzel Project Manager at The Walsh Group When they can 39 t handle it they have to bypass it right into the lake

CSO Pre Design Report Consolidated Storage Tunnel Atlanta

2 May 2002 convey flow into and lift flow out of the storage tunnel systems as well provide a location for centralized solids collection within each tunnel system A 100 mgd dewatering pump station is proposed to lift stored flow approximately 200 feet from the West Area Tunnel to the dedicated CSO treatment plant

New East Side sewage pump station nearing completion will

24 May 2016 The Easterly Tunnel Dewatering Pump Station is a key component of Project Clean Lake the Northeast Ohio Regional Sewer District 39 s 3 billion master plan to drastically New East Side sewage pump station nearing completion will transport millions of gallons of liquid waste to treatment facility photos

Easterly Tunnel Dewatering Pump Station Walsh Group

The Northeast Ohio Regional Sewer District faced an overflow of roughly 4 billion gallons of untreated water into Lake Erie every year This project included the excavation and construction of a cavern style pump station connected to a 3 mile long single pass precast concrete lined storage tunnel that significantly reduces nbsp

Treatment Shaft Process Wastewater Technologies LLC

Process Wastewater Technologies and Applied Engineering Technologies AET have partnered together to develop a fully automated patented treatment shaft Small footprint occupies less than 15 of the area of traditional surface storage systems Lower capital cost about 2 3 the cost of tunnels or basins Simple nbsp

Groundwater Management for Metro Construction in Copenhagen

Copenhagen Haren Ems XX XX 2015 – Copenhagen is currently building a 15 5 km long new Metro line which is expected to open in 2018 In order to construct the tunnel system with 17 underground stations and four special structures sophisticated and precise monitoring and controlling mechanisms are required

Mobile dewatering and filtration system allows tunneling contractor

Two mobile systems provided 200 GPM each on two trailers that were able to move with the progression of the tunneling Three submersible dewatering pumps powered by generators were used to provide the deep well dewatering The systems used a combination of Oil Water Separators Weir Tanks Cartridge and nbsp

Pumping and Filtration Techniques

Common Contaminants Sediment TSS turbidity VOC 39 s hydrocarbons plume migration Metals – Iron zinc manganese PH concrete work Common Sources Trench Sump Pumping Tunneling Process Water Positive Dewatering Remediation pump treat AquatechDewatering com nbsp

Dewatering for Tunnels and Shafts Groundwater Engineering

This is sometimes used when a TBM designed for relatively stable soils present over most of the tunnel length has to traverse a short section of alluvial or glacial soils which may be present in a buried channel or other geological feature Dewatering to control groundwater velocities to allow use of ground treatment methods nbsp

5 Solutions for Dewatering Tunnels and Shafts MWI Pumps

Not quite yet You 39 ve selected the right dewatering process for your tunnel and the groundwater is out of your way But now you 39 ve got to dispose of it And if you 39 ve used sump pumps this water will need to be treated to remove the solids Know the local environmental rules and regulations about discharging water before nbsp

Tunnel Dewatering Pump Station and Enhanced Clarification

In 2018 when the Blue Plains Tunnel is brought online the Tunnel Dewatering Pump Station TDPS and Enhanced Clarification Facility ECF will accept the millions of gallons of combined sewage that previously flowed into the District 39 s waterways during heavy rain storms That flow will now receive treatment Principal nbsp

Storm Water Tunnel Systems and DC Water Enhanced Clarification

5 Aug 2015 DC Water Enhanced Clarification Facility ECF ▫ Wet Weather System ▫ Two deep shafts will serve the main Tunnel Dewatering Pumping Station TDPS ▫ Surge and Screen Chamber ▫ Main Pump Station ▫ The TDPS pumps flow from the tunnel to the ECF ▫ The ECF designed for 225 mgd of treatment nbsp

Tunnel Dewatering Pump Station and Enhanced Clarification Facility

GES provided mechanical plumbing fire protection and process engineering for the new Tunnel Dewatering Pump Station TDPS and Enhanced Clarification Facility ECF GES is part of the PC Construction CDM Smith Joint Venture which brings together the industry leading expertise in water treatment facility design nbsp

Easterly Tunnel Dewatering Pump Station Atkinson Construction

The TDPS will provide the means to entirely dewater the storage tunnel system at the end of each wet weather event and pump combined sewage to the Easterly Interceptor for transport to the Easterly Wastewater Treatment Plant In addition sump pumps remove infiltrated groundwater and on site generated wastewater nbsp

Seal Water System Supplied To Easterly Tunnel Dewatering Pump

25 Apr 2016 North America faces significant environmental challenges due to population growth and our aging infrastructure The need to improve sanitary sewer facilities includes transportation via pipelines or tunnel conveyances for new and upgraded wastewater treatment plants and the mitigation of combined nbsp

Project Dewatering Dewatering Services UK amp Ireland

As the UK 39 s division of Europe 39 s Largest dewatering contractor PDL offers professional cost effective solutions to all of your groundwater needs

Project Dewatering Remediation amp Treatment Groundwater

Remediation and Treatment Groundwater Treatment of groundwater is carried out in order to improve water quality when dealing with an aquifer where there is legacy contamination This is carried out either as aquifer and ground remediation or in conjunction with dewatering operations to ensure water is suitably clean nbsp

A Capital Project Storm Water Solutions

The solution is the Tunnel Dewatering Pump Station TDPS and Enhanced Clarification Facility ECF a coupled pair of facilities able to handle the wet weather CSO flow apart from the plant 39 s main wastewater treatment processes DC Water awarded the 215 million design build contract for the TDPS ECF project to the nbsp

Blog Dewatering for Tunnels and Shafts Groundwater Engineering

3 Dec 2015 Pumped well dewatering to control groundwater velocities to allow use of ground treatment methods such as artificial ground freezing or grouting in problematic conditions Tunnels themselves also present conditions when the tunnel is successfully excavated and lined below groundwater level without nbsp

Dewatering Sludge From Tunneling Aggregates amp Mining

Our high performance decanter centrifuges perform in demanding applications including dewatering sludge and mud from tunneling well drilling quarries and After having passed through the normal mechanical treatment the discarded slurry is fed to a decanter centrifuge system for separation and dewatering of the nbsp

10 0 recommended plan for 2026 Alcosan

Station and a new 120 mgd regional tunnel dewatering pump station capable of dewatering the tunnel within 48 hours All flows will receive primary treatment and disinfection and flows up to 295 mgd will also receive secondary treatment prior to disinfection ALCOSAN 39 s Recommended 2026 Plan will provide major water nbsp

Project Description Virginia DEQ

treatment process until the tunnel is dewatered Working within the existing plant capacity results in a significant cost savings The ENR upgrades and supporting projects include Enhanced Clarification Facility E800 which will treat excess flow during wet weather events The dewatering pumping station will discharge nbsp

PC Construction Company Blog Tunnel Dewatering Pumps Make

18 Aug 2016 Five large tunnel dewatering pumps have been delivered to the Blue Plains Advanced Wastewater Treatment Plant for installation on the Tunnel Dewatering Pump Station and Enhanced Clarification project under construction by the PC Construction CDM Smith joint venture Each pump is powered by a nbsp

Nicholson Begins Work on Dugway Storage Tunnel in Ohio

19 May 2016 The 24 foot diameter tunnel will be 180 to 230 feet below ground surface and stretch 2 8 miles from the Easterly Tunnel Dewatering Pump Station ETDPS to its Upon completion the combined Dugway Storage and Euclid Creek Tunnels will allow the Sewer District to store and treat 110 million gallons of nbsp