Due to results from a sanitary sewer evaluation of the Nebraska DEQ, the Papio Branch water treatment plant’s (WTP) must place a permanent flow meter at the site of the discharge point where flow is outputting to the reservoir.
The discharge (decant flow) flow in the pipe varies from continuous to intermittent through the 10-inch gravity ductile iron pipe that is a free fall discharge into the reservoir. The discharge point is a concrete headwall where the Doppler wave meter will be placed permanently.
A temporary Teledyne Isco 2150 flow meter was placed at the site of the discharge for a period of 24 hours to determine the performance of a meter at the site as well as evaluate current flow conditions. The temporary metering was
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Figure 2: Teledyne Isco Signature Flow Meter Diagram
The basics needed in order to install the area velocity signature meter are the meter module, a cable, probe, band, screws/mounting devices, power supply, and outputs. The prices listed below are quotes from a Teledyne Isco sales representative.
• Signature Area Velocity flow meter system: starts at $3,700 o This includes the meter, the sensor, a 32.8 foot cable, a manual, and a pocket guide. The price may change if other options are added.
• Sensor carrier for attachment to the mounting rings: $50
• Spring Ring for a 10-inch pipe: $91
• 8 foot power cord: $25
• Analog 4-20mA output with two channels: $310
• Internal seven digit mechanical totalizer: $115 o Total (minimum for all listed options): $4,291
If the pipe has silting or ragging issues, then a Laser Flow Meter should be used instead of the Area Velocity meter. The Laser Flow meter is a non-contact Doppler meter that provides all of the same information as the area velocity meter without having a sensor in the water. The benefit of this would be if the pipe has ragging issues or there is a lot of silting/debris that could potentially get stuck on the probe and cause the probe to not read the way it should be. This is a much more expensive option it would provide data without the worry of silt/debris or ragging of the pipe getting in the way. Costs for this type of meter are listed below.
• Signature Laser Flow meter system: starts at $9,750 o This includes
What buret reading should you record when the liquid level is as shown in Figure 2?
The new PLC is located in the Mt Crosby East Bank control room with a new fibre optic cable network installed currently connecting it to the new alum dosing RIO panel and the sedimentation basin 2 RIO panel. In the future this PLC and fibre optic cable network has the capacity to connect all chemical systems and sludge RIO panels installed as part of future upgrade projects.
DrainFlow has been a key player in the plumbing service industry since the 1960’s providing commercial plumbing maintenance and residential plumbing maintenance throughout the United States.
DISCUSSION: Mike Jones, Director, Tuscarawas County Metropolitan Sewer District (TCMSD) was present to discuss upcoming applications with the Ohio Public Works Commission (OPWC). Mr. Jones discussed the Zoarville Waterline Transmission Project. The Zoarville Waterworks company currently operates a small water system that serves about 53 customers in the unincorporated community of Zoarville. Earlier this year, Mr. Jones was approached by the Zoarville Waterworks to discuss the possibility of turning their system over to TCMSD for continued operation, ownership and maintenance. After the initial meeting with Zoarville he met with members of their board and the Ohio EPA to discuss it further. The Ohio EPA in a follow up letter from that meeting indicated they were supportive of this arrangement and also indicated it would be in the best interest of both parties to pursue this matter. Currently, the TCMSD is in the process of developing an agreement for such an arrangement. The TCMSD also has a letter of intent from the Zoarville Board of Trustees indicating their desire to transfer their system to the TCMSD. Mr. Jones indicated that in order to do this they need to extend the 8” waterline to Zoarville. The estimated project cost for extension is $520,000.00. Mr. Jones proposal is to submit $228,000.00 in grant application with the balance a combination of a 0% 20-year loan and local share on any type of services TCMSD would provide. The user charges for the new
Both the orifice and the Venturi meters produce a restriction in the flow and measure the pressure drop across the meter. The velocity of a fluid is expected to increase as the fluid flows from an open area, to a more constricted area. Assuming incompressible flow, a negligible height change, and steady state, Bernoulli’s equation can be simplified to show the correlation between the volumetric flow rate and the pressure drop. The equation for both meters is as follows:
Your provider must also supply you with everything needed to run the system successfully. Such items include: inverter, batteries (for backup power), and the electric meter that is in accordance with your local utility company. The home's old power meter must be replaced to allow for net metering. Some installations require two meters. One meter would track the outgoing energy while the other would track energy coming in from the grid.
As previously mentioned in Section 1, Project Area #2 is located along White Oak Bayou on the Northwest corner of the 610 North Loop within the City’s Wastewater Collection Basin known as Basin No. IA041. Within this wastewater collection basin, a portion of the sanitary flows are conveyed from the eastern side of White Oak Bayou to major collection sewers located on the western side via three (3) siphon crossings beneath the bayou. This project is specifically concern with the most northern of the three siphon crossings. At this location, the siphon crossing consist of two cast-iron pipes (6-inch and 8-inch diameter) that cross White Oak Bayou just north of highway 610 North Loop. The influent manhole for siphon
Concerned about the sewage line that runs from the industry to Ware Shoals and the odor that comes from every single manhole cover from there to Ware Shoals and the residents that live in front of those manhole covers. These residents are not able to sit on their porch in the morning to enjoy a cup of coffee because of the smell of raw sewage coming from the manhole
Groundwater is an important natural resource that many communities, companies, and ecosystems depend on. Although, it is classified as a renewable resource, its supply is not unlimited. Groundwater has a yearly recharge rate that varies around an average from year to year. Having an idea or estimate of the recharge rate is necessary to define the limits of what can be withdrawn from an aquifer without causing an unacceptable decrease in long-term discharge rates. The objective of this study is estimate the recharge and discharge rates of the West Nose Creek Watershed and determine how groundwater extraction through pumping affects these
6. The outflow rate is measured by using a measuring cylinder. It is measured 3 times and averaged for a more accurate result. The results are shown in Table 2.
Sewer Rear south east corner Stormwater
Inflow from the tank was calculated using the known internal dimensions of the tank, the % full reading, and the time step which the data was collected.
a) Transfer pipette was obtained. The pipette was cleaned because distilled water does not drain uniformly. A cleaning solution or detergent was used to clean the pipette.
The report finds BOD levels meet the National Pollutant Discharge Elimination System (NPDES) permit renewal standards. Results for suspended solids shows an opposite trend. Suspended solids increase throughout the course of the water treatment. This does not meet NPDES standards. Further suspended solids test will be needed to insure a minimal amount of error. If the same trend continues, the facility may need to be redesigned to meet NPDES standards.
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