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Sewer Condition Articles & Analysis
45 articles found
A successful sewer inspection starts well before the sewer camera is inserted into the network. ...
Among the most important tools to ensure rigorous monitoring of the condition of sewer manholes, the MACP (Manhole Assessment and Certification Program), developed by NASSCO, is today the reference standard in North America. Among the different coding levels, MACP Level 2 stands out as the most complete and detailed assessment, used to gain an in-depth ...
Buying or maintaining a property can be stressful enough without the added surprise of a failed sewer inspection. Whether you’re a real estate professional, property manager, or home inspector, discovering underground issues can delay sales, increase costs, and frustrate clients. That’s why having the right plumbing borescope can make all the difference. With a borescope, you can ...
Sewer line issues are a common problem for homeowners and commercial property managers alike. From slow drains to backups and leaks, knowing the exact condition of your sewer line can save you time, money, and headaches. One of the most effective ways to diagnose these issues is by using a sewer camera inspection. But many people ...
Sewer cameras should be cleaned regularly to prevent damage, ensure good hygiene, and ensure that it’s ready to go when needed. Clean your sewer camera system after each use to keep it in good condition. Sewer cameras will naturally become dirty due to the environments that they are exposed to. ...
Problem: The Town of Oakland, Maine has approximately 11.6 miles of gravity sewer piping, 52% of which is newer PVC pipe, with the remainder including a mix of clay, transite and fiberglass pipe. With only 800 mostly residential customers, and limited budget for maintenance, the Town needed a means to prioritize the cleaning and CCTV inspection of the collection system piping. Historically, the ...
The effluent treatment plant was designed to treat effluent water quality from the new truck wash facility to a sufficiently high standard prior to discharge to sewer. The facility allows for the wash-down of cattle trucks but also vehicles from the coal seam gas and mining industries. ...
Fatbergs, massive accretions of grease and debris, are a big problem in sewers, but decentralized and sustainable solutions have been proposed It weighed as much as a blue whale and was even longer, but Londoners didn’t realize it was lurking beneath their streets until ancient sewer tunnels backed up. ...
The most reliable and affordable solutions for pumping wastewater and sewer into an existing pressure sewer system will utilize Variable Frequency Drives, also called VFDs. ...
May proposed two dimensionless parameters of transport (η) and mobility (Fs) for self-cleansing design of sewers with deposited bed condition. The relationships between those two parameters were introduced in conditional form for specific ranges of Fs, which makes it difficult to use as a practical tool for sewer design. ...
The presence of dissolved oxygen (DO) in water flows is an important factor to ensure the aerobic conditions recognised as beneficial to preventing the occurrence of detrimental effects. The incorporation of DO in wastewater flowing in sewer systems is a process widely investigated in order to quantify the effect of continuous reaeration through the ...
Regular sewer cleaning in North Rhine-Westphalia (Germany) generates annual costs of around 50 million Euros. This leads to the question of whether and to what extent sewer cleaning is necessary. To determine the effect of roughness, sewer surface condition and discharge, experiments with real wastewater were performed, using ...
The field campaign was conducted because of a lack of knowledge about the general condition of the pressure main due to its bad accessibility and the suspicion of deposits caused by hydraulic underload. ...
H2S emission dynamics in sewers are conditioned by the mass transfer coefficient at the interface. ...
The presence and fate of hydrogen sulfide in wastewater systems were studied in two stretches of an intercepting sewer system located in a coastal village, in Portugal. A range of hydraulic parameters were obtained and liquid and gas phase measurements were carried out, both continuously and through intensive sampling campaigns. Upstream, where flow rates were relatively low, dissolved ...
As urban sewer infrastructures age, it becomes increasingly important to make effective decisions to maintain the structural condition of the sewers at an acceptable level. To support the decision-making process, the utility manager can apply sewer deterioration models. However, the quality of the decision support from such ...
Conditions requiring any additional action are coordinated with the Pearl River maintenance staff. ...
However, the specific biochemical processes in the sewer collection system depend on the sewer environment (i.e., aerobic/anoxic/anaerobic conditions in bulk water/biofilm/biofilm-sediment phases, and the sewer atmosphere). In-Pipe Technology (IPT) employs sewer collection system bioaugmentation treatment to ...
The soil bacteria that are introduced through inflow and infiltration are more effective at degrading the wastes and can contribute to stabilizing the downstream wastewater treatment process; however, the flux of these organisms into the sewer system Ls not enough to contribute to significant degradation in the sewer system under normal ...
Sewer biofilms play an important role in the biotransformation of substances for methane and sulfide emission in sewer networks. The dynamic flows and the particular shear stress in sewers are the key factors determining the growth of the sewer biofilm. ...