Modular Water Systems Salvages A Stranded Community
No Local Facility, Left No Place to Discharge Overflowing Septic Waste
THE PROBLEM
Because the county of Mc Dowell had no sewer system and homes in the county relied on septic tanks to treat their waste but there was no local facility to treat the waste from the septic tanks, wastewater was being discharged into creeks and in other non-optimal ways. Resultantly, a grant was approved by the state’s EPA to fund a waste water treatment (WWT) system for Coalwood.
THE SOLUTION
Modular Water Systems (MWS) was approached by a Consulting Engineering Firm working for the Town of Coalwood to design a new standalone wastewater treatment solution. This decentralized, wastewater treatment plant needed to meet three primary selection criteria:
- Sufficient treatment capacity to support the small town.
- Durability – the system must have an extremely long life cycle.
- Fast and efficient site installation
The EveraTREAT system designed by MWS (as led by Daniel Early, PE, Chief Engineer), using structural polypropylene (SPP) panels excelled in all these aspects, tipping the decision scales by offering numerous advantages over conventional materials – concrete and steel based construction.
THE RESULT
With the system fully commissioned by May 2023, everyone involved in the project, from the engineering and construction partners to the end-users, expressed satisfaction and enthusiasm upon its completion, which took less than four months from conceptualization to final installation and start-up. As Daniel Early observed, “This project speaks to the design and performance benefits of structural panels in creating viable, durable, and environmentally friendly decentralized WWT plants, particularly when coupled with innovative engineering and professional fabrication and installation execution.”
DIRECT ONSITE FEEDBACK
EFFORTLESS INSTALLATION
The MWS pre-fabricated system, crafted from structural panels, is remarkably easy to transport, despite its capacity of 17,500 gallons per day, thanks to its lightweight and rugged design. Moreover, the ingenious engineering behind the EveraTREAT plug and play system minimizes the need for specialized tradespeople such as plumbers, electricians, and concrete specialists during installation, thereby expediting the entire process. To put it in perspective, the West Virginia project required only one-third of the usual installation time, as confirmed by the general contractor overseeing the project, resulting in substantial cost savings.
EXCEPTIONAL LONGEVITY
Daniel Early and his colleagues determined that the EveraTREAT systems can operate as much as three to four times longer than traditional concrete or metal WWT systems, significantly reducing the overall cost of ownership. With a WWT plant capable of lasting up to 100 years, end-users can rest assured that their long-term needs are met without hidden maintenance and reconstruction costs or hassle. Not to mention, the system downtime and backup system costs during such maintenance and renewals.
MEETING EFFLUENT STANDARDS
Based upon the effluent standards required, the EveraTreat has a capacity of 17,500 gallons per day and employs Moving Bed Biofilm Reactor (MBBR) technology for the best results. The system is designed to treat the specified influent flow rate and organic loading to produce an effluent that meets and exceeds the maximum stipulated effluent conditions. This table reflects Coalwood’s influent data and the specified effluent requirement
| Constituent | Influent | Effluent (max) |
| Flow Rate | 17,500 GPD (ADF) | – |
| BODS | 350 mg/L | <20 mg/L |
| TSS | 350 mg/L | <30 mg/L |
| TKN | 50 mg/L | <3.5 mg/L (TN) |
| Phosphorous | 10 mg/L | <4 |
| pH | 6.5 to 8.5 | 6.5 to 8.5 |
| Fats. Oils, Grease | <10 mg/L | NA |
| Water Temperature | 40 F to 95F | <105F |
GPD-Gallons Per Day , ADF-Average Daily Flow
BOD-Biological Oxygen Demand is a measurement of the amount of dissolved oxygen (DO) that is used by aerobic microorganisms when decomposing organic matter in water. When BOD levels are high, dissolved oxygen levels decrease because the oxygen that is available in the water is being consumed by the bacteria.
TSS-Total Suspended Solids is the dry-weight of suspended particles, that are not dissolved, in a sample of water that can be trapped by a filter that is analyzed using a filtration apparatus.
TKN-Total Kjedhal Nitrogen is the U.S. EPA-approved parameter used to measure organic nitrogen and ammonia.
TN–Total Nitrogen. The total amount of nitrogen in water, including ammonia, ammonium salts, nitrites, nitrates, and organic nitrogen compounds.
OPERATOR TRAINING
Using modern PLC (Programmable Logic Controllers) and HMI (Human Machine Interface) technology along with detailed and comprehensive operation manuals, made the operator training on the system, very quick and simple.
GROWTH OUTSTRIPPING CAPACITY
Due to the rapid growth in many areas of the USA, town and city supplied utilities simply can’t keep up with or meet the sewer demands of the sprawling new townships being developed. In already developed rural areas, such as Coalwood, millions of older systems, especially those with many years where proper service and maintenance have been neglected, are failing or on the verge. As a result, centralized solutions like a piped sewerage system are highly impractical, and present a costly and time-consuming obstacle, so residences in outlying areas are having to resort to septic tank-based systems, with no local government facility to process the resultant wastewater.
CONCLUSION
The MWS EveraTREAT system is the ideal product application and infrastructure solution to supplement both new off-grid development projects as well as aging and underserved community septic systems. In the case of Coalwood, the design not only met and exceeded the customer’s requirements in all respects, but has handled an entire community’s wastewater requirements.
Coalwood is only one of many other such communities Modular Water Systems has helped to gain independent, self-sufficient wastewater security. With an estimated 50% of the more than 21 million septic systems in the US aging and not functioning properly the demand for onsite, point of use wastewater solutions and treatment has never been greater. The Modular Water Systems product lines are designed to be scaled and deployed rapidly enough to meet that demand.
COALWOOD TOWNSHIP
HISTORICAL INTEREST
