ESI - Rain Harvest to Potable System

Collected water either from rain or from distribution sources that need further treatment are collected in the first collection tank(s) which have 4,000- to 12,000-gallon capacity. The water in the tanks are initially treated with ozone to start the treatment and disinfection process. From there that tank is plumbed into the treatment and off grid power skid. The first stage of treatment is through a coconut shell carbon absorber and then through a .35-micron absolute pleated filter housing. From there the treated water is held in a sealed polypropylene tank. As water is required from the distribution point of the system, pressure in the final treated water bladder tank is plumbed through a chlorine injection vessel to provide .5 to 1.5 mg/L of residual chlorine in the water. When pressure drops to a predetermined set point in the bladder tank a multistage booster pump is activated and water from the treated water storage tank is pressurized and the bladder tank is re-filled.

The entire system is powered by an off grid solar system with large backup battery storage system and pure sinewave inverter system that provides continuous power to the treatment system control and telemetry system. The power generation system can also accept shore power or generator power as a backup to keep the batteries charged and the system running if required. These systems are equipped with advanced remote monitoring systems connected to the Internet via GPRS cellular modems, with all remote access and control for service support by Enviremedial services and tracking of the entire system for the end user. Parameters such a filter status, carbon status, chlorine levels, tank levels, flow, totals and many other parameters are tracked on the telemetry system. Graphing and trending are also readily available via the web interface.

Depending on feed water other pre-treatment or post treatment modules can be added to the system to ensure excellent water quality for feed a facility or distribution points in a disaster area.

• The system is designed for on-demand operation with single pass treatment. This allows for operation for multiple days where solar generation is low, and no shore or generator power is available.
• First flush technology to clear and rinse roof surfaces / gutters of debris and other pollutants for collection in the 1st stage tank. 
• Remote Telemetry: Remote Telemetry alerts ESI service personnel of any out-of-normal parameters. This feature is instrumental in the achievement of 99% uptime for all our rain harvest systems. Oftentimes, issues with the system can be diagnosed and corrected via the Internet saving the cost of service calls and time lost while a wash rack is non-operational.
• Maintenance and operation of these systems are very easy and consumable materials are available from a wide range of sources, to ensure the system can be serviced and operated.
• Transportable and Re-locatable: The ESI Rain Harvest System is fully transportable when relocation is required.
• ESI provides monthly or quarterly preventative maintenance and inspection services by certified, trained technicians.
• Systems are configured in a variety of ways depending on the mission. They can be built in to ISO shipping containers, deployable containers of various types specified by the customer, and self-contained skids such as shown above or containerized systems.