BASIC DESIGN OF POND OR SURFACE WATER HOUSEHOLD WHOLE HOUSE DRINKING WATER TREATMENT SYSTEMS USING CHLORINE OR IODINE AS THE DISINFECTON METHOD

Our systems are designed to provide a continuous, whole-house, supply of bacterially safe drinking water from a pond, rainwater cistern, or spring. The treatment cycle consists of five basic elements:

(This article does not include the design of the pumping and pressurized storage system. The pumping system is usually unique to the job relating to gallon per minute requirements and pumping lift and distance layouts. We can work with your individual circumstances to design this part of the system.)

  • 1. Source Control and Rough Filtration. Drawing water through a Floating Pond Filter at a level approximately 18” below the water surface provides the start for the cleanest possible water for treatment.
  • 2. Chlorination or Iodination. Immediately after the pump and pressure tank, the water supply is chlorinated/iodinated using an automatic injection chlorinator or a flow through iodination. The chlorinator/iodination units place a specified amount of disinfectant directly into the pressurized water line each time the water pump runs. The system is easily adjusted to achieve the proper chlorine/iodine level.
  • 3. Retention. A large 120 fiberglass retention tank allow the chlorine to evenly mix with the raw water. The tanks are sized to provide a minimum of 30 minutes contact time with the chlorine iodine. A 30 minute contact time with the proper dose of chlorine ensures a thorough disinfection of the water supply.
  • 4. Sand/Carbon Filtration. (optional on rainwater cisterns) After the retention tank, the disinfected water enters a pressurized, automatic back flushing sand and carbon filter. This filter reduces any remaining suspended solids and unwanted organics/tastes and odors from the water supply. The treated water is then plumbed into the main water system.
  • 5. One Micron Step Down Cyst Filtration. Cyst and Giardia are not effectively dealt with by chlorine and iodine. By adding a 10-5-1 micron step down cartridge filtration system at the end of the filtration system we can physically remove the unwanted microorganisms if present.

WHAT ARE THE SYSTEM CAPACITIES AND MAINTENANCE?

Typical flow rate for household use is 10 gallons per minute. These systems can be sized to accommodate any required flow rate. Maintenance involves changing the replaceable filter element(s) in the Floating Filter, and refilling the chlorine/iodine solution tank. Every three to five years if a carbon filter is utilized the carbon bed should be replaced.

These systems and their designs change on occasion as dictated by the Ohio Department of Health. Always make sure your contractor is approved and bonded by the Ohio Department of Health and is a Registered Private Water Systems Contractor. Flag City Water Systems is a registered contractor.


Pond Water Source: Water Treatment System with Floating Pond Filter

whole house surface water treatment system diagram

whole house surface treatment system design blueprint