Evaluation of the Use of Iodine or Disinfection of Effluent from On-Site Package Wastewater Treatment Systems - A Paper in Environmental Pollution Control

摘要

Iodine was shown to be a feasible alternative as an agent for the disinfection of wastewater effluent from small 'package' wastewater treatment systems. The primary advantage associated with the use of an iodine crystal column iodinator rather than an erodible chlorine tablet system for wastewater effluent disinfection is the longer intervals between disinfection agent replenishment for the iodine unit. The estimated additional cost to the user is $6.33 per month for the disinfection of effluent from a single-family wastewater treatment unit. Contact tank design and the degree of treatment prior to disinfection can affect greatly the performance of the crystal column iodinator as well as the rate of iodine consumption. If the wastewater is to be used for the dissolution of the iodine crystals, it should first be passed through a sand filter. The recommended ratio of wastewater effluent flow to clear water flow is approximately 30:1 in order to provide for sufficient dissolution of iodine.