Sewage Water Recycling Ideas Sewage Water Recycling Ideas
Overcoming the idea that sewage water is bad is not an easy task. Nevertheless, in a time when the nation's water resources have beome precious or in jeopardy, new techniques to reuse sewage water have gained ground. Here is an overview of some of these new ideas.
Turning Sewage Water into Drinking Water
This one isn't truly do-it-yourself, but in Orange County, California, the water district is purifying sewage water(wastewater) into drinking water at a $481 million recycling plant. Using microfiltration, reverse osmosis, ultraviolet light and hydrogen peroxide disinfection, some 70 million gallons of sewage water is treated daily. That’s enough to meet the water-drinking needs of 500,000 people – including Disneyland visitors.
The process actually takes pre-treated sewage water and runs it through a three-step cleansing process. This process is essentially the same technology as that used to purify bottled water and baby food. Thousands of microfilters strain out bacteria, suspended solids and other materials. The water then passes through a reverse osmosis system to filter out smaller particles. This essentially the same process as used in desalinization. The water is then disinfected, and the result is drinking water that exceeds all U.S. drinking standards. It also receives additional filtration when it is allowed to percolate back into the ground to replenish the aquifer.
Singapore Utilities Purify Sewage Water
Utilities in Singapore reclaim sewage water (brand name NEWater) by purifying the treated wastewater with dual membrane (also using microfiltration and reverse osmosis) and ultraviolet technologies, as well as conventional water treatment processes.
Since older buildings in the city lack double plumbing, the sewage is carried out to the utilities for treatment and purification. It is then pumped back into the homes and is consumed by the population.
Sewage Water Sludge Used As Fertilizer
Sewage sludge, an end product in the wastewater treatment process, is the raw material for fertilizer that provides nutrients to the soil. The nutrient value of the sludge may vary from source to source, based on treatment processes, origin, types and quantities of wastewater treated.
Milorganite Lawn and Garden Products
What starts off as sewage water eventually ends up in the gardens, on golf courses and lawns all across America - in the form of Milorganite Lawn & Garden Products, made in Milwaukee, Wisconsin. The transformation involves a four-stage process: screening, settling, secondary treatment and disinfection. Available at lawn and garden centers, Milorganite, according to the company, is “America’s #1 organic nitrogen fertilizer.” The product meets the U.S. EPA’s “Exceptional Quality” criteria and is safe to use on vegetables and other edible crops in the garden. It’s even safe if your dog eats it.