We have many full-scale wastewater
recovery system for greenhouses. In such applications, our ozonation systems are used for
the complete elimination of bacteria, viruses, fungi, spores and parasites, as well as
for the removal of organic waste. The ozonated water contains increased levels of
oxygen which is desirable for the prevention of anaerobic pathogen growth on plant
roots.
There are hardly two identical horticulture operations in the world. Application
specialists at O3 Water Systems are ready to review and utilize your existing
equipment (such as aeration tanks, pumps, filters and buildings), to be fitted for the new
purpose, or to design a brand new system.
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The water treatment systems are engineered for fully automatic and worry-free
operation. Many features are included to prevent ozone overdose — achieving no
overdose risk even if a part of the system were to fail. The risk of insufficient water
treatment is minimized by the modularity of the system; where there is always at least one
spare module. An alarm system will provide information about what needs to be done to
rectify a failure of any kind.
The ozone generators must be installed in a well ventilated and dust-free room. In most
cases only a few square feet of floor space are needed. Detailed instructions for
installation and operation will be provided after the system is specified and ordered. The
systems are fully automatic and easy to operate and maintain. The overall warranty is for
three years excluding the pumps — where the original factory warranty is usually on
year.
The wastewater recovery system incorporates two storage tanks, typically 100m3
each. The ozone controller will treat one tank which is being supplied with the water
returning from the greenhouse. The second tank serves as the recycled water supply.
Typically, 50% of the plant food is recovered. When the treatment of the first tank is
completed, water is left to sit for a few hours until all residual ozone is reduced to
oxygen. Then the tanks are switched automatically. The second tank now collects and treats
water from the greenhouse while the first tank supplies water to the plants.
All of the wastewater is recovered, there is no discharge of any kind. The water
savings range between 20% to 90% — depending on the greenhouse operation and the
season.
Complete systems for makeup water treatment are also available, engineered to
fit any size of operation. The slightest amounts of iron, manganese, bacteria, organics or
other oxidizable materials will plug the capillaries in the hydroponic water distribution.
Chlorination is not an option because it forms very toxic chloro-organic compounds known
as THMs. De-chlorination is not completely effective for removing the THMs, and subsequent
discharge into the soil would ultimately lead to contamination of the ground water. In
recirculation systems, the THMs would accumulate and poison the plants.
Our systems for makeup water are totally nontoxic and the only byproduct created is
oxygen. Based on your water analysis, O3 Water
Systems will propose the proper ozonation system size — including the filters,
contact tanks and biofiltration, if necessary. We make our comprehensive calculation is
simple enough to understand so as to demonstrate that O3 Water Systems' applies only the
most economical and reliable solution to the water problem.
1. All water is recycled, sewer charges are virtually eliminated. Only in the case of
elevated salt content due to extensive evaporation, a blow down may be required, usually
only after many months of operation.
2. Up to 50% of otherwise lost nutrition is recovered and returned back to the feed
operation system.
3. All fungi, viruses, bacteria and parasites are eliminated.
4. The makeup water demand is greatly reduced.
