TOPICAL TREATMENT :
Using BAT 505 NTX, 507 HC,
and 508 NTX
Perhaps the easiest to perform and easiest to appreciate method of odour control is surface contact treatment. Something smells. You spray it. It doesn’t smell anymore. This is to be distinguished from spraying something into the surrounding air to temporarily relieve the symptoms (the odours) rather than to actually impact the source of those symptoms.
In those situations where it is applicable, topical treatment is quick and cost effective, and will require far less frequent applications than air contact. Take, for example, the case of a typical outdoor composting operation. If the facility attempts to utilize air contact, it may need to deal with an entire perimeter of atomising nozzles, and these nozzles may need to spray continuously, or at least regularly through several hours of the day. Certainly, it is possible to place atomising nozzles on a row turner, but this will only work when all the odour problems occur from the rows during turning. Air contact during turning will not impact non-turning row odours blown off-site with the wind or creeping into the surrounding areas during temperature inversions, nor will it impact any odour caused by leachate collection or ponding.
On the other hand, a topical deodoriser need be applied only to the trouble spots, and only when those spots are actually causing trouble. The topical may be sprayed from nozzles on a row turner during turning, or it may be applied with any spray equipment at any time it is needed. The surface of a pond or pool may be sprayed as easily and effectively as the surface of a windrow. Additionally, where atomisation may need to be repeated every few seconds (because it deals with odours after they have off-gassed), the topical deodoriser will last hours and sometimes days with a single treatment because it directly impacts the levels and occurrence of off-gassing.
