Envco – Environmental Equipment

O-SOX™ is a delivery mechanism consisting of a fabric sleeve (or sock) filled with EHC-O™ and a stainless steel canister. For ease of use in groundwater wells, the socks are lowered in the well inside reusable stainless steel canisters. The number of canisters that can be hooked together is limited and governed by well screen length, weight, and the fact that they all need to be submerged.

Benefits of O-Sox™ Delivery System
❖ All the field proven benefits of EHC-O.
❖ Substantial time savings in the field.
❖ Reusable stainless steel canisters are easy to insert in and retrieve from the well.

Recover the cost of the canister in your first installation!
❖ Ease of determining the exact depth at which the product is deployed.
❖ Socks and canisters available for 2” and 4” wells.
❖ Up to three canisters may be suspended in line to lengthen the active zone.
❖ Even distribution of the active material over the length of the canister(s) because the socks do not collapse or bunch up.

EHC-O™ O-Sox™ FAQs
1. What are the main differences between O-Sox and comparable market alternatives?
EHC-O O-SOX contains a well-buffered source of controlled release oxygen plus inorganic nutrients (mainly nitrogen) that can accelerate the biodegradation of various organic compounds and enhance certain natural attenuation processes. In addition, the O-SOX technology is a superbly well designed stainless steel canister and sleeve system which greatly simplifies installation, removal and replacement.

2. Do I need microbial inoculants?
In most cases, the naturally occurring (indigenous) microorganisms are well adapted to the organic constituents of interest and inoculants are not required.

3. What contaminants are amenable to O-Sox treatment?
The rate and extent of removal of all organic compounds that are biodegraded under aerobic conditions are usually enhanced via the addition of oxygen and inorganic nutrients. Petroleum-based aromatic (e.g., benzene, toluene, xylene, phenol) and aliphatic hydrocarbon mixtures (e.g., gasoline, heating oil, Diesel fuel, jet fuel, kerosene) are primarily targets; lightly chlorinated ethenes (vinyl chloride), MTBE, dioxane, pentachlorophenol, and many other compounds are also potentially amenable to O-Sox treatment.

4. How much do they cost?
O-SOX cost about 25% less than market alternatives.

5. Why should I use the O-Sox technology?
It’s a better product. And the superior design and ease of application will immediately translate into greatly reduced field time and frustration = reduced project cost.

6. Is it easy to switch over to the O-Sox technology?
Yes. EHC-O has been accepted by many state regulatory authorities and it has been employed throughout the USA and Europe.

7. How long do they last?
O-SOX are typically replaced every 3 to 6 months. Various site-specific factors will influence the effective lifetime of the O-SOX cartridge; mainly i) constituent type and concentration, and ii) hydrogeological features (groundwater flow rate, Eh, pH, temperature).

8. Do I need to install new wells?
No. The O-SOX technology is designed to fit into standard 2-inch and 4-inch diameter groundwater monitoring wells. The canisters have a nominal outside diameter of 1.75 inches for the 2-inch size and 3.5-inches for the 4-inch size.

9. What is the oxygen delivery rate?
The rated delivery is at least 15 lb of oxygen per 100 lb of EHC-O, after 200 days.

O-SOX™ is available in two nominal sizes: 2 x 36 in and 4 x 36 in.

Product Ordering Information.

TR-410 2-in x 3-ft O-SOX (pail with 5 socks*) 13 lb
TR-411 2-in Canister (stainless steel, reusable) 1.5 lb
TR-412 4-in x 3-ft O-SOX (pail with 3 socks*) 28 lb
TR-413 4-in Canister (stainless steel, reusable) 3 lb

Accessories:
TR-416 Nylon-covered stainless-steel suspension cable with swaged cable loop at one end (sold per ft)
TR-414 2-in Well Cap with Cable Restraint 0.6 lb
TR-415 4-in Well Cap with Cable Restraint 1.2 lb
602528 Pail Opener 0.5 lb