Hydrogen Peroxide in Oman: Industrial Wastewater Guide for Sohar
November 13, 2026
If your Sohar plant has to remove sulfide odour or bring COD down before discharge, hydrogen peroxide in Oman is one of the most practical oxidisers you can dose. Hydrogen peroxide (H2O2, CAS 7722-84-1) is a clear, colourless liquid that breaks down to water and oxygen, so it leaves no chlorinated by-products in your effluent. We supply industrial hydrogen peroxide 35% and 50%, and a ready-to-use 7-10% solution, from our Barka warehouse to Sohar and the rest of Al Batinah. The grade you choose and the way you set the dose decide whether the treatment works.
Industrial hydrogen peroxide: which grade to buy
The common industrial grades are 35% and 50% w/w. They are stabilised and acidic, with a typical pH of 1.2-2.5. Stronger 60% and 70% grades exist for specialist users, and our wastewater record also lists a 60% grade.
For most effluent and odour work in Sohar, the 35% grade is the sensible choice. It carries less stored energy in each container and is easier for a site team to handle. The 50% grade suits larger plants that dose continuously from a tank with approved pumps and trained operators, because each drum holds more active peroxide. Typical active oxygen is 16.5% for the 35% grade and 23.5% for the 50% grade.
For surface sanitation and small water systems where staff should not handle the strong grades, order our hydrogen peroxide 7-10 percent solution. For bulk dosing, see our industrial hydrogen peroxide 35% and 50%.
| Item | 35% grade | 50% grade |
|---|---|---|
| Part number | RXSOL-40-1630-025 (industrial), RXSOL-19-1630-210 (wastewater, 35%, 50% and 60%), RXSOL-40-1630-026 (7-10% solution) | |
| Purity wt% | 35~36 | 50~51 |
| pH | 1.20~2.50 | 1.20~2.50 |
| Specific gravity 20/4 °C | 1.130 min | 1.195 min |
| Residual wt% | 0.20 max | 0.20 max |
| Active oxygen (typical) | 16.5% | 23.5% |
| Application | Wastewater treatment, BOD and COD reduction, sulfide and odour control, cooling water, bleaching, disinfection | |
| Transport | UN 2014, Class 5.1 (subsidiary 8), Packing Group II | |
| Packing | Industrial grades are typically supplied in vented plastic drums or carboys; size confirmed with your quote | |
| Documents | Ask about MSDS and COA when you enquire | |
Hydrogen peroxide wastewater treatment in the Sohar Industrial Zone
Sohar has a mix of effluents that respond well to an oxidiser: refinery spent caustic and sour water carrying sulfide, petrochemical streams with high COD, rinse water from steel and aluminium plants, and wastewater collected at Sohar port from vessels and terminals. In industrial effluent, hydrogen peroxide treats refinery wastewater with reduced sulfur compounds, lowers BOD and COD, and works as a pretreatment ahead of biological stages.
The results can be strong. In one study on refinery spent caustic, H2O2 removed about 99.8% of sulfide, down to about 0.5 mg/L, with about 30 minutes of reaction time. Your own effluent will differ, so treat published figures as a guide and confirm them on your stream.
Whatever you dose, the treated effluent must meet the Environment Authority limits in your permit before you discharge or reuse it. Keep your jar test records and dosing logs with your compliance file.
Sulfide and H2S odour control: how the dose is worked out
A typical starting dose for H2S control is about 1 part H2O2 to 1 part H2S by weight. You need more when the water holds other oxidisable matter. The result depends on reaction time, iron (which acts as a catalyst), pH, temperature, and the starting and target H2S levels.
pH changes the chemistry. Below about pH 7.5, sulfide oxidises to elemental sulfur and needs about a 1:1 molar ratio of H2O2 to H2S. Above about pH 7.5 it goes to sulfate, which needs about a 4:1 molar ratio of H2O2 to H2S. One patented wastewater method caps the dose at no more than 4:1 molar H2O2 to dissolved sulfide and keeps at least 1 ppm residual H2O2 afterwards, which is a useful control point for your operators.
Before you set a plant dose, run jar tests. Take a fresh sample, record pH and sulfide, add a series of doses, allow the contact time, and measure residual sulfide and residual peroxide. Scale the lowest dose that meets your target up to your plant flow. Compared with chlorine or hypochlorite, peroxide leaves no residual chlorine and no chlorinated by-products in the discharge.
COD and BOD reduction with Fenton's reagent
When peroxide alone does not bring COD down far enough, plants switch to Fenton's reagent: H2O2 with ferrous iron at acidic pH. In petrochemical wastewater studies, Fenton treatment has removed about 70% of COD and 88% of TSS. The best peroxide dose and iron level must be found by testing, because both depend on what is in the water.
In practice you adjust pH down, add the iron salt, dose the peroxide slowly with mixing, then neutralise and settle the iron sludge. Peroxide alone is simpler for sulfide. Fenton suits stubborn organic COD from petrochemical and chemical plants.
Hydrogen peroxide as a cooling water biocide: benefits and limits
Our diluted peroxide is listed for biofouling control in cooling water systems, and it sits in our cooling water chemical range. Know the limits before you replace an existing biocide. In a pilot cooling tower, continuous H2O2 at 2-3 ppm suppressed sessile (biofilm) growth but did not control bacteria in the bulk water. Peroxide demand was high because catalase-positive organisms break it down.
The same trial found that peroxide corroded mild steel and copper unless suitable corrosion inhibitors and oxidation-resistant deposit control agents were used. If your Sohar cooling tower has mild steel or copper metallurgy, pair peroxide with a compatible inhibitor programme and monitor corrosion coupons. Our earlier article on hydrogen peroxide applications and case studies in industry covers uses outside water treatment.
Hydrogen peroxide storage and handling in Oman's heat
Never add water to concentrated product in its container, and never return unused product to the drum, because contamination can cause decomposition. Keep the product away from reducing agents, organics, metals, acids, alkalis and ignition sources.
Store drums in a cool, dry, ventilated area away from heat, sunlight and combustibles, in vented, tightly closed original containers, and not on wooden pallets. In a Sohar summer, a yard in full sun is the wrong place. Keep drums shaded and well away from diesel, oils and organic waste. HDPE is limited to concentrations of 50% or below, and UV and temperatures above about 32 °C (90 °F) speed up its embrittlement. For bulk tanks, the recommended metals are high-purity aluminium and 304/304L/316/316L stainless steel, passivated before use.
Watch for warning signs. Bulging or leaking drums and rising temperature are signs of rapid decomposition. Design pipework so liquid cannot be trapped, because oxygen release builds up pressure. The storage area needs an eyewash and a safety shower.
Concentrated grades above 30% carry the signal word Danger, with H272 (may intensify fire, oxidizer), H302/H332 (harmful), H314 (severe skin burns and eye damage), H335 and H412. The exposure limit is TWA 1 ppm. Contact with the eyes can cause severe injury or blindness. Avoid contact with skin and eyes, and in case of insufficient ventilation, wear suitable respiratory equipment. If skin or eyes are splashed, rinse with lukewarm water for at least 10-15 minutes and get medical advice.
Where to buy hydrogen peroxide in Oman: Sohar deliveries from Barka
Sohar Chemical (RXSOL group, Oman) supplies hydrogen peroxide from our Barka warehouse, with deliveries to Sohar and Al Batinah. Call +968 99489269 or message us on WhatsApp at +968 99489269.
When you send an enquiry, ask whether a COA and SDS are available, and ask about the stabiliser type, the UN 2014 Class 5.1 (8) transport papers and the drum size, and tell us your grade and monthly volume. Hydrogen peroxide is also listed on our Salalah site for buyers in Dhofar and Salalah, and the 35% grade is on our Muscat site for buyers in Muscat and Ruwi.
Request a quote for hydrogen peroxide 35%, 50% or 7-10% on WhatsApp at +968 99489269, or use our quote request page.
Frequently asked questions
Where can I buy industrial hydrogen peroxide in Oman for a plant in Sohar?
Sohar Chemical supplies industrial hydrogen peroxide 35% and 50% and a 7-10% solution from our Barka warehouse, with deliveries to Sohar and Al Batinah. Call or WhatsApp +968 99489269 for a quote.
What is the difference between 35% and 50% hydrogen peroxide, and which should a plant buy?
Typical purity is 35-36 wt% for the 35% grade and 50-51 wt% for the 50% grade. The 35% grade is easier and safer for most effluent and odour dosing. The 50% grade suits larger plants that dose continuously from a tank with approved materials and trained staff.
How much hydrogen peroxide is needed to remove H2S from wastewater?
A typical starting dose is about 1 part H2O2 to 1 part H2S by weight. Below about pH 7.5 the reaction needs about a 1:1 molar ratio of H2O2 to H2S; above about pH 7.5 it needs about a 4:1 molar ratio. Confirm the dose with jar tests on your own effluent.
Can hydrogen peroxide reduce COD and BOD in industrial effluent?
Yes. It is used to lower BOD and COD and to pretreat industrial wastewater. For stubborn organic COD, Fenton's reagent (H2O2 with ferrous iron at acidic pH) has removed about 70% of COD in petrochemical wastewater studies, with the dose found by testing.
Is hydrogen peroxide dangerous goods for transport, and how should drums be stored in hot weather?
Yes. It ships as UN 2014, Class 5.1 (subsidiary 8), Packing Group II. Store vented original drums in a cool, shaded, ventilated area away from sunlight, combustibles and wooden pallets, and treat bulging drums or rising temperature as signs of decomposition.
