Safety Item-64

Dirt attached on air-side fins of air coolers are a mix of carbonaceous particles such as soot and oil mist of unburned fuel components. 
Carbonaceous particles can be removed by Alkaline Cleaners Part No. RXSOL-16-1040-025 ( www.rxmarine.com/alkaline-air-cooler-cleaner ) and oil mist can be removed by oil based cleaners. However, it is very difficult to remove the mix of these substances. If you use an alkaline cleaner, oil will repel the water based alkaline cleaner; if you use oil based cleaner, carbonaceous particles will get in the way and stop oil from being removed.

This cleaners designed to remove both carbonaceous and oil simultaneously. An effective cleaning method is to immerse one side to remove the loose stains first, and then immerse the other side. This method can efficiently remove dirt and prevent swollen dirt peeled from fins from blocking the spaces between fins.

Dirt in tubes of seawater side

White scales attached on the seawater side of air coolers of many vessels. We found that in most cases, the main component of the scales is calcium carbonate and there is also a small amount of calcium sulfate. Therefore in most cases, if you dissolve the calcium carbonate the scales will be removed.

However, if the amount of scales is large enough to block the tube, the cylindrical scale will usually have calcium carbonate on the outside (the side that is in contact with tube) and calcium sulfate in the center (part that seawater passes through). Calcium sulfate is easier to be formed when the temperature goes higher.

When the amount of scales increases, the contact area of scale and cleaner is very small and a longer time of dissolution is required. Calcium sulfate cannot be dissolved by an acid cleaner.

Typical dosage range is between 1 and 6 mg/L. Maximum dilution is temperature related as shown:

Important Note: Over and under-dosing may cause membrane fouling so please contact RX Marine International representative to define the optimal feed point and dosage rate. Maximum Dilutions

House Hold : One of the most common uses of hydrogen peroxide is as a disinfectant. Spray it on surfaces like kitchen counter top and wipe with a clean rag. It can be used as a mouthwash too. You have to dilute the chemical with water and use it for rinsing the mouth. This mouthwash is also said to whiten teeth. Ensure that you do not swallow the liquid, while rinsing.
It can also be used to wash vegetables and fruits, in order to get rid of germs and pesticides. Add some hydrogen peroxide to a bowl full of water (you may also add a few pinches of salt). Soak the veggies and fruits for some time. Remove them and rinse with cold water, before use.This chemical is also used to purify water in swimming pools.
 

Agriculture : Farmers use it as an insecticide. They spray diluted form of this chemical, on plants, so that the pests and weeds get killed, without causing harm to the plants. Its also used for watering plants. Mix an ounce of this chemical with a quart of water and use it on plants. Apart from boosting the level of oxygen in the soil, this mixture is also said to prevent root rot. Some people soak seeds in it, after diluting it with water. It is said that this will fasten the process of germination. For this purpose have to mix 1.5 teaspoons of hydrogen peroxide in a cup of water.

Textile: It acts as a stain remover. Put 1 spoon tea in 1 bucket water  and let it sit for a while. After that, rinse the stains with water and soap.
As it has bleaching property, it is used as a bleach too.

IIndustrial :

Reduced Sulfur Compound Treatment for Refinery Wastewater

Sulfur compounds, such as hydrogen sulfide, thiosulfates and mercaptans, can present serious refinery wastewater problems. Hydrogen peroxide treatment is a cost effective way to treat these reduced sulfur species.

Supplemental Dissolved Oxygen to Reduce BOD and COD

Hydrogen peroxide has been used to reduce BOD and COD in refinery wastewater Supply of Supplemental Dissolved Oxygen (DO) when biological treatment systems experience temporary overloads or equipment failure.Predigestion of wastewater which contains moderate to high levels of compounds that are toxic, inhibitory or recalcitrant to biological treatment.As indicated by these examples, hydrogen peroxide can be used as a stand-alone treatment or as an enhancement to existing physical or biological treatment processes, depending on the situation.

Wastewater Pretreatment
Hydrogen peroxide is one of the most versatile, dependable and environmentally compatible oxidizing agents. The relative safety and simplicity of its use as an oxidizing agent has led to the development of a number of applications in refinery wastewater systems.