Jar testing is a method for determining the proper dose rates of chemicals necessary for treating wastewater. It is a miniature batch treatment tank with all the variables under control of the operator. It usually consists of a “jar” or beaker of a known volume and a variable speed mixer. The mixer can be as…
What forms does oil take when in water? Oil has two basic forms in wastewater, non- emulsified and emulsified. Non-emulsified oil floats on the surface of the water and is easily removed before wastewater treatment. Emulsified oil is oil that was subjected to chemical or mechanical action and dispersed into the water. It does not…
In order to sell the liquid hydrocarbons that are produced by oil producing wells, they need to meet specifications that define the maximum allowable amount of water and salt, along with other impurities. Unfortunately, the liquid hydrocarbons that are produced by the wells seldom (if ever) match these requirements. So, there will always be some…
1) Pretreatment process The wastewater treatment plant is a very interesting place because it takes one of the most disgusting substances in the world and turns it back into something that is essential to our life. This interesting process can be broken down into several smaller processes: That brings us to the first step of…
Unfortunately, water pumps can get clogged with dirt or debris, and that can cause the pump to stop working correctly. To keep your pump working at full capacity, you need to keep it free of dirt and debris. Let these tips help you. On a regular basis, you should check how hoses and other elements…
COD – Definition COD: Also known as Chemical Oxygen Demand (Chemical Oxygen Demand), Chemical Oxygen Demand (COD or CODcr) refers to the reduction of reducing substances in water under certain strict conditions under the action of an external strong oxidant. The amount of oxidant consumed during oxidative decomposition, expressed in mg/L of oxygen. The chemical…
Generally, the water is collected from a water source close the refinery and, after the adequate treatment, distributed to consumption according to the final application. Normally, the use of water in a refinery is divided as water to fight emergencies, clarified water, industrial water, potable water, and demineralized water. Figure 1 presents a simplified diagram…
Dissolved air flotation is a common sewage treatment equipment, which has a good impurity removal effect for sewage with floating objects in the water body. Therefore, it is recognized by manufacturers in all walks of life that need sewage treatment. But after all, the air flotation machine is also a mechanical device, and it is…
If in the process of using the dissolved air flotation equipment, it is found that there is a lot of sludge inside, and many people think that they can add an appropriate amount of lime and ferrous sulfate to clean the sludge inside, then what else can be done besides this method? The way to…
Objectives of WWT Reduce organic content (reduction of BOD), Removal/reduction of nutrients i.e, N,P and Removal/inactivation of pathogenic microbes. What is Wastewater? Dairy and industrial waste–slaughterhouse waste, dairy waste, tannery wastewater, etc. Domestic waste: human and animal excreta and waters used for washing, bathing, and cooking. 100-500 g wet weight of feces and 1-1.3 L…