As we all know, in the water treatment chemicals, the more widely used generally for coagulants and flocculants, namely, polymeric aluminum chloride and polyacrylamide. Coagulants mainly refer to inorganic ones, such as ferrous sulfate, aluminum sulfate, and flocculants generally refer to organic ones, such as PAC, PAM, and so on. The process of coagulation is the addition…
Industrial sand filters are commonly used for removing suspended solids from the water using a single-size filtration media. The filtration process can be decided by adjusting the size of the filter sand. The ideal size of each granule usually varies from 0.35mm to 1.2mm. Industrial sand filters can have graded support media layers or be…
A necessary part of all municipal and industrial wastewater treatment plants, wastewater screening retains solids found in the wastewater. These solids must be removed at the very beginning of the water treatment process, as these solids could make the whole system less efficient, damage expensive and essential water treatment equipment or contaminate water, causing small…
Controlling odors is one of the most important – and yet most challenging – aspects of wastewater treatment. Foul odors are often a source of complaints, igniting objections from plant workers and neighbors alike. What are the impacts of uncontrolled odors? Although many odors are contained within the proximity of the plant, some odors naturally drift…
Biological deodorant is used in biological deodorization which is to fix the selected deodorant microorganisms on the carrier and oxidize and degrade the malodorous pollutant through a certainbiochemical pathway. The deodorization process of biological deodorant is a comprehensive process of gas diffusion and biochemical reaction. The deodorization mechanism can be divided into three stages.First, the…
Dissolved air flotation is a professional equipment used to treat sewage, and it is also a widely used equipment in the sewage treatment industry. Today, let me share with you how to ensure the effective treatment of sewage by dissolved air flotation: To ensure the effective treatment of sewage by dissolved air flotation, the following…
Nowadays, there is a field of many DAF manufacturers around the world or even in your country. So whether you are an agent who recommends and purchases a DAF system for your customer or you are an engineer who focuses on the project development process, at some certain point, you will have to verify the…
In the simplest terms, dewatering is the removal of liquids from a sludge slurry. The process involves using one of three dewatering techniques. The three techniques are plate and frame filter press, centrifuge and belt press. These techniques are used in wastewater treatment plants, power plants, refineries, and drinking water facilities to reduce the volume…
Sewage sludge formed during their mechanical, biological, and physicochemical treatment refers to difficult-to-filter colloidal suspensions, sometimes containing specific inclusions in the form of fats, oils, petroleum products, etc. Currently, the sewage treatment plants (STP) mostly utilize belt filter presses, centrifuges, and multi-disc screw press dehydrators for sludge dehydration. We are well aware of the common…
Wastewater treatment involves many comprehensive steps to remove debris, grits, grease, and other pollutants to produce clean water. It involves several screenings, biological degradation, the addition of chemicals, disinfection, and much more. The first step, though, is the removal of the largest objects in wastewater. For this purpose, we need bar screens. What is a…