The Sequential Batch Reactor (SBR) has emerged as a popular wastewater treatment method employed in municipal facilities, industrial plants, and small-scale domestic systems. In this article, we will delve into the SBR process, examining its underlying principles, operational workflow, and the advantages it offers in various applications. I. Principles of the SBR Process: The SBR…
The phenomenon of sludge flotation occurs in the secondary clarifier when activated sludge undergoes denitrification, causing the formation of sludge clusters that float to the surface or sludge particles that float and overflow with the effluent. On the other hand, sludge bulking is caused by poor settling performance of activated sludge. When the sludge-water mixture…
With the rapid development of industrialization and urbanization, wastewater discharge has become a significant environmental issue. Organic pollutants in wastewater pose a severe threat to the environment and human health. Therefore, it is crucial to explore efficient and feasible wastewater treatment technologies. Fenton’s method, as a chemical oxidation technology, has the capability to efficiently remove…
Textile dyeing and printing wastewater refers to the wastewater generated during the dyeing and printing processes in the textile industry. The wastewater is discharged from all four stages of the dyeing and printing process. In the pretreatment stage (including processes such as scouring, desizing, boiling, bleaching, and mercerization), desizing wastewater, boiling wastewater, bleaching wastewater, and…
Due to the complex and diverse composition of organic matter in wastewater, it is difficult to individually determine the quantitative values of each component. In practice, composite indicators are commonly used to indirectly represent the amount of organic matter in water. There are two categories of composite indicators that represent the organic matter content in…
DAF equipment is commonly made of either carbon steel or stainless steel. While stainless steel is often preferred in the food industry, the cost factor often leads to the predominant use of carbon steel. However, after several years of usage, carbon steel equipment may develop rust, ranging from minor corrosion to severe degradation, potentially compromising…
I. Introduction to Mixed Liquor Suspended Solids (MLSS)Mixed Liquor Suspended Solids (MLSS), also referred to as mixed liquor suspended solid concentration, represents the concentration of activated sludge in the mixed liquor. It indicates the total mass of solid particles in the activated sludge per unit volume of the mixed liquor. The units of measurement are…
1.What is eutrophication of water bodies?Eutrophication of water bodies is a natural phenomenon that occurs in freshwater when there is an excessive presence of nitrogen, phosphorus, and potassium, leading to sudden and excessive growth of algae. 2.What are the basic methods of wastewater treatment?The basic methods of wastewater treatment involve using various techniques and processes…
Cleaning a dissolved air flotation unit is crucial for its proper functioning. Incorrect cleaning procedures can negatively impact the machine and its components, hindering effective wastewater treatment. Here are some key steps to follow during the initial startup, explained in a more accessible manner: Prepare the wastewater tank: Before starting the unit, add lime powder…
一、Definition of oily wastewater Oily wastewater refers to wastewater that contains fats (fatty acids, soaps, fats, waxes, etc.) and various types of oils (mineral oils, animal and vegetable oils). Oily wastewater is characterized by high levels of chemical oxygen demand (COD) and biochemical oxygen demand (BOD), a certain odor and color, flammability, easy oxidation and…