Industrial Blogs

  Introduction Municipal sewage treatment mainly refers to the domestic, commercial, and industrial wastewater that flows into the sewers. Of course, it also includes rainwater and meltwater from snow. These waters contain a large amount of food residues, nutrients such as nitrogen and phosphorus, as well as various microorganisms and pathogens, etc. For the sustainable utilization of water resources and ecological protection, we generally treat this wastewater before discharging it into rivers and oceans. Today, we will explain in detail the process flow of municipal sewage treatment. （1）Pretreatment Pretreatment is the first step in sewage treatment, which includes: Screening Treatment:  The screen can intercept large pieces of garbage to prevent them from clogging the water pumps. Pump Station Lifting: The pump station lifting can increase the water head of the sewage, allowing the sewage to flow through subsequent treatment structures by gravity. Grit Removal Treatment: ...

  Introduction Statistics show that each ton of untreated high - COD wastewater can consume the dissolved oxygen in about 14 tons of clean water. If such wastewater is directly discharged, it will pollute waterways and water sources, cause water bodies to become oxygen - deficient, and even threaten ecological security. Therefore, reducing the COD in wastewater is crucial for protecting the aquatic ecosystem. In this article, AquaSust will discuss its types and treatment technologies, to provide you with reference in the wastewater treatment process.   What is High - Concentration COD Wastewater ？ In environmental chemistry, Chemical Oxygen Demand (COD) is an indicator for measuring the amount of oxygen that can be consumed by reactions in a certain solution. High - concentration COD wastewater refers to sewage with a very high COD content. It contains a large number of organic pollutants, including human excrement, food waste, fats, and oils. Common Forms of High - Concentra...

  Introduction Wound - rotor asynchronous motors are widely used in heavy - duty equipment such as mining machinery, port cranes, and metallurgical rolling mills due to their wide speed - regulation range and high torque output. During long - term operation, the slip ring, which is a component for current transmission and signal control in winding motors, often suffers from overheating problems. This, in turn, leads to a decline in the overall lifespan and efficiency of the motor. To address this issue, the ventilation and cooling structure of the slip ring has been designed. But do you know why the slip ring heats up and how this structure dissipates heat? Today, we will discuss this issue in this article.   Heat Source Analysis of the Slip Ring in Wound Rotor Motors The slip ring connector transfers power, data, and signals between the rotor circuit of the wound rotor motor and the external stationary circuit. This is achieved through the sliding contact between the rotatin...

  Introduction In sewage treatment, aeration equipment prepares for the next stage of water treatment. Its main function is to introduce air into wastewater, thereby promoting the decomposition of organic matter. This can reduce the Biochemical Oxygen Demand (BOD) in the wastewater, improving the water quality. However, there are numerous sewage treatment aeration equipment manufacturers in the market. How do you choose the one that suits you? This is the question we will explore in this article.   What Types of Aeration Equipment are There? Based on the working principle, aeration equipment can be divided into two main categories: blast aeration and mechanical aeration. The details are as follows: (1)  Blast Aeration Equipment This system uses a blower to deliver air to the diffuser device at the bottom of the tank. It forms bubbles to oxygenate and stir the sewage, enabling aerobic bacteria to digest the organisms in the water. Its components include:   Blower : Th...

  Introduction Phased - Array Radar (PAR) is a type of meteorological radar that uses a planar antenna to electronically scan the atmosphere. Thanks to its beam - shaping capabilities, it can rapidly change the beam direction to monitor weather conditions in different areas, such as storms. Among them, the multi - channel slip ring is installed at the rotating joint of the radar, connecting the rotating antenna system to the fixed radar base and back - end signal processing equipment. It can continuously transmit various signals and electrical energy received and sent by the radar while the antenna is rotating. However, gradually, it has been found that the application of high - bandwidth frequencies in the radar, such as the Ka - band, and the emergence of complex modulation signals like OFDM have put forward more requirements for the multi - channel transmission of slip rings. So, what are these requirements, and how should we address these challenges? Technical Architecture of M...

Introduction In fields such as industrial automation, aerospace, and power energy, electrical slip rings are used in many devices to transmit electricity, data, and signals. However, in extreme environments, the contact points of slip ring components are prone to oxidation, and the insulation materials tend to age. This can lead to malfunctions such as unstable signal transmission and slip ring short - circuits, affecting the normal operation of the equipment. So why and what should we do? The Influence Mechanisms of Extreme Environments on Slip Rings （1）High Temperature In a high - temperature environment, the atomic activity of the metal contact points of the slip ring increases. The oxidation rate accelerates, so a layer of copper oxide quickly forms on the surface of the copper - based conductive ring. The electrical conductivity of copper oxide is much lower than that of copper, resulting in an increase in the contact resistance of the slip ring. This causes problems such as heat...