Industrial Blogs

  Introduction The wastewater generated from our industrial, domestic, and agricultural activities contains various pollutants. These include organic matter, nutrients such as nitrogen and phosphorus, pathogens, heavy metals, and chemicals. Once this wastewater is discharged into nature without treatment, it can seriously pollute water bodies, soil, and air, disrupting the ecological balance. We use various wastewater treatment equipment   and processes to improve the quality of sewage.   Among these processes   is often divided into five levels. Today, let's discuss what these levels are and how they operate.   Primary Treatment Primary treatment is the initial stage of wastewater treatment. Through physical methods such as screening and sedimentation, it can remove 60% of larger solids and suspended matter. At this stage, we set up a grille made of metal bars or meshes at the wastewater inlet to intercept large debris such as branches and plastic bottles. Then...

  Introduction Disc diffusers   are widely used in municipal , f ood w astewater   treatment   fields. They can achieve oxygen dissolution, pollutant degradation, or reaction acceleration through efficient gas-liquid mass transfer. However, during long-term operation, due to changes in factors such as water quality, operating parameters, and material aging, these diffusers may face various problems, resulting in low efficiency. This article will discuss with you the signs of these common problems and how we should deal with them. What is a Disc Diffuser? A disc diffuser is a disc-shaped device that uniformly disperses gases (such as oxygen, ozone) into a liquid (water) through a microporous membrane. Its main structure includes an elastic membrane , a support skeleton, and a gas distribution pipeline. The material of the membrane is mostly corrosion-resistant silicone rubber, EPDM rubber, or ceramic composite material. The disc structure gives it a larger contact sur...

  Introduction In traditional aquaculture, the growth status of fish is often affected by environmental climate, water resource shortages, and diseases. The Recirculating Aquaculture System (RAS)   has gradually emerged as an alternative option. This system supports fish farming in indoor tanks through recirculating water, providing a controllable environment for the cultivation of fish and other aquatic organisms. According to the Food and Agriculture Organization's report in 2022, the RAS system can produce 100 to 200 times more fish per unit of water compared to traditional methods. So, is it suitable for all aquaculture projects? The answer is no. In this article, we will explore the details and advantages of the RAS system together and discover its most appropriate applications.   What is the Recirculating Aquaculture System? (1)  Culture Pond : This is the main facility for fish farming, generally made of PP. Depending on the species and scale of farming, it ca...

  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...