Sludge is the byproduct separated from urban sewage treatment, which has a water content of over 85% in a liquid state, 65% to 85% in a plastic state, and below 60% in a solid state. Classification of Sludge Sludge can be classified based on the source, digestion, and composition. According to the source, it can…
Paper is a ubiquitous material in our daily lives, providing immense convenience. However, the treatment of wastewater generated from the paper industry has emerged as a crucial issue, not only for the industry, but also for society at large. Failure to effectively address this problem is limiting the survival and growth of paper manufacturing enterprises….
A multi-media filter uses one or more filtering media to effectively remove suspended impurities from water and clarify it under a certain pressure by passing turbid water through a certain thickness of granular or non-granular materials. Common filter media include quartz sand, anthracite, manganese sand, etc. It is mainly used for pretreatment of water treatment,…
一、PAC and PAM Polyaluminum chloride (PAC), also known as basic aluminum chloride or hydroxy aluminum chloride, is widely used to treat wastewater or sludge. It can quickly form large particle precipitates from colloids in wastewater or sludge, which can be easily separated. The molecular formula of PAC is [Al2(OH)nCl6-n]m, where n is any integer from…
During the daily operation of the sewage system, why do the bacteria in the biochemical tank die? In addition, how do we determine the bacteria have died? Today, I will analyze the reasons and hope to be helpful to you. 一、Conditions affecting microbial bacterial growth Microbial bacteria are affected by factors such as pH, temperature,…
一、What is a sewage regulating tank? A sewage regulating tank refers to a structure used in wastewater treatment to regulate the flow of incoming and outgoing water. It is often used in industrial wastewater stations, industrial park sewage plants, and similar facilities. 二、How important is a sewage regulating tank? This is very important, especially for…
The main toxic effect of high concentrations of chloride ions on biological wastewater treatment is through the increased environmental osmotic pressure, which damages the cell membrane and enzymes inside microbial cells, thereby disrupting the physiological activities of microorganisms. Microorganisms grow well under isotonic conditions, such as in a NaCl solution with a mass concentration of…
When a sewage treatment facility is put into formal use, its biochemical treatment equipment needs to be inoculated and acclimatized (commonly known as commissioning). For larger-scale sewage treatment facilities, it is important to shorten the commissioning time as much as possible, so that the treatment process can be put into normal operation as soon as…
Activated sludge aging is common in most aerobic biochemical systems, and the aging of activated sludge leads not only to an increase in the major pollution indicators of the effluent, but also to a waste of energy. Due to the aging of activated sludge, excessive aeration and low loads tend to cause excessive energy consumption….
Dissolved air flotation is a common sewage treatment device, which works well to remove impurities. But how to keep the DAF in good working condition is a problem faced by many users. I will show you how to do this through this article. 1. One of the factors affecting the DAF effect is the degree…