（I）. Analysis of the causes of MBR blockage 1. Wastewater quality The nature of wastewater has an important impact on MBR blockage. High concentrations of organic matter, inorganic salts, suspended solids, and microbial content will increase the degree of membrane fouling. For example, in the treatment of printing and dyeing
（I）Membrane surface pollution and blockage 1. Organic pollution Cause: A large amount of organic matter contained in wastewater, such as protein, oil, polysaccharide, etc., is adsorbed and deposited on the membrane surface to form an organic film. These organic substances have strong adhesion and are easy to combine with microbial
1.the difference 1)Process principles and characteristics MBR: Combines membrane separation technology with activated sludge method, uses membrane components instead of secondary sedimentation tanks, realizes the separation of sludge retention time and hydraulic retention time, increases activated sludge concentration, and improves effluent quality. SBR: Intermittent activated sludge process, which carries out
In the field of water treatment, sedimentation tanks play a vital role. Different types of sedimentation tanks are widely used in both water supply treatment and drainage treatment. These sedimentation tanks mainly rely on gravity to effectively separate solid particles in the water, thereby achieving the purpose of purifying water
The EDR process is a new process. It reverses the polarity of the positive and negative electrodes (frequent reversal) at regular intervals (usually 15-20 minutes). This can automatically clean the dirt on the ion exchange membrane and the electrode surface, ensuring the quality and quantity of fresh water, stable operation
In the previous post, I introduced the physical methods in wastewater treatment. Today we will talk about another common process – chemical method. The chemical method involves adding chemical reagents to wastewater to cause a chemical reaction between pollutants and the reagents, thereby changing the properties of pollutants and achieving purification purposes.
A/O anoxio/oxic A2/O or A/A/O anaerobic/Anoxio/Oxic AA active AI2O3 A-A-O biological nitrogen and phosphorus removal process AB adsorpti on biodegradation ABF activated bio-filter AC active carbon AF an aerobic filter ALK alkali A-O A-O phosphorusremoval process A-O A-O nitrogen removal process BFD block flow diagram BG backside grinding BHT butylated
In Wastewater treatment, common processes include physical methods, chemical methods, and biological methods. They have different usage objects and effect. Today we will first discuss physics method. The physical method mainly uses physical means to remove suspended solids, floating solids, and some dissolved substances in sewage, without changing the chemical
COD, or chemical oxygen demand, is an important indicator for measuring the degree of pollution of reducing substances in water. High COD wastewater, or wastewater with high chemical oxygen demand, usually means that the wastewater contains a large amount of organic matter. As its content increases, the oxygen deficiency in
1. Activated sludge technology: Activated sludge technology is a biological method that introduces air into wastewater to allow aerobic microorganisms to multiply and cultivate to form activated sludge with strong adsorption capacity. Biological methods have gradually become the mainstream method of sewage treatment technology. The basic process of activated sludge
