How Much to Know About Suspended Matter

Suspended solids refer to solid substances suspended in water, including insoluble inorganic matter, organic matter, mud sand, clay, microorganisms, etc. In turbulent water flow, it is suspended in the water, and once the turbulent conditions cease to exist, it settles to the bottom at different speeds. It is generally believed that those that can be settled and separated by standard settling tubes within the technical operation time (generally not more than 2 hours) are called easy-settling suspended substances, and those that are difficult to settle and separate are called difficult-settling suspended substances. The content of suspended solids in water is one of the indicators to measure the degree of water pollution. Metallurgical wastewater contains more or less suspended solids. Mine water, rainwater from open pits and waste rock dumps contain 10-104 mg/L of suspended solids. The content in tailings water is about 104-106mg/L. The content of concentrate overflow water is about tens of milligrams per liter. The content of suspended solids in smelting flue gas washing water varies with raw materials, smelting processes and dust collection methods, generally hundreds to thousands of milligrams per liter; Furnace flue gas washing water is about 2000~6000mg/L. The suspended solids concentration meter is an online analysis instrument designed for measuring the suspended solids concentration in the municipal sewage or industrial wastewater treatment process. Whether evaluating activated sludge and the entire biological treatment process, analyzing wastewater discharged after purification treatment or detecting sludge concentrations at different stages, the suspended solids sludge meter gives continuous and accurate measurement results. Suspended solids concentration meter measurement principle The infrared light sent by the transmitter on the sensor is absorbed, reflected and scattered by the measured object during transmission, and only a small part of the light can irradiate the detector. The transmittance of the transmitted light is the same as that of the measured sewage. There is a certain relationship between the concentration of the sewage, so the concentration of the sewage can be calculated by measuring the transmittance of the transmitted light. The sensor of the photoelectric suspended solids concentration meter uses four-beam technology. The four-beam technology uses two emitters and two detectors. The light sent by each emitter is transmitted and irradiated on the two detectors, thus generating a series of The optical path is used to obtain a data matrix, and then by analyzing these data signals, the accurate concentration of suspended matter in the medium can be obtained, and the interference can be effectively eliminated, and the deviation caused by pollution can be compensated, so that the instrument can work in a harsh environment.