Sewage sludge is the product of the city separated, and now the city sludge treatment approach is generally used underground landfill approach. This approach is bound to take a lot of urban land use, urban sewage treatment plant in GJ3025-1993 sewage sludge discharge standards, clearly defined by the stabilization process in the plant's wastewater treatment plant sludge dewatering process should be carried out, the moisture content should be less than 80%. But to make the deal to reduce the moisture content of the sludge is bound to consume a greater amount of flocculant and power, this will inevitably increase the operating costs of sewage treatment plants. Sewage treatment plant sludge emission standards to be reached at the same time without increasing operating costs, the determination of the moisture content of the sludge, it is very important. Determination of moisture content of the sludge in the past generally traditional gravimetric method, that is, from the weight after drying sludge and sludge original weight ratio calculated moisture content of the sludge, although the method is simple but time-consuming, not really sewage treatment plant to meet operational requirements. Currently using SH-02 series of high-field moisture analyzer can quickly direct determination of the moisture content of the sludge, simple and time-saving, and achieved satisfactory results. The moisture content of the sludge and solid holdup unit mass of water contained in the sludge mass fraction of said moisture content, the corresponding solids in the sludge mass fraction is called solids (%). The moisture content of the sludge is generally high, and containing low solid content, such as municipal wastewater treatment plant sludge solids early in the 2% to 4%, while the remaining sludge solids at 0.5% to 0.8%. Sludge moisture content: P = M / (MS) · 100% formula: P- sludge moisture content,% M- sludge water quality S- total solids in sludge quality. Sludge in the form of water present in the pore water: particle gap free water, about 70%, can be separated by gravity settling (concentrated compaction); capillary water: is highly dense around the fine sludge particles in the water, by formed by a capillary phenomenon, about 20%, by applying a centrifugal force, negative pressure force, surface tension and capillary forces destroy cohesion and separation; surface adsorbed water: sludge often in the colloidal state, such as activated sludge belong gel sludge small colloidal particles, large surface area, so the surface tension of the water adsorption more. Internal / bound water: water is surrounded by a portion of the sludge in the cell membrane of microorganisms, the formation of the internal binding of water. Surface adsorbed water and bound water accounts for about 10% of sludge in the water, all kinds of capillary bound water accounts for about 20% of the total amount of sludge in the water, accounting for about 70% of interstitial water sludge moisture total. How much sludge and sludge drying moisture content is closely related to treatment process, sludge state and flow properties. Typically concentrates can be reduced to 85% moisture content (water content), the water content at 70 ~ 75%, the sludge was softened state, easy flow; dehydration generally only be reduced to usually 60 to 65%, then the almost solid , low moisture content to 35% to 40%, was everything the state (more than a semi-dry state); further lower to 10% to 15% are in powder form. Therefore, the sludge production process, moisture detection is essential to choose a suitable instrument sludge water is also essential. The traditional method of dry weight, although the test is accurate, but the measurement time is long, time-consuming cost, low efficiency, high-field fast moisture analyzer is fast, simple, accurate characteristics, measurement results can be achieved consistent with the national standard method, weight gradually replacing the traditional method, the sludge industry has been more widely used. Works Instrument Co., Ltd. Shenzhen Yi Gerui through cooperation with foreign equipment manufacturers developed the production of high-field fast moisture meter, through high-energy magnetic field signal instruments issued in a high magnetic field can signal through the water molecules, induction instrument receive, and then receive back signal analysis, instant result. Effective solution to the problem of the traditional oven aging testing, measuring the results of sample 1 second, accurate and reliable. By the principle of high field capacity, can effectively solve the traditional oven brings moisture meter is not efficient, so Yi Gerui moisture meter high field can have: simple operation, high speed, high accuracy, low cost, etc., are traditional oven moisture meter replacement. Machine Name: SH-02 Moisture Analyzer New sludge, sludge moisture analyzer (Shenzhen Yi Gerui Instrument Co.) Technical Specifications: determination of moisture content range: 0% -99% solids measurement range: 99% -0% Weighing Accuracy: 0.5g Display: LCD display with backlight sensor: Swiss imports sensors to ensure measurement accuracy using the power: 9v Working temperature: 5 ℃ -35 ℃ best Dimensions: 205x65x50 Net Weight: 0.24kg steps: Yi Gerui brand SH Series Series Moisture Analyzer is a high-tech moisture measurement instrumentation, measurement data is very accurate, but it is extremely simple to use, no special training. Follow these steps: 1. Before measuring sludge water, hand-held instrument (Do not probe contacts the object), turn on the switch (the switch to ON) figures show that within ± 00.5, if not within its scope, should be slowly rotating zero knob so that the digital display to within ± 00.5