污水水质检测（Sewage water quality detection）.docVIP

污水水质检测（Sewage water quality detection） The routine laboratory test and analysis of sewage water quality is very important in wastewater treatment, and it plays a directive and guiding role in the process of wastewater treatment. The correct water quality analysis results can reflect the influent concentration of the primary sewage and the effluent concentration after treatment so as to determine the proper method of sewage treatment. Routine testing of water quality and simultaneous analysis of data can reflect the operational status of sewage treatment structures and various specific variations. Such as abnormal entry of industrial wastewater into the water, abnormal running of sewage treatment process and so on. Therefore, the water quality analysis of time and place is the work that must be done to check the result of sewage treatment and adjust and control the running state of sewage treatment. Some routine inspection items of sewage water quality are divided into the following categories: Indicators that reflect the physical properties of sewage: water temperature, color, odour, SS Reflect the sewage chemical properties index: BOD (biochemical oxygen demand), COD (chemical oxygen demand), NH4-N (ammonia nitrogen), NO3-N (nitrate nitrogen), TKN (Kjeldahl nitrogen), TN (total nitrogen), TP (total phosphorus), PH, turbidity Hygiene index: total bacteria, coliform bacteria and so on Indicators that reflect the characteristics of sludge: SV, MLSS (mixed liquid suspended solids concentration), MLVSS (volatile mixture, suspended solids concentration), solid content, microscopic examination and so on 1 pH value Represents the pH of the sewage, which is the reciprocal of the concentration of hydrogen ion in water, with a range of 0~14. The pH value of sewage has a certain influence on pipes, pumps, gate valves and sewage treatment structures. High or low pH values can indicate the entry of industrial waste water. Too low will corrode the pipe, the pump may also cause ha