On-line water quality monitoring system and method, and water sample storing and taking device and method

Abstract

The invention discloses an on-line water quality monitoring system and method, and a water sample storing and taking device and method. The system comprises a multi-channel direction selecting valve, an injection pump, a liquid storage ring, a detection chamber, a main sewage discharging pool and the water sample storing and taking device; a control water pump is further arranged at the bottom of the main sewage discharge pool, and a return pipeline for mounting a valve is arranged on a communicating pipeline between a sewage channel of the multi-channel direction selecting valve and the main sewage discharge pool; a sampling point is arranged behind a node where the communicating pipeline is communicated with the return pipeline; the water sample storing and taking device comprises a control device, a plurality of water sample storing and taking units and a water sample electric valve; each water sample access unit is connected with a sampling point through a water sample electric valve; and when the control device judges that the parameters of the detected water sample obtained by the detection chamber exceed the standard, the valve is closed, the control water pump is opened, and the detected water sample exceeding the standard is pumped back. According to the technical scheme, when the test data goes wrong, pumpback processing can be carried out in time, and instant manual sampling analysis is facilitated.

Description

technical field [0001] The invention relates to the technical field of water quality analysis, in particular to a water quality on-line monitoring system and method as well as a water sample access device and method thereof. Background technique [0002] The reducing substances in water include various organic substances, nitrite, sulfide, ferrous salt, etc., but the main ones are organic substances. Therefore, chemical oxygen demand (COD) is often used as an index to measure the content of organic substances in water. The most commonly used methods for the determination of chemical oxygen demand (COD) are acidic potassium permanganate oxidation and potassium dichromate oxidation. [0003] After the water sample test instrument is tested, the water sample is usually directly discharged to the sewage general discharge tank, and the original water sample cannot be preserved to meet the re-examination needs, and the water sample cannot be drawn for any period of time. Moreover...

AI Technical Summary

Problems solved by technology

[0003] After the water sample test instrument is tested, the water sample is usually directly discharged to the sewage general discharge tank, and the original water sample cannot be preserved to meet the need of re-examination, and the water sample cannot be drawn for any period of time.

Moreover, when the data measured by the water sample meter exceeds the standard, the sewage tank cannot be closed in time, so that the water sample that does not meet the standard is discharged, causing environmental pollution

Images