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Online monitoring system for COD of high-concentration sewage

A monitoring system and high-concentration technology, which is applied in the direction of test water, measurement devices, and test sample preparation, can solve the problems of dilution device blockage and easy precipitation, etc., to reduce workload, have strong applicability, and ensure reliable operation Effect

Inactive Publication Date: 2017-12-08
EAST CHINA ENG SCI & TECH
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because high-concentration sewage is relatively dirty and prone to sedimentation, conventional dilution devices are prone to clogging

Method used

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  • Online monitoring system for COD of high-concentration sewage
  • Online monitoring system for COD of high-concentration sewage
  • Online monitoring system for COD of high-concentration sewage

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Embodiment Construction

[0021] Such as figure 1 , 2 As shown, a high-concentration sewage COD online monitoring system includes a sampling system, a dilution water flushing system, a COD analyzer 1, and a PLC2. The sampling system includes a sequentially connected sampling water pipe 3 and a manual ball valve-4. , Y-type filter 5, electric ball valve three 6, three-way 18, sampling metering pump 7; the dilution water flushing system includes dilution water flushing water pipe 8 connected in sequence, manual ball valve two 9, electric ball valve one 10, dilution metering Pump 11; the output ends of the sampling metering pump 7 and the dilution metering pump 11 are respectively connected to the upper feed port of the mixing tank 12, and the COD analyzer 1 is sampled from the mixing tank 12; the bottom outlet of the mixing tank 12 is connected to the The electric ball valve two 14 is connected between the drain pipes 13, the third interface of the tee 18 is connected with a manual ball valve three 15 t...

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Abstract

The invention discloses an online monitoring system for COD of high-concentration sewage. The online monitoring system comprises a sample introduction system, a dilution water flushing system, a COD analyzer and a PLC, wherein the sample introduction system comprises a sample introduction water pipe, a manual globe valve I, a Y-shaped filter, an electric globe valve III, a tee and a sampling metering pump which are sequentially connected; the dilution water flushing system comprises a dilution water flushing water pipe, a manual globe valve II, an electric globe valve I and a dilution metering pump which are sequentially connected; an output end of the sampling metering pump and an output end of the dilution metering pump are separately connected into a mixing basin; an electric globe valve II is connected between a bottom drainage opening of the mixing basin and a water drain pipe, a third interface branch pipe of the tee is connected with a manual globe valve III, and the other end of the manual globe valve III is connected with the water drain pipe; the PLC is in control connection with all the electric globe valves, all the metering pumps and the COD analyzer and is electrically connected with an HMI. According to the online monitoring system for the COD of the high-concentration sewage, the online measurement of the COD of the high-concentration sewage is facilitated, and the measurement effect is stable and reliable.

Description

technical field [0001] The invention relates to a high-concentration sewage COD online monitoring system, which belongs to the technical field of environmental protection high-concentration wastewater treatment. Background technique [0002] As an important indicator of water quality pollution, COD is becoming more and more important in today's increasingly demanding environmental protection, accurate and reliable online measurement of COD content in sewage. Since the COD value of high-concentration sewage is far beyond the measurement range of the online instrument, it usually needs to be diluted first, and then measured. Because high-concentration sewage is relatively dirty and prone to sedimentation, conventional dilution devices are prone to blockage. There is an urgent need for a high-concentration sewage COD on-line monitoring system that can meet environmental protection requirements and operate reliably. Contents of the invention [0003] The purpose of the prese...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/18G01N1/38
CPCG01N1/38G01N33/1806
Inventor 何宏平丁丹
Owner EAST CHINA ENG SCI & TECH
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