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What are the layout principles of pollution source sewage monitoring points?

Layout principle

The sampling point of the first kind of pollutants should be located at the discharge port of the workshop or workshop treatment facilities or the discharge port of the facilities specially dealing with this kind of pollutants.

The sampling point of the second kind of pollutants is located at the sewage outlet of the pollutant discharge unit.

Sewage sampling points entering centralized sewage treatment plants and urban sewage pipe networks shall be determined according to the requirements of local environmental protection administrative departments.

Arrangement of sampling points for efficiency monitoring of sewage treatment facilities

When monitoring the efficiency of the whole sewage treatment facility, sampling points should be set at each sewage inlet and total discharge outlet of the sewage treatment facility.

When monitoring the efficiency of each sewage treatment unit, sampling points are set at each sewage inlet and outlet of the treatment facility.