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Industrial wastewater testing project

Industrial wastewater and sewage detection is a general term for the detection of wastewater, sewage, and aquatic organisms discharged by enterprises and factories during the production process.

Industrial wastewater and sewage detection includes production wastewater and production wastewater. According to the products and processing objects of industrial enterprises, they can be divided into papermaking wastewater, etching wastewater, textile wastewater, tannery wastewater, pesticide wastewater, metallurgical wastewater, printing and dyeing wastewater, refining wastewater, medical wastewater, etc.

Industrial wastewater testing items: pH, CODcr, BOD5, petroleum, LAS, ammonia nitrogen, chromaticity, total arsenic, total chromium, hexavalent chromium, copper, nickel, cadmium, zinc, lead, mercury, total phosphorus, chloride, fluoride, etc.

Domestic wastewater testing project

Domestic wastewater testing items: pH, chromaticity, turbidity, odor and odor, visible to the naked eye, total hardness, total iron, total manganese, sulfate, chloride, fluoride, cyanide, nitrate, total bacterial count, total Escherichia coli, free chlorine, total cadmium, hexavalent chromium, mercury, total lead, etc.

Preparation before collecting and sampling industrial wastewater samples:

(1) The selection principles for container preparation: the water sample is insoluble in the container, the container material does not adsorb certain components in the water sample, the water sample does not undergo direct chemical reaction with the container, and the principle of "similar solubility" of substances is avoided.

(2) Preparation of sampler: Select a suitable sampler and rinse thoroughly (three washes).

Transportation and storage of water samples:

1. The water sample should not be damaged or lost during transportation, and should be packaged, labeled, and sealed properly.

2. The container for storing water samples may adsorb and contaminate the water samples. Therefore, it is necessary to choose materials with stable performance and low impurity content as containers. Commonly used materials include borosilicate glass, quartz, polyethylene, and polytetrafluoroethylene, and the most commonly used are borosilicate glass and polyethylene bottles.

3. The transportation process requires prompt monitoring of vehicles, cars, ships, and even airplanes.