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Defoaming solutions for water treatment


Type of water treatment

There are two types of water pollution sources: point source and non-point source

(1) Point source: industrial wastewater, urban domestic sewage and livestock and poultry farm wastewater

(2) Non-point source: seepage from landfill, tailings seepage, etc.

Wastewater pollution source: solid, refers to suspended solids.

For example: hydraulic ash washing, coal washing, metallurgy, slaughtering, fertilizer, chemical industry, construction, industrial wastewater, domestic sewage, etc.

(1) Industrial wastewater: papermaking, textile, printing and dyeing, coking, cooling, tanning, metallurgy, chemistry, food, painting...

(2) Domestic sewage: excrement water, bath water, washing water, flushing water

(3) Agricultural sewage: animal husbandry, irrigation...

Bubble generation process includes sewage discharge, recycling, biochemical treatment.

Defoamer requirements:

Water pollution is manifested in the increase of COD and BOD concentrations in water;

COD (Chemical Oxygen Demand): refers to the amount of oxidant required to oxidize the oxidizable substances in the water sample under specified conditions;

BOD (Biochemical Oxygen Demand): refers to the amount of dissolved oxygen consumed in the process of biochemical reactions carried out by microorganisms decomposing biodegradable organic matter existing in water under certain conditions.

(1) Discharged sewage: silicone defoame,about 10 ppm

(2) Circulating water: It is required the good antifoaming performance (good foam inhibition performance),using silicone antifoaming agent, about 200 ppm

(3) Biochemical treatment of sewage: Silicon-free defoamer is required, such as polyether, alcohol ether, higher alcohol, mineral oil, ethanol

How to use water treatment defoamer:

(1) Dilution: dilute at 10 times or 20 times, etc.

(2) Directly added: directly added to the pool.

(3) Adding method: manual and pumping

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