we test if the waste is acidic
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Answer:
Generally, the nature of the industrial activity drives the pH of a wastewater, as stated by Teresa, mining process could result in acid drainage.
Mostly, the cleaning process within the industry or waste treatment process cause acidity or alkalinity. Wine industry wastewater could be alkaline and could contain high amount of sodium. DAF waste treatment process may use lime as an acid neutralising agent which will result in alkaline wastewater. Skin processing industry generally produces alkaline and salty wastewater. Dairy industry does use both strong caustic and acidic detergents and depending on the end process dairy factory (e.g. cheese) wastewater could be acidic or alkaline. Some wastewaters may be neutral but when decompose in soil will become acidic (e.g. whey).
Having said the above, I do not consider any of the above (except for mining drainage) pose any significant pollution issue in soils, should such wastewaters being irrigated onto soils. There are soil conditioners that can alleviate any acidic or alkaline build up in soils. If the wastewater is irrigated at the correct rate and soil is managed accordingly most wastewaters can be sustainably used in soils, taking into account of any heavy metal accumulation.please mark me as Brainliest answer