Biology, 02.08.2019 16:00 student0724

What substances remain in wastewater after effective secondary treatment?

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Answer from: henrylauren2006

- The nitrates still exist after the second treatment of water waste and the way to remove it is:
by using the enzymes in the organisms like bacteria to gradual change the NO3 to N2 to finally be able to remove the nitrogen from it.

- The inorganic quality of the water is changed when the water is being used in a municipality; inorganic salts containing chlorides, sulfates, phosphates, potassium and sodium among those added.
-But it removes by varies methods after the secondary treatment of water like filtration, sedimentation, and activated carbon adsorption.

- It remains biological nutrient, and micropollutants, such as environmental persistent pharmaceutical pollutants.

- But the secondary treatment removing dissolved and colloidal compounds measured as biochemical oxygen demand (BOD).

- even after the primary and secondary treatment, disease-causing organisms may remain in the water.

- To disinfect and kill harmful organisms, the water spends a minimum of 15-20 min in chlorine-contact tanks mixing with sodium hypochlorite.

- The sludge produced by primary and secondary treatment is approximately 99 % water and must be concentrated to enable its further processing.

-Thickening tanks allow the sludge to collect, settle and separate from water up to 24 h. The water is then sent back to the head of a plant or to the aeration tanks for additional treatment.

Answer from: Quest

relative humidity, temperature and dew point -- are bound together in the mathematical relationship below. relative humidity changes when temperatures change. because warm air can hold more water vapor than cool air, relative humidity falls when the temperature rises if no moisture is added to the air. so i would say a

Hello everyone extra easy question for large amount of ! meh

Answer from: Quest

[ answer ]

foliated

[ explanation ]

foliation forms in a rock when pressure squeezes the rock together. the rock then has a design of many different color little lines. there are three types of foliated rock. the types are slate, schist, and gneiss. each type of foliated rock is different based on grain size and foliation characteristics. the lines appear when the rock has been under pressure.

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