In relation to a waste water treatment plant which stage or process is related to fluids and particles?

In the sewage treatment process, one of the most important steps is the separation of liquids and solids, in this process, we can give several examples of processes:

1. Water-Oil Separation - oils are used to receive effluent and oil and grease contaminated water from maintenance areas, vehicle and machine washing and mechanical workshops. Water - oil separators employ physical methods and work by density, using the tendency of oil to float in water;

2. Decanting and Decanters - Decanting is a physical method of separation such as filtration, coagulation, flocculation, flotation, etc., working by density. Sludge settlers use lower settling rates;

3. Flotation - Flotation in effluent and water treatment separates liquids from solids with clouds of air microbubbles that drag suspended impurities to the surface facilitating removal;

4. Drag Column - Removal of Contaminant Gases - The removal processes of Ammonia, VOC's, Radon, Carbonic Gas (CO2) and BTEX and mainly water nitrogen are usually based on biological oxidation (nitrification-denitrification);

5. Water filters: Sand, Coal, Zeolites, MnO2, Anthracite, etc. - The waters contain salts, suspended solids, microorganisms and debris that must be removed. Filters generally remove particles and improve color, odor, and taste.

Normal skin, sickle cell disease, normal bone growth

Explanation:

Normally, dominant alleles are denoted in upper case, and recessive alleles are denoted in lowercase. Dominant alleles are always expressed if they are present, whereas for a recessive allele, 2 copies are required for it to be expressed.

We have a diploid genome., meaning we have two copies of every gene, one inherited from our mother and one from our father. These copies might represent different alleles (versions) of a trait, or they might be the same. If a person has 2 copies of the same allele, they are homozygous, if each copy of a gene has a different allele, they are heterozygous.

This person is homozygous at the A gene, having 2 copies of the normal skin colour. We assume since A is written in capitals that normal skin colour is the dominant trait and albinism is the recessive trait. This person has 2 copies of the normal skin trait so will have normal skin.

The person is homozygous for the c gene, having 2 copies of the sickle cell anaemia allele. There is no dominant allele present to mask the effects of the recessive sickle cell allele, so they will be affected by sickle cell disease.

The person is heterozygous at the E gene, with one copy of the allele for normal bone growth (E) and 1 copy of the allele for dwarfism (e). Again, because E is capital we assume it is a dominant trait, so the individual will have normal bone growth.