disadvantages of biological treatment

Does biological wastewater treatment remove chemicals?
Although biological wastewater treatment is efficient in removing most organic contaminants, studies indicate that some chemicals, such as pharmaceuticals, detergents, cosmetic and industrial compounds, still remain after biological wastewater treatment. Filters and new technologies may be able to address this problem.
Can biological treatments cause allergic reactions?
Because biological treatments are large proteins pharmed from mice, allergic reactions can occur. Patients should be monitored for allergic reactions. Mild allergic reactions can be mitigated with antihistamines. Immune reactions may result in loss of efficacy of the biological treatment.
What are the pros and cons of biological treatment?
Wastewater facilities use aerobic, anaerobic or both types of microbes. The pros and cons of biological treatments depend partly on the origin of wastewater and its type of contamination and applied methods. Some methods, such as membrane filtration, subsequent to biological treatment, may improve outcomes.
Why are biological treatments important?
Biological treatments are especially useful because they tweak only one part of the immune system, rather than suppressing the entire system. Biological treatments can often rapidly improve refractory skin conditions such as psoriasis, atopic eczema, and urticaria. What are the disadvantages of biological treatments?

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