Final answer:
The correct option is 1). The inaccurate statement is that solid materials in wastewater are treated by chemicals; instead, biological processes are often used in biotechnology. Biotechnology is applied to microbial degradation in wastewater treatment, which is essential for environmental protection and public health.
Step-by-step explanation:
The statement part that is not true about the use of biotechnology to treat solid materials and wastewater is that solid materials are treated by chemicals. In the context of biotechnology, treatment often involves biological processes rather than purely chemical ones. Biotechnology in the treatment of wastewater intricately utilizes microorganisms to break down organic and inorganic substances, which is different from chemical treatment. Also, solid materials are indeed present in wastewater, and biotechnology is indeed used to treat wastewater.
The wastewater treatment process includes primary treatment (solid removal), secondary treatment (bacterial decomposition), and tertiary treatment (extra filtration). Wastewater treatment primarily aims to remove solid and organic matter, kill harmful bacteria, and minimize environmental pollution. Biotechnological processes often involve the use of bacteria and other microorganisms to break down waste products and pollutants in wastewater, which can also include the digestion of solids to produce methane gas, a usable energy source.