(B) Infectious waste must be treated as soon as practicable by one of the following treatment methods in accordance with the regulations promulgated under this chapter and any other applicable state or federal law and regulations:

1. (1) incineration;
2. (2) steam sterilization;
3. (3) chemical disinfectant; or
4. (4) any other department-approved treatment method.

(D) The following infectious waste may be disposed of pursuant to regulation before treatment:

1. (1) an approved liquid or semi-liquid waste may be discharged directly into a department-approved wastewater disposal system; and
2. (2) recognizable human anatomical remains may be disposed of by interment.