N.J. Admin. Code § 7:14A-23.18

Current through Register Vol. 56, No. 21, November 4, 2024

Section 7:14A-23.18 - Chemical coagulation

(a) This method of sewage treatment is considered to be a degree of treatment intermediate between sedimentation, and sedimentation plus oxidation. Chemical coagulation will not be considered as a substitute for oxidation.

(b) Coagulants shall be applied to the sewage in a suitable and approved form proportional to the sewage flow.

(c) A chamber or tank for the rapid and thorough mixing of the sewage and coagulants shall be provided with a detention period of not less than one minute based on design flow.

(d) Two or more flocculation tanks, with individual controls, shall provide a combined detention period of between 20 and 30 minutes. Diffused air or paddles with a slow rotary motion shall be provided for continuous agitation of the full content of the flocculation tanks.

(e) The automatic control of apparatus for feeding chemicals shall include equipment to provide variation in chemical dosage with variation in sewage flow.

N.J. Admin. Code § 7:14A-23.18