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BAI Engineering - Case Study
Feb. 24, 2026- By: Xuehua Bai
Courtesy ofAquafix, Inc.
Purpose
The purposes of this technical memorandum are briefly outlined as:
- To evaluate the wastewater discharge payment method used by Metro Wastewater Reclamation District (METRO).
- To develop a wastewater discharge payment model applied to Industrial Park Water and Sanitation District (District).
- Based on the wastewater discharge payment model (Payment Model), to predict the District’s wastewater discharge payments for the pilot water quality improvement project that is currently performed at Ivy Lift Station. Five water quality data were collected. They are the BOD, TSS, and TKN data collected on March 21, 2019, May 10, 2019, May 15, 2019, May 21, 2019, and August 7, 2019.
- To determine if the Pilot water quality program is recommended to the District-wide application.
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Wastewater Discharge Payment
The amounts wastewater discharge payments to the District are keep rising as shown in Table 1. The payment is calculated based on five wastewater qualities, including wastewater flow (Flow), biological oxygen demand (BOD), suspended solids (SS), Total Kjeldahl Nitrogen (TKN), and Metering and Sampling (CECU). METRO determines a unit charge for each parameter each year. The breakdown of the unit charge from METRO is also shown below in Table 1.