PCO Help Center

Book an ocular. Get answers on BOD, ammonia, phosphates, surfactants, coliform, odor, sludge, and reuse.

👷 Book a Site Visit
We do oculars in Cebu and Metro Manila. We check footprint, flow, odors, sampling points, and discharge line.
👉 Schedule an Ocular

📍 What Class Am I?
Your discharge class depends on the receiving water body. Rivers/drainage = Class C. Coastal or recreational = Class SB/SC. We confirm and design to pass.
👉 See Compliance & Standards

🧪 What to Test (Minimum Set)
BOD, COD, TSS, NH₃-N, PO₄-P, pH, Oil & Grease, Surfactants, Fecal Coliform. Add NO₃-N and DO when nitrification is expected.
👉 Upload Lab Report

⚙️ Quick Answers
• Air for BOD ≈ 1.0–1.2 kg O₂/kg BOD removed. Maintain DO ≈ 2 mg/L.
• COD vs BOD — COD shows total load; BOD is for compliance.
• FOG — clean grease trap daily; avoid emulsifiers.
• Odor — mix anoxic zones and ventilate.
• Coliform — clarify first, then disinfect with proper contact time.
• Grow sludge — seed + nutrients + steady aeration; probiotics help tropical treatment systems.
• Clarify final tank — control overflow rate, add tube settlers if tight on space.
• Reuse — non-potable only with low TSS + disinfection.

💬 Need Help Now?
👉 Get a Wastewater Proposal