ONSITE WASTEWATER NATURAL TREATMENT AND EFFLUENT … Center/documents... · onsite wastewater natural treatment and effluent reuse system at the omnilife soccer stadium in guadalajara,

ONSITE WASTEWATER NATURAL TREATMENT

AND EFFLUENT REUSE SYSTEM AT THE

OMNILIFE SOCCER STADIUM

IN GUADALAJARA, MEXICO

BIOHABITATS

[email protected] Santa Fe, New Mexico

ALAN GARRIDO, M.Sc., EI Project Engineer

OBJECTIVES

• To describe operating units of the wastewater treatment

and reuse system

• To present advantages and disadvantages of decentralized

natural systems

• To discuss operating and maintenance culture after 3

years of operations.

LOCATION

1,270 mi 19 hours 30 minutes

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OMNILIFE SOCCER STADIUM AT GUADALAJARA, MEXICO

Guadalajara

Construction Phase

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OMNILIFE SOCCER STADIUM AT GUADALAJARA, MEXICO

“THE GREEN STADIUM”

WASTEWATER TREATMENT SYSTEM SELECTION CONSIDERATION

• Manufacturer reliability

• Power requirements

• Sludge generation

• Treatment robustness

• Quality Effluent

WASTEWATER TREATMENT UNITS

CONSTRUCTED WETLANDS

SAND FILTERS

TRICKLING FILTERS

• FULL EVENT DESIGN FLOW = 575 m3/d (152,000 GPD)

• EQUALIZED FLOW = 115 m3/d (30,400 GPD)

DESIGN FLOW

1. PRIMARY TREATMENT AND EQUALIZATION

• SETTLING AND ANAEROBIC SLUDGE DIGESTION.

• HRT > 2 DAYS

PRIMARY TREATMENT AND EQUALIZATION TANK CONSTRUCTION

200 mg/L

100 mg/L

MUNICIPAL

STADIUM

NITROGEN CONCENTRATION

BIOLOGICAL TREATMENT 2. TRICKLING FILTERS

• SOLUBLE BOD REMOVAL

• AMMONIUM NITRIFICATION

• AIR FLOW

• SLAUGHING SETTLING

TRICKLING FILTER CONSTRUCTION

BIOFILTER CONSTRUCTION

“CONSTRUCTED WETLANDS ARE SYSTEMS BUILT BY HUMANS

DESIGNED TO EMPHASIZE SPECIFIC CHARACTERISTICS OF THIS

ECOSYSTEM TO IMPROVE TREATMENT CAPACITY”

(Kadlec & Wallace, 2009).

3. SUBSURFACE FLOW CONSTRUCTED WETLAND

SUBSURFACE FLOW CONSTRUCTED WETLAND

• LEACHING CHAMBERS

• GEO-TEXTILES

• GEO-MEMBRANES

• GRAVEL

• WETLAND PLANTS

• CONTROL ARM

SUBSURFACE FLOW CONSTRUCTED WETLAND CONSTRUCTION

AREA = 743 M2 (2,437 SQFT) /CELL GRAVEL DEPTH = 0.85 M (<3 FT)

REUSE SYSTEM 4. RECIRCULATION SAND FILTER

• BOD < 10 mg/L

• TN < 10 mg/L

• TSS < 10 mg/L

• FC < 100 MPN/100 mL

RSF CONSTRUCTION

5. MECHANICAL FILTRATION AND DISINFECTION

• AGRICULTURAL IRRIGATION

• LANDSCAPE IRRIGATION

• INDUSTRIAL REUSE

• RECREATIONAL REUSE

• AQUIFER REPLENISHMENT

• TOILET FLUSHING REUSE

MECHNICAL FILTRATION AND DISINFECTION

EFFLUENT QUALITY

PARAMETER UNITS MAX LIMIT RESULTS

2010 RESULTS

2013 GREASE AND OIL mg/L 15 <7.4 9.04

TSS mg/L 20 <5 7 BOD mg/L 20 <1.98 3.96

ARSENIC mg/L 0.4 0.0129 0.0133

CADMIUM mg/L 0.4 <0.02 <0.02 CYANIDE mg/L 3 <0.01 <0.01

COPPER mg/L 6 <0.05 <0.05

CHROMIUM mg/L 1.5 <0.1 <0.1

MERCURY mg/L 0.02 <0.002 <0.002 NICKEL mg/L 4 <0.05 <0.05

LEAD mg/L 1 <0.1 <0.1 ZINC mg/L 20 <0.1 <0.1

HELMINTH EGGS No. Huevos /L 1 <1 <1 FECAL COLIFORMS NMP/100 mL 240 3 <3

SOURCE:

ANASA - Análisis de Agua, S.A. de C.V.

CONTROL PANEL AND TELEMETRY

NATURAL SYSTEMS ADVANTAGES

CONSTRUC. ACTIVATED MEMBRANE UNITS WETLAND SLUDGE BIOREACTOR

CAPITAL COST $USD/gallon 5 - 7 8 - 10 7 - 10 SLUDGE GEN. L/m3 0.5 10 8 ENERGY REQ. kWh/m3 0.21 0.9241 1.1351

1. Metcalf & Eddy, 2003

TREATMENT SYSTEM SLUDGE GEN. L/yr

NATURAL SYSTEM 20,988 ACTIVATED SLUDGE 419,750

TREATMENT SYSTEM SLUDGE GEN. kWh/yr

NATURAL SYSTEM 8,815 ACTIVATED SLUDGE 38,785

DECENTRALIZED NATURAL WASTEWATER TREATMENT SYSTEM AT THE

OMNILIFE SOCCER STADIUM CONCLUSIONS

• HABITAT GENERATION

• SITE AESTHETICS

• CARBON SEQUESTRATION

• OXYGEN GENERATION

• LOW ENERGY REQUIREMENTS

• SIMPLE TO OPERATE AND MAINTAIN

• LOW SLUDGE GENERATION

• HIGH WATER QUALITY

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