RESTRICTED URBAN REUSE OF KONYA (TURKEY) MUNICIPAL WASTEWATER TREATMENT PLANT EFFLUENTS VIA RECLAIMED WATER DISTRIBUTION SYSTEM

Transcription

1 KONYA METROPOLITAN MUNICIPALITY KONYA WATER&SEWERAGE ADMINISTRATION GENERAL DIRECTORATE RESTRICTED URBAN REUSE OF KONYA (TURKEY) MUNICIPAL WASTEWATER TREATMENT PLANT EFFLUENTS VIA RECLAIMED WATER DISTRIBUTION SYSTEM Prof. Dr. Mehmet Emin AYDIN Konya N. Erbakan Ünv. Assoc. Rector Dr. Serdar KOYUNCU, Ph.D KOSKİ Wastewater Treatment Plants Manager Urban Water Management and Water Demand Management Mai. 16 h -20 th 2014 Antalya, Turkey

2 KONYA WASTEWATER TREATMENT PLANT PILOT PLANT OPERATING DATA FIRST PHASE ADVANCED TREATMENT PLANT RESULTS

3 KONYA WASTEWATER TREATMENT PLANT The reclaimed water samples were collected from effluents of municipal wastewater treatment plant (WWTP) in Konya, Turkey. Konya WWTP has a capacity of 200,000 m 3 /day in I. Stage (2015) II. Stage (2030) Population Flow, m 3 /day Konya WWTP design influents and effluents quality. Parameters Influents Effluents BOD 5 (mg/lt) 320 < 20 TSS (mg/lt) 295 < 20 COD (mg/lt) 775 < 90 ph TN (mg/lt) 50 - TP (mg/lt) 15 -

4 Administrative Building

5 KONYA MUNICIPAL WASTEWATER TREATMENT PLANT Konya WWTP is designed for 1 million person equivalent and m 3 /day. 5

6 Konya WWTP has been designed for carbon and partial nitrogen removal. After biological treatment, the treated water will be disinfected by ultraviolet disinfection unit before it is disharged. Phosphorus removal is taken into. consideration in addition to carbon and nitrogen removal for further extension in order to fulfill EU disharge standarts. 6

7 Konya wastewater treatment plant flow diagram 7

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9 Primary treatment units Konya urban WWTP was put into operation in Coarse screen (40 mm) 3 Coarse (15 mm) and fine screens (6 mm) 2 Pumping station 4 Aerated grit and grease removal unit 9

10 Primary treatment units Primary sedimentation tanks 2 Sludge pumping station 10

11 Biological treatment units Aeration tanks/activated sludge reactors (Bardenpho process) 2 Blower building 3 Secondary sedimantation tanks 11

12 Tertiary treatment unit UV disinfection channel 2 Final effluent channel 12

13 Tertiary treatment unit UV disinfection channel 13

14 Sludge treatment, biogas production and energy recovery units Sludge thickeners 3 Biogas storage tanks 2 Mesophilic anaerobic sludge digesters 4 Sludge dewatering 14

15 Sludge treatment, biogas production and energy recovery units Main transformator building 2 Cogeneration system 15

16 Konya WWTP Inlet and Outlet water value Parameter Unit Inlet Outlet Limit Value BOI 5 mg/l < 40 KOI mg/l < 120 AKM mg/l < 40 TN mg/l TP mg/l 14 4,5 - ph - 7,8 7,9 6-9

17 On-Line Control Unit Flow-pH-Oxygen Temperature- Conductivity

18 Production of biogas values and energy recovery Parameter Unit Process Specific gas production rate m 3 /kg VSSgid The total amount of biogas production m 3 /gün The property, electricity consumption kwh/gün The electrical energy generated kwh/gün Electric Conversion Rate % 72

19 Biogas Treatment Desulphurization Gas Tanks 19

20 PURPLE NETWORK PROJECT

21 Reuse of Konya WWTP effluents was intended for irrigation of urban green areas (parks, landscaping area, refuge, etc.) after the advanced (tertiary) treatment.

22 PILOT PLANT (2 m 3 /h)

23 1) Multimedia Filter, MMF (Pressure sand filter) 2) Microfiltration (MF) 3) Ultrafiltration (UF) 4) UF chemical washing tank 5) Dosing systems

24 1a) MMF Automation system 4a) UF washing pumps 6a) UV control

25 Classification of treated wastewater for irrigation in Turkey Types of Reuse Types of Treatment Reclaimed water quality All types of landscape irrigation, (e.g., golf courses, parks) Class A Urban Reuse -Secondary -Filtration -Disinfection ph =6-9 BOD 5 20 mg/l Turbidity 2 NTU No detectable fecal coli/100 ml 0.5 mg/l Cl 2 residual Restricted Access Area Irrigation Class B Restricted Access Area Irrigation -Secondary -Disinfection ph =6-9 BOD 5 30 mg/l TSS 30 mg/l 200 fecal coli/100 ml 0.5 mg/l Cl 2 residual

26 FIRST PHASE ADVANCED TREATMENT PLANT RESULTS (150 m 3 /h) Reuse of Konya WWTP effluents was intended for irrigation of urban green areas (parks, landscaping area, refuge, etc.) after the advanced (tertiary) treatment. Using the pilot plant operating data, first phase advanced treatment plant was constructed in 2012 with a capacity of m 3 /day by KOSKI for reuse of wastewater. Advanced treatment plant consists of coagulation-pressure sand filtration, pre-chlorination, final-chlorination and UV disinfection units. Fecal coliform, turbidity, SS, BOD 5 and residual chlorine were monitored in full scale plant.

27 Reclaimed water storage tank Advanced Treatment Plant Secondary Treatment Effluent storage tank

28 Multimedia sand filtration UV disinfection post cholorination Pre cholorination Coagulant

29 Purple pipe network irrigation area The results of the SS, turbidity, BOD, fecal coliforms and residual chlorine removal efficiency in advanced treatment plant Parameter Advanced treatment plant influent Effluents after pre&post chlorination, MMF and UV disinfection Reclaimed water quality, All types of landscape irrigation, Class A Reclaimed water quality, Restricted access area irrigation Class B ph Turbidity (NTU) SS (mg/lt) BOD (mg/lt) Fecal Coliforms (CFU/100 ml) Residual Chlorine (mg/l Cl 2 ) 1.7x

30 Purple Pipe Network The advanced treatment plant constructed at the end of the WWT plant of Konya city, and the network of the distribution of the treated water to the irrigation area is called as Purple Pipe Network. In the part of the project, a reuse of treated water plant and its related extension was build with the capacity of 3600 m 3 /day, together with 1500 m 3 storage tank and about 24 km pipe length (ø90- ø200- ø315). So that, approximately 3.2 million m 2 land was irrigated with the reclaimed water in the summer months of the year of 2012, 2013 and 2014.

31 Purple Pipe Network of Konya City

32 (ø90- ø200- ø315) Purple Pipe Network Application Project (1. PHASE)

33 Before Purple Pipe Network

34 Application of Purple Pipe Network Drip Irrigation

35 Thanks for your listening. Prof. Dr. Mehmet Emin AYDIN Konya N. Erbakan Ünv. Assoc. Rector Dr. Serdar KOYUNCU, Ph.D KOSKİ Wastewater Treatment Plants Manager Jan. 20 th 2012 Konya, Turkey 35