Field Visit to Bang Pa-In Industrial Estate 29 August, 2014

Transcription

1 Field Visit to Bang Pa-In Industrial Estate 29 August, 2014 C. Visvanathan Environmental Engineering and Management Program Asian Institute of Technology Thailand

2 Location

3 Bang Pa-In Industrial Estate

4

5 EQ Tank Biological Treatment Polishing Pond Chemical Storage Sludge Drying Bed 1 Sedimentation Sludge Thickener 2 Sedimentation Landfill Sumps Screens & GC Incineratior

6 Objectives Industrial Estate Planning: Infrastructure and Environmental Management Planning Central Effluent Treatment Plant Understanding Waste (WW and Solid Waste) Treatment technologies. Eco- Industrial Planning: Issues and Concerns

7 IEAT Concept One Station Service One Window Concept General Industrial Zone Export Processing Zone General Facilities Electrical Substation- Secondary Generators Water Supply Telephone Lines Roads (wide) Flood Control System Wastewater Treatment Plant Solid Waste Management System Landscape Customs Office Wear House Training Center Security (24Hrs) Residence Recreational Facilities Expatriate Works Permits

8 Area Coverage Green Area % EPZ..% GIZ.. % Community Utilities Commercial and Residential % Infrastructure % Clean & Green Polluter Pay Principle Incineration Solid Waste Domestic Toxic Landfill

9 CEPT Industrial Pretreatment CEPT Green Belt: Area ( % of the Total Area) Water = 8 Baht/ M 3, WW = 8 Baht/ M 3 Standards Effluent Standards Sewer Standards 80% of water supply WW Hi Tech Food Processing

10 Wastewater Management :Bangpa-in Industrial Estate 1. Water Supply for Industrial Use 2. Wastewater 3. Wastewater Treatment Service Rate 4. Central Wastewater Treatment Plant 5. Operation Process 6. Operation and Maintenance Cost 7. Mornitoring and Measurement of Wastewater 8. Water Reuse

11 1. Water Supply for Industrial Use Present Source Raw water from Chaopraya River Capacity 48,000 m 3 /day (in order to comply with state policy) Average Comsumption Approximately 12,000 15,000 m 3 /day supplied to users covering an area of 1,176 rai or an average of 8.5 m 3 /rai/day

12 2. Wastewater 2.1 Wastewater All kinds of used water are considered as wastewater 2.2 Quality of Wastewater Quality of wastewater discharging into the central wastewater treatment plant has to comply with the IEAT regulation (for instance; BOD level must be not over 500 mg/l) 2.3 Quantiy of Wastewater Quantity of wastewater is approximately 80% of water supply

13 3. Wastewater Treatment Service Rate 1. BOD < 200 mg/l 7 Baht / m < BOD < 300 mg/l 8 Baht / m < BOD < 500 mg/l 9 Baht / m 3 4. BOD > 500 mg/l 20 Baht / m 3 5. Over IEAT Standard 20 Baht / m 3 6. Quantity of Waste Water 80 % of Water Supply

14 4. Central Wastewater Treatment Plant 4.1 Activated Sludge Capacity 18,000 m 3 /day 4.2 Cost of Investment Land 25 rai 40 mil. baht Civil Work 140 mil. baht Machinery 120 mil. baht Total 300 mil. baht (Remark: not including pipeline network)

15 6.Operation and Maintenance Cost Electricity for operation and pumplift 1.50 baht/m 3 Maintenance and Staff 1.50 baht/m 3 Environmental Monitoring 0.50 baht/m 3 Sludge Disposal 0.60 baht/m 3 IEAT regulation fee 0.35 baht/m 3 Administration 0.50 baht/m 3 Total 4.95 baht/m 3 (Remark: not including replacement cost)

16 7.Monitoring and Measurement of Wastewater Sampling Point Frequency (per month) Factory 1 Influent 1 Effluent 2 Pumping station 2 Influent Pumping station

17 B L D C Bangpa-in Land Development Co.,Ltd. Water Reuse Bangpa-in Industrial Estate has promoted water reuse in many areas; for instance; Watering green area, garden Cleaning road Use as raw water for production of industrialwater

18 Electrical Substation

19

20 Fire Hydrants..

21 Drainage Systems

22 Flood Protection Dykes

23

24 Ground Water Storage Tanks

25 Original WWTP Plan

26 Current BIE Wastewater Treatment Diagram

27 Operation Process Sludge Factory Waste water Grit Chamber Waste water Equalization tank Waste water (H2SO4) (NaOH) Neutralization Tank Waste Water Analysis Effluent Water Analysis Waste water Aeration Tank Primary Landfill Waste water Sand Drying Bed Sludge thickener tank Excess Sludge Bio-Activated Sludge Effluent Sedimentation Tank Sludge Cake Condensed Sludge Effluent Water Analysis Sludge Effluent Effluent Polishing pod Return Sludge Effluent Water Analysis

28

29 EQUALIZATION TANK SLUDGE DEWATERING HOUSE AEROBIC DIGESTER NO: 1 AEROBIC DIGESTER NO: 2 AEROBIC DIGESTER NO: 3 SLUDGE THICKENER NO: 1 SLUDGE SUMP NO: 3 SLUDGE THICKENER NO: 2 Discharge GRIT CHAMBER SLUDGE SUMP NO: 4/1 SLUDGE SUMP NO: 4/2 SLUDGE SUMP NO: 2 PUMP SUMP BAR SCREEN DRYING BED AERATION TANK NO: 1 AERATION TANK NO: 2 SEDIMENTATION TANK NO: 1 DISTRIBUTION BOX NO: 2 SEDIMENTATION TANK NO: 2 CHLORINE CONTROL TANK DISTRIBUTION BOX NO: 1 CONTROL HOUSE AERATION TANK NO: 3 SEDIMENTATION TANK NO: 3 SEDIMENTATION TANK NO: 4 CHLORINE HOUSE SLUDGE SUMP NO: 1 Hi-Tech Industrial Estate & CETP

30

31 Grit Chambers

32 EQ Tanks (7000 m 3 ) DT = 24 hours. What do you expect?

33

34 NaOH Storage Toxic Chemical Management..

35 Is it Used only by-pass why? Why this Height? Neutalization Tank

36 Bio-activated Sludge Original Biodrum Technology

37 Lower electricity cost.. No aeration? DT = hrs? ASP = 6 hours?

38 No Biofilm.. Attached Growth

39 Bio-activated Tanks Sedimentation Tank

40

41

42

43 Design Capacity = 12,000 m3/d Operation = 7,500 m3/d Un-used Sedimentation Tanks What is your views

44

45

46 Batch operation time: 10 days

47

48 Cl Contact Tank Is it used only a by-pass

49 12,000 m 3 Retention time: 1 day, Final BOD < 20 mg/l

50

51 3 B/Kg for Solid Waste Treatment Toxic & Haz Waste to Genco not by IEAT

52 Landfill? Are you happy

53 Treated Effluent

54 Wastewater Reuse

55 Average waste water Quality of Influent (Central Waste Water Treatment Plant) BOD(mg/L)

56 What are the Technical Implementation of over design of a WWTP? What you can do at the moment What you will do as a Manager?

57 Do s & Don ts for Field Visit No T-Shirt No High heels Don t forget Umbrella & Cap Ready to walk