Wastewater Pretreatment 101

Transcription

1 Wastewater Pretreatment 101 1

2 Taken from: Introduction to the National Pretreatment Program U.S. Environmental Protection Agency,

3 Timeline of Federal Pollution Control Laws 1899 The Rivers and Harbors Act 1912 The Public Health Service Act 1965 The Oil Pollution Control Act 1966 The Clean Water Restoration Act 1970 The Water Quality Improvements 1970 EPA created (December 1970) 1972 Federal Water Pollution Control Act 1977 Clean Water Act 1987 Water Quality Act AKA: The Clean Water Act Cuyahoga River Fire

4 NPDES (Permit) Direct Discharge Pretreatment Program: Indirect Discharge CWA Sections 307, 402, 318 & CFR 403 4

5 National Pretreatment Program Objectives: (40 CFR 403.2) Prevent introduction of pollutants that interfere with operation of the Publicly Owned Treatment Works (POTW) Prevent introduction of pollutant that will pass through the treatment works Improve opportunities to reuse wastewater and biosolids 5

6 Interference and Pass Through A discharge that Including an increase in the magnitude or duration of a violation. Alone or in conjunction with another discharge From other sources Causes a violation of the POTW s NPDES permit 6

7 CWA Section ? 33 USC 1251 et seq.? The Clean Water Act? 40 CFR subchapters D, N and O (parts , and )? 7

8 CWA Section USC 1251 et seq. Openclipart.org Publicdomainpictures.net The Clean Water Act EPA 40 CFR subchapters D, N and O (parts , and ) Commons.wikimedia.org 8

9 Section Title 40 Paragraph a Openclipart.org 40 CFR 403.5(a) Code of Federal Regulation

10 General pretreatment regulations don t provide POTW s legal authority They set minimum legal requirements. CoolClips.com Federal: General Pretreatment Regulations Set Minimum Requirements State: State Laws Confer Minimum Legal Authority Local: SUO or similar 10

11 The National Pretreatment Program Protects POTW s from types and amounts of pollutants they were not designed to treat Water Reclamation Facility

12 Toxic Pollutants CWA section 307(a); 40CFR Pipe-Coal Ash 12

13 Priority Pollutants: 40 CFR 423 Appendix A 126 Priority Pollutants 4,249 waterbodies with unsafe levels of toxic organics 13

14 The National Pretreatment Program: A government program that works. Yamhill River 14

15 General Pretreatment Regulations 40 CFR 128 Pretreatment Standards

16 The General Pretreatment Regulations 40 CFR 403.8(a) Pretreatment program required for POTWs with: Design flow greater than 5 MGD Smaller POTWs in defined circumstances SIU Water Reclamation Facility

17 Significant Industrial User: 40 CFR 403.3(v) Kaiser Aluminum Plant Smokestack Subject to Federal Categorical Pretreatment Standards Designated by POTW for reasonable potential to affect treatment Hydraulic loading is 5% or more Organic loading is 5% or more Discharge average 25,000 gpd or more to POTW 17

18 Roles and Responsibilities EPA headquarters IU EPA Regions Control Authority Approval Authority 18

19 Pretreatment Standards Three types of National Pretreatment Requirements: Prohibited Discharge Standards Local Limits Publicdomainpictures.net Effluent Guidelines and Categorical Pretreatment Standards 19

20 Prohibited Discharge Standards Pipe from Sanbruno explosion General Prohibitions Specific Prohibitions 40 CFR 403.5(a) 40 CFR 403.5(b) 20

21 Effluent Guidelines & Categorical Standards Development Greatest reduction of pollutants economically achievable 21

22 Effluent Guidelines Apply to Direct Dischargers through NPDES system Not a pretreatment concern. 22

23 Categorical Pretreatment Standards 40 CFR Parts Apply to Indirect Dischargers discharging to POTW Pretreatment Standards for New Sources (PSNS), or Pretreatment Standards for Existing Sources (PSES) 40 CFR 403.3(m) 23

24 Categorical Standards 40 CFR Greatest reduction of pollutants economically achievable 24

25 Effluent Guidelines, Pretreatment Standards for Existing Sources or Pretreatment Standards for New Sources? If it starts with P, it s for me. 25

26 Local Limits 40 CFR 403.5(c) 40 CFR 403.8(f)(4) and 40 CFR (j)(4) Specifically address existing or potential problems at the local level 26

27 Maximum Allowable Headworks Loading (MAHL): Protects POTW from pass through and interference 27

28 Maximum Allowable Industrial Loading (MAIL): Protects POTW from pass through and interference 28

29 MAIL needed if: Average toxic pollutant loading to headworks is greater than 60% MAHL Maximum daily toxic pollutant loading to headworks is greater than 80% MAHL BOD5, TSS or ammonia monthly average loading to influent reaches 80% design capacity any time in prior 12 months 29

30 Other local limits approaches besides allocation Give the POTW flexibility in addressing specific local concerns 30

31 Summary 31

32 Contact: Matt Young: City of McMinnville, Wastewater Services:

33 Works Cited: 40 CFR 128 Pretreatment Standards-1973: Federal Register, Vol. 38, No. 215 Thursday, November 8, Bryan. Close Up Pictures of Gas Line Explosion Damage. 2010, Wikimedia Commons Cartoon Man With Clipboard. publicdomainpictures.net. Web. 7 Apr City of McMinnville, various photos clipart.coolclips.com/480/vectors/tf05243/coolclips_vc png clipart-library.com/clipart/ htm Constantine,. "USC (law) or CFR (rule)_ - Straight Dope Message Board." The Straight Dope. Sun- Times Media, LLC, Web. 1 Apr Cuyahoga River Fire Clark, Kylienne A., et al. "4.1 The Burning River- Aquatic Pollution in America s Rust Belt." Environmental ScienceBites, Ohio State University Pressbooks Sites, osu.pb.unizin.org/sciencebites/chapter/the-burning-river-aquatic-pollution-in-americas-rust-belt/. Accessed 21 Feb "How to Find Laws and Regulations." uspto, United States Patent and Trademark Office, 25 Aug Messina, John. KAISER ALUMINUM PLANT SMOKESTACK SPREADS FUMES ABOVE ST CLAUDE AVENUE IN THE CHALMETTE SECTION. 1973, Wikimedia Commons. Munro, Catherine. Bookshelf. commons.wikimedia.org. Web. 7 Apr US U.S. Environmental Protection Agency. Introduction to the National Pretreatment Program. E- book ed. pdf, U.S. EPA,