City of Moscow University of Idaho Water Reclamation and Reuse Program

Transcription

1 City of Moscow University of Idaho Water Reclamation and Reuse Program Association of Idaho Cities 2017 Annual Conference Les MacDonald, P.E. Moscow Director of Public Works

2 HISTORY OF WWTP EFFLUENT REUSE SYSTEM City approves development of WWTP Effluent Reuse system with UI in June 1976

3 HISTORY OF WWTP EFFLUENT REUSE SYSTEM City approves development of WWTP Effluent Reuse system with UI in June 1976 Interagency Agreement Executed in June 22, 1977

4 INTERAGENCY AGREEMENT The City of Moscow and the University of Idaho recognize the necessity of implementing the following goals:

5 INTERAGENCY AGREEMENT The City of Moscow and the University of Idaho recognize the necessity of implementing the following goals: 1. Conservation of underground water supply in the Moscow basin for domestic use

6 INTERAGENCY AGREEMENT The City of Moscow and the University of Idaho recognize the necessity of implementing the following goals: 1. Conservation of underground water supply in the Moscow basin for domestic use 2. Reduction of electrical energy required for pumping of water

7 INTERAGENCY AGREEMENT The City of Moscow and the University of Idaho recognize the necessity of implementing the following goals: 1. Conservation of underground water supply in the Moscow basin for domestic use 2. Reduction of electrical energy required for pumping of water 3. Reduction of fertilizer requirements for large irrigated green areas

8 INTERAGENCY AGREEMENT The City of Moscow and the University of Idaho recognize the necessity of implementing the following goals: 1. Conservation of underground water supply in the Moscow basin for domestic use 2. Reduction of electrical energy required for pumping of water 3. Reduction of fertilizer requirements for large irrigated green areas 4. Improvement in the quality of discharged sewage effluent

9 INTERAGENCY AGREEMENT The City of Moscow and the University of Idaho recognize the necessity of implementing the following goals: 1. Conservation of underground water supply in the Moscow basin for domestic use 2. Reduction of electrical energy required for pumping of water 3. Reduction of fertilizer requirements for large irrigated green areas 4. Improvement in the quality of discharged sewage effluent 5. Creation of a long-term uninterruptable source of irrigation water.

10 OPERATION OF WATER RECLAMATION & REUSE SYSTEM Diversion of Flow after Dechlorination Operation

11 OPERATION OF WATER RECLAMATION & REUSE SYSTEM Diversion of Flow after Dechlorination Operation Delivered to University Holding Facilities

12 OPERATION OF WATER RECLAMATION & REUSE SYSTEM Diversion of Flow after Dechlorination Operation Delivered to University Holding Facilities Further Treatment by University

13

14

15 OPERATION OF WATER RECLAMATION & REUSE SYSTEM Diversion of Flow after Dechlorination Operation Delivered to University Holding Facilities Further Treatment by University Distributed to University Campus

16

17

18

19

20 Irrigates ~ 80 85% of the Campus Open Space.

21 MILLIONS OF GALLONS CITY OF MOSCOW WWTP EFFLUENT VOLUMES WWTP DISCHARGE JANUARY FEBRUARY MARCH APRIL MAY JUNE JULY AUGUST SEPTEMBER OCTOBER NOVEMBER DECEMBER

22 MILLIONS OF GALLONS CITY OF MOSCOW WWTP EFFLUENT VOLUMES WWTP DISCHARGE UI REUSE JANUARY FEBRUARY MARCH APRIL MAY JUNE JULY AUGUST SEPTEMBER OCTOBER NOVEMBER DECEMBER

23 MILLIONS OF GALLONS CITY OF MOSCOW WWTP EFFLUENT VOLUMES WWTP DISCHARGE UI REUSE JANUARY FEBRUARY MARCH APRIL MAY JUNE JULY AUGUST SEPTEMBER OCTOBER NOVEMBER DECEMBER IMPACTS?

24

25

26

27

28 Total Pumped in 2016 = 2.4 Billion Gallons Production Reduction from 2015 of 4.8%

29 2016 WWTP Total Flow = MG AQUIFER IMPACTS

30 2016 WWTP Total Flow = MG AQUIFER IMPACTS 2016 Reuse System Total Flow = 83.5 MG

31 AQUIFER IMPACTS 2016 WWTP Total Flow = MG 2016 Reuse System Total Flow = 83.5 MG 13.8% WWTP Effluent Reused

32 AQUIFER IMPACTS 2016 WWTP Total Flow = MG 2016 Reuse System Total Flow = 83.5 MG 13.8% WWTP Effluent Reused 2016 University Domestic Production = 150 MG

33 AQUIFER IMPACTS 2016 WWTP Total Flow = MG 2016 Reuse System Total Flow = 83.5 MG 13.8% WWTP Effluent Reused 2016 University Domestic Production = 150 MG 83.5 MG Reuse Water = 35% of Total UI Water Consumption

34 AQUIFER IMPACTS 2016 WWTP Total Flow = MG 2016 Reuse System Total Flow = 83.5 MG 13.8% WWTP Effluent Reused 2016 University Domestic Production = 150 MG 83.5 MG Reuse Water = 35% of Total UI Water Consumption 35% Reduction in UI Demand upon the Aquifer System.

35

36 234

37 234

38 36% Reduction 234

39

40 59% Reduction

41 Total Pumped in 2016 = 2.4 Billion Gallons Production Reduction from 1992 of 12.5%

42 Total Pumped in 2016 = 2.4 Billion Gallons Production Reduction from 1992 of 12.5% Population Increase from 1992 of 25%

43 Questions? Les MacDonald, P.E