Port Saint Nicholas Hatchery

Project Goals

Provide 250,00 hatchery supplemented 1+ smolt chinook production for the Craig area egg through smolt

Ultimately production is geared to increasing sport catch in Craig area

Participants / Partners

Prince of Wales Hatchery Association

City Of Craig SSRAA - eyed eggs(Chickamin)

Program Funding

PSN Hatchery construction funded by SSF and community economic grant

Operational funding is from a combination of SSF, Craig salmon derby proceeds, charter operators donations, community support

Technology

Conceived as a complete incubation and rearing facility – benefits

Multi- mode operation as full flow through, partial reuse or limited flow and SSO2 (supersaturated oxygenated water) augmented.

Building

20’x60’ -prefab 20,000$ total package Split into four rooms with separate entries Incubation - with interior access from mechanical Mechanical Feed storage and shop area Small office with bathroom and shower City of Craig erected building and installed

electrical Also provided fill to grade and D-1 Slap was contacted and cement was at reduced

rate

mechanical incubation

20’ X 60’

feed storage

office

Water Supply

Via 12 mile single pipeline from a 100 acre lake at 600 feet elevation that supplies Craig water treatment plant – gravity flow – 12 inch main – 205 PSI – side-tapped with 8 inch to enter building at

proximity of water treatment plant – pressure reduced by 4 PRV’s inside mechanical

room. – Temperature fluctuations from 2C to 18C – Reasonably clean and silt free

Pressure Utilization • Pressure is reduced to 3 PSI levels for Hatchery

use • Process water reduced to 24 to 30 PSI through

main and back up water supply. (Variable) • SSO2 supply at variable 40 to 60 PSI to feed

oxygen contactor • - High pressure supply variable from 60 to 90 PSI --

- venturi introduction of oxygen to contactor - operates venturi system for degassing at column - offers a venturi option for suction wand attachments for mort removal

• high pressure water delivery to various points around the hatchery for high pressure cleaning.

Process Main

Process Backup

SSO2 Supply

High Pressure

210 PSI

24-30 PSI

24-30 PSI 60-90 PSI

60-90 PSI

Water supply manifold cross tied for PRV maintenance or emergency procedures

Oxygenation

• An oxygen generator provides oxygen for the SS02 system

• 35LPM Oxair with a compressor that can output finished product at 90 psi with an integral compressor at 95% purity.

• Self contained storage for O2 . • Back up is bottled 02 set in parallel slightly

under regulated output pressure of the O2 compressor on the Oxair 35 negating need for a solenoid to induce 02 in event of a failure

To obtain SS02 we need pressure regulated amounts of water and oxygen and pressure capable vessel (contactor)

O2 injection @90 PSI with mazzi injector

H20 @ 60PSI Pressure gauges and regulator

60 PSI PRV

90 PSI PRV

60 PSI delivery

SSO2 out

SSO2 takeoff to incubation

Drainage

• Built in waste scavenging system to clarify reuse water prior to re-circulation

• Cone or waste settling sump as part of drain system

• Purge pipe and valve to drain sump that redirects waste to settling pond

• Cone also helps alleviate concerns about downstream pollution effects

Drain

Perf screen

Velocity abatement screen

Drain to column

Waste purge line Waste scavenging cone

Drain valve for purge line

Main process water

SSO2

Conditioning Columns

• Each conditioning column is the basis for its own re-circulation unit

• Each column consists of a de-gasser, a reservoir, collector sump , standpipe sump, pump sump, electric submersible pump and variable speed controller

• Each column is also fitted with process water delivery, re-circulated water delivery, high pressure and venturi options as well as SSO2 injection into the reservoir.

Venturi degassing line

reservoir

SSO2 ring supply

Recirc line

Control box

SSO2

Pump sump

Venturi/HP

Main H2O supply

O2 gas

Waste purge line Collector

Standpipe sump

HP line

220 V 3hp Submersible

90 lbs..

Tuned impellers provide 600 GPM to 12ft. head

Digital variable frequency drive

Incubation

Features heated and chilled re-circulation Optional Heath Tray or Kitoi incubation Limited indoor rearing with troughs SSO2 supplementation HP wash-down

Construction Detail