Title

15 Liquid Polymer Pumps Start Up

The Belt Press Filter cannot operate without polymer conditioning. If the Dry Polymer System is out of service, the Liquid Polymer System must be put into service in order to continue the sludge dewatering process.
The Liquid Polymer System is typically used only when the Dry Polymer System is out of service. Liquid polymer is fed by one constant speed feed pump – there is no standby liquid polymer pump.
SOP Identification Number
SOP Identification Number:
1507_Liquid Polymer Pumps Start Up
Health & Safety Warnings
Health & Safety Warnings:

Watch for open tanks and high elevations. If working on or near equipment, watch for rotating parts. 

Cautions
Cautions:

Loss of polymer will impact flocculation of dewatering process

Personnel Qualifications
Personnel Qualifications:

Operator I, knowledge of dewatering process and equipment controls.

Equipment, Supplies, Required Tools
Equipment, Supplies, Required Tools:

Portable mixer for polymer tote and access to electrical outlet.

Quality Control/Quality Assurance Activities for the Procedure
Quality Control/Quality Assurance Activities for the Procedure:
  • Record activity to log book.
Procedure
Procedure:


The Belt Press Filter cannot operate without polymer conditioning. If the Dry Polymer System is out of service, the Liquid Polymer System must be put into service in order to continue the sludge dewatering process.

The Liquid Polymer System is typically used only when the Dry Polymer System is out of service. Liquid polymer is fed by one variable speed feed pump {tag no. 1507PMP/MTR/VFD5600} – there is no standby liquid polymer pump.

1.     Open Industrial Water Supply.

a.     Locate and open the Industrial Water valve {tag no. 1507VLV5395} on the suction side of the Liquid Polymer System. This unmarked valve is located on a vertical Industrial Water pipe on the north interior wall of the Dewatering Building.

2.     Open Suction Valves

a.     Open the Polymer Tote Valve {tag no. 1507VLV5600}

3.     Open Discharge Valve

a.     Open the discharge valve {tag no. 1507VLV5724 & 1507VLV5724C} associated with the Belt Filter Press that is currently in operation.  These unmarked valves are located on vertical pipes located on the north interior wall of the Dewatering Building.  The pipes are labeled “BP #1” and “BP#2”.

4.     Mix Polymer

a.     Install the Portable Polymer Mixer {tag no. 1507MXR5694} in tote and plug into the nearest electrical outlet.

5.     Start Liquid Polymer Feed Pump.

a.     Locate the Liquid Polymer Feed Pump Controller {tag no. 1507LCP5723} and plug into the nearest electrical outlet.

b.     Turn the HOA switch {tag no. 1507HS5723} to ON. This will activate the solenoid and begin to pull water.

c.     Adjust the pump speed {tag no. 1507HS5723B}.  The typical setting is 55 Hz.  Observe condition of dewatered sludge and make further adjustments to the pump speed if necessary.

Data & Records Management, Calculations, Forms, Reports
Data & Records Management, Calculations, Forms, Reports:
  • Update log book.
  • Update maintenance records (if applicable).
  • Report any maintenance or attention that is required.
Equipment
Equipment:

EQUIPMENT NAME

TAG NUMBER

Liquid Polymer Pump

1507PMP5600

Liquid Polymer Pump Motor

1507MTR5600

Liquid Polymer Pump Variable Frequency Drive

1507VFD5600

Liquid Polymer Pump Controller

1507LCP5723

Liquid Polymer Pump HOA Switch

1507HS5723

Liquid Polymer Pump Speed Switch

1507HS5723B

Industrial Water Valve

1507VLV5395

Discharge Valve

1507VLV5724

Discharge Valve

1507VLV5724C

Polymer Tote Valve

1507VLV5600

Portable Polymer Mixer

1507MXR5694

ID
Maintenance Connect