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TL-130

 

This photo shows various sizes of Vanton

PVC tank/pump systems used to safely

handle plating, chemical cleaning and

other corrosive plant wastes. All units

are skid mounted, with pumps, valves,

controls and piping installed so that

the systems can be put into operation as

soon as external electrical connections

and piping hook-ups are made. All pumps

feature a cantilevered shaft design,

which eliminates the need for shaft

sleeve bearings in solution. The

integral pump/motor shafts are supported

by large diameter, oversized bearings in

hollow shaft motors.

These Vanton PVC tank/pump systems stand

66" high, 78" long and 26" wide. The

48" cantilevered shafts of the two

Vanton SGH sump pumps are housed in

heavily ribbed PVC columns to provide

the extra rigidity required. The pumps

are driven by 5 HP, 1750 RPM hollow

shaft motors and deliver 120 PGM at 40'

TDH.

PVC Tank/Pump Systems

Handle Corrosive Waste

INDUSTRY:

ENTITY:

SOLUTION(S) PUMPED:

PUMP TYPE(S):

Metal Finishing

 

Chromic acid, Hydrochloric acid, Hydrofluoric acid, Nitric

Non-metallic Tank Pump Systems

 

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Reprinted from POLLUTION ENGINEERING INTERNATIONAL

 

A manufacturer of military equipment faced a difficult waste-handling

problem because of the many corrosive electroplating and metal

finishing solutions held in the processing areas.

 

Extreme temperature variations and environmental elements also were

of concern. Site temperatures ranged from slightly below freezing to

44°C. Some of the waste collection sumps were kept outdoors, where

they were exposed to direct sunlight. In addition, humidity readings as

low as 9 percent were common.

 

The metal finishing rinse waters collected in the sumps ranged in pH

from two to seven. They included varying percentages of chromic acid

sodium dichromate, nitric acid, hydrochloric acid, sulfuric acid,

hydrofluoric acid and phosphoric acid.

 

To handle the waste, the manufacturer needed a tank/pump system that

would withstand corrosion and exposure to the elements.

The design-engineering firm for the project recommended that all

fluid-contacting components, including tanks, pumps, valves, pipes and

fittings, be constructed of solid, homogeneous thermoplastic. Metallic

construction (stainless steel) was ruled out almost immediately because

of anticipated problems with corrosion, maintenance, galling or seizing

of threaded connections, and high initial cost.

 

Although polypropylene pumps and valves tend to be slightly less

expensive than polyvinylchloride (PVC), the latter is more suitable for

handling oxidizing acids such as chromic and nitric acids. Tensile and

compression strength also are high, providing the rigidity needed for

the tanks. Outdoor units were painted with an ultraviolet-inhibiting

white finish.

 

System Design

 

The system consisted of 11 PVC tanks, each fitted with two heavy-duty

sump pumps from Vanton Pump and Equipment Corp., Hillside, N.J.

The pumps were driven by hollow-shaft motors, which were protected

from corrosive fumes by vapor seals. The stainless steel shaft was

completely isolated from fluids by a thick-sectioned PVC sleeve, and

exposed motors and motor brackets were coated in epoxy.

 

Tanks were constructed of solid ½-inch-thick PVC sheets, and a 1

¼-inch-thick bolted PVC cover supported the two sump pumps and

float controls. Stainless steel lifting lugs at the four corners facilitated

handling.

 

Each skid-mounted tank/pump unit contained pumps, a motor, valves,

level controls and piping. Only external connections and wiring needed

to be added to make the units operable. A duplex pump control panel

housed the fuse disconnect switch, magnetic motor starters, on/off

indicating lights, transformer and relays.

 

The units handle a broad range of materials and pH levels, and resist

corrosion. Other features of the system included automated operation

and easy maintenance.

Copyright 2016 - Vanton Pumps (Europe) Ltd - All rights reserved

About Us

In the 1950, Vanton developed a revolutionary all-plastic pump for use in conjunction with the first heart-lung device. The design limited fluid contact to only two non-metallic parts: a plastic body block and a flexible liner. This was the birth of our Flex-I-Liner rotary pump. Its self-priming sealless design made it an industry standard for the handling of corrosive, abrasive and viscous fluids as well as those that must be transferred without contaminating the product. Vanton now offers the most comprehensive line of thermoplastic pumps in the industry.

 

 

Stay in touch

mail@vantonpump.com

(+44) 01260 277040

Vanton Pumps (Europe) Ltd.

Unit 4, Royle Park

Royle Street

Congleton CW12 1JJ

UNITED KINGDOM

www.vantonpump.com