Tanker White Water Recovery System

Turning milk-containing flushing water into a controlled recovery stream Introduction

After a milk tanker is unloaded, residual milk remains as a film on the tanker interior, outlet, valves, hoses and product-contact surfaces. In conventional cleaning, the initial water flush carries this milk to drain or effluent treatment. This milk + water stream is commonly called white water. With larger tanker capacities and higher reception volumes, the cumulative milk loss can become significant. Milk tanker cleaning is therefore a practical place to look for recoverable milk loss in dairy plants.

Goose proposes a Tanker White Water Recovery System that captures the milk-rich initial flushing stream, monitors the return using turbidity and automatically changes over to the normal CIP/drain route once the stream becomes sufficiently clear. The recovered white water can then be routed for controlled reuse in approved applications such as curd or buttermilk production, subject to formulation and food-safety/HACCP validation. This white water recovery system is built for milk reception bays that want to cut milk loss and ETP load without changing how tankers are unloaded.

Goose Recovery Process

1.       Complete tanker unloading through the normal milk reception system.

2.       Mount a dedicated Goose sanitary flushing attachment with a suitable spray ball/nozzle arrangement.

3.       Introduce a controlled quantity of water through an automatic valve and flowmeter.

4.       Route the milk-rich first flush to the dedicated White Water Recovery Tank.

5.       Continuously measure return turbidity.

6.       Keep the return directed to recovery while turbidity is above the agreed recovery threshold.

7.       Automatically divert the return to normal CIP/drain once the return reaches the validated clean-water condition.

Process Sketch

White Water Recovery Tank

The recovery tank should be a dedicated sanitary SS304 tank sized from measured tanker residual volume and tanker traffic. Typical provisions include:

Component	Function
SS304 sanitary tank	Collect recovered white water
Level transmitter	Continuous level monitoring
High-level switch	Overflow protection
Low-level switch	Pump protection
Agitator where required	Maintain uniformity
Temperature monitoring	Condition monitoring
Sanitary transfer pump	Controlled reuse transfer
CIP spray device	Tank cleaning
Sampling point	Quality verification

Why Turbidity-Based Recovery?

Residual milk varies with tanker size, internal geometry, unloading efficiency, milk film thickness and operating conditions. A fixed-time recovery sequence can therefore recover too little or dilute the recovery tank unnecessarily. Turbidity-based control makes the recovery endpoint depend on the actual return condition. This turbidity-based control is the core of a reliable white water recovery system.

Potential Reuse

•         Curd production: controlled addition where permitted by the approved formulation.

•         Buttermilk production: controlled addition where permitted by the recipe and quality system.

•         Other approved dairy formulations after microbiological, formulation and HACCP validation.

Recovered white water should not automatically be returned to the main milk stream. Final reuse must be approved by the dairy's food-safety and quality team.

Illustrative Recovery Potential

The following are illustrative engineering ranges only. Actual recovery must be established by site trials.

Tanker capacity	White water*	Milk equivalent*	At 10 tankers/day*
10 KL	150–250 L	5–15 L	550–1,650 L/year
20 KL	250–400 L	10–25 L	1,100–2,750 L/year
30 KL	350–550 L	15–35 L	1,650–3,850 L/year
40 KL	450–700 L	20–45 L	2,200–4,950 L/year

*Illustrative values only; actual recovery depends on tanker design, unloading efficiency, residual milk and validated turbidity endpoint.

Conventional Cleaning vs Goose Recovery

Parameter	Conventional	Goose recovery
Milk-rich first flush	Normally lost to drain/ETP	Captured in recovery tank
Water quantity	Sequence/time based	Flowmeter controlled
Recovery endpoint	Fixed process sequence	Turbidity based
Valve switching	Operator/process sequence	Automatic
Reuse	Normally unavailable	Controlled reuse possible
Data	Limited	Flow, turbidity, level and alarms

Automation & Traceability

The Goose PLC can record tanker identification, recovery start, water quantity, recovered quantity, turbidity trend, recovery endpoint, recovery tank level, valve status, pump status and alarms. This converts white water recovery from an operator-dependent activity into a measurable and repeatable process. These records can support the plant's HACCP and quality reviews.

Key Benefits

•         Reduced milk losses during tanker cleaning.

•         Reduced organic load sent to ETP from this stream.

•         Controlled water consumption through flowmeter-based flushing.

•         Automatic recovery endpoint based on turbidity.

•         Measurable recovery quantity and process performance.

•         Potential controlled reuse in curd and buttermilk production.

•         Scalable for high-capacity tanker reception facilities.

Together, these benefits make white water recovery a measurable way to reduce milk loss in dairy plants.

Goose Solution

The Goose Tanker White Water Recovery System combines a sanitary tanker flushing attachment, spray ball/nozzle arrangement, automatic water valve, flowmeter, turbidity measurement, automatic valve switching and a dedicated recovery tank.

Recovery quantity and reuse application should be validated through plant trials and the dairy's food-safety/HACCP approval process before routine production use. Planning a white water recovery system for milk tanker cleaning at your milk reception? Talk to Goose Solutions, or read how we automated a dairy plant and upgraded its CIP system.

Disclaimer

This document describes an illustrative engineering concept for tanker white-water recovery. Actual recovery volumes, water usage and process performance depend on tanker design, residual milk, unloading practice and site conditions, and must be established by plant trials. Any reuse of recovered white water in product is subject to the dairy’s food-safety, formulation and HACCP approval. This is not a performance guarantee or a food-safety validation.