Low-Temperature Ware Wash Detergent for Hard Water Scale Control
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Solution Overview
Problem
Conventional ware wash detergents, especially those used in institutional and commercial settings with hard water, face challenges with scale build-up due to high alkalinity and elevated temperatures, leading to aesthetic issues and energy inefficiencies, and there is a need for phosphorus-free alternatives that effectively reduce scale formation without using phosphates or NTA, which are environmentally and safety concerns.
Innovation Solution
A phosphorus-free detergent composition comprising aminocarboxylates, water conditioning polymers, and alkalinity sources, used at low temperatures (120°F to 140°F), which reduces or eliminates scale build-up on treated surfaces without surfactants, chelants, or sequestrants, employing aminocarboxylates like methylglycinediacetic acid and water conditioning polymers like polycarboxylates to inhibit scale formation synergistically.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional alkaline detergents are used with hard water, then cleaning effectiveness is improved, but scale build-up increases
Solution Approach 1:
The patent removes phosphates and NTA from the detergent formulation, extracting the harmful components that cause scale build-up while retaining effective cleaning through alternative mechanisms (alkalinity from sodium hydroxide/carbonates, surfactants, and enzymes)
Solution Approach 2:
The patent changes the chemical composition parameters by eliminating phosphorus-containing compounds and replacing them with phosphate-free alternatives, fundamentally altering how the detergent interacts with hard water minerals to prevent scale formation
2Reliability
If phosphates are used as hardness sequestrants, then scale control is improved, but environmental safety deteriorates
Solution Approach 1:
The patent extracts phosphates from the formulation entirely, eliminating the environmental harm associated with phosphate discharge into waterways while maintaining scale control through alternative ingredients and mechanisms
Solution Approach 2:
The patent replaces long-term persistent phosphates with biodegradable alternatives that provide temporary scale control during the wash cycle but break down harmlessly, effectively using short-acting substitutes for persistent harmful substances
3Reliability
If NTA-containing aminocarboxylates are used as binding agents, then scale prevention is improved, but safety deteriorates due to carcinogenic concerns
Solution Approach 1:
The patent removes NTA and other carcinogenic aminocarboxylates from the formulation, eliminating the safety hazard while maintaining scale prevention through safe alternative ingredients and mechanisms
4Reliability
If elevated temperatures are used for ware washing, then cleaning performance is improved, but energy consumption increases
Solution Approach 1:
The patent modifies the chemical composition to enable effective cleaning at lower temperatures by incorporating temperature-efficient surfactants, enzymes, and builders that maintain cleaning performance without requiring high thermal energy input
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composition effectively prevents scale formation on treated surfaces at low temperatures, providing an improved safety profile and energy savings by reducing hard water scale, even in hard water sources, without the need for separate detergency agents like surfactants or enzymes.
Implementation Method 1
phosphorus-free detergent compositions which replace phosphate and/or other phosphorus containing detergent materials... employ aminocarboxylates like methylglycinediacetic acid and water conditioning polymers like polycarboxylates to inhibit scale formation synergistically
Implementation Method 2
water conditioning polymers like polycarboxylates to inhibit scale formation synergistically
Data Source
AI summary
Phosphorus-free detergent compositions are provided. Detergent compositions including an aminocarboxylate, water conditioning agent, source of alkalinity and water beneficially do not require the use of additional surfactants and/or polymers to provide suitable detergency and prevent scale build-up on treated surfaces. The detergent compositions are used with a sanitizer to employ the phosphorus-free detergent compositions for use as low temperature ware wash detergents that beneficially reduce scale build-up. Methods of employing the phosphorus-free detergent compositions are also provided.