Deep-well Pump Riser Integrated Water Treatment

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Solution Overview

Problem

Borehole pump systems face issues with water treatment systems freezing in cold weather and foreign substances precipitating and blocking the borehole, leading to operational reliability concerns and increased costs.

Innovation Solution

A borehole pump system with a water treatment system integrated in the riser above the immersion pump, incorporating an aerator and filter to prevent sedimentation and blockages, using a flexible riser design and self-maintaining control device for filter rinsing, ensuring effective water purification and prevention of freezing without additional insulation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a water treatment system is provided in the borehole pump system, then water purification is achieved, but the risk of freezing in cold weather increases

Engineering Contradiction:

Improvewater purificationVSAvoidfreezing risk

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The water treatment system is nested within the riser pipe that is already part of the borehole pump system. The riser serves dual purposes: as the water conveyance pipe and as the housing for the water treatment system, eliminating the need for separate insulation while maintaining the treatment function.

Inventive Principle:

Principle #7Nested doll (Nesting)

Solution Approach 2:

The riser pipe performs multiple functions: it conveys water from the pump to the surface and simultaneously houses the water treatment system. This multi-functionality eliminates the need for additional insulation components while maintaining both water transport and treatment capabilities.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If water is aerated to precipitate iron compounds, then water purification is improved, but the risk of borehole blockage increases

Engineering Contradiction:

Improvewater purificationVSAvoidborehole blockage

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

Instead of allowing precipitated iron compounds to settle at the bottom of the borehole where they cause blockages, the system inverts the gravity-driven settling process by using upward flow through the riser. The aerator is positioned such that precipitated substances are carried upward and discharged at the surface rather than accumulating in the borehole.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The aerator is positioned in advance within the riser pipe before the water reaches the surface, allowing iron compounds to precipitate during the upward flow. This preliminary precipitation action occurs in a controlled environment where the upward flow prevents blockage, rather than allowing precipitation to occur in the borehole where it would cause blockages.

Inventive Principle:

Principle #10Preliminary action

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 system operates reliably and cost-effectively by preventing freezing and blockages, ensuring continuous operation and easy maintenance through integrated water treatment and flexible design, while avoiding sedimentation and allowing for thorough water purification.

Implementation Method 1

The water is aerated in order to precipitate the iron compounds

Methodology Applied

Scientific EffectAeration: Aeration

Implementation Method 2

a water treatment system for cleaning the pumped water is disposed in the riser

Methodology Applied

Scientific EffectFiltration: Filter (physical)

Data Source

PatentUS9038711B2Deep-well pump system

Publication Date: 2015.05.26 GRUNDFOS MANAGEMENT AS

AI summary

A borehole pump system includes an immersion pump (20) and a riser (15) accommodated in the borehole (10). A water treatment system for cleaning pumped water is disposed in the riser.