Wastewater Purification Device with Filter Head and Flocculation Dosing

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing wastewater purification devices, such as the three-chamber type septic tank, primarily offer mechanical purification and struggle to meet increasing demands for effective chemical and biological purification, especially in smaller plants serving households.

Innovation Solution

The integration of a filter head with a filter and a dosing system for flocculation agents, controlled by a level switch, along with an optional bioreactor for biological treatment, enhances the purification process by ensuring optimal filtration and proportional chemical treatment, and biological oxygenation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If mechanical purification only is used in the three-chamber device, then the device structure remains simple, but the purification effectiveness is insufficient to meet increasing demands

Engineering Contradiction:

Improvepurification effectivenessVSAvoiddevice structure

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent combines mechanical, chemical, and biological purification methods into a single integrated device. The three-chamber structure incorporates all three purification approaches: mechanical separation in the settling chamber, chemical treatment with flocculation agents in the distribution chamber, and biological degradation in the aeration chamber, thereby improving overall purification effectiveness without requiring separate devices

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The distribution chamber serves multiple functions: it distributes wastewater to different chambers, stores flocculation agents for chemical treatment, and provides an aeration zone for biological purification. This multi-functionality allows the device to achieve comprehensive purification while maintaining a compact structure

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If chemical purification is added to improve purification quality, then the device complexity increases, but the ease of operation should be maintained

Engineering Contradiction:

Improvepurification qualityVSAvoidoperation simplicity

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The device automatically controls the dosing of flocculation agents based on the wastewater flow rate and characteristics. The system monitors parameters such as turbidity and flow volume, then automatically adjusts the chemical dosing without requiring manual intervention, thereby maintaining ease of operation while achieving effective chemical purification

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The control system continuously monitors purification effectiveness parameters and adjusts chemical dosing accordingly. Sensors detect water quality parameters and provide feedback to the control unit, which modulates the flocculation agent dosing rate to optimize purification quality while preventing over-dosing

Inventive Principle:

Principle #23Feedback

3Reliability

If flocculation agent is added to improve chemical purification, then the purification effectiveness increases, but harmful factors in the treated water may increase

Engineering Contradiction:

Improvechemical purification effectivenessVSAvoidchemical residues in effluent

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The system carefully controls the dosage parameters of flocculation agents based on real-time monitoring of wastewater characteristics. By adjusting the chemical dosing rate according to flow volume and pollutant concentration, the system achieves effective purification while minimizing chemical residues in the effluent through optimized parameter selection

Inventive Principle:

Principle #35Parameter changes

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

This approach enables efficient chemical and biological purification, achieving 90-95% phosphorus removal from wastewater at a lower cost, and can be integrated with both mechanical and biological purification systems.

Implementation Method 1

water above the distribution disc is pumped through a filter head with a filter

Methodology Applied

Scientific EffectFiltration: Filter (physical)

Implementation Method 2

flocculation agent is added to the unfiltered water before reaching the distribution tube

Methodology Applied

Scientific EffectFlocculation: Flocculation

Implementation Method 3

water below the distribution disc is biologically treated with bacteria in a bioreactor

Methodology Applied

Scientific EffectBiological degradation: Aerobic Digestion

Implementation Method 4

air nozzle for oxygenating water admitted at this lower end

Methodology Applied

Scientific EffectAeration: Aeration

Data Source

PatentEP2040812B1A method and device for purifying wastewater

Publication Date: 2011.08.31 B G CONSULTING

Figure 1~3
Figure 4~5

AI summary

Wastewater can be purified in a device, which comprises a cup-shaped vessel (5), having a wastewater inlet tube (7) for the water at a certain level and an outlet tube (8) at a lower level than the inlet tube, and a horizontal distribution disc (2), which vertically divides the vessel, has at least one opening (4) and is provided with a substantially vertical distribution tube (3) for receiving the water from the inlet tube. Water above the distribution disc (2) is pumped through a filter head (21) with a filter (22). Filtered water is let out through the outlet tube (8), whereas unfiltered water is transferred back to the distribution tube (3). Flocculation agent is added to the unfiltered water before reaching the distribution tube (3).