Trickling Filter Aeration Tank Wastewater Cooling

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Solution Overview

Problem

Conventional wastewater treatment systems face issues with high temperatures and low dissolved oxygen levels, which negatively impact bacteria performance, particularly in biochemical processes, leading to reduced treatment efficiency and sludge accumulation.

Innovation Solution

A wastewater treatment system incorporating a trickling filter with bacteria culture modules and a blower device to cool wastewater and increase oxygen levels, featuring an aeration tank for circulation and ventilation, utilizing inclined bottom walls and red wood culture woods to prevent sludge accumulation and enhance bacterial environment.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of manufacture

If conventional biochemical process is used in wastewater treatment, then treatment can be performed without chemical solutions, but high temperature and low dissolved oxygen are generated which reduce treatment efficiency

Engineering Contradiction:

Improvechemical-free treatment processVSAvoidtreatment efficiency

Core Design Contradiction:

Ease of manufactureVSProductivity

Solution Approach 1:

The treatment system is divided into separate functional modules: trickling filter for biochemical treatment and aeration tank for oxygen supply and temperature control. This segmentation allows each module to optimize its function while working together to resolve the contradiction between chemical-free treatment and treatment efficiency.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Aeration tank serves as an intermediary component that introduces oxygen and cools wastewater before it enters the trickling filter. This mediator resolves the contradiction by creating optimal conditions (higher oxygen, lower temperature) for bacterial activity without requiring chemical additives.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Device complexity

If oxygen supply unit is placed above the biologically fluidized tank to flow wastewater through it, then simple oxygen supply is achieved, but the wastewater temperature remains high and dissolved oxygen remains low which is bad for bacteria

Engineering Contradiction:

Improveoxygen supply arrangementVSAvoidbacterial activity condition

Core Design Contradiction:

Device complexityVSReliability

Solution Approach 1:

Instead of placing the oxygen supply above the treatment tank, the invention inverts the arrangement by placing the aeration tank below the trickling filter. Wastewater flows from the trickling filter into the aeration tank where it receives oxygen and cooling, then recirculates back. This inverted arrangement successfully lowers temperature and increases dissolved oxygen to levels suitable for bacterial activity.

Inventive Principle:

Principle #13The other way round (Inversion)

3Duration of action of moving object

If wastewater temperature increases during treatment, then treatment process continues, but high temperature creates bad environment for bacteria

Engineering Contradiction:

Improvetreatment process continuityVSAvoidwastewater temperature

Core Design Contradiction:

Duration of action of moving objectVSTemperature

Solution Approach 1:

The aeration tank enables continuous oxygen supply and cooling throughout the treatment process. By recirculating wastewater through the aeration tank multiple times, the system maintains continuously low temperature and high oxygen levels, creating a stable environment for bacteria to thrive throughout the entire treatment duration.

Inventive Principle:

Principle #20Continuity of useful 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 effectively reduces wastewater temperature and increases dissolved oxygen, creating a favorable environment for aerobic bacteria, thereby improving treatment efficiency and reducing sludge accumulation and odor.

Implementation Method 1

a blower device provided on the first sidewall of the trickling filter, wherein the blower device has an output terminal which is below the bottom wall of the trickling filter; an air pipe provided on the second sidewall of the trickling filter, wherein the air pipe has an inlet communicated with a room under the bottom wall

Methodology Applied

Scientific EffectAeration: Aeration

Implementation Method 2

aeration tank under the trickling filter... effectively reduces wastewater temperature

Methodology Applied

Scientific EffectEvaporative cooling: Evaporative Cooler

Data Source

PatentUS10954146B2Combination of trickling filter and aeration tank of wastewater treatment system

Publication Date: 2021.03.23 KUAN YUAN PAPER MFG CO LTD

AI summary

A wastewater treatment system includes an aeration tank under a plurality of trickling filters to receive wastewater from the trickling filters. A plurality of bacteria culture modules are received in each trickling filters. A plurality of blower devices and air pipes are provided to generate ventilation to cool the wastewater flowing out of the bacteria culture modules. Each of the bacteria culture modules has a cage in which a plurality of culture woods are vertically received. Therefore, a temperature of the wastewater is reduced to form an environment which is good to the bacteria.