Slurry Separator Filtration With Filter Cake Level Control
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Solution Overview
Problem
Existing wastewater treatment systems in livestock facilities struggle to effectively remove suspended solids from wastewater to meet local environmental regulations for discharge, leading to potential environmental harm and health risks.
Innovation Solution
A wastewater treatment system comprising a coagulation-flocculation assembly and a slurry separator with a filtration module, utilizing coagulating and flocculating agents to form a slurry that is separated into liquid and sludge, with a level maintaining arrangement to optimize the filtration process and ensure compliance with environmental standards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional wastewater treatment methods are used, then the system structure is simple, but the suspended solids removal efficiency is insufficient to meet environmental regulations
Solution Approach 1:
The treatment system is divided into distinct functional modules: coagulation chamber, flocculation chamber, and filtration chamber. Each chamber performs a specific function in the treatment sequence, allowing the system to achieve high removal efficiency through staged processing while maintaining manageable complexity through modular design
Solution Approach 2:
Coagulation is performed as a preliminary step before filtration to aggregate suspended solids into larger flocs. This preliminary action enhances the subsequent filtration process by pre-concentrating and pre-shaping the solids, thereby improving overall removal efficiency without requiring overly complex filtration systems
2Manufacturing precision
If filtration is performed without maintaining filter cake level, then the operation is simple, but the filtration efficiency and effluent quality deteriorate
Solution Approach 1:
A level sensor continuously monitors the filter cake thickness and provides feedback to the control system. When the filter cake reaches a predetermined optimal thickness, the system automatically initiates backwashing or adjusts operational parameters, maintaining consistent effluent quality without requiring manual intervention
Solution Approach 2:
The system performs automatic backwashing when filter cake buildup reaches critical levels. The accumulated filter cake is utilized during backwashing to flush and clean the filtration medium, enabling the system to maintain its own performance without external service intervention
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 efficiently removes suspended solids, producing a clearer effluent that meets local discharge standards, reducing environmental impact and ensuring safe disposal through municipal sewage systems.
Implementation Method 1
facilitate mixing of the raw wastewater with the coagulating agent therein so as to form coagulated wastewater
Implementation Method 2
facilitate flocculation of the coagulated wastewater so as to form coagulated-flocculated wastewater slurry
Implementation Method 3
a filtration module configured to facilitate percolating of liquid therethrough and forming of a filter cake thereon
Data Source
Figure 1
Figure 2A~2B
Figure 3A~3B
AI summary
A system for treating wastewater comprising a coagulation-flocculation assembly having a raw wastewater inlet and a coagulated-flocculated wastewater outlet; and a slurry separator comprising an intake area configured for receiving wastewater slurry from the coagulated-flocculated wastewater outlet, a liquid outlet, a sludge outlet, and a filtration module configured to facilitate percolating of liquid therethrough and forming of a filter cake thereon. The slurry separator being configured to receive slurry at the intake area, separate the slurry to liquid and sludge by the filtration module, remove the liquid via the liquid outlet, and convey the sludge from the intake area to the sludge outlet. The system further comprises a level maintaining arrangement configured to maintain at least a minimal level of the filter cake.