The design of water treatment system in quartz sand production is crucial
because it not only affects production efficiency and product quality, but also
involves environmental protection and resource utilization. The following are
the detailed design steps and key considerations for the water treatment
system:
1. Requirements analysis
Production demand
-Water consumption: Determine the amount of water required during the
production process, including sand washing, cooling, transportation, and other
processes.
-Water quality requirements: Understand the requirements of different process
steps for water quality, such as pH value, hardness, suspended solids content,
etc.
Environmental requirements
-Emission standards: comply with local environmental regulations, understand
the standards and requirements for sewage discharge.
-Reuse rate: Try to increase the water reuse rate as much as possible, reduce
the consumption of fresh water and the discharge of sewage.
2. System composition
Raw water pretreatment
-Grille and sedimentation tank: Remove large solid particles and gravel to
prevent them from entering the subsequent treatment system.
-Coagulation and sedimentation tank: Add coagulants to condense suspended
solids into larger particles, and then precipitate and separate them.
Filtering and sand removal
-Multi media filter: removes suspended solids and fine particles from water
through filter layers of different media.
-Sand filter: specifically designed to remove fine sand particles from water,
ensuring clean water quality.
Fine processing
-Activated carbon filter: removes organic matter, odors, and colors from
water, improving its cleanliness.
-Ultrafiltration or microfiltration: Further remove fine suspended solids and
colloidal particles from water, ensuring that water quality meets high
standards.
Water quality regulation
-PH adjustment: Adjust the pH value of water by adding acid or alkali to meet
the process requirements.
-Hardness adjustment: Add softeners to reduce the hardness of water and
prevent equipment scaling.
Water reuse and circulation
-Circulating water tank: stores treated water for reuse, reducing the
consumption of fresh water.
-Reuse pump: sends the treated water back to various stages of the production
line to achieve water recycling.
sewage disposal
-Biochemical treatment: Through aerobic or anaerobic treatment, the organic
matter in wastewater is decomposed to reduce the concentration of
pollutants.
-Sludge treatment: Dehydration, drying, or incineration of sludge generated
from biochemical treatment to reduce sludge volume and secondary pollution.
Emission treatment
-Neutralization tank: Neutralize the treated wastewater to ensure that the
discharged water quality meets environmental standards.
-Effluent monitoring: Monitor water quality before discharge to ensure
compliance with discharge standards.
3. System design and implementation
Design principles
-Reasonable process: Select a reasonable combination of water treatment
processes based on production process requirements and water quality
requirements.
-Efficient and energy-saving: Choose efficient and energy-saving water
treatment equipment to reduce operating costs.
-Environmental compliance: The designed system must meet the requirements of
environmental regulations to ensure that sewage is discharged in compliance with
standards.
System layout
-Space utilization: Reasonably layout each processing unit, fully utilize the
production site space, and ensure the continuity and stability of system
operation.
-Equipment selection: Select appropriate equipment models and specifications
based on processing capacity and water quality requirements to ensure treatment
effectiveness.
Automation and Control
-Automation control: Introducing an automation control system to achieve
automated operation and monitoring of the water treatment process, reducing
manual intervention, and improving operational efficiency.
-Real time monitoring: Install water quality monitoring instruments to
monitor the water quality of each treatment unit in real time, ensuring water
treatment efficiency and effluent quality.
4. Operation and Maintenance
Regular inspections
-Equipment maintenance: Regularly inspect and maintain water treatment
equipment to ensure its normal operation and extend its service life.
-Water quality monitoring: Regularly monitor the water quality at each stage,
adjust treatment parameters in a timely manner, and ensure the effectiveness of
water treatment.
Emergency plan
-Fault handling: Develop emergency plans, handle sudden faults, and ensure
the continuous operation of the system.
-Environmental emergency: an emergency plan for responding to environmental
accidents and preventing water pollution accidents.
5. Continuous improvement
Technological upgrades
-New technology application: Introduce new technologies and processes,
continuously optimize water treatment systems, and improve treatment efficiency
and effectiveness.
-Energy saving and consumption reduction: adopting energy-saving equipment
and technology to reduce energy and water consumption and achieve green
production.
Environmental optimization
-Recycling: Improve water recycling efficiency, reduce sewage discharge, and
achieve a win-win situation for production and environmental protection.
-Wastewater regeneration: Developing wastewater regeneration and utilization
technologies to use treated wastewater for production or other purposes,
reducing resource waste.
conclusion
The design of water treatment system in quartz sand production needs to
comprehensively consider production needs, environmental requirements, and
economy. Through reasonable system design and scientific management, production
efficiency can be effectively improved, product quality can be ensured,
environmental requirements can be met, and sustainable development can be
achieved.