Complete Set of Sand Washing and Sewage Treatment Equipment

Given the critical role of wastewater treatment and recycling in the sand washing industry, scientific methods must be applied in practical operations to continuously optimize wastewater management strategies. By prioritizing water environment protection, addressing key challenges across all aspects of wastewater treatment technology, and steadily enhancing system reliability, a sustainable future can be achieved. Below is an overview of LZZG’s complete set of sand washing wastewater treatment equipment.

1. Thickener

LZZG’s concentration tank is engineered on the foundation of traditional vertical flow sedimentation equipment, featuring an optimized internal feed barrel structure that significantly enhances sedimentation efficiency. The tank body has a circular plan view; suspended solids settle into the conical sludge bucket at the bottom under gravity, while clarified water discharges through the overflow weir along the upper rim. To ensure high-quality effluent, the overflow port is equipped with a scum filter and baffle. Underflow concentration can reach up to 70%, delivering a processing capacity 3–8 times higher than conventional thickeners.

This solid-liquid separation equipment operates via gravity sedimentation. During operation, solid particles suspended in the slurry within the thickener’s cone settle under gravity, leaving clarified water in the upper zone for effective separation. Slurry wastewater with a solid content of 2% to 15% can be concentrated to 60%–70% through gravity settling. The upper section allows clear water to overflow, achieving both sewage purification and solid-liquid separation.

Feeding concentration: ≤15%

Processing capacity: 50t/h-200t/h

Applicable materials: sand, quartz sand, river pebble, granite, limestone, basalt, coal gangue, weathered sand, river sand, and many other materials.

Application range: This equipment has been widely used in various industries such as sand quarries, sand and aggregate plants, precious metal concentrators, ceramics, and glass.

Product features: Utilizing suspension filtration, media adsorption, and precipitation principles, this system operates without purification membranes or wearing parts. The tank body is constructed from high-quality carbon steel (or stainless steel, epoxy glass fiber reinforced plastic, etc.), offering excellent strength and corrosion resistance. It features low reagent costs, large processing volume, high efficiency, and stable performance. Its compact size and small footprint ensure convenient and rapid installation. With a service life of 10–15 years, the equipment requires minimal initial investment while delivering significant economic benefits. Processing capacity exceeds that of traditional thickeners, and overflow water quality meets national discharge standards.

2. Automatic Dosing System

Precise, regular, and quantitative addition of catalytic agent solutions is essential for optimal treatment outcomes. The JY series automatic dosing system offers a professional solution for chemical agent injection in sewage treatment processes, fully integrated with associated equipment. It is widely applied in power plants, chemical industries, water treatment facilities, and aggregate processing tailwater applications requiring purification and flocculation. This water treatment agent system ensures continuous and stable dosing for effective water quality management.

Composition Structure: Solution tank, agitator (optional), metering pump, control cabinet, pipelines, buffer, pressure gauge, Y-type filter, liquid level gauge, liquid level sensor (optional), conductivity meter (optional), pH meter (optional), corrosion online monitor (optional), bracket, and other components.

Equipment Function: Dispensing flocculants, disinfectants, acids, and alkali solutions in water treatment; injecting scale inhibitors, water quality stabilizers, etc., into cooling water and circulating water systems; adding acid and alkali solutions to various processes in the chemical industry, printing, and dyeing sectors.

Product features: All components of the dosing device are centrally mounted on a rack, forming a compact and rational independent dosing unit. This design significantly reduces the workload for structural design and on-site installation while minimizing floor space requirements. The system offers fully automatic mixing and automatic chemical addition, saving labor resources. The solution tank is equipped with a plate level gauge, enabling on-site display and providing protection by stopping the pump at low liquid levels. It supports both on-site manual adjustment and automatic dosing. All electrical appliances and instruments are integrated into an electrical cabinet, ensuring a compact structure and safe, convenient commissioning and operation. The system enables continuous chemical supply, optimizing time efficiency and dosage accuracy.

3. Filter Press

The chamber filter press is a sludge treatment device engineered to achieve solid-liquid separation in industrial production processes. It is widely applied across industries such as chemicals, ceramics, petroleum, pharmaceuticals, food processing, and metallurgy, and is also suitable for industrial filtration in sewage sludge treatment. This equipment offers key advantages including convenient operation and maintenance, along with reliable performance. The filter cake produced by the filter press features high solid content and excellent separation efficiency.

Feeding Concentration: 20-40%

Processing Capacity: 0.8t/h-12t/h

Filtering Area: 50㎡-500㎡

Applicable Materials: sand, quartz sand, river pebbles, granite, limestone, basalt, coal gangue, weathered sand, river sand, and many other materials.

This features a simple structure, easy operation, stable performance, and convenient maintenance. With few wearing parts, it ensures low maintenance costs. The filter area can be flexibly selected, occupying minimal space. It offers strong material adaptability, making it suitable for various small and medium-sized sludge dehydration applications. Compared to other types of dehydrators, it produces mud cake with a higher solid content rate, requires less footprint, and facilitates post-processing such as transportation.