Aquaculture Breeding Effluent

Technical Background

The 2024 No.1 Central Document, "Opinions of the CPC Central Committee and the State Council on Studying and Utilizing the Experience in the Green Rural Revival Program and Vigorously and Effectively Promoting Comprehensive Rural Revitalization", actively promotes the prevention and control of aquaculture effluent pollution. In recent years, local governments have successively issued control indicators and emission limits for aquaculture effluent, particularly setting strict limits for total nitrogen and total phosphorus. Traditional "three ponds and two dams" technology requires large land areas and struggles to meet discharge standards, failing to comply with the relevant standards. CIMC Environmental has independently developed an integrated aquaculture effluent treatment system to address challenges such as large fluctuations in water volume, strict discharge requirements for total nitrogen and total phosphorus, and high operating costs.

Technical Introduction

This equipment employs a high-efficiency fixed biological bed combined with advanced nitrogen removal technology, developing an integrated aquaculture effluent treatment system. It effectively addresses challenges such as large water fluctuation, unstable total nitrogen and phosphorus discharge, high operating costs, and large footprint.

Technical Advantages

Low sludge production

The filler has a high specific surface area and is densely packed, allowing for a large amount of microbial attachment, resulting in reduced sludge production.
Small footprint

The treatment system occupies only 0.5% to 1% of the total service area, significantly smaller than traditional treatment processes (which occupy about 5-15%), freeing up more than 90% of the farming area.
Stable and compliant effluent

The system uses a combination of biological and chemical treatment technologies, ensuring high treatment efficiency and stable, compliant discharge.
Short construction period

The modular design allows for factory prefabrication and on-site assembly, enabling rapid deployment.

Applications

Freshwater aquaculture
Marine aquaculture
Industrial high-density aquaculture
Pond aquaculture

Project Cases

Upgrade and effluent treatment project for pond aquaculture

The treatment site is divided into three locations:
Treatment site 1#: Area of 7800㎡, service area of 1.6 million ㎡
Treatment site 2#: Area of 4667㎡, service area of 1.01 million ㎡
Treatment site 3#: Area of 6670㎡, service area of 0.93 million ㎡

Discharge standard: First-class discharge limits for freshwater aquaculture as per Guangdong Province's "Water discharge standard for aquaculture" (DB44/2462-2024), including TN ≤ 3.0 mg/L, TP ≤ 0.4 mg/L

19133 ㎡

of site area
3.6 million ㎡

of service area

Aquaculture effluent treatment project

The treatment site is divided into three locations:
Treatment site 1#: Area of 8667 ㎡, service area of 1.67 million ㎡
Treatment site 2#: Area of 4333 ㎡, service area of 0.94 million ㎡
Treatment site 3#: Area of 5000 ㎡, service area of 0.76 million ㎡

18667 ㎡

of site area
3.37 million ㎡

of service area

Aquaculture effluent treatment demonstration project

Project Advantages:
① Small footprint: The treatment system occupies only 0.6% of the service area.
② Good aesthetic landscape.
③ Smart Cloud Platform: The project provides a clear and intuitive interface for monitoring water quality, water volume, and other system parameters.

4000 ㎡

of site area
0.67 million ㎡

of service area

Aquaculture effluent treatment project for shrimp hatchery

Equipment size: Length x Width x Height = 6m x 2.5m x 2.9m

8667 ㎡

of service area
50t/d

water treatment capacity