The application effect of Roots blower in fish ponds is significant, especially in high-density aquaculture, deepwater fish ponds, and industrial circulating water scenarios. The following is an analysis of its core effects and practical applications:
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**1、 The core effect of Roots blower in fish pond aquaculture**
**1. Enhance oxygenation and increase dissolved oxygen levels**
-* * Rapid increase in dissolved oxygen * *: By releasing tiny bubbles (0.1-2mm) through microporous aeration tubes (nanotubes, aeration discs), the oxygen dissolution rate is greatly increased, resulting in a rapid increase in dissolved oxygen (DO) * * in the water to 5-8 mg/L * * (only 2-3 mg/L in natural state).
-Compared to traditional oxygenation methods:
|* * Oxygenation method * * | Oxygenation efficiency (kgO/kW · h) | Applicable water depth | Applicable aquaculture density|
|-------------------|----------------------|---------|------------|
|Roots blower+nanotubes * * | 1.5~2.5 | 2~6 meters | High density|
|Wheeled aerator | 0.8~1.2 | 1-3 meters | Medium to low density|
|Waterwheel aerator | 0.5~1.0 | 1-2 meters | Low density|
**Advantage * *: Suitable for high oxygen consuming species such as shrimp, sea bass, and mandarin fish * *, reducing floating head and hypoxia induced mortality.
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**2. Improve water environment and reduce diseases**
-Breaking the stratification of water bodies: By promoting airflow, the upper and lower layers of water exchange, avoiding the problems of oxygen deficiency in the bottom layer and high temperature in the surface layer.
-* * Release of harmful gases * *: Promote the discharge of toxic gases such as ammonia nitrogen (NH) and hydrogen sulfide (HS), and reduce the risk of fish and shrimp poisoning.
-Promote microbial decomposition: A high dissolved oxygen environment accelerates the decomposition of organic waste (residues, feces), reduces bottom sludge accumulation, and lowers the incidence of diseases.
**Experimental data * *: For the fishponds aerated by Roots blower, * * ammonia nitrogen decreased by 40~60 * *, and the incidence rate of fish decreased by more than 30.
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**3. Energy saving and energy-saving, suitable for long-term operation**
-Low energy consumption: Roots blowers have high efficiency under low pressure (0.1~0.5 bar) conditions, saving 20-30% electricity compared to traditional aerators.
-24-hour stable operation: The water-cooled Roots blower can work continuously and is suitable for industrial recirculating aquaculture (RAS).
-* * Variable frequency control optimizes energy consumption * *: Equipped with a dissolved oxygen sensor, the air volume is automatically adjusted to avoid excessive oxygen supply and waste of electricity.
**Economic comparison * * (taking a 10 acre fish pond as an example):
|* * Oxygenation method * * | Annual electricity consumption (kWh) | Electricity fee (0.6 yuan/kWh)|
|-------------------|----------------|------------------|
|Roots blower (variable frequency) | 8000~10000 | 4800~6000 yuan|
|Impeller aerator | 12000~15000 | 7200~9000 yuan|
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**2、 Comparison of effects under different breeding modes**
**1. Soil pond aquaculture (grass carp, crucian carp, etc.)**
-Applicable models: air volume of 30-50 m3/h, pressure of 0.2-0.3 bar.
-* * Effect * *:
-Reduce the phenomenon of fish floating at night.
-The yield per mu has increased by 20-30.
**2. High density shrimp farming (South American white shrimp, Macrobrachium rosenbergii)**
-* * Applicable models * *: High pressure type (0.4~0.6 bar)+nano aeration tube.
-* * Effect * *:
-Shrimp growth rate increased by 15-20 (sufficient dissolved oxygen, active feeding).
-The breeding density can be increased to 100000 to 150000 livestock per mu (traditional methods only have 50000 to 80000 livestock).
**3. Industrialized circulating water (sea bass, grouper)**
-* * Applicable model * *: Water cooled variable frequency Roots blower, with air volume calculated based on 1-2 cycles per hour.
-* * Effect * *:
-Dissolved oxygen is stable above 6 mg/L, and fish grow evenly.
-The water quality is controllable, and the water change rate is reduced by 50%.
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**3、 Practical application cases**
**Case 1: Jiangsu Yancheng Shrimp Farm**
-* * Problem * *: Traditional aerators cannot meet the demand for high-density shrimp farming, with dissolved oxygen levels often below 3 mg/L at night and high mortality rates for shrimp fry.
-* * Solution * *: Use * * Roots blower (7.5kW)+nano aeration tube * * to cover 5 acres of shrimp pond.
-* * Effect * *:
-The dissolved oxygen remained stable at 5.5-7 mg/L, and the survival rate of shrimp seedlings increased from 60 to 90.
-Shorten the breeding cycle by 10 days and increase the yield by 500 kilograms per mu.
**Case 2: Guangdong Sea Bass Circular Aquaculture**
-Problem: Excessive ammonia nitrogen in water (>1.5 mg/L) and slow growth of fish.
-* * Solution * *: Install * * water-cooled Roots blower+biological filter * *, 24-hour oxygenation+water flow circulation.
-* * Effect * *:
-When ammonia nitrogen drops below 0.3 mg/L, the food intake of sea bass increases by 20%.
-Annual production increased by 35%, resulting in a 25% reduction in electricity costs.
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**4、 How to choose a suitable Roots blower**
**1. Selection reference table**
|* * Fish pond scale * * | Recommended air volume (m3/h) | Pressure (bar) | Power (kW)|
|---------------|----------------|-----------|----------|
|1-3 acres | 10-20 | 0.1~0.2 | 1.5~3|
|* * 5-10 acres * * | 30~50 | 0.2~0.3 | 5.5~7.5|
|* * 10-20 acres * * | 60~100 | 0.3~0.5 | 11~15|
**2. Installation suggestions**
-Aeration pipe layout: evenly distributed at the bottom of the pool, with a spacing of 1.5-2 meters.
-* * Fan position * *: Above the water surface to prevent rainwater backflow.
-* * Maintenance points * *:
-Clean the aeration pipe monthly (to prevent blockage).
-Regularly check the lubricating oil (replace every 3 months).
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**5、 Summary**
**The core advantages of Roots blower in fish pond aquaculture are:
1. * * Oxygenation * * - Increases dissolved oxygen and reduces floating head death.
2. * * Improve water quality * * - reduce ammonia nitrogen and hydrogen sulfide, and minimize diseases.
3. * * Energy saving * * - More economical than traditional aerators.
4. * * Increase yield * * - Suitable for high-density farming, increasing yield by 20-40% per mu.
**Applicable scenarios * *:
-High density shrimp and fish farming (such as shrimp, sea bass, and mandarin fish).
-Deep water fish pond (water depth 2-6 meters).
-Factory based Circular Aquaculture (RAS).
If you need a specific selection plan, you can provide the fish pond area, water depth, and breeding species. I can recommend suitable fan models and aeration system configurations for you!
