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Process for preparing halophyte organic fertilizer using marine culture sludge

A technology of halophyte and marine aquaculture, applied in the fields of sewage/sludge fertilizer, organic fertilizer, biological sludge treatment, etc., can solve the problem of inability to grow, and achieve the effect of multi-profit, strong operability and production promotion.

Inactive Publication Date: 2004-11-17
NANJING AGRICULTURAL UNIVERSITY
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Problems solved by technology

[0006] Technical Problem The present invention provides a method for preparing plant organic fertilizer from seawater aquaculture sludge, which overcomes the problem that seawater culture sludge in the prior art is rich in a large amount of organic matter, nitrogen, phosphorus, potassium and trace elements, but because of its high NaCl content, Directly used as a fertilizer for the defects that plants cannot grow, improve the effectiveness of fertilizer nutrients, and meet the requirements of organic fertilizers for halophytes

Method used

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Embodiment Construction

[0017] 1. Implementation steps

[0018] 1. Air-dry the mariculture sludge and sugar factory pond mud for later use.

[0019] 2. Determination of total nitrogen, alkaline nitrogen, total phosphorus, available phosphorus, Cl in air-dried samples - Concentration, pH value, conductivity and other indicators.

[0020] 3. Rinse and desalt the culture sludge. Control the water-to-soil ratio to 5:1, vibrate at 25°C for 5 minutes, filter with a Buchner funnel, and air-dry the rinsed sludge for later use.

[0021] 4. Collect the filtrate and measure the content of nitrogen and phosphorus. Determination of Cl in air-dried sludge after washing - Concentration, pH value, conductivity.

[0022] 5. Mix the air-dried mariculture sludge and sugar factory pond mud by 2:5 (mass ratio) after rinsing, and control the water content to 50%-60% (mass ratio), and stir and ventilate for 5-15 minutes every day. And ferment according to different treatments (as shown in the table below). Two repli...

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Abstract

A process for preparing plant fertilizer through mariculture comprises the steps of, air-drying mariculture sludge and the pond sludge in cane sugar factories, subjecting the cultivation sludge to eluting desalinization, mixing the eluted sludge with the air-dried pond sludge by the mass ratio of 2:5, controlling humidity between 50%-60% (mass ratio), agitating and ventilating 5-15 minutes each day, fermenting 20 days at 35 deg. C-45 deg. C, air-drying to obtain the halophytic vegetation fertilizer.

Description

1. Technical field [0001] The invention discloses a method for preparing halophyte organic fertilizer from seawater aquaculture sludge, which belongs to the utilization technology of marine organisms and is specially used for preparing halophyte organic fertilizer from seawater aquaculture sludge. 2. Technical Background [0002] The 21st century is the ocean century, which has become the consensus of people of insight all over the world. Facing the sea will prosper, and turning away from the sea will lead to decline, which will be confirmed on a new historical level. At present, the development of the ocean at home and abroad involves many aspects such as fishery, energy, transportation, and tourism. The depletion of fresh water resources has led to more utilization of sea water resources in various aspects. Mariculture is very popular in coastal areas, and the sludge at the bottom of mariculture ponds will produce a large amount of toxic substances and pathogens with the...

Claims

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Application Information

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IPC IPC(8): C02F11/02C05F7/00
CPCY02A40/20
Inventor 刘兆普夏天翔刘玲陈铭达
Owner NANJING AGRICULTURAL UNIVERSITY
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