CN103798164A - Indoor circulating water prawn high density breeding process - Google Patents

Abstract

The invention provides an indoor circulating water prawn high density breeding process. A breeding pool, a self-rotating type micro-filter, an air sifter type egg white separator, a forward and backward biological processor, a bag type collector, an ash setting pond, a bait fishpond or a tilapia breeding pond, a setting pond and an ecological water return pond are included. The self-rotating type micro-filter is connected with the breeding pond through a water lifting pump. The bag type collector is used for collecting solid waste of the self-rotating type micro-filter. Clean water obtained through processing of the self-rotating type micro-filter flows to the air sifter type egg white separator and then flows to the forward and backward biological processor. The forward and backward biological processor is connected with the setting pond. The self-rotating type micro-filter is connected with the setting pond. The setting pond is connected with the ecological water return pond. Both the bag type collector and the ash setting pond are connected with the bait fishpond or the tilapia breeding pond. According to the indoor circulating water prawn high density breeding process, no water source waste or residue waste exists so that maximum utilization can be achieved, environment pollution is reduced, and the energy consumption is lowered.

Description

A high-density cultivation process of prawns in indoor circulating water

technical field

The invention relates to a high-density cultivation process of prawns in indoor circulating water.

Background technique

As the success rate of prawn farming in outer ponds is getting lower and lower, many farmers are gradually pursuing the indoor facility prawn farming model. Due to the high price of shrimp, many farmers have also begun to pay attention to and increase investment in facilities. However, most of the huge aquaculture water treatment and the combination of water treatment and aquaculture technology are in a state of ignorance. At present, the indoor aquaculture process is mostly similar to the following process. 1. Build a steel structure workshop or shed, and use transparent tiles or transparent films for the roof. 2. Build aquaculture cement pools, either square or strip-shaped. The strip-shaped cement pools are separated in the middle, and the two sides push the water flow in positive and negative directions to form a runway. 3. The breeding pond is equipped with water inlet and drainage facilities. 4. Build a water treatment cement pool, and put in heavy fillers such as quartz sand, ceramsite, volcanic rock, etc. for mechanical biological filtration. 5. Ultraviolet disinfection is used. 6. Use fan or liquid oxygen to supply oxygen to the breeding pond.

Its circulating water treatment process is: culture pond→air flotation pond→mechanical biological treatment pond→ultraviolet disinfection→cultivation pond.

The breeding method is to use algae cultivation to stabilize the PH value of the water body, put in the bacillus antagonistic microbial population, supplement VC, and increase the nutrition of the water body with multi-dimensional and polysaccharides. Use mixed water to maintain water stability and keep prawns growing. It has the following disadvantages and problems:

1. The investment cost is too high, which is not suitable for the promotion of the industry. Its breeding ponds and water treatment facilities all use cement ponds. As we know, the ponds with reinforced concrete structures are quite expensive, and their construction costs reach 800 yuan/square water body. If you try to save a little bit and use brick walls to build a pond, the cost will be 500 yuan per square water body, but the facility is prone to water leakage during use, and once the crack leaks, it will be quite troublesome to maintain. For enterprises, if the investment in fixed assets is too large, the return cycle of input and output will be too long, and the threshold is high, which is not suitable for large-scale promotion. What's more, whether the asset is profitable after investment still depends on the grasp and support of other technologies.

2. The water treatment technology is not perfect, and it cannot meet the water treatment requirements when the organic load is high in the middle and late stages of breeding. On the surface, the process has solid-liquid separation, biological treatment, and ultraviolet disinfection, but the solid-liquid separation device used in practice It is difficult to achieve high efficiency of separation at all, so the load in the biological treatment link is too high and it is easy to block. The facility-type heavy packing biological treatment process is inconvenient to backwash during regeneration or the cleaning energy consumption is high. Ultraviolet disinfection seems to have no side effects, but its efficiency is low and energy consumption is high, making it inconvenient to quantify and use.

3. The water treatment process shows that not only the water head loss is large, but also the waste water is discharged without treatment, resulting in waste and environmental pollution. Wastewater from solid-liquid separation and backwashing water from biological treatment facilities consume a lot, which is not a small waste for enterprises that transport seawater for aquaculture. This water discharge also brings pollution and even soil salinization degeneration.

4. The aquaculture water in this water treatment process is difficult to be used repeatedly to raise shrimps after raising a batch of shrimps. This process only removes the residual bait and feces in the breeding process and is not complete. At the same time, the biological treatment facility removes part of the ammonia nitrogen and nitrite, but the phosphate and nitrate accumulated in the water body have not been reasonably removed. Of course, the phosphate Nitrate and nitrate will not be directly toxic to shrimp, but this substance will continue to accumulate in the water body, and to a certain extent, it will definitely be detrimental to the survival and growth of shrimp.

5. The antagonistic microbial effect of Bacillus in the breeding process is not so strong for the balance of harmful microorganisms. There are too many suspended solids in the muddy water environment. Although it helps to prevent the stress of shrimp, its oxygen consumption is huge and excessively increased. Energy consumption and affect the oxygen demand of shrimp. At the same time, it is impossible to realize ultra-high-density farming of shrimp in a turbid environment. Microorganisms grow vigorously in an environment with high organic matter content, and at the same time, harmful microorganisms also increase sharply. Shrimp needs to be consumed during growth. More energy is used to resist the influence of adverse environment, so its growth rate is quite slow when the density is high.

Contents of the invention

The purpose of the present invention is to overcome the defects of the prior art, and provides a high-density cultivation process of prawns in indoor circulating water, which has the characteristics of low cost and environmental protection.

The present invention is achieved in the following way: a high-density culture process for prawns in indoor circulating water, which includes a culture pond, a spin microfilter, an air sieve protein separator, a positive and negative biological processor, a bag collector, and a sediment tank , bait fish ponds or tilapia culture ponds, sedimentation tanks, ecological return ponds, the spin microfilter is connected to the culture ponds through the pump, and the bag collector is used to collect the solid waste of the spin microfilter. The clean water treated by the filter flows to the air screen protein separator, and then flows to the forward and reverse biological processor, the forward and reverse biological processor is connected to the sedimentation tank, the spin microfiltration machine is connected to the sedimentation tank, and the sedimentation tank is connected to the ecological return tank. Both bag collectors and sediment tanks are connected to bait fish ponds or tilapia culture ponds.

Further, the ecological return pond is connected to the breeding pond.

Further, the forward and reverse biological processors are connected to the culture ponds.

Further, the forward and reverse biological processor has a water inlet and a water outlet, and the water inlet and water outlet can operate bidirectionally.

Further, large algae and microalgae are cultivated in the ecological backwater pool.

Further, the sedimentation tank is provided with three-stage sedimentation tanks, wherein sea cucumbers are placed in the first and second-stage sedimentation tanks.

Further, the breeding pond and the ecological backwater pond are made of food-grade plastic plates.

The present invention provides a high-density breeding process for prawns in indoor circulating water. Tilapia culture ponds, sedimentation ponds, and ecological return ponds, the spin microfiltration machine is connected to the culture ponds through the water pump, and the bag collector is used to collect the solid waste of the spin microfiltration machine. After the spin microfiltration machine treats The clean water flows to the air screen protein separator, and then flows to the forward and reverse biological processor, the forward and reverse biological processor is connected to the sedimentation tank, the spin microfiltration machine is connected to the sedimentation tank, the sedimentation tank is connected to the ecological return tank, and the bag collector Both the tank and the sediment tank are connected to a bait fish tank or a tilapia culture tank. When in use, use the extraction pump to lift water to the spin-type microfiltration machine, and the clean water after microfiltration enters the air-sieve protein separator, and then passes through the positive and negative biological processors and enters the breeding pond. The solid waste generated during the treatment process is It is deposited in the sedimentation tank, and then enters the bait fish pond or tilapia breeding pond for repeated use, and can also be treated in the ecological backwater pond, which is convenient for the normal operation of the entire system process, no waste of water source, no waste of residue, in order to achieve the maximum Utilization reduces environmental pollution and energy consumption.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present invention. For those skilled in the art, other drawings can also be obtained according to these drawings without any creative effort.

Fig. 1 is a flowchart provided by an embodiment of the present invention.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

As shown in Fig. 1 , the embodiment of the present invention provides a kind of indoor circulating water prawn high-density culturing process, which includes a culture pond, a spin microfilter, an air sieve protein separator, a positive and negative biological processor, a bag collector, Sediment ponds, bait fish ponds or tilapia culture ponds, sedimentation ponds, and ecological backwater ponds, the spin microfilter is connected to the culture ponds through a water pump, and the bag collector is used to collect the solid waste of the spin microfilter. The clean water treated by the rotary microfiltration machine flows to the air screen protein separator, and then flows to the forward and reverse biological processor. Basins, bag traps and sediment tanks are all connected to bait fish ponds or tilapia culture ponds.

Further, the ecological return pond is connected to the culture pond, and the forward and reverse biological processor is connected to the culture pond. The forward and reverse biological processor has a water inlet and a water outlet, and the water inlet and the water outlet can operate bidirectionally. Large algae and microalgae are cultivated in the pool. There are three-stage sedimentation tanks in the sedimentation tank. Sea cucumbers are placed in the first and second-level sedimentation tanks. The breeding pool and ecological return pool are made of food-grade plastic plates. The specific work flow is as follows. Since the circulation volume of circulating water matches the breeding density in actual production, it is necessary to use algae substances and microorganisms to treat the breeding ponds, so as to maintain various indicators in the breeding ponds during the recycling process. Stablize. The aquaculture water in the breeding pond is pumped to the spin-type microfilter, and the clean water from the spin-type microfilter flows to the air-sieve protein separator, and the clean water from the air-sieve protein separator flows to the positive and negative biological processors. The outlet and water inlet of the reverse biological processor can work alternately to meet the working requirements of the forward and reverse, which can greatly improve the treatment effect. The sewage treated by the forward and reverse biological processor enters the sedimentation tank. Enter the ecological backwater pool, the algae and microalgae in the ecological backwater pool remove phosphate, nitrate, etc., and use it in the breeding pond through the pump, and the bag collector filters and collects the residual bait and fecal solids, and the remaining sewage flows Go to the sedimentation tank, the foam after the air screen protein separator flows to the sediment tank, and the residual bait fecal solids in the sediment tank are fermented and fed to the bait fish pond or tilapia culture pond for reuse, and the whole process is closed Circulation, no sewage discharge, no waste of residual bait and feces. It also reduces the overall operating cost while meeting environmental protection requirements. In addition, the equipment of this circulating water treatment system has strong processing capacity and good water treatment effect, which makes the whole breeding process even better. After raising this batch of shrimp, the water body can be reused. The macroalgae and microalgae cultivated in this process can reasonably remove phosphate and nitrate, and will not continue to accumulate. The solid-liquid separation effect in the water treatment device is good , reducing the load of biological treatment, maintaining the stability of water quality, one water pump completes all the water lifting and backwashing work, and there is no ozone or ultraviolet disinfection in the water treatment process, and all disinfection work is carried out in the culture pond. Microecological preparations Quantitative disinfection, process energy consumption is quite low, low cost.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of the present invention. within the scope of protection.

Claims (7)

1. a kind of indoor circulating water prawn high-density breeding technique is characterized in that it comprises a culture pond, a spin-type microfilter, an air sieve type protein separator, a positive and negative biological processor, a bag collector, a sediment pond, Bait fish ponds or tilapia culture ponds, sedimentation ponds, ecological return ponds, the spin microfiltration machine is connected to the culture ponds through the pump, the bag collector is used to collect the solid waste of the spin microfiltration machine, the spin microfiltration The clean water after machine treatment flows to the air screen type protein separator, and then flows to the forward and reverse biological processor. Type collectors and sediment tanks are connected to bait fish ponds or tilapia culture ponds. 2. A kind of indoor circulating water prawn high-density breeding process as claimed in claim 1, characterized in that: the ecological backwater pond is connected to the culture pond. 3. A kind of indoor circulating water prawn high-density culture technique as claimed in claim 1, is characterized in that: forward and reverse biological processor is connected with culture pond. 4. A kind of indoor circulating water prawn high-density culture technique as claimed in claim 1, is characterized in that: described positive and negative biological processor has a water inlet and a water outlet, and described water inlet and water outlet can be bidirectional run. 5. A kind of indoor circulating water prawn high-density culture technique as claimed in claim 1, is characterized in that: arrange and cultivate large algae and microalgae in the ecological backwater pool. 6. A kind of indoor circulation water prawn high-density culture technique as claimed in claim 1, it is characterized in that: three-stage sedimentation tanks are provided in the sedimentation tank, wherein sea cucumbers are put in the first and second-level sedimentation tanks. 7. A kind of indoor circulation water prawn high-density culture technique as claimed in claim 1, it is characterized in that: culture pond and ecological backwater pond are made of food-grade plastic board.

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