SU1421280A1 - Method of growing fishes in system with closed cycle of water supply - Google Patents

Abstract

The invention relates to fish farming and is aimed at improving the quality of water purification, improving mustache. Juvian fish content and non-mode. D. 1I of this, when growing fish in closed systems with water purification in a biofilter, the latter is seeded with chiropomid larvae after biofilm is formed with a thickness of 1-2 mm. This allows an increase in the quality of water and water purification. It is necessary to consider the conditions of the content of fish, since chironomid larvae transported from the biofi stream by the water flow serve as an additional fodder.

Description

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The invention relates to fishing, in particular, to growing fish in systems with a closed water supply cycle and with biological water purification.

The aim of the invention is to improve the quality of water purification, improve the conditions of the fish and simplify the method.

Combining the process of biological purification of water with the process of breeding chironomid larvae can significantly improve the quality of purification, as well as take away; the larvae from the biofilter serve as a good feed for fish, which simplifies the process, since there is no need for it. Most specifically grow live food.

 (lyusob isusstr. ll as follows.

The flow pools of the recirculation system of the fish breeding system are stockpiled, including a pump, an oxidation biofilter, an aerator) Heat; 1 Obstipnik system. They start a regular .1 feed; 1pppe the fish, maintaining a stable temperature and the content of the kis / yurod in the system. The water contaminated with the products of fish life from the pools is directed through the heat sink in the oxidant, the fi biofi ghtr, containing blues carriers, and then through the reservoir for settling and stabilizing the sludge and aerators back to the fish pools.

rioc. ie, the launch of the system. We at the first stage get the concentration of ammonia water concentrated and, at the same time, the accumulation of the Niirosomonas bakter, which convert ammonia into pitrites. Then the ammonia content in the water decreases. TC and papaklivakots nitrites, which in turn leads to a pair of Nitrobacteri l1e}) of the first nitrites to nitrates. Described 1P) 1st process of nptri (bicatii cation in biofi: 1) education m bi; - ;: pas aerated sites. In addition to O :: water.

After the image: -; ovani on the carriers of bio nits with a mass of 1 ----- 2 in the bio () zilism zate15. 1 chipponids, nrodo.zha vyran1.ivat fish. The chironomid larvae colonize the bionleck, and imitate the bacteria, vo-L, oros. 1 mi, detritus m and thus prevent the latent thickening of a bio-patch and the formation of a dead cpi-ainmecKoro layer in its upper layer. The qi by the water cudgel of ores is transferred to fish-breeding basins 1: s, where they are consumed as fish, which reduces the consumption in artificial feeds, and also increases the digestibility of d .mov.

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When the larvae reach mature age, they pupate, the pupae emerge on the water surface in the biofilter where mosquitoes fly. Mosquitoes live only a few days and feed. The mosquito females lay their clutches on the surface of the water and the biofilter, in the settling tank, and in fish-breeding basins, which is achieved by reproducing chiropomids. The thickness of the bio-slab of 1-2 mm is the optimum for the operation of the biofilter and the stable mode of water purification.

Example. A recirculating cyopic fish-breeding system containing flow-through fish basins, a heat exchanger, a rotated submersible biofilter with a plastic loading, filter-sump and aerator set a stable temperature of 1.7 ± 1 ° C and stock the pools with young rainbow trout with a rate of 50 kg pa of 1 m water. Fish feed t 1 ranulirovannymi feed. After two months from the start of operation of the installation, the biofilter plates are covered with a bio-slab of a crowd of 2 mm. Then, 1 kg of active sludge with Tanytarsns halophile larvae is added to the bio-ov) s. After 5 months of operation of the plant, the number of chironomid larvae reaches 8000 copies aa 1 m and the long letter stabilizes at this level. Ammonia and nitrite concentrations decrease () -: this allows an increase in the landing rate. As a result, the total daily weight gain of pi-.i6 increases by about 50% in comparison with the performance of the same amount without the use of chronomids.

Claims (1)

Invention Formula The method of growing fish in systems with a closed peak of water supply, providing for} C1e fish in the pool, feeding fish, water withdrawal from the pool, its fi lh, biological treatment with bio-bio {) hltr in aerobic fitness and aeration of water, maintaining a predetermined temperature, and returning water to the pool, as well as growing live fish feed, characterized in that, in order to improve the quality of water purification, the fish content and control method, the quality of the live food is diluted; 1chipok chiropomid, and The process of reconnaissance of chiropomid larvae is combined with the process of biological purification of water, for which the chironomid larva is sown in biofi pigs after the formation of a bio-patch loading; 1P1 to 1-2 mm.