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Treatment method of eutrophic aquatic product culture wastewater

An aquaculture and eutrophication technology, applied in energy wastewater treatment, animal husbandry wastewater treatment, special compound water treatment, etc. Ammonia nitrogen, nitrite, inability to reduce the content of heavy metal ions, etc., to achieve the effect of inhibiting the growth of algae, improving water pollution, and reducing the content

Inactive Publication Date: 2017-12-05
兰溪市普润斯水产养殖技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The Chinese invention patent of CN 102371145 B discloses a compound high-efficiency cyanobacteria-eutrophication water treatment agent, which is made of attapulgite clay, bentonite and natural zeolite through activation and modification, etc. The advantage of low cost, but its modification process for attapulgite clay, bentonite and natural zeolite is too complicated and cumbersome, and the treatment agent cannot reduce COD, ammonia nitrogen, nitrite in water, and cannot reduce heavy metal ions in water and soil Therefore, it cannot effectively improve the water quality of the water body

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The treatment method of eutrophic aquaculture wastewater comprises the following steps:

[0022] 1) Weigh 2 parts of ferric chloride hexahydrate and 0.2g of copper sulfate pentahydrate and add them into 100 parts of distilled water to fully dissolve them, and add them to 300 parts of 10% attapulgite slurry in parallel with 80ml of 0.1mol / L sodium carbonate solution, Control the pH value of the reaction end point to be 8, stir and age for 30 minutes, suction filter, wash with deionized water until neutral, dry, and then roast at 200 ° C for 1 hour to prepare the copper-iron-attapulgite adsorbent; 2 ) Put the gangue into a pulverizer to crush, pass through a 365-mesh sieve, and activate the coal gangue powder by roasting at 800°C for 3 hours to obtain a heat-activated gangue carrier sample. Accurately weigh 20 parts of the activated gangue carrier and put in In the bottle, sterilize with damp heat at 120°C for 20 minutes, add 3 parts of Rhodopseudomonas palustris, put it ...

Embodiment 2

[0024] The treatment method of eutrophic aquaculture wastewater comprises the following steps:

[0025] 1) Preparation of copper-iron-attapulgite adsorbent: Weigh 2.5 parts of ferric chloride hexahydrate and 0.3 parts of copper sulfate pentahydrate into 120 parts of distilled water to fully dissolve, and add 100ml of 0.15mol / L sodium carbonate solution to 350 In a 15% attapulgite slurry, control the pH value of the reaction end point to 8.2, stir and age for 45 minutes, filter with suction, wash with deionized water until neutral, dry, and then roast at 230 ° C for 3 hours to obtain Copper-iron-attapulgite adsorbent; Cu-iron-attapulgite adsorbent adsorbs H at room temperature 2 S generates Fe 1-xS and CuS regenerate elemental sulfur and a small amount of ferrous sulfate, which can recover elemental sulfur and effectively improve the regeneration rate of the adsorbent;

[0026] 2) Activation: Put coal gangue into a pulverizer to crush, pass through a 65-mesh sieve, and activa...

Embodiment 3

[0030] The method for treating eutrophic aquaculture wastewater includes: preparing copper-iron-attapulgite adsorbent, activating, loading, and purifying, specifically including the following steps:

[0031] Preparation of copper-iron-attapulgite adsorbent: crush attapulgite and pass through a 260-mesh sieve to make a slurry with a mass fraction of 15%, weigh 2 parts of ferric chloride hexahydrate and 0.3 part of copper sulfate pentahydrate and add 120 parts Fully dissolve in distilled water, add 100 parts of 0.15mol / L sodium carbonate solution into 320 parts of attapulgite slurry in parallel, control the pH value of the reaction end point to 8, stir and age, suction filter after 40 minutes, and wash with deionized water until Neutral, dried, and then roasted at 220 °C for 2 hours to obtain a copper-iron-attapulgite adsorbent; the copper-iron-attapulgite adsorbent adsorbs H at room temperature 2 S generates Fe 1-x S and CuS regenerate elemental sulfur and a small amount of fe...

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Abstract

The invention discloses a treatment method of eutrophic aquatic product culture wastewater. The method comprises the steps of preparing a copper steel-attapulgite adsorbent, carrying out activation, carrying out loading, and carrying out purification. The method has the beneficial effects that complex florae in a treatment agent metabolize oxidation resisting substances through a propagation action and a synergistic effect, and a stable ecosystem is generated, so that the activity of protozoans, microbes and aquatic organisms with a water purification function in water is recovered; a water purifying agent can be used for decomposing organic macromolecular substances in the water into saccharides, amino acids, vitamins, bio-active substances and the like, which are absorbent to animals and plants, degrading organic macromolecules and inhibiting algal growth; and COD, ammonia nitrogen and nitrite can be effectively removed from the water, the water pollution is improved, the concentration of dissolved oxygen is increased, the content of heavy-metal ions is lowered, the organic macromolecules are degraded, the growth of algae is inhibited, the flocculating settling action on suspended substances in the water is relatively high, and the degree of eutrophication of the aquatic product culture wastewater can be effectively relieved.

Description

technical field [0001] The invention relates to the field of purification and treatment of aquaculture wastewater, in particular to a treatment method for eutrophic aquaculture wastewater. technical background [0002] Eutrophication refers to the large amount of nutrients such as nitrogen and phosphorus required by organisms entering slow-flowing water bodies such as lakes, estuaries, and bays, causing algae and other plankton to multiply rapidly, the dissolved oxygen in the water body decreases, and fish and other organisms die in large numbers. Phenomenon. A large number of dead aquatic organisms are deposited at the bottom of the lake, decomposed by microorganisms, and consume a large amount of dissolved oxygen, causing a sharp decrease in the dissolved oxygen content of the water body, deteriorating the water quality, affecting the survival of fish, and greatly accelerating the eutrophication process of the water body. When eutrophication occurs in the water body, due ...

Claims

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Application Information

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IPC IPC(8): C02F3/34C12N1/20C12N11/14C02F103/20C02F101/30C02F101/16C12R1/38C12R1/125C12R1/10C12R1/46
CPCY02W10/37C02F3/34C02F3/342C02F2101/16C02F2101/166C02F2101/20C02F2101/30C02F2103/20C02F2305/06C12N1/20C12N11/14
Inventor 刘宏汉
Owner 兰溪市普润斯水产养殖技术有限公司
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