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Combined purification system of reed wetland and composite porous media ball and its construction method and application

A technology of porous media and purification system, applied in chemical instruments and methods, inorganic chemistry, alkali metal compounds, etc., can solve the problems of unsuitability of reed field aquaculture water body, operating cost membrane pollution, etc., and achieve excellent purification effect and maintenance. Easy to manage and easy to operate

Inactive Publication Date: 2017-01-25
OCEAN UNIV OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, reed field farming is obviously different from traditional farming. Generally speaking, it requires a lot of water, but the requirements for water volume vary with seasonal changes, and intermittent drainage. After fish and crab fishing and reed harvesting, the reed field Most of them are in an anhydrous state, so the traditional treatment technology is not applicable to the water body of reed field cultivation
For example, in the existing aquaculture water purification technology, the membrane filtration method mainly relies on membrane technology to effectively separate the pollutants in the water body, but there are still certain limitations in the application of large-scale aquaculture wastewater treatment with large water volume, operating costs and membrane pollution. problems are obstacles to its widespread application

Method used

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  • Combined purification system of reed wetland and composite porous media ball and its construction method and application
  • Combined purification system of reed wetland and composite porous media ball and its construction method and application
  • Combined purification system of reed wetland and composite porous media ball and its construction method and application

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Effect test

Embodiment 1

[0024] The combined purification system of the present invention comprises reed ponds 4 and active purification filter ponds 8 arranged successively in the pond body, that is, the reed pond 4 with reeds 2 growing between the front wall 5 and the partition wall 6 and the rear wall 9 and the partition wall 6 The active purification filter tank 8 filled with cinder-zeolite composite porous medium balls 10, wherein the water inlet valve 1 is set on the front wall 5 of the reed pool 4, and the outlet hole 7 of the reed pool is set under the partition wall 6, the whole The water outlet 11 of the system is arranged on the rear wall 9 close to the bottom of the active purification filter tank 8 .

[0025] The construction method of the above-mentioned joint purification system: set up the joint purification system on the way through which the discharged reed field culture water flows. made, and the water inlet valve 1 is set on the front wall 5 of the water surface of the reed pool 4 ...

Embodiment 2

[0031] Taking the reed field culture water as the influent water source, the initial concentrations of ammonia nitrogen and COD are 1.7mg / L and 50mg / L respectively, and the filling quantity of composite porous media balls calculated by the above method is 300. Put the cinder-zeolite composite porous medium ball prepared and matured after 30 days into the active purification filter of the purification system, and conduct a preliminary effect analysis on the method of the present invention. When the influent flow rate is 10L / h and the pollution load is 0.48m 3 / (m 2 Under the operating conditions of d), when the average concentrations of ammonia nitrogen and COD in the influent are 1.7mg / L and 50mg / L respectively, after the water flows through the combined purification system of reed wetland and cinder-zeolite composite porous media balls, the average concentration of ammonia nitrogen and COD The removal efficiencies reached 50.5% and 52.3%, respectively.

Embodiment 3

[0033]Grind the coal cinder and zeolite to a powder with a particle size of 0.8mm; soak the above powder cinder with 7mol / L hydrochloric acid for 24h, and wash it with water until the pH of the cleaning solution is 6; mix 200g of the treated cinder with zeolite Mix 100g of it evenly and place it in a ball forming machine, add PVA organic binder to make cinder-zeolite composite porous media balls with a diameter of 2.5-4cm; dry the above cinder-zeolite composite porous media balls at 60°C, use Soak in clean water, change the water every other day, take it out and dry it after 2 weeks.

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Abstract

The invention relates to a combined purification system of a reed wetland and a composite porous medium ball as well as a construction method and the application of the combined purification system. The system is used for absorbing and purifying ashimita aquaculture effluent water. The ashimita aquaculture effluent water firstly flows into a reed pond of the reed wetland uniformly through an overflow weir and then is naturally purified for the first time; after being purified by the reed wetland, the ashimita aquaculture effluent water is purified by the coal cinder-zeolite composite porous medium ball in an active purification filter tank in an intensified way; the purified water flows back into the ashimita aquaculture water. The combined purification system is capable of effectively removing ammonia nitrogen and organic matters in the water, has the advantages of being free of pollution, low in cost, easy to operate and convenient to maintain and manage, is be used in an ecological repairing method and can be widely applied to maintaining and improving the quality of the ashimita aquaculture water.

Description

technical field [0001] The invention belongs to water quality purification technology, and in particular relates to a combined purification system of reed wetland and composite porous medium balls, a construction method and application. Background technique [0002] Reed field farming is a field project constructed in reed wetlands. It is an ecological farming economic model that simultaneously carries out fish, crab farming and reed planting. However, with the overall development of the reed field aquaculture industry towards an intensive, high-density, high-yield model, over-stocking over the years has led to the continuous accumulation of ammonia nitrogen, organic matter and other pollutants in the reed field water, which has become one of the main sources of water pollution in the reed field . [0003] Existing aquaculture water purification technologies mainly include membrane filtration method, aeration blow-off method, electrochemical method, ozonation method, biolog...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F9/14B01J20/24B01J20/28B01J20/30C02F1/28C02F3/32
CPCY02W10/10
Inventor 田伟君俞慧博周宇航金鑫刘庆黄汝英白洁
Owner OCEAN UNIV OF CHINA
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