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Method for recycling treatment of antibiotic-containing aquaculture wastewater by combining temperature difference and concentration difference dual-drive membrane distillation with high-performance adsorbent

A technology of aquaculture wastewater and concentration difference, applied in chemical instruments and methods, filtration treatment, sedimentation treatment, etc., can solve the problems of difficulty in antibiotics and the shortage of agricultural water, achieve good adsorption effect, good market potential and application value, realize The effect of organic combination

Active Publication Date: 2020-06-19
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Solve the problems of difficult treatment of antibiotics in aquaculture discharge water and shortage of agricultural water

Method used

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  • Method for recycling treatment of antibiotic-containing aquaculture wastewater by combining temperature difference and concentration difference dual-drive membrane distillation with high-performance adsorbent
  • Method for recycling treatment of antibiotic-containing aquaculture wastewater by combining temperature difference and concentration difference dual-drive membrane distillation with high-performance adsorbent
  • Method for recycling treatment of antibiotic-containing aquaculture wastewater by combining temperature difference and concentration difference dual-drive membrane distillation with high-performance adsorbent

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Such as figure 1 As shown, a temperature difference / concentration difference double-driven membrane distillation device specifically includes a low osmotic pressure solution storage tank 1, a low osmotic pressure solution circulation pump 2, a high osmotic pressure solution storage tank 6, a high osmotic pressure solution circulation pump 5 and reaction compartment. A porous hydrophobic membrane is arranged in the reaction compartment to divide the reaction compartment into a hot side chamber 3 and a cold side chamber 4 . The low osmotic pressure solution storage tank 1, the low osmotic pressure solution circulation pump 2 and the hot side chamber 3 are connected to form a circulation loop, and the low osmotic pressure solution circulates in the loop. The hypertonic solution storage tank 6, the hypertonic solution circulation pump 5 and the cold side chamber 4 are connected to form a circulation loop, and the hypertonic solution circulates in the loop. Under the combi...

Embodiment 2

[0035] The difference between this embodiment and Example 1 is that the types of antibiotics in wastewater are not limited to tetracyclines, and other types of antibiotics (sulfonamides, macrolides, penicillins, cephalosporins) are also suitable for this process; pre-concentration The multiples of different metal organic framework materials can be adjusted according to specific needs; the types of metal organic framework materials are not limited to MIL series materials, and the same effect can also be achieved by adding other types (UIO, ZIF, etc. series) of metal organic framework materials. Aspects are the same.

[0036] The preparation method of the UIO and ZIF series metal-organic framework materials is specifically:

[0037] UIO-66: Take 0.234 g of zirconium tetrachloride and 0.339 g of terephthalic acid, add 72 mL of N,N-dimethylformamide and 2 mL of acetic acid and stir well, then transfer them into a high-temperature reaction kettle and put them in a drying oven at 12...

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Abstract

The invention discloses a temperature difference / concentration difference dual-drive membrane distillation device which is remarkably different from a conventional membrane distillation device in thata hot-side solution is a low-salt solution and a cold-side solution is a high-salt solution, so that the device becomes a temperature difference / concentration difference dual-drive membrane distillation device, and the steam permeation efficiency is improved. Meanwhile, the invention discloses a method for treating aquaculture wastewater containing high-concentration antibiotics by combining themembrane distillation device and a high-performance adsorbent. The method comprises the following steps: pre-concentrating antibiotic-containing wastewater and synchronously diluting a fertilizer solution by using a dual-drive membrane distillation technology, reducing the antibiotic content of the concentrated aquaculture wastewater through a high-performance adsorbent, combining the treated wastewater with the diluted fertilizer solution, and further diluting the fertilizer solution through automatic control to meet the NPK (nitrogen, phosphorus and potassium) requirements of different crops. The breeding industry and the planting industry can be seamlessly connected through the process flow, efficient allocation of water resources and nutrient substances is achieved, and the method is alow-consumption and environment-friendly wastewater treatment process and an efficient agricultural solution.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and in particular relates to a method for combined use of temperature difference / concentration difference double-driven membrane distillation and high-performance adsorbent to treat aquaculture wastewater containing high-concentration antibiotics and synchronously realize integrated irrigation of agricultural water and fertilizer. Background technique [0002] Antibiotics are widely used in the prevention and treatment of diseases in clinical medicine and the growth promotion of aquaculture organisms. Antibiotics are a new class of ionizable organic pollutants, and the pollution caused by them has been listed as an important environmental problem by many developed countries. Antibiotics are poorly absorbed by the body and highly water-soluble. They often enter the environment in the active form (parent or metabolite) along with human and livestock excretion, aquaculture and pharmaceutical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F9/02B01J20/22B01J20/30C02F101/30C02F103/20
CPCB01J20/226C02F1/001C02F1/285C02F1/447C02F9/00C02F2001/007C02F2101/30C02F2103/20
Inventor 马准李梦华王群张璐李宁徐冬梅高军
Owner SHANDONG UNIV OF SCI & TECH