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Method for removing organophosphorus pesticide in water by using water treatment plant sludge

A technology of organophosphorus pesticides and water purification plants, which is applied in water/sludge/sewage treatment, adsorption water/sewage treatment, water pollutants, etc., and can solve the problems of resource utilization of organophosphorus pesticide-polluted water purification plant sludge, etc. , to achieve the effect of solving the problems of disposal and pollution control of organophosphorus pesticides, cheap raw materials, and high water treatment efficiency

Inactive Publication Date: 2014-06-11
BEIJING NORMAL UNIVERSITY
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Problems solved by technology

[0005] The purpose of the present invention is to provide a new type of adsorbent for organophosphorus pesticides in water bodies—water purification plant sludge, so as to provide a reference for solving the problems of water body organophosphorus pesticide pollution control and water purification plant sludge resource utilization

Method used

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  • Method for removing organophosphorus pesticide in water by using water treatment plant sludge
  • Method for removing organophosphorus pesticide in water by using water treatment plant sludge
  • Method for removing organophosphorus pesticide in water by using water treatment plant sludge

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Embodiment Construction

[0015] The specific examples are used below to illustrate the adsorption capacity of the water purification plant sludge to organophosphorus pesticides in the water body.

[0016] Using sludge from a water purification plant in Beijing as raw material, the organic matter content in the sludge is 107mg / g. The sludge from the water purification plant is dried, crushed, ground, mixed, and passed through a 100-mesh sieve.

[0017] Weigh 20 mg of water purification plant sludge samples into glass bottles, and add them to 40 mL of a certain concentration of chlorpyrifos and glyphosate solutions respectively, shake well, place in a constant temperature shaker with a rotation speed of 150 r / min, and vibrate for 15 min respectively. , 30min, 1h, 2h, 4h, 6h, 8h, 12h, 18h, 24h, 36h and 48h, the samples were taken out, the solution was centrifuged at 4000r / min for 15min, and chlorpyrifos and glyphosate in the supernatant were determined by high performance liquid chromatography concentra...

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Abstract

The invention discloses a novel organophosphorus pesticide adsorbent-water treatment plant sludge, and belongs to the technical field of water treatment. The method comprises the following steps: dehydrating, air-drying, grinding and uniformly mixing the water treatment plant sludge, feeding into an organophosphorus pesticide water solution with a certain concentration with a certain solid-to-liquid ratio, inspecting adsorbing capacity change along with the time so as to determine an adsorption balancing time; and meanwhile, further inspecting the adsorbing capacity and removal rate of the water treatment plant sludge to the organophosphorus pesticide in different concentrations after the adsorption balancing so as to verify the adsorbing capacity of the water treatment plant sludge to the organophosphorus pesticide. The method of adsorbing the organophosphorus pesticide by using the water treatment plant sludge is simple, low in cost, environment-friendly and excellent in adsorption effect; and meanwhile, the problems of water treatment plant sludge disposal and organophosphorus pesticide water pollution are solved.

Description

technical field [0001] The invention belongs to the technical field of water treatment, and specifically uses sludge from a water purification plant as an adsorbent to remove organophosphorus pesticides in water bodies. Background technique [0002] Organophosphorus pesticides are a class of insecticides and herbicides widely used in the world, and have become the mainstay of my country's pesticide market. In 2010, the total output of pesticides in my country was 2.2622 million tons, of which organophosphorus pesticides accounted for 80%. Because organophosphorus pesticides are easy to degrade and have a short residual period, they have long been considered as relatively safe pesticides for humans and aquatic organisms. However, in recent years, the toxic effects of organophosphorus pesticides have been continuously reported. For example, chlorpyrifos can Induce breast cancer, hinder the development of the central nervous system, and have toxic effects on the liver even at l...

Claims

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Application Information

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IPC IPC(8): C02F1/28C02F101/30
Inventor 裴元生赵媛媛
Owner BEIJING NORMAL UNIVERSITY
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