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High efficiency and low toxicity phosphorus remover for wastewater, and preparation method of phosphorus remover

A high-efficiency, low-toxicity, phosphorus-removing agent technology, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problem that the solution of phosphorus removal in wastewater is not very ideal, restricts the surface water environment, and has low disposal efficiency. and other problems to achieve the effect of improving usability and applicability, reducing dosing costs, and avoiding secondary pollution

Inactive Publication Date: 2019-03-22
江西绿鄱环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(4) A large part of phosphorus in the sewage treatment plant is removed by precipitation of metal phosphates (such as calcium phosphate), and there is a risk of entering the water body
[0003] There are many treatment technologies for phosphorus pollution. The biological method, chemical precipitation method, crystallization method, adsorption method, artificial wetland method and other processes have different phosphorus removal principles and application ranges, and have different advantages and disadvantages. The solution for phosphorus treatment is not very ideal, and is affected and restricted by many environmental factors, causing many factories to discharge sewage that does not meet the standard into the environment in order to save costs, polluting water resources
At the same time, the phosphorus removal technology of polluted surface water has the disadvantages of low disposal efficiency and long cycle, which seriously restricts the improvement of surface water environment.

Method used

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  • High efficiency and low toxicity phosphorus remover for wastewater, and preparation method of phosphorus remover

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Experimental program
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Effect test

Embodiment 1

[0017] Prepare materials according to the mass ratio of the formula of the efficient and low-toxic phosphorus removal agent, wherein sodium acetate 0.24kg, polyphosphorus material 0.12kg, zero-valent iron 0.1kg, attapulgite 0.15kg, activated alumina 0.07kg, sepiolite 0.09kg, clay 0.17kg, water 0.06kg. First, the zero-valent iron and attapulgite were mixed and placed in a planetary ball mill at a speed of 1100r / min, and ground for 4 hours before use. Then put sodium acetate, polyphosphorus material, activated alumina, sepiolite, clay, water, and the mixture of zero-valent iron and attapulgite in a mixer and stir for 1 hour, then dry for 6 hours to obtain powdery Phosphorus.

[0018] Prepare a phosphorus-containing solution with pure water, in which the total phosphorus content is 2.8mg / L, take 500mL and place it in a conical flask, add 10mg, 20mg, 50mg and 100mg of the prepared phosphorus removal agent respectively, and set the control without phosphorus removal agent . Stir...

Embodiment 2

[0020] Prepare materials according to the mass ratio of the formula of efficient and low-toxic phosphorus removal agent, wherein sodium acetate 2.4kg, polyphosphorus material 1.15kg, zero-valent iron 1.0kg, attapulgite 1.8kg, activated alumina 0.75kg, sepiolite 0.8kg, clay 1.5kg, water 0.6. First, the zero-valent iron and attapulgite were mixed and placed in a planetary ball mill at a speed of 1100r / min, and ground for 4 hours before use. Then 2.4kg of sodium acetate, 1.15kg of polyphosphorus material, 0.75kg of activated alumina, 0.8kg of sepiolite, 1.5kg of clay, and 0.6kg of water were mixed and placed in a stirrer to stir evenly, and then put into the Extrude and granulate in a granulator, dry for 6 hours after granulation, and obtain a phosphorus removal agent.

[0021] Take 200L of water samples (total phosphorus content is 1.2mg / L) from a certain black and odorous water body in the south, and divide them into 2 parts, 100kg each, and add the prepared agent and water ac...

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Abstract

The invention relates to a high efficiency and low toxicity phosphorus remover for wastewater, and a preparation method of the phosphorus remover. The phosphorus remover for the wastewater is preparedfrom the following components by weight percent: 20-35% of sodium acetate, 8-30% of a polyphosphorus material, 8-14% of zero-valent iron, 10-30% of attapulgite, 5-8% of activated alumina, 5-12% of sepiolite, 10-25% of clay and 5-7% of water. The method comprises the steps of selecting the materials by weight percentage, mixing the zero-valent iron with the attapulgite, and placing the mixture ina planetary ball mill for first grinding; performing dry mixing, then adding water while stirring, and drying in the air at a cool place to obtain a powdered phosphorus remover; or directly adding into a screw granulator for granulating so as to obtain the granular phosphorus remover. The high efficiency and low toxicity phosphorus remover for the wastewater is cheap and easily available in raw materials and simple to prepare, and avoids secondary pollution to the treated water while efficiently removing phosphorus for a long time.

Description

technical field [0001] The invention belongs to the technical field of environmental protection, and relates to a waste water treatment agent and a preparation method thereof. Background technique [0002] Due to the rapid development of the economy and society, the current degree of industrialization is getting higher and higher, and the improvement of people's living standards, the discharge of phosphorus-containing wastewater has become an important reason for the decline in the quality of the ecological environment, and has always been the focus of attention. Especially as phosphorus pollution in surface water, it has seriously affected the quality of water environment. The most direct harm of phosphorus pollution is the eutrophication of water bodies, which is mainly manifested in the massive reproduction of algae in water bodies, which makes the proper purification function of water bodies lose, and affects the production and living environment of human beings. The fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/58C02F101/10
CPCC02F1/58C02F2101/105
Inventor 吴代赦马志飞桂梦瑶徐宇李建龙
Owner 江西绿鄱环保科技有限公司