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Preparation method of composite polyaluminum chloride molten iron treatment agent

A technology of polyaluminum chloride and treatment agent, which is applied in water treatment parameter control, water/sewage treatment, chemical instruments and methods, etc. It can solve problems such as domestic pollution, difficult treatment, and difficult purification, and achieve COD and turbidity reduction , Improve stability, good stability performance effect

Pending Publication Date: 2022-01-21
广州市芦苇环保科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the increasingly serious water pollution has further exacerbated the already serious shortage of water resources.
Industrial wastewater is an important source of pollution, with the characteristics of large volume, wide area, complex composition, high toxicity, difficult to purify and difficult to treat.
In our country, the sewage discharge problem of township enterprises has not been effectively solved. Industrial wastewater pollutes farmland and rivers, endangering people's life and health.
Third, life pollution
[0004] However, the current flocculants are not effective, and the development of new high-efficiency coagulants has become a research focus.

Method used

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  • Preparation method of composite polyaluminum chloride molten iron treatment agent
  • Preparation method of composite polyaluminum chloride molten iron treatment agent

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preparation example Construction

[0016] A preparation method of composite polyaluminum chloride molten iron treatment agent, it comprises the following steps:

[0017] After the kaolin tailings are crushed, they are calcined at high temperature with an activator;

[0018] Add the calcined kaolin tailings to the acid solution and heat it with microwave;

[0019] Suction filter the supernatant liquid after microwave heating, add calcium aluminate powder, stabilizer and alkali regulator to the filtrate, carry out aging polymerization, and concentrate after cooling to obtain polyaluminum ferric chloride;

[0020] Composite polyaluminum ferric chloride and graphite powder to obtain a composite polyaluminum chloride ferric water treatment agent.

[0021] Kaolin tailings contain silica, alumina, potassium oxide, sodium oxide, calcium oxide and other useful components. The alumina in kaolin tailings is mainly α-Al 2 o 3 The form exists, the activity of this form is very low, and it hardly reacts with acid, so it i...

Embodiment 1

[0034] A preparation method of composite polyaluminum chloride molten iron treatment agent, it comprises the following steps:

[0035] Weigh 300g of kaolin tailings, crush and pass through a 60-mesh sieve, collect the sieved powder, add 60g of sodium hydroxide and 120g of sodium carbonate as activators, mix well, transfer to a muffle furnace for calcination, and the calcination temperature is 700°C , calcined for 2h;

[0036] Put the calcined kaolin tailings into the there-necked bottle, add 20% (mass fraction) hydrochloric acid of 3 times the mass, soak the kaolin tailings, then transfer to the microwave heating device, set the heating power to 300W, and the heating temperature is 70°C, heating time is 8min;

[0037] Suction filter the supernatant liquid after microwave heating, add calcium aluminate powder, dihydrogen phosphate and calcium oxide to the filtrate, adjust the alkalization degree of the filtrate to 1, pH value to 2.5, heat up to 55°C for aging polymerization A...

Embodiment 2

[0040]A preparation method of composite polyaluminum chloride molten iron treatment agent, it comprises the following steps:

[0041] Weigh 300g of kaolin tailings, crush and pass through an 80-mesh sieve, collect the sieved powder, add 60g of sodium hydroxide and 180g of sodium carbonate as activators, mix well, transfer to a muffle furnace for calcination, and the calcination temperature is 800°C , calcined for 1.5h;

[0042] Put the calcined kaolin tailings into the there-necked bottle, add 15% (mass fraction) hydrochloric acid of 5 times the mass, soak the kaolin tailings, then transfer to the microwave heating device, set the heating power to 250W, and the heating temperature is 70°C, heating time is 7min;

[0043] Suction filter the supernatant after microwave heating, add calcium aluminate powder, dihydrogen phosphate and calcium oxide to the filtrate, adjust the alkalinity of the filtrate to 1.5, pH value to 3, heat up to 60°C for aging polymerization After aging for...

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Abstract

The invention provides a preparation method of a composite polyaluminum chloride molten iron treatment agent, and relates to the technical field of water treatment. The invention relates to a preparation method of a composite polyaluminum chloride molten iron treatment agent. The preparation method comprises the following steps: crushing kaolin tailings, and calcining the crushed kaolin tailings and an activating agent at high temperature; adding the calcined kaolin tailings into an acid solution, and carrying out microwave heating; carrying out suction filtration on the supernatant liquid after microwave heating, adding calcium aluminate powder, a stabilizer and an alkali regulator into the filtrate, carrying out curing polymerization, cooling and concentrating to obtain polyaluminum ferric chloride; and compounding the polyaluminum ferric chloride with graphite powder to obtain the composite polyaluminum chloride molten iron treatment agent. The preparation method can be used for preparing the composite polyaluminum chloride molten iron treatment agent with extremely high adsorption capacity.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a preparation method of a composite polyaluminum chloride iron water treatment agent. Background technique [0002] Water is the source of life and one of the most precious natural resources on which human beings depend. With the development of economy and society and the increase of population, the shortage of water resources in our country will face more and more severe challenges. However, the increasingly serious water pollution has further exacerbated the already serious shortage of water resources. One is industrial pollution. Industrial wastewater is an important source of pollution, which has the characteristics of large volume, wide area, complex composition, high toxicity, difficult purification and treatment. In our country, the problem of sewage discharge by township enterprises has not been effectively solved. Industrial wastewater pollutes farmland and ri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C02F1/52C02F1/28
CPCC02F1/00C02F1/5245C02F1/283C02F2209/08C02F2209/11
Inventor 阮俊雄
Owner 广州市芦苇环保科技有限责任公司