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Agent for synchronous nitrogen and phosphorus removal and preparation method thereof

A simultaneous denitrification, dephosphorization, and medicament technology, applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve problems such as difficult control

Pending Publication Date: 2022-01-14
贵州中车绿色环保有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As far as the current form is concerned, nitrogen and phosphorus are indicators that are difficult to control in the sewage treatment process. In practice, it is difficult to directly reduce the total phosphorus concentration to below 0.5mg / L by simple chemical precipitation methods, which cannot meet the increasingly stringent effluent standards. , the rest of the nitrogen and phosphorus removal technologies have certain defects, so it is an important development direction to develop an integrated agent that can realize the simultaneous removal of nitrogen and phosphorus, reduce the treatment cost and simplify the treatment process

Method used

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  • Agent for synchronous nitrogen and phosphorus removal and preparation method thereof
  • Agent for synchronous nitrogen and phosphorus removal and preparation method thereof
  • Agent for synchronous nitrogen and phosphorus removal and preparation method thereof

Examples

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preparation example Construction

[0020] The preparation method of the above-mentioned simultaneous denitrification and phosphorus removal agent, the specific steps include:

[0021] (1) Preparation of modified bentonite: get bentonite and roast it at 450° C. for 2 hours, put 100 g of bentonite after roasting into 500 ml of 20% lanthanum oxide aqueous solution for soaking and modification, and keep solution pH=9 during soaking and modification -10, after soaking for 3-6 hours, wash with distilled water until neutral and filter, dry the filtered bentonite at 100°C, roast at 500°C for 2 hours, grind and sieve, the mesh size is 100 mesh, and the modified Bentonite;

[0022] (2) Take modified bentonite, magnesium chloride, polyaluminum ferric chloride, quicklime and magnetic powder according to parts by weight, and put them into a grinding agitator in turn, continue grinding, stir and mix evenly, and obtain a compound medicament;

[0023] (3) Sieve the compound agent with a sieve size of 100 mesh to obtain the si...

Embodiment 1

[0025] Embodiment 1: Take by weighing 3g modified bentonite, 2g magnesium chloride, 0.5g polyaluminium ferric chloride, 1g quicklime and 0.5g magnetic powder, grind with a grinding agitator, then stir with a stirrer for 30min to make each component evenly mixed, and After the mixed compound agent is passed through a 100-mesh sieve, the simultaneous denitrification and phosphorus removal agent can be obtained.

Embodiment 2

[0026] Embodiment 2: Take by weighing 4g modified bentonite, 3g magnesium chloride, 0.8g polyaluminum ferric chloride, 2g quicklime and 0.8g magnetic powder, grind with a grinding agitator, then stir with a stirrer for 30min, each component is uniformly mixed, and After the mixed compound agent is passed through a 100-mesh sieve, the simultaneous denitrification and phosphorus removal agent can be obtained.

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Abstract

The invention relates to the technical field of treatment of sewage rich in nitrogen and phosphorus, in particular to an agent for synchronous nitrogen and phosphorus removal and a preparation method thereof. The invention provides an agent for synchronous nitrogen and phosphorus removal. The agent for synchronous nitrogen and phosphorus removal is specifically prepared from modified bentonite, magnesium chloride, polyaluminum ferric chloride, quick lime and magnetic powder. The invention also provides a preparation method of the agent for synchronous nitrogen and phosphorus removal. The preparation method comprises the following specific steps: preparing modified bentonite from lanthanum oxide; and weighing raw materials, grinding the raw materials, carrying out uniform stirring and mixing, and performing sieving to obtain the agent for synchronous nitrogen and phosphorus removal. The agent for synchronous nitrogen and phosphorus removal overcomes the defect that nitrogen and phosphorus are difficult to remove synchronously in a traditional process, and is low in production cost, good in nitrogen and phosphorus removal effect, simple in manufacturing process, small in sludge amount and capable of avoiding secondary pollution, and generated floccules are easy to settle.

Description

technical field [0001] The invention relates to the technical field of sewage treatment rich in nitrogen and phosphorus, in particular to a simultaneous nitrogen and phosphorus removal agent and a preparation method thereof. Background technique [0002] With the development of my country's industry in recent years, some chemical companies will produce a large amount of sewage rich in nitrogen and phosphorus in the production process, and these sewage will be directly discharged into rivers and other water bodies, resulting in eutrophication of water bodies and polluting surface water and groundwater. , while surface water and groundwater are currently the most important water supply sources in my country. Therefore, in order to curb the increasing spread of nitrogen and phosphorus pollution in water bodies, effective nitrogen and phosphorus removal technologies must be used to link the current situation. [0003] When nitrogen, phosphorus and other substances leave the envir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C02F101/10C02F101/16
CPCC02F1/00C02F2101/16C02F2101/105
Inventor 夏君曹旭孙秋双张冰心杨昌力
Owner 贵州中车绿色环保有限公司
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