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Preparation method of wastewater treatment agent

A wastewater treatment agent and a technology for preparation steps, which are applied in the field of wastewater treatment agent preparation, can solve the problems of high cost, complex composition, long cycle, etc., and achieve the effects of reducing impact, reducing COD and ammonia nitrogen content, and using a simple method of use.

Inactive Publication Date: 2018-03-06
李长沛
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ammonia nitrogen is an important factor causing water eutrophication, and its discharge is large, its composition is complex, and its toxicity is strong; while COD will cause the deterioration of natural water quality, destroy the balance of water body, and lead to the death of almost all organisms except microorganisms
Both of them are extremely harmful to the water environment and are very difficult to deal with.
Although the existing technology can treat ammonia nitrogen and COD in wastewater, its treatment process is complex, difficult to control, long cycle, high cost, and pungent odor at the treatment site

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The preparation method of waste water treatment agent comprises the following preparation steps:

[0020] 1) Weigh raw materials according to the following parts by weight: 25 parts of calcium hydroxide, 36 parts of ferric citrate, 15 parts of sepiolite, 20 parts of tannin;

[0021] 2) Mix all the raw materials evenly and grind them to 100 mesh;

[0022] 3) At -0.095Mpa, 90°C, after vacuum drying for 30 minutes, inject into the ultrafine pulverizer, the pressure when injecting into the ultrafine pulverizer is 0.8MPa, the working pressure of the ultrafine pulverizer is 0.2MPa, the ultrafine pulverizer The internal temperature in the oven is 40°C, and it needs to be pulverized for 15 minutes.

[0023] To COD content is 1026mg / L, and ammonia nitrogen content is 1987mg / L in the waste water, drops into 0.5kg the waste water treatment agent that this embodiment prepares according to every L waste water, after 60min, in the waste water, COD content is 6.7mg / L, The ammonia ni...

Embodiment 2

[0025] The preparation method of waste water treatment agent comprises the following preparation steps:

[0026] 1) Weigh raw materials according to the following parts by weight: 35 parts of calcium hydroxide, 27 parts of ferric citrate, 23 parts of sepiolite, 14 parts of tannin;

[0027] 2) Mix all the raw materials evenly and grind them to 200 mesh;

[0028] 3) At -0.095Mpa, 85°C, after vacuum drying for 45 minutes, inject into the ultrafine pulverizer, the pressure when injecting into the ultrafine pulverizer is 0.6MPa, the working pressure of the ultrafine pulverizer is 0.4MPa, the ultrafine pulverizer The internal temperature in the oven is 35°C, just crush for 20 minutes.

[0029] To the wastewater whose COD content is 1147mg / L and ammonia nitrogen content is 2217mg / L, drop 0.5kg of the wastewater treatment agent prepared in this embodiment according to every L of wastewater. After 60min, in the wastewater, the COD content is 1.2mg / L. The ammonia nitrogen content is 1...

Embodiment 3

[0031] The preparation method of waste water treatment agent comprises the following preparation steps:

[0032] 1) Weigh raw materials according to the following parts by weight: 45 parts of calcium hydroxide, 18 parts of ferric citrate, 30 parts of sepiolite, and 8 parts of tannin;

[0033] 2) Mix all the raw materials evenly and grind them to 300 mesh;

[0034] 3) At -0.095Mpa, 75°C, after vacuum drying for 60 minutes, inject into the ultrafine pulverizer, the pressure when injecting into the ultrafine pulverizer is 0.4MPa, the working pressure of the ultrafine pulverizer is 0.6MPa, the ultrafine pulverizer The internal temperature in the oven is 30°C, and it needs to be pulverized for 25 minutes.

[0035] To COD content is 1125mg / L, ammonia nitrogen content is in the waste water of 2013mg / L, drops into 0.5kg the waste water treatment agent that this embodiment prepares according to every L waste water, after 60min, in the waste water, COD content is 1.8mg / L, The ammonia ...

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PUM

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Abstract

The invention belongs to the technical field of wastewater treatment, and in particular relates to a preparation method of a wastewater treatment agent. The preparation method comprises the followingpreparation steps: 1) weighing raw materials in parts by weight: 25-45 parts of calcium hydroxide, 18-36 parts of ferric citrate, 15-30 parts of sepiolite and 8-20 parts of tannin; 2) uniformly mixingall the raw materials, and crushing the raw materials to 100-300 meshes; and 3) carrying out vacuum drying at a pressure of -0.095MPa and a pressure of 75-90 DEG C for 30-60min, injecting the powderinto an ultramicro pulverizer for pulverizing for 15-25min, wherein the working pressure of the ultramicro pulverizer is 0.2-0.6MPa. The wastewater treatment agent prepared with the method provided bythe invention can effectively and remarkably reduce the COD and ammonia nitrogen contents in wastewater and reduce the influence of the wastewater on the environment.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, in particular to a preparation method of a wastewater treatment agent. Background technique [0002] Wastewater refers to the general term for water discharged during residents' activities and runoff rainwater. It includes domestic sewage, industrial wastewater, and other useless water such as primary rain tracks flowing into drainage pipes and channels. With the rapid development of my country's chemical industry, various new chemical products are applied to all walks of life, especially in heavy polluting industries such as medicine, chemical industry, electroplating, printing and dyeing. Industrial wastewater flows directly into channels, and rivers and lakes pollute surface water. If it is highly toxic, it will lead to the death or even extinction of aquatic animals and plants. Industrial wastewater may also seep into groundwater and pollute groundwater. If the surrounding resid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C02F103/16
CPCC02F1/00C02F2103/16
Inventor 李长沛
Owner 李长沛