Preparation method of municipal sewage treating agent

A municipal sewage and treatment agent technology, applied in water/sewage treatment, water/sludge/sewage treatment, chemical instruments and methods, etc., can solve the problem of reduced drug efficacy, large dosage of chemicals, single function of sewage treatment agent, etc. question

Inactive Publication Date: 2016-07-20
刘平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The sewage treatment agent mainly used now has a single function, so it is necessary to add various agents such as flocculants, corrosion inhibitors, and fungicides in the water treatment system. Large, expensive, and various reagents will resist each other through various chemical reactions, resulting in reduced efficacy

Method used

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  • Preparation method of municipal sewage treating agent

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Embodiment 1

[0020] A preparation method of municipal sewage treatment agent, comprising the following steps:

[0021] Step 1, in parts by weight, take 50 parts of dry straw, pulverize, add 5 parts of sodium cyanoborohydride, 6 parts of ammonium cerium nitrate and 100 parts of gelatin solution, mix evenly, raise the temperature to 40°C, keep it warm for 2 hours, and then Add 4 parts of polyethyl acrylate, 1 part of polyacrylonitrile and 2 parts of glutaraldehyde, raise the temperature to 45°C, keep it warm for 4 hours, cool down to 5°C, and filter to obtain a solid;

[0022] Step 2, in parts by weight, add 2 parts of hydroxyethylidene diphosphonic acid and 1 part of polyol phosphate to 50 parts of water, stir for 4 hours, then add 2 parts of isothiazolinone, 3 parts of sepiolite, 1 part of starch xanthate, 2 parts of magnesium sulfate heptahydrate, 1 part of chitosan, 3 parts of N, N-dimethylmethylene diphosphonic acid, 2 parts of lecithin, 1 part of lignin, and mix evenly to obtain Mixtu...

Embodiment 2

[0026] A preparation method of municipal sewage treatment agent, comprising the following steps:

[0027] Step 1, in parts by weight, take 65 parts of dry straw, pulverize, add 8 parts of sodium cyanoborohydride, 7 parts of ammonium cerium nitrate and 125 parts of gelatin solution, mix evenly, raise the temperature to 45°C, keep it warm for 1.5 hours, and then Add 6 parts of polyethyl acrylate, 3 parts of polyacrylonitrile and 5 parts of glutaraldehyde, raise the temperature to 50°C, keep it warm for 3 hours, cool down to 8°C, and filter to obtain a solid;

[0028] Step 2, in parts by weight, add 6 parts of hydroxyethylidene diphosphonic acid and 3 parts of polyol phosphate to 70 parts of water, stir for 5 hours, then add 6 parts of isothiazolinone, 7 parts of sepiolite, 4 parts of starch xanthate, 6 parts of magnesium sulfate heptahydrate, 3 parts of chitosan, 5 parts of N, N-dimethylmethylene diphosphonic acid, 4 parts of lecithin, 3 parts of lignin, mixed evenly to obtain ...

Embodiment 3

[0032] A preparation method of municipal sewage treatment agent, comprising the following steps:

[0033] Step 1, in parts by weight, take 90 parts of dry straw, pulverize, add 5 parts of sodium cyanoborohydride, 7 parts of ammonium cerium nitrate and 110 parts of gelatin solution, mix evenly, raise the temperature to 50 ° C, keep it warm for 1 hour, and then Add 5 parts of polyethyl acrylate, 2 parts of polyacrylonitrile and 3 parts of glutaraldehyde, raise the temperature to 45°C, keep it warm for 4 hours, cool down to 5°C, and filter to obtain a solid;

[0034] Step 2, in parts by weight, add 4 parts of hydroxyethylidene diphosphonic acid and 3 parts of polyol phosphate to 65 parts of water, stir for 4 hours, then add 3 parts of isothiazolinone, 6 parts of sepiolite, 3 parts of starch xanthate, 4 parts of magnesium sulfate heptahydrate, 2 parts of chitosan, 4 parts of N, N-dimethylmethylene diphosphonic acid, 3 parts of lecithin, 2 parts of lignin, mixed evenly to obtain M...

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Abstract

The invention provides a preparation method of a municipal sewage treating agent.The method comprises the steps of firstly, picking dry straw, pulverizing the straw, adding a solution of sodium cyanoborohydride, ammonium ceric nitrate and gelatin, mixing the materials to be uniform, raising the temperature, then adding poly(ethyl acrylate), polyacrylonitrile and glutaraldehyde, raising the temperature, lowering the temperature, and conducting filtering, so that solid matter is obtained; then adding etidronic acid and polyhydric alcohol phosphate ester to water, conducting stirring, adding isothiazolinone, sepiolite, starch xanthate, magnesium sulfate heptahydrate, chitosan, N, N-dimethyl methylene diphosphonic acid, lecithin and lignin, and mixing the materials to be uniform, so that a mixture (I) is obtained; finally, adding a sodium hydroxide solution to the mixture (I) to adjust pH to 6.0-7.0, adding organic acid and the obtained solid matter, mixing the materials to be uniform, and then leaving the mixture standing still, so that the municipal sewage treating agent is obtained.By means of the municipal sewage treating agent, the chemical oxygen demand of sewage can be lowered to 63 mg / L, the biochemical oxygen demand can be lowered to 28 mg / L, suspended solids can be decreased to 35 mg / L, and total phosphorus can be decreased to 0.37 mg / L.

Description

technical field [0001] The invention belongs to the technical field of sewage treatment agents, and in particular relates to a preparation method of municipal sewage treatment agents. Background technique [0002] my country is a country with a shortage of water resources. The per capita water resources are only 1 / 4 of the world's, and the distribution of water resources is seriously uneven. How to alleviate the shortage of water resources and pollution has become an urgent problem. In order to solve the problem of water shortage, in addition to increasing sources of income, reducing expenditure, and comprehensive utilization, pollution control has gradually become one of the basic principles that our country must adhere to for a long time. [0003] During the use of municipal sewage, a lot of polluting impurities have been added, including more organic matter, inorganic salt ions, ammonia nitrogen, phosphate and microorganisms, so the excessive growth of microorganisms, f...

Claims

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Application Information

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IPC IPC(8): C02F1/00
CPCC02F1/00
Inventor 刘平
Owner 刘平
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