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Flocculating agent for sewage treatment and preparation method thereof

A technology of sewage treatment and flocculant, which is applied in water/sewage treatment, water/sludge/sewage treatment, flocculation/sedimentation water/sewage treatment, etc., which can solve the problems of high cost, large dosage and high moisture content of sludge , to achieve the effect of strong adhesiveness, less secondary pollution and strong flocculation effect

Inactive Publication Date: 2018-07-27
NINGBO JIANTONG ENVIRONMENTAL PROTECTION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among flocculants, inorganic flocculants have disadvantages such as large dosage and high moisture content of sludge.
And the existing organic polymer flocculant, though can overcome above-mentioned deficiency, but the cost is higher

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] A kind of flocculant for sewage treatment provided by the present embodiment comprises 30 parts by weight of sodium polyamide xanthate, 15 parts of starch phosphate, 10 parts of chitosan, 5 parts of acrylamide, 20 parts of initiator, 5 parts of Ferric sulfate, 10 parts of nano ferric oxide, 20 parts of nano ferrous chloride, 5 parts of modifier, said modifier includes 30 parts of chloroacetic acid, 20 parts of cationic etherifying agent, 15 parts of polycyclic Oxychlorohydrinamine, 5 parts of graphene.

[0012] The preparation method of the above-mentioned flocculant for sewage treatment, firstly, 30 parts of chloroacetic acid, 20 parts of cationic etherification agent, 15 parts of polyepichlorohydrin amine, and 5 parts of graphene are mixed and stirred, and the temperature is 60-70 ° C. Heated in a water bath for 30 minutes to prepare a modifier and set aside; then 30 parts of sodium polyamide xanthate, 15 parts of starch phosphate, 10 parts of chitosan, 5 parts of acr...

Embodiment 2

[0015] A kind of flocculant for sewage treatment provided in this embodiment, its general composition and preparation method are the same as in Example 1, the main difference is that the flocculant includes 50 parts by weight of polyamide sodium xanthate, 20 parts Starch phosphate, 15 parts of chitosan, 10 parts of acrylamide, 30 parts of initiator, 10 parts of ferric sulfate, 15 parts of nano ferric oxide, 30 parts of nano ferrous chloride, 10 parts of modifier.

[0016] After the flocculant prepared in this embodiment is used in sewage treatment, the flocculant makes the turbidity removal rate of sewage reach more than 99%.

Embodiment 3

[0018] A kind of flocculant for sewage treatment provided in this embodiment, its general composition and preparation method are the same as in Example 1, the main difference is that the flocculant includes 40 parts by weight of polyamide sodium xanthate, 18 parts Starch phosphate, 12 parts of chitosan, 8 parts of acrylamide, 25 parts of initiator, 8 parts of ferric sulfate, 15 parts of nano ferric oxide, 20 parts of nano ferrous chloride, 8 parts of modifier.

[0019] After the flocculant prepared in this embodiment is used in sewage treatment, the flocculant makes the turbidity removal rate of sewage reach more than 99%.

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PUM

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Abstract

The invention discloses a flocculating agent for sewage treatment. The flocculating agent comprises the following components in parts by weight: 30-50 parts of sodium polyamide xanthogenate, 15-20 parts of starch phosphate, 10-15 parts of chitosan, 5-10 parts of acrylamide, 20-30 parts of an initiator, 5-10 parts of iron sulfate, 10-15 parts of nanometer triiron tetraoxide, 20-30 parts of nanometer ferrous chloride, and 5-10 parts of a modifier; the modifier comprises the following components in parts by weight: 30-40 parts of chloroacetic acid, 20-30 parts of a cationic etherifying agent, 15-30 parts of polyepichlorohydrin-amine, and 5-10 parts of graphene. The flocculating agent for sewage treatment has excellent environmentally friendliness, most parts of the agent is biodegradable withless secondary pollution, and usage efficiency of the flocculating agent is improved. An experiment shows that the rate of deturbidity of sewage reaches 99% or above.

Description

technical field [0001] The invention relates to a flocculant, in particular to a flocculant for sewage treatment and a preparation method thereof. Background technique [0002] In recent years, with the rapid development of China's national economy, the contradiction between water supply and demand has become increasingly prominent. Water scarcity and water pollution have posed a serious threat to the development of China's national economy, industrial and agricultural production, and people's lives. Sewage treatment and reuse is the main way to solve the water crisis. The flocculation and sedimentation method is an economical and convenient method for sewage treatment. In the flocculation and sedimentation method, the choice of flocculant is the most critical. Among flocculants, inorganic flocculants have disadvantages such as large dosage and high moisture content of sludge. However, although the existing organic polymer flocculants can overcome the above-mentioned sho...

Claims

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Application Information

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IPC IPC(8): C02F1/56C02F1/54C02F1/52
CPCC02F1/5236C02F1/5263C02F1/542C02F1/56C02F2001/007
Inventor 史建林
Owner NINGBO JIANTONG ENVIRONMENTAL PROTECTION TECH
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