Floculant for treating sewage

A technology of sewage treatment and flocculant, applied in the direction of flocculation/sedimentation water/sewage treatment, etc., can solve the problems of wide application range, low flocculation speed and high operating cost

Inactive Publication Date: 2005-01-05
孙传斌
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the main method for treating industrial and domestic waste water is chemical flocculation and sedimentation. At present, the s

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0072] Example 1:

[0073] The weight composition of the high-efficiency flocculant preparation for waste water treatment is as follows:

[0074] Polyacrylamide 20 parts salt 16 parts

[0075] Catalyst (1) 16.5 parts water 1000 parts

[0076] Among them, the catalyst (1) is the first formula. It consists of 8.5 parts of formaldehyde and 8 parts of dimethylamine, and the temperature is controlled at 38 °C ± . Use cold water to lower the temperature or stop adding formaldehyde. Moisturize at 40°C for 30-60 minutes to obtain a finished product.

[0077] Preparation process: First, heat 1000 parts of domestic water to 30°C-40°C in the reaction kettle, deepen the salt with a small amount of hot water and add it, slowly add polyacrylamide during stirring, and gradually heat up after adding, and keep stirring. Completely melt the polyacrylamide, control the temperature within 100°C, the optimum temperature is 35°C-60°C, then lower the temperature below 50°C, the optimum temperatur...

Example Embodiment

[0081] Example 2:

[0082] The weight composition of high-efficiency flocculant preparation materials for waste and sewage treatment is as follows;

[0083] Polyacrylamide 20 parts Salt 16 parts

[0084] Catalyst (1) 16.5 parts sulfuric acid or hydrochloric acid (note)

[0085] 1000 parts water

[0086] Note: When acid is used, the amount is adjusted according to the alkali PH value of the sewage, and the amount is adjusted according to the offset alkali value. During the preparation process, the input of acid is in no particular order; according to the actual application effect, acid or acid can be added to any formula in the present invention. substance. (Except for the formula of alkali hut, example actual example 5).

Example Embodiment

[0087] Example 3:

[0088] The weight composition of high-efficiency flocculant preparation materials for waste and sewage treatment is as follows;

[0089] Polyacrylamide 20 parts Salt 15 parts

[0090] Catalyst (1) 16.5 parts Aluminum sulfate 30-100 parts (Note)

[0091] 1000 parts water

[0092] Note: The dosage of aluminum sulfate is determined according to the test. The basis of the test is based on the pH and turbidity of the wastewater and the COD removal rate. According to the needs of wastewater treatment, one or more aluminum salts, potassium Salts, iron salts, wedges, etc. can also be added to the above-mentioned auxiliaries separately with this high-efficiency flocculant in the process of treating waste water. Water purifier for treatment purposes.

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PUM

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Abstract

A flocculant for treating sewage is prepared from polyacrylamide (1-40 wt portions), NaCl (1-40), catalyst (5-35) and water (800-1500). The said catalyst is prepared from formaldehyde (10-90 wt. portions), dimethylamine (15-95) and ammonia solution (or urea) (1-80). Its advantages include high speed (1-5) seconds), siple equipment, low cost, and no secondary pollution.

Description

technical field [0001] The invention relates to a waste water treatment agent, in particular to a flocculant for waste water treatment. Background technique [0002] Improving the utilization rate of water, reducing the discharge of waste water and protecting the living environment of human beings is one of the important tasks of the governments of various countries today. In the prior art, the main method for treating industrial and domestic waste water is chemical flocculation and sedimentation. At present, the shortcomings of known chemical flocculants in practical application are low flocculation speed, high operating cost, and wide application range. Contents of the invention [0003] The object of the present invention is to provide a polymer flocculant for waste water treatment with low flocculation speed, high operation cost and wide application range. [0004] The object of the present invention can be realized b...

Claims

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Application Information

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IPC IPC(8): C02F1/56C08K3/10C08K5/04C08K5/07C08L79/02
Inventor 孙传斌林沛孙新孙峰徐振东
Owner 孙传斌
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