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Water treatment composite preparation and preparation method and using method thereof

A composite preparation and water treatment technology, which is applied in water/sewage treatment, adsorbed water/sewage treatment, neutralized water/sewage treatment, etc. It can solve the problems of large investment, inability to meet sewage treatment requirements, and high cost

Inactive Publication Date: 2019-04-16
辽宁盛基建设基础工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention aims at the problems that the coagulation-sedimentation method or the adsorption method alone cannot meet the sewage treatment requirements, and the coagulation-sedimentation method and the adsorption method are used simultaneously to treat sewage with large investment and high cost, and provides a water treatment compound preparation and its application method

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  • Water treatment composite preparation and preparation method and using method thereof
  • Water treatment composite preparation and preparation method and using method thereof
  • Water treatment composite preparation and preparation method and using method thereof

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preparation example Construction

[0037] The second aspect of the present invention provides a method for preparing the above-mentioned water treatment compound preparation, the preparation method comprising the following steps:

[0038] Prepare a polyaluminum chloride aqueous solution with a mass concentration of 8g / L-12g / L;

[0039] Prepare a polyacrylamide aqueous solution with a mass concentration of 0.8g / L to 1.2g / L;

[0040] The aqueous solution of polyaluminum chloride, the aqueous solution of polyacrylamide and the fly ash are mixed according to the formula ratio to prepare the composite preparation for water treatment.

[0041] The second aspect of the present invention provides a method for using the above-mentioned water treatment compound preparation, which is characterized in that the use method includes the following steps: adjusting the pH value of the sewage to be treated to 7.0-8.0; Add it to the sewage to be treated, stir for 5 minutes to 30 minutes and then let it stand for 15 minutes to 30...

Embodiment 1

[0047] Weigh 1000 g of polyaluminum chloride and dissolve it in water to prepare an aqueous solution of polyaluminum chloride with a mass concentration of 10 g / L.

[0048] Weigh 100 g of anionic polyacrylamide and dissolve in water to prepare an aqueous solution of anionic polyacrylamide with a mass concentration of 1 g / L.

[0049] Measure 4.0L of polyaluminum chloride aqueous solution, 0.4L of polyacrylamide aqueous solution and 90g of fly ash, and mix them uniformly to prepare water treatment composite preparation A1.

[0050] Among them, the specific gravity of fly ash is 1.95-2.36, and the loose dry density is 450kg / m 3 ~700kg / m 3 , the specific surface area is 220m 2 / g~588m 2 / g.

Embodiment 2

[0052] Weigh 1000 g of polyaluminum chloride and dissolve it in water to prepare an aqueous solution of polyaluminum chloride with a mass concentration of 10 g / L.

[0053] Weigh 100 g of anionic polyacrylamide and dissolve in water to prepare an aqueous solution of anionic polyacrylamide with a mass concentration of 1 g / L.

[0054] Measure 3.0L of polyaluminum chloride aqueous solution, 0.1L of polyacrylamide aqueous solution and 70g of fly ash, and mix them uniformly to prepare water treatment composite formulation A2.

[0055] Among them, the specific gravity of fly ash is 1.95-2.36, and the loose dry density is 450kg / m 3 ~700kg / m 3 , the specific surface area is 220m 2 / g~588m 2 / g.

[0056] After adjusting the pH value of 100L coking sewage biochemically treated water sample to 7~8, add the prepared water treatment compound preparation A2, stir at 40r / min~70r / min for 5min, let it stand for 15min, and test the water sample The COD value and chromaticity meet the "Liaon...

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Abstract

The invention discloses a water treatment composite preparation, which is prepared from, by weight, 300-600 parts of polyaluminum chloride; 1-4 parts of polyacrylamide; 700-1000 parts of fly ash. Thewater treatment composite preparation has two performances of a coagulant and adsorbent, combines a coagulation sedimentation unit and an adsorption filtering unit into a whole, saves occupied space,is simple to operate and low in early-stage investment, and can further reduce COD and remove chroma and turbidity aiming at sewage subjected to biochemical treatment, an adsorbent does not need to bereplaced, nor backwashing equipment are arranged, the subsequent investment is less, and the cost of sewage treatment can be greatly reduced.

Description

technical field [0001] The technical field of sewage treatment of the present invention specifically relates to a water treatment compound preparation and its preparation method and use method. Background technique [0002] Industrial sewage is generally pretreated first, and then undergoes secondary biochemical treatment. If the effluent index does not meet the standard, advanced treatment is required. Advanced treatment methods include coagulation precipitation method, adsorption method, ozone oxidation method, catalytic oxidation method, Fenton reagent method, etc. Among them, the methods with good treatment effect, strong adaptability and simple operation mainly include coagulation-sedimentation method and adsorption method. [0003] The coagulation and sedimentation method is to add coagulants and coagulants to the sewage, and after stirring, the colloids, suspended particles and other pollutants in the sewage are destabilized and aggregated into flocs, which are preci...

Claims

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Application Information

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IPC IPC(8): C02F1/52C02F1/56C02F1/28C02F9/04C02F11/00
CPCC02F1/281C02F1/285C02F1/5236C02F1/5245C02F1/56C02F1/66C02F11/008C02F2001/007
Inventor 左宇王旭
Owner 辽宁盛基建设基础工程有限公司
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