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Bionomic precipitator

A precipitant and ecological technology, applied in the direction of flocculation/sedimentation water/sewage treatment, sustainable biological treatment, biological water/sewage treatment, etc., can solve the problems of pollution, large amount of flocs, slow sedimentation speed, etc., and achieve the preparation process The process is simple, the floc sedimentation speed is fast, and the flocculation speed is fast.

Inactive Publication Date: 2012-03-28
HEBEI AGRICULTURAL UNIV.
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As far as the overall production and application of precipitants in my country is concerned, it is still difficult to find matching products. The main manifestations are: the existing non-polar precipitants have single functions, limited range of applicable water bodies, and large usage. Large volume, slow sedimentation speed, difficult sludge dehydration and high cost of sludge disposal, especially aluminum ions remaining in the water body, will cause unnecessary pollution; organic synthetic polymer precipitants not only have high production costs, but also Moreover, it is harmful to human health during the production and synthesis process, and it is difficult to degrade after use. It accumulates in the natural environment and exists for a long time, causing secondary pollution to the environment, and a small part of the degraded substances are very toxic and carcinogenic.
Existing precipitants are difficult to meet the sedimentation needs in the pretreatment stage of constructed wetland sewage purification

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] For the sewage of a paper mill, the main indicators of the water quality before treatment are: SS is 1067mg / L, CODcr is 4800mg / L, and the chroma is 96.

[0019] The preparation method of the used ecological precipitant is as follows: first, according to the percentage by weight, after breaking and stirring 45% of reeds, 35% of water hyacinth and 20% of lotus leaves, soaking in deionized water for 13 days, extracting 30% of the concentrated solution , to prepare component A; then mix vermiculite and diatomaceous earth in a ratio of 2:1 by weight, grind to 380 mesh at a temperature of 150-350°C, and then mix in the mixture with the above-mentioned vermiculite and diatomite Activated carbon with the same mass and the same level of particles, and stir evenly to form powder, to prepare component B; mix component A and component B at a weight ratio of 1:1.5, add to a high-speed kneader, heat to 85 ° C and stir In 20 minutes, the ecological precipitant is prepared. The ecolog...

Embodiment 2

[0022] For the wastewater from a paper mill, the main indicators of the water quality before treatment are: SS is 1067mg / L, CODcr is 4800 mg / L, and the chroma is 96.

[0023] The preparation steps of the ecological precipitant used are as follows: first, according to the percentage by weight, 40% of reeds, 30% of water hyacinth, and 15% of lotus leaves are broken and stirred, soaked in deionized water for 14 days, and 30% of the concentrated solution is extracted , to prepare component A; then mix the vermiculite and diatomaceous earth with a ratio of 2:1 by weight, grind to 400 mesh at a temperature of 150-350°C, and then mix in activated carbon of the same quality and grade of particles, and Stir evenly to form a powder to obtain component B; mix component A and component B at a weight ratio of 1:1.7, add to a high-speed kneader, heat to 90°C and stir for 25 minutes to obtain this ecological sediment agent. The precipitating agent is added to the sewage according to 0.5% of...

Embodiment 3

[0026] For the sewage of a paper mill, the main indicators of the water quality before treatment are: SS is 1067mg / L, CODcr is 4800mg / L, and the chroma is 96.

[0027] The preparation steps of the ecological precipitant used are as follows: first, according to the percentage by weight, 50% of reeds, 40% of water hyacinth and 20% of lotus leaves are broken and stirred, soaked in deionized water for 15 days, and 30% of the concentrated solution is extracted , to prepare component A; then mix vermiculite and diatomaceous earth in a ratio of 2: 1 by weight, grind to 450 mesh at a temperature of 150-350° C., and then mix in activated carbon of the same mass and the same level of particles, and Stir evenly to form a powder to obtain component B; mix component A and component B at a weight ratio of 1:2, add to a high-speed kneader, heat to 90°C and stir for 30 minutes to obtain this ecological sediment agent. The ecological precipitant is added to the sewage according to 0.3% of the...

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Abstract

The invention discloses a bionomic precipitator and a preparation method and an application method thereof, which are used for sewage purification and pretreatment of integrated constructed wetland. The bionomic precipitator contains A ingredient and B ingredient at proportion of 1: 1.4-2 in parts by weight, wherein the A ingredient contains 40-50 wt% of reed, 30-40 wt% of eichhornia crassipes and 15-25wt% of lotus leaf, and the B ingredient contains diatomite, vermiculite and active carbon at proportion of 1:2:3 in parts by weight. The A ingredient is prepared through the following steps: breaking and blending reed, eichhornia crassipes and lotus leaf at above proportion by weight, soaking the mixture in deionized water and distilling 30wt% of concentrated solution, and the B ingredient is prepared as follows: mixing and grinding the diatomite, vermiculite and active carbon at proportion of 1:2:3 in parts by weight to powder. The bionomic precipitator is prepared by mixing the A ingredient and the B ingredient at proportion of 1: 1.4-2 in parts by weight, adding the mixture into a kneader and then blending. When the bionomic precipitator is used, the dosage of the bionomic precipitator is 0.2-0.65% of the sewage by weight. The bionomic precipitator is economic, efficient and high in bionomic safety.

Description

technical field [0001] The invention relates to the field of sewage purification treatment, in particular to a precipitation technology applied to the sewage purification and pretreatment stage of composite constructed wetlands, in particular to an ecological precipitant applied to the sewage purification and pretreatment of composite constructed wetlands and its preparation method and application method. Background technique [0002] With the rapid development of my country's social economy, the amount of sewage discharge is increasing year by year. With the development of new ecological technologies in the past few years, the constructed wetland method of sewage treatment has become more and more popular. In order to prevent the constructed wetland system from carrying excessive Suspended solids (SS) or impurities are clogged, and pretreatment is required. The effect of the precipitant in the pretreatment stage plays an important role in the stable operation of the system. A...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C02F1/52C02F3/32
CPCY02W10/10
Inventor 王崇宇贾柠宁李楠马文瀚苏航卢丽杰陈寅嵩王寅邢文超路雯潇
Owner HEBEI AGRICULTURAL UNIV.
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