CN106397025A - Soil activator for restoring heavy-metal soil and preparation method of soil activator - Google Patents

Abstract

The invention discloses a soil activator for restoring heavy-metal soil. The soil activator is prepared from the following ingredients in parts by weight: 60-80 parts of humic acid, 30-40 parts of kaolin, 20-40 parts of cordierite, 20-30 parts of xanthan gum, 30-50 parts of urea, 30-40 parts of potassium sulfate and 20-50 parts of straws. Simultaneously, the invention further discloses a preparation method of the soil activator. Compared with the traditional technologies, the soil activator and the preparation method thereof have the advantages that the time consumption of soil restoration is relatively low, and the regular production of foodstuffs is not affected; the problem that the soil is lack of micronutrients caused by the long-term usage of a passivator is solved; the method is simple and easy in operation, and a large number of human resources are not required to be input; heavy metals are removed from the soil by making full use of the existing soil restoration technologies.

Description

A kind of soil activating agent for remediating heavy metal soil and preparation method thereof

Technical field

The invention belongs to agriculture field is and in particular to a kind of soil activating agent for remediating heavy metal soil and its preparation Method.

Background technology

In China existing about 1 × 108hm2 arable land, there are about 1/5 and be subject to different degrees of polluting, cause grain to subtract every year Product reaches 2.5 × 109kg, and agriculture total losses amount reaches more than 1 × 1011 yuan every year.Meanwhile, the dirts such as the heavy metal that soil pollution causes Dye thing content overproof, and be enriched in human body and animal by food, endanger human and livestock health, cause human cancer and other diseases Deng.

China's soil restoring technology research is started late, regional development lack of uniformity in addition, soil types diversity, pollution Site characteristic variability, pollution type complexity, the factor such as technical need diversity, mainly based on phytoremediation.Plant is repaiied The farmland of recovering technology repairing heavy metal pollution is excessively single, and time-consuming for reparation, can affect grain normal production cycles.

Content of the invention

Goal of the invention：Present invention aims to the deficiencies in the prior art, provide a kind of native for remediating heavy metal The soil activating agent of earth.

Another object of the present invention is to providing the preparation method of above-mentioned soil activating agent.

Technical scheme：In order to reach foregoing invention purpose, the present invention is specifically achieved like this：One kind is used for repairing weight The soil activating agent of metal soil, including the component of following parts by weight：60 ~ 80 parts of humic acid, 30 ~ 40 parts of kaolin, 20 ~ 40 parts of cordierite, 20 ~ 30 parts of xanthans, 30 ~ 50 parts of urea, the stalk of 30 ~ 40 parts of potassium sulfate and 20 ~ 50 parts.

The method preparing the soil activating agent for remediating heavy metal soil, comprises the following steps：

（1）By kaolin, cordierite, crushed stalk mixes；

（2）By humic acid, xanthans, urea, potassium sulfate adds in step 1 mixture, continuously stirred 20 ~ 30 minutes；

（3）In 40 ~ 50 degrees Celsius of lower baking step 2 gained mixtures, and gained drying object is sieved, powdery dress wraps into storehouse.

Wherein, after in described step 3, drying object is sieved, Task-size Controlling is below 200 mesh.

Beneficial effect：Compared with conventional art, rehabilitating soil takes less the present invention, does not affect the normal production of grain； Solve the problems, such as that Long-Time Service passivator causes the disappearance of soil micronutrient element；Method is simple to operation, need not put into big The human resources of amount；Make full use of existing soil restoring technology, remove the heavy metal in soil.

Specific embodiment

Embodiment 1：

Parts by weight are 30 parts of kaolin, 20 parts of cordierites, 20 parts of crushed stalk mixing；Then by 60 parts of humic acid, 20 parts Xanthans, 30 parts of urea, 30 parts of potassium sulfates add and mix, continuously stirred 20 ~ 30 minutes；Gained is dried under 40 ~ 50 degrees Celsius Mixture, and gained drying object is sieved, powdery dress wraps into storehouse.

Embodiment 2：

Parts by weight are 40 parts of kaolin, 40 parts of cordierites, 50 parts of crushed stalk mixing；Then by 80 parts of humic acid, 30 parts Xanthans, 50 parts of urea, 40 parts of potassium sulfates add and mix, continuously stirred 20 ~ 30 minutes；Gained is dried under 40 ~ 50 degrees Celsius Mixture, and gained drying object is sieved, powdery dress wraps into storehouse.

Embodiment 3：

Parts by weight are 35 parts of kaolin, 30 parts of cordierites, 30 parts of crushed stalk mixing；Then by 70 parts of humic acid, 25 parts Xanthans, 40 parts of urea, 35 parts of potassium sulfates add and mix, continuously stirred 20 ~ 30 minutes；Gained is dried under 40 ~ 50 degrees Celsius Mixture, and gained drying object is sieved, powdery dress wraps into storehouse.

Embodiment 4：

Parts by weight are 30 parts of kaolin, 25 parts of cordierites, 40 parts of crushed stalk mixing；Then by 6 parts of humic acid, 30 parts of Huangs Virgin rubber, 35 parts of urea, 30 parts of potassium sulfates add and mix, continuously stirred 20 ~ 30 minutes；Dry gained to mix under 40 ~ 50 degrees Celsius Compound, and gained drying object is sieved, powdery dress wraps into storehouse.

Embodiment 5：

Parts by weight are 40 parts of kaolin, 35 parts of cordierites, 45 parts of crushed stalk mixing；Then by 75 parts of humic acid, 20 parts Xanthans, 45 parts of urea, 40 parts of potassium sulfates add and mix, continuously stirred 20 ~ 30 minutes；Gained is dried under 40 ~ 50 degrees Celsius Mixture, and gained drying object is sieved, powdery dress wraps into storehouse.

Claims (3)

1. a kind of soil activating agent for remediating heavy metal soil is it is characterised in that include the component of following parts by weight：60 ~ 80 parts of humic acid, 30 ~ 40 parts of kaolin, 20 ~ 40 parts of cordierite, 20 ~ 30 parts of xanthans, 30 ~ 50 parts of urea, The stalk of 30 ~ 40 parts of potassium sulfate and 20 ~ 50 parts.

2. the method preparing soil activating agent for remediating heavy metal soil is it is characterised in that comprise the following steps：

（1）By kaolin, cordierite, crushed stalk mixes；

（2）By humic acid, xanthans, urea, potassium sulfate adds in step 1 mixture, continuously stirred 20 ~ 30 minutes；

（3）In 40 ~ 50 degrees Celsius of lower baking step 2 gained mixtures, and gained drying object is sieved, powdery dress wraps into storehouse.

3. the method for the soil activating agent for remediating heavy metal soil according to claim 2 is it is characterised in that described After in step 3, drying object is sieved, Task-size Controlling is below 200 mesh.