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Method of using lake sediment and coal slag as compost

A technology for cultivating soil and bottom mud, which is applied in the field of environmental ecology, can solve the problems of increasing the implementation range and difficulty of bottom mud reuse, unfavorable promotion and implementation, and complicated treatment procedures, so as to solve the problem of soil utilization, easy to promote, and simple The effect of the operation

Inactive Publication Date: 2010-09-15
BEIJING NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of high-efficiency extractants used in existing patents is relatively high, and the treatment process is complicated, which undoubtedly increases the implementation scope and difficulty of conventional sediment reuse, which is not conducive to popularization and implementation

Method used

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  • Method of using lake sediment and coal slag as compost
  • Method of using lake sediment and coal slag as compost

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Experimental program
Comparison scheme
Effect test

Embodiment approach

[0012] Shown by accompanying drawing, the present invention is a kind of construction method of artificial cultivated soil. From top to bottom: 1 is lake sediment, 2 is cinder.

[0013] Before filling, the bottom mud is subjected to light sterilization treatment, and the cinder is sieved into large particle size particles (2-5cm) and small particle size particles (0-2cm). When potting, lay the large-sized particles on the bottom of the basin first, then fill the small-sized particles on it, and finally spread the lake bottom mud on the upper layer. In addition, according to the growth characteristics of planting plants, determine the volume ratio (1 / 4~1 / 3) of bottom sludge and coal cinder and the corresponding pretreatment. For example, drought-loving plants can relatively increase the proportion of cinders and shorten the infiltration time of water; when planting acid-loving plants, you can first wash the cinders with a small amount of water to reduce the alkalinity of cinde...

Embodiment 1

[0016] The culture soil is prepared according to the volume ratio of cinder and bottom mud of 1:4, and the cinder is soaked before potting to reduce alkalinity. Transplant gardenias into pots in March and water them thoroughly every 3 days. The leaves are evergreen throughout the year, and the flowers bloom lushly in June.

Embodiment 2

[0018] The culture soil is prepared according to the volume ratio of coal cinder and bottom mud of 1:3. Cultivate tomato seedlings in the cultivation soil in late April, and water them every 5 days until the fruit matures in September. The heavy metal content is tested, and all of them meet the national vegetable heavy metal limit implementation standard.

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Abstract

The invention discloses a method of effectively using lake sediment and industrial and agricultural waste coal slag as compost. The method comprises the following steps: screening coal slag into two particle sizes by utilizing a sieve; when filling the coal particles into a pot, laying large-size particles (2-5 cm) on the bottom of the pot firstly, and the filling small-size particles (0-2 cm) on the large-size particles, thereby preventing water accumulation on the bottom of the pot, keeping favorable air permeability and being beneficial to the growth of the plant root system; and finally, laying lake sediment as the upper layer, thereby providing nutrients required by plant growth. The invention solves the problem that excessive sediment siltation can accelerate lake swampiness, effectively utilizes rural waste and does not need power equipment and capital investment, thereby being beneficial to popularization and implementation.

Description

technical field [0001] The invention relates to the field of environmental ecology, in particular to a method for effectively utilizing lake bottom mud and industrial and agricultural waste cinders as culture soil. Background technique [0002] In recent years, human intervention such as industrial pollution, land reclamation from lakes, and fishery production has caused the excessive spread of aquatic plants in rivers and lakes. Aquatic plants are partly harvested by hand and consumed by fish as bait. A considerable part of plant residues deposits on the bottom of the lake every year, causing serious biofouling. This siltation has caused the shrinkage and degradation of thousands of shallow grass lakes in my country. At the same time, as the "source" and "sink" of lake pollutants, the sediment is an important part of the lake wetland ecosystem and has special importance in the lake water environment. Form secondary pollution to the lake water body, make the lake water pol...

Claims

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Application Information

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IPC IPC(8): A01G31/00C05F15/00C05F5/00C05F7/00
CPCY02A40/20
Inventor 崔保山蓝艳李夏范晓云张志明
Owner BEIJING NORMAL UNIVERSITY
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