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Solar conveyer belt type automatic brine-evaporation-based salt making device and ecological recycling method for salt washing wastewater from saline-alkali soil

A conveyor belt and solar energy technology, which is applied in the field of solar conveyor belt automatic salt drying device and the ecological recycling of saline-alkali washing salt wastewater, can solve the problems of low efficiency of salt drying, difficulty in large-scale promotion, and long drying time of salt, and achieves The effect of high utilization rate of solar energy, reduction of engineering cost, and reduction of salinity

Active Publication Date: 2018-06-29
北京宝树农业科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fishpond-paddy model is mainly based on aquaculture, the overall engineering volume is large, the cost is high, and it is difficult to promote it on a large scale
The brine salt concentration is not enough in the direct construction of the sun-dried salt field, which is labor-intensive and time-consuming, and occupies a large area
There are problems such as high organic matter content, low salt content, low drying efficiency and long drying time in fish pond culture water.

Method used

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  • Solar conveyer belt type automatic brine-evaporation-based salt making device and ecological recycling method for salt washing wastewater from saline-alkali soil
  • Solar conveyer belt type automatic brine-evaporation-based salt making device and ecological recycling method for salt washing wastewater from saline-alkali soil
  • Solar conveyer belt type automatic brine-evaporation-based salt making device and ecological recycling method for salt washing wastewater from saline-alkali soil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0064] Embodiment 1. Solar conveyor belt type automatic drying salt system

[0065] The solar conveyor belt type automatic salt drying system of the present invention includes a water storage tank 8, a negative pressure ventilation system, a salt drying pond and a salt collection box 11;

[0066] The upper part of the water storage tank 8 is provided with a water inlet and the lower part is provided with a water outlet, and the water storage tank 8 is provided with a liquid level switch 9;

[0067] The negative pressure ventilation system includes a heat collector inlet 6, a negative pressure fan 5 and a heat exchange condensation pipe 7;

[0068] The sun-dried salt pool includes four thermal insulation walls 10, glass cover plate 2, thin-layer water-holding sun-dried salt conveyor belt 1, and toothed pulley 4; wherein the two opposite walls 10 are not of the same height, and the relatively higher wall 10 The bottom of the glass cover is provided with a water inlet; the glass...

Embodiment 2

[0075] Example 2. One-acre paddy field drainage fish culture-salt drainage ecological engineering test in Tongyu County, Baicheng City, Jilin Province

[0076] Tongyu County is located in the west of Jilin Province, adjacent to the Horqin Grassland in the west, and Heilongjiang Province in the north. The saline-alkali soil type is a typical heavy soda-alkaline soil, with an average annual precipitation of 400-500mm, concentrated in summer, and an annual evaporation of 1100-1300mm . The salinity of the river water in this area is generally 0.15-0.25g / L, and the salinity is composed of HCO 3— Na + Due to strong evaporation and concentration in lakes and swamps, the salinity is generally above 1.0g / L; the buried depth of groundwater is about 1-3m, most of which belong to the weak mineralization type, and the salinity is 0.5-3.0g / L within.

[0077] The test plot is surrounded by east, west, south, and high, and the north is low. The soil surface soil (0-20cm) has a pH of 10.03,...

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Abstract

The invention discloses a solar conveyer belt type automatic brine-evaporation-based salt making device and an ecological recycling method for salt washing wastewater from saline-alkali soil. The device mainly comprises a water storage tank, a negative-pressure ventilation system, a brine-evaporation-based salt making pond and a salt collecting tank. The method comprises the following steps: the position of an eco-engineering system is determined, and drainage ditches are constructed in saline-alkali soil in a semi-arid region, wherein the eco-engineering system comprises a buffer water storage tank, an ecological fish pond and the solar conveyer belt type automatic brine-evaporation-based salt making device; the salt washing wastewater is collected and discharged into the buffer water storage tank; the salt washing wastewater subjected to mineralization regulation is injected into the ecological fish pond for aquaculture, obtained salt washing wastewater is evaporated, concentrated and pumped into the solar conveyer belt type automatic brine-evaporation-based salt making device for brine-evaporation-based salt making, and coarse salt is collected. The brine-evaporation-based saltmaking efficiency is increased, brine-evaporation-based salt making unit area is reduced, and land utilization rate is increased; collection and utilization of salt ions in the irrigation salt washingwastewater are realized at lower cost, and the problem of salt fate in saline-alkali soil treatment is solved.

Description

technical field [0001] The invention belongs to the technical field of solar energy utilization, agricultural irrigation and resource utilization of farmland wastewater, and relates to a solar conveyor belt-type automatic salt drying device and an ecological recycling method for saline-alkali washing salt wastewater. Background technique [0002] Due to factors such as high concentration of salt ions, high hardness, and high pH, ​​it is difficult to recycle in irrigation and salt washing drainage, and random discharge and discharge can easily cause secondary pollution. At present, there are few studies on the desalination and desalination of farmland saline wastewater. The physical methods mainly refer to related technologies of seawater desalination, including distillation, freezing, membrane, crystallization, ion exchange, etc. The disadvantages of the above-mentioned technical means are that the processing cost is relatively high, and the scope of application in the agric...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01D3/06C02F1/14C09D133/04C09D175/04C09D7/61C05G3/80
CPCA23J1/148A23J3/16C01B32/05C01D3/06C02F1/14C05D9/00C05F11/00C05G3/00C05G3/80C09D133/04C09K17/02C09K2109/00C08L75/04C08K3/04C08K3/22C05F3/00C05F11/08C05G1/00Y02A20/212
Inventor 胡树文高子登冯浩杰汪顺义任雪芹
Owner 北京宝树农业科技有限公司