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Method for preparing soil conditioner from high-ammonia-nitrogen wastewater and application

A soil conditioner and high ammonium nitrogen technology, applied in the fields of application, soil conditioning materials, chemical instruments and methods, etc., can solve the problems of high production cost and complicated preparation methods, and achieve the effect of low cost and removal of saline-alkali components

Active Publication Date: 2020-09-01
浙江亲水园生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Aiming at the defects of complicated preparation method and high production cost of the soil conditioner in the prior art, the present invention provides a low-cost method for producing the soil conditioner, in which volcanic ash containing fine-crystalline zeolite is put into the anaerobically treated Flocculation treatment is carried out in high ammonia nitrogen wastewater, and the treated pozzolan can be used as a soil conditioner after simple processing, which not only efficiently removes the most difficult ammonia nitrogen component in high ammonia nitrogen wastewater, but also prepares a soil conditioner

Method used

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  • Method for preparing soil conditioner from high-ammonia-nitrogen wastewater and application
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  • Method for preparing soil conditioner from high-ammonia-nitrogen wastewater and application

Examples

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Effect test

Embodiment 1

[0045] The invention provides a kind of method utilizing high ammonia nitrogen waste water to prepare soil conditioner, comprises the following steps:

[0046] a) Firstly, anaerobic microorganisms are added to the pond body containing animal husbandry wastewater to allow slow anaerobic fermentation to obtain fermented wastewater, and then the fermented wastewater is introduced into the black film biogas digester for sufficient anaerobic fermentation, Obtain the fermented waste water containing a large amount of ammonia nitrogen;

[0047] b) Take the effluent from the black film biogas digester (anaerobic fermentation) and introduce it into a special processing pool (about 30-100 cubic meters), with a stirring fan installed at the bottom; add late Tertiary to early Quaternary to the special processing pool Incompletely diagenetic volcanic ash (particles with a particle size of 0.1 mm or less) formed by mixing intermediate-acid volcanic ash and pyroclastic flow, said volcanic as...

Embodiment 2

[0064] This example is basically the same as Example 1, except that: in step c), the prepared volcanic ash powder in step d) is added to the prepared microbial compound fertilizer in step c), and the mixture is fully stirred to form a suspended microbial compound liquid fertilizer , use according to the method described in embodiment 1 as soil conditioner.

Embodiment 3

[0066] This example is a test of the effect of volcanic ash with different zeolite compositions on the removal of ammonia nitrogen in wastewater.

[0067] Experimental object: the high ammonia nitrogen wastewater obtained after fermentation in step a) of Example 1.

[0068] Experimental method: Different groups are set according to the type and proportion of volcanic ash components: Group A: amorphous pumice: fine crystal zeolite (mass ratio) = 7:3; group B: amorphous pumice; group C: fine crystal The removal efficiency of three groups of volcanic ash to ammonia nitrogen in wastewater was tested by different contact time.

[0069] Detection method: use rapid ammonia nitrogen detection test paper to detect.

[0070] Experimental steps: 1. Preparation stage: Prepare 1L of high-ammonia-nitrogen wastewater; 10 disposable water cups (transparent), 1 100ml beaker, 1 100ml measuring cylinder, 1 electronic scale, 2 stirring rods, ammonia nitrogen rapid detection test paper. Test the...

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Abstract

The invention belongs to the field of soil conditioners, and discloses a method for preparing a soil conditioner from high-ammonia-nitrogen wastewater and application, the method comprises the following steps: 1) performing anaerobic fermentation treatment on the high-ammonia-nitrogen wastewater to obtain high-ammonia-nitrogen wastewater; 2) adding volcanic ash containing amorphous pumice and fine-grained zeolite into the high-ammonia-nitrogen wastewater, fully stirring and mixing, stopping stirring after carrying out flocculation and sedimentation treatment for a period of time, standing to obtain treated wastewater and volcanic ash mud at the bottom, taking out the volcanic ash mud, and leading out the wastewater for continuous treatment; and (3) dehydrating and crushing the volcanic ashmud in the step (2) to obtain volcanic ash powder which is used as a soil conditioner and can effectively replace sodium ions and calcium ions in soil, so that the problems of soil hardening and salinization are solved. The method provided by the invention not only can effectively remove high-ammonia-nitrogen sewage, but also can prepare a cheap and efficient soil conditioner, and can realize integrated treatment of wastewater and soil.

Description

technical field [0001] The invention belongs to the technical field of soil improvers, and in particular relates to a method and application for preparing soil improvers by using high-ammonia-nitrogen waste water. Background technique [0002] In the past 30 years, China's agriculture has developed rapidly. Farmers have used a large amount of chemical fertilizers and pesticides in pursuit of rapid growth of crops, especially low-quality and cheap chemical fertilizers and pesticides, resulting in the rapid consumption of soil nutrients and the destruction of soil microbial ecosystems. A large amount of saline-alkali heavy metal components in the soil accumulate in the soil, which makes the soil more and more compacted and salinized, resulting in a decrease in soil fertility; it is not conducive to the absorption of nutrients by crops and hinders the growth of crops; dead seedlings, rotten roots, rotten roots, pests and other problems . According to statistics from the Minist...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/02C05G3/80C05G5/27C02F1/42C09K109/00C02F101/16
CPCC09K17/02C05D9/00C05G3/80C05G5/27C02F1/42C09K2109/00C02F2001/425C02F2101/16C05F7/00C05F11/08
Inventor 丁庆
Owner 浙江亲水园生物科技有限公司