A method for preparing organic fertilizer by using sugar beet meal as a conditioner and using sludge composting

A technology for conditioner and sugar beet pulp, applied in the field of organic fertilizer preparation, can solve the problems of inability to effectively control nitrogen loss, odor mass transfer efficiency, etc., to enhance product competitiveness, control nitrogen loss, and reduce ammonia volatilization Effect

Active Publication Date: 2018-09-07
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The object of the present invention is that existing sludge conditioners cannot effectively control nitrogen loss, serious odor problems and low mass transfer efficiency, and provide a method for preparing organic fertilizer by using sugar beet pulp as a conditioner and utilizing sludge composting

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0015] Specific embodiment one: present embodiment is a kind of method that utilizes sludge composting to prepare organic fertilizer with sugar beet meal as conditioner, specifically completes according to the following steps:

[0016] 1. Preparation of returned materials: firstly mix the sludge with a conditioner, the conditioner is sugar beet pulp, then add water-absorbing materials, mix well to obtain a mixed material, put the mixed material into fermentation equipment for fermentation, press the mixed material The stacking height is 1.5m ~ 3.5m for composting fermentation treatment, composting fermentation treatment for 12 days to 20 days, the fermented material is obtained, the fermented material is sieved to remove the water-absorbing material, and the returned material is obtained;

[0017] The mass ratio of sludge and water-absorbing material described in step 1 is 1:(0.4~0.6);

[0018] The mass ratio of sludge described in step 1 and conditioning agent is 1:(0.1~0.2);...

specific Embodiment approach 2

[0025] Embodiment 2: The differences between this embodiment and Embodiment 1 are: the carbon-to-nitrogen ratio of the sugar beet pulp described in step 1 is (23-28):1, and the sucrose content is 49 mg / g-58 mg / g. Others are the same as the first embodiment.

specific Embodiment approach 3

[0026] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that the sugar beet pulp described in step 1 is cylindrical, with a diameter of 8 mm and a length of 20 mm to 50 mm. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a method for preparing an organic fertilizer from sludge compost by taking beet pulp as a conditioning agent, and in particular relates to a method for preparing an organic fertilizer by using sludge as a raw material. The invention aims to solve the problems that an existing sludge conditioning agent cannot effectively control nitrogen loss, the odor problem is serious and the mass transfer efficiency is relatively low. The method comprises the following steps: 1, mixing sludge with the conditioning agent at first, then adding a water absorbing material, performing composting fermentation treatment, and screening to obtain a returned material; and 2, mixing the sludge with the conditioning agent, then adding the water absorbing material and the returned material in sequence, mixing uniformly t obtain a to-be-fermented material, performing composting fermentation treatment, and screening to obtain an organic fertilizer. The method has the advantages that the nitrogen loss is 21-27%, the fertilizer effect of a compost product is greatly improved, and the product competitiveness is enhanced. The method disclosed by the invention is mainly used for preparing organic fertilizers by using sludge compost.

Description

technical field [0001] The invention relates to a method for preparing organic fertilizer by using sludge as raw material. Background technique [0002] The problem of "heavy water and light mud" is common in our country. With the improvement of urban sewage treatment rate, the sludge production has also increased sharply. Sludge refers to the mud or mud cake discharged from urban sewage treatment plants after concentration and dehydration. Generally, the water content is about 80%, and it is rich in organic matter and nutrients such as N, P, and K. It also contains harmful elements such as heavy metals and pathogenic bacteria. If the material is not disposed of properly, it will not only easily cause environmental pollution, but also cause waste of resources. Therefore, sludge must be given reasonable final disposal. Conventional sludge disposal methods such as landfill, incineration, agricultural use, etc. can no longer meet the increasingly stringent ecological environm...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C05F7/00C05F17/00
CPCY02W30/40Y02A40/20
Inventor李伟光吴传栋
OwnerHARBIN INST OF TECH