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Method for recycling municipal sludge

A technology for urban sludge and resource utilization, which is applied in the preparation and application of sewage/sludge fertilizer and organic fertilizer, can solve the problems of agricultural product quality and safety, ecological environment deterioration, soil degradation, etc. The effect of reducing body temperature and nitrogen loss rate

Inactive Publication Date: 2019-01-25
PENYAO ENVIRONMENTAL PROTECTION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Fermenting sludge with crop straw and adding specific functional microorganisms to make bio-organic fertilizer can solve the serious fertilizer loss, low utilization rate, soil degradation, agricultural product quality and safety, and ecological environment deterioration caused by the excessive application of chemical fertilizers in my country. Based on the current situation, actively seeking efficient and environmentally friendly fertilizer substitutes has become a research hotspot at home and abroad.

Method used

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  • Method for recycling municipal sludge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Get 100 parts of sludge in parts by weight, 20 parts of straw, 20 parts of YM bacteria, 10 parts of amino acid stock solution, 2 parts of Bacillus amyloliquefaciens SQR9 functional bacteria, 2 parts of Trichoderma harzianum T37 functional bacteria The fungus is ready for use; the straw is crushed by a pulverizer; the sludge is spread on the pile of crushed straw, and the sludge is fully mixed with the crushed straw, YM bacteria and amino acid stock solution; the mixed materials are piled up by a loading truck. Bar stacks, install fans, temperature and humidity, pH and oxygen monitors, lay ventilation pipes at the bottom, and carry out high-temperature and low-oxygen fermentation. During the fermentation process, the pH value of the pile is monitored between 5.5 and 8.5, and the humidity of the pile is between 55 and 65%. During the whole process, the oxygen concentration of the heap is between 5 and 15%. The whole process controls the fermentation temperature above 80°C ...

Embodiment 2

[0036] Referring to Example 1, get 120 parts of sludge in parts by weight, 30 parts of stalks, 30 parts of YM bacteria, 20 parts of amino acid stock solution, 5 parts of Bacillus amyloliquefaciens SQR9 functional bacteria, 5 parts of Trichoderma harzianum T37 functional fungus is ready for use; crush the straw through a pulverizer; spread the sludge on the pile of crushed straw, fully mix the sludge with the crushed straw, YM bacteria and amino acid stock solution; put the mixed materials Use loading trucks to stack into stacks, install fans, temperature and humidity, pH and oxygen monitors, lay ventilation pipes at the bottom, and carry out high-temperature and low-oxygen fermentation. During the fermentation process, the pH value of the stack is monitored between 6 and 7, and the humidity of the stack is between 6 and 7. 60~65%, the oxygen concentration of the heap is between 10~15%, the whole process controls the fermentation temperature above 80°C for 8~10 days, and the ini...

Embodiment 3

[0038] Referring to Example 1, get 110 parts of sludge in parts by weight, 25 parts of stalks, 25 parts of YM bacteria, 15 parts of amino acid stock solution, 3 parts of Bacillus amyloliquefaciens SQR9 functional bacteria, 3 parts of Trichoderma harzianum T37 functional fungus is ready for use; crush the straw through a pulverizer; spread the sludge on the pile of crushed straw, fully mix the sludge with the crushed straw, YM bacteria and amino acid stock solution; put the mixed materials Use loading trucks to stack into stacks, install fans, temperature and humidity, pH and oxygen monitors, lay ventilation pipes at the bottom, and carry out high-temperature and low-oxygen fermentation. During the fermentation process, the pH value of the pile is monitored between 6.5 and 7.5, and the humidity of the pile is between 6.5 and 7.5. 60~62%, the oxygen concentration of the heap is between 8~10%, the whole process controls the fermentation temperature above 80°C for 7~9 days, and the...

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Abstract

The invention discloses a method for recycling municipal sludge. The method comprises mixing sludge, straws, YM bacteria, an amino acid stock solution, bacillus amyloliquefaciens SQR9 functional bacteria and trichoderma harzianum T37 functional fungi, conducting high temperature and low oxygen fermentation, conducting crushing, sieving and functional fermentation, and then crushing and sieving toobtain a finished product. Main raw materials are the municipal sludge and the crop straws that are large in quantity, large-scale and periodic production can be achieved, the sludge is from a local sewage treatment plant and meets the CJ / T309-2009 standard, and a raw material source is safe. The high temperature low oxygen and functional fermentation technology is utilized to solve the problem ofenvironment pollution caused by organic solid waste and achieve organic solid waste resource utilization and stable utilization.

Description

technical field [0001] The invention relates to the field of resource utilization of solid waste, in particular to a method for resource utilization of urban sludge. Background technique [0002] At present, most of the urban sludge in my country is simply concentrated and dehydrated. The main disposal methods of sludge are landfill, land utilization, building material manufacturing, etc., but urban sludge has not been well stabilized and resourced. , my country is also trying to develop a new way of urban sludge treatment, mainly to achieve the purpose of resource utilization, urban sludge contains a considerable amount of organic matter, nitrogen, phosphorus, potassium and trace elements and other nutrients. According to estimates, the national straw production in 2011 was 74153×10 4 t, a huge amount, has not been used scientifically and rationally for a long time, and a large amount of straw resources are discarded and burned, resulting in waste of resources and environme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/04C05G3/80
CPCC05C11/00C05G3/80C05F7/00C05F11/00C05F11/08C05F17/00
Inventor 王鹏鹞席莹莹俞肖峰吴波李贺纪仁华闵黎涛许文琪林强
Owner PENYAO ENVIRONMENTAL PROTECTION
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