Sewage plant dewatered sludge continuous rapid zero-emission resourceful treatment process

A technology for dewatering sludge and treatment process, which is applied in dehydration/drying/concentrated sludge treatment, sludge treatment, biological sludge treatment, etc., and can solve the problem of unutilized useful resources, unsuitable for sustainable development, and sludge disposal Problems such as huge cost, to achieve the effect of saving treatment site requirements, avoiding the generation of malodorous gas, and eliminating secondary environmental pollution

CN106186618APending Publication Date: 2016-12-07广州市尊积环保科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2016-12-07
Patent Text Reader

Abstract

The invention provides a sewage plant dewatered sludge continuous rapid zero-emission resourceful treatment process which comprises the following steps: transporting dewatered sludge by a stirring tank vehicle; adding biological strains and chemical additives; completely stirring and reacting in the transportation process so as to completely mix composite biological enzyme and the sludge, eliminate protozoa and filamentous bacteria in the sludge, break sludge zoogloea, organic matter particles and microbial cell walls and perform complexing on heavy metal ions; performing hydrolysis and sterilization treatment by a horizontal cylindrical reaction kettle; performing filter-pressing dehydration on the treated sludge to separate mud from water and finally obtaining protein-enriched nutrient soil and amino acid nutrient solution, wherein pathogenic bacteria are inactivated, heavy metal is stabilized, and macromolecular organic matter with high content can be directly prepared into or further processed into safe and high-efficiency solid or liquid organic fertilizer.
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Description

technical field

[0001] The invention relates to a resource-based treatment process for continuous, rapid and zero-discharge of dewatered sludge from a sewage plant, and belongs to the field of environmental protection solid waste treatment. Background technique

[0002] The "Water Pollution Prevention and Control Action Plan" (Guo Fa

[2015] No. 17) promulgated by the State Council in 2015 clearly puts forward the requirements for strengthening urban sewage treatment and sludge disposal: the existing urban sewage treatment facilities should be transformed according to local conditions, and reach the level by the end of 2020. Corresponding discharge standards or recycling requirements; in accordance with the requirements of the national new urbanization plan, by 2020, all counties and key towns across the country will have sewage collection and treatment capabilities, and the sewage treatment rates in counties and cities will reach about 85% and 95% respectively; sewage treatme...

Examples

Embodiment Construction

[0029] In order to allow those skilled in the art to understand the present invention more clearly and intuitively, the present invention will be further described below.

[0030] A continuous, rapid and zero-discharge resource treatment process for dewatered sludge from sewage plants. The sludge produced in urban sewage plants is conditioned with PAM flocculant, and the dewatered sludge produced after being filtered by a filter press is stored in the dewatered sludge storage. tank; the dewatered sludge is unloaded to the rotary agitating tank car, and according to the nature of the sludge (periodic testing) and the amount of sludge loaded, the compound biological enzyme dosing device adds an appropriate amount of compound biological enzyme to the rotary agitating tank car in a mass ratio of 0.05-0.10%. Enzyme; wherein, the composite biological enzyme includes biological strains and chemical additives, the biological strains are proteolytic bacteria, such as Aspergillus oryzae,...