Policy orientation
In the 1960s and 1970s, China's sludge production was low and the composition was simple, and there was not much demand for advanced treatment of sludge. In the 1990s, sewage sludge pollution increased, and sludge discharge standards began to be issued. Since the state issued the "Water Ten" in 2015, the relevant policies of sludge treatment have changed the "heavy water and light mud to the" cement co-governance ", to the development of local conditions, harmless and stable treatment, and at the same time to the transformation of resource utilization, to promote the sludge "to become a treasure".
In 2022, the Ministry of Ecology and Environment of the Ministry of Housing and Urban-Rural Development of the National Development and Reform Commission issued the Implementation Plan for Harmless Sludge Treatment and Resource Utilization, proposing to encourage the use of aerobic fermentation to treat sludge, actively promote the use of sludge land, and encourage the sludge produced by urban domestic sewage treatment plants to be treated by anaerobic digestion or aerobic fermentation. As a fertilizer or soil amendment, it is used in land greening, garden construction, abandoned mining sites and non-agricultural saline-alkali land and desertification land.
The "14th Five-Year Plan" Development Plan for Urban Sewage Treatment and Resource Utilization puts forward the goal: By 2025, the level of harmless sludge and resource utilization in cities and counties will be further improved, and the harmless disposal rate of urban sludge will reach more than 90%; The sewage collection and treatment capacity of established towns in the Yangtze River Economic Belt, the Yellow River basin and the Beijing-Tianjin-Hebei region and the level of harmless sludge disposal have been significantly improved.
Mediterranean environment
Organic sludge resource utilization system solution
Zhonghai Environmental organic sludge resource utilization system solution, through the high temperature aerobic process to achieve the stabilization of organic sludge fermentation, harmless, reduction, while forming a resource utilization as a nutrient soil for landscaping, horticultural planting, lawn maintenance, soil restoration and improvement.
NCS intelligent molecular membrane fermentation system is a process technology to transform organic waste resources through high temperature aerobic fermentation, using e-PTFE membrane, using its one-way permeability characteristics, so that the water vapor and carbon dioxide generated during the fermentation process can be spread out from the microporous structure of the functional membrane, while the outside liquid water (rain, snow) can not enter the membrane. Through aeration, a micro-positive pressure inner cavity is formed in the fermentation body, thus maintaining the airflow balance inside and outside the fermentation pile membrane, achieving a more constant climate environment, ensuring that the aerobic fermentation is carried out more fully and thoroughly, the pathogenic microorganisms are effectively killed, the moisture content of the sludge is effectively reduced, the fermentation efficiency of the sludge is improved, and the production cycle is shortened.
Fermentation materials are mixed with auxiliary materials
Film coating fermentation
The fermentation site is steaming hot
The whole industrial chain supporting equipment
Zhonghai Environmental organic sludge resource utilization system solutions, around NCS intelligent molecular membrane fermentation system to build the whole industry chain equipment, high efficiency treatment, including solid-liquid separation equipment, fermentation equipment, fermentation auxiliary equipment, organic fertilizer/nutrient soil production line, from organic sludge pretreatment to nutrient soil finished products, to promote sludge low-cost, convenient and efficient treatment. At the same time, the sludge is stabilized, harmless and reduced.
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