Use composting method to disposal life sludge Sludge composting can refer to two methods

Author: Taida machine       Release time:2016-08-17
Reading guidance:Compared with other sludge, there is less harmful matters contained in life sludge. It is very convenient to use life sludge as resources. There are two main composting methods for life sludge disposal
    Compared with other sludge, there is less harmful matters contained in life sludge. It is very convenient to use life sludge as resources. There are two main composting methods for life sludge disposal, aerobic compost and anaerobic composting. Sludge aerobic composting process refers to under the conditions of oxygen, sludge organic matter decomposition process, its metabolites mainly to carbon dioxide, water and heat. The anaerobic sludge compost is in the decomposition of organic matter under oxygen free conditions, final metabolites from the anaerobic decomposition of methane, carbon dioxide and many low molecular weight of intermediate products, such as organic acid. At present, sludge composting process has become more and more perfect. And gradually formed a windrow composting, trough composting, silo type compost and in vessel composting compost process.
    Generally speaking, life sludge disposal process follows following steps:
Sludge-dehydration-crushing-adding-auxiliary materials-fermentation-seasoning-finished products
    In the composting process, Require strict monitoring of the sludge of heavy metals in sewage sludge composting process and production process of sludge compost should also control. At the same time, experts on sewage sludge composting processing two technical proposals.
     1. Consider pretreatment process comprehensively
    Pretreatment consists of dehydration, crushing and addition auxiliary materials. Its aim is to change chemical quality of sludge and improve fermentation effect. In fact, Pretreatment process should consider three major operation methods comprehensively and pay attention to the importance of porosity, organic matter content, pH and moisture content and other data.
    For example, in order to reduce moisture content of sludge, there will be a great amount of lime added (over 20%). Quick lime added will make sludge alkaline. In one hand, alkaline environment brings bad influence to aerobic fermentation. On the other hand, it can speed up transformation process (nitrogen to ammonia), which will affect low content of finished products and affect quality of finished fertilizer. But the moisture content reduction target can be achieved by adding accessories. Reducing moisture content is mainly to reduce the subsequent fermentation process of water evaporation process. In addition to reduce the moisture content, we also need to increase the sludge of porosity by optimizing crushing process.
     2. Apply forced ventilation in fermentation process
     Fermentation process is faced with fast temperature heating and high moisture content, which will lead to long fermentation period and cause low quality of finished products. The reason why these problems are caused is that aerobic fermentation process is limited and moisture content hasn’t been discharged out well. For trough composting, forced ventilation has good influence to aerobic fermentation process. In a heap at the bottom of the body, establishment ventilation pipes. Forced ventilation can avoid the pile bottom and the middle and atmospheric barrier and the influence of aerobic fermentation. At the same time, it can effectively take away the moisture inside the body of the reactor. And strengthen the closed fermentation pit ventilation can effectively drain the water, avoid floor moisture present in aggregates and returns pile body.
      Along with technical development of sludge treatment and disposal of sludge resource, sludge composting has gradually become part of the first choice for the treatment process. Professional treatment sludge company-Zhengzhou Taida energy saving drying equipment Technology Co., Ltd. enterprises is committed to fulfill reduction of sludge treatment and disposal. Through jointly development of the company and famous universities, SCDD treatment process technology has been developed, which can decrease sludge water content to 30%. This technology has successfully completed a number of projects. Welcome to your contacts and expect long-term cooperation with different customers.
 
 

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