The disclosure relates to a treatment method for sludge utilization in a sewage treatment plant, in particular to a method for reducing heavy metal content of sludge-based biocoke. The disclosure includes following steps (1) to (5): step (1): concentrating a residual sludge produced by a municipal sewage treatment plant to be with a moisture content of 95-98%; step (2): conditioning the concentrated sludge in a sludge bioleaching tank for 48 hours, with a pH value of the sludge being reduced to below 4.5; step (3): pumping the conditioned sludge into a high-pressure diaphragm plate and frame for a press filter dewatering to obtain a dewatered cake with a moisture content less than or equal to 50%; step (4): delivering the dewatered cake into a sludge dryer for crushing, heating and drying to obtain the dried sludge with a moisture content of 15-22%; and step (5): carbonizing the dried sludge into sludge-based biocoke at a high temperature in a pyrolytic carbonization device with a carbonization temperature of 500-650.

The invention relates to a continuous process for treating organic waste taking place in a plant, said process for treating organic waste comprising a process of anaerobic digestion of a first part of said waste, which takes place in at least one digestion chamber, and a process of aerobic composting of a second part of said waste, which takes place in at least one composting chamber, the process for treating organic waste comprising the steps of:—collecting digestate and biogas at the end of said anaerobic digestion process,—collecting compost and humic percolate at the end of said aerobic composting process,—feeding at least part of said digestate

An apparatus, method and system is provided for treating sewage sludge by dewatering the sewage sludge, heating the sewage sludge being treated to destroy pathogens, and then reducing volatile solids in the sewage sludge being treated through biochemical decomposition to produce a treated biosolids product that meets government regulations for pathogen reduction and vector attraction reduction.

An apparatus, method and system is provided for treating sewage sludge by dewatering the sewage sludge, heating the sewage sludge being treated to destroy pathogens, and then reducing volatile solids in the sewage sludge being treated through biochemical decomposition to produce a treated biosolids product that meets government regulations for pathogen reduction and vector attraction reduction.

A sewage treatment system includes dehydration means to dehydrate the received surplus sludge and/or the received return sludge; a microbial material production device configured to supply oxygen to the dehydrated sludge received from the dehydration means while maintaining the temperature of the dehydrated sludge to subject the dehydrated sludge to aerobic fermentation, thereby producing a microbial material; water feeding means configured to feed water from any part of the sewage treatment system to the after-mentioned microbe activation device; a microbe activation device configured to receive the microbial material from the microbial material production device, and supply the water from the water feeding means to the received microbial material; and oxygen supply means configured to supply oxygen to the sewage at any position of the relay pump station; wherein the sewage is sent from the relay pump station to the sewage treatment facility.

A sewage treatment system includes dehydration means to dehydrate the received surplus sludge and/or the received return sludge; a microbial material production device configured to supply oxygen to the dehydrated sludge received from the dehydration means while maintaining the temperature of the dehydrated sludge to subject the dehydrated sludge to aerobic fermentation, thereby producing a microbial material; water feeding means configured to feed water from any part of the sewage treatment system to the after-mentioned microbe activation device; a microbe activation device configured to receive the microbial material from the microbial material production device, and supply the water from the water feeding means to the received microbial material; and oxygen supply means configured to supply oxygen to the sewage at any position of the relay pump station; wherein the sewage is sent from the relay pump station to the sewage treatment facility.

The present invention provides a sewage treatment biological agent and a preparation method and application thereof. The sewage treatment biological agent according to an embodiment of the present invention includes an induced nucleus. The induced nucleus has good bioaffinity. A microbial flora can be attached to the induced nucleus to achieve rapid growth. As the microbial flora gathers and grows on the induced nucleus, the granulation is gradually achieved by the sewage treatment biological agent to facilitate the sewage treatment. The microbial flora grows on the induced nucleus, and the growth process of microbial flora is a covering growth process which starts from the induced nucleus and gradually expands outward and centers on the induced nucleus. During the growth of microbial flora, extracellular polymers are secreted, which can further promote the granulation process by the sewage treatment biological agent.

The present invention provides a sewage treatment biological agent and a preparation method and application thereof. The sewage treatment biological agent according to an embodiment of the present invention includes an induced nucleus. The induced nucleus has good bioaffinity. A microbial flora can be attached to the induced nucleus to achieve rapid growth. As the microbial flora gathers and grows on the induced nucleus, the granulation is gradually achieved by the sewage treatment biological agent to facilitate the sewage treatment. The microbial flora grows on the induced nucleus, and the growth process of microbial flora is a covering growth process which starts from the induced nucleus and gradually expands outward and centers on the induced nucleus. During the growth of microbial flora, extracellular polymers are secreted, which can further promote the granulation process by the sewage treatment biological agent.

The present disclosure belongs to the technical field of treating landfill leachate, and in particular to a system and a method for total volume treatment of landfill leachate, and a use thereof. The system comprises an integrated device of dielectric barrier discharge combined with catalyst treatment, an SBR-MBR biochemical treatment device and a PLC control device; the integrated device for a discharge barriered by dielectric and a catalysis treatment is communicated with the SBR-MBR biochemical treatment device through a water transport pipeline, and the PLC control device is respectively connected with the integrated device for a discharge barriered by dielectric and a catalysis treatment and the SBR-MBR biochemical treatment device through connecting lines.

The present disclosure belongs to the technical field of treating landfill leachate, and in particular to a system and a method for total volume treatment of landfill leachate, and a use thereof. The system comprises an integrated device of dielectric barrier discharge combined with catalyst treatment, an SBR-MBR biochemical treatment device and a PLC control device; the integrated device for a discharge barriered by dielectric and a catalysis treatment is communicated with the SBR-MBR biochemical treatment device through a water transport pipeline, and the PLC control device is respectively connected with the integrated device for a discharge barriered by dielectric and a catalysis treatment and the SBR-MBR biochemical treatment device through connecting lines.