An upflow anaerobic sludge bed (UASB) system with sludge immobilized on granular activated carbon was developed for fermentative hydrogen production continuously from herbal medicine wastewater at various organic loading rates (8–40 g chemical oxygen demand (COD) L−1 d−1). The maximum hydrogen production rate reached 10.0 (±0.17) mmol L−1 hr−1 at organic loading rate of 24 g COD L−1 d−1, which was 19.9% higher than that of suspended sludge system. The effluents of hydrogen fermentation were used for continuous methane production in the subsequent UASB system. At hydraulic retention time of 15 h, the maximum methane production rate of 5.49 (±0.03) mmol L−1 hr−1 was obtained. The total energy recovery rate by co-production of hydrogen and methane was evaluated to be 7.26 kJ L−1 hr−1.
The Method Found In A Sewage Sludge Carbonization Treatment Plant
Have you ever passes a wastewater treatment plant and wondered exactly how the process works? Most localities have a minimum of one sewage sludge carbonization plant. These plants are the places where municipal sewage sludge is treated. This process is split into three stages. Each stage was created to further decompose and disintegrate wastewater sludge. Microorganisms are utilized to help treat the sludge. Once digested, this type of water is removed in the sludge and is particularly dried. The dried sludge...
Sewage Sludge Recycling to Land and Disposal
The Problem: Sewage treatment is the process of removing contaminants from wastewater, primarily from household sewage. It includes physical, chemical, and biological processes to remove these contaminants and produce environmentally safe treated wastewater (or treated effluent). A by-product of sewage treatment is usually a semi-solid waste or slurry, called sewage sludge, that has to undergo further treatment before being suitable for disposal or land application. Since the liquid sewage sludge disposal to...
Packaged Polymer Injection Dewatering System - Case Studies
Case Study Number 1 Industry: Oil & Gas, Mining and Civil Waste Management Application: Treatment of Waste Drilling Fluids for Recycling Location: Brisbane, Australia Configuration: 20’ Explosion Proof HMI Dewatering System with VFD Driven EE-1448HD Centrifuge. Objective: Wastewater Treatment Sludge Dewatering in Order to Facilitate Landfill Disposal or Reuse. Results: In the first month of operation, the system processed 400 cubic meters (500 tons) of slurry. Process reduced the waste to just 70...
Eliminating sludge islands in your wastewater lagoon
Old municipal and industrial wastewater lagoons have the tendency to build islands of sludge at various locations around the lagoon. It is most common for older lagoons to build such islands wherever wastewater enters the lagoons. Of course, this is because the solids entering the lagoon have enough weight to fall out of the water as flow velocity is reduced, so the solids pile up just after entering the lagoon. Sometimes these sludge islands will build very near a surface aerator, because the violence of the...
Faecal sludge as a solid industrial fuel: a pilot-scale study
Revenues from faecal sludge (FS) treatment end products could offset treatment costs and contribute to financially viable sanitation. In urban sub-Saharan Africa, energy-producing resource recovery has the potential to generate greater revenue than use as soil conditioner. In contrast with wastewater sludge, the technical feasibility of using dried FS as solid fuel in industries has not been investigated. This study evaluated it through characterization of dried FS from drying beds and by assessing the combustion...