Abstract:
The present disclosure is directed to a method and system of reducing odor causing compounds in biosolids. The method includes receiving sludge from a wastewater treatment plant, thickening the received sludge to achieve a desired percentage of biosolids in the sludge, generating ClO2, injecting the ClO2 into the thickened sludge, exposing the thickened sludge to the ClO2 for a predetermined period of time sufficient to oxidize the odor causing compounds and dewatering the deodorized thickened sludge to achieve a desired percentage of biosolids, wherein the dewatered biosolids are substantially free of odor.
Abstract:
A process for treatment of undigested or anaerobically digested sludge comprising the steps of providing an inorganic coagulant; adding said inorganic coagulant to the sludge to provide a chemically treated sludge; providing a polymer; providing microparticles; adding the polymer and microparticles to the chemically treated to provide a chemically conditioned sludge and dewatering the chemically conditioned sludge using a mechanical equipment to obtain a dewatered sludge cake.
Abstract:
The present invention provides an apparatus 100 for drying a substance 190, the apparatus 100 comprising at least one roller 121 rotatable about a central axis; a first belt 112 having a first side 1 12' and a second side 1 12", the first side 1 12' of the first belt 1 12 adapted to receive the substance 190; and a plurality of heat induction elements 123 arranged to induce heat in the first belt 1 12 to heat the substance 190, where in operation, the first belt 1 12 urges via its first side 1 12', the substance 190 towards a portion of an exterior circumferential surface of the roller 121, and the substance 190 is heated to remove fluids from the substance 190.
Abstract:
An endless elongate structure (11) adapted to circulate around a path. The endless elongate structure (11) comprises a central longitudinal portion (21) and two lateral longitudinal portions (22) on opposed sides of the central longitudinal portion for supporting the central longitudinal portion therebetween. The central longitudinal portion (21) and two lateral longitudinal portions (22) are connected together by joiners (60). The central longitudinal portion (21) is adapted to be assembled into a movable tubular formation (23) which is adapted to be continuously assembled at one end thereof and continuously disassembled at another end thereof during movement of the elongate structure (11) along the path. The central longitudinal portion (21) has two longitudinal edge sections (25) adapted to be releasably connected together for assembling the tubular formation (23) by a slidably interlocking connector (29). The slidably interlocking connector (29) is integrated with the two longitudinal edge sections (25) by joiners (93).
Abstract:
본 발명은, 슬러지와 고농도 유기 폐수를 혼합하여 처리하는 것을 특징으로 하는 생물증발을 이용한 고농도 유기 폐수의 무배출 처리 방법을 제공한다. 상기 슬러지는 바이오-건조 슬러지로서, 벨트 압축 슬러지와 건조 슬러지의 혼합물을 제조하는 단계 및 슬러지 혼합물의 온도가 최종적으로 상온으로 안정화되면 이를 수집하는 단계를 포함하는 방법으로 제조된다. 상기 고농도 유기 폐수로는 지름 1 mm이하의 작은 입자로 분쇄된 음식폐기물이 포함된 폐수가 이용되었다. 상기 슬러지에 포함된 미생물들이 유기 물질을 분해하고, 유기 물질의 분해로 발생하는 대사열로 인해 물이 증발되는 과정을 통해 처리가 이루어진다. 이때의 미생물의 대사과정으로는 호기성 대사 과정이 이용된다.
Abstract:
Disclosed herein are processes, methods, and devices for use in water reclamation, including a system comprising an osmotic membrane bioreactor (OMBR), a microporous membrane bioreactor (MBR), a biological nitrogen removal system (BNR), and a source of high osmotic pressure solution (draw solution), and a reconcentration process to achieve high water recovery at low energy expenditure, which may produce purified water streams of different qualities in parallel. Disclosed processes, methods, and systems for the treating of waste water may further provide for production other useful products, for example, fertilizers. One embodiment of the disclosed systems, processes, or methods may include a hybrid membrane bioreactor comprising a semipermeable membrane and a porous membrane.
Abstract:
Feed water is processed in an anaerobic digester. A solid-liquid separation device, for example a sludge screw thickener, treats a stream drawn from the digester in a recirculation loop. The solids portion is returned to the digester to increase the solids retention time and the TSS concentration in the digester. A liquid portion with less than 5% of the solids in the stream is removed and optionally treated further. The flow rate to the solid-liquid separation device is preferably greater than the influent flow rate. The solid-liquid separation device may receive digestate at a TSS concentration of 4% or more and return a solids portion having a TSS concentration of over 10%. The feed water is preferably one or more industrial waste streams having a COD concentration of 20,000 to 50,000 mg/L and a TSS concentration from 1-5%. The organic loading rate may be 10-12 kg/COD/m3/day.
Abstract:
Fluid filtration systems having adjustable filter belt devices and associated systems and methods are disclosed herein. In several embodiments, for example, a filtering system includes a chamber having an inlet, a first fluid flow pathway, and a second fluid flow pathway. A filter belt is interposed in at least one of the first and second fluid flow pathways. The filter belt is configured to trap contaminants while allowing fluid to pass from the inlet along at least one of the first or second fluid flow pathways. The trapped contaminants form an accumulated porous solids layer on the filter belt. A fluid diversion structure is configured to direct fluid along the first fluid pathway if the fluid has passed through the accumulated porous solids layer or along the second fluid flow pathway if the fluid has not passed through the accumulated porous solids layer.
Abstract:
The present invention relates to an electroendosmosis dehydrator. The electroendosmosis dehydrator comprises: a drum part having a drum rotatably installed on a frame; a caterpillar part having a caterpillar installed separately from the drum; a dehydrating belt transferred between the drum and the caterpillar for dehydrating sludge, wherein the entire number of the drums and the caterpillar is three or more; and a differential power supplying unit supplying an electric potential sequentially increasing or decreasing along a progressing path of the dehydrating belt with respect to the drum and the caterpillar. The electroendosmosis dehydrator applies a voltage according to the progress of the sludge dehydration, which gradually increases or decreases depending on the characteristics of the sludge, thereby providing further improved dehydration efficiency.