Container-type apparatus with a suspended particle system for wastewater treatment

Abstract

The present disclosure provides a container-type apparatus for wastewater treatment with a suspended particle system, including one or multiple biological reaction zones. Said biological reaction zones can be facultative, anaerobic, anoxic, and aerobic and at least one of said biological reaction zones is a suspended particle system. Particles in said suspended particle system act as the carrier of microbiota and offer better conditions for them to grow. The apparatus adopts a box structure, such as a container type, which is convenient to move, flexible to assemble, and can be used for multiple times. Based on actual requirements, this apparatus can also be a structure type. The suspended particle system disclosed herein applied in wastewater treatment can increase the concentration of microorganisms significantly, improve the ability to bear impact load, produce less sludge, and without sludge expansion. Meanwhile, the means to suspend particles by gas and liquid is able to reduce energy consumption to a larger extent. Therefore, this system features high efficiency and low energy consumption.

Therefore, what is claimed is: 
     
         1 . A container-type apparatus for wastewater treatment with a suspended particle system, comprising one or more biological reaction zones, said biological reaction zones including any one of the facultative zones, anaerobic zone, anoxic zone, and aerobic zone or their combination, and one of said biological reaction zones including a suspended particle system comprised of any one or combination of light particles and heavy particles, said light particles having microorganisms located on their surfaces, a density of said light particles being lower than a density of the wastewater phase, a density of said heavy particles is higher than the density of said wastewater. 
     
     
         2 . The container-type apparatus according to  claim 1 , including a gas injection mechanism for Injecting gas into said container such that the light and/or heaving particles are more uniformly dispersed in the container by the said gas when the gas is being injected into the container, and wherein injecting gas causes the heavy particles to be fluidized upwards by the gas. 
     
     
         3 . The container-type apparatus according to  claim 1 , wherein a density of said light particles is higher than or equal to 80% of the density of said liquid and lower than the density of said liquid. 
     
     
         4 . The container-type apparatus according to  claim 1 , wherein a density of said heavy particles is higher than the density of said liquid and lower than or equal to 120% of the density of said liquid. 
     
     
         5 . The container-type apparatus according to  claim 1 , wherein said biological reaction zones include aerobic zones and at least one of the anaerobic zone or anoxic zone. 
     
     
         6 . The container-type apparatus according to  claim 5 , wherein said aerobic zones and anaerobic and anoxic zones are connected to the wastewater. 
     
     
         7 . The container-type apparatus according to  claim 1 , wherein the container-type apparatus includes a container having several enclosures contained therein, said container including a wastewater input, said several enclosures contained within said container being interconnected so that wastewater flows into the container and into the several enclosures, the light and heavy particles contained in said several enclosures and each of said enclosure corresponding to a separate biological reaction zones. 
     
     
         8 . The container-type apparatus according to  claim 1 , wherein the container-type apparatus includes a plurality of box structures each box structure having perforated walls to allow wastewater to enter an interior of each box structure, the light and heavy particles contained in each of the box, and wherein each box contains one biological reaction zones different that the reaction zones in the other boxes. 
     
     
         9 . The container-type apparatus according to  claim 1 , wherein said wastewater treatment apparatus consists of an inflow system, an effluent system, a gas intake system, and a sludge drainage system or their combination. 
     
     
         10 . The container-type apparatus according to  claim 9 , wherein said gas intake system adopts continuous or intermittent methods for gas intake. 
     
     
         11 . The container-type apparatus according to  claim 1 , wherein said container-type apparatus for wastewater treatment comprises one or more biological reaction zones and settling zones, and wherein the liquid in one or multiple of said biological reaction zones is connected to the liquid in said settling zone. 
     
     
         12 . The container-type apparatus according to  claim 11  wherein wastewater in said settling zone produces sludge after going through sludge settling and then the sludge is discharged via the sludge drainage system. 
     
     
         13 . The container-type apparatus according to  claim 1 , wherein the biological reaction zone includes screen meshes for preventing the outflow of particles. 
     
     
         14 . The container-type apparatus according to  claim 1 , wherein one or multiple said container-type apparatus is arranged intensively or separately in polluted rivers or lakes to treat polluted water. 
     
     
         15 . The container-type apparatus according to  claim 1 , wherein one or multiple said container-type apparatus is arranged near one or more drain outlets along river bank for treating polluted water before discharging into river. 
     
     
         16 . The container-type apparatus according to  claim 1 , wherein one or multiple said container-type apparatus is installed in a trailer for the onsite scattered point wastewater treatment. 
     
     
         17 . The container-type apparatus according to  claim 1 , wherein one or multiple said container-type apparatus is arranged separately or in a group in a wastewater accumulating tank for receiving discharged wastewater from aquaculture ponds to treat the aquaculture wastewater and achieve water treatment and recycling of the treated water.